Differential D2217 Diff 7716 intern/cycles/kernel/kernel_path_surface.h

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intern/cycles/kernel/kernel_path_surface.h

Show First 20 Lines • Show All 43 Lines • ▼ Show 20 Lines	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));		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);		float num_samples_inv = num_samples_adjust/(num_samples*kernel_data.integrator.num_all_lights);
RNG lamp_rng = cmj_hash(*rng, i);		RNG lamp_rng = cmj_hash(*rng, i);

for(int j = 0; j < num_samples; j++) {		for(int j = 0; j < num_samples; j++) {
float light_u, light_v;		float light_u, light_v;
path_branched_rng_2D(kg, &lamp_rng, state, j, num_samples, PRNG_LIGHT_U, &light_u, &light_v);		path_branched_rng_2D(kg, &lamp_rng, state, j, num_samples, PRNG_LIGHT_U, &light_u, &light_v);
		float terminate = path_branched_rng_light_termination(kg, &lamp_rng, state, j, num_samples);

LightSample ls;		LightSample ls;
if(lamp_light_sample(kg, i, light_u, light_v, ccl_fetch(sd, P), &ls)) {		if(lamp_light_sample(kg, i, light_u, light_v, ccl_fetch(sd, P), &ls)) {
/* The sampling probability returned by lamp_light_sample assumes that all lights were sampled.		/* The sampling probability returned by lamp_light_sample assumes that all lights were sampled.
* However, this code only samples lamps, so if the scene also had mesh lights, the real probability is twice as high. */		* However, this code only samples lamps, so if the scene also had mesh lights, the real probability is twice as high. */
if(kernel_data.integrator.pdf_triangles != 0.0f)		if(kernel_data.integrator.pdf_triangles != 0.0f)
ls.pdf *= 2.0f;		ls.pdf *= 2.0f;

if(direct_emission(kg, sd, emission_sd, &ls, state, &light_ray, &L_light, &is_lamp)) {		if(direct_emission(kg, sd, emission_sd, &ls, state, &light_ray, &L_light, &is_lamp, terminate)) {
/* trace shadow ray */		/* trace shadow ray */
float3 shadow;		float3 shadow;

if(!shadow_blocked(kg, emission_sd, state, &light_ray, &shadow)) {		if(!shadow_blocked(kg, emission_sd, state, &light_ray, &shadow)) {
/* accumulate */		/* accumulate */
path_radiance_accum_light(L, throughput*num_samples_inv, &L_light, shadow, num_samples_inv, state->bounce, is_lamp);		path_radiance_accum_light(L, throughput*num_samples_inv, &L_light, shadow, num_samples_inv, state->bounce, is_lamp);
}		}
}		}
}		}
}		}
}		}

/* mesh light sampling */		/* mesh light sampling */
if(kernel_data.integrator.pdf_triangles != 0.0f) {		if(kernel_data.integrator.pdf_triangles != 0.0f) {
int num_samples = ceil_to_int(num_samples_adjust*kernel_data.integrator.mesh_light_samples);		int num_samples = ceil_to_int(num_samples_adjust*kernel_data.integrator.mesh_light_samples);
float num_samples_inv = num_samples_adjust/num_samples;		float num_samples_inv = num_samples_adjust/num_samples;

for(int j = 0; j < num_samples; j++) {		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_t = path_branched_rng_1D(kg, rng, state, j, num_samples, PRNG_LIGHT);
float light_u, light_v;		float light_u, light_v;
path_branched_rng_2D(kg, rng, state, j, num_samples, PRNG_LIGHT_U, &light_u, &light_v);		path_branched_rng_2D(kg, rng, state, j, num_samples, PRNG_LIGHT_U, &light_u, &light_v);
		float terminate = path_branched_rng_light_termination(kg, rng, state, j, num_samples);

/* only sample triangle lights */		/* only sample triangle lights */
if(kernel_data.integrator.num_all_lights)		if(kernel_data.integrator.num_all_lights)
light_t = 0.5f*light_t;		light_t = 0.5f*light_t;

LightSample ls;		LightSample ls;
if(light_sample(kg, light_t, light_u, light_v, ccl_fetch(sd, time), ccl_fetch(sd, P), state->bounce, &ls)) {		if(light_sample(kg, light_t, light_u, light_v, ccl_fetch(sd, time), ccl_fetch(sd, P), state->bounce, &ls)) {
/* Same as above, probability needs to be corrected since the sampling was forced to select a mesh light. */		/* Same as above, probability needs to be corrected since the sampling was forced to select a mesh light. */
if(kernel_data.integrator.num_all_lights)		if(kernel_data.integrator.num_all_lights)
ls.pdf *= 2.0f;		ls.pdf *= 2.0f;

if(direct_emission(kg, sd, emission_sd, &ls, state, &light_ray, &L_light, &is_lamp)) {		if(direct_emission(kg, sd, emission_sd, &ls, state, &light_ray, &L_light, &is_lamp, terminate)) {
/* trace shadow ray */		/* trace shadow ray */
float3 shadow;		float3 shadow;

if(!shadow_blocked(kg, emission_sd, state, &light_ray, &shadow)) {		if(!shadow_blocked(kg, emission_sd, state, &light_ray, &shadow)) {
/* accumulate */		/* accumulate */
path_radiance_accum_light(L, throughput*num_samples_inv, &L_light, shadow, num_samples_inv, state->bounce, is_lamp);		path_radiance_accum_light(L, throughput*num_samples_inv, &L_light, shadow, num_samples_inv, state->bounce, is_lamp);
}		}
}		}
}		}
}		}
}		}
}		}
else {		else {
/* sample one light at random */		/* sample one light at random */
float light_t = path_state_rng_1D(kg, rng, state, PRNG_LIGHT);		float light_t = path_state_rng_1D(kg, rng, state, PRNG_LIGHT);
float light_u, light_v;		float light_u, light_v;
path_state_rng_2D(kg, rng, state, PRNG_LIGHT_U, &light_u, &light_v);		path_state_rng_2D(kg, rng, state, PRNG_LIGHT_U, &light_u, &light_v);
		float terminate = path_state_rng_light_termination(kg, rng, state);

LightSample ls;		LightSample ls;
if(light_sample(kg, light_t, light_u, light_v, ccl_fetch(sd, time), ccl_fetch(sd, P), state->bounce, &ls)) {		if(light_sample(kg, light_t, light_u, light_v, ccl_fetch(sd, time), ccl_fetch(sd, P), state->bounce, &ls)) {
/* sample random light */		/* sample random light */
if(direct_emission(kg, sd, emission_sd, &ls, state, &light_ray, &L_light, &is_lamp)) {		if(direct_emission(kg, sd, emission_sd, &ls, state, &light_ray, &L_light, &is_lamp, terminate)) {
/* trace shadow ray */		/* trace shadow ray */
float3 shadow;		float3 shadow;

if(!shadow_blocked(kg, emission_sd, state, &light_ray, &shadow)) {		if(!shadow_blocked(kg, emission_sd, state, &light_ray, &shadow)) {
/* accumulate */		/* accumulate */
path_radiance_accum_light(L, throughput*num_samples_adjust, &L_light, shadow, num_samples_adjust, state->bounce, is_lamp);		path_radiance_accum_light(L, throughput*num_samples_adjust, &L_light, shadow, num_samples_adjust, state->bounce, is_lamp);
}		}
}		}
▲ Show 20 Lines • Show All 81 Lines • ▼ Show 20 Lines	#ifdef __EMISSION__
bool is_lamp;		bool is_lamp;

#ifdef __OBJECT_MOTION__		#ifdef __OBJECT_MOTION__
light_ray.time = ccl_fetch(sd, time);		light_ray.time = ccl_fetch(sd, time);
#endif		#endif

LightSample ls;		LightSample ls;
if(light_sample(kg, light_t, light_u, light_v, ccl_fetch(sd, time), ccl_fetch(sd, P), state->bounce, &ls)) {		if(light_sample(kg, light_t, light_u, light_v, ccl_fetch(sd, time), ccl_fetch(sd, P), state->bounce, &ls)) {
if(direct_emission(kg, sd, emission_sd, &ls, state, &light_ray, &L_light, &is_lamp)) {		float terminate = path_state_rng_light_termination(kg, rng, state);
		if(direct_emission(kg, sd, emission_sd, &ls, state, &light_ray, &L_light, &is_lamp, terminate)) {
/* trace shadow ray */		/* trace shadow ray */
float3 shadow;		float3 shadow;

if(!shadow_blocked(kg, emission_sd, state, &light_ray, &shadow)) {		if(!shadow_blocked(kg, emission_sd, state, &light_ray, &shadow)) {
/* accumulate */		/* accumulate */
path_radiance_accum_light(L, throughput, &L_light, shadow, 1.0f, state->bounce, is_lamp);		path_radiance_accum_light(L, throughput, &L_light, shadow, 1.0f, state->bounce, is_lamp);
}		}
}		}
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