void AdvancedLightBinManager::render( SceneRenderState *state )
{
PROFILE_SCOPE( AdvancedLightManager_Render );
// Take a look at the SceneRenderState and see if we should skip drawing the pre-pass
if( state->disableAdvancedLightingBins() )
return;
// Automagically save & restore our viewport and transforms.
GFXTransformSaver saver;
if( !mLightManager )
return;
// Get the sunlight. If there's no sun, and no lights in the bins, no draw
LightInfo *sunLight = mLightManager->getSpecialLight( LightManager::slSunLightType );
if( !sunLight && mLightBin.empty() )
return;
GFXDEBUGEVENT_SCOPE( AdvancedLightBinManager_Render, ColorI::RED );
// Tell the superclass we're about to render
if ( !_onPreRender( state ) )
return;
// Clear as long as there isn't MRT population of light buffer with lightmap data
if ( !MRTLightmapsDuringPrePass() )
GFX->clear(GFXClearTarget, ColorI(0, 0, 0, 0), 1.0f, 0);
// Restore transforms
MatrixSet &matrixSet = getRenderPass()->getMatrixSet();
matrixSet.restoreSceneViewProjection();
const MatrixF &worldToCameraXfm = matrixSet.getWorldToCamera();
// Set up the SG Data
SceneData sgData;
sgData.init( state );
// There are cases where shadow rendering is disabled.
const bool disableShadows = state->isReflectPass() || ShadowMapPass::smDisableShadows;
// Pick the right material for rendering the sunlight... we only
// cast shadows when its enabled and we're not in a reflection.
LightMaterialInfo *vectorMatInfo;
if ( sunLight &&
sunLight->getCastShadows() &&
!disableShadows &&
sunLight->getExtended<ShadowMapParams>() )
vectorMatInfo = _getLightMaterial( LightInfo::Vector, ShadowType_PSSM, false );
else
vectorMatInfo = _getLightMaterial( LightInfo::Vector, ShadowType_None, false );
// Initialize and set the per-frame parameters after getting
// the vector light material as we use lazy creation.
_setupPerFrameParameters( state );
// Draw sunlight/ambient
if ( sunLight && vectorMatInfo )
{
GFXDEBUGEVENT_SCOPE( AdvancedLightBinManager_Render_Sunlight, ColorI::RED );
// Set up SG data
setupSGData( sgData, state, sunLight );
vectorMatInfo->setLightParameters( sunLight, state, worldToCameraXfm );
// Set light holds the active shadow map.
mShadowManager->setLightShadowMapForLight( sunLight );
// Set geometry
GFX->setVertexBuffer( mFarFrustumQuadVerts );
GFX->setPrimitiveBuffer( NULL );
// Render the material passes
while( vectorMatInfo->matInstance->setupPass( state, sgData ) )
{
vectorMatInfo->matInstance->setSceneInfo( state, sgData );
vectorMatInfo->matInstance->setTransforms( matrixSet, state );
GFX->drawPrimitive( GFXTriangleFan, 0, 2 );
}
}
// Blend the lights in the bin to the light buffer
for( LightBinIterator itr = mLightBin.begin(); itr != mLightBin.end(); itr++ )
{
LightBinEntry& curEntry = *itr;
LightInfo *curLightInfo = curEntry.lightInfo;
LightMaterialInfo *curLightMat = curEntry.lightMaterial;
const U32 numPrims = curEntry.numPrims;
const U32 numVerts = curEntry.vertBuffer->mNumVerts;
// Skip lights which won't affect the scene.
if ( !curLightMat || curLightInfo->getBrightness() <= 0.001f )
continue;
GFXDEBUGEVENT_SCOPE( AdvancedLightBinManager_Render_Light, ColorI::RED );
setupSGData( sgData, state, curLightInfo );
curLightMat->setLightParameters( curLightInfo, state, worldToCameraXfm );
mShadowManager->setLightShadowMap( curEntry.shadowMap );
// Let the shadow know we're about to render from it.
if ( curEntry.shadowMap )
curEntry.shadowMap->preLightRender();
// Set geometry
GFX->setVertexBuffer( curEntry.vertBuffer );
GFX->setPrimitiveBuffer( curEntry.primBuffer );
// Render the material passes
while( curLightMat->matInstance->setupPass( state, sgData ) )
{
// Set transforms
matrixSet.setWorld(*sgData.objTrans);
curLightMat->matInstance->setTransforms(matrixSet, state);
curLightMat->matInstance->setSceneInfo(state, sgData);
if(curEntry.primBuffer)
GFX->drawIndexedPrimitive(GFXTriangleList, 0, 0, numVerts, 0, numPrims);
else
GFX->drawPrimitive(GFXTriangleList, 0, numPrims);
}
// Tell it we're done rendering.
if ( curEntry.shadowMap )
curEntry.shadowMap->postLightRender();
}
// Set NULL for active shadow map (so nothing gets confused)
mShadowManager->setLightShadowMap(NULL);
GFX->setVertexBuffer( NULL );
GFX->setPrimitiveBuffer( NULL );
// Fire off a signal to let others know that light-bin rendering is ending now
getRenderSignal().trigger(state, this);
// Finish up the rendering
_onPostRender();
}
void AdvancedLightManager::setLightInfo( ProcessedMaterial *pmat,
const Material *mat,
const SceneData &sgData,
const SceneRenderState *state,
U32 pass,
GFXShaderConstBuffer *shaderConsts)
{
// Skip this if we're rendering from the prepass bin.
if ( sgData.binType == SceneData::PrePassBin )
return;
PROFILE_SCOPE(AdvancedLightManager_setLightInfo);
LightingShaderConstants *lsc = getLightingShaderConstants(shaderConsts);
LightShadowMap *lsm = SHADOWMGR->getCurrentShadowMap();
LightInfo *light;
if ( lsm )
light = lsm->getLightInfo();
else
{
light = sgData.lights[0];
if ( !light )
light = getDefaultLight();
}
// NOTE: If you encounter a crash from this point forward
// while setting a shader constant its probably because the
// mConstantLookup has bad shaders/constants in it.
//
// This is a known crash bug that can occur if materials/shaders
// are reloaded and the light manager is not reset.
//
// We should look to fix this by clearing the table.
// Update the forward shading light constants.
_update4LightConsts( sgData,
lsc->mLightPositionSC,
lsc->mLightDiffuseSC,
lsc->mLightAmbientSC,
lsc->mLightInvRadiusSqSC,
lsc->mLightSpotDirSC,
lsc->mLightSpotAngleSC,
lsc->mLightSpotFalloffSC,
shaderConsts );
if ( lsm && light->getCastShadows() )
{
if ( lsc->mWorldToLightProjSC->isValid() )
shaderConsts->set( lsc->mWorldToLightProjSC,
lsm->getWorldToLightProj(),
lsc->mWorldToLightProjSC->getType() );
if ( lsc->mViewToLightProjSC->isValid() )
{
// TODO: Should probably cache these results and
// not do this mul here on every material that needs
// this transform.
shaderConsts->set( lsc->mViewToLightProjSC,
lsm->getWorldToLightProj() * state->getCameraTransform(),
lsc->mViewToLightProjSC->getType() );
}
shaderConsts->setSafe( lsc->mShadowMapSizeSC, 1.0f / (F32)lsm->getTexSize() );
// Do this last so that overrides can properly override parameters previously set
lsm->setShaderParameters(shaderConsts, lsc);
}
else
{
if ( lsc->mViewToLightProjSC->isValid() )
{
// TODO: Should probably cache these results and
// not do this mul here on every material that needs
// this transform.
MatrixF proj;
light->getWorldToLightProj( &proj );
shaderConsts->set( lsc->mViewToLightProjSC,
proj * state->getCameraTransform(),
lsc->mViewToLightProjSC->getType() );
}
}
}