10 lines
273 B
GLSL
10 lines
273 B
GLSL
precision mediump float;
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varying vec2 v_texcoord;
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uniform sampler2D tex;
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void main() {
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vec4 this_colour = texture2D( tex, v_texcoord );
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float new_colour = (this_colour.r+this_colour.g+this_colour.b)/3.0;
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gl_FragColor = vec4(new_colour,new_colour,new_colour,1.0);
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}
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