diff options
author | Sebastian Herholz <sherholz> | 2021-11-17 19:26:46 +0300 |
---|---|---|
committer | Brecht Van Lommel <brecht@blender.org> | 2021-11-17 20:03:56 +0300 |
commit | d9bc8f189cc36cc55082cfd7ad8845e96eb062e3 (patch) | |
tree | 0fe69c7ae01d5fa3dd68e5d719bae9a757f4ec83 /intern/cycles/kernel/integrator/shade_surface.h | |
parent | 063ad8635ec87a490d6fc02c937387a3c6673b08 (diff) |
Cycles: add build option to enable a debugging feature for MIS
This patch adds a CMake option "WITH_CYCLES_DEBUG" which builds cycles with
a feature that allows debugging/selecting the direct-light sampling strategy.
The same option may later be used to add other debugging features that could
affect performance in release builds.
The three options are:
* Forward path tracing (e.g., via BSDF or phase function)
* Next-event estimation
* Multiple importance sampling combination of the previous two methods
Such a feature is useful for debugging light different sampling, evaluation,
and pdf methods (e.g., for light sources and BSDFs).
Differential Revision: https://developer.blender.org/D13152
Diffstat (limited to 'intern/cycles/kernel/integrator/shade_surface.h')
-rw-r--r-- | intern/cycles/kernel/integrator/shade_surface.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/intern/cycles/kernel/integrator/shade_surface.h b/intern/cycles/kernel/integrator/shade_surface.h index 2c478784bc9..c9c586f5ae4 100644 --- a/intern/cycles/kernel/integrator/shade_surface.h +++ b/intern/cycles/kernel/integrator/shade_surface.h @@ -27,8 +27,6 @@ #include "kernel/light/light.h" #include "kernel/light/sample.h" -#include "kernel/sample/mis.h" - CCL_NAMESPACE_BEGIN ccl_device_forceinline void integrate_surface_shader_setup(KernelGlobals kg, @@ -95,8 +93,7 @@ ccl_device_forceinline void integrate_surface_emission(KernelGlobals kg, /* Multiple importance sampling, get triangle light pdf, * and compute weight with respect to BSDF pdf. */ float pdf = triangle_light_pdf(kg, sd, t); - float mis_weight = power_heuristic(bsdf_pdf, pdf); - + float mis_weight = light_sample_mis_weight_forward(kg, bsdf_pdf, pdf); L *= mis_weight; } @@ -155,7 +152,7 @@ ccl_device_forceinline void integrate_surface_direct_light(KernelGlobals kg, bsdf_eval_mul3(&bsdf_eval, light_eval / ls.pdf); if (ls.shader & SHADER_USE_MIS) { - const float mis_weight = power_heuristic(ls.pdf, bsdf_pdf); + const float mis_weight = light_sample_mis_weight_nee(kg, ls.pdf, bsdf_pdf); bsdf_eval_mul(&bsdf_eval, mis_weight); } |