21 lines
516 B
C
21 lines
516 B
C
"#ifdef GL_ES\n"
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"#ifdef GL_FRAGMENT_PRECISION_HIGH\n"
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"precision highp float;\n"
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"#else\n"
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"precision mediump float;\n"
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"#endif\n"
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"#endif\n"
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"uniform sampler2D tex;\n"
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"varying vec4 col;\n"
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"varying vec2 tex_c;\n"
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"void main()\n"
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"{\n"
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" vec3 inp = texture2D(tex,tex_c.xy).rgb;\n"
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" vec4 sep;\n"
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" sep.r = dot(inp, vec3(.393, .769, .189));\n"
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" sep.g = dot(inp, vec3(.349, .686, .168));\n"
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" sep.b = dot(inp, vec3(.272, .534, .131));\n"
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" sep.a = texture2D(tex,tex_c.xy).a;\n"
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" gl_FragColor = sep * col;\n"
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"}\n"
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