forked from bartvdbraak/blender
Brecht Van Lommel
c621832d3d
In that case it can now fall back to CPU memory, at the cost of reduced performance. For scenes that fit in GPU memory, this commit should not cause any noticeable slowdowns. We don't use all physical system RAM, since that can cause OS instability. We leave at least half of system RAM or 4GB to other software, whichever is smaller. For image textures in host memory, performance was maybe 20-30% slower in our tests (although this is highly hardware and scene dependent). Once other type of data doesn't fit on the GPU, performance can be e.g. 10x slower, and at that point it's probably better to just render on the CPU. Differential Revision: https://developer.blender.org/D2056
123 lines
2.4 KiB
C++
123 lines
2.4 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()
|
|
{
|
|
}
|
|
|
|
void *device_memory::host_alloc(size_t size)
|
|
{
|
|
if(!size) {
|
|
return 0;
|
|
}
|
|
|
|
size_t alignment = device->mem_address_alignment();
|
|
void *ptr = util_aligned_malloc(size, alignment);
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
/* 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
|
|
|