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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright 2011, Blender Foundation.
*/
#include "BLI_threads.h"
#include "BLT_translation.h"
#include "BKE_node.h"
#include "BKE_scene.h"
#include "COM_ExecutionSystem.h"
#include "COM_WorkScheduler.h"
#include "COM_compositor.h"
static struct {
bool is_initialized = false;
ThreadMutex mutex;
} g_compositor;
/* Make sure node tree has previews.
* Don't create previews in advance, this is done when adding preview operations.
* Reserved preview size is determined by render output for now. */
static void compositor_init_node_previews(const RenderData *render_data, bNodeTree *node_tree)
{
/* We fit the aspect into COM_PREVIEW_SIZE x COM_PREVIEW_SIZE image to avoid
* insane preview resolution, which might even overflow preview dimensions. */
const float aspect = render_data->xsch > 0 ?
(float)render_data->ysch / (float)render_data->xsch :
1.0f;
int preview_width, preview_height;
if (aspect < 1.0f) {
preview_width = blender::compositor::COM_PREVIEW_SIZE;
preview_height = (int)(blender::compositor::COM_PREVIEW_SIZE * aspect);
}
else {
preview_width = (int)(blender::compositor::COM_PREVIEW_SIZE / aspect);
preview_height = blender::compositor::COM_PREVIEW_SIZE;
}
BKE_node_preview_init_tree(node_tree, preview_width, preview_height, false);
}
static void compositor_reset_node_tree_status(bNodeTree *node_tree)
{
node_tree->progress(node_tree->prh, 0.0);
node_tree->stats_draw(node_tree->sdh, IFACE_("Compositing"));
}
void COM_execute(RenderData *render_data,
Scene *scene,
bNodeTree *node_tree,
int rendering,
const ColorManagedViewSettings *viewSettings,
const ColorManagedDisplaySettings *displaySettings,
const char *viewName)
{
/* Initialize mutex, TODO: this mutex init is actually not thread safe and
* should be done somewhere as part of blender startup, all the other
* initializations can be done lazily. */
if (!g_compositor.is_initialized) {
BLI_mutex_init(&g_compositor.mutex);
g_compositor.is_initialized = true;
}
BLI_mutex_lock(&g_compositor.mutex);
if (node_tree->test_break(node_tree->tbh)) {
/* During editing multiple compositor executions can be triggered.
* Make sure this is the most recent one. */
BLI_mutex_unlock(&g_compositor.mutex);
return;
}
compositor_init_node_previews(render_data, node_tree);
compositor_reset_node_tree_status(node_tree);
/* Initialize workscheduler. */
const bool use_opencl = (node_tree->flag & NTREE_COM_OPENCL) != 0;
blender::compositor::WorkScheduler::initialize(use_opencl, BKE_render_num_threads(render_data));
/* Execute. */
const bool twopass = (node_tree->flag & NTREE_TWO_PASS) && !rendering;
if (twopass) {
blender::compositor::ExecutionSystem fast_pass(
render_data, scene, node_tree, rendering, true, viewSettings, displaySettings, viewName);
fast_pass.execute();
if (node_tree->test_break(node_tree->tbh)) {
BLI_mutex_unlock(&g_compositor.mutex);
return;
}
}
blender::compositor::ExecutionSystem system(
render_data, scene, node_tree, rendering, false, viewSettings, displaySettings, viewName);
system.execute();
BLI_mutex_unlock(&g_compositor.mutex);
}
void COM_deinitialize()
{
if (g_compositor.is_initialized) {
BLI_mutex_lock(&g_compositor.mutex);
blender::compositor::WorkScheduler::deinitialize();
g_compositor.is_initialized = false;
BLI_mutex_unlock(&g_compositor.mutex);
BLI_mutex_end(&g_compositor.mutex);
}
}
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