attribute vec4 a_position; attribute vec2 a_texCoord; attribute vec4 a_color;
varying vec4 v_fragmentColor; varying vec2 v_texCoord;
void main() { gl_Position = CC_PMatrix * a_position; v_fragmentColor = a_color; v_texCoord = a_texCoord; }
求大神讲解 如何在shader里旋转图片