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bobcao3 avatar bobcao3 commented on June 9, 2024

可配置化实现的方法：

经过无数次总结--和unity3d的借鉴--

渲染一个物体基本需要两个部分：

  1. 几何数据
  2. 着色器

目前着色器和几何数据都有对应的类，但是实际上几何数据结构被定死了，这就带来一个问题：它渲染的时候有时候有不需要的数据，有时候又多出了数据

所以我建立一个描述结构，用来描述这个几何结构的配置方式，诸如有几个buffer，每个buffer中一个节点由多少byte组成，每个节点有多少个attribute，然后在shader里做好对应的attribute就行

由于OpenGL对attribute数量有限制，实现这个描述结构不会很复杂（一个数组就解决了）

描述结构可以由VMGS来配置，也可以用VM76直接获取结构体内存然后直接写入

那么如此之后，渲染就会有两条指令缓冲，一条是切换着色器，一条是绘图

from vm-76.

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