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-rw-r--r--servers/rendering/renderer_rd/shaders/scene_forward.glsl10
1 files changed, 4 insertions, 6 deletions
diff --git a/servers/rendering/renderer_rd/shaders/scene_forward.glsl b/servers/rendering/renderer_rd/shaders/scene_forward.glsl
index adccf1e712..1cea9bf8db 100644
--- a/servers/rendering/renderer_rd/shaders/scene_forward.glsl
+++ b/servers/rendering/renderer_rd/shaders/scene_forward.glsl
@@ -799,13 +799,11 @@ LIGHT_SHADER_CODE
#ifndef USE_NO_SHADOWS
-// Produces cheap white noise, optimized for window-space
-// Comes from: https://www.shadertoy.com/view/4djSRW
-// Copyright: Dave Hoskins, MIT License
+// Interleaved Gradient Noise
+// http://www.iryoku.com/next-generation-post-processing-in-call-of-duty-advanced-warfare
float quick_hash(vec2 pos) {
- vec3 p3 = fract(vec3(pos.xyx) * .1031);
- p3 += dot(p3, p3.yzx + 33.33);
- return fract((p3.x + p3.y) * p3.z);
+ const vec3 magic = vec3(0.06711056f, 0.00583715f, 52.9829189f);
+ return fract(magic.z * fract(dot(pos, magic.xy)));
}
float sample_directional_pcf_shadow(texture2D shadow, vec2 shadow_pixel_size, vec4 coord) {