void LightingParser_ResolveGBuffer(
Metal::DeviceContext& context, LightingParserContext& parserContext,
MainTargetsBox& mainTargets, LightingResolveTextureBox& lightingResTargets)
{
Metal::GPUProfiler::DebugAnnotation anno(context, L"ResolveGBuffer");
const bool doSampleFrequencyOptimisation = Tweakable("SampleFrequencyOptimisation", true);
LightingResolveContext lightingResolveContext(mainTargets);
const unsigned samplingCount = lightingResolveContext.GetSamplingCount();
const bool useMsaaSamplers = lightingResolveContext.UseMsaaSamplers();
auto& resolveRes = Techniques::FindCachedBoxDep2<LightingResolveResources>(samplingCount);
//
// Our inputs is the prepared gbuffer
// -- we resolve the lighting and write out a "lighting resolve texture"
//
if (doSampleFrequencyOptimisation && samplingCount>1) {
context.Bind(resolveRes._alwaysWriteToStencil, 0xff);
// todo -- instead of clearing the stencil every time, how
// about doing a progressive walk through all of the bits!
context.ClearStencil(mainTargets._secondaryDepthBuffer, 0);
context.Bind(ResourceList<Metal::RenderTargetView, 0>(), &mainTargets._secondaryDepthBuffer);
context.BindPS(MakeResourceList(mainTargets._msaaDepthBufferSRV, mainTargets._gbufferRTVsSRV[1]));
SetupVertexGeneratorShader(context);
CATCH_ASSETS_BEGIN
context.Bind(*resolveRes._perSampleMask);
context.Draw(4);
CATCH_ASSETS_END(parserContext)
}
unsigned LightingParser_BindLightResolveResources(
Metal::DeviceContext& context,
LightingParserContext& parserContext)
{
// bind resources and constants that are required for lighting resolve operations
// these are needed in both deferred and forward shading modes... But they are
// bound at different times in different modes
CATCH_ASSETS_BEGIN
unsigned skyTextureProjection = SkyTextureParts(parserContext.GetSceneParser()->GetGlobalLightingDesc()).BindPS(context, 11);
context.BindPS(MakeResourceList(10, ::Assets::GetAssetDep<RenderCore::Assets::DeferredShaderResource>("game/xleres/DefaultResources/balanced_noise.dds:LT").GetShaderResource()));
context.BindPS(MakeResourceList(16, ::Assets::GetAssetDep<RenderCore::Assets::DeferredShaderResource>("game/xleres/DefaultResources/GGXTable.dds:LT").GetShaderResource()));
context.BindPS(MakeResourceList(9, Metal::ConstantBuffer(&GlobalMaterialOverride, sizeof(GlobalMaterialOverride))));
return skyTextureProjection;
CATCH_ASSETS_END(parserContext)
return 0;
}
} CATCH(...) {
savedTargets.ResetToOldTargets(metalContext);
throw;
} CATCH_END
savedTargets.ResetToOldTargets(metalContext);
}
//
// Now we have to read-back the results from the cube map,
// and weight by the solid angle. Let's do this with a
// compute shader. We'll split each face into 16 squares, and
// assign a separate thread to each. The output will be a 4x4x5
// texture of floats
//
metalContext.BindCS(MakeResourceList(_pimpl->_cubeSRV));
metalContext.BindCS(MakeResourceList(_pimpl->_miniUAV));
// metalContext.Bind(*_pimpl->_stepDownShader);
metalContext.Bind(
::Assets::GetAssetDep<Metal::ComputeShader>(
"game/xleres/toolshelper/aogenprocess.sh:CubeMapStepDown:cs_*"));
metalContext.Dispatch(1u);
metalContext.UnbindCS<Metal::ShaderResourceView>(0, 1);
metalContext.UnbindCS<Metal::UnorderedAccessView>(0, 1);
auto& bufferUploads = RenderCore::Assets::Services::GetBufferUploads();
auto readback = bufferUploads.Resource_ReadBack(*_pimpl->_miniLocator);
#if defined(GEN_AO_DEBUG)
