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Optimize decals rendering with depth test

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#3599
This commit is contained in:
Wojtek Figat
2025-08-14 13:04:57 +02:00
parent 8a73d79936
commit cb92a2b8cb
2 changed files with 15 additions and 14 deletions
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20
Source/Engine/Graphics/Materials/DecalMaterialShader.cpp
View File

@@ -47,7 +47,9 @@ void DecalMaterialShader::Bind(BindParameters& params)
MaterialParams::Bind(params.ParamsLink, bindMeta);
// Decals use depth buffer to draw on top of the objects
context->BindSR(0, GET_TEXTURE_VIEW_SAFE(params.RenderContext.Buffers->DepthBuffer));
GPUTexture* depthBuffer = params.RenderContext.Buffers->DepthBuffer;
GPUTextureView* depthBufferView = EnumHasAnyFlags(depthBuffer->Flags(), GPUTextureFlags::ReadOnlyDepthView) ? depthBuffer->ViewReadOnlyDepth() : depthBuffer->View();
context->BindSR(0, depthBufferView);
// Setup material constants
{
@@ -90,16 +92,20 @@ void DecalMaterialShader::Unload()
bool DecalMaterialShader::Load()
{
GPUPipelineState::Description psDesc0 = GPUPipelineState::Description::DefaultNoDepth;
psDesc0.VS = _shader->GetVS("VS_Decal");
psDesc0.VS = _shader->GetVS("VS_Decal"); // TODO: move VS_Decal to be shared (eg. in GBuffer.shader)
if (psDesc0.VS == nullptr)
return true;
psDesc0.PS = _shader->GetPS("PS_Decal");
psDesc0.CullMode = CullMode::Normal;
if (GPUDevice::Instance->Limits.HasReadOnlyDepth)
{
psDesc0.DepthEnable = true;
psDesc0.DepthWriteEnable = false;
}
switch (_info.DecalBlendingMode)
{
case MaterialDecalBlendingMode::Translucent:
{
psDesc0.BlendMode.BlendEnable = true;
psDesc0.BlendMode.SrcBlend = BlendingMode::Blend::SrcAlpha;
psDesc0.BlendMode.DestBlend = BlendingMode::Blend::InvSrcAlpha;
@@ -107,9 +113,7 @@ bool DecalMaterialShader::Load()
psDesc0.BlendMode.DestBlendAlpha = BlendingMode::Blend::One;
psDesc0.BlendMode.RenderTargetWriteMask = BlendingMode::ColorWrite::RGB;
break;
}
case MaterialDecalBlendingMode::Stain:
{
psDesc0.BlendMode.BlendEnable = true;
psDesc0.BlendMode.SrcBlend = BlendingMode::Blend::DestColor;
psDesc0.BlendMode.DestBlend = BlendingMode::Blend::InvSrcAlpha;
@@ -117,9 +121,7 @@ bool DecalMaterialShader::Load()
psDesc0.BlendMode.DestBlendAlpha = BlendingMode::Blend::One;
psDesc0.BlendMode.RenderTargetWriteMask = BlendingMode::ColorWrite::RGB;
break;
}
case MaterialDecalBlendingMode::Normal:
{
psDesc0.BlendMode.BlendEnable = true;
psDesc0.BlendMode.SrcBlend = BlendingMode::Blend::SrcAlpha;
psDesc0.BlendMode.DestBlend = BlendingMode::Blend::InvSrcAlpha;
@@ -127,13 +129,10 @@ bool DecalMaterialShader::Load()
psDesc0.BlendMode.DestBlendAlpha = BlendingMode::Blend::One;
psDesc0.BlendMode.RenderTargetWriteMask = BlendingMode::ColorWrite::RGB;
break;
}
case MaterialDecalBlendingMode::Emissive:
{
psDesc0.BlendMode = BlendingMode::Additive;
break;
}
}
_cache.Outside = GPUDevice::Instance->CreatePipelineState();
if (_cache.Outside->Init(psDesc0))
@@ -143,6 +142,7 @@ bool DecalMaterialShader::Load()
}
psDesc0.CullMode = CullMode::Inverted;
psDesc0.DepthEnable = false;
_cache.Inside = GPUDevice::Instance->CreatePipelineState();
if (_cache.Inside->Init(psDesc0))
{

9
Source/Engine/Renderer/GBufferPass.cpp
View File

@@ -434,6 +434,7 @@ void GBufferPass::DrawDecals(RenderContext& renderContext, GPUTextureView* light
PROFILE_GPU_CPU("Decals");
auto context = GPUDevice::Instance->GetMainContext();
auto buffers = renderContext.Buffers;
GPUTextureView* depthBuffer = EnumHasAnyFlags(buffers->DepthBuffer->Flags(), GPUTextureFlags::ReadOnlyDepthView) ? buffers->DepthBuffer->ViewReadOnlyDepth() : nullptr;
// Sort decals from the lowest order to the highest order
Sorting::QuickSort(decals.Get(), decals.Count(), &SortDecal);
@@ -484,22 +485,22 @@ void GBufferPass::DrawDecals(RenderContext& renderContext, GPUTextureView* light
count++;
targetBuffers[2] = buffers->GBuffer1->View();
}
context->SetRenderTarget(nullptr, ToSpan(targetBuffers, count));
context->SetRenderTarget(depthBuffer, ToSpan(targetBuffers, count));
break;
}
case MaterialDecalBlendingMode::Stain:
{
context->SetRenderTarget(buffers->GBuffer0->View());
context->SetRenderTarget(depthBuffer, buffers->GBuffer0->View());
break;
}
case MaterialDecalBlendingMode::Normal:
{
context->SetRenderTarget(buffers->GBuffer1->View());
context->SetRenderTarget(depthBuffer, buffers->GBuffer1->View());
break;
}
case MaterialDecalBlendingMode::Emissive:
{
context->SetRenderTarget(lightBuffer);
context->SetRenderTarget(depthBuffer, lightBuffer);
break;
}
}