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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrVkMemory.h"
#include "GrVkGpu.h"
#include "GrVkUtil.h"
#include "vk/GrVkMemoryAllocator.h"
using AllocationPropertyFlags = GrVkMemoryAllocator::AllocationPropertyFlags;
using BufferUsage = GrVkMemoryAllocator::BufferUsage;
static BufferUsage get_buffer_usage(GrVkBuffer::Type type, bool dynamic) {
switch (type) {
case GrVkBuffer::kVertex_Type: // fall through
case GrVkBuffer::kIndex_Type: // fall through
case GrVkBuffer::kTexel_Type:
return dynamic ? BufferUsage::kCpuWritesGpuReads : BufferUsage::kGpuOnly;
case GrVkBuffer::kUniform_Type:
SkASSERT(dynamic);
return BufferUsage::kCpuWritesGpuReads;
case GrVkBuffer::kCopyRead_Type: // fall through
case GrVkBuffer::kCopyWrite_Type:
return BufferUsage::kCpuOnly;
}
SK_ABORT("Invalid GrVkBuffer::Type");
return BufferUsage::kCpuOnly; // Just returning an arbitrary value.
}
bool GrVkMemory::AllocAndBindBufferMemory(const GrVkGpu* gpu,
VkBuffer buffer,
GrVkBuffer::Type type,
bool dynamic,
GrVkAlloc* alloc) {
GrVkMemoryAllocator* allocator = gpu->memoryAllocator();
GrVkBackendMemory memory = 0;
GrVkMemoryAllocator::BufferUsage usage = get_buffer_usage(type, dynamic);
AllocationPropertyFlags propFlags;
if (usage == GrVkMemoryAllocator::BufferUsage::kCpuWritesGpuReads) {
// In general it is always fine (and often better) to keep buffers always mapped.
// TODO: According to AMDs guide for the VulkanMemoryAllocator they suggest there are two
// cases when keeping it mapped can hurt. The first is when running on Win7 or Win8 (Win 10
// is fine). In general, by the time Vulkan ships it is probably less likely to be running
// on non Win10 or newer machines. The second use case is if running on an AMD card and you
// are using the special GPU local and host mappable memory. However, in general we don't
// pick this memory as we've found it slower than using the cached host visible memory. In
// the future if we find the need to special case either of these two issues we can add
// checks for them here.
propFlags = AllocationPropertyFlags::kPersistentlyMapped;
} else {
propFlags = AllocationPropertyFlags::kNone;
}
if (!allocator->allocateMemoryForBuffer(buffer, usage, propFlags, &memory)) {
return false;
}
allocator->getAllocInfo(memory, alloc);
// Bind buffer
VkResult err = GR_VK_CALL(gpu->vkInterface(), BindBufferMemory(gpu->device(), buffer,
alloc->fMemory,
alloc->fOffset));
if (err) {
FreeBufferMemory(gpu, type, *alloc);
return false;
}
return true;
}
void GrVkMemory::FreeBufferMemory(const GrVkGpu* gpu, GrVkBuffer::Type type,
const GrVkAlloc& alloc) {
if (alloc.fBackendMemory) {
GrVkMemoryAllocator* allocator = gpu->memoryAllocator();
allocator->freeMemory(alloc.fBackendMemory);
} else {
GR_VK_CALL(gpu->vkInterface(), FreeMemory(gpu->device(), alloc.fMemory, nullptr));
}
}
const VkDeviceSize kMaxSmallImageSize = 16 * 1024;
bool GrVkMemory::AllocAndBindImageMemory(const GrVkGpu* gpu,
VkImage image,
bool linearTiling,
GrVkAlloc* alloc) {
SkASSERT(!linearTiling);
GrVkMemoryAllocator* allocator = gpu->memoryAllocator();
GrVkBackendMemory memory = 0;
VkMemoryRequirements memReqs;
GR_VK_CALL(gpu->vkInterface(), GetImageMemoryRequirements(gpu->device(), image, &memReqs));
AllocationPropertyFlags propFlags;
if (memReqs.size > kMaxSmallImageSize || gpu->vkCaps().shouldAlwaysUseDedicatedImageMemory()) {
propFlags = AllocationPropertyFlags::kDedicatedAllocation;
} else {
propFlags = AllocationPropertyFlags::kNone;
}
if (!allocator->allocateMemoryForImage(image, propFlags, &memory)) {
return false;
}
allocator->getAllocInfo(memory, alloc);
// Bind buffer
VkResult err = GR_VK_CALL(gpu->vkInterface(), BindImageMemory(gpu->device(), image,
alloc->fMemory, alloc->fOffset));
if (err) {
FreeImageMemory(gpu, linearTiling, *alloc);
return false;
}
return true;
}
void GrVkMemory::FreeImageMemory(const GrVkGpu* gpu, bool linearTiling,
const GrVkAlloc& alloc) {
if (alloc.fBackendMemory) {
GrVkMemoryAllocator* allocator = gpu->memoryAllocator();
allocator->freeMemory(alloc.fBackendMemory);
} else {
GR_VK_CALL(gpu->vkInterface(), FreeMemory(gpu->device(), alloc.fMemory, nullptr));
}
}
void* GrVkMemory::MapAlloc(const GrVkGpu* gpu, const GrVkAlloc& alloc) {
SkASSERT(GrVkAlloc::kMappable_Flag & alloc.fFlags);
#ifdef SK_DEBUG
if (alloc.fFlags & GrVkAlloc::kNoncoherent_Flag) {
VkDeviceSize alignment = gpu->physicalDeviceProperties().limits.nonCoherentAtomSize;
SkASSERT(0 == (alloc.fOffset & (alignment-1)));
SkASSERT(0 == (alloc.fSize & (alignment-1)));
}
#endif
if (alloc.fBackendMemory) {
GrVkMemoryAllocator* allocator = gpu->memoryAllocator();
return allocator->mapMemory(alloc.fBackendMemory);
}
void* mapPtr;
VkResult err = GR_VK_CALL(gpu->vkInterface(), MapMemory(gpu->device(), alloc.fMemory,
alloc.fOffset,
alloc.fSize, 0, &mapPtr));
if (err) {
mapPtr = nullptr;
}
return mapPtr;
}
void GrVkMemory::UnmapAlloc(const GrVkGpu* gpu, const GrVkAlloc& alloc) {
if (alloc.fBackendMemory) {
GrVkMemoryAllocator* allocator = gpu->memoryAllocator();
allocator->unmapMemory(alloc.fBackendMemory);
} else {
GR_VK_CALL(gpu->vkInterface(), UnmapMemory(gpu->device(), alloc.fMemory));
}
}
void GrVkMemory::GetNonCoherentMappedMemoryRange(const GrVkAlloc& alloc, VkDeviceSize offset,
VkDeviceSize size, VkDeviceSize alignment,
VkMappedMemoryRange* range) {
SkASSERT(alloc.fFlags & GrVkAlloc::kNoncoherent_Flag);
offset = offset + alloc.fOffset;
VkDeviceSize offsetDiff = offset & (alignment -1);
offset = offset - offsetDiff;
size = (size + alignment - 1) & ~(alignment - 1);
#ifdef SK_DEBUG
SkASSERT(offset >= alloc.fOffset);
SkASSERT(offset + size <= alloc.fOffset + alloc.fSize);
SkASSERT(0 == (offset & (alignment-1)));
SkASSERT(size > 0);
SkASSERT(0 == (size & (alignment-1)));
#endif
memset(range, 0, sizeof(VkMappedMemoryRange));
range->sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
range->memory = alloc.fMemory;
range->offset = offset;
range->size = size;
}
void GrVkMemory::FlushMappedAlloc(const GrVkGpu* gpu, const GrVkAlloc& alloc, VkDeviceSize offset,
VkDeviceSize size) {
if (alloc.fFlags & GrVkAlloc::kNoncoherent_Flag) {
SkASSERT(offset == 0);
SkASSERT(size <= alloc.fSize);
if (alloc.fBackendMemory) {
GrVkMemoryAllocator* allocator = gpu->memoryAllocator();
allocator->flushMappedMemory(alloc.fBackendMemory, offset, size);
} else {
VkDeviceSize alignment = gpu->physicalDeviceProperties().limits.nonCoherentAtomSize;
VkMappedMemoryRange mappedMemoryRange;
GrVkMemory::GetNonCoherentMappedMemoryRange(alloc, offset, size, alignment,
&mappedMemoryRange);
GR_VK_CALL(gpu->vkInterface(), FlushMappedMemoryRanges(gpu->device(), 1,
&mappedMemoryRange));
}
}
}
void GrVkMemory::InvalidateMappedAlloc(const GrVkGpu* gpu, const GrVkAlloc& alloc,
VkDeviceSize offset, VkDeviceSize size) {
if (alloc.fFlags & GrVkAlloc::kNoncoherent_Flag) {
SkASSERT(offset == 0);
SkASSERT(size <= alloc.fSize);
if (alloc.fBackendMemory) {
GrVkMemoryAllocator* allocator = gpu->memoryAllocator();
allocator->invalidateMappedMemory(alloc.fBackendMemory, offset, size);
} else {
VkDeviceSize alignment = gpu->physicalDeviceProperties().limits.nonCoherentAtomSize;
VkMappedMemoryRange mappedMemoryRange;
GrVkMemory::GetNonCoherentMappedMemoryRange(alloc, offset, size, alignment,
&mappedMemoryRange);
GR_VK_CALL(gpu->vkInterface(), InvalidateMappedMemoryRanges(gpu->device(), 1,
&mappedMemoryRange));
}
}
}
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