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vk_stream_buf: Allow dedicated allocations (#7103)

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* vk_stream_buf: Avoid protected memory heaps

* Add an "Exclude" argument when finding a memory-type that avoids
  `VK_MEMORY_PROPERTY_PROTECTED_BIT` by default

* vk_stream_buf: Utilize dedicated allocations when preferred by driver

`VK_KHR_dedicated_allocation` is part of the core Vulkan 1.1
specification and should be utilized when `prefersDedicatedAllocation`
is set.
This commit is contained in:
Wunk 2023-11-05 12:25:59 -08:00 • committed by GitHub
parent 998b9a9525
commit 1cf64ffaef
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1 changed files with 33 additions and 11 deletions
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44
src/video_core/renderer_vulkan/vk_stream_buffer.cpp
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@ -44,11 +44,12 @@ vk::MemoryPropertyFlags MakePropertyFlags(BufferType type) {
}
/// Find a memory type with the passed requirements
std::optional<u32> FindMemoryType(const vk::PhysicalDeviceMemoryProperties& properties,
vk::MemoryPropertyFlags wanted) {
std::optional<u32> FindMemoryType(
const vk::PhysicalDeviceMemoryProperties& properties, vk::MemoryPropertyFlags wanted,
vk::MemoryPropertyFlags excluded = vk::MemoryPropertyFlagBits::eProtected) {
for (u32 i = 0; i < properties.memoryTypeCount; ++i) {
const auto flags = properties.memoryTypes[i].propertyFlags;
if ((flags & wanted) == wanted) {
if (((flags & wanted) == wanted) && (!(flags & excluded))) {
return i;
}
}
@ -166,25 +167,46 @@ void StreamBuffer::CreateBuffers(u64 prefered_size) {
static_cast<bool>(mem_type.propertyFlags & vk::MemoryPropertyFlagBits::eHostCoherent);
// Substract from the preferred heap size some bytes to avoid getting out of memory.
const VkDeviceSize heap_size = memory_properties.memoryHeaps[preferred_heap].size;
const vk::DeviceSize heap_size = memory_properties.memoryHeaps[preferred_heap].size;
// As per DXVK's example, using `heap_size / 2`
const VkDeviceSize allocable_size = heap_size / 2;
const vk::DeviceSize allocable_size = heap_size / 2;
buffer = device.createBuffer({
.size = std::min(prefered_size, allocable_size),
.usage = usage,
});
const auto requirements = device.getBufferMemoryRequirements(buffer);
stream_buffer_size = static_cast<u64>(requirements.size);
const auto requirements_chain =
device
.getBufferMemoryRequirements2<vk::MemoryRequirements2, vk::MemoryDedicatedRequirements>(
{.buffer = buffer});
const auto& requirements = requirements_chain.get<vk::MemoryRequirements2>();
const auto& dedicated_requirements = requirements_chain.get<vk::MemoryDedicatedRequirements>();
stream_buffer_size = static_cast<u64>(requirements.memoryRequirements.size);
LOG_INFO(Render_Vulkan, "Creating {} buffer with size {} KB with flags {}",
BufferTypeName(type), stream_buffer_size / 1024,
vk::to_string(mem_type.propertyFlags));
memory = device.allocateMemory({
.allocationSize = requirements.size,
.memoryTypeIndex = preferred_type,
});
if (dedicated_requirements.prefersDedicatedAllocation) {
vk::StructureChain<vk::MemoryAllocateInfo, vk::MemoryDedicatedAllocateInfo> alloc_chain =
{};
auto& alloc_info = alloc_chain.get<vk::MemoryAllocateInfo>();
alloc_info.allocationSize = requirements.memoryRequirements.size;
alloc_info.memoryTypeIndex = preferred_type;
auto& dedicated_alloc_info = alloc_chain.get<vk::MemoryDedicatedAllocateInfo>();
dedicated_alloc_info.buffer = buffer;
memory = device.allocateMemory(alloc_chain.get());
} else {
memory = device.allocateMemory({
.allocationSize = requirements.memoryRequirements.size,
.memoryTypeIndex = preferred_type,
});
}
device.bindBufferMemory(buffer, memory, 0);
mapped = reinterpret_cast<u8*>(device.mapMemory(memory, 0, VK_WHOLE_SIZE));