void setUpBaseParameters(const GpuProgramParametersSharedPtr& params)
{
assert(params.isNull()==false);
struct AutoParamPair { String name; GpuProgramParameters::AutoConstantType type; };
//A list of auto params that might be present in the shaders generated
static const AutoParamPair AUTO_PARAMS[] = {
{ "vpWidth", GpuProgramParameters::ACT_VIEWPORT_WIDTH },
{ "vpHeight", GpuProgramParameters::ACT_VIEWPORT_HEIGHT },
{ "worldView", GpuProgramParameters::ACT_WORLDVIEW_MATRIX },
{ "invProj", GpuProgramParameters::ACT_INVERSE_PROJECTION_MATRIX },
{ "invView", GpuProgramParameters::ACT_INVERSE_VIEW_MATRIX },
{ "flip", GpuProgramParameters::ACT_RENDER_TARGET_FLIPPING },
{ "lightDiffuseColor", GpuProgramParameters::ACT_LIGHT_DIFFUSE_COLOUR },
{ "lightSpecularColor", GpuProgramParameters::ACT_LIGHT_SPECULAR_COLOUR },
{ "lightFalloff", GpuProgramParameters::ACT_LIGHT_ATTENUATION },
{ "lightPos", GpuProgramParameters::ACT_LIGHT_POSITION_VIEW_SPACE },
{ "lightDir", GpuProgramParameters::ACT_LIGHT_DIRECTION_VIEW_SPACE },
{ "spotParams", GpuProgramParameters::ACT_SPOTLIGHT_PARAMS },
{ "farClipDistance", GpuProgramParameters::ACT_FAR_CLIP_DISTANCE },
{ "shadowViewProjMat", GpuProgramParameters::ACT_TEXTURE_VIEWPROJ_MATRIX }
};
int numParams = sizeof(AUTO_PARAMS) / sizeof(AutoParamPair);
for (int i=0; i<numParams; i++)
{
if (params->_findNamedConstantDefinition(AUTO_PARAMS[i].name))
{
params->setNamedAutoConstant(AUTO_PARAMS[i].name, AUTO_PARAMS[i].type);
}
}
}
void DepthOfFieldEffect::notifyMaterialSetup(uint32 passId, MaterialPtr& material)
{
switch (passId)
{
case BlurPass:
{
//float pixelSize[2] = {
// 1.0f / (gEnv->ogreViewPort->getActualWidth() / BLUR_DIVISOR),
// 1.0f / (gEnv->ogreViewPort->getActualHeight() / BLUR_DIVISOR)};
// Adjust fragment program parameters
Ogre::Vector3 ps = Ogre::Vector3(1.0f / (mWidth / BLUR_DIVISOR),1.0f / (mHeight / BLUR_DIVISOR), 1.0f);
float pixelSize[3] = { ps.x, ps.y, ps.z };
GpuProgramParametersSharedPtr fragParams = material->getBestTechnique()->getPass(0)->getFragmentProgramParameters();
if ((!fragParams.isNull())&&(fragParams->_findNamedConstantDefinition("pixelSize")))
fragParams->setNamedConstant("pixelSize", pixelSize, 1, 3);
break;
}
case OutputPass:
{
float pixelSizeScene[3] = {
1.0f / mWidth,
1.0f / mHeight,
0};
float pixelSizeBlur[3] = {
1.0f / (mWidth / BLUR_DIVISOR),
1.0f / (mHeight / BLUR_DIVISOR),
0};
// Adjust fragment program parameters
GpuProgramParametersSharedPtr fragParams =
material->getBestTechnique()->getPass(0)->getFragmentProgramParameters();
if ((!fragParams.isNull())&&(fragParams->_findNamedConstantDefinition("pixelSizeScene")))
fragParams->setNamedConstant("pixelSizeScene", pixelSizeScene,1,3);
if ((!fragParams.isNull())&&(fragParams->_findNamedConstantDefinition("pixelSizeBlur")))
fragParams->setNamedConstant("pixelSizeBlur", pixelSizeBlur,1,3);
break;
}
}
}
//---------------------------------------------------------------------
void GpuProgramUsage::recreateParameters()
{
// Keep a reference to old ones to copy
GpuProgramParametersSharedPtr savedParams = mParameters;
// Create new params
mParameters = mProgram->createParameters();
// Copy old (matching) values across
// Don't use copyConstantsFrom since program may be different
if (!savedParams.isNull())
mParameters->copyMatchingNamedConstantsFrom(*savedParams.get());
mRecreateParams = false;
}
void DepthOfFieldEffect::preViewportUpdate(const Ogre::RenderTargetViewportEvent& evt)
{
float dofParams[4] = {mNearDepth, mFocalDepth, mFarDepth, mFarBlurCutoff};
// Adjust fragment program parameters for depth pass
GpuProgramParametersSharedPtr fragParams =
mDepthTechnique->getPass(0)->getFragmentProgramParameters();
if ((!fragParams.isNull())&&(fragParams->_findNamedConstantDefinition("dofParams")))
fragParams->setNamedConstant("dofParams", dofParams,1,4);
evt.source->setVisibilityMask(~DEPTHMAP_DISABLED);
// Add 'this' as a RenderableListener to replace the technique for all renderables
RenderQueue* queue = evt.source->getCamera()->getSceneManager()->getRenderQueue();
queue->setRenderableListener(this);
}