Implement basic GLSL ES 3.0 texture sampling.

src/OpenGL/compiler/Initialize.cpp

@@ -379,6 +379,39 @@ void InsertBuiltInFunctions(GLenum type, const ShBuiltInResources &resources, TS
 		symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture3DLod", sampler3D, float3, float1);
 	}
 
+    TType *gvec4 = new TType(EbtGVec4);
+
+    TType *gsampler2D = new TType(EbtGSampler2D);
+    TType *gsamplerCube = new TType(EbtGSamplerCube);
+    TType *gsampler3D = new TType(EbtGSampler3D);
+    TType *gsampler2DArray = new TType(EbtGSampler2DArray);
+
+    //
+    // Texture Functions for GLSL ES 3.0
+    //
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler2D, float2);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler3D, float3);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsamplerCube, float3);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler2DArray, float3);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler2D, float3);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler2D, float4);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler3D, float4);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLod", gsampler2D, float2, float1);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLod", gsampler3D, float3, float1);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLod", gsamplerCube, float3, float1);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureLod", gsampler2DArray, float3, float1);
+
+    if(type == GL_FRAGMENT_SHADER)
+    {
+        symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler2D, float2, float1);
+        symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler3D, float3, float1);
+        symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsamplerCube, float3, float1);
+        symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "texture", gsampler2DArray, float3, float1);
+        symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler2D, float3, float1);
+        symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler2D, float4, float1);
+        symbolTable.insertBuiltIn(ESSL3_BUILTINS, gvec4, "textureProj", gsampler3D, float4, float1);
+    }
+
     //
     // Depth range in window coordinates
     //

src/OpenGL/compiler/OutputASM.cpp

@@ -768,10 +768,10 @@ namespace glsl
 				{
 					TString name = TFunction::unmangleName(node->getName());
 
-					if(name == "texture2D" || name == "textureCube" || name == "texture3D")
+					if(name == "texture" || name == "texture2D" || name == "textureCube" || name == "texture3D")
 					{
 						if(argumentCount == 2)
-						{	
+						{
 							emit(sw::Shader::OPCODE_TEX, result, arg[1], arg[0]);
 						}
 						else if(argumentCount == 3)   // bias