blender/intern/cycles/render/tile.h
Sergey Sharybin 3b88a29abf Cycles: progressive refine option
Just makes progressive refine :)

This means the whole image would be refined gradually using as much
threads as it's set in performance settings. Having enough tiles is
required to have this option working as it's expected.

Technically it's implemented by repeatedly computing next sample for
all the tiles before switching to next sample.

This works around 7-12% slower than regular tile-based rendering, so
use this option only if you really need it.

This commit also fixes progressive update of image when Save Buffers
option is enabled.

And one more thing this commit fixes is handling display buffer with
Save Buffers option enabled. If this option is enabled image buffer
wouldn't have neither byte nor float buffer until image is fully
rendered which could backfire in missing image while rendering in
cases color management cache became full.

This issue solved by allocating byte buffer for image buffer from
tile update callback.

Patch was reviewed by Brecht. He also made some minor edits to
original version to patch. Thanks, man!
2012-10-13 12:38:32 +00:00

87 lines
1.9 KiB
C++

/*
* 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 x, y, w, h;
int device;
bool rendering;
Tile()
{}
Tile(int x_, int y_, int w_, int h_, int device_)
: 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;
int tile_w;
int tile_h;
list<Tile> tiles;
} state;
TileManager(bool progressive, int num_samples, int2 tile_size, int start_resolution, 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();
protected:
void set_tiles();
bool progressive;
int num_samples;
int2 tile_size;
int start_resolution;
int num_devices;
list<Tile>::iterator next_center_tile(int device = 0);
};
CCL_NAMESPACE_END
#endif /* __TILE_H__ */