| precision mediump float; | |
| varying vec2 v_tex_coord_rgba; | |
| uniform sampler2D texture_rgba; | |
| uniform mat4 to_rgb_color_matrix; | |
| void main() { | |
| vec4 untransformed_color = vec4(texture2D(texture_rgba, v_tex_coord_rgba).rgba); | |
| gl_FragColor = untransformed_color * to_rgb_color_matrix; | |
| } |