Unity provides a handful of builtin values for your shaders: things like current object's transformation matrices, time etc. Unity为你在编写shader是提供了少量的内置变量:类似 当前物体的变换矩阵,时间等. You just use them in ShaderLab like you'd use any other property, the only diff…
1.每个Vertex Shader都有用户定义的输入属性,例如:位置,法线向量和纹理坐标等.Vertex Shaders也接收一致变量(uniform variables). uniform variables:一个只读的全局变量是为所有的顶点绘制调用 2.除了用户定义的输入变量,GLSL为每个Vertex定义了一组输入属性(内置变量), in int gl_VertexID; in int gl_InstanceID; gl_VertexID:当前被处理的顶点的索引.它是当前顶点在数组中的索引…