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vulkan_memory_allocator: Allow textures to be allocated in host memory

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Allow Vulkan's allocator to use host memory when there's no more device
local memory. This delays OOM, but it will eventually still happen.
This commit is contained in:
ReinUsesLisp 2021-05-27 05:47:07 -03:00
parent 116989be8e
commit 19454e71d8
2 changed files with 43 additions and 31 deletions
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67
src/video_core/vulkan_common/vulkan_memory_allocator.cpp
View file

@ -53,6 +53,18 @@ struct Range {
UNREACHABLE_MSG("Invalid memory usage={}", usage);
return VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
}
constexpr VkExportMemoryAllocateInfo EXPORT_ALLOCATE_INFO{
.sType = VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO,
.pNext = nullptr,
#ifdef _WIN32
.handleTypes = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT,
#elif __unix__
.handleTypes = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT,
#else
.handleTypes = 0,
#endif
};
} // Anonymous namespace
class MemoryAllocation {
@ -131,7 +143,7 @@ public:
/// Returns whether this allocation is compatible with the arguments.
[[nodiscard]] bool IsCompatible(VkMemoryPropertyFlags flags, u32 type_mask) const {
return (flags & property_flags) && (type_mask & shifted_memory_type) != 0;
return (flags & property_flags) == property_flags && (type_mask & shifted_memory_type) != 0;
}
private:
@ -217,14 +229,18 @@ MemoryAllocator::~MemoryAllocator() = default;
MemoryCommit MemoryAllocator::Commit(const VkMemoryRequirements& requirements, MemoryUsage usage) {
// Find the fastest memory flags we can afford with the current requirements
const VkMemoryPropertyFlags flags = MemoryPropertyFlags(requirements.memoryTypeBits, usage);
const u32 type_mask = requirements.memoryTypeBits;
const VkMemoryPropertyFlags usage_flags = MemoryUsagePropertyFlags(usage);
const VkMemoryPropertyFlags flags = MemoryPropertyFlags(type_mask, usage_flags);
if (std::optional<MemoryCommit> commit = TryCommit(requirements, flags)) {
return std::move(*commit);
}
// Commit has failed, allocate more memory.
// TODO(Rodrigo): Handle out of memory situations in some way like flushing to guest memory.
AllocMemory(flags, requirements.memoryTypeBits, AllocationChunkSize(requirements.size));
const u64 chunk_size = AllocationChunkSize(requirements.size);
if (!TryAllocMemory(flags, type_mask, chunk_size)) {
// TODO(Rodrigo): Handle out of memory situations in some way like flushing to guest memory.
throw vk::Exception(VK_ERROR_OUT_OF_DEVICE_MEMORY);
}
// Commit again, this time it won't fail since there's a fresh allocation above.
// If it does, there's a bug.
return TryCommit(requirements, flags).value();
@ -242,26 +258,25 @@ MemoryCommit MemoryAllocator::Commit(const vk::Image& image, MemoryUsage usage)
return commit;
}
void MemoryAllocator::AllocMemory(VkMemoryPropertyFlags flags, u32 type_mask, u64 size) {
bool MemoryAllocator::TryAllocMemory(VkMemoryPropertyFlags flags, u32 type_mask, u64 size) {
const u32 type = FindType(flags, type_mask).value();
const VkExportMemoryAllocateInfo export_allocate_info{
.sType = VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO,
.pNext = nullptr,
#ifdef _WIN32
.handleTypes = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT,
#elif __unix__
.handleTypes = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT,
#else
.handleTypes = 0,
#endif
};
vk::DeviceMemory memory = device.GetLogical().AllocateMemory({
vk::DeviceMemory memory = device.GetLogical().TryAllocateMemory({
.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
.pNext = export_allocations ? &export_allocate_info : nullptr,
.pNext = export_allocations ? &EXPORT_ALLOCATE_INFO : nullptr,
.allocationSize = size,
.memoryTypeIndex = type,
});
if (!memory) {
if ((flags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) != 0) {
// Try to allocate non device local memory
return TryAllocMemory(flags & ~VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, type_mask, size);
} else {
// RIP
return false;
}
}
allocations.push_back(std::make_unique<MemoryAllocation>(std::move(memory), flags, size, type));
return true;
}
std::optional<MemoryCommit> MemoryAllocator::TryCommit(const VkMemoryRequirements& requirements,
@ -274,24 +289,24 @@ std::optional<MemoryCommit> MemoryAllocator::TryCommit(const VkMemoryRequirement
return commit;
}
}
if ((flags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) != 0) {
// Look for non device local commits on failure
return TryCommit(requirements, flags & ~VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
}
return std::nullopt;
}
VkMemoryPropertyFlags MemoryAllocator::MemoryPropertyFlags(u32 type_mask, MemoryUsage usage) const {
return MemoryPropertyFlags(type_mask, MemoryUsagePropertyFlags(usage));
}
VkMemoryPropertyFlags MemoryAllocator::MemoryPropertyFlags(u32 type_mask,
VkMemoryPropertyFlags flags) const {
if (FindType(flags, type_mask)) {
// Found a memory type with those requirements
return flags;
}
if (flags & VK_MEMORY_PROPERTY_HOST_CACHED_BIT) {
if ((flags & VK_MEMORY_PROPERTY_HOST_CACHED_BIT) != 0) {
// Remove host cached bit in case it's not supported
return MemoryPropertyFlags(type_mask, flags & ~VK_MEMORY_PROPERTY_HOST_CACHED_BIT);
}
if (flags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) {
if ((flags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) != 0) {
// Remove device local, if it's not supported by the requested resource
return MemoryPropertyFlags(type_mask, flags & ~VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
}
@ -302,7 +317,7 @@ VkMemoryPropertyFlags MemoryAllocator::MemoryPropertyFlags(u32 type_mask,
std::optional<u32> MemoryAllocator::FindType(VkMemoryPropertyFlags flags, u32 type_mask) const {
for (u32 type_index = 0; type_index < properties.memoryTypeCount; ++type_index) {
const VkMemoryPropertyFlags type_flags = properties.memoryTypes[type_index].propertyFlags;
if ((type_mask & (1U << type_index)) && (type_flags & flags)) {
if ((type_mask & (1U << type_index)) != 0 && (type_flags & flags) == flags) {
// The type matches in type and in the wanted properties.
return type_index;
}

7
src/video_core/vulkan_common/vulkan_memory_allocator.h
View file

@ -101,16 +101,13 @@ public:
MemoryCommit Commit(const vk::Image& image, MemoryUsage usage);
private:
/// Allocates a chunk of memory.
void AllocMemory(VkMemoryPropertyFlags flags, u32 type_mask, u64 size);
/// Tries to allocate a chunk of memory.
bool TryAllocMemory(VkMemoryPropertyFlags flags, u32 type_mask, u64 size);
/// Tries to allocate a memory commit.
std::optional<MemoryCommit> TryCommit(const VkMemoryRequirements& requirements,
VkMemoryPropertyFlags flags);
/// Returns the fastest compatible memory property flags from a wanted usage.
VkMemoryPropertyFlags MemoryPropertyFlags(u32 type_mask, MemoryUsage usage) const;
/// Returns the fastest compatible memory property flags from the wanted flags.
VkMemoryPropertyFlags MemoryPropertyFlags(u32 type_mask, VkMemoryPropertyFlags flags) const;