Updated glsl-optimizer.

3rdparty/glsl-optimizer/Changelog.md

@@ -1,6 +1,13 @@
 GLSL optimizer Change Log
 =========================
 
+2016 09
+-------
+
+* Metal: Fixed constant precision propagation in some cases.
+* Metal: Fixed shadowmap sampling when reference Z value is outside of 0..1 range (now clamps to match GLES specs).
+
+
 2016 06
 -------
 

3rdparty/glsl-optimizer/src/glsl/ast_to_hir.cpp

@@ -3046,6 +3046,11 @@ process_initializer(ir_variable *var, ast_declaration *decl,
    if (type->qualifier.flags.q.constant) {
       ir_constant *constant_value = rhs->constant_expression_value();
       constant_value->set_precision((glsl_precision)type->qualifier.precision);
+      if (constant_value->type->is_array()) {
+         for (unsigned i = 0; i < constant_value->type->length; i++) {
+            constant_value->get_array_element(i)->set_precision((glsl_precision)type->qualifier.precision);
+         }
+      }
    }
 	
    /* Calculate the constant value if this is a const or uniform

3rdparty/glsl-optimizer/src/glsl/ir_print_metal_visitor.cpp

@@ -677,6 +677,20 @@ void ir_print_metal_visitor::visit(ir_variable *ir)
 		buffer.asprintf_append (" = ");
 		visit (ir->constant_value);
 	}
+
+	if ((ir->data.mode == ir_var_auto || ir->data.mode == ir_var_temporary) && (ir->type->matrix_columns == 1)) {
+		switch (ir->type->base_type) {
+			case GLSL_TYPE_INT:
+			case GLSL_TYPE_FLOAT:
+				buffer.asprintf_append (" = 0");
+				break;
+			case GLSL_TYPE_BOOL:
+				buffer.asprintf_append (" = false");
+				break;
+			default:
+				break;
+		}
+	}
 }
 
 
@@ -1110,9 +1124,10 @@ void ir_print_metal_visitor::visit(ir_expression *ir)
 			else if (op0cast)
 			{
 				print_cast (buffer, arg_prec, ir->operands[0]);
+				buffer.asprintf_append ("(");
 			}
 			ir->operands[0]->accept(this);
-			if (op0castTo1)
+			if (op0castTo1 || op0cast)
 			{
 				buffer.asprintf_append (")");
 			}
@@ -1131,9 +1146,10 @@ void ir_print_metal_visitor::visit(ir_expression *ir)
 			else if (op1cast)
 			{
 				print_cast (buffer, arg_prec, ir->operands[1]);
+				buffer.asprintf_append ("(");
 			}
 			ir->operands[1]->accept(this);
-			if (op1castTo0)
+			if (op1castTo0 || op1cast)
 			{
 				buffer.asprintf_append (")");
 			}
@@ -1214,14 +1230,17 @@ static void print_texture_uv (ir_print_metal_visitor* vis, ir_texture* ir, bool
 	}
 	else if (is_shadow)
 	{
+		// Note that on metal sample_compare works differently than shadow2DEXT on GLES:
+		// it does not clamp neither the pixel value nor compare value to the [0.0, 1.0] range. To
+		// preserve same behavior we're clamping the argument explicitly.
 		if (!is_proj)
 		{
 			// regular shadow
 			vis->buffer.asprintf_append (uv_dim == 4 ? "(float3)(" : "(float2)(");
 			ir->coordinate->accept(vis);
-			vis->buffer.asprintf_append (uv_dim == 4 ? ").xyz, (" : ").xy, (float)(");
+			vis->buffer.asprintf_append (uv_dim == 4 ? ").xyz, (" : ").xy, saturate((float)(");
 			ir->coordinate->accept(vis);
-			vis->buffer.asprintf_append (uv_dim == 4 ? ").w" : ").z");
+			vis->buffer.asprintf_append (uv_dim == 4 ? ").w" : ").z)");
 		}
 		else
 		{
@@ -1230,11 +1249,11 @@ static void print_texture_uv (ir_print_metal_visitor* vis, ir_texture* ir, bool
 			ir->coordinate->accept(vis);
 			vis->buffer.asprintf_append (").xy / (float)(");
 			ir->coordinate->accept(vis);
-			vis->buffer.asprintf_append (").w, (float)(");
+			vis->buffer.asprintf_append (").w, saturate((float)(");
 			ir->coordinate->accept(vis);
 			vis->buffer.asprintf_append (").z / (float)(");
 			ir->coordinate->accept(vis);
-			vis->buffer.asprintf_append (").w");
+			vis->buffer.asprintf_append (").w)");
 		}
 	}
 }
@@ -1258,7 +1277,7 @@ void ir_print_metal_visitor::visit(ir_texture *ir)
 		// For shadow sampling, Metal right now needs a hardcoded sampler state :|
 		if (!ctx.shadowSamplerDone)
 		{
-			ctx.prefixStr.asprintf_append("constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less);\n");
+			ctx.prefixStr.asprintf_append("constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less_equal);\n");
 			ctx.shadowSamplerDone = true;
 		}
 		buffer.asprintf_append (".sample_compare(_mtl_xl_shadow_sampler");

3rdparty/glsl-optimizer/tests/fragment/array-const-outES3Metal.txt

@@ -11,7 +11,7 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
+  half4 c_1 = 0;
   c_1.zw = half2(float2(0.0, 0.0));
   c_1.xy = half2(float2(-0.3441301, 0.05004501));
   _mtl_o._fragData = c_1;

3rdparty/glsl-optimizer/tests/fragment/array-constconst-outES3Metal.txt

@@ -11,7 +11,7 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
+  half4 c_1 = 0;
   c_1.zw = half2(float2(0.0, 0.0));
   c_1.xy = half2(float2(-0.3441301, 0.05004501));
   _mtl_o._fragData = c_1;

3rdparty/glsl-optimizer/tests/fragment/ast-outES3Metal.txt

@@ -12,7 +12,7 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float a_2;
+  float a_2 = 0;
   if ((_mtl_i.gl_FragCoord.x == 1.0)) {
     discard_fragment();
   };

3rdparty/glsl-optimizer/tests/fragment/bug-loop-undeclaredinductor-outES3Metal.txt

@@ -18,57 +18,57 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _MainTex [[texture(0)]], sampler _mtlsmp__MainTex [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 t_1;
-  half4 tmpvar_2;
+  half4 t_1 = 0;
+  half4 tmpvar_2 = 0;
   tmpvar_2 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0));
   t_1 = tmpvar_2;
-  if ((_mtl_u._NumPasses > (half)0.0)) {
-    half passes_3;
+  if ((_mtl_u._NumPasses > (half)(0.0))) {
+    half passes_3 = 0;
     passes_3 = _mtl_u._NumPasses;
-    float i_4;
-    half3 res_5;
+    float i_4 = 0;
+    half3 res_5 = 0;
     res_5 = tmpvar_2.xyz;
     i_4 = 0.0;
     while (true) {
       if ((i_4 >= 4.0)) {
         break;
       };
-      if ((i_4 == (float)passes_3)) {
+      if ((i_4 == (float)(passes_3))) {
         break;
       };
       if ((i_4 == 0.0)) {
-        half3 tmpvar_6;
-        half val_7;
-        val_7 = ((_mtl_u._ContrastShift.x * (half)3.0) + (half)12.0);
-        half tmpvar_8;
-        tmpvar_8 = pow ((cos(val_7) + (half)1.0), val_7);
-        tmpvar_6 = ((res_5 - (half)0.5) * tmpvar_8);
+        half3 tmpvar_6 = 0;
+        half val_7 = 0;
+        val_7 = ((_mtl_u._ContrastShift.x * (half)(3.0)) + (half)(12.0));
+        half tmpvar_8 = 0;
+        tmpvar_8 = pow ((cos(val_7) + (half)(1.0)), val_7);
+        tmpvar_6 = ((res_5 - (half)(0.5)) * tmpvar_8);
         res_5 = tmpvar_6;
       } else {
         if ((i_4 == 1.0)) {
-          half3 tmpvar_9;
-          half val_10;
-          val_10 = ((_mtl_u._SaturationShift.y * (half)3.0) + (half)12.0);
-          half tmpvar_11;
-          tmpvar_11 = pow ((cos(val_10) + (half)1.0), val_10);
-          tmpvar_9 = ((res_5 - (half)0.5) * tmpvar_11);
+          half3 tmpvar_9 = 0;
+          half val_10 = 0;
+          val_10 = ((_mtl_u._SaturationShift.y * (half)(3.0)) + (half)(12.0));
+          half tmpvar_11 = 0;
+          tmpvar_11 = pow ((cos(val_10) + (half)(1.0)), val_10);
+          tmpvar_9 = ((res_5 - (half)(0.5)) * tmpvar_11);
           res_5 = tmpvar_9;
         } else {
           if ((i_4 == 2.0)) {
-            half3 tmpvar_12;
-            half val_13;
-            val_13 = ((_mtl_u._HueShift.z * (half)3.0) + (half)12.0);
-            half tmpvar_14;
-            tmpvar_14 = pow ((cos(val_13) + (half)1.0), val_13);
-            tmpvar_12 = ((res_5 - (half)0.5) * tmpvar_14);
+            half3 tmpvar_12 = 0;
+            half val_13 = 0;
+            val_13 = ((_mtl_u._HueShift.z * (half)(3.0)) + (half)(12.0));
+            half tmpvar_14 = 0;
+            tmpvar_14 = pow ((cos(val_13) + (half)(1.0)), val_13);
+            tmpvar_12 = ((res_5 - (half)(0.5)) * tmpvar_14);
             res_5 = tmpvar_12;
           } else {
-            half3 tmpvar_15;
-            half val_16;
-            val_16 = ((_mtl_u._LuminosityShift.x * (half)3.0) + (half)12.0);
-            half tmpvar_17;
-            tmpvar_17 = pow ((cos(val_16) + (half)1.0), val_16);
-            tmpvar_15 = ((res_5 - (half)0.5) * tmpvar_17);
+            half3 tmpvar_15 = 0;
+            half val_16 = 0;
+            val_16 = ((_mtl_u._LuminosityShift.x * (half)(3.0)) + (half)(12.0));
+            half tmpvar_17 = 0;
+            tmpvar_17 = pow ((cos(val_16) + (half)(1.0)), val_16);
+            tmpvar_15 = ((res_5 - (half)(0.5)) * tmpvar_17);
             res_5 = tmpvar_15;
           };
         };
@@ -77,7 +77,7 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
     };
     t_1.xyz = res_5;
   };
-  half4 tmpvar_18;
+  half4 tmpvar_18 = 0;
   tmpvar_18.w = half(1.0);
   tmpvar_18.xyz = t_1.xyz;
   _mtl_o._fragData = tmpvar_18;

3rdparty/glsl-optimizer/tests/fragment/bug-sampler-highp-outES3Metal.txt

@@ -13,7 +13,7 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<float> _CameraDepthTexture [[texture(0)]], sampler _mtlsmp__CameraDepthTexture [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float4 tmpvar_1;
+  float4 tmpvar_1 = 0;
   tmpvar_1 = _CameraDepthTexture.sample(_mtlsmp__CameraDepthTexture, (float2)(_mtl_i.varUV), level(0.0)).xxxx;
   _mtl_o._fragData = half4(tmpvar_1);
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/bug-sampler-highpfull-outES3Metal.txt

@@ -23,48 +23,48 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _NoiseTex [[texture(4)]], sampler _mtlsmp__NoiseTex [[sampler(4)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float2 tmpvar_1;
+  float2 tmpvar_1 = 0;
   tmpvar_1 = _mtl_i.xlv_TEXCOORD0;
-  float4 jitteredDir_3;
-  float4 sum_4;
-  float weight_5;
-  float zx_6;
-  float2 vx_7;
-  float2 x_8;
-  float2 xf_9;
+  float4 jitteredDir_3 = 0;
+  float4 sum_4 = 0;
+  float weight_5 = 0;
+  float zx_6 = 0;
+  float2 vx_7 = 0;
+  float2 x_8 = 0;
+  float2 xf_9 = 0;
   xf_9 = _mtl_i.xlv_TEXCOORD0;
   x_8 = _mtl_i.xlv_TEXCOORD0;
   if ((_mtl_u._MainTex_TexelSize.y < 0.0)) {
     xf_9.y = (1.0 - _mtl_i.xlv_TEXCOORD0.y);
   };
-  half4 tmpvar_10;
+  half4 tmpvar_10 = 0;
   tmpvar_10 = _NeighbourMaxTex.sample(_mtlsmp__NeighbourMaxTex, (float2)(xf_9), level(0.0));
-  float2 tmpvar_11;
+  float2 tmpvar_11 = 0;
   tmpvar_11 = float2(tmpvar_10.xy);
-  half4 tmpvar_12;
+  half4 tmpvar_12 = 0;
   tmpvar_12 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0), level(0.0));
-  float4 tmpvar_13;
+  float4 tmpvar_13 = 0;
   tmpvar_13 = float4(tmpvar_12);
-  half4 tmpvar_14;
+  half4 tmpvar_14 = 0;
   tmpvar_14 = _VelTex.sample(_mtlsmp__VelTex, (float2)(xf_9), level(0.0));
-  float2 tmpvar_15;
+  float2 tmpvar_15 = 0;
   tmpvar_15 = float2(tmpvar_14.xy);
   vx_7 = tmpvar_15;
-  float4 tmpvar_16;
+  float4 tmpvar_16 = 0;
   tmpvar_16.zw = float2(0.0, 0.0);
   tmpvar_16.xy = _mtl_i.xlv_TEXCOORD0;
-  float4 coord_17;
+  float4 coord_17 = 0;
   coord_17 = (tmpvar_16 * 11.0);
-  half4 tmpvar_18;
+  half4 tmpvar_18 = 0;
   tmpvar_18 = _NoiseTex.sample(_mtlsmp__NoiseTex, (float2)(coord_17.xy), level(coord_17.w));
-  float4 tmpvar_19;
-  tmpvar_19 = float4(((tmpvar_18 * (half)2.0) - (half)1.0));
+  float4 tmpvar_19 = 0;
+  tmpvar_19 = float4(((tmpvar_18 * (half)(2.0)) - (half)(1.0)));
   zx_6 = -((1.0/((
     (_mtl_u._ZBufferParams.x * _CameraDepthTexture.sample(_mtlsmp__CameraDepthTexture, (float2)(_mtl_i.xlv_TEXCOORD0), level(0.0)).x)
    + _mtl_u._ZBufferParams.y))));
   weight_5 = 1.0;
   sum_4 = tmpvar_13;
-  float4 tmpvar_20;
+  float4 tmpvar_20 = 0;
   tmpvar_20 = (tmpvar_11.xyxy + (tmpvar_19 * (_mtl_u._MainTex_TexelSize.xyxy * _mtl_u._Jitter)).xyyz);
   jitteredDir_3 = ((max (
     abs(tmpvar_20.xyxy)
@@ -72,50 +72,50 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
     ((_mtl_u._MainTex_TexelSize.xyxy * _mtl_u._MaxVelocity) * 0.15)
   ) * sign(tmpvar_20.xyxy)) * float4(1.0, 1.0, -1.0, -1.0));
   for (int l_2 = 0; l_2 < 12; l_2++) {
-    float zy_21;
-    float4 yf_22;
-    float4 tmpvar_23;
+    float zy_21 = 0;
+    float4 yf_22 = 0;
+    float4 tmpvar_23 = 0;
     tmpvar_23 = (tmpvar_1.xyxy + ((jitteredDir_3.xyxy * _xlat_mtl_const1[l_2].xyxy) * float4(1.0, 1.0, -1.0, -1.0)));
     yf_22 = tmpvar_23;
     if ((_mtl_u._MainTex_TexelSize.y < 0.0)) {
       yf_22.yw = (1.0 - tmpvar_23.yw);
     };
-    half4 tmpvar_24;
+    half4 tmpvar_24 = 0;
     tmpvar_24 = _VelTex.sample(_mtlsmp__VelTex, (float2)(yf_22.xy), level(0.0));
-    float2 tmpvar_25;
+    float2 tmpvar_25 = 0;
     tmpvar_25 = float2(tmpvar_24.xy);
     zy_21 = -((1.0/((
       (_mtl_u._ZBufferParams.x * _CameraDepthTexture.sample(_mtlsmp__CameraDepthTexture, (float2)(tmpvar_23.xy), level(0.0)).x)
      + _mtl_u._ZBufferParams.y))));
-    float2 x_26;
+    float2 x_26 = 0;
     x_26 = (x_8 - tmpvar_23.xy);
-    float2 x_27;
+    float2 x_27 = 0;
     x_27 = (tmpvar_23.xy - x_8);
-    float tmpvar_28;
+    float tmpvar_28 = 0;
     tmpvar_28 = sqrt(dot (tmpvar_25, tmpvar_25));
-    float2 x_29;
+    float2 x_29 = 0;
     x_29 = (tmpvar_23.xy - x_8);
-    float edge0_30;
+    float edge0_30 = 0;
     edge0_30 = (0.95 * tmpvar_28);
-    float tmpvar_31;
+    float tmpvar_31 = 0;
     tmpvar_31 = clamp (((
       sqrt(dot (x_29, x_29))
      - edge0_30) / (
       (1.05 * tmpvar_28)
      - edge0_30)), 0.0, 1.0);
-    float tmpvar_32;
+    float tmpvar_32 = 0;
     tmpvar_32 = sqrt(dot (vx_7, vx_7));
-    float2 x_33;
+    float2 x_33 = 0;
     x_33 = (x_8 - tmpvar_23.xy);
-    float edge0_34;
+    float edge0_34 = 0;
     edge0_34 = (0.95 * tmpvar_32);
-    float tmpvar_35;
+    float tmpvar_35 = 0;
     tmpvar_35 = clamp (((
       sqrt(dot (x_33, x_33))
      - edge0_34) / (
       (1.05 * tmpvar_32)
      - edge0_34)), 0.0, 1.0);
-    float tmpvar_36;
+    float tmpvar_36 = 0;
     tmpvar_36 = (((
       clamp ((1.0 - ((zy_21 - zx_6) / _mtl_u._SoftZDistance)), 0.0, 1.0)
      * 
@@ -141,14 +141,14 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
         (2.0 * tmpvar_35)
       ))))
     ) * 2.0));
-    half4 tmpvar_37;
+    half4 tmpvar_37 = 0;
     tmpvar_37 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_23.xy), level(0.0));
-    float4 tmpvar_38;
+    float4 tmpvar_38 = 0;
     tmpvar_38 = float4(tmpvar_37);
     sum_4 = (sum_4 + (tmpvar_38 * tmpvar_36));
     weight_5 = (weight_5 + tmpvar_36);
   };
-  float4 tmpvar_39;
+  float4 tmpvar_39 = 0;
   tmpvar_39 = (sum_4 / weight_5);
   _mtl_o._fragData = half4(tmpvar_39);
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/builtin-vars-outES3Metal.txt

@@ -15,16 +15,16 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  c_1 = half4(((float4)_mtl_i.uv + _mtl_i.gl_FragCoord));
-  float tmpvar_2;
+  half4 c_1 = 0;
+  c_1 = half4(((float4)(_mtl_i.uv) + _mtl_i.gl_FragCoord));
+  float tmpvar_2 = 0;
   if (_mtl_i.gl_FrontFacing) {
     tmpvar_2 = 1.0;
   } else {
     tmpvar_2 = 0.0;
   };
-  c_1.x = (c_1.x + (half)tmpvar_2);
-  c_1.xy = half2(((float2)c_1.xy + _mtl_i.gl_PointCoord));
+  c_1.x = (c_1.x + (half)(tmpvar_2));
+  c_1.xy = half2(((float2)(c_1.xy) + _mtl_i.gl_PointCoord));
   _mtl_o._fragData = c_1;
   return _mtl_o;
 }

3rdparty/glsl-optimizer/tests/fragment/const-precision-inES3.txt

@@ -24,6 +24,7 @@ mediump vec4 frag( in v2f i ) {
         h += ha[j];
         f += fa[j];
         f += (p * ha[0]);
+		f += (ha[1] * p);
     }
     return vec4( h.xy, f.xy);
 }

3rdparty/glsl-optimizer/tests/fragment/const-precision-outES3.txt

@@ -19,6 +19,7 @@ void main ()
     h_6 = (h_6 + vec3[3](vec3(1.0, 2.0, 3.0), vec3(4.0, 5.0, 6.0), vec3(7.0, 8.0, 9.0))[j_3]);
     f_5 = (f_5 + vec3[3](vec3(11.0, 12.0, 13.0), vec3(14.0, 15.0, 16.0), vec3(17.0, 18.0, 19.0))[j_3]);
     f_5 = (f_5 + (p_4 * vec3(1.0, 2.0, 3.0)));
+    f_5 = (f_5 + (vec3(4.0, 5.0, 6.0) * p_4));
   };
   highp vec4 tmpvar_8;
   tmpvar_8.xy = h_6.xy;
@@ -28,6 +29,6 @@ void main ()
 }
 
 
-// stats: 12 alu 0 tex 2 flow
+// stats: 14 alu 0 tex 2 flow
 // inputs: 1
 //  #0: xlv_TEXCOORD0 (medium float) 2x1 [-1]

3rdparty/glsl-optimizer/tests/fragment/const-precision-outES3Metal.txt

@@ -1,7 +1,7 @@
 #include <metal_stdlib>
 #pragma clang diagnostic ignored "-Wparentheses-equality"
 using namespace metal;
-constant half3 _xlat_mtl_const1[3] = {float3(1.0, 2.0, 3.0), float3(4.0, 5.0, 6.0), float3(7.0, 8.0, 9.0)};
+constant half3 _xlat_mtl_const1[3] = {half3(1.0, 2.0, 3.0), half3(4.0, 5.0, 6.0), half3(7.0, 8.0, 9.0)};
 constant float3 _xlat_mtl_const2[3] = {float3(11.0, 12.0, 13.0), float3(14.0, 15.0, 16.0), float3(17.0, 18.0, 19.0)};
 struct xlatMtlShaderInput {
   half2 xlv_TEXCOORD0;
@@ -14,24 +14,25 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 tmpvar_1;
-  half2 tmpvar_2;
+  half4 tmpvar_1 = 0;
+  half2 tmpvar_2 = 0;
   tmpvar_2 = _mtl_i.xlv_TEXCOORD0;
-  float3 p_4;
-  float3 f_5;
-  half3 h_6;
+  float3 p_4 = 0;
+  float3 f_5 = 0;
+  half3 h_6 = 0;
   h_6 = half3(float3(0.0, 0.0, 0.0));
   f_5 = float3(0.0, 0.0, 0.0);
-  half3 tmpvar_7;
+  half3 tmpvar_7 = 0;
   tmpvar_7.z = half(1.0);
   tmpvar_7.xy = _mtl_i.xlv_TEXCOORD0;
   p_4 = float3(tmpvar_7);
-  for (int j_3 = 0; j_3 < short((tmpvar_2.x * (half)3.0)); j_3++) {
+  for (int j_3 = 0; j_3 < short((tmpvar_2.x * (half)(3.0))); j_3++) {
     h_6 = (h_6 + _xlat_mtl_const1[j_3]);
     f_5 = (f_5 + _xlat_mtl_const2[j_3]);
-    f_5 = (f_5 + (p_4 * float3(1.0, 2.0, 3.0)));
+    f_5 = (f_5 + (p_4 * (float3)(half3(1.0, 2.0, 3.0))));
+    f_5 = (f_5 + ((float3)(half3(4.0, 5.0, 6.0)) * p_4));
   };
-  float4 tmpvar_8;
+  float4 tmpvar_8 = 0;
   tmpvar_8.xy = float2(h_6.xy);
   tmpvar_8.zw = f_5.xy;
   tmpvar_1 = half4(tmpvar_8);
@@ -40,6 +41,6 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
 }
 
 
-// stats: 12 alu 0 tex 2 flow
+// stats: 14 alu 0 tex 2 flow
 // inputs: 1
 //  #0: xlv_TEXCOORD0 (medium float) 2x1 [-1]

3rdparty/glsl-optimizer/tests/fragment/framebuffer_fetch-outES3Metal.txt

@@ -13,12 +13,12 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 xlt_ocol_1;
+  half4 xlt_ocol_1 = 0;
   xlt_ocol_1 = _mtl_i._glesFragData_0;
-  half4 ocol_2;
+  half4 ocol_2 = 0;
   ocol_2.w = xlt_ocol_1.w;
   ocol_2.xy = _mtl_i.xlv_TEXCOORD0.xy;
-  ocol_2.z = (xlt_ocol_1.z * (half)2.0);
+  ocol_2.z = (xlt_ocol_1.z * (half)(2.0));
   xlt_ocol_1 = ocol_2;
   _mtl_o._glesFragData_0 = ocol_2;
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/global-struct-constant-init-metal-outES3Metal.txt

@@ -1,7 +1,7 @@
 #include <metal_stdlib>
 #pragma clang diagnostic ignored "-Wparentheses-equality"
 using namespace metal;
-constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less);
+constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less_equal);
 struct FragmentCommonData {
   half3 diffColor;
   half3 specColor;
@@ -45,125 +45,125 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   depth2d<float> _ShadowMapTexture [[texture(3)]], sampler _mtlsmp__ShadowMapTexture [[sampler(3)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  half atten_2;
-  half4 tmpvar_3;
+  half4 c_1 = 0;
+  half atten_2 = 0;
+  half4 tmpvar_3 = 0;
   tmpvar_3 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0.xy));
-  half2 tmpvar_4;
+  half2 tmpvar_4 = 0;
   tmpvar_4.x = _mtl_u._Metallic;
   tmpvar_4.y = _mtl_u._Glossiness;
-  half3 tmpvar_5;
+  half3 tmpvar_5 = 0;
   tmpvar_5 = (_mtl_u._Color.xyz * tmpvar_3.xyz);
-  half3 tmpvar_6;
-  half3 tmpvar_7;
+  half3 tmpvar_6 = 0;
+  half3 tmpvar_7 = 0;
   tmpvar_7 = mix (_mtl_u.unity_ColorSpaceDielectricSpec.xyz, tmpvar_5, half3(_mtl_u._Metallic));
-  half tmpvar_8;
+  half tmpvar_8 = 0;
   tmpvar_8 = (_mtl_u.unity_ColorSpaceDielectricSpec.w - (_mtl_u._Metallic * _mtl_u.unity_ColorSpaceDielectricSpec.w));
   tmpvar_6 = (tmpvar_5 * tmpvar_8);
-  half3 tmpvar_9;
+  half3 tmpvar_9 = 0;
   tmpvar_9 = normalize(_mtl_i.xlv_TEXCOORD2_2.xyz);
-  half3 tmpvar_10;
+  half3 tmpvar_10 = 0;
   tmpvar_10 = normalize(_mtl_i.xlv_TEXCOORD1);
-  half3 tmpvar_11;
+  half3 tmpvar_11 = 0;
   tmpvar_11 = _mtl_u._LightColor0.xyz;
-  half shadow_12;
-  half tmpvar_13;
+  half shadow_12 = 0;
+  half tmpvar_13 = 0;
   tmpvar_13 = _ShadowMapTexture.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.xlv_TEXCOORD6.xyz).xy, (float)(_mtl_i.xlv_TEXCOORD6.xyz).z);
-  half tmpvar_14;
+  half tmpvar_14 = 0;
   tmpvar_14 = tmpvar_13;
-  shadow_12 = (_mtl_u._LightShadowData.x + (tmpvar_14 * ((half)1.0 - _mtl_u._LightShadowData.x)));
+  shadow_12 = (_mtl_u._LightShadowData.x + (tmpvar_14 * ((half)(1.0) - _mtl_u._LightShadowData.x)));
   atten_2 = shadow_12;
-  half occ_15;
-  half tmpvar_16;
+  half occ_15 = 0;
+  half tmpvar_16 = 0;
   tmpvar_16 = _OcclusionMap.sample(_mtlsmp__OcclusionMap, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).y;
   occ_15 = tmpvar_16;
-  half tmpvar_17;
-  tmpvar_17 = (((half)1.0 - _mtl_u._OcclusionStrength) + (occ_15 * _mtl_u._OcclusionStrength));
+  half tmpvar_17 = 0;
+  tmpvar_17 = (((half)(1.0) - _mtl_u._OcclusionStrength) + (occ_15 * _mtl_u._OcclusionStrength));
   FragmentCommonData s_18;
   s_18 = _xlat_mtl_const1;
   s_18.oneMinusRoughness = tmpvar_4.y;
   s_18.normalWorld = tmpvar_9;
   s_18.eyeVec = tmpvar_10;
   s_18.posWorld = half3(float3(0.0, 0.0, 0.0));
-  half3 tmpvar_19;
-  half3 tmpvar_20;
+  half3 tmpvar_19 = 0;
+  half3 tmpvar_20 = 0;
   tmpvar_19 = s_18.normalWorld;
   tmpvar_20 = s_18.eyeVec;
-  float4 tmpvar_21;
+  float4 tmpvar_21 = 0;
   tmpvar_21 = float4(_mtl_u.unity_SpecCube0_HDR);
-  half tmpvar_22;
-  tmpvar_22 = ((half)1.0 - s_18.oneMinusRoughness);
-  half3 tmpvar_23;
-  tmpvar_23 = (tmpvar_20 - ((half)2.0 * (
+  half tmpvar_22 = 0;
+  tmpvar_22 = ((half)(1.0) - s_18.oneMinusRoughness);
+  half3 tmpvar_23 = 0;
+  tmpvar_23 = (tmpvar_20 - ((half)(2.0) * (
     dot (tmpvar_19, tmpvar_20)
    * tmpvar_19)));
-  half4 tmpvar_24;
+  half4 tmpvar_24 = 0;
   tmpvar_24.w = half(1.0);
   tmpvar_24.xyz = tmpvar_19;
-  half3 x_25;
+  half3 x_25 = 0;
   x_25.x = dot (_mtl_u.unity_SHAr, tmpvar_24);
   x_25.y = dot (_mtl_u.unity_SHAg, tmpvar_24);
   x_25.z = dot (_mtl_u.unity_SHAb, tmpvar_24);
-  half4 hdr_26;
+  half4 hdr_26 = 0;
   hdr_26 = half4(tmpvar_21);
-  half4 tmpvar_27;
+  half4 tmpvar_27 = 0;
   tmpvar_27.xyz = tmpvar_23;
-  tmpvar_27.w = ((tmpvar_22 * ((half)1.7 - 
-    ((half)0.7 * tmpvar_22)
-  )) * (half)6.0);
-  half4 tmpvar_28;
+  tmpvar_27.w = ((tmpvar_22 * ((half)(1.7) - 
+    ((half)(0.7) * tmpvar_22)
+  )) * (half)(6.0));
+  half4 tmpvar_28 = 0;
   tmpvar_28 = unity_SpecCube0.sample(_mtlsmp_unity_SpecCube0, (float3)(tmpvar_23), level(tmpvar_27.w));
-  half4 tmpvar_29;
+  half4 tmpvar_29 = 0;
   tmpvar_29 = tmpvar_28;
-  half3 viewDir_30;
+  half3 viewDir_30 = 0;
   viewDir_30 = -(tmpvar_10);
-  half3 tmpvar_31;
-  half3 inVec_32;
+  half3 tmpvar_31 = 0;
+  half3 inVec_32 = 0;
   inVec_32 = (_mtl_u._WorldSpaceLightPos0.xyz + viewDir_30);
   tmpvar_31 = (inVec_32 * rsqrt(max ((half)0.001, 
     dot (inVec_32, inVec_32)
   )));
-  half tmpvar_33;
+  half tmpvar_33 = 0;
   tmpvar_33 = max ((half)0.0, dot (_mtl_u._WorldSpaceLightPos0.xyz, tmpvar_31));
-  half tmpvar_34;
-  tmpvar_34 = ((half)1.0 - _mtl_u._Glossiness);
-  half tmpvar_35;
+  half tmpvar_34 = 0;
+  tmpvar_34 = ((half)(1.0) - _mtl_u._Glossiness);
+  half tmpvar_35 = 0;
   tmpvar_35 = max ((half)0.0001, (tmpvar_34 * tmpvar_34));
-  half tmpvar_36;
-  tmpvar_36 = max ((((half)2.0 / 
+  half tmpvar_36 = 0;
+  tmpvar_36 = max ((((half)(2.0) / 
     (tmpvar_35 * tmpvar_35)
-  ) - (half)2.0), (half)0.0001);
-  half x_37;
-  x_37 = ((half)1.0 - max ((half)0.0, dot (tmpvar_9, viewDir_30)));
-  half4 tmpvar_38;
+  ) - (half)(2.0)), (half)0.0001);
+  half x_37 = 0;
+  x_37 = ((half)(1.0) - max ((half)0.0, dot (tmpvar_9, viewDir_30)));
+  half4 tmpvar_38 = 0;
   tmpvar_38.w = half(1.0);
   tmpvar_38.xyz = (((
     ((tmpvar_6 + (sqrt(
-      max ((half)0.0001, (((tmpvar_36 + (half)1.0) * pow (
+      max ((half)0.0001, (((tmpvar_36 + (half)(1.0)) * pow (
         max ((half)0.0, dot (tmpvar_9, tmpvar_31))
       , tmpvar_36)) / ((
-        ((half)8.0 * (((tmpvar_33 * tmpvar_33) * _mtl_u._Glossiness) + (tmpvar_34 * tmpvar_34)))
-       * tmpvar_33) + (half)0.0001)))
+        ((half)(8.0) * (((tmpvar_33 * tmpvar_33) * _mtl_u._Glossiness) + (tmpvar_34 * tmpvar_34)))
+       * tmpvar_33) + (half)(0.0001))))
     ) * tmpvar_7)) * (tmpvar_11 * atten_2))
    * 
     max ((half)0.0, dot (tmpvar_9, _mtl_u._WorldSpaceLightPos0.xyz))
   ) + (
-    (max ((((half)1.055 * 
+    (max ((((half)(1.055) * 
       pow (max ((half3)float3(0.0, 0.0, 0.0), (_mtl_i.xlv_TEXCOORD5.xyz + x_25)), (half3)float3(0.4166667, 0.4166667, 0.4166667))
-    ) - (half)0.055), (half3)float3(0.0, 0.0, 0.0)) * tmpvar_17)
+    ) - (half)(0.055)), (half3)float3(0.0, 0.0, 0.0)) * tmpvar_17)
    * tmpvar_6)) + ((
-    ((half)1.0 - ((tmpvar_34 * tmpvar_34) * (tmpvar_34 * (half)0.28)))
+    ((half)(1.0) - ((tmpvar_34 * tmpvar_34) * (tmpvar_34 * (half)(0.28))))
    * 
     (((hdr_26.x * tmpvar_29.w) * tmpvar_29.xyz) * tmpvar_17)
   ) * mix (tmpvar_7, half3(
-    clamp ((_mtl_u._Glossiness + ((half)1.0 - tmpvar_8)), (half)0.0, (half)1.0)
+    clamp ((_mtl_u._Glossiness + ((half)(1.0) - tmpvar_8)), (half)0.0, (half)1.0)
   ), half3(
     ((x_37 * x_37) * (x_37 * x_37))
   ))));
   c_1 = (tmpvar_38 * _mtl_i.xlv_COLOR);
   c_1.xyz = c_1.xyz;
   c_1.xyz = c_1.xyz;
-  half4 xlat_varoutput_39;
+  half4 xlat_varoutput_39 = 0;
   xlat_varoutput_39.xyz = c_1.xyz;
   xlat_varoutput_39.w = half(1.0);
   _mtl_o.FragData_0 = xlat_varoutput_39;

3rdparty/glsl-optimizer/tests/fragment/glsl120-basic-outES3Metal.txt

@@ -12,7 +12,7 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 v_1;
+  half4 v_1 = 0;
   v_1.w = half(-1.0);
   v_1.x = ((half)(1.2 + _mtl_u.nonSqMat[0].x));
   v_1.y = half(6.0);

3rdparty/glsl-optimizer/tests/fragment/intrinsics-outES3Metal.txt

@@ -12,148 +12,148 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
+  half4 c_1 = 0;
   c_1 = half4(float4(0.0, 0.0, 0.0, 0.0));
-  float tmpvar_2;
+  float tmpvar_2 = 0;
   tmpvar_2 = (_mtl_i.xlv_TEXCOORD0.x / 2.0);
-  float tmpvar_3;
+  float tmpvar_3 = 0;
   tmpvar_3 = (fract(abs(tmpvar_2)) * 2.0);
-  float tmpvar_4;
+  float tmpvar_4 = 0;
   if ((tmpvar_2 >= 0.0)) {
     tmpvar_4 = tmpvar_3;
   } else {
     tmpvar_4 = -(tmpvar_3);
   };
   c_1.x = half(tmpvar_4);
-  float2 tmpvar_5;
+  float2 tmpvar_5 = 0;
   tmpvar_5 = (_mtl_i.xlv_TEXCOORD0.xy / float2(2.0, 2.0));
-  float2 tmpvar_6;
+  float2 tmpvar_6 = 0;
   tmpvar_6 = (fract(abs(tmpvar_5)) * float2(2.0, 2.0));
-  float tmpvar_7;
+  float tmpvar_7 = 0;
   if ((tmpvar_5.x >= 0.0)) {
     tmpvar_7 = tmpvar_6.x;
   } else {
     tmpvar_7 = -(tmpvar_6.x);
   };
-  float tmpvar_8;
+  float tmpvar_8 = 0;
   if ((tmpvar_5.y >= 0.0)) {
     tmpvar_8 = tmpvar_6.y;
   } else {
     tmpvar_8 = -(tmpvar_6.y);
   };
-  float2 tmpvar_9;
+  float2 tmpvar_9 = 0;
   tmpvar_9.x = tmpvar_7;
   tmpvar_9.y = tmpvar_8;
-  c_1.xy = ((half2)((float2)c_1.xy + tmpvar_9));
-  float3 tmpvar_10;
+  c_1.xy = ((half2)((float2)(c_1.xy) + tmpvar_9));
+  float3 tmpvar_10 = 0;
   tmpvar_10 = (_mtl_i.xlv_TEXCOORD0.xyz / float3(2.0, 2.0, 2.0));
-  float3 tmpvar_11;
+  float3 tmpvar_11 = 0;
   tmpvar_11 = (fract(abs(tmpvar_10)) * float3(2.0, 2.0, 2.0));
-  float tmpvar_12;
+  float tmpvar_12 = 0;
   if ((tmpvar_10.x >= 0.0)) {
     tmpvar_12 = tmpvar_11.x;
   } else {
     tmpvar_12 = -(tmpvar_11.x);
   };
-  float tmpvar_13;
+  float tmpvar_13 = 0;
   if ((tmpvar_10.y >= 0.0)) {
     tmpvar_13 = tmpvar_11.y;
   } else {
     tmpvar_13 = -(tmpvar_11.y);
   };
-  float tmpvar_14;
+  float tmpvar_14 = 0;
   if ((tmpvar_10.z >= 0.0)) {
     tmpvar_14 = tmpvar_11.z;
   } else {
     tmpvar_14 = -(tmpvar_11.z);
   };
-  float3 tmpvar_15;
+  float3 tmpvar_15 = 0;
   tmpvar_15.x = tmpvar_12;
   tmpvar_15.y = tmpvar_13;
   tmpvar_15.z = tmpvar_14;
-  c_1.xyz = ((half3)((float3)c_1.xyz + tmpvar_15));
-  float4 tmpvar_16;
+  c_1.xyz = ((half3)((float3)(c_1.xyz) + tmpvar_15));
+  float4 tmpvar_16 = 0;
   tmpvar_16 = (_mtl_i.xlv_TEXCOORD0 / float4(2.0, 2.0, 2.0, 2.0));
-  float4 tmpvar_17;
+  float4 tmpvar_17 = 0;
   tmpvar_17 = (fract(abs(tmpvar_16)) * float4(2.0, 2.0, 2.0, 2.0));
-  float tmpvar_18;
+  float tmpvar_18 = 0;
   if ((tmpvar_16.x >= 0.0)) {
     tmpvar_18 = tmpvar_17.x;
   } else {
     tmpvar_18 = -(tmpvar_17.x);
   };
-  float tmpvar_19;
+  float tmpvar_19 = 0;
   if ((tmpvar_16.y >= 0.0)) {
     tmpvar_19 = tmpvar_17.y;
   } else {
     tmpvar_19 = -(tmpvar_17.y);
   };
-  float tmpvar_20;
+  float tmpvar_20 = 0;
   if ((tmpvar_16.z >= 0.0)) {
     tmpvar_20 = tmpvar_17.z;
   } else {
     tmpvar_20 = -(tmpvar_17.z);
   };
-  float tmpvar_21;
+  float tmpvar_21 = 0;
   if ((tmpvar_16.w >= 0.0)) {
     tmpvar_21 = tmpvar_17.w;
   } else {
     tmpvar_21 = -(tmpvar_17.w);
   };
-  float4 tmpvar_22;
+  float4 tmpvar_22 = 0;
   tmpvar_22.x = tmpvar_18;
   tmpvar_22.y = tmpvar_19;
   tmpvar_22.z = tmpvar_20;
   tmpvar_22.w = tmpvar_21;
-  c_1 = ((half4)((float4)c_1 + tmpvar_22));
-  float tmpvar_23;
-  half ip_24;
-  int tmpvar_25;
+  c_1 = ((half4)((float4)(c_1) + tmpvar_22));
+  float tmpvar_23 = 0;
+  half ip_24 = 0;
+  int tmpvar_25 = 0;
   tmpvar_25 = int(_mtl_i.xlv_TEXCOORD0.x);
   ip_24 = half(float(tmpvar_25));
-  tmpvar_23 = (_mtl_i.xlv_TEXCOORD0.x - (float)ip_24);
-  c_1.x = ((half)((float)c_1.x + tmpvar_23));
-  float2 tmpvar_26;
-  int2 tmpvar_27;
+  tmpvar_23 = (_mtl_i.xlv_TEXCOORD0.x - (float)(ip_24));
+  c_1.x = ((half)((float)(c_1.x) + tmpvar_23));
+  float2 tmpvar_26 = 0;
+  int2 tmpvar_27 = 0;
   tmpvar_27 = int2(_mtl_i.xlv_TEXCOORD0.xy);
-  half2 tmpvar_28;
+  half2 tmpvar_28 = 0;
   tmpvar_28 = half2(float2(tmpvar_27));
-  tmpvar_26 = (_mtl_i.xlv_TEXCOORD0.xy - (float2)tmpvar_28);
-  c_1.xy = ((half2)((float2)c_1.xy + tmpvar_26));
-  float3 tmpvar_29;
-  int3 tmpvar_30;
+  tmpvar_26 = (_mtl_i.xlv_TEXCOORD0.xy - (float2)(tmpvar_28));
+  c_1.xy = ((half2)((float2)(c_1.xy) + tmpvar_26));
+  float3 tmpvar_29 = 0;
+  int3 tmpvar_30 = 0;
   tmpvar_30 = int3(_mtl_i.xlv_TEXCOORD0.xyz);
-  half3 tmpvar_31;
+  half3 tmpvar_31 = 0;
   tmpvar_31 = half3(float3(tmpvar_30));
-  tmpvar_29 = (_mtl_i.xlv_TEXCOORD0.xyz - (float3)tmpvar_31);
-  c_1.xyz = ((half3)((float3)c_1.xyz + tmpvar_29));
-  float4 tmpvar_32;
-  int4 tmpvar_33;
+  tmpvar_29 = (_mtl_i.xlv_TEXCOORD0.xyz - (float3)(tmpvar_31));
+  c_1.xyz = ((half3)((float3)(c_1.xyz) + tmpvar_29));
+  float4 tmpvar_32 = 0;
+  int4 tmpvar_33 = 0;
   tmpvar_33 = int4(_mtl_i.xlv_TEXCOORD0);
-  half4 tmpvar_34;
+  half4 tmpvar_34 = 0;
   tmpvar_34 = half4(float4(tmpvar_33));
-  tmpvar_32 = (_mtl_i.xlv_TEXCOORD0 - (float4)tmpvar_34);
-  c_1 = ((half4)((float4)c_1 + tmpvar_32));
-  float tmpvar_35;
+  tmpvar_32 = (_mtl_i.xlv_TEXCOORD0 - (float4)(tmpvar_34));
+  c_1 = ((half4)((float4)(c_1) + tmpvar_32));
+  float tmpvar_35 = 0;
   tmpvar_35 = (float(fmod (_mtl_i.xlv_TEXCOORD0.x, (float)tmpvar_34.x)));
-  c_1.x = half(((float)c_1.x + tmpvar_35));
-  float2 tmpvar_36;
+  c_1.x = half(((float)(c_1.x) + tmpvar_35));
+  float2 tmpvar_36 = 0;
   tmpvar_36 = (float2(fmod (_mtl_i.xlv_TEXCOORD0.xy, (float2)tmpvar_34.xy)));
-  c_1.xy = half2(((float2)c_1.xy + tmpvar_36));
-  float3 tmpvar_37;
+  c_1.xy = half2(((float2)(c_1.xy) + tmpvar_36));
+  float3 tmpvar_37 = 0;
   tmpvar_37 = (float3(fmod (_mtl_i.xlv_TEXCOORD0.xyz, (float3)tmpvar_34.xyz)));
-  c_1.xyz = half3(((float3)c_1.xyz + tmpvar_37));
-  float tmpvar_38;
+  c_1.xyz = half3(((float3)(c_1.xyz) + tmpvar_37));
+  float tmpvar_38 = 0;
   tmpvar_38 = (1.0/(_mtl_i.xlv_TEXCOORD0.x));
-  c_1.x = half(((float)c_1.x + tmpvar_38));
-  float tmpvar_39;
+  c_1.x = half(((float)(c_1.x) + tmpvar_38));
+  float tmpvar_39 = 0;
   tmpvar_39 = max (0.0, tmpvar_38);
-  c_1.x = half(((float)c_1.x + tmpvar_39));
+  c_1.x = half(((float)(c_1.x) + tmpvar_39));
   c_1.y = (c_1.y + ((half)1.0/(c_1.z)));
   c_1.y = (c_1.y + max ((half)0.0, ((half)1.0/(c_1.w))));
-  float tmpvar_40;
+  float tmpvar_40 = 0;
   tmpvar_40 = max (_mtl_i.xlv_TEXCOORD0.x, (float)c_1.z);
-  c_1.x = half(((float)c_1.x + tmpvar_40));
+  c_1.x = half(((float)(c_1.x) + tmpvar_40));
   _mtl_o._fragData = c_1;
   return _mtl_o;
 }

3rdparty/glsl-optimizer/tests/fragment/loop-for-outES3Metal.txt

@@ -15,14 +15,14 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _MainTex [[texture(0)]], sampler _mtlsmp__MainTex [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 tmpvar_1;
-  half3 light_2;
-  half4 col_3;
+  half4 tmpvar_1 = 0;
+  half3 light_2 = 0;
+  half4 col_3 = 0;
   col_3 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_uv));
   light_2 = ((col_3.xyz * _mtl_i.xlv_nl.x) * _mtl_u._TerrainTreeLightColors[0].xyz);
   light_2 = (light_2 + ((col_3.xyz * _mtl_i.xlv_nl.y) * _mtl_u._TerrainTreeLightColors[1].xyz));
   light_2 = (light_2 + ((col_3.xyz * _mtl_i.xlv_nl.z) * _mtl_u._TerrainTreeLightColors[2].xyz));
-  half4 tmpvar_4;
+  half4 tmpvar_4 = 0;
   tmpvar_4.w = half(1.0);
   tmpvar_4.xyz = light_2;
   tmpvar_1 = tmpvar_4;

3rdparty/glsl-optimizer/tests/fragment/loop-forafterdiscard-outES3Metal.txt

@@ -15,17 +15,17 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _MainTex [[texture(0)]], sampler _mtlsmp__MainTex [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 tmpvar_1;
-  half3 light_2;
-  half4 tmpvar_3;
+  half4 tmpvar_1 = 0;
+  half3 light_2 = 0;
+  half4 tmpvar_3 = 0;
   tmpvar_3 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_uv));
-  if ((tmpvar_3.w < (half)0.5)) {
+  if ((tmpvar_3.w < (half)(0.5))) {
     discard_fragment();
   };
   light_2 = ((tmpvar_3.xyz * _mtl_i.xlv_nl.x) * _mtl_u._TerrainTreeLightColors[0].xyz);
   light_2 = (light_2 + ((tmpvar_3.xyz * _mtl_i.xlv_nl.y) * _mtl_u._TerrainTreeLightColors[1].xyz));
   light_2 = (light_2 + ((tmpvar_3.xyz * _mtl_i.xlv_nl.z) * _mtl_u._TerrainTreeLightColors[2].xyz));
-  half4 tmpvar_4;
+  half4 tmpvar_4 = 0;
   tmpvar_4.w = half(1.0);
   tmpvar_4.xyz = light_2;
   tmpvar_1 = tmpvar_4;

3rdparty/glsl-optimizer/tests/fragment/matrix-cast-types-outES3Metal.txt

@@ -23,18 +23,18 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _DecalNorm [[texture(1)]], sampler _mtlsmp__DecalNorm [[sampler(1)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 res_1;
-  half3 worldN_2;
-  half3 combinedNormal_3;
-  half3 tmpvar_4;
-  tmpvar_4 = ((_DecalNorm.sample(_mtlsmp__DecalNorm, (float2)(_mtl_i.xlv_TEXCOORD0.zw)).xyz * (half)2.0) - (half)1.0);
-  half3 tmpvar_5;
-  tmpvar_5 = ((_PanelNorm.sample(_mtlsmp__PanelNorm, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).xyz * (half)2.0) - (half)1.0);
-  half3 tmpvar_6;
+  half4 res_1 = 0;
+  half3 worldN_2 = 0;
+  half3 combinedNormal_3 = 0;
+  half3 tmpvar_4 = 0;
+  tmpvar_4 = ((_DecalNorm.sample(_mtlsmp__DecalNorm, (float2)(_mtl_i.xlv_TEXCOORD0.zw)).xyz * (half)(2.0)) - (half)(1.0));
+  half3 tmpvar_5 = 0;
+  tmpvar_5 = ((_PanelNorm.sample(_mtlsmp__PanelNorm, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).xyz * (half)(2.0)) - (half)(1.0));
+  half3 tmpvar_6 = 0;
   tmpvar_6.x = tmpvar_4.z;
   tmpvar_6.y = tmpvar_4.y;
   tmpvar_6.z = -(tmpvar_4.x);
-  half3 tmpvar_7;
+  half3 tmpvar_7 = 0;
   tmpvar_7.x = tmpvar_4.x;
   tmpvar_7.y = tmpvar_4.z;
   tmpvar_7.z = -(tmpvar_4.y);
@@ -50,33 +50,33 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   tmpvar_9[2].y = tmpvar_7.z;
   tmpvar_9[2].z = tmpvar_4.z;
   tmpvar_8 = _xlcast_float3x3(tmpvar_9);
-  float3 v_10;
+  float3 v_10 = 0;
   v_10.x = tmpvar_8[0].x;
   v_10.y = tmpvar_8[1].x;
   v_10.z = tmpvar_8[2].x;
-  float3 v_11;
+  float3 v_11 = 0;
   v_11.x = tmpvar_8[0].y;
   v_11.y = tmpvar_8[1].y;
   v_11.z = tmpvar_8[2].y;
-  float3 v_12;
+  float3 v_12 = 0;
   v_12.x = tmpvar_8[0].z;
   v_12.y = tmpvar_8[1].z;
   v_12.z = tmpvar_8[2].z;
   combinedNormal_3 = normalize(((
-    ((half3)((float)tmpvar_5.x * v_10))
+    ((half3)((float)(tmpvar_5.x) * v_10))
    + 
-    ((half3)((float)tmpvar_5.y * v_11))
-  ) + ((half3)((float)tmpvar_5.z * v_12))));
-  float tmpvar_13;
+    ((half3)((float)(tmpvar_5.y) * v_11))
+  ) + ((half3)((float)(tmpvar_5.z) * v_12))));
+  float tmpvar_13 = 0;
   tmpvar_13 = dot (_mtl_i.xlv_TEXCOORD1.xyz, (float3)combinedNormal_3);
   worldN_2.x = half(tmpvar_13);
-  float tmpvar_14;
+  float tmpvar_14 = 0;
   tmpvar_14 = dot (_mtl_i.xlv_TEXCOORD2.xyz, (float3)combinedNormal_3);
   worldN_2.y = half(tmpvar_14);
-  float tmpvar_15;
+  float tmpvar_15 = 0;
   tmpvar_15 = dot (_mtl_i.xlv_TEXCOORD3.xyz, (float3)combinedNormal_3);
   worldN_2.z = half(tmpvar_15);
-  res_1.xyz = ((worldN_2 * (half)0.5) + (half)0.5);
+  res_1.xyz = ((worldN_2 * (half)(0.5)) + (half)(0.5));
   res_1.w = half(0.0);
   _mtl_o._fragData = res_1;
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/matrix-ops-outES3Metal.txt

@@ -28,11 +28,11 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   xlatMtlShaderOutput _mtl_o;
   half2x2 halfMatrix_1;
   float2x2 rotationMatrix_2;
-  float tmpvar_3;
-  float tmpvar_4;
+  float tmpvar_3 = 0;
+  float tmpvar_4 = 0;
   tmpvar_4 = (_mtl_u._Speed * _mtl_u._Time.x);
   tmpvar_3 = sin(tmpvar_4);
-  float tmpvar_5;
+  float tmpvar_5 = 0;
   tmpvar_5 = cos(tmpvar_4);
   float2x2 tmpvar_6;
   tmpvar_6[0].x = tmpvar_5;
@@ -50,14 +50,14 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   tmpvar_7[1].x = -(tmpvar_3);
   tmpvar_7[1].y = tmpvar_5;
   halfMatrix_1 = _xlcast_half2x2(tmpvar_7);
-  halfMatrix_1 = (halfMatrix_1 * (half)2.0);
+  halfMatrix_1 = (halfMatrix_1 * (half)(2.0));
   halfMatrix_1 = (halfMatrix_1 - _xlinit_half2x2(1.0));
   halfMatrix_1 = _xlcast_half2x2(((float2x2)(_xlinit_half2x2(tmpvar_3) - halfMatrix_1)));
   halfMatrix_1 = _xlcast_half2x2(((float2x2)(_xlinit_half2x2(tmpvar_5) + halfMatrix_1)));
   halfMatrix_1 = _xlcast_half2x2(((float2x2)(halfMatrix_1 * (1.0h/half(tmpvar_3)))));
-  float4 tmpvar_8;
+  float4 tmpvar_8 = 0;
   tmpvar_8.xy = (rotationMatrix_2 * _mtl_i.uv);
-  tmpvar_8.zw = ((float2)(halfMatrix_1 * (half2)_mtl_i.uv));
+  tmpvar_8.zw = ((float2)(halfMatrix_1 * (half2)(_mtl_i.uv)));
   _mtl_o._fragData = half4(tmpvar_8);
   return _mtl_o;
 }

3rdparty/glsl-optimizer/tests/fragment/mrt-unused-outES3Metal.txt

@@ -13,9 +13,9 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  float4 tmpvar_2;
-  tmpvar_2 = ((float4)_mtl_i.xlv_COLOR0 * _mtl_u._Color);
+  half4 c_1 = 0;
+  float4 tmpvar_2 = 0;
+  tmpvar_2 = ((float4)(_mtl_i.xlv_COLOR0) * _mtl_u._Color);
   c_1 = half4(tmpvar_2);
   _mtl_o._glesFragData_0 = c_1;
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/opt-grafting-precision-outES3Metal.txt

@@ -14,10 +14,10 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  half tmpvar_2;
+  half4 c_1 = 0;
+  half tmpvar_2 = 0;
   tmpvar_2 = dot (_mtl_i.normal, _mtl_i.halfDir);
-  half4 tmpvar_3;
+  half4 tmpvar_3 = 0;
   tmpvar_3 = half4(pow (tmpvar_2, _mtl_u.specPower));
   c_1 = tmpvar_3;
   _mtl_o._fragData = c_1;

3rdparty/glsl-optimizer/tests/fragment/prec-expressions-outES3Metal.txt

@@ -13,13 +13,13 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 r_1;
-  half3 lightCoord_2;
-  float4 tmpvar_3;
+  half4 r_1 = 0;
+  half3 lightCoord_2 = 0;
+  float4 tmpvar_3 = 0;
   tmpvar_3.w = 1.0;
   tmpvar_3.xyz = _mtl_u._WorldPos;
-  float3 tmpvar_4;
-  tmpvar_4 = ((float4)(_mtl_u._LightMatrix * (half4)tmpvar_3)).xyz;
+  float3 tmpvar_4 = 0;
+  tmpvar_4 = ((float4)(_mtl_u._LightMatrix * (half4)(tmpvar_3))).xyz;
   lightCoord_2 = half3(tmpvar_4);
   r_1.xyz = lightCoord_2;
   r_1.w = half(1.0);

3rdparty/glsl-optimizer/tests/fragment/prec-matrix-constr-outES3Metal.txt

@@ -12,7 +12,7 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
+  half4 c_1 = 0;
   half3x3 tmpvar_2;
   tmpvar_2[0].x = half(0.8164966);
   tmpvar_2[0].y = half(-0.4082483);

3rdparty/glsl-optimizer/tests/fragment/sampler-precision-outES3Metal.txt

@@ -18,21 +18,21 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texturecube<float> cubehigh [[texture(5)]], sampler _mtlsmp_cubehigh [[sampler(5)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  half4 tmpvar_2;
+  half4 c_1 = 0;
+  half4 tmpvar_2 = 0;
   tmpvar_2 = texlow.sample(_mtlsmp_texlow, (float2)(_mtl_i.varUV.xy));
   c_1 = tmpvar_2;
   c_1 = (c_1 + texmed.sample(_mtlsmp_texmed, (float2)(_mtl_i.varUV.xy)));
-  float4 tmpvar_3;
+  float4 tmpvar_3 = 0;
   tmpvar_3 = texhigh.sample(_mtlsmp_texhigh, (float2)(_mtl_i.varUV.xy));
-  c_1 = half4(((float4)c_1 + tmpvar_3));
-  half4 tmpvar_4;
+  c_1 = half4(((float4)(c_1) + tmpvar_3));
+  half4 tmpvar_4 = 0;
   tmpvar_4 = cubelow.sample(_mtlsmp_cubelow, (float3)(_mtl_i.varUV.xyz));
   c_1 = (c_1 + tmpvar_4);
   c_1 = (c_1 + cubemed.sample(_mtlsmp_cubemed, (float3)(_mtl_i.varUV.xyz)));
-  float4 tmpvar_5;
+  float4 tmpvar_5 = 0;
   tmpvar_5 = cubehigh.sample(_mtlsmp_cubehigh, (float3)(_mtl_i.varUV.xyz));
-  c_1 = half4(((float4)c_1 + tmpvar_5));
+  c_1 = half4(((float4)(c_1) + tmpvar_5));
   _mtl_o._fragData = c_1;
   return _mtl_o;
 }

3rdparty/glsl-optimizer/tests/fragment/ternary-outES3Metal.txt

@@ -12,45 +12,45 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
+  half4 c_1 = 0;
   c_1 = half4(float4(0.0, 0.0, 0.0, 0.0));
-  float tmpvar_2;
+  float tmpvar_2 = 0;
   if ((_mtl_i.xlv_TEXCOORD0.x > 0.5)) {
     tmpvar_2 = 0.9;
   } else {
     tmpvar_2 = 0.1;
   };
   c_1 = half4(float4(tmpvar_2));
-  float4 tmpvar_3;
+  float4 tmpvar_3 = 0;
   if ((_mtl_i.xlv_TEXCOORD0.x > 0.5)) {
     tmpvar_3 = float4(0.9, 0.9, 0.9, 0.9);
   } else {
     tmpvar_3 = float4(0.1, 0.1, 0.1, 0.1);
   };
   c_1 = ((half4)(float4(tmpvar_2) + tmpvar_3));
-  float3 tmpvar_4;
+  float3 tmpvar_4 = 0;
   if ((_mtl_i.xlv_TEXCOORD0.x > 0.5)) {
     tmpvar_4 = float3(0.9, 0.9, 0.9);
   } else {
     tmpvar_4 = float3(0.1, 0.1, 0.1);
   };
-  c_1.xyz = (c_1.xyz + (half3)tmpvar_4);
-  float2 tmpvar_5;
+  c_1.xyz = (c_1.xyz + (half3)(tmpvar_4));
+  float2 tmpvar_5 = 0;
   if ((_mtl_i.xlv_TEXCOORD0.x > 0.5)) {
     tmpvar_5 = float2(0.9, 0.9);
   } else {
     tmpvar_5 = float2(0.1, 0.1);
   };
-  c_1.xy = (c_1.xy + (half2)tmpvar_5);
-  float tmpvar_6;
+  c_1.xy = (c_1.xy + (half2)(tmpvar_5));
+  float tmpvar_6 = 0;
   tmpvar_6 = fract(_mtl_i.xlv_TEXCOORD0.x);
-  float tmpvar_7;
+  float tmpvar_7 = 0;
   if (bool(tmpvar_6)) {
     tmpvar_7 = 0.9;
   } else {
     tmpvar_7 = 0.1;
   };
-  c_1.x = (c_1.x + (half)tmpvar_7);
+  c_1.x = (c_1.x + (half)(tmpvar_7));
   _mtl_o._fragData = c_1;
   return _mtl_o;
 }

3rdparty/glsl-optimizer/tests/fragment/ternary-vec4-outES3Metal.txt

@@ -12,164 +12,164 @@ struct xlatMtlShaderUniform {
 fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 tmpvar_1;
-  float4 a_2;
+  half4 tmpvar_1 = 0;
+  float4 a_2 = 0;
   a_2 = float4(0.0, 0.0, 0.0, 0.0);
-  bool4 tmpvar_3;
+  bool4 tmpvar_3 = false;
   tmpvar_3 = bool4((_mtl_i.xlv_TEXCOORD0 > float4(0.5, 0.5, 0.5, 0.5)));
-  float tmpvar_4;
+  float tmpvar_4 = 0;
   if (tmpvar_3.x) {
     tmpvar_4 = 1.0;
   } else {
     tmpvar_4 = 5.0;
   };
-  float tmpvar_5;
+  float tmpvar_5 = 0;
   if (tmpvar_3.y) {
     tmpvar_5 = 2.0;
   } else {
     tmpvar_5 = 6.0;
   };
-  float tmpvar_6;
+  float tmpvar_6 = 0;
   if (tmpvar_3.z) {
     tmpvar_6 = 3.0;
   } else {
     tmpvar_6 = 7.0;
   };
-  float tmpvar_7;
+  float tmpvar_7 = 0;
   if (tmpvar_3.w) {
     tmpvar_7 = 4.0;
   } else {
     tmpvar_7 = 8.0;
   };
-  float4 tmpvar_8;
+  float4 tmpvar_8 = 0;
   tmpvar_8.x = tmpvar_4;
   tmpvar_8.y = tmpvar_5;
   tmpvar_8.z = tmpvar_6;
   tmpvar_8.w = tmpvar_7;
   a_2 = tmpvar_8;
-  bool4 tmpvar_9;
+  bool4 tmpvar_9 = false;
   tmpvar_9 = bool4((_mtl_i.xlv_TEXCOORD0 > float4(0.5, 0.5, 0.5, 0.5)));
-  float tmpvar_10;
+  float tmpvar_10 = 0;
   if (tmpvar_9.x) {
     tmpvar_10 = 1.0;
   } else {
     tmpvar_10 = 5.0;
   };
-  float tmpvar_11;
+  float tmpvar_11 = 0;
   if (tmpvar_9.y) {
     tmpvar_11 = 2.0;
   } else {
     tmpvar_11 = 6.0;
   };
-  float tmpvar_12;
+  float tmpvar_12 = 0;
   if (tmpvar_9.z) {
     tmpvar_12 = 3.0;
   } else {
     tmpvar_12 = 7.0;
   };
-  float tmpvar_13;
+  float tmpvar_13 = 0;
   if (tmpvar_9.w) {
     tmpvar_13 = 4.0;
   } else {
     tmpvar_13 = 8.0;
   };
-  float4 tmpvar_14;
+  float4 tmpvar_14 = 0;
   tmpvar_14.x = tmpvar_10;
   tmpvar_14.y = tmpvar_11;
   tmpvar_14.z = tmpvar_12;
   tmpvar_14.w = tmpvar_13;
   a_2 = (tmpvar_8 + tmpvar_14);
-  bool4 tmpvar_15;
+  bool4 tmpvar_15 = false;
   tmpvar_15 = bool4((_mtl_i.xlv_TEXCOORD0 > float4(0.5, 0.5, 0.5, 0.5)));
-  float tmpvar_16;
+  float tmpvar_16 = 0;
   if (tmpvar_15.x) {
     tmpvar_16 = 1.0;
   } else {
     tmpvar_16 = 2.0;
   };
-  float tmpvar_17;
+  float tmpvar_17 = 0;
   if (tmpvar_15.y) {
     tmpvar_17 = 1.0;
   } else {
     tmpvar_17 = 2.0;
   };
-  float tmpvar_18;
+  float tmpvar_18 = 0;
   if (tmpvar_15.z) {
     tmpvar_18 = 1.0;
   } else {
     tmpvar_18 = 2.0;
   };
-  float tmpvar_19;
+  float tmpvar_19 = 0;
   if (tmpvar_15.w) {
     tmpvar_19 = 1.0;
   } else {
     tmpvar_19 = 2.0;
   };
-  float4 tmpvar_20;
+  float4 tmpvar_20 = 0;
   tmpvar_20.x = tmpvar_16;
   tmpvar_20.y = tmpvar_17;
   tmpvar_20.z = tmpvar_18;
   tmpvar_20.w = tmpvar_19;
   a_2 = (a_2 + tmpvar_20);
-  bool4 tmpvar_21;
+  bool4 tmpvar_21 = false;
   tmpvar_21 = bool4((_mtl_i.xlv_TEXCOORD0 > float4(0.5, 0.5, 0.5, 0.5)));
-  float tmpvar_22;
+  float tmpvar_22 = 0;
   if (tmpvar_21.x) {
     tmpvar_22 = 1.0;
   } else {
     tmpvar_22 = 2.0;
   };
-  float tmpvar_23;
+  float tmpvar_23 = 0;
   if (tmpvar_21.y) {
     tmpvar_23 = 1.0;
   } else {
     tmpvar_23 = 2.0;
   };
-  float tmpvar_24;
+  float tmpvar_24 = 0;
   if (tmpvar_21.z) {
     tmpvar_24 = 1.0;
   } else {
     tmpvar_24 = 2.0;
   };
-  float tmpvar_25;
+  float tmpvar_25 = 0;
   if (tmpvar_21.w) {
     tmpvar_25 = 1.0;
   } else {
     tmpvar_25 = 2.0;
   };
-  float4 tmpvar_26;
+  float4 tmpvar_26 = 0;
   tmpvar_26.x = tmpvar_22;
   tmpvar_26.y = tmpvar_23;
   tmpvar_26.z = tmpvar_24;
   tmpvar_26.w = tmpvar_25;
   a_2 = (a_2 + tmpvar_26);
-  bool4 tmpvar_27;
+  bool4 tmpvar_27 = false;
   tmpvar_27 = bool4(fract(_mtl_i.xlv_TEXCOORD0));
-  float tmpvar_28;
+  float tmpvar_28 = 0;
   if (tmpvar_27.x) {
     tmpvar_28 = 1.0;
   } else {
     tmpvar_28 = 2.0;
   };
-  float tmpvar_29;
+  float tmpvar_29 = 0;
   if (tmpvar_27.y) {
     tmpvar_29 = 1.0;
   } else {
     tmpvar_29 = 2.0;
   };
-  float tmpvar_30;
+  float tmpvar_30 = 0;
   if (tmpvar_27.z) {
     tmpvar_30 = 1.0;
   } else {
     tmpvar_30 = 2.0;
   };
-  float tmpvar_31;
+  float tmpvar_31 = 0;
   if (tmpvar_27.w) {
     tmpvar_31 = 1.0;
   } else {
     tmpvar_31 = 2.0;
   };
-  float4 tmpvar_32;
+  float4 tmpvar_32 = 0;
   tmpvar_32.x = tmpvar_28;
   tmpvar_32.y = tmpvar_29;
   tmpvar_32.z = tmpvar_30;

3rdparty/glsl-optimizer/tests/fragment/tex2DArray-outES3Metal.txt

@@ -13,21 +13,21 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d_array<half> myarr [[texture(0)]], sampler _mtlsmp_myarr [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 tmpvar_1;
-  float4 slod_2;
-  half4 tmpvar_3;
+  half4 tmpvar_1 = 0;
+  float4 slod_2 = 0;
+  half4 tmpvar_3 = 0;
   tmpvar_3 = myarr.sample(_mtlsmp_myarr, (float2)((_mtl_i.uv.xyz).xy), (uint)((_mtl_i.uv.xyz).z));
-  float4 tmpvar_4;
+  float4 tmpvar_4 = 0;
   tmpvar_4 = float4(tmpvar_3);
-  half4 tmpvar_5;
+  half4 tmpvar_5 = 0;
   tmpvar_5 = myarr.sample(_mtlsmp_myarr, (float2)((_mtl_i.uv.xyw).xy), (uint)((_mtl_i.uv.xyw).z));
-  float4 tmpvar_6;
+  float4 tmpvar_6 = 0;
   tmpvar_6 = float4(tmpvar_5);
-  half4 tmpvar_7;
+  half4 tmpvar_7 = 0;
   tmpvar_7 = myarr.sample(_mtlsmp_myarr, (float2)((_mtl_i.uv.xyz).xy), (uint)((_mtl_i.uv.xyz).z), bias(1.5));
-  float4 tmpvar_8;
+  float4 tmpvar_8 = 0;
   tmpvar_8 = float4(tmpvar_7);
-  half4 tmpvar_9;
+  half4 tmpvar_9 = 0;
   tmpvar_9 = myarr.sample(_mtlsmp_myarr, (float2)((_mtl_i.uv.xyz).xy), (uint)((_mtl_i.uv.xyz).z), level(2.5));
   slod_2 = float4(tmpvar_9);
   tmpvar_1 = half4(((tmpvar_4 + tmpvar_6) + (tmpvar_8 + slod_2)));

3rdparty/glsl-optimizer/tests/fragment/tex2dgrad-outES3Metal.txt

@@ -15,13 +15,13 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> tex [[texture(0)]], sampler _mtlsmp_tex [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half2 tmpvar_1;
+  half2 tmpvar_1 = 0;
   tmpvar_1 = dfdx(_mtl_i.uv1.xy);
-  half2 tmpvar_2;
+  half2 tmpvar_2 = 0;
   tmpvar_2 = dfdy(_mtl_i.uv1.xy);
-  float2 tmpvar_3;
+  float2 tmpvar_3 = 0;
   tmpvar_3 = dfdx(_mtl_i.uv2.xy);
-  float2 tmpvar_4;
+  float2 tmpvar_4 = 0;
   tmpvar_4 = dfdy(_mtl_i.uv2.xy);
   _mtl_o._fragColor = ((tex.sample(_mtlsmp_tex, (float2)(_mtl_i.uv1.xy), gradient2d((float2)(tmpvar_1), (float2)(tmpvar_2))) + tex.sample(_mtlsmp_tex, (float2)(_mtl_i.uv2.xy), gradient2d((float2)(tmpvar_3), (float2)(tmpvar_4)))) + tex.sample(_mtlsmp_tex, (float2)(_mtl_i.uv2.xy), gradient2d((float2)(_mtl_i.uv1.xy), (float2)(_mtl_i.uv1.xy))));
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/tex2dlod-outES3Metal.txt

@@ -15,11 +15,11 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> tex [[texture(0)]], sampler _mtlsmp_tex [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 tmpvar_1;
-  half4 tmpvar_2;
+  half4 tmpvar_1 = 0;
+  half4 tmpvar_2 = 0;
   tmpvar_2 = tex.sample(_mtlsmp_tex, (float2)(_mtl_i.uvHi.xy), level(0.0));
   tmpvar_1 = tmpvar_2;
-  half4 tmpvar_3;
+  half4 tmpvar_3 = 0;
   tmpvar_3 = tex.sample(_mtlsmp_tex, (float2)(_mtl_i.uvMed.xy), level(_mtl_i.uvMed.z));
   _mtl_o._fragColor = (tmpvar_1 + tmpvar_3);
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/tex2dshadow-outES3Metal.txt

@@ -1,7 +1,7 @@
 #include <metal_stdlib>
 #pragma clang diagnostic ignored "-Wparentheses-equality"
 using namespace metal;
-constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less);
+constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less_equal);
 struct xlatMtlShaderInput {
   float4 uvHi;
   half4 uvMed;
@@ -16,11 +16,11 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   depth2d<float> shadowmap [[texture(0)]], sampler _mtlsmp_shadowmap [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 r_1;
-  half4 tmpvar_2;
-  tmpvar_2 = half4((shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uvHi.xyz).xy, (float)(_mtl_i.uvHi.xyz).z) + shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uvHi).xy / (float)(_mtl_i.uvHi).w, (float)(_mtl_i.uvHi).z / (float)(_mtl_i.uvHi).w)));
+  half4 r_1 = 0;
+  half4 tmpvar_2 = 0;
+  tmpvar_2 = half4((shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uvHi.xyz).xy, saturate((float)(_mtl_i.uvHi.xyz).z)) + shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uvHi).xy / (float)(_mtl_i.uvHi).w, saturate((float)(_mtl_i.uvHi).z / (float)(_mtl_i.uvHi).w))));
   r_1.yzw = tmpvar_2.yzw;
-  r_1.x = (tmpvar_2.x + shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uvMed.xyz).xy, (float)(_mtl_i.uvMed.xyz).z));
+  r_1.x = (tmpvar_2.x + shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uvMed.xyz).xy, saturate((float)(_mtl_i.uvMed.xyz).z)));
   _mtl_o._fragColor = r_1;
   return _mtl_o;
 }

3rdparty/glsl-optimizer/tests/fragment/texCubeShadow-outES3Metal.txt

@@ -1,7 +1,7 @@
 #include <metal_stdlib>
 #pragma clang diagnostic ignored "-Wparentheses-equality"
 using namespace metal;
-constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less);
+constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less_equal);
 struct xlatMtlShaderInput {
   half4 uv;
 };
@@ -15,7 +15,7 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   depthcube<float> shadowmap [[texture(0)]], sampler _mtlsmp_shadowmap [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 tmpvar_1;
+  half4 tmpvar_1 = 0;
   tmpvar_1 = half4(shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float3)(_mtl_i.uv).xyz, (_mtl_i.uv).w));
   _mtl_o._fragColor = tmpvar_1;
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/texOffset-outES3Metal.txt

@@ -14,7 +14,7 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture3d<half> vol [[texture(1)]], sampler _mtlsmp_vol [[sampler(1)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
+  half4 c_1 = 0;
   c_1 = (tex.sample(_mtlsmp_tex, (float2)(_mtl_i.uv.xy)) + tex.sample(_mtlsmp_tex, (float2)(_mtl_i.uv.xy), bias(0.5)));
   c_1 = (c_1 + vol.sample(_mtlsmp_vol, (float3)(_mtl_i.uv)));
   c_1 = (c_1 + vol.sample(_mtlsmp_vol, (float3)(_mtl_i.uv), bias(-0.5)));

3rdparty/glsl-optimizer/tests/fragment/texProj-outES3Metal.txt

@@ -1,7 +1,7 @@
 #include <metal_stdlib>
 #pragma clang diagnostic ignored "-Wparentheses-equality"
 using namespace metal;
-constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less);
+constexpr sampler _mtl_xl_shadow_sampler(address::clamp_to_edge, filter::linear, compare_func::less_equal);
 struct xlatMtlShaderInput {
   float4 uv;
 };
@@ -15,12 +15,12 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   depth2d<float> shadowmap [[texture(1)]], sampler _mtlsmp_shadowmap [[sampler(1)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
+  half4 c_1 = 0;
   c_1 = (tex.sample(_mtlsmp_tex, ((float2)(_mtl_i.uv).xy / (float)(_mtl_i.uv).w)) + tex.sample(_mtlsmp_tex, ((float2)(_mtl_i.uv.xyz).xy / (float)(_mtl_i.uv.xyz).z)));
   c_1 = (c_1 + tex.sample(_mtlsmp_tex, ((float2)(_mtl_i.uv).xy / (float)(_mtl_i.uv).w), level(1.0)));
   c_1 = (c_1 + tex.sample(_mtlsmp_tex, ((float2)(_mtl_i.uv.xyz).xy / (float)(_mtl_i.uv.xyz).z), level(1.0)));
-  c_1 = (c_1 + half4(shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uv.xyz).xy, (float)(_mtl_i.uv.xyz).z)));
-  c_1 = (c_1 + half4(shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uv).xy / (float)(_mtl_i.uv).w, (float)(_mtl_i.uv).z / (float)(_mtl_i.uv).w)));
+  c_1 = (c_1 + half4(shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uv.xyz).xy, saturate((float)(_mtl_i.uv.xyz).z))));
+  c_1 = (c_1 + half4(shadowmap.sample_compare(_mtl_xl_shadow_sampler, (float2)(_mtl_i.uv).xy / (float)(_mtl_i.uv).w, saturate((float)(_mtl_i.uv).z / (float)(_mtl_i.uv).w))));
   _mtl_o._fragData = c_1;
   return _mtl_o;
 }

3rdparty/glsl-optimizer/tests/fragment/variables-initialization-inES3.txt

@@ -0,0 +1,44 @@
+#version 300 es
+#define gl_FragData _glesFragData
+layout(location = 0) out mediump vec4 _glesFragData[1];
+
+uniform sampler2D _MainTex;
+
+struct u2v {
+	vec4 pos;
+	vec2 uv;
+};
+
+struct v2f {
+	vec4 pos;
+	vec2 uv;
+};
+
+v2f vert (u2v v) {
+	v2f o;
+	o.pos = v.pos;
+	o.uv = v.uv;
+	return o;
+}
+
+vec4 frag (in v2f i) {
+	vec4 foo;
+	bool bar;
+	mat4 mat;
+	vec4 leet = vec4(0.5);
+	vec4 col = texture(_MainTex, i.uv);
+	col += bar ? foo : leet;
+	col += mat[0];
+	return col;
+}
+
+in mediump vec2 xlv_TEXCOORD0;
+void main() {
+    mediump vec4 xl_retval;
+    v2f xlt_i;
+    xlt_i.pos = vec4(0.0);
+    xlt_i.uv = vec2(xlv_TEXCOORD0);
+    xl_retval = frag(xlt_i);
+    gl_FragData[0] = vec4(xl_retval);
+}
+

3rdparty/glsl-optimizer/tests/fragment/variables-initialization-outES3.txt

@@ -0,0 +1,32 @@
+#version 300 es
+layout(location=0) out mediump vec4 _glesFragData[1];
+uniform sampler2D _MainTex;
+in mediump vec2 xlv_TEXCOORD0;
+void main ()
+{
+  mediump vec4 xl_retval_1;
+  lowp vec4 col_2;
+  highp vec4 mat_0_3;
+  bool bar_4;
+  highp vec4 foo_5;
+  lowp vec4 tmpvar_6;
+  tmpvar_6 = texture (_MainTex, xlv_TEXCOORD0);
+  col_2 = tmpvar_6;
+  highp vec4 tmpvar_7;
+  if (bar_4) {
+    tmpvar_7 = foo_5;
+  } else {
+    tmpvar_7 = vec4(0.5, 0.5, 0.5, 0.5);
+  };
+  col_2 = (tmpvar_6 + tmpvar_7);
+  col_2 = (col_2 + mat_0_3);
+  xl_retval_1 = col_2;
+  _glesFragData[0] = xl_retval_1;
+}
+
+
+// stats: 3 alu 1 tex 1 flow
+// inputs: 1
+//  #0: xlv_TEXCOORD0 (medium float) 2x1 [-1]
+// textures: 1
+//  #0: _MainTex (low 2d) 0x0 [-1]

3rdparty/glsl-optimizer/tests/fragment/variables-initialization-outES3Metal.txt

@@ -0,0 +1,42 @@
+#include <metal_stdlib>
+#pragma clang diagnostic ignored "-Wparentheses-equality"
+using namespace metal;
+struct xlatMtlShaderInput {
+  half2 xlv_TEXCOORD0;
+};
+struct xlatMtlShaderOutput {
+  half4 _glesFragData_0 [[color(0)]];
+};
+struct xlatMtlShaderUniform {
+};
+fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]]
+  ,   texture2d<half> _MainTex [[texture(0)]], sampler _mtlsmp__MainTex [[sampler(0)]])
+{
+  xlatMtlShaderOutput _mtl_o;
+  half4 xl_retval_1 = 0;
+  half4 col_2 = 0;
+  float4 mat_0_3 = 0;
+  bool bar_4 = false;
+  float4 foo_5 = 0;
+  half4 tmpvar_6 = 0;
+  tmpvar_6 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0));
+  col_2 = tmpvar_6;
+  float4 tmpvar_7 = 0;
+  if (bar_4) {
+    tmpvar_7 = foo_5;
+  } else {
+    tmpvar_7 = float4(0.5, 0.5, 0.5, 0.5);
+  };
+  col_2 = (tmpvar_6 + (half4)(tmpvar_7));
+  col_2 = (col_2 + (half4)(mat_0_3));
+  xl_retval_1 = col_2;
+  _mtl_o._glesFragData_0 = xl_retval_1;
+  return _mtl_o;
+}
+
+
+// stats: 3 alu 1 tex 1 flow
+// inputs: 1
+//  #0: xlv_TEXCOORD0 (medium float) 2x1 [-1]
+// textures: 1
+//  #0: _MainTex (low 2d) 0x0 [-1] loc 0

3rdparty/glsl-optimizer/tests/fragment/z-DirLMBasis-outES3Metal.txt

@@ -16,15 +16,15 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _MainTex [[texture(2)]], sampler _mtlsmp__MainTex [[sampler(2)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  half3 tmpvar_2;
-  half3 tmpvar_3;
-  half4 c_4;
-  half4 tmpvar_5;
+  half4 c_1 = 0;
+  half3 tmpvar_2 = 0;
+  half3 tmpvar_3 = 0;
+  half4 c_4 = 0;
+  half4 tmpvar_5 = 0;
   tmpvar_5 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0));
   c_4 = tmpvar_5;
   tmpvar_2 = c_4.xyz;
-  tmpvar_3 = ((c_4.xyz * (half)2.0) - (half)1.0);
+  tmpvar_3 = ((c_4.xyz * (half)(2.0)) - (half)(1.0));
   half3x3 tmpvar_6;
   tmpvar_6[0].x = half(0.8164966);
   tmpvar_6[0].y = half(-0.4082483);
@@ -35,15 +35,15 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   tmpvar_6[2].x = half(0.5773503);
   tmpvar_6[2].y = half(0.5773503);
   tmpvar_6[2].z = half(0.5773503);
-  half3 normal_7;
+  half3 normal_7 = 0;
   normal_7 = tmpvar_3;
-  half3 scalePerBasisVector_8;
-  half3 lm_9;
-  half3 tmpvar_10;
-  tmpvar_10 = ((half)2.0 * unity_Lightmap.sample(_mtlsmp_unity_Lightmap, (float2)(_mtl_i.xlv_TEXCOORD4.xy)).xyz);
+  half3 scalePerBasisVector_8 = 0;
+  half3 lm_9 = 0;
+  half3 tmpvar_10 = 0;
+  tmpvar_10 = ((half)(2.0) * unity_Lightmap.sample(_mtlsmp_unity_Lightmap, (float2)(_mtl_i.xlv_TEXCOORD4.xy)).xyz);
   lm_9 = tmpvar_10;
-  half3 tmpvar_11;
-  tmpvar_11 = ((half)2.0 * unity_LightmapInd.sample(_mtlsmp_unity_LightmapInd, (float2)(_mtl_i.xlv_TEXCOORD4.xy)).xyz);
+  half3 tmpvar_11 = 0;
+  tmpvar_11 = ((half)(2.0) * unity_LightmapInd.sample(_mtlsmp_unity_LightmapInd, (float2)(_mtl_i.xlv_TEXCOORD4.xy)).xyz);
   scalePerBasisVector_8 = tmpvar_11;
   lm_9 = (lm_9 * dot (clamp (
     (tmpvar_6 * normal_7)

3rdparty/glsl-optimizer/tests/fragment/z-LightShaftsCoord-outES3Metal.txt

@@ -20,101 +20,101 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _CameraDepthTexture [[texture(0)]], sampler _mtlsmp__CameraDepthTexture [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float4 depth_1;
-  float2 coordTemp_2;
-  float sampleOnEpipolarLine_3;
-  float tmpvar_4;
+  float4 depth_1 = 0;
+  float2 coordTemp_2 = 0;
+  float sampleOnEpipolarLine_3 = 0;
+  float tmpvar_4 = 0;
   tmpvar_4 = clamp ((_mtl_i.xlv_TEXCOORD0.y - (0.5 / _mtl_u._CoordTexDim.y)), 0.0, 1.0);
   sampleOnEpipolarLine_3 = ((_mtl_i.xlv_TEXCOORD0.x - (0.5 / _mtl_u._CoordTexDim.x)) * (_mtl_u._CoordTexDim.x / (_mtl_u._CoordTexDim.x - 1.0)));
-  float tmpvar_5;
+  float tmpvar_5 = 0;
   tmpvar_5 = clamp (sampleOnEpipolarLine_3, 0.0, 1.0);
   sampleOnEpipolarLine_3 = tmpvar_5;
-  int tmpvar_6;
+  int tmpvar_6 = 0;
   tmpvar_6 = int(clamp (floor(
     (tmpvar_4 * 4.0)
   ), 0.0, 3.0));
-  float tmpvar_7;
+  float tmpvar_7 = 0;
   tmpvar_7 = (-1.0 + (2.0 * fract(
     (tmpvar_4 * 4.0)
   )));
-  float4 tmpvar_8;
+  float4 tmpvar_8 = 0;
   tmpvar_8.xz = float2(-1.0, 1.0);
   tmpvar_8.y = tmpvar_7;
   tmpvar_8.w = -(tmpvar_7);
-  float4 tmpvar_9;
+  float4 tmpvar_9 = 0;
   tmpvar_9.yw = float2(-1.0, 1.0);
   tmpvar_9.x = -(tmpvar_7);
   tmpvar_9.z = tmpvar_7;
-  bool4 tmpvar_10;
+  bool4 tmpvar_10 = false;
   tmpvar_10 = bool4((int4(tmpvar_6) == int4(0, 1, 2, 3)));
-  half4 tmpvar_11;
+  half4 tmpvar_11 = 0;
   tmpvar_11 = half4(tmpvar_10);
-  half4 tmpvar_12;
+  half4 tmpvar_12 = 0;
   tmpvar_12 = half4(tmpvar_10);
-  float2 tmpvar_13;
+  float2 tmpvar_13 = 0;
   tmpvar_13.x = dot (tmpvar_9, (float4)tmpvar_11);
   tmpvar_13.y = dot (tmpvar_8, (float4)tmpvar_12);
   coordTemp_2 = ((mix (_mtl_u._LightPos.xy, 
     -(tmpvar_13)
   , float2(tmpvar_5)) * 0.5) + 0.5);
-  float4 tmpvar_14;
+  float4 tmpvar_14 = 0;
   tmpvar_14.zw = float2(0.0, 0.0);
   tmpvar_14.xy = coordTemp_2;
   coordTemp_2 = ((floor(
     (coordTemp_2 * _mtl_u._ScreenTexDim.xy)
   ) + 0.5) * _mtl_u._ScreenTexDim.zw);
-  half4 tmpvar_15;
+  half4 tmpvar_15 = 0;
   tmpvar_15 = _CameraDepthTexture.sample(_mtlsmp__CameraDepthTexture, (float2)(coordTemp_2));
-  float tmpvar_16;
-  float z_17;
+  float tmpvar_16 = 0;
+  float z_17 = 0;
   z_17 = float(tmpvar_15.x);
   tmpvar_16 = (1.0/(((_mtl_u._ZBufferParams.x * z_17) + _mtl_u._ZBufferParams.y)));
   depth_1 = float4(tmpvar_16);
-  float4 v_18;
+  float4 v_18 = 0;
   v_18.x = _mtl_u._FrustumRays[0].x;
   v_18.y = _mtl_u._FrustumRays[1].x;
   v_18.z = _mtl_u._FrustumRays[2].x;
   v_18.w = _mtl_u._FrustumRays[3].x;
-  float4 v_19;
+  float4 v_19 = 0;
   v_19.x = _mtl_u._FrustumRays[0].y;
   v_19.y = _mtl_u._FrustumRays[1].y;
   v_19.z = _mtl_u._FrustumRays[2].y;
   v_19.w = _mtl_u._FrustumRays[3].y;
-  float4 v_20;
+  float4 v_20 = 0;
   v_20.x = _mtl_u._FrustumRays[0].w;
   v_20.y = _mtl_u._FrustumRays[1].w;
   v_20.z = _mtl_u._FrustumRays[2].w;
   v_20.w = _mtl_u._FrustumRays[3].w;
-  float4 v_21;
+  float4 v_21 = 0;
   v_21.x = _mtl_u._FrustumRays[0].z;
   v_21.y = _mtl_u._FrustumRays[1].z;
   v_21.z = _mtl_u._FrustumRays[2].z;
   v_21.w = _mtl_u._FrustumRays[3].z;
-  float3 tmpvar_22;
+  float3 tmpvar_22 = 0;
   tmpvar_22 = mix (mix (v_18.xyz, v_19.xyz, tmpvar_14.xxx), mix (v_20.xyz, v_21.xyz, tmpvar_14.xxx), tmpvar_14.yyy);
-  float tmpvar_23;
+  float tmpvar_23 = 0;
   tmpvar_23 = sqrt(dot (tmpvar_22, tmpvar_22));
-  bool tmpvar_24;
-  float3 tmpvar_25;
+  bool tmpvar_24 = false;
+  float3 tmpvar_25 = 0;
   tmpvar_25 = (1.0/((tmpvar_22 / tmpvar_23)));
-  float3 tmpvar_26;
+  float3 tmpvar_26 = 0;
   tmpvar_26 = (tmpvar_25 * (-0.5 - _mtl_u._CameraPosLocal.xyz));
-  float3 tmpvar_27;
+  float3 tmpvar_27 = 0;
   tmpvar_27 = (tmpvar_25 * (0.5 - _mtl_u._CameraPosLocal.xyz));
-  float3 tmpvar_28;
+  float3 tmpvar_28 = 0;
   tmpvar_28 = min (tmpvar_27, tmpvar_26);
-  float3 tmpvar_29;
+  float3 tmpvar_29 = 0;
   tmpvar_29 = max (tmpvar_27, tmpvar_26);
-  float2 tmpvar_30;
+  float2 tmpvar_30 = 0;
   tmpvar_30 = max (tmpvar_28.xx, tmpvar_28.yz);
-  float tmpvar_31;
+  float tmpvar_31 = 0;
   tmpvar_31 = max (tmpvar_30.x, tmpvar_30.y);
-  float2 tmpvar_32;
+  float2 tmpvar_32 = 0;
   tmpvar_32 = min (tmpvar_29.xx, tmpvar_29.yz);
-  float tmpvar_33;
+  float tmpvar_33 = 0;
   tmpvar_33 = min (tmpvar_32.x, tmpvar_32.y);
   tmpvar_24 = bool(((tmpvar_31 < tmpvar_33) && (tmpvar_33 > 0.0)));
-  if (((bool)!(tmpvar_24) || (tmpvar_16 < (tmpvar_31 / tmpvar_23)))) {
+  if (((bool)(!(tmpvar_24)) || (tmpvar_16 < (tmpvar_31 / tmpvar_23)))) {
     depth_1 = -(float4(tmpvar_16));
   } else {
     depth_1 = min (depth_1, float4((tmpvar_33 / tmpvar_23)));

3rdparty/glsl-optimizer/tests/fragment/z-alphabumpspec-outES3Metal.txt

@@ -21,26 +21,26 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _MainTex [[texture(1)]], sampler _mtlsmp__MainTex [[sampler(1)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  half3 tmpvar_2;
-  half tmpvar_3;
-  half4 tmpvar_4;
+  half4 c_1 = 0;
+  half3 tmpvar_2 = 0;
+  half tmpvar_3 = 0;
+  half4 tmpvar_4 = 0;
   tmpvar_4 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i._uv0.xy));
   tmpvar_2 = (tmpvar_4.xyz * _mtl_u._Color.xyz);
   tmpvar_3 = (tmpvar_4.w * _mtl_u._Color.w);
-  half4 tmpvar_5;
+  half4 tmpvar_5 = 0;
   tmpvar_5 = _BumpMap.sample(_mtlsmp__BumpMap, (float2)(_mtl_i._uv0.zw));
-  half4 packednormal_6;
+  half4 packednormal_6 = 0;
   packednormal_6 = tmpvar_5;
-  half4 normal_7;
-  normal_7.xy = ((packednormal_6.wy * (half)2.0) - (half)1.0);
-  normal_7.z = sqrt((((half)1.0 - 
+  half4 normal_7 = 0;
+  normal_7.xy = ((packednormal_6.wy * (half)(2.0)) - (half)(1.0));
+  normal_7.z = sqrt((((half)(1.0) - 
     (normal_7.x * normal_7.x)
   ) - (normal_7.y * normal_7.y)));
-  half4 c_8;
-  half spec_9;
-  half tmpvar_10;
-  float y_11;
+  half4 c_8 = 0;
+  half spec_9 = 0;
+  half tmpvar_10 = 0;
+  float y_11 = 0;
   y_11 = (_mtl_u._Shininess * 128.0);
   tmpvar_10 = ((half)pow ((float)max ((half)0.0, dot (normal_7.xyz, 
     normalize((_mtl_i._uv2 + normalize(_mtl_i._uv1)))
@@ -52,11 +52,11 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
     max ((half)0.0, dot (normal_7.xyz, _mtl_i._uv2))
   ) + (
     (_mtl_u._LightColor0.xyz * _mtl_u._SpecColor.xyz)
-   * spec_9)) * (half)2.0);
+   * spec_9)) * (half)(2.0));
   c_8.w = (tmpvar_3 + ((_mtl_u._LightColor0.w * _mtl_u._SpecColor.w) * spec_9));
   c_1.xyz = (c_8.xyz + (tmpvar_2 * _mtl_i._uv3));
   c_1.w = tmpvar_3;
-  half4 tmpvar_12;
+  half4 tmpvar_12 = 0;
   tmpvar_12 = c_1;
   _mtl_o._fragData = tmpvar_12;
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/z-collectshadows-outES3Metal.txt

@@ -23,34 +23,34 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _ShadowMapTexture [[texture(1)]], sampler _mtlsmp__ShadowMapTexture [[sampler(1)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 tmpvar_1;
-  float4 res_2;
-  float depth_3;
-  half4 tmpvar_4;
+  half4 tmpvar_1 = 0;
+  float4 res_2 = 0;
+  float depth_3 = 0;
+  half4 tmpvar_4 = 0;
   tmpvar_4 = _CameraDepthTexture.sample(_mtlsmp__CameraDepthTexture, (float2)(_mtl_i.xlv_TEXCOORD0));
   depth_3 = float(tmpvar_4.x);
-  float tmpvar_5;
+  float tmpvar_5 = 0;
   tmpvar_5 = (1.0/(((_mtl_u._ZBufferParams.x * depth_3) + _mtl_u._ZBufferParams.y)));
   depth_3 = tmpvar_5;
-  float4 tmpvar_6;
+  float4 tmpvar_6 = 0;
   tmpvar_6.w = 1.0;
   tmpvar_6.xyz = (_mtl_i.xlv_TEXCOORD1 * tmpvar_5);
-  half shadow_7;
-  float4 weights_8;
-  float4 far_9;
-  float4 near_10;
-  bool4 tmpvar_11;
+  half shadow_7 = 0;
+  float4 weights_8 = 0;
+  float4 far_9 = 0;
+  float4 near_10 = 0;
+  bool4 tmpvar_11 = false;
   tmpvar_11 = bool4((tmpvar_6.zzzz >= _mtl_u._LightSplitsNear));
-  half4 tmpvar_12;
+  half4 tmpvar_12 = 0;
   tmpvar_12 = half4(tmpvar_11);
   near_10 = float4(tmpvar_12);
-  bool4 tmpvar_13;
+  bool4 tmpvar_13 = false;
   tmpvar_13 = bool4((tmpvar_6.zzzz < _mtl_u._LightSplitsFar));
-  half4 tmpvar_14;
+  half4 tmpvar_14 = 0;
   tmpvar_14 = half4(tmpvar_13);
   far_9 = float4(tmpvar_14);
   weights_8 = (near_10 * far_9);
-  float4 tmpvar_15;
+  float4 tmpvar_15 = 0;
   tmpvar_15.w = 1.0;
   tmpvar_15.xyz = (((
     ((_mtl_u._View2Shadow * tmpvar_6).xyz * weights_8.x)
@@ -59,10 +59,10 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ) + (
     (_mtl_u._View2Shadow2 * tmpvar_6)
   .xyz * weights_8.z)) + ((_mtl_u._View2Shadow3 * tmpvar_6).xyz * weights_8.w));
-  half4 tmpvar_16;
+  half4 tmpvar_16 = 0;
   tmpvar_16 = _ShadowMapTexture.sample(_mtlsmp__ShadowMapTexture, (float2)(tmpvar_15.xy));
-  float tmpvar_17;
-  if (((float)tmpvar_16.x < tmpvar_15.z)) {
+  float tmpvar_17 = 0;
+  if (((float)(tmpvar_16.x) < tmpvar_15.z)) {
     tmpvar_17 = _mtl_u._LightShadowData.x;
   } else {
     tmpvar_17 = 1.0;
@@ -70,9 +70,9 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   shadow_7 = half(tmpvar_17);
   res_2.x = float(shadow_7);
   res_2.y = 1.0;
-  float2 enc_18;
+  float2 enc_18 = 0;
   enc_18 = (float2(1.0, 255.0) * (1.0 - tmpvar_5));
-  float2 tmpvar_19;
+  float2 tmpvar_19 = 0;
   tmpvar_19 = fract(enc_18);
   enc_18.y = tmpvar_19.y;
   enc_18.x = (tmpvar_19.x - (tmpvar_19.y * 0.00392157));

3rdparty/glsl-optimizer/tests/fragment/z-fxaa-preset3-outES3Metal.txt

@@ -14,119 +14,119 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _MainTex [[texture(0)]], sampler _mtlsmp__MainTex [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float2 rcpFrame_1;
+  float2 rcpFrame_1 = 0;
   rcpFrame_1 = _mtl_u._MainTex_TexelSize.xy;
-  half3 tmpvar_2;
-  bool doneP_4;
-  bool doneN_5;
-  half lumaEndP_6;
-  half lumaEndN_7;
-  float2 offNP_8;
-  float2 posP_9;
-  float2 posN_10;
-  half gradientN_11;
-  float lengthSign_12;
-  half3 rgbL_13;
-  half lumaS_14;
-  half lumaN_15;
-  float4 tmpvar_16;
+  half3 tmpvar_2 = 0;
+  bool doneP_4 = false;
+  bool doneN_5 = false;
+  half lumaEndP_6 = 0;
+  half lumaEndN_7 = 0;
+  float2 offNP_8 = 0;
+  float2 posP_9 = 0;
+  float2 posN_10 = 0;
+  half gradientN_11 = 0;
+  float lengthSign_12 = 0;
+  half3 rgbL_13 = 0;
+  half lumaS_14 = 0;
+  half lumaN_15 = 0;
+  float4 tmpvar_16 = 0;
   tmpvar_16.zw = float2(0.0, 0.0);
   tmpvar_16.xy = (_mtl_i.xlv_TEXCOORD0 + (float2(0.0, -1.0) * _mtl_u._MainTex_TexelSize.xy));
-  half4 tmpvar_17;
+  half4 tmpvar_17 = 0;
   tmpvar_17 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_16.xy), level(0.0));
-  float4 tmpvar_18;
+  float4 tmpvar_18 = 0;
   tmpvar_18.zw = float2(0.0, 0.0);
   tmpvar_18.xy = (_mtl_i.xlv_TEXCOORD0 + (float2(-1.0, 0.0) * _mtl_u._MainTex_TexelSize.xy));
-  half4 tmpvar_19;
+  half4 tmpvar_19 = 0;
   tmpvar_19 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_18.xy), level(0.0));
-  half4 tmpvar_20;
+  half4 tmpvar_20 = 0;
   tmpvar_20 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0), level(0.0));
-  float4 tmpvar_21;
+  float4 tmpvar_21 = 0;
   tmpvar_21.zw = float2(0.0, 0.0);
   tmpvar_21.xy = (_mtl_i.xlv_TEXCOORD0 + (float2(1.0, 0.0) * _mtl_u._MainTex_TexelSize.xy));
-  half4 tmpvar_22;
+  half4 tmpvar_22 = 0;
   tmpvar_22 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_21.xy), level(0.0));
-  float4 tmpvar_23;
+  float4 tmpvar_23 = 0;
   tmpvar_23.zw = float2(0.0, 0.0);
   tmpvar_23.xy = (_mtl_i.xlv_TEXCOORD0 + (float2(0.0, 1.0) * _mtl_u._MainTex_TexelSize.xy));
-  half4 tmpvar_24;
+  half4 tmpvar_24 = 0;
   tmpvar_24 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_23.xy), level(0.0));
-  half tmpvar_25;
-  tmpvar_25 = ((tmpvar_17.y * (half)1.963211) + tmpvar_17.x);
+  half tmpvar_25 = 0;
+  tmpvar_25 = ((tmpvar_17.y * (half)(1.963211)) + tmpvar_17.x);
   lumaN_15 = tmpvar_25;
-  half tmpvar_26;
-  tmpvar_26 = ((tmpvar_19.y * (half)1.963211) + tmpvar_19.x);
-  half tmpvar_27;
-  tmpvar_27 = ((tmpvar_20.y * (half)1.963211) + tmpvar_20.x);
-  half tmpvar_28;
-  tmpvar_28 = ((tmpvar_22.y * (half)1.963211) + tmpvar_22.x);
-  half tmpvar_29;
-  tmpvar_29 = ((tmpvar_24.y * (half)1.963211) + tmpvar_24.x);
+  half tmpvar_26 = 0;
+  tmpvar_26 = ((tmpvar_19.y * (half)(1.963211)) + tmpvar_19.x);
+  half tmpvar_27 = 0;
+  tmpvar_27 = ((tmpvar_20.y * (half)(1.963211)) + tmpvar_20.x);
+  half tmpvar_28 = 0;
+  tmpvar_28 = ((tmpvar_22.y * (half)(1.963211)) + tmpvar_22.x);
+  half tmpvar_29 = 0;
+  tmpvar_29 = ((tmpvar_24.y * (half)(1.963211)) + tmpvar_24.x);
   lumaS_14 = tmpvar_29;
-  half tmpvar_30;
+  half tmpvar_30 = 0;
   tmpvar_30 = max (max (tmpvar_27, tmpvar_25), max (max (tmpvar_26, tmpvar_29), tmpvar_28));
-  half tmpvar_31;
+  half tmpvar_31 = 0;
   tmpvar_31 = (tmpvar_30 - min (min (tmpvar_27, tmpvar_25), min (
     min (tmpvar_26, tmpvar_29)
   , tmpvar_28)));
-  half tmpvar_32;
-  tmpvar_32 = max ((half)0.04166667, (tmpvar_30 * (half)0.125));
+  half tmpvar_32 = 0;
+  tmpvar_32 = max ((half)0.04166667, (tmpvar_30 * (half)(0.125)));
   if ((tmpvar_31 < tmpvar_32)) {
     tmpvar_2 = tmpvar_20.xyz;
   } else {
-    half tmpvar_33;
+    half tmpvar_33 = 0;
     tmpvar_33 = min ((half)0.75, (max ((half)0.0, 
       ((abs((
-        (((tmpvar_25 + tmpvar_26) + (tmpvar_28 + tmpvar_29)) * (half)0.25)
-       - tmpvar_27)) / tmpvar_31) - (half)0.25)
-    ) * (half)1.333333));
-    float4 tmpvar_34;
+        (((tmpvar_25 + tmpvar_26) + (tmpvar_28 + tmpvar_29)) * (half)(0.25))
+       - tmpvar_27)) / tmpvar_31) - (half)(0.25))
+    ) * (half)(1.333333)));
+    float4 tmpvar_34 = 0;
     tmpvar_34.zw = float2(0.0, 0.0);
     tmpvar_34.xy = (_mtl_i.xlv_TEXCOORD0 - _mtl_u._MainTex_TexelSize.xy);
-    half4 tmpvar_35;
+    half4 tmpvar_35 = 0;
     tmpvar_35 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_34.xy), level(0.0));
-    float4 tmpvar_36;
+    float4 tmpvar_36 = 0;
     tmpvar_36.zw = float2(0.0, 0.0);
     tmpvar_36.xy = (_mtl_i.xlv_TEXCOORD0 + (float2(1.0, -1.0) * _mtl_u._MainTex_TexelSize.xy));
-    half4 tmpvar_37;
+    half4 tmpvar_37 = 0;
     tmpvar_37 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_36.xy), level(0.0));
-    float4 tmpvar_38;
+    float4 tmpvar_38 = 0;
     tmpvar_38.zw = float2(0.0, 0.0);
     tmpvar_38.xy = (_mtl_i.xlv_TEXCOORD0 + (float2(-1.0, 1.0) * _mtl_u._MainTex_TexelSize.xy));
-    half4 tmpvar_39;
+    half4 tmpvar_39 = 0;
     tmpvar_39 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_38.xy), level(0.0));
-    float4 tmpvar_40;
+    float4 tmpvar_40 = 0;
     tmpvar_40.zw = float2(0.0, 0.0);
     tmpvar_40.xy = (_mtl_i.xlv_TEXCOORD0 + _mtl_u._MainTex_TexelSize.xy);
-    half4 tmpvar_41;
+    half4 tmpvar_41 = 0;
     tmpvar_41 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_40.xy), level(0.0));
     rgbL_13 = (((tmpvar_17.xyz + tmpvar_19.xyz) + (tmpvar_20.xyz + tmpvar_22.xyz)) + ((tmpvar_24.xyz + tmpvar_35.xyz) + (
       (tmpvar_37.xyz + tmpvar_39.xyz)
      + tmpvar_41.xyz)));
-    rgbL_13 = (rgbL_13 * (half3)float3(0.1111111, 0.1111111, 0.1111111));
-    half tmpvar_42;
-    tmpvar_42 = ((tmpvar_35.y * (half)1.963211) + tmpvar_35.x);
-    half tmpvar_43;
-    tmpvar_43 = ((tmpvar_37.y * (half)1.963211) + tmpvar_37.x);
-    half tmpvar_44;
-    tmpvar_44 = ((tmpvar_39.y * (half)1.963211) + tmpvar_39.x);
-    half tmpvar_45;
-    tmpvar_45 = ((tmpvar_41.y * (half)1.963211) + tmpvar_41.x);
-    bool tmpvar_46;
+    rgbL_13 = (rgbL_13 * (half3)(float3(0.1111111, 0.1111111, 0.1111111)));
+    half tmpvar_42 = 0;
+    tmpvar_42 = ((tmpvar_35.y * (half)(1.963211)) + tmpvar_35.x);
+    half tmpvar_43 = 0;
+    tmpvar_43 = ((tmpvar_37.y * (half)(1.963211)) + tmpvar_37.x);
+    half tmpvar_44 = 0;
+    tmpvar_44 = ((tmpvar_39.y * (half)(1.963211)) + tmpvar_39.x);
+    half tmpvar_45 = 0;
+    tmpvar_45 = ((tmpvar_41.y * (half)(1.963211)) + tmpvar_41.x);
+    bool tmpvar_46 = false;
     tmpvar_46 = (((
-      abs(((((half)0.25 * tmpvar_42) + ((half)-0.5 * tmpvar_26)) + ((half)0.25 * tmpvar_44)))
+      abs(((((half)(0.25) * tmpvar_42) + ((half)(-0.5) * tmpvar_26)) + ((half)(0.25) * tmpvar_44)))
      + 
-      abs(((((half)0.5 * tmpvar_25) - tmpvar_27) + ((half)0.5 * tmpvar_29)))
+      abs(((((half)(0.5) * tmpvar_25) - tmpvar_27) + ((half)(0.5) * tmpvar_29)))
     ) + abs(
-      ((((half)0.25 * tmpvar_43) + ((half)-0.5 * tmpvar_28)) + ((half)0.25 * tmpvar_45))
+      ((((half)(0.25) * tmpvar_43) + ((half)(-0.5) * tmpvar_28)) + ((half)(0.25) * tmpvar_45))
     )) >= ((
-      abs(((((half)0.25 * tmpvar_42) + ((half)-0.5 * tmpvar_25)) + ((half)0.25 * tmpvar_43)))
+      abs(((((half)(0.25) * tmpvar_42) + ((half)(-0.5) * tmpvar_25)) + ((half)(0.25) * tmpvar_43)))
      + 
-      abs(((((half)0.5 * tmpvar_26) - tmpvar_27) + ((half)0.5 * tmpvar_28)))
+      abs(((((half)(0.5) * tmpvar_26) - tmpvar_27) + ((half)(0.5) * tmpvar_28)))
     ) + abs(
-      ((((half)0.25 * tmpvar_44) + ((half)-0.5 * tmpvar_29)) + ((half)0.25 * tmpvar_45))
+      ((((half)(0.25) * tmpvar_44) + ((half)(-0.5) * tmpvar_29)) + ((half)(0.25) * tmpvar_45))
     )));
-    float tmpvar_47;
+    float tmpvar_47 = 0;
     if (tmpvar_46) {
       tmpvar_47 = -(_mtl_u._MainTex_TexelSize.y);
     } else {
@@ -139,14 +139,14 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
     if (!(tmpvar_46)) {
       lumaS_14 = tmpvar_28;
     };
-    half tmpvar_48;
+    half tmpvar_48 = 0;
     tmpvar_48 = abs((lumaN_15 - tmpvar_27));
     gradientN_11 = tmpvar_48;
-    half tmpvar_49;
+    half tmpvar_49 = 0;
     tmpvar_49 = abs((lumaS_14 - tmpvar_27));
-    lumaN_15 = ((lumaN_15 + tmpvar_27) * (half)0.5);
-    lumaS_14 = ((lumaS_14 + tmpvar_27) * (half)0.5);
-    bool tmpvar_50;
+    lumaN_15 = ((lumaN_15 + tmpvar_27) * (half)(0.5));
+    lumaS_14 = ((lumaS_14 + tmpvar_27) * (half)(0.5));
+    bool tmpvar_50 = false;
     tmpvar_50 = (tmpvar_48 >= tmpvar_49);
     if (!(tmpvar_50)) {
       lumaN_15 = lumaS_14;
@@ -157,30 +157,30 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
     if (!(tmpvar_50)) {
       lengthSign_12 = -(tmpvar_47);
     };
-    float tmpvar_51;
+    float tmpvar_51 = 0;
     if (tmpvar_46) {
       tmpvar_51 = 0.0;
     } else {
       tmpvar_51 = (lengthSign_12 * 0.5);
     };
     posN_10.x = (_mtl_i.xlv_TEXCOORD0.x + tmpvar_51);
-    float tmpvar_52;
+    float tmpvar_52 = 0;
     if (tmpvar_46) {
       tmpvar_52 = (lengthSign_12 * 0.5);
     } else {
       tmpvar_52 = 0.0;
     };
     posN_10.y = (_mtl_i.xlv_TEXCOORD0.y + tmpvar_52);
-    gradientN_11 = (gradientN_11 * (half)0.25);
+    gradientN_11 = (gradientN_11 * (half)(0.25));
     posP_9 = posN_10;
-    float2 tmpvar_53;
+    float2 tmpvar_53 = 0;
     if (tmpvar_46) {
-      float2 tmpvar_54;
+      float2 tmpvar_54 = 0;
       tmpvar_54.y = 0.0;
       tmpvar_54.x = rcpFrame_1.x;
       tmpvar_53 = tmpvar_54;
     } else {
-      float2 tmpvar_55;
+      float2 tmpvar_55 = 0;
       tmpvar_55.x = 0.0;
       tmpvar_55.y = rcpFrame_1.y;
       tmpvar_53 = tmpvar_55;
@@ -194,23 +194,23 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
     posP_9 = (posP_9 + tmpvar_53);
     for (int i_3 = 0; i_3 < 16; i_3++) {
       if (!(doneN_5)) {
-        half4 tmpvar_56;
+        half4 tmpvar_56 = 0;
         tmpvar_56 = _MainTex.sample(_mtlsmp__MainTex, (float2)(posN_10), level(0.0));
-        lumaEndN_7 = ((tmpvar_56.y * (half)1.963211) + tmpvar_56.x);
+        lumaEndN_7 = ((tmpvar_56.y * (half)(1.963211)) + tmpvar_56.x);
       };
       if (!(doneP_4)) {
-        half4 tmpvar_57;
+        half4 tmpvar_57 = 0;
         tmpvar_57 = _MainTex.sample(_mtlsmp__MainTex, (float2)(posP_9), level(0.0));
-        lumaEndP_6 = ((tmpvar_57.y * (half)1.963211) + tmpvar_57.x);
+        lumaEndP_6 = ((tmpvar_57.y * (half)(1.963211)) + tmpvar_57.x);
       };
-      bool tmpvar_58;
+      bool tmpvar_58 = false;
       if (doneN_5) {
         tmpvar_58 = bool(bool(1));
       } else {
         tmpvar_58 = (abs((lumaEndN_7 - lumaN_15)) >= gradientN_11);
       };
       doneN_5 = tmpvar_58;
-      bool tmpvar_59;
+      bool tmpvar_59 = false;
       if (doneP_4) {
         tmpvar_59 = bool(bool(1));
       } else {
@@ -227,66 +227,66 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
         posP_9 = (posP_9 + offNP_8);
       };
     };
-    float tmpvar_60;
+    float tmpvar_60 = 0;
     if (tmpvar_46) {
       tmpvar_60 = (_mtl_i.xlv_TEXCOORD0.x - posN_10.x);
     } else {
       tmpvar_60 = (_mtl_i.xlv_TEXCOORD0.y - posN_10.y);
     };
-    float tmpvar_61;
+    float tmpvar_61 = 0;
     if (tmpvar_46) {
       tmpvar_61 = (posP_9.x - _mtl_i.xlv_TEXCOORD0.x);
     } else {
       tmpvar_61 = (posP_9.y - _mtl_i.xlv_TEXCOORD0.y);
     };
-    bool tmpvar_62;
+    bool tmpvar_62 = false;
     tmpvar_62 = (tmpvar_60 < tmpvar_61);
-    half tmpvar_63;
+    half tmpvar_63 = 0;
     if (tmpvar_62) {
       tmpvar_63 = lumaEndN_7;
     } else {
       tmpvar_63 = lumaEndP_6;
     };
     lumaEndN_7 = tmpvar_63;
-    if ((((tmpvar_27 - lumaN_15) < (half)0.0) == ((tmpvar_63 - lumaN_15) < (half)0.0))) {
+    if ((((tmpvar_27 - lumaN_15) < (half)(0.0)) == ((tmpvar_63 - lumaN_15) < (half)(0.0)))) {
       lengthSign_12 = 0.0;
     };
-    float tmpvar_64;
+    float tmpvar_64 = 0;
     tmpvar_64 = (tmpvar_61 + tmpvar_60);
-    float tmpvar_65;
+    float tmpvar_65 = 0;
     if (tmpvar_62) {
       tmpvar_65 = tmpvar_60;
     } else {
       tmpvar_65 = tmpvar_61;
     };
-    float tmpvar_66;
+    float tmpvar_66 = 0;
     tmpvar_66 = ((0.5 + (tmpvar_65 * 
       (-1.0 / tmpvar_64)
     )) * lengthSign_12);
-    float tmpvar_67;
+    float tmpvar_67 = 0;
     if (tmpvar_46) {
       tmpvar_67 = 0.0;
     } else {
       tmpvar_67 = tmpvar_66;
     };
-    float tmpvar_68;
+    float tmpvar_68 = 0;
     if (tmpvar_46) {
       tmpvar_68 = tmpvar_66;
     } else {
       tmpvar_68 = 0.0;
     };
-    float2 tmpvar_69;
+    float2 tmpvar_69 = 0;
     tmpvar_69.x = (_mtl_i.xlv_TEXCOORD0.x + tmpvar_67);
     tmpvar_69.y = (_mtl_i.xlv_TEXCOORD0.y + tmpvar_68);
-    half4 tmpvar_70;
+    half4 tmpvar_70 = 0;
     tmpvar_70 = _MainTex.sample(_mtlsmp__MainTex, (float2)(tmpvar_69), level(0.0));
-    half3 tmpvar_71;
+    half3 tmpvar_71 = 0;
     tmpvar_71.x = -(tmpvar_33);
     tmpvar_71.y = -(tmpvar_33);
     tmpvar_71.z = -(tmpvar_33);
     tmpvar_2 = ((tmpvar_71 * tmpvar_70.xyz) + ((rgbL_13 * half3(tmpvar_33)) + tmpvar_70.xyz));
   };
-  half4 tmpvar_72;
+  half4 tmpvar_72 = 0;
   tmpvar_72.w = half(0.0);
   tmpvar_72.xyz = tmpvar_2;
   _mtl_o._fragData = tmpvar_72;

3rdparty/glsl-optimizer/tests/fragment/z-prepasslight-outES3Metal.txt

@@ -28,138 +28,138 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texturecube<half> _ShadowMapTexture [[texture(4)]], sampler _mtlsmp__ShadowMapTexture [[sampler(4)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 res_1;
-  float spec_2;
-  half3 h_3;
-  float atten_4;
-  half3 lightDir_5;
-  float3 tolight_6;
-  float3 wpos_7;
-  float depth_8;
-  half3 normal_9;
-  half4 nspec_10;
-  float2 uv_11;
+  half4 res_1 = 0;
+  float spec_2 = 0;
+  half3 h_3 = 0;
+  float atten_4 = 0;
+  half3 lightDir_5 = 0;
+  float3 tolight_6 = 0;
+  float3 wpos_7 = 0;
+  float depth_8 = 0;
+  half3 normal_9 = 0;
+  half4 nspec_10 = 0;
+  float2 uv_11 = 0;
   uv_11 = (_mtl_i.xlv_TEXCOORD0.xy / _mtl_i.xlv_TEXCOORD0.w);
-  half4 tmpvar_12;
+  half4 tmpvar_12 = 0;
   tmpvar_12 = _CameraNormalsTexture.sample(_mtlsmp__CameraNormalsTexture, (float2)(uv_11));
   nspec_10 = tmpvar_12;
-  normal_9 = ((nspec_10.xyz * (half)2.0) - (half)1.0);
+  normal_9 = ((nspec_10.xyz * (half)(2.0)) - (half)(1.0));
   normal_9 = normalize(normal_9);
-  half4 tmpvar_13;
+  half4 tmpvar_13 = 0;
   tmpvar_13 = _CameraDepthTexture.sample(_mtlsmp__CameraDepthTexture, (float2)(uv_11));
   depth_8 = float(tmpvar_13.x);
-  float tmpvar_14;
+  float tmpvar_14 = 0;
   tmpvar_14 = (1.0/(((_mtl_u._ZBufferParams.x * depth_8) + _mtl_u._ZBufferParams.y)));
   depth_8 = tmpvar_14;
-  float4 tmpvar_15;
+  float4 tmpvar_15 = 0;
   tmpvar_15.w = 1.0;
   tmpvar_15.xyz = ((_mtl_i.xlv_TEXCOORD1 * (_mtl_u._ProjectionParams.z / _mtl_i.xlv_TEXCOORD1.z)) * tmpvar_14);
   wpos_7 = (_mtl_u._CameraToWorld * tmpvar_15).xyz;
   tolight_6 = (wpos_7 - _mtl_u._LightPos.xyz);
-  float3 tmpvar_16;
+  float3 tmpvar_16 = 0;
   tmpvar_16 = normalize(tolight_6);
   lightDir_5 = half3(-(tmpvar_16));
-  float2 tmpvar_17;
+  float2 tmpvar_17 = 0;
   tmpvar_17 = float2((dot (tolight_6, tolight_6) * _mtl_u._LightPos.w));
-  half4 tmpvar_18;
+  half4 tmpvar_18 = 0;
   tmpvar_18 = _LightTextureB0.sample(_mtlsmp__LightTextureB0, (float2)(tmpvar_17));
   atten_4 = float(tmpvar_18.w);
-  float mydist_19;
+  float mydist_19 = 0;
   mydist_19 = (sqrt(dot (tolight_6, tolight_6)) * _mtl_u._LightPositionRange.w);
   mydist_19 = (mydist_19 * 0.97);
-  float4 shadowVals_20;
-  float3 vec_21;
+  float4 shadowVals_20 = 0;
+  float3 vec_21 = 0;
   vec_21 = (tolight_6 + float3(0.0078125, 0.0078125, 0.0078125));
-  float4 packDist_22;
-  half4 tmpvar_23;
+  float4 packDist_22 = 0;
+  half4 tmpvar_23 = 0;
   tmpvar_23 = _ShadowMapTexture.sample(_mtlsmp__ShadowMapTexture, (float3)(vec_21));
   packDist_22 = float4(tmpvar_23);
   shadowVals_20.x = dot (packDist_22, float4(1.0, 0.00392157, 1.53787e-05, 6.22737e-09));
-  float3 vec_24;
+  float3 vec_24 = 0;
   vec_24 = (tolight_6 + float3(-0.0078125, -0.0078125, 0.0078125));
-  float4 packDist_25;
-  half4 tmpvar_26;
+  float4 packDist_25 = 0;
+  half4 tmpvar_26 = 0;
   tmpvar_26 = _ShadowMapTexture.sample(_mtlsmp__ShadowMapTexture, (float3)(vec_24));
   packDist_25 = float4(tmpvar_26);
   shadowVals_20.y = dot (packDist_25, float4(1.0, 0.00392157, 1.53787e-05, 6.22737e-09));
-  float3 vec_27;
+  float3 vec_27 = 0;
   vec_27 = (tolight_6 + float3(-0.0078125, 0.0078125, -0.0078125));
-  float4 packDist_28;
-  half4 tmpvar_29;
+  float4 packDist_28 = 0;
+  half4 tmpvar_29 = 0;
   tmpvar_29 = _ShadowMapTexture.sample(_mtlsmp__ShadowMapTexture, (float3)(vec_27));
   packDist_28 = float4(tmpvar_29);
   shadowVals_20.z = dot (packDist_28, float4(1.0, 0.00392157, 1.53787e-05, 6.22737e-09));
-  float3 vec_30;
+  float3 vec_30 = 0;
   vec_30 = (tolight_6 + float3(0.0078125, -0.0078125, -0.0078125));
-  float4 packDist_31;
-  half4 tmpvar_32;
+  float4 packDist_31 = 0;
+  half4 tmpvar_32 = 0;
   tmpvar_32 = _ShadowMapTexture.sample(_mtlsmp__ShadowMapTexture, (float3)(vec_30));
   packDist_31 = float4(tmpvar_32);
   shadowVals_20.w = dot (packDist_31, float4(1.0, 0.00392157, 1.53787e-05, 6.22737e-09));
-  bool4 tmpvar_33;
+  bool4 tmpvar_33 = false;
   tmpvar_33 = bool4((shadowVals_20 < float4(mydist_19)));
-  float4 tmpvar_34;
+  float4 tmpvar_34 = 0;
   tmpvar_34 = _mtl_u._LightShadowData.xxxx;
-  float tmpvar_35;
+  float tmpvar_35 = 0;
   if (tmpvar_33.x) {
     tmpvar_35 = tmpvar_34.x;
   } else {
     tmpvar_35 = 1.0;
   };
-  float tmpvar_36;
+  float tmpvar_36 = 0;
   if (tmpvar_33.y) {
     tmpvar_36 = tmpvar_34.y;
   } else {
     tmpvar_36 = 1.0;
   };
-  float tmpvar_37;
+  float tmpvar_37 = 0;
   if (tmpvar_33.z) {
     tmpvar_37 = tmpvar_34.z;
   } else {
     tmpvar_37 = 1.0;
   };
-  float tmpvar_38;
+  float tmpvar_38 = 0;
   if (tmpvar_33.w) {
     tmpvar_38 = tmpvar_34.w;
   } else {
     tmpvar_38 = 1.0;
   };
-  half4 tmpvar_39;
+  half4 tmpvar_39 = 0;
   tmpvar_39.x = half(tmpvar_35);
   tmpvar_39.y = half(tmpvar_36);
   tmpvar_39.z = half(tmpvar_37);
   tmpvar_39.w = half(tmpvar_38);
-  half tmpvar_40;
+  half tmpvar_40 = 0;
   tmpvar_40 = dot (tmpvar_39, (half4)float4(0.25, 0.25, 0.25, 0.25));
-  atten_4 = (atten_4 * (float)tmpvar_40);
-  float4 tmpvar_41;
+  atten_4 = (atten_4 * (float)(tmpvar_40));
+  float4 tmpvar_41 = 0;
   tmpvar_41.w = 1.0;
   tmpvar_41.xyz = wpos_7;
-  half4 tmpvar_42;
-  float3 P_43;
+  half4 tmpvar_42 = 0;
+  float3 P_43 = 0;
   P_43 = (_mtl_u._LightMatrix0 * tmpvar_41).xyz;
   tmpvar_42 = _LightTexture0.sample(_mtlsmp__LightTexture0, (float3)(P_43));
-  atten_4 = (atten_4 * (float)tmpvar_42.w);
-  float3 tmpvar_44;
-  tmpvar_44 = normalize(((float3)lightDir_5 - normalize(
+  atten_4 = (atten_4 * (float)(tmpvar_42.w));
+  float3 tmpvar_44 = 0;
+  tmpvar_44 = normalize(((float3)(lightDir_5) - normalize(
     (wpos_7 - _mtl_u._WorldSpaceCameraPos)
   )));
   h_3 = half3(tmpvar_44);
-  half tmpvar_45;
-  tmpvar_45 = pow (max ((half)0.0, dot (h_3, normal_9)), (nspec_10.w * (half)128.0));
+  half tmpvar_45 = 0;
+  tmpvar_45 = pow (max ((half)0.0, dot (h_3, normal_9)), (nspec_10.w * (half)(128.0)));
   spec_2 = float(tmpvar_45);
   spec_2 = (spec_2 * clamp (atten_4, 0.0, 1.0));
-  res_1.xyz = half3((_mtl_u._LightColor.xyz * ((float)max ((half)0.0, 
+  res_1.xyz = half3((_mtl_u._LightColor.xyz * ((float)(max ((half)0.0, 
     dot (lightDir_5, normal_9)
-  ) * atten_4)));
-  half3 c_46;
+  )) * atten_4)));
+  half3 c_46 = 0;
   c_46 = half3(_mtl_u._LightColor.xyz);
-  res_1.w = half((spec_2 * (float)dot (c_46, (half3)float3(0.22, 0.707, 0.071))));
-  float tmpvar_47;
+  res_1.w = half((spec_2 * (float)(dot (c_46, (half3)float3(0.22, 0.707, 0.071)))));
+  float tmpvar_47 = 0;
   tmpvar_47 = clamp ((1.0 - (
     (tmpvar_15.z * _mtl_u.unity_LightmapFade.z)
    + _mtl_u.unity_LightmapFade.w)), 0.0, 1.0);
-  res_1 = ((half4)((float4)res_1 * tmpvar_47));
+  res_1 = ((half4)((float4)(res_1) * tmpvar_47));
   _mtl_o._fragData = exp2(-(res_1));
   return _mtl_o;
 }

3rdparty/glsl-optimizer/tests/fragment/z-tonemap-usercurve-outES3Metal.txt

@@ -15,26 +15,26 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _Curve [[texture(1)]], sampler _mtlsmp__Curve [[sampler(1)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float newLum_1;
-  float3 cie_2;
-  float4 color_3;
-  half4 tmpvar_4;
+  float newLum_1 = 0;
+  float3 cie_2 = 0;
+  float4 color_3 = 0;
+  half4 tmpvar_4 = 0;
   tmpvar_4 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0));
   color_3 = float4(tmpvar_4);
-  float3 Yxy_5;
-  float3 tmpvar_6;
+  float3 Yxy_5 = 0;
+  float3 tmpvar_6 = 0;
   tmpvar_6 = (float3x3(float3(0.514136, 0.265068, 0.0241188), float3(0.323879, 0.670234, 0.122818), float3(0.160364, 0.0640916, 0.844427)) * color_3.xyz);
   Yxy_5.x = tmpvar_6.y;
   Yxy_5.yz = (tmpvar_6.xy / dot (float3(1.0, 1.0, 1.0), tmpvar_6));
   cie_2.yz = Yxy_5.yz;
-  float2 tmpvar_7;
+  float2 tmpvar_7 = 0;
   tmpvar_7.y = 0.5;
   tmpvar_7.x = (tmpvar_6.y * _mtl_u._RangeScale);
-  half tmpvar_8;
+  half tmpvar_8 = 0;
   tmpvar_8 = _Curve.sample(_mtlsmp__Curve, (float2)(tmpvar_7)).x;
   newLum_1 = float(tmpvar_8);
   cie_2.x = newLum_1;
-  float3 XYZ_9;
+  float3 XYZ_9 = 0;
   XYZ_9.x = ((newLum_1 * Yxy_5.y) / Yxy_5.z);
   XYZ_9.y = cie_2.x;
   XYZ_9.z = ((newLum_1 * (

3rdparty/glsl-optimizer/tests/fragment/z-treeleafloop-outES3Metal.txt

@@ -24,31 +24,31 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _TranslucencyMap [[texture(2)]], sampler _mtlsmp__TranslucencyMap [[sampler(2)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  half nh_2;
-  half nl_3;
-  half3 lightColor_4;
-  half3 backContribs_5;
-  half3 light_6;
-  half gloss_7;
-  half specular_8;
-  half3 albedo_9;
-  half4 tmpvar_10;
+  half4 c_1 = 0;
+  half nh_2 = 0;
+  half nl_3 = 0;
+  half3 lightColor_4 = 0;
+  half3 backContribs_5 = 0;
+  half3 light_6 = 0;
+  half gloss_7 = 0;
+  half specular_8 = 0;
+  half3 albedo_9 = 0;
+  half4 tmpvar_10 = 0;
   tmpvar_10 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0));
-  half x_11;
+  half x_11 = 0;
   x_11 = (tmpvar_10.w - _mtl_u._Cutoff);
-  if ((x_11 < (half)0.0)) {
+  if ((x_11 < (half)(0.0))) {
     discard_fragment();
   };
-  albedo_9 = half3(((float3)tmpvar_10.xyz * _mtl_i.xlv_TEXCOORD1));
-  half4 tmpvar_12;
+  albedo_9 = half3(((float3)(tmpvar_10.xyz) * _mtl_i.xlv_TEXCOORD1));
+  half4 tmpvar_12 = 0;
   tmpvar_12 = _BumpSpecMap.sample(_mtlsmp__BumpSpecMap, (float2)(_mtl_i.xlv_TEXCOORD0));
-  specular_8 = (tmpvar_12.x * (half)128.0);
-  half4 tmpvar_13;
+  specular_8 = (tmpvar_12.x * (half)(128.0));
+  half4 tmpvar_13 = 0;
   tmpvar_13 = _TranslucencyMap.sample(_mtlsmp__TranslucencyMap, (float2)(_mtl_i.xlv_TEXCOORD0));
   gloss_7 = tmpvar_13.w;
   light_6 = (_mtl_u.UNITY_LIGHTMODEL_AMBIENT.xyz * albedo_9);
-  backContribs_5 = half3((_mtl_i.xlv_TEXCOORD2 * (float)tmpvar_13.z));
+  backContribs_5 = half3((_mtl_i.xlv_TEXCOORD2 * (float)(tmpvar_13.z)));
   lightColor_4 = half3(_mtl_u._TerrainTreeLightColors[0].xyz);
   nl_3 = half(_mtl_i.xlv_TEXCOORD3.x);
   nh_2 = half(_mtl_i.xlv_TEXCOORD4.x);
@@ -73,7 +73,7 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
    + 
     (_mtl_u._SpecColor.xyz * (pow (nh_2, specular_8) * gloss_7))
   ) * lightColor_4));
-  c_1.xyz = (light_6 * (half)2.0);
+  c_1.xyz = (light_6 * (half)(2.0));
   c_1.w = half(1.0);
   _mtl_o._fragData = c_1;
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/z-unishader-dirlm-outES3Metal.txt

@@ -35,10 +35,10 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _SelfIllum [[texture(11)]], sampler _mtlsmp__SelfIllum [[sampler(11)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half3 lightDir_1;
-  half3 env_2;
-  float3 tmpvar_3;
-  float3 tmpvar_4;
+  half3 lightDir_1 = 0;
+  half3 env_2 = 0;
+  float3 tmpvar_3 = 0;
+  float3 tmpvar_4 = 0;
   tmpvar_3 = _mtl_i.xlv_TEXCOORD3.xyz;
   tmpvar_4 = (((_mtl_i.xlv_TEXCOORD2.yzx * _mtl_i.xlv_TEXCOORD3.zxy) - (_mtl_i.xlv_TEXCOORD2.zxy * _mtl_i.xlv_TEXCOORD3.yzx)) * _mtl_i.xlv_TEXCOORD3.www);
   float3x3 tmpvar_5;
@@ -51,51 +51,51 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   tmpvar_5[2].x = tmpvar_3.z;
   tmpvar_5[2].y = tmpvar_4.z;
   tmpvar_5[2].z = _mtl_i.xlv_TEXCOORD2.z;
-  half3 normal_6;
-  normal_6.xy = ((_BumpMap.sample(_mtlsmp__BumpMap, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).wy * (half)2.0) - (half)1.0);
-  normal_6.xy = ((half2)((float2)normal_6.xy * _mtl_u._BumpScale));
-  normal_6.z = sqrt(((half)1.0 - clamp (
+  half3 normal_6 = 0;
+  normal_6.xy = ((_BumpMap.sample(_mtlsmp__BumpMap, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).wy * (half)(2.0)) - (half)(1.0));
+  normal_6.xy = ((half2)((float2)(normal_6.xy) * _mtl_u._BumpScale));
+  normal_6.z = sqrt(((half)(1.0) - clamp (
     dot (normal_6.xy, normal_6.xy)
   , (half)0.0, (half)1.0)));
-  half3 normal_7;
-  normal_7.xy = ((_DetailNormalMap.sample(_mtlsmp__DetailNormalMap, (float2)(_mtl_i.xlv_TEXCOORD0.zw)).wy * (half)2.0) - (half)1.0);
-  normal_7.xy = ((half2)((float2)normal_7.xy * _mtl_u._DetailNormalMapScale));
-  normal_7.z = sqrt(((half)1.0 - clamp (
+  half3 normal_7 = 0;
+  normal_7.xy = ((_DetailNormalMap.sample(_mtlsmp__DetailNormalMap, (float2)(_mtl_i.xlv_TEXCOORD0.zw)).wy * (half)(2.0)) - (half)(1.0));
+  normal_7.xy = ((half2)((float2)(normal_7.xy) * _mtl_u._DetailNormalMapScale));
+  normal_7.z = sqrt(((half)(1.0) - clamp (
     dot (normal_7.xy, normal_7.xy)
   , (half)0.0, (half)1.0)));
-  half3 tmpvar_8;
+  half3 tmpvar_8 = 0;
   tmpvar_8.xy = (normal_6.xy + normal_7.xy);
   tmpvar_8.z = (normal_6.z * normal_7.z);
-  half3 tmpvar_9;
+  half3 tmpvar_9 = 0;
   tmpvar_9 = normalize(tmpvar_8);
-  half3 tmpvar_10;
-  tmpvar_10 = ((half3)((float3)tmpvar_9 * tmpvar_5));
-  float3 tmpvar_11;
+  half3 tmpvar_10 = 0;
+  tmpvar_10 = ((half3)((float3)(tmpvar_9) * tmpvar_5));
+  float3 tmpvar_11 = 0;
   tmpvar_11 = normalize((_mtl_i.xlv_TEXCOORD1.xyz - _mtl_u._WorldSpaceCameraPos));
-  half4 tmpvar_12;
+  half4 tmpvar_12 = 0;
   tmpvar_12 = _SpecGlossMap.sample(_mtlsmp__SpecGlossMap, (float2)(_mtl_i.xlv_TEXCOORD0.xy));
-  half tmpvar_13;
+  half tmpvar_13 = 0;
   tmpvar_13 = dot (tmpvar_12.xyz, (half3)float3(0.299, 0.587, 0.114));
-  half tmpvar_14;
-  tmpvar_14 = ((half)1.0 - tmpvar_12.w);
-  half4 tmpvar_15;
-  tmpvar_15.xyz = ((half3)(tmpvar_11 - (float3)((half)2.0 * (
+  half tmpvar_14 = 0;
+  tmpvar_14 = ((half)(1.0) - tmpvar_12.w);
+  half4 tmpvar_15 = 0;
+  tmpvar_15.xyz = ((half3)(tmpvar_11 - (float3)(((half)(2.0) * (
     ((half)dot ((float3)tmpvar_10, tmpvar_11))
-   * tmpvar_10))));
-  tmpvar_15.w = (tmpvar_14 * (half)5.0);
-  half4 tmpvar_16;
+   * tmpvar_10)))));
+  tmpvar_15.w = (tmpvar_14 * (half)(5.0));
+  half4 tmpvar_16 = 0;
   tmpvar_16 = _SpecCube.sample(_mtlsmp__SpecCube, (float3)(tmpvar_15.xyz), level(tmpvar_15.w));
-  half tmpvar_17;
+  half tmpvar_17 = 0;
   tmpvar_17 = (tmpvar_16.w * tmpvar_16.w);
-  half2 tmpvar_18;
+  half2 tmpvar_18 = 0;
   tmpvar_18.x = tmpvar_17;
   tmpvar_18.y = (tmpvar_16.w * tmpvar_17);
-  env_2 = (((half3)((float3)(tmpvar_16.xyz * 
+  env_2 = (((half3)((float3)((tmpvar_16.xyz * 
     dot ((half2)float2(0.7532, 0.2468), tmpvar_18)
-  ) * _mtl_u._Exposure)) * _Occlusion.sample(_mtlsmp__Occlusion, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).x);
-  half4 tmpvar_19;
+  )) * _mtl_u._Exposure)) * _Occlusion.sample(_mtlsmp__Occlusion, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).x);
+  half4 tmpvar_19 = 0;
   tmpvar_19 = unity_Lightmap.sample(_mtlsmp_unity_Lightmap, (float2)(_mtl_i.xlv_TEXCOORD4.xy));
-  half4 tmpvar_20;
+  half4 tmpvar_20 = 0;
   tmpvar_20 = unity_LightmapInd.sample(_mtlsmp_unity_LightmapInd, (float2)(_mtl_i.xlv_TEXCOORD4.xy));
   float3x3 tmpvar_21;
   tmpvar_21[0].x = 0.816497;
@@ -107,80 +107,80 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   tmpvar_21[2].x = 0.57735;
   tmpvar_21[2].y = 0.57735;
   tmpvar_21[2].z = 0.57735;
-  half3 tmpvar_22;
-  tmpvar_22 = (((half)8.0 * tmpvar_20.w) * tmpvar_20.xyz);
-  float3 v_23;
+  half3 tmpvar_22 = 0;
+  tmpvar_22 = (((half)(8.0) * tmpvar_20.w) * tmpvar_20.xyz);
+  float3 v_23 = 0;
   v_23.x = tmpvar_21[0].x;
   v_23.y = tmpvar_21[1].x;
   v_23.z = tmpvar_21[2].x;
-  float3 v_24;
+  float3 v_24 = 0;
   v_24.x = tmpvar_21[0].y;
   v_24.y = tmpvar_21[1].y;
   v_24.z = tmpvar_21[2].y;
-  float3 v_25;
+  float3 v_25 = 0;
   v_25.x = tmpvar_21[0].z;
   v_25.y = tmpvar_21[1].z;
   v_25.z = tmpvar_21[2].z;
-  lightDir_1 = ((half3)((float3)normalize((
-    ((tmpvar_22.x * (half3)v_23) + (tmpvar_22.y * (half3)v_24))
+  lightDir_1 = ((half3)((float3)(normalize((
+    ((tmpvar_22.x * (half3)(v_23)) + (tmpvar_22.y * (half3)(v_24)))
    + 
-    (tmpvar_22.z * (half3)v_25)
-  )) * tmpvar_5));
-  half3 tmpvar_26;
+    (tmpvar_22.z * (half3)(v_25))
+  ))) * tmpvar_5));
+  half3 tmpvar_26 = 0;
   tmpvar_26 = normalize(lightDir_1);
   lightDir_1 = tmpvar_26;
-  half3 lightColor_27;
+  half3 lightColor_27 = 0;
   lightColor_27 = (_ShadowMapTexture.sample(_mtlsmp__ShadowMapTexture, ((float2)(_mtl_i.xlv_TEXCOORD5).xy / (float)(_mtl_i.xlv_TEXCOORD5).w)).x * ((
-    ((half)8.0 * tmpvar_19.w)
+    ((half)(8.0) * tmpvar_19.w)
    * tmpvar_19.xyz) * dot (
-    clamp (((half3)(tmpvar_21 * (float3)tmpvar_9)), (half)0.0, (half)1.0)
+    clamp (((half3)(tmpvar_21 * (float3)(tmpvar_9))), (half)0.0, (half)1.0)
   , tmpvar_22)));
-  float3 viewDir_28;
+  float3 viewDir_28 = 0;
   viewDir_28 = -(tmpvar_11);
-  half3 tmpvar_29;
-  tmpvar_29 = normalize(((half3)((float3)tmpvar_26 + viewDir_28)));
-  half tmpvar_30;
+  half3 tmpvar_29 = 0;
+  tmpvar_29 = normalize(((half3)((float3)(tmpvar_26) + viewDir_28)));
+  half tmpvar_30 = 0;
   tmpvar_30 = max ((half)0.0, dot (tmpvar_10, tmpvar_26));
-  half tmpvar_31;
+  half tmpvar_31 = 0;
   tmpvar_31 = max ((half)0.0, dot (tmpvar_10, tmpvar_29));
-  half tmpvar_32;
+  half tmpvar_32 = 0;
   tmpvar_32 = max ((half)0.0, ((half)dot ((float3)tmpvar_10, viewDir_28)));
-  half tmpvar_33;
+  half tmpvar_33 = 0;
   tmpvar_33 = max ((half)0.0, ((half)dot (viewDir_28, (float3)tmpvar_29)));
-  half VdotH_34;
-  VdotH_34 = (tmpvar_33 + (half)1e-05);
-  half tmpvar_35;
+  half VdotH_34 = 0;
+  VdotH_34 = (tmpvar_33 + (half)(1e-05));
+  half tmpvar_35 = 0;
   tmpvar_35 = (((half)1.0/((
     pow (tmpvar_14, (half)4.0)
-   + (half)1e-05))) - (half)2.0);
-  half tmpvar_36;
-  half tmpvar_37;
+   + (half)(1e-05)))) - (half)(2.0));
+  half tmpvar_36 = 0;
+  half tmpvar_37 = 0;
   tmpvar_37 = max ((half)0.0, dot (tmpvar_26, tmpvar_29));
-  tmpvar_36 = ((half)0.5 + (((half)2.0 * tmpvar_37) * (tmpvar_37 * tmpvar_14)));
-  half4 tmpvar_38;
+  tmpvar_36 = ((half)(0.5) + (((half)(2.0) * tmpvar_37) * (tmpvar_37 * tmpvar_14)));
+  half4 tmpvar_38 = 0;
   tmpvar_38.xyz = (((
-    (min ((((half3)(_mtl_u._Color.xyz * (float3)_MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).xyz)) * ((half)2.0 * _DetailAlbedoMap.sample(_mtlsmp__DetailAlbedoMap, (float2)(_mtl_i.xlv_TEXCOORD0.zw)).xyz)), ((half3)float3(1.0, 1.0, 1.0) - tmpvar_13)) * (((
-      ((half)1.0 + ((tmpvar_36 - (half)1.0) * pow (((half)1.00001 - tmpvar_30), (half)5.0)))
+    (min ((((half3)(_mtl_u._Color.xyz * (float3)(_MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).xyz))) * ((half)(2.0) * _DetailAlbedoMap.sample(_mtlsmp__DetailAlbedoMap, (float2)(_mtl_i.xlv_TEXCOORD0.zw)).xyz)), ((half3)(float3(1.0, 1.0, 1.0)) - tmpvar_13)) * (((
+      ((half)(1.0) + ((tmpvar_36 - (half)(1.0)) * pow (((half)(1.00001) - tmpvar_30), (half)5.0)))
      * 
-      ((half)1.0 + ((tmpvar_36 - (half)1.0) * pow (((half)1.00001 - tmpvar_32), (half)5.0)))
+      ((half)(1.0) + ((tmpvar_36 - (half)(1.0)) * pow (((half)(1.00001) - tmpvar_32), (half)5.0)))
     ) * tmpvar_30) * lightColor_27))
    + 
     (tmpvar_12.xyz * (env_2 + (lightColor_27 * max ((half)0.0, 
       ((((tmpvar_13 + 
-        (((half)1.0 - tmpvar_13) * pow (abs(((half)1.0 - tmpvar_33)), (half)5.0))
+        (((half)(1.0) - tmpvar_13) * pow (abs(((half)(1.0) - tmpvar_33)), (half)5.0))
       ) * min ((half)1.0, 
-        min (((((half)2.0 * tmpvar_31) * tmpvar_32) / VdotH_34), ((((half)2.0 * tmpvar_31) * tmpvar_30) / VdotH_34))
+        min (((((half)(2.0) * tmpvar_31) * tmpvar_32) / VdotH_34), ((((half)(2.0) * tmpvar_31) * tmpvar_30) / VdotH_34))
       )) * max ((half)0.0, (
         pow (tmpvar_31, tmpvar_35)
        * 
-        ((tmpvar_35 + (half)1.0) / (half)6.28318)
-      ))) / (((half)4.0 * tmpvar_32) + (half)1e-05))
+        ((tmpvar_35 + (half)(1.0)) / (half)(6.28318))
+      ))) / (((half)(4.0) * tmpvar_32) + (half)(1e-05)))
     ))))
   ) + (
-    ((((half)1.0 - dot (tmpvar_12.xyz, (half3)float3(0.299, 0.587, 0.114))) * ((half)1.0 - tmpvar_14)) * pow (abs(((half)1.0 - tmpvar_32)), (half)5.0))
-   * env_2)) + ((half3)((float3)_SelfIllum.sample(_mtlsmp__SelfIllum, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).xyz * _mtl_u._SelfIllumScale)));
-  tmpvar_38.w = ((half)((float)_AlphaMap.sample(_mtlsmp__AlphaMap, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).w * _mtl_u._Color.w));
-  half4 tmpvar_39;
+    ((((half)(1.0) - dot (tmpvar_12.xyz, (half3)float3(0.299, 0.587, 0.114))) * ((half)(1.0) - tmpvar_14)) * pow (abs(((half)(1.0) - tmpvar_32)), (half)5.0))
+   * env_2)) + ((half3)((float3)(_SelfIllum.sample(_mtlsmp__SelfIllum, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).xyz) * _mtl_u._SelfIllumScale)));
+  tmpvar_38.w = ((half)((float)(_AlphaMap.sample(_mtlsmp__AlphaMap, (float2)(_mtl_i.xlv_TEXCOORD0.xy)).w) * _mtl_u._Color.w));
+  half4 tmpvar_39 = 0;
   tmpvar_39 = tmpvar_38;
   _mtl_o._fragData = tmpvar_39;
   return _mtl_o;

3rdparty/glsl-optimizer/tests/fragment/z-unity-spot-outES3Metal.txt

@@ -20,44 +20,44 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _MainTex [[texture(2)]], sampler _mtlsmp__MainTex [[sampler(2)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  half atten_2;
-  half4 lightCoord_3;
-  float3 tmpvar_4;
+  half4 c_1 = 0;
+  half atten_2 = 0;
+  half4 lightCoord_3 = 0;
+  float3 tmpvar_4 = 0;
   tmpvar_4 = normalize((_mtl_u._WorldSpaceLightPos0.xyz - _mtl_i.xlv_TEXCOORD2));
-  half3 tmpvar_5;
-  half tmpvar_6;
-  half4 c_7;
-  half4 tmpvar_8;
+  half3 tmpvar_5 = 0;
+  half tmpvar_6 = 0;
+  half4 c_7 = 0;
+  half4 tmpvar_8 = 0;
   tmpvar_8 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0));
   c_7 = tmpvar_8;
   tmpvar_5 = c_7.xyz;
   tmpvar_6 = c_7.w;
-  float4 tmpvar_9;
+  float4 tmpvar_9 = 0;
   tmpvar_9.w = 1.0;
   tmpvar_9.xyz = _mtl_i.xlv_TEXCOORD2;
-  float4 tmpvar_10;
-  tmpvar_10 = ((float4)(_mtl_u._LightMatrix0 * (half4)tmpvar_9));
+  float4 tmpvar_10 = 0;
+  tmpvar_10 = ((float4)(_mtl_u._LightMatrix0 * (half4)(tmpvar_9)));
   lightCoord_3 = half4(tmpvar_10);
-  half4 tmpvar_11;
-  half2 P_12;
-  P_12 = ((lightCoord_3.xy / lightCoord_3.w) + (half)0.5);
+  half4 tmpvar_11 = 0;
+  half2 P_12 = 0;
+  P_12 = ((lightCoord_3.xy / lightCoord_3.w) + (half)(0.5));
   tmpvar_11 = _LightTexture0.sample(_mtlsmp__LightTexture0, (float2)(P_12));
-  half tmpvar_13;
+  half tmpvar_13 = 0;
   tmpvar_13 = dot (lightCoord_3.xyz, lightCoord_3.xyz);
-  half4 tmpvar_14;
+  half4 tmpvar_14 = 0;
   tmpvar_14 = _LightTextureB0.sample(_mtlsmp__LightTextureB0, (float2)(half2(tmpvar_13)));
-  half tmpvar_15;
+  half tmpvar_15 = 0;
   tmpvar_15 = ((half(
-    (lightCoord_3.z > (half)0.0)
+    (lightCoord_3.z > (half)(0.0))
   ) * tmpvar_11.w) * tmpvar_14.w);
   atten_2 = tmpvar_15;
-  half3 lightDir_16;
+  half3 lightDir_16 = 0;
   lightDir_16 = half3(tmpvar_4);
-  half4 c_17;
+  half4 c_17 = 0;
   c_17.xyz = ((tmpvar_5 * _mtl_u._LightColor0.xyz) * ((
     max ((half)0.0, dot (_mtl_i.xlv_TEXCOORD1, lightDir_16))
-   * atten_2) * (half)2.0));
+   * atten_2) * (half)(2.0)));
   c_17.w = tmpvar_6;
   c_1.xyz = c_17.xyz;
   c_1.w = half(0.0);

3rdparty/glsl-optimizer/tests/fragment/zun-MobileBumpSpec-outES3Metal.txt

@@ -19,23 +19,23 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _MainTex [[texture(1)]], sampler _mtlsmp__MainTex [[sampler(1)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 c_1;
-  half4 tmpvar_2;
+  half4 c_1 = 0;
+  half4 tmpvar_2 = 0;
   tmpvar_2 = _MainTex.sample(_mtlsmp__MainTex, (float2)(_mtl_i.xlv_TEXCOORD0));
-  half3 tmpvar_3;
-  tmpvar_3 = ((_BumpMap.sample(_mtlsmp__BumpMap, (float2)(_mtl_i.xlv_TEXCOORD0)).xyz * (half)2.0) - (half)1.0);
-  half3 halfDir_4;
+  half3 tmpvar_3 = 0;
+  tmpvar_3 = ((_BumpMap.sample(_mtlsmp__BumpMap, (float2)(_mtl_i.xlv_TEXCOORD0)).xyz * (half)(2.0)) - (half)(1.0));
+  half3 halfDir_4 = 0;
   halfDir_4 = _mtl_i.xlv_TEXCOORD1;
-  half4 c_5;
-  half spec_6;
-  half tmpvar_7;
+  half4 c_5 = 0;
+  half spec_6 = 0;
+  half tmpvar_7 = 0;
   tmpvar_7 = max ((half)0.0, dot (tmpvar_3, halfDir_4));
-  half tmpvar_8;
-  tmpvar_8 = pow (tmpvar_7, (_mtl_u._Shininess * (half)128.0));
+  half tmpvar_8 = 0;
+  tmpvar_8 = pow (tmpvar_7, (_mtl_u._Shininess * (half)(128.0)));
   spec_6 = (tmpvar_8 * tmpvar_2.w);
   c_5.xyz = (((
     (tmpvar_2.xyz * max ((half)0.0, dot (tmpvar_3, _mtl_i.xlv_TEXCOORD2)))
-   + spec_6) * _mtl_u._LightColor0.xyz) * (half)2.0);
+   + spec_6) * _mtl_u._LightColor0.xyz) * (half)(2.0));
   c_5.w = half(0.0);
   c_1.w = c_5.w;
   c_1.xyz = (c_5.xyz + (tmpvar_2.xyz * _mtl_i.xlv_TEXCOORD3));

3rdparty/glsl-optimizer/tests/fragment/zun-SSAO24-outES3Metal.txt

@@ -18,23 +18,23 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   ,   texture2d<half> _RandomTexture [[texture(1)]], sampler _mtlsmp__RandomTexture [[sampler(1)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half tmpvar_1;
-  float2 tmpvar_2;
+  half tmpvar_1 = 0;
+  float2 tmpvar_2 = 0;
   tmpvar_2 = _mtl_i.xlv_TEXCOORD0;
-  float occ_4;
-  float scale_5;
-  float depth_6;
-  float3 viewNorm_7;
-  half3 randN_8;
-  half3 tmpvar_9;
-  tmpvar_9 = ((_RandomTexture.sample(_mtlsmp__RandomTexture, (float2)(_mtl_i.xlv_TEXCOORD1)).xyz * (half)2.0) - (half)1.0);
+  float occ_4 = 0;
+  float scale_5 = 0;
+  float depth_6 = 0;
+  float3 viewNorm_7 = 0;
+  half3 randN_8 = 0;
+  half3 tmpvar_9 = 0;
+  tmpvar_9 = ((_RandomTexture.sample(_mtlsmp__RandomTexture, (float2)(_mtl_i.xlv_TEXCOORD1)).xyz * (half)(2.0)) - (half)(1.0));
   randN_8 = tmpvar_9;
-  float4 tmpvar_10;
+  float4 tmpvar_10 = 0;
   tmpvar_10 = _CameraDepthNormalsTexture.sample(_mtlsmp__CameraDepthNormalsTexture, (float2)(_mtl_i.xlv_TEXCOORD0));
-  float3 n_11;
-  float3 tmpvar_12;
+  float3 n_11 = 0;
+  float3 tmpvar_12 = 0;
   tmpvar_12 = ((tmpvar_10.xyz * float3(3.5554, 3.5554, 0.0)) + float3(-1.7777, -1.7777, 1.0));
-  float tmpvar_13;
+  float tmpvar_13 = 0;
   tmpvar_13 = (2.0 / dot (tmpvar_12, tmpvar_12));
   n_11.xy = (tmpvar_13 * tmpvar_12.xy);
   n_11.z = (tmpvar_13 - 1.0);
@@ -43,29 +43,29 @@ fragment xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]]
   scale_5 = (_mtl_u._Params.x / depth_6);
   occ_4 = 0.0;
   for (int s_3 = 0; s_3 < 8; s_3++) {
-    half3 randomDir_14;
-    float3 tmpvar_15;
-    float3 I_16;
+    half3 randomDir_14 = 0;
+    float3 tmpvar_15 = 0;
+    float3 I_16 = 0;
     I_16 = _xlat_mtl_const1[s_3];
-    tmpvar_15 = (I_16 - (float3)((half)2.0 * ((half3)(
+    tmpvar_15 = (I_16 - (float3)(((half)(2.0) * ((half3)(
       dot ((float3)randN_8, I_16)
-     * (float3)randN_8))));
+     * (float3)(randN_8))))));
     randomDir_14 = half3(tmpvar_15);
-    float tmpvar_17;
+    float tmpvar_17 = 0;
     tmpvar_17 = dot (viewNorm_7, (float3)randomDir_14);
-    half tmpvar_18;
+    half tmpvar_18 = 0;
     if ((tmpvar_17 < 0.0)) {
       tmpvar_18 = half(1.0);
     } else {
       tmpvar_18 = half(-1.0);
     };
     randomDir_14 = (randomDir_14 * -(tmpvar_18));
-    randomDir_14 = half3(((float3)randomDir_14 + (viewNorm_7 * 0.3)));
-    float tmpvar_19;
+    randomDir_14 = half3(((float3)(randomDir_14) + (viewNorm_7 * 0.3)));
+    float tmpvar_19 = 0;
     tmpvar_19 = clamp (((depth_6 - 
-      ((float)randomDir_14.z * _mtl_u._Params.x)
+      ((float)(randomDir_14.z) * _mtl_u._Params.x)
     ) - (
-      dot (_CameraDepthNormalsTexture.sample(_mtlsmp__CameraDepthNormalsTexture, (float2)((tmpvar_2 + ((float2)randomDir_14.xy * scale_5)))).zw, float2(1.0, 0.00392157))
+      dot (_CameraDepthNormalsTexture.sample(_mtlsmp__CameraDepthNormalsTexture, (float2)((tmpvar_2 + ((float2)(randomDir_14.xy) * scale_5)))).zw, float2(1.0, 0.00392157))
      * _mtl_u._ProjectionParams.z)), 0.0, 1.0);
     if ((tmpvar_19 > _mtl_u._Params.y)) {
       occ_4 = (occ_4 + pow ((1.0 - tmpvar_19), _mtl_u._Params.z));

3rdparty/glsl-optimizer/tests/vertex/MF-GodRays-outES3Metal.txt

@@ -35,46 +35,46 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float3 tmpvar_1;
-  float4 tmpvar_2;
+  float3 tmpvar_1 = 0;
+  float4 tmpvar_2 = 0;
   tmpvar_1 = float3(_mtl_i._inNormal);
   tmpvar_2 = float4(_mtl_i._color);
-  half4 tmpvar_3;
-  float noiseWave_4;
-  float noiseTime_5;
-  float wave_6;
-  float time_7;
-  float3 BBLocalPos_8;
-  float3 localDir_9;
-  float3 centerLocal_10;
-  float3 centerOffs_11;
-  float3 tmpvar_12;
+  half4 tmpvar_3 = 0;
+  float noiseWave_4 = 0;
+  float noiseTime_5 = 0;
+  float wave_6 = 0;
+  float time_7 = 0;
+  float3 BBLocalPos_8 = 0;
+  float3 localDir_9 = 0;
+  float3 centerLocal_10 = 0;
+  float3 centerOffs_11 = 0;
+  float3 tmpvar_12 = 0;
   tmpvar_12.z = 0.0;
   tmpvar_12.xy = (float2(0.5, 0.5) - tmpvar_2.xy);
   centerOffs_11 = (tmpvar_12 * _mtl_i._uv1.xyy);
   centerLocal_10 = (_mtl_i._inVertex.xyz + centerOffs_11);
-  float4 tmpvar_13;
+  float4 tmpvar_13 = 0;
   tmpvar_13.w = 1.0;
   tmpvar_13.xyz = _mtl_u._WorldSpaceCameraPos;
   localDir_9 = ((_mtl_u._World2Object * tmpvar_13).xyz - centerLocal_10);
   localDir_9.y = (localDir_9.y * _mtl_u._VerticalBillboarding);
-  float tmpvar_14;
+  float tmpvar_14 = 0;
   tmpvar_14 = sqrt(dot (localDir_9, localDir_9));
-  float3 dir_15;
+  float3 dir_15 = 0;
   dir_15 = (localDir_9 / tmpvar_14);
-  float tmpvar_16;
+  float tmpvar_16 = 0;
   tmpvar_16 = abs(dir_15.y);
-  float3 tmpvar_17;
+  float3 tmpvar_17 = 0;
   if ((tmpvar_16 > 0.999)) {
     tmpvar_17 = float3(0.0, 0.0, 1.0);
   } else {
     tmpvar_17 = float3(0.0, 1.0, 0.0);
   };
-  float3 tmpvar_18;
+  float3 tmpvar_18 = 0;
   tmpvar_18 = normalize(((tmpvar_17.yzx * dir_15.zxy) - (tmpvar_17.zxy * dir_15.yzx)));
-  float3 tmpvar_19;
+  float3 tmpvar_19 = 0;
   tmpvar_19 = ((dir_15.yzx * tmpvar_18.zxy) - (dir_15.zxy * tmpvar_18.yzx));
-  float tmpvar_20;
+  float tmpvar_20 = 0;
   tmpvar_20 = min ((max (
     (tmpvar_14 - _mtl_u._SizeGrowStartDist)
   , 0.0) / _mtl_u._SizeGrowEndDist), 1.0);
@@ -92,23 +92,23 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
     (_mtl_u._MaxGrowSize * tmpvar_2.w)
   )));
   time_7 = (_mtl_u._Time.y + (_mtl_u._BlinkingTimeOffsScale * tmpvar_2.z));
-  float y_21;
+  float y_21 = 0;
   y_21 = (_mtl_u._TimeOnDuration + _mtl_u._TimeOffDuration);
-  float tmpvar_22;
+  float tmpvar_22 = 0;
   tmpvar_22 = (time_7 / y_21);
-  float tmpvar_23;
+  float tmpvar_23 = 0;
   tmpvar_23 = (fract(abs(tmpvar_22)) * y_21);
-  float tmpvar_24;
+  float tmpvar_24 = 0;
   if ((tmpvar_22 >= 0.0)) {
     tmpvar_24 = tmpvar_23;
   } else {
     tmpvar_24 = -(tmpvar_23);
   };
-  float tmpvar_25;
+  float tmpvar_25 = 0;
   tmpvar_25 = clamp ((tmpvar_24 / (_mtl_u._TimeOnDuration * 0.25)), 0.0, 1.0);
-  float edge0_26;
+  float edge0_26 = 0;
   edge0_26 = (_mtl_u._TimeOnDuration * 0.75);
-  float tmpvar_27;
+  float tmpvar_27 = 0;
   tmpvar_27 = clamp (((tmpvar_24 - edge0_26) / (_mtl_u._TimeOnDuration - edge0_26)), 0.0, 1.0);
   wave_6 = ((tmpvar_25 * (tmpvar_25 * 
     (3.0 - (2.0 * tmpvar_25))
@@ -123,19 +123,19 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
       (noiseTime_5 * 0.6366)
      + 56.7272))) + 0.5)
   )) + (1.0 - _mtl_u._NoiseAmount));
-  float tmpvar_28;
+  float tmpvar_28 = 0;
   if ((_mtl_u._NoiseAmount < 0.01)) {
     tmpvar_28 = wave_6;
   } else {
     tmpvar_28 = noiseWave_4;
   };
   wave_6 = (tmpvar_28 + _mtl_u._Bias);
-  float4 tmpvar_29;
+  float4 tmpvar_29 = 0;
   tmpvar_29.w = 1.0;
   tmpvar_29.xyz = BBLocalPos_8;
-  float ffadeout_30;
-  float nfadeout_31;
-  float tmpvar_32;
+  float ffadeout_30 = 0;
+  float nfadeout_31 = 0;
+  float tmpvar_32 = 0;
   tmpvar_32 = clamp ((tmpvar_14 / _mtl_u._FadeOutDistNear), 0.0, 1.0);
   ffadeout_30 = (1.0 - clamp ((
     max ((tmpvar_14 - _mtl_u._FadeOutDistFar), 0.0)

3rdparty/glsl-optimizer/tests/vertex/bug-swizzle-lhs-cast-outES3Metal.txt

@@ -17,33 +17,33 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float3 viewDir_1;
-  float3 tmpvar_2;
-  float4 tmpvar_3;
+  float3 viewDir_1 = 0;
+  float3 tmpvar_2 = 0;
+  float4 tmpvar_3 = 0;
   tmpvar_3.w = 1.0;
   tmpvar_3.xyz = _mtl_u._WorldSpaceCameraPos;
   viewDir_1 = normalize(((_mtl_u._World2Object * tmpvar_3).xyz - _mtl_i._glesVertex.xyz));
-  half tmpvar_4;
-  float tmpvar_5;
+  half tmpvar_4 = 0;
+  float tmpvar_5 = 0;
   tmpvar_5 = clamp (dot (viewDir_1, -(_mtl_u._TerrainTreeLightDirections[0])), 0.0, 1.0);
   tmpvar_4 = half(tmpvar_5);
-  float3 tmpvar_6;
+  float3 tmpvar_6 = 0;
   tmpvar_6.yz = tmpvar_2.yz;
-  tmpvar_6.x = float((tmpvar_4 * (half)2.0));
-  half tmpvar_7;
-  float tmpvar_8;
+  tmpvar_6.x = float((tmpvar_4 * (half)(2.0)));
+  half tmpvar_7 = 0;
+  float tmpvar_8 = 0;
   tmpvar_8 = clamp (dot (viewDir_1, -(_mtl_u._TerrainTreeLightDirections[1])), 0.0, 1.0);
   tmpvar_7 = half(tmpvar_8);
-  float3 tmpvar_9;
+  float3 tmpvar_9 = 0;
   tmpvar_9.xz = tmpvar_6.xz;
-  tmpvar_9.y = float((tmpvar_7 * (half)2.0));
-  half tmpvar_10;
-  float tmpvar_11;
+  tmpvar_9.y = float((tmpvar_7 * (half)(2.0)));
+  half tmpvar_10 = 0;
+  float tmpvar_11 = 0;
   tmpvar_11 = clamp (dot (viewDir_1, -(_mtl_u._TerrainTreeLightDirections[2])), 0.0, 1.0);
   tmpvar_10 = half(tmpvar_11);
-  float3 tmpvar_12;
+  float3 tmpvar_12 = 0;
   tmpvar_12.xy = tmpvar_9.xy;
-  tmpvar_12.z = float((tmpvar_10 * (half)2.0));
+  tmpvar_12.z = float((tmpvar_10 * (half)(2.0)));
   tmpvar_2 = tmpvar_12;
   _mtl_o.gl_Position = (_mtl_u.glstate_matrix_mvp * _mtl_i._glesVertex);
   _mtl_o.xlv_TEXCOORD2 = tmpvar_12;

3rdparty/glsl-optimizer/tests/vertex/builtin-vars-outES3Metal.txt

@@ -16,12 +16,12 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
   , uint gl_VertexID [[vertex_id]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float3 p_1;
+  float3 p_1 = 0;
   p_1.z = _mtl_i._inPos.z;
   p_1.x = (_mtl_i._inPos.x + float(gl_VertexID));
   p_1.y = (_mtl_i._inPos.y + float(gl_InstanceID));
   p_1 = (p_1 + _mtl_i._inNor);
-  float4 tmpvar_2;
+  float4 tmpvar_2 = 0;
   tmpvar_2.w = 1.0;
   tmpvar_2.xyz = p_1;
   _mtl_o.gl_Position = tmpvar_2;

3rdparty/glsl-optimizer/tests/vertex/inputs-outES3Metal.txt

@@ -17,14 +17,14 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half2 tmpvar_1;
+  half2 tmpvar_1 = 0;
   tmpvar_1 = half2(_mtl_i._glesMultiTexCoord0.xy);
-  float4 tmpvar_2;
+  float4 tmpvar_2 = 0;
   tmpvar_2.xyz = normalize(_mtl_i._glesTANGENT.xyz);
   tmpvar_2.w = _mtl_i._glesTANGENT.w;
-  half4 tmpvar_3;
-  tmpvar_3.xy = (tmpvar_1 * (half)0.3);
-  tmpvar_3.xyz = half3(((float3)tmpvar_3.xyz + ((tmpvar_2.xyz * 0.5) + 0.5)));
+  half4 tmpvar_3 = 0;
+  tmpvar_3.xy = (tmpvar_1 * (half)(0.3));
+  tmpvar_3.xyz = half3(((float3)(tmpvar_3.xyz) + ((tmpvar_2.xyz * 0.5) + 0.5)));
   tmpvar_3.w = half(0.0);
   _mtl_o.gl_Position = (_mtl_u.glstate_matrix_mvp * _mtl_i._glesVertex);
   _mtl_o.xlv_TEXCOORD0 = tmpvar_1;

3rdparty/glsl-optimizer/tests/vertex/loops-for-withvec4-outES3Metal.txt

@@ -48,12 +48,12 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-float4 phase0_Output0_1;
-float4 Temp_0_2;
-float4 Temp_1_3;
-float4 Temp_2_4;
-float4 Temp_3_5;
-int4 Temp_int_0_6;
+float4 phase0_Output0_1 = 0;
+float4 Temp_0_2 = 0;
+float4 Temp_1_3 = 0;
+float4 Temp_2_4 = 0;
+float4 Temp_3_5 = 0;
+int4 Temp_int_0_6 = 0;
   Temp_0_2 = (_mtl_i.dcl_Input0_POSITION0.yyyy * _mtl_u.glstate_matrix_mvp[1]);
   Temp_0_2 = ((_mtl_u.glstate_matrix_mvp[0] * _mtl_i.dcl_Input0_POSITION0.xxxx) + Temp_0_2);
   Temp_0_2 = ((_mtl_u.glstate_matrix_mvp[2] * _mtl_i.dcl_Input0_POSITION0.zzzz) + Temp_0_2);

3rdparty/glsl-optimizer/tests/vertex/loops-for-withvec4inductorW-outES3Metal.txt

@@ -28,11 +28,11 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-float4 phase0_Output2_1;
-float4 Temp_2_2;
-float4 Temp_3_3;
-int4 Temp_int_0_4;
-int4 Temp_int_1_5;
+float4 phase0_Output2_1 = 0;
+float4 Temp_2_2 = 0;
+float4 Temp_3_3 = 0;
+int4 Temp_int_0_4 = 0;
+int4 Temp_int_1_5 = 0;
   Temp_int_0_4 = as_type<int4>((_mtl_i.in_POSITION0.yyyy * _mtl_u.glstate_matrix_mvp[1]));
   Temp_int_0_4 = as_type<int4>(((_mtl_u.glstate_matrix_mvp[0] * _mtl_i.in_POSITION0.xxxx) + as_type<float4>(Temp_int_0_4)));
   Temp_int_0_4 = as_type<int4>(((_mtl_u.glstate_matrix_mvp[2] * _mtl_i.in_POSITION0.zzzz) + as_type<float4>(Temp_int_0_4)));

3rdparty/glsl-optimizer/tests/vertex/loops-forlimitbreak-outES3Metal.txt

@@ -17,38 +17,38 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float3 tmpvar_1;
+  float3 tmpvar_1 = 0;
   tmpvar_1 = _mtl_i._glesVertex.xyz;
-  int j_2;
-  int j_3;
-  int il_4;
-  half3 lcolor_5;
-  half3 eyeNormal_6;
-  half4 color_7;
-  half4 tmpvar_8;
+  int j_2 = 0;
+  int j_3 = 0;
+  int il_4 = 0;
+  half3 lcolor_5 = 0;
+  half3 eyeNormal_6 = 0;
+  half4 color_7 = 0;
+  half4 tmpvar_8 = 0;
   color_7 = half4(float4(0.0, 0.0, 0.0, 1.1));
   eyeNormal_6 = half3(_mtl_i._glesNormal);
   lcolor_5 = half3(float3(0.0, 0.0, 0.0));
   il_4 = 0;
   while (true) {
-    float tmpvar_9;
+    float tmpvar_9 = 0;
     tmpvar_9 = min (8.0, float(_mtl_u.unity_VertexLightParams.x));
     if ((float(il_4) >= tmpvar_9)) {
       break;
     };
-    float3 tmpvar_10;
+    float3 tmpvar_10 = 0;
     tmpvar_10 = _mtl_u.unity_LightPosition[il_4].xyz;
-    half3 dirToLight_11;
+    half3 dirToLight_11 = 0;
     dirToLight_11 = half3(tmpvar_10);
     lcolor_5 = (lcolor_5 + min ((
       (max (dot (eyeNormal_6, dirToLight_11), (half)0.0) * _mtl_u.unity_LightColor[il_4].xyz)
-     * (half)0.5), (half3)float3(1.0, 1.0, 1.0)));
+     * (half)(0.5)), (half3)float3(1.0, 1.0, 1.0)));
     il_4++;
   };
   color_7.xyz = lcolor_5;
   j_3 = 0;
   while (true) {
-    float tmpvar_12;
+    float tmpvar_12 = 0;
     tmpvar_12 = min (float(_mtl_u.unity_VertexLightParams.y), 4.0);
     if ((j_3 >= int(tmpvar_12))) {
       break;
@@ -58,7 +58,7 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
   };
   j_2 = 0;
   while (true) {
-    int tmpvar_13;
+    int tmpvar_13 = 0;
     tmpvar_13 = min (_mtl_u.unity_VertexLightParams.y, 4);
     if ((j_2 >= tmpvar_13)) {
       break;
@@ -67,7 +67,7 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
     j_2++;
   };
   tmpvar_8 = color_7;
-  float4 tmpvar_14;
+  float4 tmpvar_14 = 0;
   tmpvar_14.w = 1.0;
   tmpvar_14.xyz = tmpvar_1;
   _mtl_o.xlv_COLOR0 = tmpvar_8;

3rdparty/glsl-optimizer/tests/vertex/loops-forvarious-outES3Metal.txt

@@ -16,31 +16,31 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float4 l_1_1;
-  float4 l_2;
-  half4 tmpvar_3;
-  half4 tmpvar_4;
+  float4 l_1_1 = 0;
+  float4 l_2 = 0;
+  half4 tmpvar_3 = 0;
+  half4 tmpvar_4 = 0;
   tmpvar_3 = half4((_mtl_u.UNITY_MATRIX_MVP * _mtl_i._inVertex));
   tmpvar_4 = half4(_mtl_u.unity_LightColor[0]);
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[1]));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[0]));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[1]));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[2]));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[3]));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[3]));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[2]));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[1]));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[0]));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[1]));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[0]));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[1]));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[2]));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[3]));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[3]));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[2]));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[1]));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[0]));
   l_2 = (_mtl_u.unity_LightColor[0] * _mtl_u.unity_LightAtten[0].x);
-  tmpvar_4 = half4(((float4)tmpvar_4 + l_2));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + l_2));
   l_2 = (_mtl_u.unity_LightColor[1] * _mtl_u.unity_LightAtten[1].x);
-  tmpvar_4 = half4(((float4)tmpvar_4 + l_2));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + l_2));
   l_1_1 = (_mtl_u.unity_LightColor[0] * _mtl_u.unity_LightAtten[0].z);
-  tmpvar_4 = half4(((float4)tmpvar_4 + l_1_1));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + l_1_1));
   l_1_1 = (_mtl_u.unity_LightColor[1] * _mtl_u.unity_LightAtten[1].z);
-  tmpvar_4 = half4(((float4)tmpvar_4 + l_1_1));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[1].x));
-  tmpvar_4 = half4(((float4)tmpvar_4 + _mtl_u.unity_LightColor[2].x));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + l_1_1));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[1].x));
+  tmpvar_4 = half4(((float4)(tmpvar_4) + _mtl_u.unity_LightColor[2].x));
   _mtl_o.gl_Position = float4(tmpvar_3);
   _mtl_o.xlv_TEXCOORD0 = tmpvar_4;
   return _mtl_o;

3rdparty/glsl-optimizer/tests/vertex/matrix-casts-outES3Metal.txt

@@ -27,13 +27,13 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
   float4x4 htof4_3;
   half2x2 ftoh2_4;
   half4x4 ftoh4_5;
-  float4 r_6;
+  float4 r_6 = 0;
   r_6.yzw = float3(0.0, 0.0, 0.0);
   ftoh4_5 = _xlcast_half4x4(_mtl_u.uniMat4F);
   r_6.x = float(ftoh4_5[0].x);
-  r_6.x = (r_6.x + (float)ftoh4_5[0].x);
+  r_6.x = (r_6.x + (float)(ftoh4_5[0].x));
   ftoh2_4 = _xlcast_half2x2(_mtl_u.uniMat2F);
-  r_6.x = (r_6.x + (float)ftoh2_4[0].x);
+  r_6.x = (r_6.x + (float)(ftoh2_4[0].x));
   htof4_3 = _xlcast_float4x4(_mtl_u.uniMat4H);
   r_6.x = (r_6.x + htof4_3[0].x);
   htof3_2 = _xlcast_float3x3(_mtl_u.uniMat3H);

3rdparty/glsl-optimizer/tests/vertex/opt-matrix-transpose-mul-outES3Metal.txt

@@ -23,21 +23,21 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half3 lightDir_1;
-  float3 worldN_2;
-  half3 tmpvar_3;
-  half3 tmpvar_4;
-  half3 tmpvar_5;
+  half3 lightDir_1 = 0;
+  float3 worldN_2 = 0;
+  half3 tmpvar_3 = 0;
+  half3 tmpvar_4 = 0;
+  half3 tmpvar_5 = 0;
   float3x3 tmpvar_6;
   tmpvar_6[0] = _mtl_u._Object2World[0].xyz;
   tmpvar_6[1] = _mtl_u._Object2World[1].xyz;
   tmpvar_6[2] = _mtl_u._Object2World[2].xyz;
-  half3 tmpvar_7;
-  tmpvar_7 = ((half3)(tmpvar_6 * (float3)_mtl_i.attrNormal));
+  half3 tmpvar_7 = 0;
+  tmpvar_7 = ((half3)(tmpvar_6 * (float3)(_mtl_i.attrNormal)));
   worldN_2 = float3(tmpvar_7);
   tmpvar_5 = half3(worldN_2);
-  half3 tmpvar_8;
-  half3 tmpvar_9;
+  half3 tmpvar_8 = 0;
+  half3 tmpvar_9 = 0;
   tmpvar_8 = _mtl_i.attrTangent.xyz;
   tmpvar_9 = (((_mtl_i.attrNormal.yzx * _mtl_i.attrTangent.zxy) - (_mtl_i.attrNormal.zxy * _mtl_i.attrTangent.yzx)) * _mtl_i.attrTangent.w);
   half3x3 tmpvar_10;
@@ -50,16 +50,16 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
   tmpvar_10[2].x = tmpvar_8.z;
   tmpvar_10[2].y = tmpvar_9.z;
   tmpvar_10[2].z = _mtl_i.attrNormal.z;
-  float3 tmpvar_11;
-  tmpvar_11 = ((float3)(tmpvar_10 * (half3)(_mtl_u._World2Object * (float4)_mtl_u._WorldSpaceLightPos0).xyz));
+  float3 tmpvar_11 = 0;
+  tmpvar_11 = ((float3)(tmpvar_10 * (half3)((_mtl_u._World2Object * (float4)(_mtl_u._WorldSpaceLightPos0)).xyz)));
   lightDir_1 = half3(tmpvar_11);
   tmpvar_3 = lightDir_1;
-  float4 tmpvar_12;
+  float4 tmpvar_12 = 0;
   tmpvar_12.w = 1.0;
   tmpvar_12.xyz = _mtl_u._WorldSpaceCameraPos;
-  float3 tmpvar_13;
-  tmpvar_13 = normalize(((float3)lightDir_1 + normalize(
-    ((float3)(tmpvar_10 * (half3)(((_mtl_u._World2Object * tmpvar_12).xyz * _mtl_u.unity_Scale.w) - _mtl_i.attrVertex.xyz)))
+  float3 tmpvar_13 = 0;
+  tmpvar_13 = normalize(((float3)(lightDir_1) + normalize(
+    ((float3)(tmpvar_10 * (half3)((((_mtl_u._World2Object * tmpvar_12).xyz * _mtl_u.unity_Scale.w) - _mtl_i.attrVertex.xyz))))
   )));
   tmpvar_4 = half3(tmpvar_13);
   _mtl_o.gl_Position = (_mtl_u.glstate_matrix_mvp * _mtl_i.attrVertex);

3rdparty/glsl-optimizer/tests/vertex/swizzle-casts-outES3Metal.txt

@@ -16,9 +16,9 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half4 tmpvar_1;
+  half4 tmpvar_1 = 0;
   tmpvar_1 = half4(_mtl_i._glesMultiTexCoord0);
-  float4 tmpvar_2;
+  float4 tmpvar_2 = 0;
   tmpvar_2 = (_mtl_u.glstate_matrix_mvp * _mtl_i._glesVertex);
   tmpvar_2.z = (tmpvar_2.z + clamp ((_mtl_u.unity_LightShadowBias.x / tmpvar_2.w), 0.0, 1.0));
   tmpvar_2.z = mix (tmpvar_2.z, max (tmpvar_2.z, -(tmpvar_2.w)), _mtl_u.unity_LightShadowBias.y);

3rdparty/glsl-optimizer/tests/vertex/types-outES3Metal.txt

@@ -18,8 +18,8 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half2 tmpvar_1;
-  half4 tmpvar_2;
+  half2 tmpvar_1 = 0;
+  half4 tmpvar_2 = 0;
   tmpvar_2.w = _mtl_i._color.w;
   tmpvar_2.xyz = (_mtl_i._color.xyz + _mtl_i._inNormal);
   tmpvar_1 = half2(_mtl_i._uv0);

3rdparty/glsl-optimizer/tests/vertex/uniforms-arrays-outES3Metal.txt

@@ -24,18 +24,18 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float3 tmpvar_1;
+  float3 tmpvar_1 = 0;
   tmpvar_1 = _mtl_i._glesVertex.xyz;
-  float3 n_2;
+  float3 n_2 = 0;
   n_2 = float3(_mtl_i._glesNormal);
-  half4 tmpvar_3;
-  float4 tmpvar_4;
+  half4 tmpvar_3 = 0;
+  float4 tmpvar_4 = 0;
   tmpvar_4.w = 1.0;
   tmpvar_4.xyz = tmpvar_1;
-  float3 lightColor_5;
-  float3 viewN_6;
-  float3 viewpos_7;
-  float4 tmpvar_8;
+  float3 lightColor_5 = 0;
+  float3 viewN_6 = 0;
+  float3 viewpos_7 = 0;
+  float4 tmpvar_8 = 0;
   tmpvar_8.w = 1.0;
   tmpvar_8.xyz = tmpvar_1;
   viewpos_7 = (_mtl_u.glstate_matrix_modelview0 * tmpvar_8).xyz;
@@ -44,37 +44,37 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
   tmpvar_9[1] = _mtl_u.glstate_matrix_invtrans_modelview0[1].xyz;
   tmpvar_9[2] = _mtl_u.glstate_matrix_invtrans_modelview0[2].xyz;
   viewN_6 = (tmpvar_9 * n_2);
-  float3 tmpvar_10;
+  float3 tmpvar_10 = 0;
   tmpvar_10 = (_mtl_u.unity_LightPosition[0].xyz - (viewpos_7 * _mtl_u.unity_LightPosition[0].w));
-  lightColor_5 = (_mtl_u.glstate_lightmodel_ambient.xyz + ((float3)_mtl_u.unity_LightColor[0].xyz * (
+  lightColor_5 = (_mtl_u.glstate_lightmodel_ambient.xyz + ((float3)(_mtl_u.unity_LightColor[0].xyz) * (
     max (0.0, dot (viewN_6, normalize(tmpvar_10)))
    * 
-    (1.0/((1.0 + (dot (tmpvar_10, tmpvar_10) * (float)_mtl_u.unity_LightAtten[0].z))))
+    (1.0/((1.0 + (dot (tmpvar_10, tmpvar_10) * (float)(_mtl_u.unity_LightAtten[0].z)))))
   )));
-  float3 tmpvar_11;
+  float3 tmpvar_11 = 0;
   tmpvar_11 = (_mtl_u.unity_LightPosition[1].xyz - (viewpos_7 * _mtl_u.unity_LightPosition[1].w));
-  lightColor_5 = (lightColor_5 + ((float3)_mtl_u.unity_LightColor[1].xyz * (
+  lightColor_5 = (lightColor_5 + ((float3)(_mtl_u.unity_LightColor[1].xyz) * (
     max (0.0, dot (viewN_6, normalize(tmpvar_11)))
    * 
-    (1.0/((1.0 + (dot (tmpvar_11, tmpvar_11) * (float)_mtl_u.unity_LightAtten[1].z))))
+    (1.0/((1.0 + (dot (tmpvar_11, tmpvar_11) * (float)(_mtl_u.unity_LightAtten[1].z)))))
   )));
-  float3 tmpvar_12;
+  float3 tmpvar_12 = 0;
   tmpvar_12 = (_mtl_u.unity_LightPosition[2].xyz - (viewpos_7 * _mtl_u.unity_LightPosition[2].w));
-  lightColor_5 = (lightColor_5 + ((float3)_mtl_u.unity_LightColor[2].xyz * (
+  lightColor_5 = (lightColor_5 + ((float3)(_mtl_u.unity_LightColor[2].xyz) * (
     max (0.0, dot (viewN_6, normalize(tmpvar_12)))
    * 
-    (1.0/((1.0 + (dot (tmpvar_12, tmpvar_12) * (float)_mtl_u.unity_LightAtten[2].z))))
+    (1.0/((1.0 + (dot (tmpvar_12, tmpvar_12) * (float)(_mtl_u.unity_LightAtten[2].z)))))
   )));
-  float3 tmpvar_13;
+  float3 tmpvar_13 = 0;
   tmpvar_13 = (_mtl_u.unity_LightPosition[3].xyz - (viewpos_7 * _mtl_u.unity_LightPosition[3].w));
-  lightColor_5 = (lightColor_5 + ((float3)_mtl_u.unity_LightColor[3].xyz * (
+  lightColor_5 = (lightColor_5 + ((float3)(_mtl_u.unity_LightColor[3].xyz) * (
     max (0.0, dot (viewN_6, normalize(tmpvar_13)))
    * 
-    (1.0/((1.0 + (dot (tmpvar_13, tmpvar_13) * (float)_mtl_u.unity_LightAtten[3].z))))
+    (1.0/((1.0 + (dot (tmpvar_13, tmpvar_13) * (float)(_mtl_u.unity_LightAtten[3].z)))))
   )));
-  float4 tmpvar_14;
+  float4 tmpvar_14 = 0;
   tmpvar_14.w = 1.0;
-  tmpvar_14.xyz = ((lightColor_5 * (float3)_mtl_u._Color.xyz) * 2.0);
+  tmpvar_14.xyz = ((lightColor_5 * (float3)(_mtl_u._Color.xyz)) * 2.0);
   tmpvar_3 = half4(tmpvar_14);
   _mtl_o.gl_Position = (_mtl_u.glstate_matrix_mvp * tmpvar_4);
   _mtl_o.xlv_COLOR0 = tmpvar_3;

3rdparty/glsl-optimizer/tests/vertex/z-NichsHybridLightVectorInsertBug-outES3Metal.txt

@@ -17,140 +17,140 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
   ,   texture2d<half> _DynLampInfo [[texture(0)]], sampler _mtlsmp__DynLampInfo [[sampler(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  half3 tmpvar_1;
-  float3 tmpvar_2;
+  half3 tmpvar_1 = 0;
+  float3 tmpvar_2 = 0;
   tmpvar_2 = (_mtl_u._Object2World * _mtl_i._glesVertex).xyz;
-  float3 tmpvar_3;
-  half3 hybridCol_4;
-  int4 tmpvar_5;
+  float3 tmpvar_3 = 0;
+  half3 hybridCol_4 = 0;
+  int4 tmpvar_5 = 0;
   tmpvar_5.xyz = int3(tmpvar_2);
   tmpvar_5.w = int(-(tmpvar_2.x));
-  float2 tmpvar_6;
+  float2 tmpvar_6 = 0;
   tmpvar_6.y = 1.0;
   tmpvar_6.x = float(tmpvar_5.x);
-  half2 coord_7;
+  half2 coord_7 = 0;
   coord_7 = half2(tmpvar_6);
-  half4 tmpvar_8;
+  half4 tmpvar_8 = 0;
   tmpvar_8.zw = half2(float2(0.0, 0.0));
   tmpvar_8.xy = (coord_7 / _mtl_u._DynLampInfo_bufferSize);
-  half4 tmpvar_9;
-  half4 tmpvar_10;
+  half4 tmpvar_9 = 0;
+  half4 tmpvar_10 = 0;
   tmpvar_10 = _DynLampInfo.sample(_mtlsmp__DynLampInfo, (float2)(tmpvar_8.xy), level(0.0));
   tmpvar_9 = tmpvar_10;
-  float2 tmpvar_11;
+  float2 tmpvar_11 = 0;
   tmpvar_11.y = 2.0;
   tmpvar_11.x = float(tmpvar_5.x);
-  half2 coord_12;
+  half2 coord_12 = 0;
   coord_12 = half2(tmpvar_11);
-  half4 tmpvar_13;
+  half4 tmpvar_13 = 0;
   tmpvar_13.zw = half2(float2(0.0, 0.0));
   tmpvar_13.xy = (coord_12 / _mtl_u._DynLampInfo_bufferSize);
-  half4 tmpvar_14;
-  half4 tmpvar_15;
+  half4 tmpvar_14 = 0;
+  half4 tmpvar_15 = 0;
   tmpvar_15 = _DynLampInfo.sample(_mtlsmp__DynLampInfo, (float2)(tmpvar_13.xy), level(0.0));
   tmpvar_14 = tmpvar_15;
-  float2 tmpvar_16;
+  float2 tmpvar_16 = 0;
   tmpvar_16.y = 1.0;
   tmpvar_16.x = float(tmpvar_5.y);
-  half2 coord_17;
+  half2 coord_17 = 0;
   coord_17 = half2(tmpvar_16);
-  half4 tmpvar_18;
+  half4 tmpvar_18 = 0;
   tmpvar_18.zw = half2(float2(0.0, 0.0));
   tmpvar_18.xy = (coord_17 / _mtl_u._DynLampInfo_bufferSize);
-  half4 tmpvar_19;
-  half4 tmpvar_20;
+  half4 tmpvar_19 = 0;
+  half4 tmpvar_20 = 0;
   tmpvar_20 = _DynLampInfo.sample(_mtlsmp__DynLampInfo, (float2)(tmpvar_18.xy), level(0.0));
   tmpvar_19 = tmpvar_20;
-  float2 tmpvar_21;
+  float2 tmpvar_21 = 0;
   tmpvar_21.y = 2.0;
   tmpvar_21.x = float(tmpvar_5.y);
-  half2 coord_22;
+  half2 coord_22 = 0;
   coord_22 = half2(tmpvar_21);
-  half4 tmpvar_23;
+  half4 tmpvar_23 = 0;
   tmpvar_23.zw = half2(float2(0.0, 0.0));
   tmpvar_23.xy = (coord_22 / _mtl_u._DynLampInfo_bufferSize);
-  half4 tmpvar_24;
-  half4 tmpvar_25;
+  half4 tmpvar_24 = 0;
+  half4 tmpvar_25 = 0;
   tmpvar_25 = _DynLampInfo.sample(_mtlsmp__DynLampInfo, (float2)(tmpvar_23.xy), level(0.0));
   tmpvar_24 = tmpvar_25;
-  float2 tmpvar_26;
+  float2 tmpvar_26 = 0;
   tmpvar_26.y = 1.0;
   tmpvar_26.x = float(tmpvar_5.z);
-  half2 coord_27;
+  half2 coord_27 = 0;
   coord_27 = half2(tmpvar_26);
-  half4 tmpvar_28;
+  half4 tmpvar_28 = 0;
   tmpvar_28.zw = half2(float2(0.0, 0.0));
   tmpvar_28.xy = (coord_27 / _mtl_u._DynLampInfo_bufferSize);
-  half4 tmpvar_29;
-  half4 tmpvar_30;
+  half4 tmpvar_29 = 0;
+  half4 tmpvar_30 = 0;
   tmpvar_30 = _DynLampInfo.sample(_mtlsmp__DynLampInfo, (float2)(tmpvar_28.xy), level(0.0));
   tmpvar_29 = tmpvar_30;
-  float2 tmpvar_31;
+  float2 tmpvar_31 = 0;
   tmpvar_31.y = 2.0;
   tmpvar_31.x = float(tmpvar_5.z);
-  half2 coord_32;
+  half2 coord_32 = 0;
   coord_32 = half2(tmpvar_31);
-  half4 tmpvar_33;
+  half4 tmpvar_33 = 0;
   tmpvar_33.zw = half2(float2(0.0, 0.0));
   tmpvar_33.xy = (coord_32 / _mtl_u._DynLampInfo_bufferSize);
-  half4 tmpvar_34;
-  half4 tmpvar_35;
+  half4 tmpvar_34 = 0;
+  half4 tmpvar_35 = 0;
   tmpvar_35 = _DynLampInfo.sample(_mtlsmp__DynLampInfo, (float2)(tmpvar_33.xy), level(0.0));
   tmpvar_34 = tmpvar_35;
-  float2 tmpvar_36;
+  float2 tmpvar_36 = 0;
   tmpvar_36.y = 1.0;
   tmpvar_36.x = float(tmpvar_5.w);
-  half2 coord_37;
+  half2 coord_37 = 0;
   coord_37 = half2(tmpvar_36);
-  half4 tmpvar_38;
+  half4 tmpvar_38 = 0;
   tmpvar_38.zw = half2(float2(0.0, 0.0));
   tmpvar_38.xy = (coord_37 / _mtl_u._DynLampInfo_bufferSize);
-  half4 tmpvar_39;
-  half4 tmpvar_40;
+  half4 tmpvar_39 = 0;
+  half4 tmpvar_40 = 0;
   tmpvar_40 = _DynLampInfo.sample(_mtlsmp__DynLampInfo, (float2)(tmpvar_38.xy), level(0.0));
   tmpvar_39 = tmpvar_40;
-  float2 tmpvar_41;
+  float2 tmpvar_41 = 0;
   tmpvar_41.y = 2.0;
   tmpvar_41.x = float(tmpvar_5.w);
-  half2 coord_42;
+  half2 coord_42 = 0;
   coord_42 = half2(tmpvar_41);
-  half4 tmpvar_43;
+  half4 tmpvar_43 = 0;
   tmpvar_43.zw = half2(float2(0.0, 0.0));
   tmpvar_43.xy = (coord_42 / _mtl_u._DynLampInfo_bufferSize);
-  half4 tmpvar_44;
-  half4 tmpvar_45;
+  half4 tmpvar_44 = 0;
+  half4 tmpvar_45 = 0;
   tmpvar_45 = _DynLampInfo.sample(_mtlsmp__DynLampInfo, (float2)(tmpvar_43.xy), level(0.0));
   tmpvar_44 = tmpvar_45;
-  half3 hybridCol_46;
-  half4 atten_47;
-  float3 tmpvar_48;
-  tmpvar_48 = ((float3)tmpvar_9.xyz - tmpvar_2);
-  float tmpvar_49;
+  half3 hybridCol_46 = 0;
+  half4 atten_47 = 0;
+  float3 tmpvar_48 = 0;
+  tmpvar_48 = ((float3)(tmpvar_9.xyz) - tmpvar_2);
+  float tmpvar_49 = 0;
   tmpvar_49 = dot (tmpvar_48, tmpvar_48);
-  half4 tmpvar_50;
+  half4 tmpvar_50 = 0;
   tmpvar_50.yzw = atten_47.yzw;
-  tmpvar_50.x = half((tmpvar_49 * (float)tmpvar_9.w));
-  float3 tmpvar_51;
-  tmpvar_51 = ((float3)tmpvar_19.xyz - tmpvar_2);
-  float tmpvar_52;
+  tmpvar_50.x = half((tmpvar_49 * (float)(tmpvar_9.w)));
+  float3 tmpvar_51 = 0;
+  tmpvar_51 = ((float3)(tmpvar_19.xyz) - tmpvar_2);
+  float tmpvar_52 = 0;
   tmpvar_52 = dot (tmpvar_51, tmpvar_51);
-  half4 tmpvar_53;
+  half4 tmpvar_53 = 0;
   tmpvar_53.xzw = tmpvar_50.xzw;
-  tmpvar_53.y = half((tmpvar_52 * (float)tmpvar_19.w));
-  float3 tmpvar_54;
-  tmpvar_54 = ((float3)tmpvar_29.xyz - tmpvar_2);
-  float tmpvar_55;
+  tmpvar_53.y = half((tmpvar_52 * (float)(tmpvar_19.w)));
+  float3 tmpvar_54 = 0;
+  tmpvar_54 = ((float3)(tmpvar_29.xyz) - tmpvar_2);
+  float tmpvar_55 = 0;
   tmpvar_55 = dot (tmpvar_54, tmpvar_54);
-  half4 tmpvar_56;
+  half4 tmpvar_56 = 0;
   tmpvar_56.xyw = tmpvar_53.xyw;
-  tmpvar_56.z = half((tmpvar_55 * (float)tmpvar_29.w));
-  float3 tmpvar_57;
-  tmpvar_57 = ((float3)tmpvar_39.xyz - tmpvar_2);
-  float tmpvar_58;
+  tmpvar_56.z = half((tmpvar_55 * (float)(tmpvar_29.w)));
+  float3 tmpvar_57 = 0;
+  tmpvar_57 = ((float3)(tmpvar_39.xyz) - tmpvar_2);
+  float tmpvar_58 = 0;
   tmpvar_58 = dot (tmpvar_57, tmpvar_57);
-  half4 tmpvar_59;
+  half4 tmpvar_59 = 0;
   tmpvar_59.xyz = tmpvar_56.xyz;
-  tmpvar_59.w = half((tmpvar_58 * (float)tmpvar_39.w));
+  tmpvar_59.w = half((tmpvar_58 * (float)(tmpvar_39.w)));
   atten_47 = tmpvar_59;
   hybridCol_46 = (hybridCol_4 + (tmpvar_14.xyz * tmpvar_50.x));
   hybridCol_46 = (hybridCol_46 + (tmpvar_24.xyz * tmpvar_53.y));

3rdparty/glsl-optimizer/tests/vertex/z-prepasslight-outES3Metal.txt

@@ -18,18 +18,18 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float4 tmpvar_1;
-  float3 tmpvar_2;
+  float4 tmpvar_1 = 0;
+  float3 tmpvar_2 = 0;
   tmpvar_1 = (_mtl_u.glstate_matrix_mvp * _mtl_i._vertex);
-  float4 o_3;
+  float4 o_3 = 0;
   o_3 = (tmpvar_1 * 0.5);
-  float2 tmpvar_4;
+  float2 tmpvar_4 = 0;
   tmpvar_4.x = o_3.x;
   tmpvar_4.y = (o_3.y * _mtl_u._ProjectionParams.x);
   o_3.xy = (tmpvar_4 + o_3.w);
   o_3.zw = tmpvar_1.zw;
   tmpvar_2 = ((_mtl_u.glstate_matrix_modelview0 * _mtl_i._vertex).xyz * float3(-1.0, -1.0, 1.0));
-  float3 tmpvar_5;
+  float3 tmpvar_5 = 0;
   tmpvar_5 = mix (tmpvar_2, _mtl_i._normal, float3(float((_mtl_i._normal.z != 0.0))));
   tmpvar_2 = tmpvar_5;
   _mtl_o.gl_Position = tmpvar_1;

3rdparty/glsl-optimizer/tests/vertex/z-treeleaf-outES3Metal.txt

@@ -36,56 +36,56 @@ struct xlatMtlShaderUniform {
 vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]], constant xlatMtlShaderUniform& _mtl_u [[buffer(0)]])
 {
   xlatMtlShaderOutput _mtl_o;
-  float4 tmpvar_1;
-  float3 tmpvar_2;
-  float4 tmpvar_3;
+  float4 tmpvar_1 = 0;
+  float3 tmpvar_2 = 0;
+  float4 tmpvar_3 = 0;
   tmpvar_1 = float4(_mtl_i.TANGENT);
   tmpvar_2 = float3(_mtl_i._inNormal);
   tmpvar_3 = float4(_mtl_i._color);
-  float3 binormal_4;
-  float4 tmpvar_5;
-  float4 tmpvar_6;
-  float4 pos_7;
-  float isBillboard_8;
+  float3 binormal_4 = 0;
+  float4 tmpvar_5 = 0;
+  float4 tmpvar_6 = 0;
+  float4 pos_7 = 0;
+  float isBillboard_8 = 0;
   isBillboard_8 = (1.0 - abs(tmpvar_1.w));
-  float4 tmpvar_9;
+  float4 tmpvar_9 = 0;
   tmpvar_9.w = 0.0;
   tmpvar_9.xyz = tmpvar_2;
-  float4 tmpvar_10;
+  float4 tmpvar_10 = 0;
   tmpvar_10.w = 0.0;
   tmpvar_10.xyz = tmpvar_1.xyz;
-  float4 tmpvar_11;
+  float4 tmpvar_11 = 0;
   tmpvar_11.zw = float2(0.0, 0.0);
   tmpvar_11.xy = tmpvar_2.xy;
   pos_7 = (_mtl_i._inVertex + ((tmpvar_11 * _mtl_u.glstate_matrix_invtrans_modelview0) * isBillboard_8));
-  float3 tmpvar_12;
+  float3 tmpvar_12 = 0;
   tmpvar_12 = mix (tmpvar_2, normalize((tmpvar_9 * _mtl_u.glstate_matrix_invtrans_modelview0)).xyz, float3(isBillboard_8));
-  float4 tmpvar_13;
+  float4 tmpvar_13 = 0;
   tmpvar_13.w = -1.0;
   tmpvar_13.xyz = normalize((tmpvar_10 * _mtl_u.glstate_matrix_invtrans_modelview0)).xyz;
-  float4 tmpvar_14;
+  float4 tmpvar_14 = 0;
   tmpvar_14 = mix (tmpvar_1, tmpvar_13, float4(isBillboard_8));
   tmpvar_5.w = pos_7.w;
   tmpvar_6.w = tmpvar_14.w;
   tmpvar_5.xyz = (pos_7.xyz * _mtl_u._Scale.xyz);
-  float4 pos_15;
+  float4 pos_15 = 0;
   pos_15.w = tmpvar_5.w;
-  float3 bend_16;
-  float2 vWavesSum_17;
-  float4 vWaves_18;
-  float fBranchPhase_19;
+  float3 bend_16 = 0;
+  float2 vWavesSum_17 = 0;
+  float4 vWaves_18 = 0;
+  float fBranchPhase_19 = 0;
   fBranchPhase_19 = (dot (_mtl_u._Object2World[3].xyz, float3(1.0, 1.0, 1.0)) + tmpvar_3.x);
-  float2 tmpvar_20;
+  float2 tmpvar_20 = 0;
   tmpvar_20.x = dot (tmpvar_5.xyz, float3((tmpvar_3.y + fBranchPhase_19)));
   tmpvar_20.y = fBranchPhase_19;
   vWaves_18 = ((fract(
     ((_mtl_u._Time.yy + tmpvar_20).xxyy * float4(1.975, 0.793, 0.375, 0.193))
   ) * 2.0) - 1.0);
-  float4 tmpvar_21;
+  float4 tmpvar_21 = 0;
   tmpvar_21 = abs(((
     fract((vWaves_18 + 0.5))
    * 2.0) - 1.0));
-  float4 tmpvar_22;
+  float4 tmpvar_22 = 0;
   tmpvar_22 = ((tmpvar_21 * tmpvar_21) * (3.0 - (2.0 * tmpvar_21)));
   vWaves_18 = tmpvar_22;
   vWavesSum_17 = (tmpvar_22.xz + tmpvar_22.yw);
@@ -97,18 +97,18 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
     ((_mtl_u._Wind.xyz * vWavesSum_17.y) * _mtl_i._uv1.y)
   ) * _mtl_u._Wind.w));
   pos_15.xyz = (pos_15.xyz + (_mtl_i._uv1.x * _mtl_u._Wind.xyz));
-  float3 tmpvar_23;
+  float3 tmpvar_23 = 0;
   tmpvar_23 = mix ((pos_15.xyz - (
     (dot (_mtl_u._SquashPlaneNormal.xyz, pos_15.xyz) + _mtl_u._SquashPlaneNormal.w)
    * _mtl_u._SquashPlaneNormal.xyz)), pos_15.xyz, float3(_mtl_u._SquashAmount));
-  float4 tmpvar_24;
+  float4 tmpvar_24 = 0;
   tmpvar_24.w = 1.0;
   tmpvar_24.xyz = tmpvar_23;
   tmpvar_5 = tmpvar_24;
-  float4 tmpvar_25;
+  float4 tmpvar_25 = 0;
   tmpvar_25.xyz = float3(1.0, 1.0, 1.0);
   tmpvar_25.w = tmpvar_3.w;
-  float3 tmpvar_26;
+  float3 tmpvar_26 = 0;
   tmpvar_26 = normalize(tmpvar_12);
   tmpvar_6.xyz = normalize(tmpvar_14.xyz);
   binormal_4 = (((tmpvar_26.yzx * tmpvar_6.zxy) - (tmpvar_26.zxy * tmpvar_6.yzx)) * tmpvar_14.w);
@@ -122,21 +122,21 @@ vertex xlatMtlShaderOutput xlatMtlMain (xlatMtlShaderInput _mtl_i [[stage_in]],
   tmpvar_27[2].x = tmpvar_6.z;
   tmpvar_27[2].y = binormal_4.z;
   tmpvar_27[2].z = tmpvar_26.z;
-  float4 tmpvar_28;
+  float4 tmpvar_28 = 0;
   tmpvar_28.w = 1.0;
   tmpvar_28.xyz = _mtl_u._WorldSpaceCameraPos;
   _mtl_o.gl_Position = (_mtl_u.glstate_matrix_mvp * tmpvar_24);
   _mtl_o.xlv_TEXCOORD0 = ((_mtl_i._uv0.xy * _mtl_u._MainTex_ST.xy) + _mtl_u._MainTex_ST.zw);
   _mtl_o.xlv_COLOR0 = half4(tmpvar_25);
-  float3 tmpvar_29;
+  float3 tmpvar_29 = 0;
   tmpvar_29 = (tmpvar_27 * (_mtl_u._World2Object * _mtl_u._WorldSpaceLightPos0).xyz);
   _mtl_o.xlv_TEXCOORD1 = half3(tmpvar_29);
-  float3 tmpvar_30;
+  float3 tmpvar_30 = 0;
   tmpvar_30 = (tmpvar_27 * ((
     (_mtl_u._World2Object * tmpvar_28)
   .xyz * _mtl_u.unity_Scale.w) - tmpvar_23));
   _mtl_o.xlv_TEXCOORD2 = half3(tmpvar_30);
-  float2 tmpvar_31;
+  float2 tmpvar_31 = 0;
   tmpvar_31 = (_mtl_u._LightMatrix0 * (_mtl_u._Object2World * tmpvar_24)).xy;
   _mtl_o.xlv_TEXCOORD3 = half2(tmpvar_31);
   return _mtl_o;