chore: import upstream snapshot with attribution

2026-07-13 13:33:03 +08:00
commit 5b57521aa1
8226 changed files with 3425766 additions and 0 deletions
@@ -0,0 +1,69 @@
+//
+//  VulkanBuffer.cpp
+//  MNN
+//
+//  Created by MNN on 2019/01/31.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include "backend/vulkan/component/VulkanBuffer.hpp"
+#include <string.h>
+namespace MNN {
+
+VulkanBuffer::VulkanBuffer(const VulkanMemoryPool& pool, bool separate, size_t size, const void* hostData,
+                           VkBufferUsageFlags usage, VkSharingMode shared, VkFlags requirements_mask)
+    : mPool(pool) {
+    MNN_ASSERT(size > 0);
+    mSize = size;
+    mShared = shared;
+    mBuffer = const_cast<VulkanMemoryPool&>(mPool).allocBuffer(size, usage, shared);
+    mUsage = usage;
+
+    VkMemoryRequirements memReq;
+    mPool.device().getBufferMemoryRequirements(mBuffer, memReq);
+    mMemory = const_cast<VulkanMemoryPool&>(mPool).allocMemory(memReq, requirements_mask, separate);
+    //        FUNC_PRINT(mMemory->type());
+    auto realMem = (VulkanMemory*)mMemory.first;
+
+    if (nullptr != hostData) {
+        void* data = nullptr;
+        CALL_VK(mPool.device().mapMemory(realMem->get(), mMemory.second, size, 0 /*flag, not used*/, &data));
+        ::memcpy(data, hostData, size);
+        mPool.device().unmapMemory(realMem->get());
+    }
+    CALL_VK(mPool.device().bindBufferMemory(mBuffer, realMem->get(), mMemory.second));
+}
+
+VulkanBuffer::~VulkanBuffer() {
+    const_cast<VulkanMemoryPool&>(mPool).returnBuffer(mBuffer, mSize, mUsage, mShared);
+    if (!mReleased) {
+        const_cast<VulkanMemoryPool&>(mPool).returnMemory(mMemory);
+    }
+}
+void* VulkanBuffer::map(int start, int size) const {
+    const auto& limits = mPool.device().proty().limits;
+    if (size < 0) {
+        size = mSize;
+    }
+    auto realMem = (VulkanMemory*)mMemory.first;
+    void* data = nullptr;
+    CALL_VK(mPool.device().mapMemory(realMem->get(), start + mMemory.second, size, 0, &data));
+    return data;
+}
+void VulkanBuffer::unmap() const {
+    auto realMem = (VulkanMemory*)mMemory.first;
+    mPool.device().unmapMemory(realMem->get());
+}
+void VulkanBuffer::release() {
+    if (mReleased) {
+        return;
+    }
+    mReleased = true;
+    const_cast<VulkanMemoryPool&>(mPool).returnMemory(mMemory);
+}
+
+void VulkanBuffer::flush(bool write, int start, int size) const {
+    // Do nothing
+}
+
+} // namespace MNN