source/blender/gpu/shaders/gpu_shader_image_shuffle_color_frag.glsl


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in vec2 texCoord_interp;
out vec4 fragColor;

uniform sampler2D image;
uniform vec4 color;
uniform vec4 shuffle;

void main()
{
  vec4 sample = texture(image, texCoord_interp);
  fragColor = vec4(sample.r * shuffle.r + sample.g * shuffle.g + sample.b * shuffle.b +
                   sample.a * shuffle.a) *
              color;
}