diff options
Diffstat (limited to 'intern/cycles/kernel/split/kernel_background_buffer_update.h')
-rw-r--r-- | intern/cycles/kernel/split/kernel_background_buffer_update.h | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/intern/cycles/kernel/split/kernel_background_buffer_update.h b/intern/cycles/kernel/split/kernel_background_buffer_update.h deleted file mode 100644 index 9bfa71c75ef..00000000000 --- a/intern/cycles/kernel/split/kernel_background_buffer_update.h +++ /dev/null @@ -1,248 +0,0 @@ -/* - * 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. - */ - -#include "kernel_split_common.h" - -/* Note on kernel_background_buffer_update kernel. - * This is the fourth kernel in the ray tracing logic, and the third - * of the path iteration kernels. This kernel takes care of rays that hit - * the background (sceneintersect kernel), and for the rays of - * state RAY_UPDATE_BUFFER it updates the ray's accumulated radiance in - * the output buffer. This kernel also takes care of rays that have been determined - * to-be-regenerated. - * - * We will empty QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS queue in this kernel - * - * Typically all rays that are in state RAY_HIT_BACKGROUND, RAY_UPDATE_BUFFER - * will be eventually set to RAY_TO_REGENERATE state in this kernel. Finally all rays of ray_state - * RAY_TO_REGENERATE will be regenerated and put in queue QUEUE_ACTIVE_AND_REGENERATED_RAYS. - * - * The input and output are as follows, - * - * rng_coop ---------------------------------------------|--- kernel_background_buffer_update --|--- PathRadiance_coop - * throughput_coop --------------------------------------| |--- L_transparent_coop - * per_sample_output_buffers ----------------------------| |--- per_sample_output_buffers - * Ray_coop ---------------------------------------------| |--- ray_state - * PathState_coop ---------------------------------------| |--- Queue_data (QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS) - * L_transparent_coop -----------------------------------| |--- Queue_data (QUEUE_ACTIVE_AND_REGENERATED_RAYS) - * ray_state --------------------------------------------| |--- Queue_index (QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS) - * Queue_data (QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS) ----| |--- Queue_index (QUEUE_ACTIVE_AND_REGENERATED_RAYS) - * Queue_index (QUEUE_ACTIVE_AND_REGENERATED_RAYS) ------| |--- work_array - * parallel_samples -------------------------------------| |--- PathState_coop - * end_sample -------------------------------------------| |--- throughput_coop - * kg (globals) -----------------------------------------| |--- rng_coop - * rng_state --------------------------------------------| |--- Ray - * PathRadiance_coop ------------------------------------| | - * sw ---------------------------------------------------| | - * sh ---------------------------------------------------| | - * sx ---------------------------------------------------| | - * sy ---------------------------------------------------| | - * stride -----------------------------------------------| | - * work_array -------------------------------------------| |--- work_array - * queuesize --------------------------------------------| | - * start_sample -----------------------------------------| |--- work_pool_wgs - * work_pool_wgs ----------------------------------------| | - * num_samples ------------------------------------------| | - * - * note on sd : sd argument is neither an input nor an output for this kernel. It is just filled and consumed here itself. - * Note on Queues : - * This kernel fetches rays from QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS queue. - * - * State of queues when this kernel is called : - * At entry, - * QUEUE_ACTIVE_AND_REGENERATED_RAYS will be filled with RAY_ACTIVE rays - * QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS will be filled with RAY_UPDATE_BUFFER, RAY_HIT_BACKGROUND, RAY_TO_REGENERATE rays - * At exit, - * QUEUE_ACTIVE_AND_REGENERATED_RAYS will be filled with RAY_ACTIVE and RAY_REGENERATED rays - * QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS will be empty - */ -ccl_device char kernel_background_buffer_update( - KernelGlobals *kg, - ccl_global float *per_sample_output_buffers, - ccl_global uint *rng_state, - ccl_global uint *rng_coop, /* Required for buffer Update */ - ccl_global float3 *throughput_coop, /* Required for background hit processing */ - PathRadiance *PathRadiance_coop, /* Required for background hit processing and buffer Update */ - ccl_global Ray *Ray_coop, /* Required for background hit processing */ - ccl_global PathState *PathState_coop, /* Required for background hit processing */ - ccl_global float *L_transparent_coop, /* Required for background hit processing and buffer Update */ - ccl_global char *ray_state, /* Stores information on the current state of a ray */ - int sw, int sh, int sx, int sy, int stride, - int rng_state_offset_x, - int rng_state_offset_y, - int rng_state_stride, - ccl_global unsigned int *work_array, /* Denotes work of each ray */ - int end_sample, - int start_sample, -#ifdef __WORK_STEALING__ - ccl_global unsigned int *work_pool_wgs, - unsigned int num_samples, -#endif -#ifdef __KERNEL_DEBUG__ - DebugData *debugdata_coop, -#endif - int parallel_samples, /* Number of samples to be processed in parallel */ - int ray_index) -{ - char enqueue_flag = 0; -#ifdef __KERNEL_DEBUG__ - DebugData *debug_data = &debugdata_coop[ray_index]; -#endif - ccl_global PathState *state = &PathState_coop[ray_index]; - PathRadiance *L = L = &PathRadiance_coop[ray_index]; - ccl_global Ray *ray = &Ray_coop[ray_index]; - ccl_global float3 *throughput = &throughput_coop[ray_index]; - ccl_global float *L_transparent = &L_transparent_coop[ray_index]; - ccl_global uint *rng = &rng_coop[ray_index]; - -#ifdef __WORK_STEALING__ - unsigned int my_work; - ccl_global float *initial_per_sample_output_buffers; - ccl_global uint *initial_rng; -#endif - unsigned int sample; - unsigned int tile_x; - unsigned int tile_y; - unsigned int pixel_x; - unsigned int pixel_y; - unsigned int my_sample_tile; - -#ifdef __WORK_STEALING__ - my_work = work_array[ray_index]; - sample = get_my_sample(my_work, sw, sh, parallel_samples, ray_index) + start_sample; - get_pixel_tile_position(&pixel_x, &pixel_y, - &tile_x, &tile_y, - my_work, - sw, sh, sx, sy, - parallel_samples, - ray_index); - my_sample_tile = 0; - initial_per_sample_output_buffers = per_sample_output_buffers; - initial_rng = rng_state; -#else /* __WORK_STEALING__ */ - sample = work_array[ray_index]; - int tile_index = ray_index / parallel_samples; - /* buffer and rng_state's stride is "stride". Find x and y using ray_index */ - tile_x = tile_index % sw; - tile_y = tile_index / sw; - my_sample_tile = ray_index - (tile_index * parallel_samples); -#endif /* __WORK_STEALING__ */ - - rng_state += (rng_state_offset_x + tile_x) + (rng_state_offset_y + tile_y) * rng_state_stride; - per_sample_output_buffers += (((tile_x + (tile_y * stride)) * parallel_samples) + my_sample_tile) * kernel_data.film.pass_stride; - - if(IS_STATE(ray_state, ray_index, RAY_HIT_BACKGROUND)) { - /* eval background shader if nothing hit */ - if(kernel_data.background.transparent && (state->flag & PATH_RAY_CAMERA)) { - *L_transparent = (*L_transparent) + average((*throughput)); -#ifdef __PASSES__ - if(!(kernel_data.film.pass_flag & PASS_BACKGROUND)) -#endif - ASSIGN_RAY_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER); - } - - if(IS_STATE(ray_state, ray_index, RAY_HIT_BACKGROUND)) { -#ifdef __BACKGROUND__ - /* sample background shader */ - float3 L_background = indirect_background(kg, kg->sd_input, state, ray); - path_radiance_accum_background(L, (*throughput), L_background, state->bounce); -#endif - ASSIGN_RAY_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER); - } - } - - if(IS_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER)) { - float3 L_sum = path_radiance_clamp_and_sum(kg, L); - kernel_write_light_passes(kg, per_sample_output_buffers, L, sample); -#ifdef __KERNEL_DEBUG__ - kernel_write_debug_passes(kg, per_sample_output_buffers, state, debug_data, sample); -#endif - float4 L_rad = make_float4(L_sum.x, L_sum.y, L_sum.z, 1.0f - (*L_transparent)); - - /* accumulate result in output buffer */ - kernel_write_pass_float4(per_sample_output_buffers, sample, L_rad); - path_rng_end(kg, rng_state, *rng); - - ASSIGN_RAY_STATE(ray_state, ray_index, RAY_TO_REGENERATE); - } - - if(IS_STATE(ray_state, ray_index, RAY_TO_REGENERATE)) { -#ifdef __WORK_STEALING__ - /* We have completed current work; So get next work */ - int valid_work = get_next_work(work_pool_wgs, &my_work, sw, sh, num_samples, parallel_samples, ray_index); - if(!valid_work) { - /* If work is invalid, this means no more work is available and the thread may exit */ - ASSIGN_RAY_STATE(ray_state, ray_index, RAY_INACTIVE); - } -#else /* __WORK_STEALING__ */ - if((sample + parallel_samples) >= end_sample) { - ASSIGN_RAY_STATE(ray_state, ray_index, RAY_INACTIVE); - } -#endif /* __WORK_STEALING__ */ - - if(IS_STATE(ray_state, ray_index, RAY_TO_REGENERATE)) { -#ifdef __WORK_STEALING__ - work_array[ray_index] = my_work; - /* Get the sample associated with the current work */ - sample = get_my_sample(my_work, sw, sh, parallel_samples, ray_index) + start_sample; - /* Get pixel and tile position associated with current work */ - get_pixel_tile_position(&pixel_x, &pixel_y, &tile_x, &tile_y, my_work, sw, sh, sx, sy, parallel_samples, ray_index); - my_sample_tile = 0; - - /* Remap rng_state according to the current work */ - rng_state = initial_rng + ((rng_state_offset_x + tile_x) + (rng_state_offset_y + tile_y) * rng_state_stride); - /* Remap per_sample_output_buffers according to the current work */ - per_sample_output_buffers = initial_per_sample_output_buffers - + (((tile_x + (tile_y * stride)) * parallel_samples) + my_sample_tile) * kernel_data.film.pass_stride; -#else /* __WORK_STEALING__ */ - work_array[ray_index] = sample + parallel_samples; - sample = work_array[ray_index]; - - /* Get ray position from ray index */ - pixel_x = sx + ((ray_index / parallel_samples) % sw); - pixel_y = sy + ((ray_index / parallel_samples) / sw); -#endif /* __WORK_STEALING__ */ - - /* Initialize random numbers and ray. */ - kernel_path_trace_setup(kg, rng_state, sample, pixel_x, pixel_y, rng, ray); - - if(ray->t != 0.0f) { - /* Initialize throughput, L_transparent, Ray, PathState; - * These rays proceed with path-iteration. - */ - *throughput = make_float3(1.0f, 1.0f, 1.0f); - *L_transparent = 0.0f; - path_radiance_init(L, kernel_data.film.use_light_pass); - path_state_init(kg, kg->sd_input, state, rng, sample, ray); -#ifdef __KERNEL_DEBUG__ - debug_data_init(debug_data); -#endif - ASSIGN_RAY_STATE(ray_state, ray_index, RAY_REGENERATED); - enqueue_flag = 1; - } - else { - /* These rays do not participate in path-iteration. */ - float4 L_rad = make_float4(0.0f, 0.0f, 0.0f, 0.0f); - /* Accumulate result in output buffer. */ - kernel_write_pass_float4(per_sample_output_buffers, sample, L_rad); - path_rng_end(kg, rng_state, *rng); - - ASSIGN_RAY_STATE(ray_state, ray_index, RAY_TO_REGENERATE); - } - } - } - return enqueue_flag; -} |