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Implement indirect draws in the Maxwell 3D interconnect

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These will be used by the HLE indirect draw macro to perform indirect draws without waiting for GPU idle.
This commit is contained in:
Billy Laws 2023-02-04 22:32:36 +00:00
parent 49cd2a71cc
commit 7e1c58accc
2 changed files with 66 additions and 0 deletions
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63
app/src/main/cpp/skyline/gpu/interconnect/maxwell_3d/maxwell_3d.cpp
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@ -352,4 +352,67 @@ namespace skyline::gpu::interconnect::maxwell3d {
}, scissor, activeDescriptorSetSampledImages, {}, activeState.GetColorAttachments(), activeState.GetDepthAttachment(), !ctx.gpu.traits.quirks.relaxedRenderPassCompatibility, srcStageMask, dstStageMask);
ctx.executor.AddCheckpoint("After draw");
}
void Maxwell3D::DrawIndirect(engine::DrawTopology topology, bool transformFeedbackEnable, bool indexed, span<u8> indirectBuffer, u32 count, u32 stride) {
if (!count)
return;
TRACE_EVENT("gpu", "Indirect Draw", "buffer", reinterpret_cast<uintptr_t>(indirectBuffer.data()));
StateUpdateBuilder builder{*ctx.executor.allocator};
vk::PipelineStageFlags srcStageMask{}, dstStageMask{};
PrepareDraw(builder, topology, indexed, true, 0, 0, srcStageMask, dstStageMask);
if (directState.inputAssembly.NeedsQuadConversion())
throw exception("Quad conversion is not supported for indirect draws!");
if (indirectBufferView)
indirectBufferView = indirectBufferView.GetBuffer()->TryGetView(indirectBuffer);
if (!indirectBufferView)
indirectBufferView = ctx.gpu.buffer.FindOrCreate(indirectBuffer, ctx.executor.tag, [this](std::shared_ptr<Buffer> buffer, ContextLock<Buffer> &&lock) {
ctx.executor.AttachLockedBuffer(buffer, std::move(lock));
});
indirectBufferView.GetBuffer()->BlockSequencedCpuBackingWrites();
auto stateUpdater{builder.Build()};
/**
* @brief Struct that can be linearly allocated, holding all state for the draw to avoid a dynamic allocation with lambda captures
*/
struct DrawParams {
StateUpdater stateUpdater;
BufferView indirectBuffer;
u32 count;
u32 stride;
bool indexed;
bool transformFeedbackEnable;
};
auto *drawParams{ctx.executor.allocator->EmplaceUntracked<DrawParams>(DrawParams{stateUpdater,
indirectBufferView,
count, stride, indexed,
ctx.gpu.traits.supportsTransformFeedback ? transformFeedbackEnable : false})};
auto scissor{GetDrawScissor()};
constantBuffers.ResetQuickBind();
ctx.executor.AddCheckpoint("Before indirect draw");
ctx.executor.AddSubpass([drawParams](vk::raii::CommandBuffer &commandBuffer, const std::shared_ptr<FenceCycle> &, GPU &gpu, vk::RenderPass, u32) {
drawParams->stateUpdater.RecordAll(gpu, commandBuffer);
if (drawParams->transformFeedbackEnable)
commandBuffer.beginTransformFeedbackEXT(0, {}, {});
auto indirectBinding{drawParams->indirectBuffer.GetBinding(gpu)};
if (drawParams->indexed)
commandBuffer.drawIndexedIndirect(indirectBinding.buffer, indirectBinding.offset, drawParams->count, drawParams->stride);
else
commandBuffer.drawIndirect(indirectBinding.buffer, indirectBinding.offset, drawParams->count, drawParams->stride);
if (drawParams->transformFeedbackEnable)
commandBuffer.endTransformFeedbackEXT(0, {}, {});
}, scissor, activeDescriptorSetSampledImages, {}, activeState.GetColorAttachments(), activeState.GetDepthAttachment(), !ctx.gpu.traits.quirks.relaxedRenderPassCompatibility, srcStageMask, dstStageMask);
ctx.executor.AddCheckpoint("After indirect draw");
}
}

3
app/src/main/cpp/skyline/gpu/interconnect/maxwell_3d/maxwell_3d.h
View File

@ -49,6 +49,7 @@ namespace skyline::gpu::interconnect::maxwell3d {
Textures textures;
std::shared_ptr<memory::Buffer> quadConversionBuffer{};
bool quadConversionBufferAttached{};
BufferView indirectBufferView;
static constexpr size_t DescriptorBatchSize{0x100};
std::shared_ptr<boost::container::static_vector<DescriptorAllocator::ActiveDescriptorSet, DescriptorBatchSize>> attachedDescriptorSets;
@ -102,5 +103,7 @@ namespace skyline::gpu::interconnect::maxwell3d {
void Clear(engine::ClearSurface &clearSurface);
void Draw(engine::DrawTopology topology, bool transformFeedbackEnable, bool indexed, u32 count, u32 first, u32 instanceCount, u32 vertexOffset, u32 firstInstance);
void DrawIndirect(engine::DrawTopology topology, bool transformFeedbackEnable, bool indexed, span<u8> indirectBuffer, u32 count, u32 stride);
};
}