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Merge pull request #54160 from Calinou/shadow-filter-use-early-bailing

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Rémi Verschelde 2021-11-16 14:11:38 +01:00 committed by GitHub
commit caf39c9e7d
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1 changed files with 14 additions and 5 deletions
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19
drivers/gles3/shaders/scene.glsl
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@ -1263,7 +1263,20 @@ LIGHT_SHADER_CODE
float sample_shadow(highp sampler2DShadow shadow, vec2 shadow_pixel_size, vec2 pos, float depth, vec4 clamp_rect) {
#ifdef SHADOW_MODE_PCF_13 //ubershader-runtime
float avg = textureProj(shadow, vec4(pos, depth, 1.0));
float avg = textureProj(shadow, vec4(pos + vec2(shadow_pixel_size.x * 2.0, 0.0), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(-shadow_pixel_size.x * 2.0, 0.0), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(0.0, shadow_pixel_size.y * 2.0), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(0.0, -shadow_pixel_size.y * 2.0), depth, 1.0));
// Early bail if distant samples are fully shaded (or none are shaded) to improve performance.
if (avg <= 0.000001) {
// None shaded at all.
return 0.0;
} else if (avg >= 3.999999) {
// All fully shaded.
return 1.0;
}
avg += textureProj(shadow, vec4(pos, depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(shadow_pixel_size.x, 0.0), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(-shadow_pixel_size.x, 0.0), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(0.0, shadow_pixel_size.y), depth, 1.0));
@ -1272,10 +1285,6 @@ float sample_shadow(highp sampler2DShadow shadow, vec2 shadow_pixel_size, vec2 p
avg += textureProj(shadow, vec4(pos + vec2(-shadow_pixel_size.x, shadow_pixel_size.y), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(shadow_pixel_size.x, -shadow_pixel_size.y), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(-shadow_pixel_size.x, -shadow_pixel_size.y), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(shadow_pixel_size.x * 2.0, 0.0), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(-shadow_pixel_size.x * 2.0, 0.0), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(0.0, shadow_pixel_size.y * 2.0), depth, 1.0));
avg += textureProj(shadow, vec4(pos + vec2(0.0, -shadow_pixel_size.y * 2.0), depth, 1.0));
return avg * (1.0 / 13.0);
#endif //ubershader-runtime