[Bf-blender-cvs] [6331385a503] soc-2020-production-ready-light-tree: Fixed how last not-transparent bounce is found. Was using emission_sd if most recent bounce was transparent, but this is incorrect. Now it uses the ray_N PathState for normal and recalculates the point.
Sam Kottler
noreply at git.blender.org
Fri Jun 19 20:17:34 CEST 2020
Commit: 6331385a503664c0da1d22d260e274b931865590
Author: Sam Kottler
Date: Fri Jun 19 12:14:00 2020 -0600
Branches: soc-2020-production-ready-light-tree
https://developer.blender.org/rB6331385a503664c0da1d22d260e274b931865590
Fixed how last not-transparent bounce is found.
Was using emission_sd if most recent bounce was transparent, but this
is incorrect. Now it uses the ray_N PathState for normal and
recalculates the point.
===================================================================
M intern/cycles/kernel/kernel_emission.h
M intern/cycles/kernel/kernel_path.h
===================================================================
diff --git a/intern/cycles/kernel/kernel_emission.h b/intern/cycles/kernel/kernel_emission.h
index 5e04f52a22c..46ff209e6f1 100644
--- a/intern/cycles/kernel/kernel_emission.h
+++ b/intern/cycles/kernel/kernel_emission.h
@@ -349,14 +349,8 @@ ccl_device_noinline_cpu float3 indirect_background(KernelGlobals *kg,
/* consider shading point at previous non-transparent bounce */
float3 P_pick;
float3 N_pick;
- if (state->ray_t == 0.0f) { // Non-transparent bounce
- P_pick = emission_sd->P_pick;
- N_pick = emission_sd->N_pick;
- }
- else { // Transparent bounce
- P_pick = ray->P - state->ray_t * ray->D;
- N_pick = state->ray_N;
- }
+ P_pick = ray->P - state->ray_t * ray->D;
+ N_pick = state->ray_N;
/* check if background light exists or if we should skip pdf */
int res_x = kernel_data.integrator.pdf_background_res_x;
diff --git a/intern/cycles/kernel/kernel_path.h b/intern/cycles/kernel/kernel_path.h
index af9833385b4..84ccb48bdf9 100644
--- a/intern/cycles/kernel/kernel_path.h
+++ b/intern/cycles/kernel/kernel_path.h
@@ -98,15 +98,8 @@ ccl_device_forceinline void kernel_path_lamp_emission(KernelGlobals *kg,
/* ray starting from previous non-transparent bounce */
Ray light_ray ccl_optional_struct_init;
float3 N_pick;
- if (state->ray_t == 0.0f) {
- light_ray.P = emission_sd->P_pick;
- N_pick = emission_sd->N_pick;
- }
- else {
- /* Current bounce was on a transparent surface */
- light_ray.P = ray->P - state->ray_t * ray->D;
- N_pick = state->ray_N;
- }
+ light_ray.P = ray->P - state->ray_t * ray->D;
+ N_pick = state->ray_N;
state->ray_t += isect->t;
light_ray.D = ray->D;
@@ -337,14 +330,8 @@ ccl_device_forceinline bool kernel_path_shader_apply(KernelGlobals *kg,
/* ray starting from previous non-transparent bounce */
float3 P_pick;
float3 N_pick;
- if (state->ray_t == 0.0f) { // Non-transparent bounce
- P_pick = sd->P_pick;
- N_pick = sd->N_pick;
- }
- else { // Transparent bounce
- P_pick = ray->P - state->ray_t * ray->D;
- N_pick = state->ray_N;
- }
+ P_pick = ray->P - state->ray_t * ray->D;
+ N_pick = state->ray_N;
float ray_length = state->ray_t + sd->ray_length;
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