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Doom2fan/VirtualNormalNx.frag.glsl Secret

Last active June 26, 2021 17:50
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VirtualNormalNx.frag.glsl
vec2 texCoord = /* (e.g. vTexCoord.st) */;
vec2 texSize = /* (e.g. textureSize (tex, 0)) */;
float scalingFactor = /* The virtual res the user wants */
vec2 pixelCoords = texCoord * texSize;
vec2 subPixel = (fract (pixelCoords) - .5) * 2;
subPixel = pow (abs (subPixel), vec2 (scalingFactor)) * sign (subPixel) / 2 + .5;
texCoord = (floor (pixelCoords) + subPixel) / texSize;
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