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Diffstat (limited to 'intern/cycles/kernel/integrator/integrator_state_util.h')
| -rw-r--r-- | intern/cycles/kernel/integrator/integrator_state_util.h | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/intern/cycles/kernel/integrator/integrator_state_util.h b/intern/cycles/kernel/integrator/integrator_state_util.h new file mode 100644 index 00000000000..cdf412fe22f --- /dev/null +++ b/intern/cycles/kernel/integrator/integrator_state_util.h @@ -0,0 +1,273 @@ +/* + * Copyright 2011-2021 Blender Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma once + +#include "kernel/integrator/integrator_state.h" +#include "kernel/kernel_differential.h" + +CCL_NAMESPACE_BEGIN + +/* Ray */ + +ccl_device_forceinline void integrator_state_write_ray(INTEGRATOR_STATE_ARGS, + const Ray *ccl_restrict ray) +{ + INTEGRATOR_STATE_WRITE(ray, P) = ray->P; + INTEGRATOR_STATE_WRITE(ray, D) = ray->D; + INTEGRATOR_STATE_WRITE(ray, t) = ray->t; + INTEGRATOR_STATE_WRITE(ray, time) = ray->time; + INTEGRATOR_STATE_WRITE(ray, dP) = ray->dP; + INTEGRATOR_STATE_WRITE(ray, dD) = ray->dD; +} + +ccl_device_forceinline void integrator_state_read_ray(INTEGRATOR_STATE_CONST_ARGS, + Ray *ccl_restrict ray) +{ + ray->P = INTEGRATOR_STATE(ray, P); + ray->D = INTEGRATOR_STATE(ray, D); + ray->t = INTEGRATOR_STATE(ray, t); + ray->time = INTEGRATOR_STATE(ray, time); + ray->dP = INTEGRATOR_STATE(ray, dP); + ray->dD = INTEGRATOR_STATE(ray, dD); +} + +/* Shadow Ray */ + +ccl_device_forceinline void integrator_state_write_shadow_ray(INTEGRATOR_STATE_ARGS, + const Ray *ccl_restrict ray) +{ + INTEGRATOR_STATE_WRITE(shadow_ray, P) = ray->P; + INTEGRATOR_STATE_WRITE(shadow_ray, D) = ray->D; + INTEGRATOR_STATE_WRITE(shadow_ray, t) = ray->t; + INTEGRATOR_STATE_WRITE(shadow_ray, time) = ray->time; + INTEGRATOR_STATE_WRITE(shadow_ray, dP) = ray->dP; +} + +ccl_device_forceinline void integrator_state_read_shadow_ray(INTEGRATOR_STATE_CONST_ARGS, + Ray *ccl_restrict ray) +{ + ray->P = INTEGRATOR_STATE(shadow_ray, P); + ray->D = INTEGRATOR_STATE(shadow_ray, D); + ray->t = INTEGRATOR_STATE(shadow_ray, t); + ray->time = INTEGRATOR_STATE(shadow_ray, time); + ray->dP = INTEGRATOR_STATE(shadow_ray, dP); + ray->dD = differential_zero_compact(); +} + +/* Intersection */ + +ccl_device_forceinline void integrator_state_write_isect(INTEGRATOR_STATE_ARGS, + const Intersection *ccl_restrict isect) +{ + INTEGRATOR_STATE_WRITE(isect, t) = isect->t; + INTEGRATOR_STATE_WRITE(isect, u) = isect->u; + INTEGRATOR_STATE_WRITE(isect, v) = isect->v; + INTEGRATOR_STATE_WRITE(isect, object) = isect->object; + INTEGRATOR_STATE_WRITE(isect, prim) = isect->prim; + INTEGRATOR_STATE_WRITE(isect, type) = isect->type; +#ifdef __EMBREE__ + INTEGRATOR_STATE_WRITE(isect, Ng) = isect->Ng; +#endif +} + +ccl_device_forceinline void integrator_state_read_isect(INTEGRATOR_STATE_CONST_ARGS, + Intersection *ccl_restrict isect) +{ + isect->prim = INTEGRATOR_STATE(isect, prim); + isect->object = INTEGRATOR_STATE(isect, object); + isect->type = INTEGRATOR_STATE(isect, type); + isect->u = INTEGRATOR_STATE(isect, u); + isect->v = INTEGRATOR_STATE(isect, v); + isect->t = INTEGRATOR_STATE(isect, t); +#ifdef __EMBREE__ + isect->Ng = INTEGRATOR_STATE(isect, Ng); +#endif +} + +ccl_device_forceinline VolumeStack integrator_state_read_volume_stack(INTEGRATOR_STATE_CONST_ARGS, + int i) +{ + VolumeStack entry = {INTEGRATOR_STATE_ARRAY(volume_stack, i, object), + INTEGRATOR_STATE_ARRAY(volume_stack, i, shader)}; + return entry; +} + +ccl_device_forceinline void integrator_state_write_volume_stack(INTEGRATOR_STATE_ARGS, + int i, + VolumeStack entry) +{ + INTEGRATOR_STATE_ARRAY_WRITE(volume_stack, i, object) = entry.object; + INTEGRATOR_STATE_ARRAY_WRITE(volume_stack, i, shader) = entry.shader; +} + +ccl_device_forceinline bool integrator_state_volume_stack_is_empty(INTEGRATOR_STATE_CONST_ARGS) +{ + return (kernel_data.kernel_features & KERNEL_FEATURE_VOLUME) ? + INTEGRATOR_STATE_ARRAY(volume_stack, 0, shader) == SHADER_NONE : + true; +} + +/* Shadow Intersection */ + +ccl_device_forceinline void integrator_state_write_shadow_isect( + INTEGRATOR_STATE_ARGS, const Intersection *ccl_restrict isect, const int index) +{ + INTEGRATOR_STATE_ARRAY_WRITE(shadow_isect, index, t) = isect->t; + INTEGRATOR_STATE_ARRAY_WRITE(shadow_isect, index, u) = isect->u; + INTEGRATOR_STATE_ARRAY_WRITE(shadow_isect, index, v) = isect->v; + INTEGRATOR_STATE_ARRAY_WRITE(shadow_isect, index, object) = isect->object; + INTEGRATOR_STATE_ARRAY_WRITE(shadow_isect, index, prim) = isect->prim; + INTEGRATOR_STATE_ARRAY_WRITE(shadow_isect, index, type) = isect->type; +#ifdef __EMBREE__ + INTEGRATOR_STATE_ARRAY_WRITE(shadow_isect, index, Ng) = isect->Ng; +#endif +} + +ccl_device_forceinline void integrator_state_read_shadow_isect(INTEGRATOR_STATE_CONST_ARGS, + Intersection *ccl_restrict isect, + const int index) +{ + isect->prim = INTEGRATOR_STATE_ARRAY(shadow_isect, index, prim); + isect->object = INTEGRATOR_STATE_ARRAY(shadow_isect, index, object); + isect->type = INTEGRATOR_STATE_ARRAY(shadow_isect, index, type); + isect->u = INTEGRATOR_STATE_ARRAY(shadow_isect, index, u); + isect->v = INTEGRATOR_STATE_ARRAY(shadow_isect, index, v); + isect->t = INTEGRATOR_STATE_ARRAY(shadow_isect, index, t); +#ifdef __EMBREE__ + isect->Ng = INTEGRATOR_STATE_ARRAY(shadow_isect, index, Ng); +#endif +} + +ccl_device_forceinline void integrator_state_copy_volume_stack_to_shadow(INTEGRATOR_STATE_ARGS) +{ + if (kernel_data.kernel_features & KERNEL_FEATURE_VOLUME) { + for (int i = 0; i < INTEGRATOR_VOLUME_STACK_SIZE; i++) { + INTEGRATOR_STATE_ARRAY_WRITE(shadow_volume_stack, i, object) = INTEGRATOR_STATE_ARRAY( + volume_stack, i, object); + INTEGRATOR_STATE_ARRAY_WRITE(shadow_volume_stack, i, shader) = INTEGRATOR_STATE_ARRAY( + volume_stack, i, shader); + } + } +} + +ccl_device_forceinline VolumeStack +integrator_state_read_shadow_volume_stack(INTEGRATOR_STATE_CONST_ARGS, int i) +{ + VolumeStack entry = {INTEGRATOR_STATE_ARRAY(shadow_volume_stack, i, object), + INTEGRATOR_STATE_ARRAY(shadow_volume_stack, i, shader)}; + return entry; +} + +ccl_device_forceinline bool integrator_state_shadow_volume_stack_is_empty( + INTEGRATOR_STATE_CONST_ARGS) +{ + return (kernel_data.kernel_features & KERNEL_FEATURE_VOLUME) ? + INTEGRATOR_STATE_ARRAY(shadow_volume_stack, 0, shader) == SHADER_NONE : + true; +} + +ccl_device_forceinline void integrator_state_write_shadow_volume_stack(INTEGRATOR_STATE_ARGS, + int i, + VolumeStack entry) +{ + INTEGRATOR_STATE_ARRAY_WRITE(shadow_volume_stack, i, object) = entry.object; + INTEGRATOR_STATE_ARRAY_WRITE(shadow_volume_stack, i, shader) = entry.shader; +} + +#if defined(__KERNEL_GPU__) +ccl_device_inline void integrator_state_copy_only(const IntegratorState to_state, + const IntegratorState state) +{ + int index; + + /* Rely on the compiler to optimize out unused assignments and `while(false)`'s. */ + +# define KERNEL_STRUCT_BEGIN(name) \ + index = 0; \ + do { + +# define KERNEL_STRUCT_MEMBER(parent_struct, type, name, feature) \ + if (kernel_integrator_state.parent_struct.name != nullptr) { \ + kernel_integrator_state.parent_struct.name[to_state] = \ + kernel_integrator_state.parent_struct.name[state]; \ + } + +# define KERNEL_STRUCT_ARRAY_MEMBER(parent_struct, type, name, feature) \ + if (kernel_integrator_state.parent_struct[index].name != nullptr) { \ + kernel_integrator_state.parent_struct[index].name[to_state] = \ + kernel_integrator_state.parent_struct[index].name[state]; \ + } + +# define KERNEL_STRUCT_END(name) \ + } \ + while (false) \ + ; + +# define KERNEL_STRUCT_END_ARRAY(name, array_size) \ + ++index; \ + } \ + while (index < array_size) \ + ; + +# include "kernel/integrator/integrator_state_template.h" + +# undef KERNEL_STRUCT_BEGIN +# undef KERNEL_STRUCT_MEMBER +# undef KERNEL_STRUCT_ARRAY_MEMBER +# undef KERNEL_STRUCT_END +# undef KERNEL_STRUCT_END_ARRAY +} + +ccl_device_inline void integrator_state_move(const IntegratorState to_state, + const IntegratorState state) +{ + integrator_state_copy_only(to_state, state); + + INTEGRATOR_STATE_WRITE(path, queued_kernel) = 0; + INTEGRATOR_STATE_WRITE(shadow_path, queued_kernel) = 0; +} + +#endif + +/* NOTE: Leaves kernel scheduling information untouched. Use INIT semantic for one of the paths + * after this function. */ +ccl_device_inline void integrator_state_shadow_catcher_split(INTEGRATOR_STATE_ARGS) +{ +#if defined(__KERNEL_GPU__) + const IntegratorState to_state = atomic_fetch_and_add_uint32( + &kernel_integrator_state.next_shadow_catcher_path_index[0], 1); + + integrator_state_copy_only(to_state, state); + + kernel_integrator_state.path.flag[to_state] |= PATH_RAY_SHADOW_CATCHER_PASS; + + /* Sanity check: expect to split in the intersect-closest kernel, where there is no shadow ray + * and no sorting yet. */ + kernel_assert(INTEGRATOR_STATE(shadow_path, queued_kernel) == 0); + kernel_assert(kernel_integrator_state.sort_key_counter[INTEGRATOR_STATE(path, queued_kernel)] == + nullptr); +#else + + IntegratorStateCPU *ccl_restrict split_state = state + 1; + + *split_state = *state; + + split_state->path.flag |= PATH_RAY_SHADOW_CATCHER_PASS; +#endif +} + +CCL_NAMESPACE_END |