Added check for temporary register overflow

src/Main/Config.hpp

@@ -96,6 +96,7 @@ namespace sw
 		MAX_PROGRAM_TEXEL_OFFSET = 7,
 		MAX_TEXTURE_LOD = MIPMAP_LEVELS - 2,   // Trilinear accesses lod+1
 		RENDERTARGETS = 8,
+		NUM_TEMPORARY_REGISTERS = 4096,
 	};
 }
 

src/OpenGL/compiler/OutputASM.cpp

@@ -3031,7 +3031,14 @@ namespace glsl
 
 	int OutputASM::temporaryRegister(TIntermTyped *temporary)
 	{
-		return allocate(temporaries, temporary);
+		int index = allocate(temporaries, temporary);
+		if(index >= sw::NUM_TEMPORARY_REGISTERS)
+		{
+			mContext.error(temporary->getLine(),
+				"Too many temporary registers required to compile shader",
+				pixelShader ? "pixel shader" : "vertex shader");
+		}
+		return index;
 	}
 
 	void OutputASM::setPixelShaderInputs(const TType& type, int var, bool flat)

src/Shader/PixelProgram.hpp

@@ -55,7 +55,7 @@ namespace sw
 
 	private:
 		// Temporary registers
-		RegisterArray<4096> r;
+		RegisterArray<NUM_TEMPORARY_REGISTERS> r;
 
 		// Color outputs
 		Vector4f c[RENDERTARGETS];

src/Shader/VertexProgram.hpp

@@ -37,7 +37,7 @@ namespace sw
 	private:
 		const VertexShader *const shader;
 
-		RegisterArray<4096> r;   // Temporary registers
+		RegisterArray<NUM_TEMPORARY_REGISTERS> r;   // Temporary registers
 		Vector4f a0;
 		Array<Int, 4> aL;
 		Vector4f p0;