[Bf-blender-cvs] [a0c564f86aa] blender2.8: Eevee: Hair: Disable SSR for hairs.
Clément Foucault
noreply at git.blender.org
Mon May 14 00:10:07 CEST 2018
Commit: a0c564f86aafd17f1614620dbe918898635a1e35
Author: Clément Foucault
Date: Mon May 14 00:18:00 2018 +0200
Branches: blender2.8
https://developer.blender.org/rBa0c564f86aafd17f1614620dbe918898635a1e35
Eevee: Hair: Disable SSR for hairs.
SSR does not work with hair strands. Basically, the rays are too much
random to ever converge properly and just result in a soup of self
inter reflections.
So forcing it to not produce any SSR. Could potentially save some bandwidth
by not rendering hair to the SSR buffers.
===================================================================
M source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
M source/blender/draw/engines/eevee/shaders/lit_surface_frag.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 80d305cb1e8..704b039e0f6 100644
--- a/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
@@ -671,6 +671,7 @@ struct Closure {
/* This is hacking ssr_id to tag transparent bsdf */
#define TRANSPARENT_CLOSURE_FLAG -2
#define REFRACT_CLOSURE_FLAG -3
+#define NO_SSR -999
# ifdef USE_SSS
# ifdef USE_SSS_ALBEDO
diff --git a/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl b/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl
index ca33aa99ed9..737a2977146 100644
--- a/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl
+++ b/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl
@@ -177,6 +177,13 @@ void CLOSURE_NAME(
float cos_theta = rand.x * 2.0 - 1.0;
float sin_theta = sqrt(max(0.0, 1.0f - cos_theta*cos_theta));;
N = N * sin_theta + B * cos_theta;
+
+# ifdef CLOSURE_GLOSSY
+ /* Hair random normal does not work with SSR :(.
+ * It just create self reflection feedback (which is beautifful btw)
+ * but not correct. */
+ ssr_id = NO_SSR; /* Force bypass */
+# endif
#endif
/* ---------------------------------------------------------------- */
@@ -385,6 +392,12 @@ void CLOSURE_NAME(
}
out_spec += spec_accum.rgb * ssr_spec * spec_occlu * float(specToggle);
+
+# ifdef HAIR_SHADER
+ /* Hack: Overide spec color so that ssr will not be computed
+ * even if ssr_id match the active ssr. */
+ ssr_spec = vec3(0.0);
+# endif
#endif
#ifdef CLOSURE_REFRACTION
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