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[Perf] (DirectVulkan): bound vertex-stream conversion by the draw's real fetch range, reuse cached prefixes, pin cached source buffers, and stop repacking client arrays for pointer alignment

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swung0x48
2026-07-20 02:36:25 -04:00
parent 4658536652
commit f0cc07c937
3 changed files with 168 additions and 32 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
+20 -2
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@@ -51,6 +51,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
Uint32 instanceCount = 1;
Uint32 firstVertex = 0;
Uint32 firstInstance = 0;
// Indexed-draw metadata for bounding vertex-stream conversion. baseVertex is the
// draw's base-vertex offset; indexRangeIsExactView is true only when the draw
// fetches exactly the indices its IndexBufferView describes (direct DrawElements;
// multi/indirect forms leave it false because the CPU cannot bound their ranges).
Int32 baseVertex = 0;
Bool indexRangeIsExactView = false;
};
struct DrawIndexedCmdParam {
@@ -488,7 +494,18 @@ namespace MobileGL::MG_Backend::DirectVulkan {
}
};
UnorderedMap<ConvertedVertexStreamKey, BufferSlice, ConvertedVertexStreamKeyHash>
struct ConvertedVertexStream {
BufferSlice slice;
// Number of source elements the cached slice covers. A draw needing a prefix of
// this range reuses the slice (converted streams are tightly packed); a draw
// needing more reconverts and replaces the entry, so per (buffer, layout) a
// frame converts at most the largest range any draw asked for.
SizeT elementCount = 0;
// Pins the source buffer for the frame so its heap address cannot be reused by
// a new BufferObject while this pointer-keyed entry is alive.
SharedPtr<const MG_State::GLState::BufferObject> sourcePin;
};
UnorderedMap<ConvertedVertexStreamKey, ConvertedVertexStream, ConvertedVertexStreamKeyHash>
m_convertedVertexStreams;
void CreateInstance();
@@ -519,7 +536,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
Bool UploadAndBindVertexBuffers(VkCommandBuffer commandBuffer, const MG_State::GLState::VertexArrayObject& vao,
const ProgramFactory::VkProgramObject& programObj,
const DrawCmdParam& drawParams, Bool indexedDraw);
const DrawCmdParam& drawParams,
const IndexBufferView* pIndexBufferView);
Bool UploadAndBindIndexBuffer(FrameContext::FrameData& frame,
const MG_State::GLState::VertexArrayObject& vao,
const IndexBufferView* pIndexBufferView = nullptr);