forked from bartvdbraak/blender
0579eaae1f
The idea is to make include statements more explicit and obvious where the file is coming from, additionally reducing chance of wrong header being picked up. For example, it was not obvious whether bvh.h was refferring to builder or traversal, whenter node.h is a generic graph node or a shader node and cases like that. Surely this might look obvious for the active developers, but after some time of not touching the code it becomes less obvious where file is coming from. This was briefly mentioned in T50824 and seems @brecht is fine with such explicitness, but need to agree with all active developers before committing this. Please note that this patch is lacking changes related on GPU/OpenCL support. This will be solved if/when we all agree this is a good idea to move forward. Reviewers: brecht, lukasstockner97, maiself, nirved, dingto, juicyfruit, swerner Reviewed By: lukasstockner97, maiself, nirved, dingto Subscribers: brecht Differential Revision: https://developer.blender.org/D2586
154 lines
5.2 KiB
C
154 lines
5.2 KiB
C
/*
|
|
* Copyright 2011-2015 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.
|
|
*/
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
/* This kernel Initializes structures needed in path-iteration kernels.
|
|
*
|
|
* Note on Queues:
|
|
* All slots in queues are initialized to queue empty slot;
|
|
* The number of elements in the queues is initialized to 0;
|
|
*/
|
|
|
|
/* Distributes an amount of work across all threads
|
|
* note: work done inside the loop may not show up to all threads till after
|
|
* the current kernel has completed
|
|
*/
|
|
#define parallel_for(kg, iter_name, work_size) \
|
|
for(size_t _size = (work_size), \
|
|
_global_size = ccl_global_size(0) * ccl_global_size(1), \
|
|
_n = _size / _global_size, \
|
|
_thread = ccl_global_id(0) + ccl_global_id(1) * ccl_global_size(0), \
|
|
iter_name = (_n > 0) ? (_thread * _n) : (_thread) \
|
|
; \
|
|
(iter_name < (_thread+1) * _n) || (iter_name == _n * _global_size + _thread && _thread < _size % _global_size) \
|
|
; \
|
|
iter_name = (iter_name != (_thread+1) * _n - 1) ? (iter_name + 1) : (_n * _global_size + _thread) \
|
|
)
|
|
|
|
#ifndef __KERNEL_CPU__
|
|
ccl_device void kernel_data_init(
|
|
#else
|
|
void KERNEL_FUNCTION_FULL_NAME(data_init)(
|
|
#endif
|
|
KernelGlobals *kg,
|
|
ccl_constant KernelData *data,
|
|
ccl_global void *split_data_buffer,
|
|
int num_elements,
|
|
ccl_global char *ray_state,
|
|
ccl_global uint *rng_state,
|
|
|
|
#ifdef __KERNEL_OPENCL__
|
|
#define KERNEL_TEX(type, ttype, name) \
|
|
ccl_global type *name,
|
|
#include "kernel/kernel_textures.h"
|
|
#endif
|
|
|
|
int start_sample,
|
|
int end_sample,
|
|
int sx, int sy, int sw, int sh, int offset, int stride,
|
|
ccl_global int *Queue_index, /* Tracks the number of elements in queues */
|
|
int queuesize, /* size (capacity) of the queue */
|
|
ccl_global char *use_queues_flag, /* flag to decide if scene-intersect kernel should use queues to fetch ray index */
|
|
ccl_global unsigned int *work_pools, /* Work pool for each work group */
|
|
unsigned int num_samples,
|
|
ccl_global float *buffer)
|
|
{
|
|
#ifdef __KERNEL_OPENCL__
|
|
kg->data = data;
|
|
#endif
|
|
|
|
kernel_split_params.x = sx;
|
|
kernel_split_params.y = sy;
|
|
kernel_split_params.w = sw;
|
|
kernel_split_params.h = sh;
|
|
|
|
kernel_split_params.offset = offset;
|
|
kernel_split_params.stride = stride;
|
|
|
|
kernel_split_params.rng_state = rng_state;
|
|
|
|
kernel_split_params.start_sample = start_sample;
|
|
kernel_split_params.end_sample = end_sample;
|
|
|
|
kernel_split_params.work_pools = work_pools;
|
|
kernel_split_params.num_samples = num_samples;
|
|
|
|
kernel_split_params.queue_index = Queue_index;
|
|
kernel_split_params.queue_size = queuesize;
|
|
kernel_split_params.use_queues_flag = use_queues_flag;
|
|
|
|
kernel_split_params.buffer = buffer;
|
|
|
|
split_data_init(kg, &kernel_split_state, num_elements, split_data_buffer, ray_state);
|
|
|
|
#ifdef __KERNEL_OPENCL__
|
|
#define KERNEL_TEX(type, ttype, name) \
|
|
kg->name = name;
|
|
#include "kernel/kernel_textures.h"
|
|
#endif
|
|
|
|
int thread_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
|
|
|
|
/* Initialize queue data and queue index. */
|
|
if(thread_index < queuesize) {
|
|
/* Initialize active ray queue. */
|
|
kernel_split_state.queue_data[QUEUE_ACTIVE_AND_REGENERATED_RAYS * queuesize + thread_index] = QUEUE_EMPTY_SLOT;
|
|
/* Initialize background and buffer update queue. */
|
|
kernel_split_state.queue_data[QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS * queuesize + thread_index] = QUEUE_EMPTY_SLOT;
|
|
/* Initialize shadow ray cast of AO queue. */
|
|
kernel_split_state.queue_data[QUEUE_SHADOW_RAY_CAST_AO_RAYS * queuesize + thread_index] = QUEUE_EMPTY_SLOT;
|
|
/* Initialize shadow ray cast of direct lighting queue. */
|
|
kernel_split_state.queue_data[QUEUE_SHADOW_RAY_CAST_DL_RAYS * queuesize + thread_index] = QUEUE_EMPTY_SLOT;
|
|
}
|
|
|
|
if(thread_index == 0) {
|
|
Queue_index[QUEUE_ACTIVE_AND_REGENERATED_RAYS] = 0;
|
|
Queue_index[QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS] = 0;
|
|
Queue_index[QUEUE_SHADOW_RAY_CAST_AO_RAYS] = 0;
|
|
Queue_index[QUEUE_SHADOW_RAY_CAST_DL_RAYS] = 0;
|
|
/* The scene-intersect kernel should not use the queues very first time.
|
|
* since the queue would be empty.
|
|
*/
|
|
*use_queues_flag = 0;
|
|
}
|
|
|
|
/* zero the tiles pixels and initialize rng_state if this is the first sample */
|
|
if(start_sample == 0) {
|
|
parallel_for(kg, i, sw * sh * kernel_data.film.pass_stride) {
|
|
int pixel = i / kernel_data.film.pass_stride;
|
|
int pass = i % kernel_data.film.pass_stride;
|
|
|
|
int x = sx + pixel % sw;
|
|
int y = sy + pixel / sw;
|
|
|
|
int index = (offset + x + y*stride) * kernel_data.film.pass_stride + pass;
|
|
|
|
*(buffer + index) = 0.0f;
|
|
}
|
|
|
|
parallel_for(kg, i, sw * sh) {
|
|
int x = sx + i % sw;
|
|
int y = sy + i / sw;
|
|
|
|
int index = (offset + x + y*stride);
|
|
*(rng_state + index) = hash_int_2d(x, y);
|
|
}
|
|
}
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|