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Fix shaders that break with specific pixel factors

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OmniScaleLegacy seems to has problems with every odd factor (3x, 5x, 7x,
9x, etc.).
SmoothBilinear has problems with 5x and 11x and probably more.
This commit is contained in:
LMLB 2018-03-11 15:09:30 +01:00
parent 0c80ac3296
commit c365c450a7
2 changed files with 7 additions and 7 deletions
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8
Shaders/OmniScaleLegacy.fsh
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@ -10,10 +10,10 @@ vec4 scale(sampler2D image)
vec2 pixel = texCoord * textureDimensions - vec2(0.5, 0.5);
vec4 q11 = texture(image, (pixel ) / textureDimensions);
vec4 q12 = texture(image, (pixel + vec2(0.0, 1.0)) / textureDimensions);
vec4 q21 = texture(image, (pixel + vec2(1.0, 0.0)) / textureDimensions);
vec4 q22 = texture(image, (pixel + vec2(1.0, 1.0)) / textureDimensions);
vec4 q11 = texture(image, (floor(pixel) + 0.5) / textureDimensions);
vec4 q12 = texture(image, (vec2(floor(pixel.x), ceil(pixel.y)) + 0.5) / textureDimensions);
vec4 q21 = texture(image, (vec2(ceil(pixel.x), floor(pixel.y)) + 0.5) / textureDimensions);
vec4 q22 = texture(image, (ceil(pixel) + 0.5) / textureDimensions);
vec2 pos = fract(pixel);

6
Shaders/SmoothBilinear.fsh
View File

@ -11,8 +11,8 @@ vec4 scale(sampler2D image)
vec2 s = smoothstep(0., 1., fract(pixel));
vec4 r1 = mix(q11, q21, fract(s.x));
vec4 r2 = mix(q12, q22, fract(s.x));
vec4 r1 = mix(q11, q21, s.x);
vec4 r2 = mix(q12, q22, s.x);
return mix (r1, r2, fract(s.y));
return mix (r1, r2, s.y);
}