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Refactor shadows rendering to use Shadow Map Atlas

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This commit is contained in:
Wojtek Figat
2024-04-04 12:54:07 +02:00
parent 017def29d4
commit 61323f8526
31 changed files with 1115 additions and 1826 deletions
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26
Source/Engine/Graphics/Materials/MaterialShaderFeatures.cpp
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@@ -21,7 +21,8 @@ void ForwardShadingFeature::Bind(MaterialShader::BindParameters& params, Span<by
ASSERT_LOW_LAYER(cb.Length() >= sizeof(Data));
const int32 envProbeShaderRegisterIndex = srv + 0;
const int32 skyLightShaderRegisterIndex = srv + 1;
const int32 dirLightShaderRegisterIndex = srv + 2;
const int32 shadowsBufferRegisterIndex = srv + 2;
const int32 shadowMapShaderRegisterIndex = srv + 3;
const bool canUseShadow = view.Pass != DrawPass::Depth;
// Set fog input
@@ -39,24 +40,19 @@ void ForwardShadingFeature::Bind(MaterialShader::BindParameters& params, Span<by
if (cache->DirectionalLights.HasItems())
{
const auto& dirLight = cache->DirectionalLights.First();
const auto shadowPass = ShadowsPass::Instance();
const bool useShadow = shadowPass->LastDirLightIndex == 0 && canUseShadow;
if (useShadow)
{
data.DirectionalLightShadow = shadowPass->LastDirLight;
params.GPUContext->BindSR(dirLightShaderRegisterIndex, shadowPass->LastDirLightShadowMap);
}
else
{
params.GPUContext->UnBindSR(dirLightShaderRegisterIndex);
}
GPUTexture* shadowMapAtlas;
GPUBufferView* shadowsBuffer;
ShadowsPass::GetShadowAtlas(params.RenderContext.Buffers, shadowMapAtlas, shadowsBuffer);
const bool useShadow = shadowMapAtlas && canUseShadow && dirLight.HasShadow;
dirLight.SetShaderData(data.DirectionalLight, useShadow);
params.GPUContext->BindSR(shadowsBufferRegisterIndex, shadowsBuffer);
params.GPUContext->BindSR(shadowMapShaderRegisterIndex, shadowMapAtlas);
}
else
{
data.DirectionalLight.Color = Float3::Zero;
data.DirectionalLight.CastShadows = 0.0f;
params.GPUContext->UnBindSR(dirLightShaderRegisterIndex);
Platform::MemoryClear(&data.DirectionalLight, sizeof(data.DirectionalLight));
params.GPUContext->UnBindSR(shadowsBufferRegisterIndex);
params.GPUContext->UnBindSR(shadowMapShaderRegisterIndex);
}
// Set sky light