From d9bc8f189cc36cc55082cfd7ad8845e96eb062e3 Mon Sep 17 00:00:00 2001 From: Sebastian Herholz Date: Wed, 17 Nov 2021 17:26:46 +0100 Subject: 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 --- intern/cycles/kernel/types.h | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'intern/cycles/kernel/types.h') diff --git a/intern/cycles/kernel/types.h b/intern/cycles/kernel/types.h index 74b34524786..e66c3fe49df 100644 --- a/intern/cycles/kernel/types.h +++ b/intern/cycles/kernel/types.h @@ -481,6 +481,16 @@ enum PanoramaType { PANORAMA_NUM_TYPES, }; +/* Direct Light Sampling */ + +enum DirectLightSamplingType { + DIRECT_LIGHT_SAMPLING_MIS = 0, + DIRECT_LIGHT_SAMPLING_FORWARD = 1, + DIRECT_LIGHT_SAMPLING_NEE = 2, + + DIRECT_LIGHT_SAMPLING_NUM, +}; + /* Differential */ typedef struct differential3 { @@ -1193,8 +1203,11 @@ typedef struct KernelIntegrator { /* Closure filter. */ int filter_closures; + /* MIS debuging */ + int direct_light_sampling_type; + /* padding */ - int pad1, pad2, pad3; + int pad1, pad2; } KernelIntegrator; static_assert_align(KernelIntegrator, 16); -- cgit v1.2.3