Files
XCEngine/docs/api/rhi/command-list/draw-indexed.md

34 lines
916 B
Markdown
Raw Normal View History

# RHICommandList::DrawIndexed
```cpp
virtual void DrawIndexed(uint32_t indexCount, uint32_t instanceCount = 1, uint32_t startIndex = 0, int32_t baseVertex = 0, uint32_t startInstance = 0) = 0;
```
2026-03-20 02:35:45 +08:00
执行索引绘制调用。通过索引缓冲区从顶点缓冲区中选择顶点绘制图元,允许顶点复用。
**参数:**
- `indexCount` - 索引数量
2026-03-20 02:35:45 +08:00
- `instanceCount` - 实例数量(默认 1
- `startIndex` - 起始索引偏移(默认 0
- `baseVertex` - 基础顶点偏移(默认 0
- `startInstance` - 起始实例偏移(默认 0
**返回:** `void`
**异常:** 无
**线程安全:** ❌
**复杂度:** O(indexCount * instanceCount)
**示例:**
```cpp
cmdList->DrawIndexed(36); // 绘制36个索引
```
## 相关文档
- [RHICommandList 总览](command-list.md) - 返回类总览
2026-03-20 02:35:45 +08:00
- [Draw](draw.md) - 绘制
- [SetIndexBuffer](set-index-buffer.md) - 设置索引缓冲