[Feat] (MG_Backend/DirectVulkan): VkBufferManager

2026-09-12 06:08:30 +09:00 · 2026-03-19 17:44:35 +08:00
parent b6ac6c182e
commit f2ab50b84e
6 changed files with 158 additions and 55 deletions
@@ -0,0 +1,51 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkBufferManager.h
+// Copyright (c) 2025-2026 MobileGL-Dev
+// Licensed under the GNU Lesser General Public License v3.0:
+//   https://www.gnu.org/licenses/gpl-3.0.txt
+//   https://www.gnu.org/licenses/lgpl-3.0.txt
+// SPDX-License-Identifier: LGPL-3.0-only
+// End of Source File Header
+
+#pragma once
+
+#include "BufferArena.h"
+#include "../VkIncludes.h"
+#include <Includes.h>
+#include <vk_mem_alloc.h>
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+    enum class TransientBufferKind : Uint8 {
+        Vertex,
+        Index,
+    };
+
+    struct VkBufferManagerInitInfo {
+        VmaAllocator allocator = nullptr;
+        Uint32 frameCount = 0;
+        VkDeviceSize minVertexUploadBytes = 4 * 1024 * 1024;
+        VkDeviceSize minIndexUploadBytes = 1 * 1024 * 1024;
+        VmaMemoryUsage transientMemoryUsage = VMA_MEMORY_USAGE_AUTO;
+        VmaAllocationCreateFlags transientAllocationFlags = VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT;
+        Bool transientPersistentMapping = false;
+    };
+
+    class VkBufferManager {
+    public:
+        Bool Initialize(const VkBufferManagerInitInfo& initInfo);
+        void Shutdown();
+
+        // Recreate all per-frame transient arenas
+        Bool RecreateTransientArenas(Uint32 frameCount);
+        void BeginFrame(Uint32 frameIndex);
+
+        Bool UploadTransient(TransientBufferKind kind, Uint32 frameIndex, const void* data, VkDeviceSize size,
+                             VkDeviceSize alignment, BufferSlice& outSlice);
+
+    private:
+        Bool InitializeTransientArenas();
+
+        VkBufferManagerInitInfo m_initInfo{};
+        BufferArena m_vertexUploadArena;
+        BufferArena m_indexUploadArena;
+    };
+} // namespace MobileGL::MG_Backend::DirectVulkan