//-----------------------------------------------------------------------
void HardwareSkinning::addPositionCalculations(Function* vsMain, int& funcCounter)
{
FunctionInvocation* curFuncInvocation = NULL;
if (mDoBoneCalculations == true)
{
//set functions to calculate world position
for(int i = 0 ; i < getWeightCount() ; ++i)
{
addIndexedPositionWeight(vsMain, i, funcCounter);
}
//update back the original position relative to the object
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_TRANSFORM, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInInvWorldMatrix, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamLocalPositionWorld, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamInPosition, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
//update the projective position thereby filling the transform stage role
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_TRANSFORM, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInViewProjMatrix, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamLocalPositionWorld, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamOutPositionProj, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
}
else
{
//update from object to world space
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_TRANSFORM, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInWorldMatrix, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamInPosition, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamLocalPositionWorld, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
//update from object to projective space
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_TRANSFORM, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInWorldViewProjMatrix, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamInPosition, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamOutPositionProj, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
}
}
//-----------------------------------------------------------------------
void DualQuaternionSkinning::addPositionCalculations(Function* vsMain, int& funcCounter)
{
FunctionInvocation* curFuncInvocation = NULL;
if (mDoBoneCalculations == true)
{
if(mScalingShearingSupport)
{
//Construct a scaling and shearing matrix based on the blend weights
for(int i = 0 ; i < getWeightCount() ; ++i)
{
//Assign the local param based on the current index of the scaling and shearing matrices
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_ASSIGN, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInScaleShearMatrices, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamInIndices, Operand::OPS_IN, indexToMask(i), 1);
curFuncInvocation->pushOperand(mParamTempFloat3x4, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
//Calculate the resultant scaling and shearing matrix based on the weights given
addIndexedPositionWeight(vsMain, i, mParamTempFloat3x4, mParamTempFloat3x4, mParamBlendS, funcCounter);
}
//Transform the position based by the scaling and shearing matrix
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_TRANSFORM, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamBlendS, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamInPosition, Operand::OPS_IN, Operand::OPM_XYZ);
curFuncInvocation->pushOperand(mParamLocalBlendPosition, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
}
else
{
//Assign the input position to the local blended position
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_ASSIGN, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInPosition, Operand::OPS_IN, Operand::OPM_XYZ);
curFuncInvocation->pushOperand(mParamLocalBlendPosition, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
}
//Set functions to calculate world position
for(int i = 0 ; i < getWeightCount() ; ++i)
{
//Set the index of the matrix
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_ASSIGN, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInIndices, Operand::OPS_IN, indexToMask(i));
curFuncInvocation->pushOperand(mParamIndex1, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
//Multiply the index by 2
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_MODULATE, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(ParameterFactory::createConstParamFloat(2.0f), Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamIndex1, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamIndex1, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
//Add 1 to the index and assign as the second row's index
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_ADD, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(ParameterFactory::createConstParamFloat(1.0f), Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamIndex1, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamIndex2, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
//Build the dual quaternion matrix
curFuncInvocation = OGRE_NEW FunctionInvocation(SGX_FUNC_BUILD_DUAL_QUATERNION_MATRIX, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInWorldMatrices, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamIndex1, Operand::OPS_IN, Operand::OPM_ALL, 1);
curFuncInvocation->pushOperand(mParamInWorldMatrices, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamIndex2, Operand::OPS_IN, Operand::OPM_ALL, 1);
curFuncInvocation->pushOperand(mParamTempFloat2x4, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
//Adjust the podalities of the dual quaternions
if(mCorrectAntipodalityHandling)
{
adjustForCorrectAntipodality(vsMain, i, funcCounter, mParamTempFloat2x4);
}
//Calculate the resultant dual quaternion based on the weights given
addIndexedPositionWeight(vsMain, i, mParamTempFloat2x4, mParamTempFloat2x4, mParamBlendDQ, funcCounter);
}
//Normalize the dual quaternion
curFuncInvocation = OGRE_NEW FunctionInvocation(SGX_FUNC_NORMALIZE_DUAL_QUATERNION, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamBlendDQ, Operand::OPS_INOUT);
vsMain->addAtomInstance(curFuncInvocation);
//Calculate the blend position
curFuncInvocation = OGRE_NEW FunctionInvocation(SGX_FUNC_CALCULATE_BLEND_POSITION, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamLocalBlendPosition, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamBlendDQ, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamTempFloat4, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
//Update from object to projective space
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_TRANSFORM, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInViewProjMatrix, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamTempFloat4, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamOutPositionProj, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
}
else
{
//update from object to world space
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_TRANSFORM, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInWorldMatrix, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamInPosition, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamLocalPositionWorld, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
//update from object to projective space
curFuncInvocation = OGRE_NEW FunctionInvocation(FFP_FUNC_TRANSFORM, FFP_VS_TRANSFORM, funcCounter++);
curFuncInvocation->pushOperand(mParamInWorldViewProjMatrix, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamInPosition, Operand::OPS_IN);
curFuncInvocation->pushOperand(mParamOutPositionProj, Operand::OPS_OUT);
vsMain->addAtomInstance(curFuncInvocation);
}
}