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[Feat] (MG_Backend/DirectVulkan): implement naive transient/resident buffer, and heuristics to downgrade resident buffer to transient

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swung0x48
2026-03-20 17:39:10 +08:00
parent 810b4886c7
commit 0209c5461f
5 changed files with 293 additions and 23 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VkBufferManager.h
+24 -2
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@@ -9,12 +9,13 @@
#pragma once
#include "BufferArena.h"
#include "MG_State/GLState/BufferState/BufferObject.h"
#include "../VkIncludes.h"
#include <Includes.h>
#include <vk_mem_alloc.h>
namespace MobileGL::MG_Backend::DirectVulkan {
enum class TransientBufferKind : Uint8 {
enum class BufferKind : Uint8 {
Vertex,
Index,
Uniform,
@@ -38,13 +39,34 @@ namespace MobileGL::MG_Backend::DirectVulkan {
Bool RecreateTransientArenas(Uint32 frameCount);
void BeginFrame(Uint32 frameIndex);
Bool UploadTransient(TransientBufferKind kind, Uint32 frameIndex, const void* data, VkDeviceSize size,
Bool UploadTransient(BufferKind kind, Uint32 frameIndex, const void* data, VkDeviceSize size,
VkDeviceSize alignment, BufferSlice& outSlice);
Bool SyncResidentBuffer(BufferKind kind, const SharedPtr<MG_State::GLState::BufferObject>& bufferObject,
BufferSlice& outSlice);
void DowngradeResidentBufferToTransient(const SharedPtr<MG_State::GLState::BufferObject>& bufferObject);
private:
struct ResidentBufferEntry {
WeakPtr<MG_State::GLState::BufferObject> aliveRef;
VkBufferObject buffer;
VkDeviceSize size = 0;
VkBufferUsageFlags usage = 0;
};
Bool InitializeTransientArenas();
static VkBufferUsageFlags GetVkBufferUsage(BufferKind kind);
void DeferResidentRelease(VkBufferObject&& buffer);
void CollectDeferredResidentReleases(Uint32 frameIndex);
void CollectResidentGarbageIfNeeded();
void CollectResidentGarbageNow();
void DestroyDeferredResidentReleases();
void DestroyResidentBuffers();
VkBufferManagerInitInfo m_initInfo{};
BufferArena m_transientUploadArena;
UnorderedMap<MG_State::GLState::BufferObject*, ResidentBufferEntry> m_residentBuffers;
Vector<Vector<VkBufferObject>> m_deferredResidentReleases;
Uint32 m_currentFrameIndex = 0;
Uint32 m_residentGcTick = 0;
};
} // namespace MobileGL::MG_Backend::DirectVulkan