[Bf-blender-cvs] [1a99b6fc7e8] master: Fix T64158 Eevee: Mixed SSS shader becomes brighter and brighter
Clément Foucault
noreply at git.blender.org
Thu May 9 00:10:33 CEST 2019
Commit: 1a99b6fc7e8e2d670bc5ceed23ecc84020a10555
Author: Clément Foucault
Date: Thu May 9 00:10:15 2019 +0200
Branches: master
https://developer.blender.org/rB1a99b6fc7e8e2d670bc5ceed23ecc84020a10555
Fix T64158 Eevee: Mixed SSS shader becomes brighter and brighter
This change the logic a bit, when 2 bsdfs using SSS are mixed, we use the
one with the biggest radius (on a per pixel basis).
This change from previous behavior which was to select input 1 if radius
was greater than 0.
===================================================================
M source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
===================================================================
diff --git a/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl b/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
index e2ce122493b..12e60f0250f 100644
--- a/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
@@ -836,18 +836,22 @@ Closure closure_mix(Closure cl1, Closure cl2, float fac)
cl.radiance /= max(1e-8, cl.opacity);
# ifdef USE_SSS
- cl.sss_data.rgb = mix(cl1.sss_data.rgb, cl2.sss_data.rgb, fac);
- cl.sss_data.a = (cl1.sss_data.a > 0.0) ? cl1.sss_data.a : cl2.sss_data.a;
+ /* Apply Mix on input */
+ cl1.sss_data.rgb *= 1.0 - fac;
+ cl2.sss_data.rgb *= fac;
+
+ /* Select biggest radius. */
+ bool use_cl1 = (cl1.sss_data.a > cl2.sss_data.a);
+ cl.sss_data = (use_cl1) ? cl1.sss_data : cl2.sss_data;
# ifdef USE_SSS_ALBEDO
/* TODO Find a solution to this. Dither? */
- cl.sss_albedo = (cl1.sss_data.a > 0.0) ? cl1.sss_albedo : cl2.sss_albedo;
+ cl.sss_albedo = (use_cl1) ? cl1.sss_albedo : cl2.sss_albedo;
/* Add radiance that was supposed to be filtered but was rejected. */
- cl.radiance += (cl1.sss_data.a > 0.0) ? cl2.sss_data.rgb * cl2.sss_albedo :
- cl1.sss_data.rgb * cl1.sss_albedo;
+ cl.radiance += (use_cl1) ? cl2.sss_data.rgb * cl2.sss_albedo : cl1.sss_data.rgb * cl1.sss_albedo;
# else
/* Add radiance that was supposed to be filtered but was rejected. */
- cl.radiance += (cl1.sss_data.a > 0.0) ? cl2.sss_data.rgb : cl1.sss_data.rgb;
+ cl.radiance += (use_cl1) ? cl2.sss_data.rgb : cl1.sss_data.rgb;
# endif
# endif
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