//-----------------------------------------------------------------------
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;
}
//-----------------------------------------------------------------------
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;
}
