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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
#ifndef __SESSION_H__
#define __SESSION_H__
#include "buffers.h"
#include "device.h"
#include "tile.h"
#include "util_progress.h"
#include "util_stats.h"
#include "util_thread.h"
#include "util_vector.h"
CCL_NAMESPACE_BEGIN
class BufferParams;
class Device;
class DeviceScene;
class DisplayBuffer;
class Progress;
class RenderBuffers;
class Scene;
/* Session Parameters */
class SessionParams {
public:
DeviceInfo device;
bool background;
bool progressive_refine;
string output_path;
bool progressive;
bool experimental;
int samples;
int2 tile_size;
TileOrder tile_order;
int start_resolution;
int threads;
bool display_buffer_linear;
double cancel_timeout;
double reset_timeout;
double text_timeout;
enum { OSL, SVM } shadingsystem;
SessionParams()
{
background = false;
progressive_refine = false;
output_path = "";
progressive = false;
experimental = false;
samples = USHRT_MAX;
tile_size = make_int2(64, 64);
start_resolution = INT_MAX;
threads = 0;
display_buffer_linear = false;
cancel_timeout = 0.1;
reset_timeout = 0.1;
text_timeout = 1.0;
shadingsystem = SVM;
tile_order = TILE_CENTER;
}
bool modified(const SessionParams& params)
{ return !(device.type == params.device.type
&& device.id == params.device.id
&& background == params.background
&& progressive_refine == params.progressive_refine
&& output_path == params.output_path
/* && samples == params.samples */
&& progressive == params.progressive
&& experimental == params.experimental
&& tile_size == params.tile_size
&& start_resolution == params.start_resolution
&& threads == params.threads
&& display_buffer_linear == params.display_buffer_linear
&& cancel_timeout == params.cancel_timeout
&& reset_timeout == params.reset_timeout
&& text_timeout == params.text_timeout
&& tile_order == params.tile_order
&& shadingsystem == params.shadingsystem); }
};
/* Session
*
* This is the class that contains the session thread, running the render
* control loop and dispatching tasks. */
class Session {
public:
Device *device;
Scene *scene;
RenderBuffers *buffers;
DisplayBuffer *display;
Progress progress;
SessionParams params;
TileManager tile_manager;
Stats stats;
boost::function<void(RenderTile&)> write_render_tile_cb;
boost::function<void(RenderTile&)> update_render_tile_cb;
Session(const SessionParams& params);
~Session();
void start();
bool draw(BufferParams& params);
void wait();
bool ready_to_reset();
void reset(BufferParams& params, int samples);
void set_samples(int samples);
void set_pause(bool pause);
void device_free();
protected:
struct DelayedReset {
thread_mutex mutex;
bool do_reset;
BufferParams params;
int samples;
} delayed_reset;
void run();
void update_scene();
void update_status_time(bool show_pause = false, bool show_done = false);
void tonemap();
void path_trace();
void reset_(BufferParams& params, int samples);
void run_cpu();
bool draw_cpu(BufferParams& params);
void reset_cpu(BufferParams& params, int samples);
void run_gpu();
bool draw_gpu(BufferParams& params);
void reset_gpu(BufferParams& params, int samples);
bool acquire_tile(Device *tile_device, RenderTile& tile);
void update_tile_sample(RenderTile& tile);
void release_tile(RenderTile& tile);
void update_progress_sample();
bool device_use_gl;
thread *session_thread;
volatile bool display_outdated;
volatile bool gpu_draw_ready;
volatile bool gpu_need_tonemap;
thread_condition_variable gpu_need_tonemap_cond;
bool pause;
thread_condition_variable pause_cond;
thread_mutex pause_mutex;
thread_mutex tile_mutex;
thread_mutex buffers_mutex;
thread_mutex display_mutex;
bool kernels_loaded;
double start_time;
double reset_time;
double preview_time;
double paused_time;
/* progressive refine */
double last_update_time;
bool update_progressive_refine(bool cancel);
vector<RenderBuffers *> tile_buffers;
};
CCL_NAMESPACE_END
#endif /* __SESSION_H__ */
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