20 lines
588 B
SourcePawn
20 lines
588 B
SourcePawn
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//
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float PCF3x3(vec3 uvw, uint textureid, uint samplerid) {
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float size = 1.0 / textureBindlessSize2D(textureid).x; // assume square texture
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float shadow = 0.0;
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for (int v=-1; v<=+1; v++)
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for (int u=-1; u<=+1; u++)
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shadow += textureBindless2DShadow(textureid, samplerid, uvw + size * vec3(u, v, 0));
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return shadow / 9;
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}
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float shadow(vec4 s, uint textureid, uint samplerid) {
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s = s / s.w;
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if (s.z > -1.0 && s.z < 1.0) {
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float shadowSample = PCF3x3(vec3(s.x, 1.0 - s.y, s.z), textureid, samplerid);
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return mix(0.3, 1.0, shadowSample);
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}
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return 1.0;
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}
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