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/*
* Copyright 2011, Blender Foundation.
*
* 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.
*/
#ifndef __TILE_H__
#define __TILE_H__
#include <limits.h>
#include "buffers.h"
#include "util_list.h"
CCL_NAMESPACE_BEGIN
/* Tile */
class Tile {
public:
int index;
int x, y, w, h;
int device;
bool rendering;
Tile()
{}
Tile(int index_, int x_, int y_, int w_, int h_, int device_)
: index(index_), x(x_), y(y_), w(w_), h(h_), device(device_), rendering(false) {}
};
/* Tile Manager */
class TileManager {
public:
BufferParams params;
struct State {
BufferParams buffer;
int sample;
int num_samples;
int resolution_divider;
int num_tiles;
int num_rendered_tiles;
list<Tile> tiles;
} state;
int num_samples;
TileManager(bool progressive, int num_samples, int2 tile_size, int start_resolution,
bool preserve_tile_device, bool background, int tile_order, int num_devices = 1);
~TileManager();
void reset(BufferParams& params, int num_samples);
void set_samples(int num_samples);
bool next();
bool next_tile(Tile& tile, int device = 0);
bool done();
void set_tile_order(int tile_order_) { tile_order = tile_order_; }
protected:
/* Note: this should match enum_tile_order in properties.py */
enum {
CENTER = 0,
RIGHT_TO_LEFT = 1,
LEFT_TO_RIGHT = 2,
TOP_TO_BOTTOM = 3,
BOTTOM_TO_TOP = 4
} TileOrder;
void set_tiles();
bool progressive;
int2 tile_size;
int tile_order;
int start_resolution;
int num_devices;
/* in some cases it is important that the same tile will be returned for the same
* device it was originally generated for (i.e. viewport rendering when buffer is
* allocating once for tile and then always used by it)
*
* in other cases any tile could be handled by any device (i.e. final rendering
* without progressive refine)
*/
bool preserve_tile_device;
/* for background render tiles should exactly match render parts generated from
* blender side, which means image first gets split into tiles and then tiles are
* assigning to render devices
*
* however viewport rendering expects tiles to be allocated in a special way,
* meaning image is being sliced horizontally first and every device handles
* it's own slice
*/
bool background;
/* splits image into tiles and assigns equal amount of tiles to every render device */
void gen_tiles_global();
/* slices image into as much pieces as how many devices are rendering this image */
void gen_tiles_sliced();
/* returns tiles for background render */
list<Tile>::iterator next_background_tile(int device, int tile_order);
/* returns first unhandled tile for viewport render */
list<Tile>::iterator next_viewport_tile(int device);
};
CCL_NAMESPACE_END
#endif /* __TILE_H__ */
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