Lucas de Vries
18 lines
355 B
Plaintext
18 lines
355 B
Plaintext
uniform sampler2D texture;
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varying vec2 rcoords;
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const float twopi = 6.28318530718;
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void main() {
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float r = length(rcoords);
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if(r >= 1.0 || r < 0.0)
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discard;
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float a = atan(rcoords.y, rcoords.x) / twopi;
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vec4 col = gl_Color;
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col.a *= texture2D(texture, vec2(a,r)).r;
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if(col.a < 1.0 / 255.0)
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discard;
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gl_FragColor = col;
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}
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