diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_path.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_path.h | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/intern/cycles/kernel/kernel_path.h b/intern/cycles/kernel/kernel_path.h index ff12e85375c..8ebac177277 100644 --- a/intern/cycles/kernel/kernel_path.h +++ b/intern/cycles/kernel/kernel_path.h @@ -223,6 +223,7 @@ __device float4 kernel_path_integrate(KernelGlobals *kg, RNG *rng, int sample, R path_radiance_init(&L, kernel_data.film.use_light_pass); + float min_ray_pdf = FLT_MAX; float ray_pdf = 0.0f; PathState state; int rng_offset = PRNG_BASE_NUM; @@ -239,13 +240,17 @@ __device float4 kernel_path_integrate(KernelGlobals *kg, RNG *rng, int sample, R /* eval background shader if nothing hit */ if(kernel_data.background.transparent && (state.flag & PATH_RAY_CAMERA)) { L_transparent += average(throughput); + +#ifdef __PASSES__ + if(!(kernel_data.film.pass_flag & PASS_BACKGROUND)) +#endif + break; } + #ifdef __BACKGROUND__ - else { - /* sample background shader */ - float3 L_background = indirect_background(kg, &ray, state.flag, ray_pdf); - path_radiance_accum_background(&L, throughput, L_background, state.bounce); - } + /* sample background shader */ + float3 L_background = indirect_background(kg, &ray, state.flag, ray_pdf); + path_radiance_accum_background(&L, throughput, L_background, state.bounce); #endif break; @@ -259,6 +264,18 @@ __device float4 kernel_path_integrate(KernelGlobals *kg, RNG *rng, int sample, R kernel_write_data_passes(kg, buffer, &L, &sd, sample, state.flag, throughput); + /* blurring of bsdf after bounces, for rays that have a small likelihood + of following this particular path (diffuse, rough glossy) */ + if(kernel_data.integrator.filter_glossy != FLT_MAX) { + float blur_pdf = kernel_data.integrator.filter_glossy*min_ray_pdf; + + if(blur_pdf < 1.0f) { + float blur_roughness = sqrtf(1.0f - blur_pdf)*0.5f; + shader_bsdf_blur(kg, &sd, blur_roughness); + } + } + + /* holdout */ #ifdef __HOLDOUT__ if((sd.flag & SD_HOLDOUT) && (state.flag & PATH_RAY_CAMERA)) { float3 holdout_weight = shader_holdout_eval(kg, &sd); @@ -378,8 +395,10 @@ __device float4 kernel_path_integrate(KernelGlobals *kg, RNG *rng, int sample, R path_radiance_bsdf_bounce(&L, &throughput, &bsdf_eval, bsdf_pdf, state.bounce, label); /* set labels */ - if(!(label & LABEL_TRANSPARENT)) + if(!(label & LABEL_TRANSPARENT)) { ray_pdf = bsdf_pdf; + min_ray_pdf = fminf(bsdf_pdf, min_ray_pdf); + } /* update path state */ path_state_next(kg, &state, label); @@ -394,7 +413,7 @@ __device float4 kernel_path_integrate(KernelGlobals *kg, RNG *rng, int sample, R #endif } - float3 L_sum = path_radiance_sum(&L); + float3 L_sum = path_radiance_sum(kg, &L); #ifdef __CLAMP_SAMPLE__ path_radiance_clamp(&L, &L_sum, kernel_data.integrator.sample_clamp); |