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[Perf] (MG_Backend/DirectGLES): dedup per-draw indexed UBO/SSBO binds with a shadow cache; BindCurrentProgramWithResources 5.1% -> 3.1%

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swung0x48
2026-07-12 06:32:18 -04:00
parent 25395a9f9a
commit ad9ee99521
3 changed files with 63 additions and 13 deletions
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MobileGL/MG_Backend/DirectGLES/Managers.cpp
+41
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@@ -749,6 +749,47 @@ namespace MobileGL::MG_Backend::DirectGLES {
g_boundArrayBufferKnown = false;
}
namespace {
// Shadow of the GL indexed buffer bindings so redundant glBindBufferBase/Range
// (same index + id + range) are skipped. isBase distinguishes a whole-buffer
// base bind from a sub-range bind. Fresh/reset context: every point is base(0)
// == unbound, which matches the GL default.
struct IndexedBufferBinding {
Uint id = 0;
GLintptr offset = 0;
GLsizeiptr size = 0;
Bool isBase = true;
};
constexpr SizeT kMaxIndexedBufferBindings = 64;
IndexedBufferBinding g_indexedUBOBindings[kMaxIndexedBufferBindings];
IndexedBufferBinding g_indexedSSBOBindings[kMaxIndexedBufferBindings];
IndexedBufferBinding* IndexedBindingShadow(GLenum glTarget, Uint index) {
if (index >= kMaxIndexedBufferBindings) return nullptr; // out of range: never cache
if (glTarget == GL_UNIFORM_BUFFER) return &g_indexedUBOBindings[index];
if (glTarget == GL_SHADER_STORAGE_BUFFER) return &g_indexedSSBOBindings[index];
return nullptr;
}
} // namespace
void BindBufferBaseCached(GLenum glTarget, Uint index, Uint id) {
auto* s = IndexedBindingShadow(glTarget, index);
if (s && s->isBase && s->id == id) return;
g_GLESFuncs.glBindBufferBase(glTarget, index, id);
if (s) *s = {id, 0, 0, true};
}
void BindBufferRangeCached(GLenum glTarget, Uint index, Uint id, GLintptr offset, GLsizeiptr size) {
auto* s = IndexedBindingShadow(glTarget, index);
if (s && !s->isBase && s->id == id && s->offset == offset && s->size == size) return;
g_GLESFuncs.glBindBufferRange(glTarget, index, id, offset, size);
if (s) *s = {id, offset, size, false};
}
void InvalidateIndexedBufferBindingCache() {
for (auto& b : g_indexedUBOBindings) b = {};
for (auto& b : g_indexedSSBOBindings) b = {};
}
void TrimBufferPool() {
const std::lock_guard<std::mutex> lock(g_poolMutex);
if (g_pooledBytes <= kMaxPoolBytes) return;