forked from bartvdbraak/blender
84ad20acef
This commit re-shuffles code in split kernel once again and makes it so common parts which is in the headers is only responsible to making all the work needed for specified ray index. Getting ray index, checking for it's validity and enqueuing tasks are now happening in the device specified part of the kernel. This actually makes sense because enqueuing is indeed device-specified and i.e. with CUDA we'll want to enqueue kernels from kernel and avoid CPU roundtrip. TODO: - Kernel comments are still placed in the common header files, but since queue related stuff is not passed to those functions those comments might need to be split as well. Just currently read them considering that they're also covering the way how all devices are invoking the common code path. - Arguments might need to be wrapped into KernelGlobals, so we don't ened to pass all them around as function arguments.
85 lines
3.2 KiB
Common Lisp
85 lines
3.2 KiB
Common Lisp
/*
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* Copyright 2011-2015 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "split/kernel_lamp_emission.h"
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__kernel void kernel_ocl_path_trace_lamp_emission(
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ccl_global char *globals,
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ccl_constant KernelData *data,
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ccl_global char *shader_data, /* Required for lamp emission */
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ccl_global float3 *throughput_coop, /* Required for lamp emission */
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PathRadiance *PathRadiance_coop, /* Required for lamp emission */
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ccl_global Ray *Ray_coop, /* Required for lamp emission */
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ccl_global PathState *PathState_coop, /* Required for lamp emission */
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Intersection *Intersection_coop, /* Required for lamp emission */
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ccl_global char *ray_state, /* Denotes the state of each ray */
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int sw, int sh,
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ccl_global int *Queue_data, /* Memory for queues */
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ccl_global int *Queue_index, /* Tracks the number of elements in queues */
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int queuesize, /* Size (capacity) of queues */
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ccl_global char *use_queues_flag, /* Used to decide if this kernel should use
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* queues to fetch ray index
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*/
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int parallel_samples) /* Number of samples to be processed in parallel */
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{
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int x = get_global_id(0);
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int y = get_global_id(1);
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/* We will empty this queue in this kernel. */
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if(get_global_id(0) == 0 && get_global_id(1) == 0) {
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Queue_index[QUEUE_ACTIVE_AND_REGENERATED_RAYS] = 0;
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}
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/* Fetch use_queues_flag. */
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ccl_local char local_use_queues_flag;
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if(get_local_id(0) == 0 && get_local_id(1) == 0) {
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local_use_queues_flag = use_queues_flag[0];
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}
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barrier(CLK_LOCAL_MEM_FENCE);
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int ray_index;
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if(local_use_queues_flag) {
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int thread_index = get_global_id(1) * get_global_size(0) + get_global_id(0);
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ray_index = get_ray_index(thread_index,
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QUEUE_ACTIVE_AND_REGENERATED_RAYS,
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Queue_data,
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queuesize,
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1);
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if(ray_index == QUEUE_EMPTY_SLOT) {
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return;
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}
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} else {
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if(x < (sw * parallel_samples) && y < sh){
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ray_index = x + y * (sw * parallel_samples);
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} else {
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return;
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}
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}
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kernel_lamp_emission(globals,
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data,
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shader_data,
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throughput_coop,
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PathRadiance_coop,
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Ray_coop,
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PathState_coop,
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Intersection_coop,
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ray_state,
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sw, sh,
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use_queues_flag,
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parallel_samples,
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ray_index);
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}
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