28 lines
366 B
Markdown
28 lines
366 B
Markdown
|
# D3D12Buffer::Map
|
||
|
|
|
||
|
|
## 函数签名
|
||
|
|
|
||
|
|
```cpp
|
||
|
|
void* Map() override
|
||
|
|
```
|
||
|
|
|
||
|
|
## 中文描述
|
||
|
|
|
||
|
|
将缓冲区内存映射到 CPU 可访问地址。仅对 UPLOAD 或 READBACK 堆有效。
|
||
|
|
|
||
|
|
## 返回值
|
||
|
|
|
||
|
|
`void*` - 映射的内存指针
|
||
|
|
|
||
|
|
## 复杂度
|
||
|
|
|
||
|
|
O(1)
|
||
|
|
|
||
|
|
## 示例
|
||
|
|
|
||
|
|
```cpp
|
||
|
|
void* mapped = uploadBuffer.Map();
|
||
|
|
memcpy(mapped, vertexData, sizeof(vertexData));
|
||
|
|
buffer.Unmap();
|
||
|
|
```
|