void ShaderGenPrinterGLSL::printPixelShaderOutputStruct( Stream& stream, const MaterialFeatureData &featureData )
{
	// Determine the number of output targets we need
	U32 numMRTs = 0;
	for (U32 i = 0; i < FEATUREMGR->getFeatureCount(); i++)
	{
		const FeatureInfo &info = FEATUREMGR->getAt(i);
		if (featureData.features.hasFeature(*info.type))
			numMRTs |= info.feature->getOutputTargets(featureData);
	}

	WRITESTR("layout(location = 0) out vec4 OUT_FragColor0;\r\n");
	for (U32 i = 1; i < 4; i++)
	{
		if (numMRTs & 1 << i) {
			WRITESTR(avar("layout(location = %d) out vec4 OUT_FragColor%d;\r\n", i, i));
			extraRTs[i - 1] = true;
		}
	}
	WRITESTR("\r\n");
	WRITESTR("\r\n");
}

void ShaderGenPrinterGLSL::printPixelShaderCloser( Stream& stream )
{
	WRITESTR("   OUT_FragColor0 = col;\r\n");
	for (U32 i = 1; i < 4; i++)
	{
		if (extraRTs[i - 1])
			WRITESTR(avar("   OUT_FragColor%d = col%d;\r\n", i, i));
	}

   WRITESTR("}\r\n");
}


//In the header file
class ShaderGenPrinterGLSL : public ShaderGenPrinter
{
	bool extraRTs[3];

public:
	ShaderGenPrinterGLSL() { for (int i = 0; i < 3; i++) extraRTs[i] = false; }

   // ShaderGenPrinter
   virtual void printShaderHeader(Stream& stream);
   virtual void printMainComment(Stream& stream);
   virtual void printVertexShaderCloser(Stream& stream);
   virtual void printPixelShaderOutputStruct(Stream& stream, const MaterialFeatureData &featureData);
   virtual void printPixelShaderCloser(Stream& stream);
   virtual void printLine(Stream& stream, const String& line);
};