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3Resources/游戏开发/性能优化/卡片/DrawCall.md Normal file
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CPU每次调用图像编程接口 glDrawElements(0penGl日中的图元清染函数)或者 DrawIndexedPrimitive(Direct中的顶点绘制方法)命令GPU渲染的操作称为一次Draw Cal，Draw Cal就是一次渲染命令的调用，它指向一个需要被渲染的图元(primitive)列表，不包含任何材质信息，glDrawElements 或者 DrawIndexedPrimitive 函数的作用是将CPU准备好的顶点数据渲染出来.