//-----------------------------------------------------------------------
bool FFPTexturing::addPSFunctionInvocations(TextureUnitParams* textureUnitParams, Function* psMain, int& internalCounter)
{
	const LayerBlendModeEx& colourBlend = textureUnitParams->mTextureUnitState->getColourBlendMode();
	const LayerBlendModeEx& alphaBlend  = textureUnitParams->mTextureUnitState->getAlphaBlendMode();
	ParameterPtr source1;
	ParameterPtr source2;
	int groupOrder = FFP_PS_TEXTURING;
	
			
	// Add texture sampling code.
	ParameterPtr texel = psMain->resolveLocalParameter(Parameter::SPS_UNKNOWN, 0, "texel", GCT_FLOAT4);
	FunctionInvocation* curFuncInvocation = NULL;
	
	if (textureUnitParams->mTexCoordCalcMethod == TEXCALC_PROJECTIVE_TEXTURE)
		curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_SAMPLE_TEXTURE_PROJ, groupOrder, internalCounter++);
	else	
		curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_SAMPLE_TEXTURE, groupOrder, internalCounter++);

	curFuncInvocation->pushOperand(textureUnitParams->mTextureSampler, Operand::OPS_IN);
	curFuncInvocation->pushOperand(textureUnitParams->mPSInputTexCoord, Operand::OPS_IN);
	curFuncInvocation->pushOperand(texel, Operand::OPS_OUT);
	psMain->addAtomInstace(curFuncInvocation);

	// Build colour argument for source1.
	source1 = psMain->resolveLocalParameter(Parameter::SPS_UNKNOWN, 0, "source1", GCT_FLOAT4);
		
	addPSArgumentInvocations(psMain, source1, texel, 
		textureUnitParams->mTextureSamplerIndex,
		colourBlend.source1, colourBlend.colourArg1, 
		colourBlend.alphaArg1, false, groupOrder, internalCounter);

	// Build colour argument for source2.
	source2 = psMain->resolveLocalParameter(Parameter::SPS_UNKNOWN, 0, "source2", GCT_FLOAT4);

	addPSArgumentInvocations(psMain, source2, texel, 
		textureUnitParams->mTextureSamplerIndex,
		colourBlend.source2, colourBlend.colourArg2, 
		colourBlend.alphaArg2, false, groupOrder, internalCounter);

	bool needDifferentAlphaBlend = false;
	if (alphaBlend.operation != colourBlend.operation ||
		alphaBlend.source1 != colourBlend.source1 ||
		alphaBlend.source2 != colourBlend.source2 ||
		colourBlend.source1 == LBS_MANUAL ||
		colourBlend.source2 == LBS_MANUAL ||
		alphaBlend.source1 == LBS_MANUAL ||
		alphaBlend.source2 == LBS_MANUAL)
		needDifferentAlphaBlend = true;

	// Build colours blend
	addPSBlendInvocations(psMain, source1, source2, texel, 
		textureUnitParams->mTextureSamplerIndex,
		colourBlend, groupOrder, internalCounter, 
		needDifferentAlphaBlend ? (Operand::OPM_X | Operand::OPM_Y | Operand::OPM_Z )  : Operand::OPM_ALL);

	// Case we need different alpha channel code.
	if (needDifferentAlphaBlend)
	{
		// Build alpha argument for source1.
		addPSArgumentInvocations(psMain, source1, texel,
			textureUnitParams->mTextureSamplerIndex, 
			alphaBlend.source1, alphaBlend.colourArg1, 
			alphaBlend.alphaArg1, true, groupOrder, internalCounter);

		// Build alpha argument for source2.
		addPSArgumentInvocations(psMain, source2, texel, 
			textureUnitParams->mTextureSamplerIndex,
			alphaBlend.source2, alphaBlend.colourArg2, 
			alphaBlend.alphaArg2, true, groupOrder, internalCounter);

		// Build alpha blend
		addPSBlendInvocations(psMain, source1, source2, texel, 
			textureUnitParams->mTextureSamplerIndex, 
			alphaBlend, groupOrder, internalCounter,
			Operand::OPM_W);
	}
	
	

	return true;
}
Esempio n. 2
0
//-----------------------------------------------------------------------
bool FFPTexturing::addPSFunctionInvocations(TextureUnitParams* textureUnitParams, Function* psMain, int& internalCounter)
{
	const LayerBlendModeEx& colourBlend = textureUnitParams->mTextureUnitState->getColourBlendMode();
	const LayerBlendModeEx& alphaBlend  = textureUnitParams->mTextureUnitState->getAlphaBlendMode();
	ParameterPtr source1;
	ParameterPtr source2;
	int groupOrder = FFP_PS_TEXTURING;
	
			
	// Add texture sampling code.
	ParameterPtr texel = psMain->resolveLocalParameter(Parameter::SPS_UNKNOWN, 0, c_ParamTexelEx + StringConverter::toString(textureUnitParams->mTextureSamplerIndex), GCT_FLOAT4);
	addPSSampleTexelInvocation(textureUnitParams, psMain, texel, FFP_PS_SAMPLING, internalCounter);

	// Build colour argument for source1.
	source1 = psMain->resolveLocalParameter(Parameter::SPS_UNKNOWN, 0, "source1", GCT_FLOAT4);
		
	addPSArgumentInvocations(psMain, source1, texel, 
		textureUnitParams->mTextureSamplerIndex,
		colourBlend.source1, colourBlend.colourArg1, 
		colourBlend.alphaArg1, false, groupOrder, internalCounter);

	// Build colour argument for source2.
	source2 = psMain->resolveLocalParameter(Parameter::SPS_UNKNOWN, 0, "source2", GCT_FLOAT4);

	addPSArgumentInvocations(psMain, source2, texel, 
		textureUnitParams->mTextureSamplerIndex,
		colourBlend.source2, colourBlend.colourArg2, 
		colourBlend.alphaArg2, false, groupOrder, internalCounter);

	bool needDifferentAlphaBlend = false;
	if (alphaBlend.operation != colourBlend.operation ||
		alphaBlend.source1 != colourBlend.source1 ||
		alphaBlend.source2 != colourBlend.source2 ||
		colourBlend.source1 == LBS_MANUAL ||
		colourBlend.source2 == LBS_MANUAL ||
		alphaBlend.source1 == LBS_MANUAL ||
		alphaBlend.source2 == LBS_MANUAL)
		needDifferentAlphaBlend = true;

	// Build colours blend
	addPSBlendInvocations(psMain, source1, source2, texel, 
		textureUnitParams->mTextureSamplerIndex,
		colourBlend, groupOrder, internalCounter, 
		needDifferentAlphaBlend ? (Operand::OPM_X | Operand::OPM_Y | Operand::OPM_Z )  : Operand::OPM_ALL);

	// Case we need different alpha channel code.
	if (needDifferentAlphaBlend)
	{
		// Build alpha argument for source1.
		addPSArgumentInvocations(psMain, source1, texel,
			textureUnitParams->mTextureSamplerIndex, 
			alphaBlend.source1, alphaBlend.colourArg1, 
			alphaBlend.alphaArg1, true, groupOrder, internalCounter);

		// Build alpha argument for source2.
		addPSArgumentInvocations(psMain, source2, texel, 
			textureUnitParams->mTextureSamplerIndex,
			alphaBlend.source2, alphaBlend.colourArg2, 
			alphaBlend.alphaArg2, true, groupOrder, internalCounter);

		// Build alpha blend
		addPSBlendInvocations(psMain, source1, source2, texel, 
			textureUnitParams->mTextureSamplerIndex, 
			alphaBlend, groupOrder, internalCounter,
			Operand::OPM_W);
	}
	
	

	return true;
}