15 lines
316 B
Plaintext
15 lines
316 B
Plaintext
#ifdef GL_ES
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#ifdef GL_FRAGMENT_PRECISION_HIGH
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precision highp float;
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#else
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precision mediump float;
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#endif
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#endif
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uniform sampler2D tex;
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varying vec2 tex_c;
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void main()
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{
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float inten = dot(texture2D(tex,tex_c.xy).abg,vec3(.3, .59, .11));
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gl_FragColor = vec4(inten, inten, inten, texture2D(tex,tex_c.xy).r);
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}
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