[Feat] (MG_Backend/DirectVulkan): VkBufferManager

2026-09-12 22:28:32 +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 +1,85 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkBufferManager.cpp
+// 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
+
+#include "VkBufferManager.h"
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+    Bool VkBufferManager::Initialize(const VkBufferManagerInitInfo& initInfo) {
+        Shutdown();
+
+        MOBILEGL_ASSERT(initInfo.allocator != nullptr, "VkBufferManager::Initialize requires valid allocator");
+        MOBILEGL_ASSERT(initInfo.frameCount > 0, "VkBufferManager::Initialize requires non-zero frame count");
+
+        m_initInfo = initInfo;
+        return InitializeTransientArenas();
+    }
+
+    void VkBufferManager::Shutdown() {
+        m_vertexUploadArena.Shutdown();
+        m_indexUploadArena.Shutdown();
+        m_initInfo = {};
+    }
+
+    Bool VkBufferManager::RecreateTransientArenas(Uint32 frameCount) {
+        MOBILEGL_ASSERT(m_initInfo.allocator != nullptr, "VkBufferManager::RecreateTransientArenas requires initialized manager");
+        MOBILEGL_ASSERT(frameCount > 0, "VkBufferManager::RecreateTransientArenas requires non-zero frame count");
+
+        m_vertexUploadArena.Shutdown();
+        m_indexUploadArena.Shutdown();
+        m_initInfo.frameCount = frameCount;
+        return InitializeTransientArenas();
+    }
+
+    void VkBufferManager::BeginFrame(Uint32 frameIndex) {
+        m_vertexUploadArena.BeginFrame(frameIndex);
+        m_indexUploadArena.BeginFrame(frameIndex);
+    }
+
+    Bool VkBufferManager::UploadTransient(TransientBufferKind kind, Uint32 frameIndex, const void* data,
+                                          VkDeviceSize size, VkDeviceSize alignment, BufferSlice& outSlice) {
+        switch (kind) {
+        case TransientBufferKind::Vertex:
+            return m_vertexUploadArena.Upload(frameIndex, data, size, alignment, outSlice);
+        case TransientBufferKind::Index:
+            return m_indexUploadArena.Upload(frameIndex, data, size, alignment, outSlice);
+        default:
+            return false;
+        }
+    }
+
+    Bool VkBufferManager::InitializeTransientArenas() {
+        Bool ok = m_vertexUploadArena.Initialize({
+            .allocator = m_initInfo.allocator,
+            .frameCount = m_initInfo.frameCount,
+            .usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
+            .memoryUsage = m_initInfo.transientMemoryUsage,
+            .allocationFlags = m_initInfo.transientAllocationFlags,
+            .minBufferSize = m_initInfo.minVertexUploadBytes,
+            .persistentlyMapped = m_initInfo.transientPersistentMapping,
+        });
+        if (!ok) {
+            return false;
+        }
+
+        ok = m_indexUploadArena.Initialize({
+            .allocator = m_initInfo.allocator,
+            .frameCount = m_initInfo.frameCount,
+            .usage = VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
+            .memoryUsage = m_initInfo.transientMemoryUsage,
+            .allocationFlags = m_initInfo.transientAllocationFlags,
+            .minBufferSize = m_initInfo.minIndexUploadBytes,
+            .persistentlyMapped = m_initInfo.transientPersistentMapping,
+        });
+        if (!ok) {
+            m_vertexUploadArena.Shutdown();
+            return false;
+        }
+
+        return true;
+    }
+} // namespace MobileGL::MG_Backend::DirectVulkan