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[Perf] (MG_State, MG_Backend/DirectGLES): skip never-touched buffer bind points via high-water mark; SyncNeccessaryBuffers 15.7% -> 4.2%

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swung0x48
2026-07-12 04:31:34 -04:00
parent 527e229ac8
commit 340449b77e
5 changed files with 29 additions and 1 deletions
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MobileGL/MG_State/GLState/BufferState/BufferState.cpp
+3
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@@ -13,6 +13,9 @@ namespace MobileGL::MG_State::GLState {
for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
m_bindingSlots[i] = BindingSlot<BufferObject>(GlobalBufferTargets[i]);
}
for (SizeT i = 0; i < m_touchedBindPointCount.size(); ++i) {
m_touchedBindPointCount[i] = 0;
}
}
const SharedPtr<BufferObject>& BufferState::GetBufferObject(Uint index) {
MobileGL/MG_State/GLState/BufferState/BufferState.h
+15
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@@ -36,6 +36,20 @@ namespace MobileGL::MG_State::GLState {
auto index = std::distance(BufferBindPointTargets.begin(), it);
return m_bufferBindPointTargets[index].size();
}
// High-water mark of app-touched binding points per target (highest index + 1, 0 if none).
// Lets the backend skip syncing the never-touched tail of the fixed 36-point array each draw.
void TouchBindPoint(const BufferTarget target, Uint index) {
auto it = std::find(BufferBindPointTargets.begin(), BufferBindPointTargets.end(), target);
if (it == BufferBindPointTargets.end()) return;
auto slot = std::distance(BufferBindPointTargets.begin(), it);
if (static_cast<SizeT>(index) + 1 > m_touchedBindPointCount[slot])
m_touchedBindPointCount[slot] = static_cast<SizeT>(index) + 1;
}
SizeT GetTouchedBindPointCount(const BufferTarget target) const {
auto it = std::find(BufferBindPointTargets.begin(), BufferBindPointTargets.end(), target);
if (it == BufferBindPointTargets.end()) return 0;
return m_touchedBindPointCount[std::distance(BufferBindPointTargets.begin(), it)];
}
void MarkBufferObjectForDeletion(Uint index);
Bool ValidateName(Uint index) const;
Bool ValidateBufferObject(Uint index) const;
@@ -48,5 +62,6 @@ namespace MobileGL::MG_State::GLState {
// For glBindBufferBase / glBindBufferRange
Array<Array<BindingSlotRange1D<BufferObject>, BufferBindingPointCount>, BufferBindPointTargets.size()>
m_bufferBindPointTargets;
Array<SizeT, BufferBindPointTargets.size()> m_touchedBindPointCount;
};
} // namespace MobileGL::MG_State::GLState
MobileGL/MG_State/GLState/Core.h
+6
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@@ -67,6 +67,12 @@ namespace MobileGL {
constexpr SizeT GetBufferBindingPointCount(BufferTarget target) const {
return m_bufferState.GetBindingPointCount(target);
}
void TouchBufferBindingPoint(BufferTarget target, Uint index) {
m_bufferState.TouchBindPoint(target, index);
}
SizeT GetTouchedBufferBindingPointCount(BufferTarget target) const {
return m_bufferState.GetTouchedBindPointCount(target);
}
const SharedPtr<BufferObject>& CreateBufferObject(Uint index);
void MarkBufferObjectForDeletion(Uint index);
Bool ValidateBufferName(Uint index) const;