void ShadowVolumeRenderPass::Draw(Camera * camera)
{
// Draw all layers with their materials
uint32 size = (uint32)renderLayers.size();
DVASSERT(size == 1);
RenderLayer * shadowVolumesLayer = renderLayers[0];
//Vector<LightNode*> & lights = renderSystem->GetLights();
uint32 renderBatchCount = shadowVolumesLayer->GetRenderBatchCount();
if(RenderManager::Instance()->GetOptions()->IsOptionEnabled(RenderOptions::SHADOWVOLUME_DRAW)
&& renderBatchCount > 0)
{
if(!shadowRect)
{
shadowRect = ShadowRect::Create();
}
//2nd pass
RenderManager::Instance()->RemoveState(RenderStateBlock::STATE_CULL);
RenderManager::Instance()->RemoveState(RenderStateBlock::STATE_DEPTH_WRITE);
RenderManager::Instance()->AppendState(RenderStateBlock::STATE_BLEND);
RenderManager::Instance()->SetBlendMode(BLEND_ZERO, BLEND_ONE);
RenderManager::Instance()->ClearStencilBuffer(0);
RenderManager::Instance()->AppendState(RenderStateBlock::STATE_STENCIL_TEST);
RenderManager::State()->SetStencilFunc(FACE_FRONT_AND_BACK, CMP_ALWAYS);
RenderManager::State()->SetStencilRef(1);
RenderManager::State()->SetStencilMask(0xFFFFFFFF);
RenderManager::State()->SetStencilPass(FACE_FRONT, STENCILOP_KEEP);
RenderManager::State()->SetStencilFail(FACE_FRONT, STENCILOP_KEEP);
RenderManager::State()->SetStencilZFail(FACE_FRONT, STENCILOP_DECR_WRAP);
RenderManager::State()->SetStencilPass(FACE_BACK, STENCILOP_KEEP);
RenderManager::State()->SetStencilFail(FACE_BACK, STENCILOP_KEEP);
RenderManager::State()->SetStencilZFail(FACE_BACK, STENCILOP_INCR_WRAP);
RenderManager::Instance()->FlushState();
shadowVolumesLayer->Draw(camera);
//3rd pass
RenderManager::Instance()->RemoveState(RenderStateBlock::STATE_CULL);
RenderManager::Instance()->RemoveState(RenderStateBlock::STATE_DEPTH_TEST);
RenderManager::State()->SetStencilRef(0);
RenderManager::State()->SetStencilFunc(FACE_FRONT_AND_BACK, CMP_NOTEQUAL);
RenderManager::State()->SetStencilPass(FACE_FRONT_AND_BACK, STENCILOP_KEEP);
RenderManager::State()->SetStencilFail(FACE_FRONT_AND_BACK, STENCILOP_KEEP);
RenderManager::State()->SetStencilZFail(FACE_FRONT_AND_BACK, STENCILOP_KEEP);
RenderManager::Instance()->SetBlendMode(BLEND_SRC_ALPHA, BLEND_ONE_MINUS_SRC_ALPHA);
shadowRect->Draw();
}
}
void ShadowVolumeRenderPass::Draw(Camera * camera)
{
// Draw all layers with their materials
uint32 size = (uint32)renderLayers.size();
DVASSERT(size == 1);
RenderLayer * shadowVolumesLayer = renderLayers[0];
//Vector<LightNode*> & lights = renderSystem->GetLights();
uint32 renderBatchCount = shadowVolumesLayer->GetRenderBatchCount();
if(RenderManager::Instance()->GetOptions()->IsOptionEnabled(RenderOptions::SHADOWVOLUME_DRAW)
&& renderBatchCount > 0)
{
eBlendMode sFactor = RenderManager::Instance()->GetSrcBlend();
eBlendMode dFactor = RenderManager::Instance()->GetDestBlend();
//2nd pass
RenderManager::Instance()->RemoveState(RenderState::STATE_CULL);
RenderManager::Instance()->RemoveState(RenderState::STATE_DEPTH_WRITE);
RenderManager::Instance()->AppendState(RenderState::STATE_BLEND);
RenderManager::Instance()->SetBlendMode(BLEND_ZERO, BLEND_ONE);
//RenderManager::Instance()->ClearStencilBuffer(0); //moved to per-frame clear
RenderManager::Instance()->AppendState(RenderState::STATE_STENCIL_TEST);
RenderManager::State()->SetStencilFunc(FACE_FRONT_AND_BACK, CMP_ALWAYS);
RenderManager::State()->SetStencilRef(1);
RenderManager::State()->SetStencilMask(0x0000000F);
RenderManager::State()->SetStencilPass(FACE_FRONT, STENCILOP_KEEP);
RenderManager::State()->SetStencilFail(FACE_FRONT, STENCILOP_KEEP);
RenderManager::State()->SetStencilZFail(FACE_FRONT, STENCILOP_DECR_WRAP);
RenderManager::State()->SetStencilPass(FACE_BACK, STENCILOP_KEEP);
RenderManager::State()->SetStencilFail(FACE_BACK, STENCILOP_KEEP);
RenderManager::State()->SetStencilZFail(FACE_BACK, STENCILOP_INCR_WRAP);
RenderManager::Instance()->FlushState();
shadowVolumesLayer->Draw(camera);
//3rd pass
RenderManager::Instance()->RemoveState(RenderState::STATE_CULL);
RenderManager::Instance()->RemoveState(RenderState::STATE_DEPTH_TEST);
RenderManager::State()->SetStencilRef(0);
RenderManager::State()->SetStencilFunc(FACE_FRONT_AND_BACK, CMP_NOTEQUAL);
RenderManager::State()->SetStencilPass(FACE_FRONT_AND_BACK, STENCILOP_KEEP);
RenderManager::State()->SetStencilFail(FACE_FRONT_AND_BACK, STENCILOP_KEEP);
RenderManager::State()->SetStencilZFail(FACE_FRONT_AND_BACK, STENCILOP_KEEP);
switch(blendMode)
{
case MODE_BLEND_ALPHA:
RenderManager::Instance()->SetBlendMode(BLEND_SRC_ALPHA, BLEND_ONE_MINUS_SRC_ALPHA);
break;
case MODE_BLEND_MULTIPLY:
RenderManager::Instance()->SetBlendMode(BLEND_DST_COLOR, BLEND_ZERO);
break;
default:
break;
}
shadowRect->Draw();
RenderManager::Instance()->SetBlendMode(sFactor, dFactor);
}
}
