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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.
*/
#pragma once
#include "BKE_global.h"
#include "BLI_rect.h"
#include "COM_MultiThreadedOperation.h"
#include "DNA_color_types.h"
#include "DNA_image_types.h"
namespace blender::compositor {
class PreviewOperation : public MultiThreadedOperation {
protected:
unsigned char *outputBuffer_;
/**
* \brief holds reference to the SDNA bNode, where this nodes will render the preview image for
*/
bNodePreview *preview_;
SocketReader *input_;
float divider_;
unsigned int defaultWidth_;
unsigned int defaultHeight_;
const ColorManagedViewSettings *viewSettings_;
const ColorManagedDisplaySettings *displaySettings_;
public:
PreviewOperation(const ColorManagedViewSettings *viewSettings,
const ColorManagedDisplaySettings *displaySettings,
unsigned int defaultWidth,
unsigned int defaultHeight);
void verifyPreview(bNodeInstanceHash *previews, bNodeInstanceKey key);
bool isOutputOperation(bool /*rendering*/) const override
{
return !G.background;
}
void initExecution() override;
void deinitExecution() override;
eCompositorPriority getRenderPriority() const override;
void executeRegion(rcti *rect, unsigned int tileNumber) override;
void determine_canvas(const rcti &preferred_area, rcti &r_area) override;
bool determineDependingAreaOfInterest(rcti *input,
ReadBufferOperation *readOperation,
rcti *output) override;
void get_area_of_interest(int input_idx, const rcti &output_area, rcti &r_input_area) override;
void update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs) override;
};
} // namespace blender::compositor
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