58 lines
1.3 KiB
Markdown
58 lines
1.3 KiB
Markdown
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# Mesh::SetVertexData
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```cpp
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void SetVertexData(const void* data, size_t size, Core::uint32 vertexCount,
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Core::uint32 vertexStride, VertexAttribute attributes);
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```
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设置网格的顶点数据。此方法会复制传入的数据到内部缓冲区。
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**参数：**
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- `data` - 顶点数据指针，不能为 nullptr
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- `size` - 顶点数据总字节数
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- `vertexCount` - 顶点数量
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- `vertexStride` - 单个顶点的字节大小
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- `attributes` - 顶点属性标志，指定数据包含哪些顶点通道
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**返回：** 无
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**异常：** 无
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**线程安全：** ❌
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**复杂度：** O(n) - n 为顶点数据大小
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**示例：**
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```cpp
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#include "XCEngine/Resources/Mesh.h"
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using namespace XCEngine::Resources;
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struct Vertex {
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float position[3];
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float normal[3];
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float uv[2];
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};
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Vertex vertices[4] = {
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{{-0.5f, -0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {0.0f, 0.0f}},
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{{ 0.5f, -0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
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{{ 0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 1.0f}},
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{{-0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {0.0f, 1.0f}}
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};
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Mesh mesh;
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mesh.SetVertexData(
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vertices,
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sizeof(vertices),
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4,
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sizeof(Vertex),
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VertexAttribute::Position | VertexAttribute::Normal | VertexAttribute::UV0
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);
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```
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## 相关文档
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- [类总览](mesh.md) - 返回类总览
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