diff options
Diffstat (limited to 'intern/cycles/kernel/integrator/shade_background.h')
| -rw-r--r-- | intern/cycles/kernel/integrator/shade_background.h | 112 |
1 files changed, 56 insertions, 56 deletions
diff --git a/intern/cycles/kernel/integrator/shade_background.h b/intern/cycles/kernel/integrator/shade_background.h index 57d060d58df..30ce0999258 100644 --- a/intern/cycles/kernel/integrator/shade_background.h +++ b/intern/cycles/kernel/integrator/shade_background.h @@ -3,8 +3,10 @@ #pragma once -#include "kernel/film/accumulate.h" -#include "kernel/integrator/shader_eval.h" +#include "kernel/film/light_passes.h" + +#include "kernel/integrator/surface_shader.h" + #include "kernel/light/light.h" #include "kernel/light/sample.h" @@ -14,7 +16,6 @@ ccl_device Spectrum integrator_eval_background_shader(KernelGlobals kg, IntegratorState state, ccl_global float *ccl_restrict render_buffer) { -#ifdef __BACKGROUND__ const int shader = kernel_data.background.surface_shader; const uint32_t path_flag = INTEGRATOR_STATE(state, path, flag); @@ -31,50 +32,30 @@ ccl_device Spectrum integrator_eval_background_shader(KernelGlobals kg, /* Use fast constant background color if available. */ Spectrum L = zero_spectrum(); - if (!shader_constant_emission_eval(kg, shader, &L)) { - /* Evaluate background shader. */ - - /* TODO: does aliasing like this break automatic SoA in CUDA? - * Should we instead store closures separate from ShaderData? */ - ShaderDataTinyStorage emission_sd_storage; - ccl_private ShaderData *emission_sd = AS_SHADER_DATA(&emission_sd_storage); - - PROFILING_INIT_FOR_SHADER(kg, PROFILING_SHADE_LIGHT_SETUP); - shader_setup_from_background(kg, - emission_sd, - INTEGRATOR_STATE(state, ray, P), - INTEGRATOR_STATE(state, ray, D), - INTEGRATOR_STATE(state, ray, time)); - - PROFILING_SHADER(emission_sd->object, emission_sd->shader); - PROFILING_EVENT(PROFILING_SHADE_LIGHT_EVAL); - shader_eval_surface<KERNEL_FEATURE_NODE_MASK_SURFACE_BACKGROUND>( - kg, state, emission_sd, render_buffer, path_flag | PATH_RAY_EMISSION); - - L = shader_background_eval(emission_sd); + if (surface_shader_constant_emission(kg, shader, &L)) { + return L; } - /* Background MIS weights. */ -# ifdef __BACKGROUND_MIS__ - /* Check if background light exists or if we should skip pdf. */ - if (!(INTEGRATOR_STATE(state, path, flag) & PATH_RAY_MIS_SKIP) && - kernel_data.background.use_mis) { - const float3 ray_P = INTEGRATOR_STATE(state, ray, P); - const float3 ray_D = INTEGRATOR_STATE(state, ray, D); - const float mis_ray_pdf = INTEGRATOR_STATE(state, path, mis_ray_pdf); - - /* multiple importance sampling, get background light pdf for ray - * direction, and compute weight with respect to BSDF pdf */ - const float pdf = background_light_pdf(kg, ray_P, ray_D); - const float mis_weight = light_sample_mis_weight_forward(kg, mis_ray_pdf, pdf); - L *= mis_weight; - } -# endif + /* Evaluate background shader. */ - return L; -#else - return make_spectrum(0.8f); -#endif + /* TODO: does aliasing like this break automatic SoA in CUDA? + * Should we instead store closures separate from ShaderData? */ + ShaderDataTinyStorage emission_sd_storage; + ccl_private ShaderData *emission_sd = AS_SHADER_DATA(&emission_sd_storage); + + PROFILING_INIT_FOR_SHADER(kg, PROFILING_SHADE_LIGHT_SETUP); + shader_setup_from_background(kg, + emission_sd, + INTEGRATOR_STATE(state, ray, P), + INTEGRATOR_STATE(state, ray, D), + INTEGRATOR_STATE(state, ray, time)); + + PROFILING_SHADER(emission_sd->object, emission_sd->shader); + PROFILING_EVENT(PROFILING_SHADE_LIGHT_EVAL); + surface_shader_eval<KERNEL_FEATURE_NODE_MASK_SURFACE_BACKGROUND>( + kg, state, emission_sd, render_buffer, path_flag | PATH_RAY_EMISSION); + + return surface_shader_background(emission_sd); } ccl_device_inline void integrate_background(KernelGlobals kg, @@ -117,17 +98,37 @@ ccl_device_inline void integrate_background(KernelGlobals kg, #endif /* __MNEE__ */ /* Evaluate background shader. */ - Spectrum L = (eval_background) ? integrator_eval_background_shader(kg, state, render_buffer) : - zero_spectrum(); + Spectrum L = zero_spectrum(); + + if (eval_background) { + L = integrator_eval_background_shader(kg, state, render_buffer); + + /* When using the ao bounces approximation, adjust background + * shader intensity with ao factor. */ + if (path_state_ao_bounce(kg, state)) { + L *= kernel_data.integrator.ao_bounces_factor; + } + + /* Background MIS weights. */ + float mis_weight = 1.0f; + /* Check if background light exists or if we should skip pdf. */ + if (!(INTEGRATOR_STATE(state, path, flag) & PATH_RAY_MIS_SKIP) && + kernel_data.background.use_mis) { + const float3 ray_P = INTEGRATOR_STATE(state, ray, P); + const float3 ray_D = INTEGRATOR_STATE(state, ray, D); + const float mis_ray_pdf = INTEGRATOR_STATE(state, path, mis_ray_pdf); + + /* multiple importance sampling, get background light pdf for ray + * direction, and compute weight with respect to BSDF pdf */ + const float pdf = background_light_pdf(kg, ray_P, ray_D); + mis_weight = light_sample_mis_weight_forward(kg, mis_ray_pdf, pdf); + } - /* When using the ao bounces approximation, adjust background - * shader intensity with ao factor. */ - if (path_state_ao_bounce(kg, state)) { - L *= kernel_data.integrator.ao_bounces_factor; + L *= mis_weight; } /* Write to render buffer. */ - kernel_accum_background(kg, state, L, transparent, is_transparent_background_ray, render_buffer); + film_write_background(kg, state, L, transparent, is_transparent_background_ray, render_buffer); } ccl_device_inline void integrate_distant_lights(KernelGlobals kg, @@ -175,18 +176,17 @@ ccl_device_inline void integrate_distant_lights(KernelGlobals kg, } /* MIS weighting. */ + float mis_weight = 1.0f; if (!(path_flag & PATH_RAY_MIS_SKIP)) { /* multiple importance sampling, get regular light pdf, * and compute weight with respect to BSDF pdf */ const float mis_ray_pdf = INTEGRATOR_STATE(state, path, mis_ray_pdf); - const float mis_weight = light_sample_mis_weight_forward(kg, mis_ray_pdf, ls.pdf); - light_eval *= mis_weight; + mis_weight = light_sample_mis_weight_forward(kg, mis_ray_pdf, ls.pdf); } /* Write to render buffer. */ - const Spectrum throughput = INTEGRATOR_STATE(state, path, throughput); - kernel_accum_emission( - kg, state, throughput * light_eval, render_buffer, kernel_data.background.lightgroup); + film_write_surface_emission( + kg, state, light_eval, mis_weight, render_buffer, kernel_data.background.lightgroup); } } } |