mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-13 16:37:30 +00:00
22 lines
476 B
GLSL
22 lines
476 B
GLSL
uniform sampler2D palette;
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uniform sampler2D texture;
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uniform float realtime;
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varying vec2 tst;
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const float SPEED = 20.0;
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const float CYCLE = 128.0;
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const float PI = 3.14159;
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const float FACTOR = PI * 2.0 / CYCLE;
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void
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main (void)
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{
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float pix;
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vec2 rt = vec2 (realtime, realtime);
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vec2 st = tst;
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st = st + sin ((tst.ts * 64.0 + rt * SPEED) * FACTOR) / 64.0;
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pix = texture2D (texture, st).r;
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gl_FragColor = texture2D (palette, vec2 (pix, 0.5));
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}
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