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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 __DEVICE_H__
#define __DEVICE_H__
#include <stdlib.h>
#include "device_memory.h"
#include "util_string.h"
#include "util_thread.h"
#include "util_types.h"
#include "util_vector.h"
CCL_NAMESPACE_BEGIN
class Progress;
enum DeviceType {
DEVICE_NONE,
DEVICE_CPU,
DEVICE_OPENCL,
DEVICE_CUDA,
DEVICE_NETWORK,
DEVICE_MULTI
};
enum MemoryType {
MEM_READ_ONLY,
MEM_WRITE_ONLY,
MEM_READ_WRITE
};
/* Device Task */
class DeviceTask {
public:
typedef enum { PATH_TRACE, TONEMAP, DISPLACE } Type;
Type type;
int x, y, w, h;
device_ptr rng_state;
device_ptr rgba;
device_ptr buffer;
int pass;
int resolution;
device_ptr displace_input;
device_ptr displace_offset;
int displace_x, displace_w;
DeviceTask(Type type = PATH_TRACE);
void split(ThreadQueue<DeviceTask>& tasks, int num);
};
/* Device */
class Device {
protected:
Device() {}
DeviceType type;
bool background;
public:
virtual ~Device() {}
/* info */
virtual string description() = 0;
/* regular memory */
virtual void mem_alloc(device_memory& mem, MemoryType type) = 0;
virtual void mem_copy_to(device_memory& mem) = 0;
virtual void mem_copy_from(device_memory& mem,
size_t offset, size_t size) = 0;
virtual void mem_zero(device_memory& mem) = 0;
virtual void mem_free(device_memory& mem) = 0;
/* constant memory */
virtual void const_copy_to(const char *name, void *host, size_t size) = 0;
/* texture memory */
virtual void tex_alloc(const char *name, device_memory& mem,
bool interpolation = false, bool periodic = false) {};
virtual void tex_free(device_memory& mem) {};
/* pixel memory */
virtual void pixels_alloc(device_memory& mem);
virtual void pixels_copy_from(device_memory& mem, int y, int w, int h);
virtual void pixels_free(device_memory& mem);
/* open shading language, only for CPU device */
virtual void *osl_memory() { return NULL; }
/* tasks */
virtual void task_add(DeviceTask& task) = 0;
virtual void task_wait() = 0;
virtual void task_cancel() = 0;
/* opengl drawing */
virtual void draw_pixels(device_memory& mem, int y, int w, int h,
int width, int height);
#ifdef WITH_NETWORK
/* networking */
void server_run();
#endif
/* static */
static Device *create(DeviceType type, bool background = true, int threads = 0);
static DeviceType type_from_string(const char *name);
static string string_from_type(DeviceType type);
static vector<DeviceType> available_types();
};
CCL_NAMESPACE_END
#endif /* __DEVICE_H__ */
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