7c8f82a174
save memory during render and cache render results. Implementation notes: In the render engine API it's now possible to get the render result for one render layer only, and retrieve the expected tile size in case save buffers is used. This is needed because EXR expects tiles with particular size and coordinates. The EXR temporary files are now also separated per layer, since Cycles can't give the full render result for all render layers, and EXR doesn't support writing parts of tiles. In Cycles internally the handling of render buffers and multi GPU rendering in particular changed quite a bit, and could use a bit more refactoring to make things more consistent and simple.
162 lines
3.7 KiB
C++
162 lines
3.7 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "tile.h"
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#include "util_algorithm.h"
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CCL_NAMESPACE_BEGIN
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TileManager::TileManager(bool progressive_, int num_samples_, int2 tile_size_, int min_size_, int num_devices_)
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{
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progressive = progressive_;
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tile_size = tile_size_;
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min_size = min_size_;
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num_devices = num_devices_;
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BufferParams buffer_params;
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reset(buffer_params, 0);
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}
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TileManager::~TileManager()
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{
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}
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void TileManager::reset(BufferParams& params_, int num_samples_)
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{
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params = params_;
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start_resolution = 1;
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int w = params.width, h = params.height;
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if(min_size != INT_MAX) {
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while(w*h > min_size*min_size) {
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w = max(1, w/2);
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h = max(1, h/2);
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start_resolution *= 2;
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}
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}
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num_samples = num_samples_;
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state.buffer = BufferParams();
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state.sample = -1;
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state.num_tiles = 0;
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state.num_samples = 0;
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state.resolution = start_resolution;
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state.tiles.clear();
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}
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void TileManager::set_samples(int num_samples_)
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{
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num_samples = num_samples_;
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}
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void TileManager::set_tiles()
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{
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int resolution = state.resolution;
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int image_w = max(1, params.width/resolution);
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int image_h = max(1, params.height/resolution);
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state.tiles.clear();
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int num = min(image_h, num_devices);
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for(int device = 0; device < num; device++) {
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int device_y = (image_h/num)*device;
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int device_h = (device == num-1)? image_h - device*(image_h/num): image_h/num;
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int tile_w = (tile_size.x >= image_w)? 1: (image_w + tile_size.x - 1)/tile_size.x;
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int tile_h = (tile_size.y >= device_h)? 1: (device_h + tile_size.y - 1)/tile_size.y;
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int sub_w = (image_w + tile_w - 1)/tile_w;
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int sub_h = (device_h + tile_h - 1)/tile_h;
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for(int tile_y = 0; tile_y < tile_h; tile_y++) {
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for(int tile_x = 0; tile_x < tile_w; tile_x++) {
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int x = tile_x * sub_w;
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int y = tile_y * sub_h;
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int w = (tile_x == tile_w-1)? image_w - x: sub_w;
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int h = (tile_y == tile_h-1)? device_h - y: sub_h;
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state.tiles.push_back(Tile(x, y + device_y, w, h, device));
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}
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}
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}
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state.num_tiles = state.tiles.size();
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state.buffer.width = image_w;
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state.buffer.height = image_h;
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state.buffer.full_x = params.full_x/resolution;
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state.buffer.full_y = params.full_y/resolution;
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state.buffer.full_width = max(1, params.full_width/resolution);
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state.buffer.full_height = max(1, params.full_height/resolution);
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}
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bool TileManager::next_tile(Tile& tile, int device)
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{
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list<Tile>::iterator iter;
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for(iter = state.tiles.begin(); iter != state.tiles.end(); iter++) {
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if(iter->device == device) {
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tile = *iter;
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state.tiles.erase(iter);
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return true;
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}
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}
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return false;
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}
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bool TileManager::done()
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{
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return (state.sample+state.num_samples >= num_samples && state.resolution == 1);
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}
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bool TileManager::next()
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{
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if(done())
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return false;
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if(progressive && state.resolution > 1) {
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state.sample = 0;
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state.resolution /= 2;
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state.num_samples = 1;
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set_tiles();
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}
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else {
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state.sample++;
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if(progressive)
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state.num_samples = 1;
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else
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state.num_samples = num_samples;
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state.resolution = 1;
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set_tiles();
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}
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return true;
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}
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CCL_NAMESPACE_END
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