[Bf-blender-cvs] [204b01a254a] master: Fix T91590: Cycles specular baking not using smooth normal

[Brecht Van Lommel]

Commit: 204b01a254ac2445fea217e5211b2ed6aef631ca
Author: Brecht Van Lommel
Date:   Wed Sep 22 16:01:58 2021 +0200
Branches: master
https://developer.blender.org/rB204b01a254ac2445fea217e5211b2ed6aef631ca

Fix T91590: Cycles specular baking not using smooth normal

===================================================================

M       intern/cycles/kernel/integrator/integrator_init_from_bake.h

===================================================================

diff --git a/intern/cycles/kernel/integrator/integrator_init_from_bake.h 
b/intern/cycles/kernel/integrator/integrator_init_from_bake.h
index 4898ff936c6..96db606cee1 100644
--- a/intern/cycles/kernel/integrator/integrator_init_from_bake.h
+++ b/intern/cycles/kernel/integrator/integrator_init_from_bake.h
@@ -112,8 +112,6 @@ ccl_device bool 
integrator_init_from_bake(INTEGRATOR_STATE_ARGS,
   float3 P, Ng;
   int shader;
   triangle_point_normal(kg, kernel_data.bake.object_index, prim, u, v, &P, 
&Ng, &shader);
-  shader &= SHADER_MASK;
-
   if (kernel_data.film.pass_background != PASS_UNUSED) {
     /* Environment baking. */
 
@@ -132,11 +130,13 @@ ccl_device bool 
integrator_init_from_bake(INTEGRATOR_STATE_ARGS,
   }
   else {
     /* Surface baking. */
+    const float3 N = (shader & SHADER_SMOOTH_NORMAL) ? 
triangle_smooth_normal(kg, Ng, prim, u, v) :
+                                                       Ng;
 
     /* Setup ray. */
     Ray ray ccl_optional_struct_init;
-    ray.P = P + Ng;
-    ray.D = -Ng;
+    ray.P = P + N;
+    ray.D = -N;
     ray.t = FLT_MAX;
     ray.time = 0.5f;
 
@@ -166,12 +166,13 @@ ccl_device bool 
integrator_init_from_bake(INTEGRATOR_STATE_ARGS,
     integrator_state_write_isect(INTEGRATOR_STATE_PASS, &isect);
 
     /* Setup next kernel to execute. */
-    const int shader_flags = kernel_tex_fetch(__shaders, shader).flags;
+    const int shader_index = shader & SHADER_MASK;
+    const int shader_flags = kernel_tex_fetch(__shaders, shader_index).flags;
     if ((shader_flags & SD_HAS_RAYTRACE) || (kernel_data.film.pass_ao != 
PASS_UNUSED)) {
-      
INTEGRATOR_PATH_INIT_SORTED(DEVICE_KERNEL_INTEGRATOR_SHADE_SURFACE_RAYTRACE, 
shader);
+      
INTEGRATOR_PATH_INIT_SORTED(DEVICE_KERNEL_INTEGRATOR_SHADE_SURFACE_RAYTRACE, 
shader_index);
     }
     else {
-      INTEGRATOR_PATH_INIT_SORTED(DEVICE_KERNEL_INTEGRATOR_SHADE_SURFACE, 
shader);
+      INTEGRATOR_PATH_INIT_SORTED(DEVICE_KERNEL_INTEGRATOR_SHADE_SURFACE, 
shader_index);
     }
   }

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