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Take FXAA samples from half-pixel coordinates to improve quality

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(cherry picked from commit dbcc0fa2a60edb3f3e69b0b73e7c9c612872559e)
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clayjohn 2022-09-26 11:47:22 -07:00 committed by Relintai
parent 47ab7e8ff8
commit 8f0e3af2a2
1 changed files with 4 additions and 4 deletions
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8
drivers/gles2/shaders/tonemap.glsl
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@ -237,10 +237,10 @@ vec4 apply_fxaa(vec4 color, vec2 uv_interp, vec2 pixel_size) {
const float FXAA_SPAN_MAX = 8.0;
const vec3 luma = vec3(0.299, 0.587, 0.114);
vec4 rgbNW = texture2DLod(source, uv_interp + vec2(-1.0, -1.0) * pixel_size, 0.0);
vec4 rgbNE = texture2DLod(source, uv_interp + vec2(1.0, -1.0) * pixel_size, 0.0);
vec4 rgbSW = texture2DLod(source, uv_interp + vec2(-1.0, 1.0) * pixel_size, 0.0);
vec4 rgbSE = texture2DLod(source, uv_interp + vec2(1.0, 1.0) * pixel_size, 0.0);
vec4 rgbNW = textureLod(source, uv_interp + vec2(-0.5, -0.5) * pixel_size, 0.0);
vec4 rgbNE = textureLod(source, uv_interp + vec2(0.5, -0.5) * pixel_size, 0.0);
vec4 rgbSW = textureLod(source, uv_interp + vec2(-0.5, 0.5) * pixel_size, 0.0);
vec4 rgbSE = textureLod(source, uv_interp + vec2(0.5, 0.5) * pixel_size, 0.0);
vec3 rgbM = color.rgb;
#ifdef DISABLE_ALPHA