Fixed GLSL intepolator qualifier.

tools/shaderc/shaderc.cpp

@@ -1031,8 +1031,10 @@ namespace bgfx
 		VaryingMap varyingMap;
 		const char* parse = _varying;
 
-		while (NULL != parse
-			&&  *parse != '\0')
+		bool usesInterpolationQualifiers = false;
+
+		while (NULL !=  parse
+		&&     '\0' != *parse)
 		{
 			parse = bx::strws(parse);
 			const char* eol = bx::strFind(parse, ';');
@@ -1062,6 +1064,7 @@ namespace bgfx
 				{
 					interpolation = typen;
 					typen = parse = bx::strws(bx::strSkipWord(parse) );
+					usesInterpolationQualifiers = true;
 				}
 
 				const char* name      = parse = bx::strws(bx::strSkipWord(parse) );
@@ -1815,6 +1818,7 @@ namespace bgfx
 								{
 									const bool need130 = 120 == glsl && (false
 										|| bx::findIdentifierMatch(input, s_130)
+										|| usesInterpolationQualifiers
 										|| usesTexelFetch
 										);
 
@@ -1828,6 +1832,13 @@ namespace bgfx
 										glsl = 130;
 									}
 
+									if (need130)
+									{
+										bx::stringPrintf(code, "#define varying %s\n"
+											, 'f' == _options.shaderType ? "in" : "out"
+											);
+									}
+
 									if (usesInstanceID)
 									{
 										bx::stringPrintf(code
@@ -1923,7 +1934,7 @@ namespace bgfx
 									{
 										bx::stringPrintf(code
 											, "#define bgfxShadow2D(_sampler, _coord)     vec4_splat(texture(_sampler, _coord))\n"
-												"#define bgfxShadow2DProj(_sampler, _coord) vec4_splat(textureProj(_sampler, _coord))\n"
+											  "#define bgfxShadow2DProj(_sampler, _coord) vec4_splat(textureProj(_sampler, _coord))\n"
 											);
 									}
 									else
@@ -1936,18 +1947,27 @@ namespace bgfx
 								}
 								else
 								{
+									if (usesInterpolationQualifiers)
+									{
+										bx::stringPrintf(code, "#version 300 es\n");
+										bx::stringPrintf(code, "#define attribute in\n");
+										bx::stringPrintf(code, "#define varying %s\n"
+											, 'f' == _options.shaderType ? "in" : "out"
+											);
+									}
+
 									// Pretend that all extensions are available.
 									// This will be stripped later.
 									if (usesTextureLod)
 									{
 										bx::stringPrintf(code
 											, "#extension GL_EXT_shader_texture_lod : enable\n"
-												"#define texture2DLod      texture2DLodEXT\n"
-												"#define texture2DGrad     texture2DGradEXT\n"
-												"#define texture2DProjLod  texture2DProjLodEXT\n"
-												"#define texture2DProjGrad texture2DProjGradEXT\n"
-												"#define textureCubeLod    textureCubeLodEXT\n"
-												"#define textureCubeGrad   textureCubeGradEXT\n"
+											  "#define texture2DLod      texture2DLodEXT\n"
+											  "#define texture2DGrad     texture2DGradEXT\n"
+											  "#define texture2DProjLod  texture2DProjLodEXT\n"
+											  "#define texture2DProjGrad texture2DProjGradEXT\n"
+											  "#define textureCubeLod    textureCubeLodEXT\n"
+											  "#define textureCubeGrad   textureCubeGradEXT\n"
 											);
 									}
 
@@ -1965,8 +1985,8 @@ namespace bgfx
 									{
 										bx::stringPrintf(code
 											, "#extension GL_EXT_shadow_samplers : enable\n"
-												"#define shadow2D shadow2DEXT\n"
-												"#define shadow2DProj shadow2DProjEXT\n"
+											  "#define shadow2D shadow2DEXT\n"
+											  "#define shadow2DProj shadow2DProjEXT\n"
 											);
 									}
 
@@ -1988,7 +2008,7 @@ namespace bgfx
 									{
 										bx::stringPrintf(code
 											, "#extension GL_EXT_frag_depth : enable\n"
-												"#define gl_FragDepth gl_FragDepthEXT\n"
+											  "#define gl_FragDepth gl_FragDepthEXT\n"
 											);
 									}
 
@@ -1999,11 +2019,11 @@ namespace bgfx
 											);
 									}
 
-									bx::stringPrintf(code,
-											"#define ivec2 vec2\n"
-											"#define ivec3 vec3\n"
-											"#define ivec4 vec4\n"
-											);
+									bx::stringPrintf(code
+										, "#define ivec2 vec2\n"
+										  "#define ivec3 vec3\n"
+										  "#define ivec4 vec4\n"
+										);
 								}
 							}
 							else