Enable the use of all builtins on the light shader

When using the light process in spatial shader,
the built-ins work as spected, now they work in forward+,
mobile and compatibility renderer.

drivers/gles3/shaders/scene.glsl

@@ -642,6 +642,10 @@ void light_compute(vec3 N, vec3 L, vec3 V, float A, vec3 light_color, bool is_di
 #if defined(USE_LIGHT_SHADER_CODE)
 	// light is written by the light shader
 
+	highp mat4 model_matrix = world_transform;
+	mat4 projection_matrix = scene_data.projection_matrix;
+	mat4 inv_projection_matrix = scene_data.inv_projection_matrix;
+
 	vec3 normal = N;
 	vec3 light = L;
 	vec3 view = V;

servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp

@@ -557,7 +557,7 @@ void SceneShaderForwardClustered::init(const String p_defines) {
 
 		actions.renames["MODEL_MATRIX"] = "read_model_matrix";
 		actions.renames["MODEL_NORMAL_MATRIX"] = "model_normal_matrix";
-		actions.renames["VIEW_MATRIX"] = "scene_data.view_matrix";
+		actions.renames["VIEW_MATRIX"] = "read_view_matrix";
 		actions.renames["INV_VIEW_MATRIX"] = "inv_view_matrix";
 		actions.renames["PROJECTION_MATRIX"] = "projection_matrix";
 		actions.renames["INV_PROJECTION_MATRIX"] = "inv_projection_matrix";
@@ -588,7 +588,7 @@ void SceneShaderForwardClustered::init(const String p_defines) {
 		actions.renames["PI"] = _MKSTR(Math_PI);
 		actions.renames["TAU"] = _MKSTR(Math_TAU);
 		actions.renames["E"] = _MKSTR(Math_E);
-		actions.renames["VIEWPORT_SIZE"] = "scene_data.viewport_size";
+		actions.renames["VIEWPORT_SIZE"] = "read_viewport_size";
 
 		actions.renames["FRAGCOORD"] = "gl_FragCoord";
 		actions.renames["FRONT_FACING"] = "gl_FrontFacing";

servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp

@@ -447,7 +447,7 @@ void SceneShaderForwardMobile::init(const String p_defines) {
 
 		actions.renames["MODEL_MATRIX"] = "read_model_matrix";
 		actions.renames["MODEL_NORMAL_MATRIX"] = "model_normal_matrix";
-		actions.renames["VIEW_MATRIX"] = "scene_data.view_matrix";
+		actions.renames["VIEW_MATRIX"] = "read_view_matrix";
 		actions.renames["INV_VIEW_MATRIX"] = "inv_view_matrix";
 		actions.renames["PROJECTION_MATRIX"] = "projection_matrix";
 		actions.renames["INV_PROJECTION_MATRIX"] = "inv_projection_matrix";
@@ -478,7 +478,7 @@ void SceneShaderForwardMobile::init(const String p_defines) {
 		actions.renames["PI"] = _MKSTR(Math_PI);
 		actions.renames["TAU"] = _MKSTR(Math_TAU);
 		actions.renames["E"] = _MKSTR(Math_E);
-		actions.renames["VIEWPORT_SIZE"] = "scene_data.viewport_size";
+		actions.renames["VIEWPORT_SIZE"] = "read_viewport_size";
 
 		actions.renames["FRAGCOORD"] = "gl_FragCoord";
 		actions.renames["FRONT_FACING"] = "gl_FrontFacing";

servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl

@@ -343,6 +343,8 @@ void vertex_shader(in uint instance_index, in bool is_multimesh, in uint multime
 
 	mat4 modelview = scene_data.view_matrix * model_matrix;
 	mat3 modelview_normal = mat3(scene_data.view_matrix) * model_normal_matrix;
+	mat4 read_view_matrix = scene_data.view_matrix;
+	vec2 read_viewport_size = scene_data.viewport_size;
 
 	{
 #CODE : VERTEX
@@ -823,7 +825,8 @@ void fragment_shader(in SceneData scene_data) {
 	inv_view_matrix[1][3] = 0.0;
 	inv_view_matrix[2][3] = 0.0;
 #endif
-
+	mat4 read_view_matrix = scene_data.view_matrix;
+	vec2 read_viewport_size = scene_data.viewport_size;
 	{
 #CODE : FRAGMENT
 	}

servers/rendering/renderer_rd/shaders/forward_mobile/scene_forward_mobile.glsl

@@ -342,6 +342,8 @@ void main() {
 
 	mat4 modelview = scene_data.view_matrix * model_matrix;
 	mat3 modelview_normal = mat3(scene_data.view_matrix) * model_normal_matrix;
+	mat4 read_view_matrix = scene_data.view_matrix;
+	vec2 read_viewport_size = scene_data.viewport_size;
 
 	{
 #CODE : VERTEX
@@ -771,6 +773,9 @@ void main() {
 	inv_view_matrix[2][3] = 0.0;
 #endif
 
+	mat4 read_view_matrix = scene_data.view_matrix;
+	vec2 read_viewport_size = scene_data.viewport_size;
+
 	{
 #CODE : FRAGMENT
 	}

servers/rendering/renderer_rd/shaders/forward_mobile/scene_forward_mobile_inc.glsl

@@ -14,6 +14,7 @@
 #endif
 #endif
 
+#define USING_MOBILE_RENDERER
 /* don't exceed 128 bytes!! */
 /* put instance data into our push content, not a array */
 layout(push_constant, std430) uniform DrawCall {

servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl

@@ -70,6 +70,21 @@ void light_compute(vec3 N, vec3 L, vec3 V, float A, vec3 light_color, bool is_di
 
 	mat4 inv_view_matrix = scene_data_block.data.inv_view_matrix;
 
+#ifdef USING_MOBILE_RENDERER
+	mat4 read_model_matrix = draw_call.transform;
+#else
+	mat4 read_model_matrix = instances.data[instance_index_interp].transform;
+#endif
+
+	mat4 read_view_matrix = scene_data_block.data.view_matrix;
+
+#undef projection_matrix
+#define projection_matrix scene_data_block.data.projection_matrix
+#undef inv_projection_matrix
+#define inv_projection_matrix scene_data_block.data.inv_projection_matrix
+
+	vec2 read_viewport_size = scene_data_block.data.viewport_size;
+
 	vec3 normal = N;
 	vec3 light = L;
 	vec3 view = V;