void CgFXPassChunk::updateStateUniforms(DrawEnv *pEnv)
{
CgFXMaterial *pMat = _sfMaterial.getValue();
OSG_ASSERT(pMat != NULL);
CGeffect pEffect = pMat->getEffect ();
UInt32 uiStateVars = pMat->getStateVariables();
const std::string *vStateVarNames = pMat->getStateVarNames ();
UInt32 uiMask = 0x0001;
OSG_ASSERT(pEffect != NULL);
Matrix mObj2World = pEnv->getObjectToWorld();
std::string szTmp;
for(UInt32 i = 0; i < CgFXMaterial::NumStateVars; ++i)
{
if(uiStateVars == 0x0000)
break;
switch(uiStateVars & uiMask)
{
case CgFXMaterial::CgProjectionMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgProjection].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
cgGLSetMatrixParameterfc(
pMatrixParam,
pEnv->_openGLState.getProjection().getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc", NULL);
}
break;
case CgFXMaterial::CgModelViewProjectionMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgModelViewProjection].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
Matrix mWorld2Scrn = pEnv->getWorldToScreen();
mWorld2Scrn.mult(mObj2World);
cgGLSetMatrixParameterfc(pMatrixParam,
mWorld2Scrn.getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
// -------------
// Model | World
// -------------
case CgFXMaterial::CgModelMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgModel].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
cgGLSetMatrixParameterfc(pMatrixParam,
mObj2World.getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
case CgFXMaterial::CgModelIMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgModelI].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
Matrix mModelI = mObj2World;
mModelI.invert();
cgGLSetMatrixParameterfc(pMatrixParam,
mModelI.getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
case CgFXMaterial::CgModelITMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgModelIT].c_str());
OSG_ASSERT(pMatrixParam != NULL);
Matrix mModelIT = mObj2World;
mModelIT.invert ();
mModelIT.transpose();
cgGLSetMatrixParameterfc(pMatrixParam,
mModelIT.getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
// ---------------------
// ModelView | WorldView
// ---------------------
case CgFXMaterial::CgModelViewMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[CgFXMaterial::CgModelView].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.mult(mObj2World);
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
case CgFXMaterial::CgModelViewIMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[CgFXMaterial::CgModelViewI].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.mult(mObj2World);
mCameraViewing.invert();
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
case CgFXMaterial::CgModelViewITMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[CgFXMaterial::CgModelViewIT].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.mult (mObj2World);
mCameraViewing.invert ( );
mCameraViewing.transpose( );
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
// -------------
// View
// -------------
case CgFXMaterial::CgViewMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgView].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
cgGLSetMatrixParameterfc(pMatrixParam,
pEnv->getCameraViewing().getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
case CgFXMaterial::CgViewIMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgViewI].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
OSG::Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.invert();
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
case CgFXMaterial::CgViewITMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgViewIT].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
OSG::Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.invert ();
mCameraViewing.transpose();
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
case CgFXMaterial::CgViewProjectionMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgViewProjection].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pMatrixParam != NULL);
cgGLSetMatrixParameterfc(pMatrixParam,
pEnv->getWorldToScreen().getValues());
CgFXMaterial::checkForCgError("cgGLSetMatrixParameterfc",
NULL);
}
break;
case CgFXMaterial::CgTimeMask:
{
CGparameter pTime =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgTime].c_str());
CgFXMaterial::checkForCgError("cgGetNamedEffectParameter",
NULL);
OSG_ASSERT(pTime != NULL);
static const UInt16 MaxLeftDecDigits(4);
// getSystemTime() returns a time value as a 64-bit floating
// point number. But the time value taken by Cg is a 32-bit
// float. This can cause a problem with precision when
// getSystemTime() returns large values, that truncate when cast
// to a 32-bit float.
//
// To deal with this, we are removing the most significant
// decimal digits left of the decimal points after the
// MaxLeftDecDigits one
Time tSysTime(OSG::getSystemTime());
Time tBase10Shift(osgPow<Time>(10, MaxLeftDecDigits));
Time tTruncValue(
tSysTime -
(floor(tSysTime / tBase10Shift) * tBase10Shift));
cgSetParameter1f(pTime, static_cast<Real32>(tTruncValue));
}
break;
default:
break;
};
uiStateVars &= ~uiMask;
uiMask = uiMask << 1;
}
}
void CgFXPassChunk::updateStateUniforms(DrawEnv *pEnv)
{
CgFXMaterial *pMat = _sfMaterial.getValue();
OSG_ASSERT(pMat != NULL);
CGeffect pEffect = pMat->getEffect ();
UInt32 uiStateVars = pMat->getStateVariables();
const std::string *vStateVarNames = pMat->getStateVarNames ();
UInt32 uiMask = 0x0001;
OSG_ASSERT(pEffect != NULL);
Matrix mObj2World = pEnv->getObjectToWorld();
std::string szTmp;
for(UInt32 i = 0; i < CgFXMaterial::NumStateVars; ++i)
{
if(uiStateVars == 0x0000)
break;
switch(uiStateVars & uiMask)
{
case CgFXMaterial::CgProjectionMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgProjection].c_str());
OSG_ASSERT(pMatrixParam != NULL);
cgGLSetMatrixParameterfc(
pMatrixParam,
pEnv->_openGLState.getProjection().getValues());
}
break;
case CgFXMaterial::CgModelViewProjectionMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgModelViewProjection].c_str());
OSG_ASSERT(pMatrixParam != NULL);
Matrix mWorld2Scrn = pEnv->getWorldToScreen();
mWorld2Scrn.mult(mObj2World);
cgGLSetMatrixParameterfc(pMatrixParam,
mWorld2Scrn.getValues());
}
break;
// -------------
// Model | World
// -------------
case CgFXMaterial::CgModelMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgModel].c_str());
OSG_ASSERT(pMatrixParam != NULL);
cgGLSetMatrixParameterfc(pMatrixParam,
mObj2World.getValues());
}
break;
case CgFXMaterial::CgModelIMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgModelI].c_str());
OSG_ASSERT(pMatrixParam != NULL);
Matrix mModelI = mObj2World;
mModelI.invert();
cgGLSetMatrixParameterfc(pMatrixParam,
mModelI.getValues());
}
break;
case CgFXMaterial::CgModelITMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgModelIT].c_str());
OSG_ASSERT(pMatrixParam != NULL);
Matrix mModelIT = mObj2World;
mModelIT.invert ();
mModelIT.transpose();
cgGLSetMatrixParameterfc(pMatrixParam,
mModelIT.getValues());
}
break;
// ---------------------
// ModelView | WorldView
// ---------------------
case CgFXMaterial::CgModelViewMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[CgFXMaterial::CgModelView].c_str());
OSG_ASSERT(pMatrixParam != NULL);
Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.mult(mObj2World);
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
}
break;
case CgFXMaterial::CgModelViewIMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[CgFXMaterial::CgModelViewI].c_str());
OSG_ASSERT(pMatrixParam != NULL);
Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.mult(mObj2World);
mCameraViewing.invert();
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
}
break;
case CgFXMaterial::CgModelViewITMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[CgFXMaterial::CgModelViewIT].c_str());
OSG_ASSERT(pMatrixParam != NULL);
Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.mult (mObj2World);
mCameraViewing.invert ( );
mCameraViewing.transpose( );
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
}
break;
// -------------
// View
// -------------
case CgFXMaterial::CgViewMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgView].c_str());
OSG_ASSERT(pMatrixParam != NULL);
cgGLSetMatrixParameterfc(pMatrixParam,
pEnv->getCameraViewing().getValues());
}
break;
case CgFXMaterial::CgViewIMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgViewI].c_str());
OSG_ASSERT(pMatrixParam != NULL);
OSG::Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.invert();
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
}
break;
case CgFXMaterial::CgViewITMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgViewIT].c_str());
OSG_ASSERT(pMatrixParam != NULL);
OSG::Matrix mCameraViewing = pEnv->getCameraViewing();
mCameraViewing.invert ();
mCameraViewing.transpose();
cgGLSetMatrixParameterfc(pMatrixParam,
mCameraViewing.getValues());
}
break;
case CgFXMaterial::CgViewProjectionMask:
{
CGparameter pMatrixParam =
cgGetNamedEffectParameter(
pEffect,
vStateVarNames[
CgFXMaterial::CgViewProjection].c_str());
OSG_ASSERT(pMatrixParam != NULL);
cgGLSetMatrixParameterfc(pMatrixParam,
pEnv->getWorldToScreen().getValues());
}
break;
default:
break;
};
uiStateVars &= ~uiMask;
uiMask = uiMask << 1;
}
}