blender/intern/cycles/device/device_memory.cpp
2019-08-26 17:42:52 +02:00

163 lines
3.7 KiB
C++

/*
* Copyright 2011-2017 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.
*/
#include "device/device.h"
#include "device/device_memory.h"
CCL_NAMESPACE_BEGIN
/* Device Memory */
device_memory::device_memory(Device *device, const char *name, MemoryType type)
: data_type(device_type_traits<uchar>::data_type),
data_elements(device_type_traits<uchar>::num_elements),
data_size(0),
device_size(0),
data_width(0),
data_height(0),
data_depth(0),
type(type),
name(name),
interpolation(INTERPOLATION_NONE),
extension(EXTENSION_REPEAT),
device(device),
device_pointer(0),
host_pointer(0),
shared_pointer(0)
{
}
device_memory::~device_memory()
{
}
device_memory::device_memory(device_memory &&other)
: data_type(other.data_type),
data_elements(other.data_elements),
data_size(other.data_size),
device_size(other.device_size),
data_width(other.data_width),
data_height(other.data_height),
data_depth(other.data_depth),
type(other.type),
name(other.name),
interpolation(other.interpolation),
extension(other.extension),
device(other.device),
device_pointer(other.device_pointer),
host_pointer(other.host_pointer),
shared_pointer(other.shared_pointer)
{
other.device_size = 0;
other.device_pointer = 0;
other.host_pointer = 0;
other.shared_pointer = 0;
}
void *device_memory::host_alloc(size_t size)
{
if (!size) {
return 0;
}
void *ptr = util_aligned_malloc(size, MIN_ALIGNMENT_CPU_DATA_TYPES);
if (ptr) {
util_guarded_mem_alloc(size);
}
else {
throw std::bad_alloc();
}
return ptr;
}
void device_memory::host_free()
{
if (host_pointer) {
util_guarded_mem_free(memory_size());
util_aligned_free((void *)host_pointer);
host_pointer = 0;
}
}
void device_memory::device_alloc()
{
assert(!device_pointer && type != MEM_TEXTURE);
device->mem_alloc(*this);
}
void device_memory::device_free()
{
if (device_pointer) {
device->mem_free(*this);
}
}
void device_memory::device_copy_to()
{
if (host_pointer) {
device->mem_copy_to(*this);
}
}
void device_memory::device_copy_from(int y, int w, int h, int elem)
{
assert(type != MEM_TEXTURE && type != MEM_READ_ONLY);
device->mem_copy_from(*this, y, w, h, elem);
}
void device_memory::device_zero()
{
if (data_size) {
device->mem_zero(*this);
}
}
void device_memory::swap_device(Device *new_device,
size_t new_device_size,
device_ptr new_device_ptr)
{
original_device = device;
original_device_size = device_size;
original_device_ptr = device_pointer;
device = new_device;
device_size = new_device_size;
device_pointer = new_device_ptr;
}
void device_memory::restore_device()
{
device = original_device;
device_size = original_device_size;
device_pointer = original_device_ptr;
}
/* Device Sub Ptr */
device_sub_ptr::device_sub_ptr(device_memory &mem, int offset, int size) : device(mem.device)
{
ptr = device->mem_alloc_sub_ptr(mem, offset, size);
}
device_sub_ptr::~device_sub_ptr()
{
device->mem_free_sub_ptr(ptr);
}
CCL_NAMESPACE_END