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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 __DEVICE_H__
#define __DEVICE_H__
#include <stdlib.h>
#include "device_memory.h"
#include "device_task.h"
#include "util_list.h"
#include "util_stats.h"
#include "util_string.h"
#include "util_thread.h"
#include "util_types.h"
#include "util_vector.h"
CCL_NAMESPACE_BEGIN
class Progress;
class RenderTile;
/* Device Types */
enum DeviceType {
DEVICE_NONE,
DEVICE_CPU,
DEVICE_OPENCL,
DEVICE_CUDA,
DEVICE_NETWORK,
DEVICE_MULTI
};
class DeviceInfo {
public:
DeviceType type;
string description;
string id;
int num;
bool display_device;
bool advanced_shading;
bool pack_images;
bool extended_images; /* flag for GPU and Multi device */
bool use_split_kernel; /* Denotes if the device is going to run cycles using split-kernel */
vector<DeviceInfo> multi_devices;
DeviceInfo()
{
type = DEVICE_CPU;
id = "CPU";
num = 0;
display_device = false;
advanced_shading = true;
pack_images = false;
extended_images = false;
use_split_kernel = false;
}
};
class DeviceRequestedFeatures {
public:
/* Use experimental feature set. */
bool experimental;
/* Maximum number of closures in shader trees. */
int max_closure;
/* Selective nodes compilation. */
/* Identifier of a node group up to which all the nodes needs to be
* compiled in. Nodes from higher group indices will be ignores.
*/
int max_nodes_group;
/* Features bitfield indicating which features from the requested group
* will be compiled in. Nodes which corresponds to features which are not
* in this bitfield will be ignored even if they're in the requested group.
*/
int nodes_features;
/* BVH/sampling kernel features. */
bool use_hair;
bool use_object_motion;
bool use_camera_motion;
DeviceRequestedFeatures()
{
/* TODO(sergey): Find more meaningful defaults. */
experimental = false;
max_closure = 0;
max_nodes_group = 0;
nodes_features = 0;
use_hair = false;
use_object_motion = false;
use_camera_motion = false;
}
bool modified(const DeviceRequestedFeatures& requested_features)
{
return !(experimental == requested_features.experimental &&
max_closure == requested_features.max_closure &&
max_nodes_group == requested_features.max_nodes_group &&
nodes_features == requested_features.nodes_features);
}
};
/* Device */
struct DeviceDrawParams {
function<void(void)> bind_display_space_shader_cb;
function<void(void)> unbind_display_space_shader_cb;
};
class Device {
protected:
Device(DeviceInfo& info_, Stats &stats_, bool background) : background(background), vertex_buffer(0), info(info_), stats(stats_) {}
bool background;
string error_msg;
/* used for real time display */
unsigned int vertex_buffer;
public:
virtual ~Device();
/* info */
DeviceInfo info;
virtual const string& error_message() { return error_msg; }
bool have_error() { return !error_message().empty(); }
/* statistics */
Stats &stats;
/* 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,
int y, int w, int h, int elem) = 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*/,
InterpolationType interpolation = INTERPOLATION_NONE,
bool periodic = false)
{
(void)interpolation; /* Ignored. */
(void)periodic; /* Ignored. */
};
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; }
/* load/compile kernels, must be called before adding tasks */
virtual bool load_kernels(
const DeviceRequestedFeatures& /*requested_features*/)
{ return true; }
/* tasks */
virtual int get_split_task_count(DeviceTask& task) = 0;
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 dx, int dy, int width, int height, bool transparent,
const DeviceDrawParams &draw_params);
#ifdef WITH_NETWORK
/* networking */
void server_run();
#endif
/* multi device */
virtual void map_tile(Device * /*sub_device*/, RenderTile& /*tile*/) {}
virtual int device_number(Device * /*sub_device*/) { return 0; }
/* static */
static Device *create(DeviceInfo& info, Stats &stats, bool background = true);
static DeviceType type_from_string(const char *name);
static string string_from_type(DeviceType type);
static vector<DeviceType>& available_types();
static vector<DeviceInfo>& available_devices();
static string device_capabilities();
};
CCL_NAMESPACE_END
#endif /* __DEVICE_H__ */
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