diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_path_surface.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_path_surface.h | 134 |
1 files changed, 69 insertions, 65 deletions
diff --git a/intern/cycles/kernel/kernel_path_surface.h b/intern/cycles/kernel/kernel_path_surface.h index 85bdebf195e..11fadcc6bcf 100644 --- a/intern/cycles/kernel/kernel_path_surface.h +++ b/intern/cycles/kernel/kernel_path_surface.h @@ -22,97 +22,101 @@ CCL_NAMESPACE_BEGIN ccl_device void kernel_branched_path_surface_connect_light(KernelGlobals *kg, RNG *rng, ShaderData *sd, PathState *state, float3 throughput, float num_samples_adjust, PathRadiance *L, bool sample_all_lights) { +#ifdef __EMISSION__ /* sample illumination from lights to find path contribution */ - if(sd->flag & SD_BSDF_HAS_EVAL) { - Ray light_ray; - BsdfEval L_light; - bool is_lamp; + if(!(sd->flag & SD_BSDF_HAS_EVAL)) + return; + + Ray light_ray; + BsdfEval L_light; + bool is_lamp; #ifdef __OBJECT_MOTION__ - light_ray.time = sd->time; + light_ray.time = sd->time; #endif - if(sample_all_lights) { - /* lamp sampling */ - for(int i = 0; i < kernel_data.integrator.num_all_lights; i++) { - int num_samples = ceil_to_int(num_samples_adjust*light_select_num_samples(kg, i)); - float num_samples_inv = num_samples_adjust/(num_samples*kernel_data.integrator.num_all_lights); - RNG lamp_rng = cmj_hash(*rng, i); + if(sample_all_lights) { + /* lamp sampling */ + for(int i = 0; i < kernel_data.integrator.num_all_lights; i++) { + int num_samples = ceil_to_int(num_samples_adjust*light_select_num_samples(kg, i)); + float num_samples_inv = num_samples_adjust/(num_samples*kernel_data.integrator.num_all_lights); + RNG lamp_rng = cmj_hash(*rng, i); - if(kernel_data.integrator.pdf_triangles != 0.0f) - num_samples_inv *= 0.5f; + if(kernel_data.integrator.pdf_triangles != 0.0f) + num_samples_inv *= 0.5f; - for(int j = 0; j < num_samples; j++) { - float light_u, light_v; - path_branched_rng_2D(kg, &lamp_rng, state, j, num_samples, PRNG_LIGHT_U, &light_u, &light_v); + for(int j = 0; j < num_samples; j++) { + float light_u, light_v; + path_branched_rng_2D(kg, &lamp_rng, state, j, num_samples, PRNG_LIGHT_U, &light_u, &light_v); - LightSample ls; - light_select(kg, i, light_u, light_v, sd->P, &ls); + LightSample ls; + light_select(kg, i, light_u, light_v, sd->P, &ls, false); - if(direct_emission(kg, sd, &ls, &light_ray, &L_light, &is_lamp, state->bounce, state->transparent_bounce)) { - /* trace shadow ray */ - float3 shadow; + if(direct_emission(kg, sd, &ls, &light_ray, &L_light, &is_lamp, state->bounce, state->transparent_bounce)) { + /* trace shadow ray */ + float3 shadow; - if(!shadow_blocked(kg, state, &light_ray, &shadow)) { - /* accumulate */ - path_radiance_accum_light(L, throughput*num_samples_inv, &L_light, shadow, num_samples_inv, state->bounce, is_lamp); - } + if(!shadow_blocked(kg, state, &light_ray, &shadow)) { + /* accumulate */ + path_radiance_accum_light(L, throughput*num_samples_inv, &L_light, shadow, num_samples_inv, state->bounce, is_lamp); } } } + } - /* mesh light sampling */ - if(kernel_data.integrator.pdf_triangles != 0.0f) { - int num_samples = ceil_to_int(num_samples_adjust*kernel_data.integrator.mesh_light_samples); - float num_samples_inv = num_samples_adjust/num_samples; + /* mesh light sampling */ + if(kernel_data.integrator.pdf_triangles != 0.0f) { + int num_samples = ceil_to_int(num_samples_adjust*kernel_data.integrator.mesh_light_samples); + float num_samples_inv = num_samples_adjust/num_samples; - if(kernel_data.integrator.num_all_lights) - num_samples_inv *= 0.5f; + if(kernel_data.integrator.num_all_lights) + num_samples_inv *= 0.5f; - for(int j = 0; j < num_samples; j++) { - float light_t = path_branched_rng_1D(kg, rng, state, j, num_samples, PRNG_LIGHT); - float light_u, light_v; - path_branched_rng_2D(kg, rng, state, j, num_samples, PRNG_LIGHT_U, &light_u, &light_v); + for(int j = 0; j < num_samples; j++) { + float light_t = path_branched_rng_1D(kg, rng, state, j, num_samples, PRNG_LIGHT); + float light_u, light_v; + path_branched_rng_2D(kg, rng, state, j, num_samples, PRNG_LIGHT_U, &light_u, &light_v); - /* only sample triangle lights */ - if(kernel_data.integrator.num_all_lights) - light_t = 0.5f*light_t; + /* only sample triangle lights */ + if(kernel_data.integrator.num_all_lights) + light_t = 0.5f*light_t; - LightSample ls; - light_sample(kg, light_t, light_u, light_v, sd->time, sd->P, &ls); + LightSample ls; + light_sample(kg, light_t, light_u, light_v, sd->time, sd->P, &ls, false); - if(direct_emission(kg, sd, &ls, &light_ray, &L_light, &is_lamp, state->bounce, state->transparent_bounce)) { - /* trace shadow ray */ - float3 shadow; + if(direct_emission(kg, sd, &ls, &light_ray, &L_light, &is_lamp, state->bounce, state->transparent_bounce)) { + /* trace shadow ray */ + float3 shadow; - if(!shadow_blocked(kg, state, &light_ray, &shadow)) { - /* accumulate */ - path_radiance_accum_light(L, throughput*num_samples_inv, &L_light, shadow, num_samples_inv, state->bounce, is_lamp); - } + if(!shadow_blocked(kg, state, &light_ray, &shadow)) { + /* accumulate */ + path_radiance_accum_light(L, throughput*num_samples_inv, &L_light, shadow, num_samples_inv, state->bounce, is_lamp); } } } } - else { - float light_t = path_state_rng_1D(kg, rng, state, PRNG_LIGHT); - float light_u, light_v; - path_state_rng_2D(kg, rng, state, PRNG_LIGHT_U, &light_u, &light_v); - - LightSample ls; - light_sample(kg, light_t, light_u, light_v, sd->time, sd->P, &ls); - - /* sample random light */ - if(direct_emission(kg, sd, &ls, &light_ray, &L_light, &is_lamp, state->bounce, state->transparent_bounce)) { - /* trace shadow ray */ - float3 shadow; - - if(!shadow_blocked(kg, state, &light_ray, &shadow)) { - /* accumulate */ - path_radiance_accum_light(L, throughput, &L_light, shadow, num_samples_adjust, state->bounce, is_lamp); - } + } + else { + /* sample one light at random */ + float light_t = path_state_rng_1D(kg, rng, state, PRNG_LIGHT); + float light_u, light_v; + path_state_rng_2D(kg, rng, state, PRNG_LIGHT_U, &light_u, &light_v); + + LightSample ls; + light_sample(kg, light_t, light_u, light_v, sd->time, sd->P, &ls, false); + + /* sample random light */ + if(direct_emission(kg, sd, &ls, &light_ray, &L_light, &is_lamp, state->bounce, state->transparent_bounce)) { + /* trace shadow ray */ + float3 shadow; + + if(!shadow_blocked(kg, state, &light_ray, &shadow)) { + /* accumulate */ + path_radiance_accum_light(L, throughput, &L_light, shadow, num_samples_adjust, state->bounce, is_lamp); } } } +#endif } /* branched path tracing: bounce off or through surface to with new direction stored in ray */ @@ -196,7 +200,7 @@ ccl_device_inline void kernel_path_surface_connect_light(KernelGlobals *kg, RNG #endif LightSample ls; - light_sample(kg, light_t, light_u, light_v, sd->time, sd->P, &ls); + light_sample(kg, light_t, light_u, light_v, sd->time, sd->P, &ls, false); if(direct_emission(kg, sd, &ls, &light_ray, &L_light, &is_lamp, state->bounce, state->transparent_bounce)) { /* trace shadow ray */ |