2022-09-19 18:05:01 +08:00

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uniform mat4 uMVPMatrix; //总变换矩阵
attribute vec3 aPosition; //顶点位置
attribute vec2 aTexCoor; //顶点纹理坐标
varying vec2 vTextureCoord; //用于传递给片元着色器的变量
varying float rTemp; //用于传递给片元着色器的顶点坐标的变量
varying float currY;
void main()
{
gl_Position = uMVPMatrix * vec4(aPosition,1); //根据总变换矩阵计算此次绘制此顶点位置
vTextureCoord = aTexCoor;//将接收的纹理坐标传递给片元着色器
currY=aPosition.y;
rTemp=aPosition.x*aPosition.x+aPosition.y*aPosition.y;//求山上距离原点坐标的距离
}