diff options
Diffstat (limited to '')
-rw-r--r-- | src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp | 155 |
1 files changed, 151 insertions, 4 deletions
diff --git a/src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp b/src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp index 97fd41cc1..dfd8c8e5a 100644 --- a/src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp +++ b/src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp @@ -8,6 +8,7 @@ #include <fmt/format.h> +#include "common/alignment.h" #include "common/assert.h" #include "common/bit_util.h" #include "common/common_types.h" @@ -17,18 +18,119 @@ #include "video_core/vulkan_common/vulkan_wrapper.h" namespace Vulkan { +namespace { +// Maximum potential alignment of a Vulkan buffer +constexpr VkDeviceSize MAX_ALIGNMENT = 256; +// Maximum size to put elements in the stream buffer +constexpr VkDeviceSize MAX_STREAM_BUFFER_REQUEST_SIZE = 8 * 1024 * 1024; +// Stream buffer size in bytes +constexpr VkDeviceSize STREAM_BUFFER_SIZE = 128 * 1024 * 1024; +constexpr VkDeviceSize REGION_SIZE = STREAM_BUFFER_SIZE / StagingBufferPool::NUM_SYNCS; + +constexpr VkMemoryPropertyFlags HOST_FLAGS = + VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT; +constexpr VkMemoryPropertyFlags STREAM_FLAGS = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT | HOST_FLAGS; + +bool IsStreamHeap(VkMemoryHeap heap) noexcept { + return STREAM_BUFFER_SIZE < (heap.size * 2) / 3; +} + +std::optional<u32> FindMemoryTypeIndex(const VkPhysicalDeviceMemoryProperties& props, u32 type_mask, + VkMemoryPropertyFlags flags) noexcept { + for (u32 type_index = 0; type_index < props.memoryTypeCount; ++type_index) { + if (((type_mask >> type_index) & 1) == 0) { + // Memory type is incompatible + continue; + } + const VkMemoryType& memory_type = props.memoryTypes[type_index]; + if ((memory_type.propertyFlags & flags) != flags) { + // Memory type doesn't have the flags we want + continue; + } + if (!IsStreamHeap(props.memoryHeaps[memory_type.heapIndex])) { + // Memory heap is not suitable for streaming + continue; + } + // Success! + return type_index; + } + return std::nullopt; +} + +u32 FindMemoryTypeIndex(const VkPhysicalDeviceMemoryProperties& props, u32 type_mask) { + // Try to find a DEVICE_LOCAL_BIT type, Nvidia and AMD have a dedicated heap for this + std::optional<u32> type = FindMemoryTypeIndex(props, type_mask, STREAM_FLAGS); + if (type) { + return *type; + } + // Otherwise try without the DEVICE_LOCAL_BIT + type = FindMemoryTypeIndex(props, type_mask, HOST_FLAGS); + if (type) { + return *type; + } + // This should never happen, and in case it does, signal it as an out of memory situation + throw vk::Exception(VK_ERROR_OUT_OF_DEVICE_MEMORY); +} + +size_t Region(size_t iterator) noexcept { + return iterator / REGION_SIZE; +} +} // Anonymous namespace StagingBufferPool::StagingBufferPool(const Device& device_, MemoryAllocator& memory_allocator_, VKScheduler& scheduler_) - : device{device_}, memory_allocator{memory_allocator_}, scheduler{scheduler_} {} + : device{device_}, memory_allocator{memory_allocator_}, scheduler{scheduler_} { + const vk::Device& dev = device.GetLogical(); + stream_buffer = dev.CreateBuffer(VkBufferCreateInfo{ + .sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO, + .pNext = nullptr, + .flags = 0, + .size = STREAM_BUFFER_SIZE, + .usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | + VK_BUFFER_USAGE_INDEX_BUFFER_BIT, + .sharingMode = VK_SHARING_MODE_EXCLUSIVE, + .queueFamilyIndexCount = 0, + .pQueueFamilyIndices = nullptr, + }); + if (device.HasDebuggingToolAttached()) { + stream_buffer.SetObjectNameEXT("Stream Buffer"); + } + VkMemoryDedicatedRequirements dedicated_reqs{ + .sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_REQUIREMENTS, + .pNext = nullptr, + .prefersDedicatedAllocation = VK_FALSE, + .requiresDedicatedAllocation = VK_FALSE, + }; + const auto requirements = dev.GetBufferMemoryRequirements(*stream_buffer, &dedicated_reqs); + const bool make_dedicated = dedicated_reqs.prefersDedicatedAllocation == VK_TRUE || + dedicated_reqs.requiresDedicatedAllocation == VK_TRUE; + const VkMemoryDedicatedAllocateInfo dedicated_info{ + .sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_ALLOCATE_INFO, + .pNext = nullptr, + .image = nullptr, + .buffer = *stream_buffer, + }; + const auto memory_properties = device.GetPhysical().GetMemoryProperties(); + stream_memory = dev.AllocateMemory(VkMemoryAllocateInfo{ + .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, + .pNext = make_dedicated ? &dedicated_info : nullptr, + .allocationSize = requirements.size, + .memoryTypeIndex = FindMemoryTypeIndex(memory_properties, requirements.memoryTypeBits), + }); + if (device.HasDebuggingToolAttached()) { + stream_memory.SetObjectNameEXT("Stream Buffer Memory"); + } + stream_buffer.BindMemory(*stream_memory, 0); + stream_pointer = stream_memory.Map(0, STREAM_BUFFER_SIZE); +} StagingBufferPool::~StagingBufferPool() = default; StagingBufferRef StagingBufferPool::Request(size_t size, MemoryUsage usage) { - if (const std::optional<StagingBufferRef> ref = TryGetReservedBuffer(size, usage)) { - return *ref; + if (usage == MemoryUsage::Upload && size <= MAX_STREAM_BUFFER_REQUEST_SIZE) { + return GetStreamBuffer(size); } - return CreateStagingBuffer(size, usage); + return GetStagingBuffer(size, usage); } void StagingBufferPool::TickFrame() { @@ -39,6 +141,51 @@ void StagingBufferPool::TickFrame() { ReleaseCache(MemoryUsage::Download); } +StagingBufferRef StagingBufferPool::GetStreamBuffer(size_t size) { + if (AreRegionsActive(Region(free_iterator) + 1, + std::min(Region(iterator + size) + 1, NUM_SYNCS))) { + // Avoid waiting for the previous usages to be free + return GetStagingBuffer(size, MemoryUsage::Upload); + } + const u64 current_tick = scheduler.CurrentTick(); + std::fill(sync_ticks.begin() + Region(used_iterator), sync_ticks.begin() + Region(iterator), + current_tick); + used_iterator = iterator; + free_iterator = std::max(free_iterator, iterator + size); + + if (iterator + size > STREAM_BUFFER_SIZE) { + std::fill(sync_ticks.begin() + Region(used_iterator), sync_ticks.begin() + NUM_SYNCS, + current_tick); + used_iterator = 0; + iterator = 0; + free_iterator = size; + + if (AreRegionsActive(0, Region(size) + 1)) { + // Avoid waiting for the previous usages to be free + return GetStagingBuffer(size, MemoryUsage::Upload); + } + } + const size_t offset = iterator; + iterator = Common::AlignUp(iterator + size, MAX_ALIGNMENT); + return StagingBufferRef{ + .buffer = *stream_buffer, + .offset = static_cast<VkDeviceSize>(offset), + .mapped_span = std::span<u8>(stream_pointer + offset, size), + }; +} + +bool StagingBufferPool::AreRegionsActive(size_t region_begin, size_t region_end) const { + return std::any_of(sync_ticks.begin() + region_begin, sync_ticks.begin() + region_end, + [this](u64 sync_tick) { return !scheduler.IsFree(sync_tick); }); +}; + +StagingBufferRef StagingBufferPool::GetStagingBuffer(size_t size, MemoryUsage usage) { + if (const std::optional<StagingBufferRef> ref = TryGetReservedBuffer(size, usage)) { + return *ref; + } + return CreateStagingBuffer(size, usage); +} + std::optional<StagingBufferRef> StagingBufferPool::TryGetReservedBuffer(size_t size, MemoryUsage usage) { StagingBuffers& cache_level = GetCache(usage)[Common::Log2Ceil64(size)]; |