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[Perf] (MG_Backend/DirectVulkan): skip per-draw render-pass hash when framebuffer state unchanged; SetupDraw 60%->54%, fps 96->109

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swung0x48
2026-07-12 08:18:37 -04:00
parent ad9ee99521
commit 542e50be33
4 changed files with 61 additions and 0 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VkRenderPassManager.h
+18
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@@ -179,6 +179,24 @@ namespace MobileGL::MG_Backend::DirectVulkan {
SwapchainObject& m_swapchainObject;
UnorderedMap<Uint64, RenderPassEntry> m_renderPasses;
// Bumped whenever a renderbuffer VkImage is (re)created; together with the texture
// manager's image epoch this invalidates the render-pass fast path on any attachment
// image recreation.
Uint64 m_renderbufferImageEpoch = 1;
// Per-draw fast-path memo for GetOrCreateRenderPass (dirty-flag state tracking): when the
// framebuffer state is provably unchanged since the last resolution, the active render pass
// is reused WITHOUT recomputing the expensive per-draw hash. Invalidated by FBO switch /
// version change, swapchain rotation, any attachment image recreation (the two epochs),
// or a pending clear. Portable to Vulkan 1.1 (no dynamic_rendering / imageless FB needed).
Bool m_rpFastValid = false;
const MG_State::GLState::FramebufferObject* m_rpFastFbo = nullptr;
Uint16 m_rpFastFboVersion = 0;
Uint32 m_rpFastSwapchainIndex = 0;
Uint64 m_rpFastTexEpoch = 0;
Uint64 m_rpFastRbEpoch = 0;
Uint64 m_rpFastRenderPassHash = 0;
struct RenderbufferResource {
WeakPtr<MG_State::GLState::RenderbufferObject> renderbuffer;
VkImage image = VK_NULL_HANDLE;