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[Perf] (MG_Backend/DirectVulkan): drop redundant per-draw work in UploadAndBindVertexBuffers - pass programObj from SetupDraw, use the VAO attribute's buffer SharedPtr directly instead of re-resolving by external index; 8.5%->6.2%

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swung0x48
2026-07-13 05:21:57 -04:00
parent 7fe5247626
commit 37cd5b42de
2 changed files with 16 additions and 17 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
+15 -17
View File
@@ -2165,11 +2165,11 @@ void main() {
}
Bool VulkanRenderer::UploadAndBindVertexBuffers(
VkCommandBuffer commandBuffer, const MG_State::GLState::VertexArrayObject& vao, const DrawCmdParam& drawParams) {
VkCommandBuffer commandBuffer, const MG_State::GLState::VertexArrayObject& vao,
const ProgramFactory::VkProgramObject& programObj, const DrawCmdParam& drawParams) {
// programObj is resolved once in SetupDraw and passed in; re-resolving it here would repeat
// the GetCurrentProgram + GetOrCreateProgram hash lookup every draw.
auto& vertexInputState = m_vertexInputStateFactory->GetOrCreateVertexInputState(vao);
const auto& program = *MG_State::pGLContext->GetCurrentProgram();
const auto transformFlags = GetShaderTransformFlags(m_swapchainObject.GetPreTransform());
const auto& programObj = m_programFactory->GetOrCreateProgram(program, transformFlags);
const Uint32 activeAttribMask = programObj.activeVertexInputLocationMask;
const Uint32 vertexInputAttribMask = BuildVertexInputAttributeMask(vertexInputState.attributes);
const Uint32 missingAttribMask = activeAttribMask & ~vertexInputAttribMask;
@@ -2181,16 +2181,12 @@ void main() {
vkBuffers.assign(bindingCount, VK_NULL_HANDLE);
vkOffsets.assign(bindingCount, 0);
auto findBufferByKey = [&](SizeT bufferKey) -> const MG_State::GLState::BufferObject* {
auto findBufferByKey = [&](SizeT bufferKey) -> const SharedPtr<MG_State::GLState::BufferObject>* {
const auto& attrs = vao.GetAllAttributes();
for (Uint32 location = 0; location < MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS; ++location) {
const auto& attr = attrs[location];
if (!attr.Buffer) {
continue;
}
const auto* buffer = attr.Buffer.get();
if (reinterpret_cast<SizeT>(buffer) == bufferKey) {
return buffer;
if (attr.Buffer && reinterpret_cast<SizeT>(attr.Buffer.get()) == bufferKey) {
return &attr.Buffer;
}
}
return nullptr;
@@ -2243,11 +2239,13 @@ void main() {
}
const SizeT bufferKey = vertexInputState.bindingBufferKeys[binding];
const MG_State::GLState::BufferObject* sourceBuffer = findBufferByKey(bufferKey);
MOBILEGL_ASSERT(sourceBuffer != nullptr, "UploadAndBindVertexStreams failed to resolve source buffer");
auto sourceBufferShared = MG_State::pGLContext->GetBufferObject(sourceBuffer->GetExternalIndex());
MOBILEGL_ASSERT(sourceBufferShared != nullptr,
"UploadAndBindVertexStreams failed to resolve shared source buffer");
// The VAO attribute already holds the buffer's SharedPtr; use it by reference directly
// instead of re-resolving it from the GL context by external index (a map lookup +
// atomic refcount every binding every draw).
const SharedPtr<MG_State::GLState::BufferObject>* sourceBufferSharedPtr = findBufferByKey(bufferKey);
MOBILEGL_ASSERT(sourceBufferSharedPtr != nullptr && *sourceBufferSharedPtr != nullptr,
"UploadAndBindVertexStreams failed to resolve source buffer");
const auto& sourceBufferShared = *sourceBufferSharedPtr;
BufferSlice slice{};
const SizeT sourceSize = sourceBufferShared->GetSize();
if (ShouldUseTransientVertexIndexBuffer(*sourceBufferShared)) {
@@ -3564,7 +3562,7 @@ void main() {
return false;
}
auto vtxUploadOk = UploadAndBindVertexBuffers(frame.commandBuffer, vao, drawParams);
auto vtxUploadOk = UploadAndBindVertexBuffers(frame.commandBuffer, vao, programObj, drawParams);
if (!vtxUploadOk) {
MGLOG_E("SetupDraw skipped: failed to upload vertex buffers");
return false;
MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
+1
View File
@@ -448,6 +448,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
void DestroyComputePipelines();
Bool UploadAndBindVertexBuffers(VkCommandBuffer commandBuffer, const MG_State::GLState::VertexArrayObject& vao,
const ProgramFactory::VkProgramObject& programObj,
const DrawCmdParam& drawParams);
Bool UploadAndBindIndexBuffer(FrameContext::FrameData& frame,
const MG_State::GLState::VertexArrayObject& vao,