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vk_stream_buffer: Remove unused stream buffer
Remove unused file.
This commit is contained in:
ReinUsesLisp
parent
c0f99558fb
commit
5f9a4817a5
@ -1,168 +0,0 @@
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// Copyright 2019 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <limits>
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#include <optional>
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#include <tuple>
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#include <vector>
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#include "common/alignment.h"
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#include "common/assert.h"
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#include "common/literals.h"
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#include "video_core/renderer_vulkan/vk_scheduler.h"
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#include "video_core/renderer_vulkan/vk_stream_buffer.h"
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#include "video_core/vulkan_common/vulkan_device.h"
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#include "video_core/vulkan_common/vulkan_wrapper.h"
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namespace Vulkan {
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namespace {
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using namespace Common::Literals;
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constexpr VkBufferUsageFlags BUFFER_USAGE =
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VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT |
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VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
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constexpr u64 WATCHES_INITIAL_RESERVE = 0x4000;
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constexpr u64 WATCHES_RESERVE_CHUNK = 0x1000;
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constexpr u64 PREFERRED_STREAM_BUFFER_SIZE = 256_MiB;
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/// Find a memory type with the passed requirements
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std::optional<u32> FindMemoryType(const VkPhysicalDeviceMemoryProperties& properties,
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VkMemoryPropertyFlags wanted,
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u32 filter = std::numeric_limits<u32>::max()) {
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for (u32 i = 0; i < properties.memoryTypeCount; ++i) {
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const auto flags = properties.memoryTypes[i].propertyFlags;
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if ((flags & wanted) == wanted && (filter & (1U << i)) != 0) {
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return i;
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}
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}
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return std::nullopt;
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}
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/// Get the preferred host visible memory type.
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u32 GetMemoryType(const VkPhysicalDeviceMemoryProperties& properties,
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u32 filter = std::numeric_limits<u32>::max()) {
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// Prefer device local host visible allocations. Both AMD and Nvidia now provide one.
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// Otherwise search for a host visible allocation.
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static constexpr auto HOST_MEMORY =
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VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
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static constexpr auto DYNAMIC_MEMORY = HOST_MEMORY | VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
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std::optional preferred_type = FindMemoryType(properties, DYNAMIC_MEMORY);
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if (!preferred_type) {
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preferred_type = FindMemoryType(properties, HOST_MEMORY);
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ASSERT_MSG(preferred_type, "No host visible and coherent memory type found");
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}
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return preferred_type.value_or(0);
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}
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} // Anonymous namespace
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VKStreamBuffer::VKStreamBuffer(const Device& device_, VKScheduler& scheduler_)
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: device{device_}, scheduler{scheduler_} {
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CreateBuffers();
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ReserveWatches(current_watches, WATCHES_INITIAL_RESERVE);
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ReserveWatches(previous_watches, WATCHES_INITIAL_RESERVE);
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}
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VKStreamBuffer::~VKStreamBuffer() = default;
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std::pair<u8*, u64> VKStreamBuffer::Map(u64 size, u64 alignment) {
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ASSERT(size <= stream_buffer_size);
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mapped_size = size;
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if (alignment > 0) {
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offset = Common::AlignUp(offset, alignment);
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}
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WaitPendingOperations(offset);
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if (offset + size > stream_buffer_size) {
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// The buffer would overflow, save the amount of used watches and reset the state.
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invalidation_mark = current_watch_cursor;
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current_watch_cursor = 0;
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offset = 0;
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// Swap watches and reset waiting cursors.
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std::swap(previous_watches, current_watches);
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wait_cursor = 0;
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wait_bound = 0;
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// Ensure that we don't wait for uncommitted fences.
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scheduler.Flush();
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}
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return std::make_pair(memory.Map(offset, size), offset);
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}
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void VKStreamBuffer::Unmap(u64 size) {
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ASSERT_MSG(size <= mapped_size, "Reserved size is too small");
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memory.Unmap();
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offset += size;
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if (current_watch_cursor + 1 >= current_watches.size()) {
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// Ensure that there are enough watches.
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ReserveWatches(current_watches, WATCHES_RESERVE_CHUNK);
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}
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auto& watch = current_watches[current_watch_cursor++];
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watch.upper_bound = offset;
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watch.tick = scheduler.CurrentTick();
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}
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void VKStreamBuffer::CreateBuffers() {
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const auto memory_properties = device.GetPhysical().GetMemoryProperties();
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const u32 preferred_type = GetMemoryType(memory_properties);
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const u32 preferred_heap = memory_properties.memoryTypes[preferred_type].heapIndex;
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// Substract from the preferred heap size some bytes to avoid getting out of memory.
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const VkDeviceSize heap_size = memory_properties.memoryHeaps[preferred_heap].size;
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// As per DXVK's example, using `heap_size / 2`
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const VkDeviceSize allocable_size = heap_size / 2;
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buffer = device.GetLogical().CreateBuffer({
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.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
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.pNext = nullptr,
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.flags = 0,
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.size = std::min(PREFERRED_STREAM_BUFFER_SIZE, allocable_size),
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.usage = BUFFER_USAGE,
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.sharingMode = VK_SHARING_MODE_EXCLUSIVE,
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.queueFamilyIndexCount = 0,
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.pQueueFamilyIndices = nullptr,
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});
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const auto requirements = device.GetLogical().GetBufferMemoryRequirements(*buffer);
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const u32 required_flags = requirements.memoryTypeBits;
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stream_buffer_size = static_cast<u64>(requirements.size);
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memory = device.GetLogical().AllocateMemory({
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.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
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.pNext = nullptr,
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.allocationSize = requirements.size,
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.memoryTypeIndex = GetMemoryType(memory_properties, required_flags),
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});
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buffer.BindMemory(*memory, 0);
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}
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void VKStreamBuffer::ReserveWatches(std::vector<Watch>& watches, std::size_t grow_size) {
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watches.resize(watches.size() + grow_size);
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}
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void VKStreamBuffer::WaitPendingOperations(u64 requested_upper_bound) {
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if (!invalidation_mark) {
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return;
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}
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while (requested_upper_bound < wait_bound && wait_cursor < *invalidation_mark) {
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auto& watch = previous_watches[wait_cursor];
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wait_bound = watch.upper_bound;
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scheduler.Wait(watch.tick);
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++wait_cursor;
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}
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}
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} // namespace Vulkan
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@ -1,76 +0,0 @@
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// Copyright 2019 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <optional>
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#include <utility>
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#include <vector>
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#include "common/common_types.h"
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#include "video_core/vulkan_common/vulkan_wrapper.h"
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namespace Vulkan {
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class Device;
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class VKFenceWatch;
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class VKScheduler;
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class VKStreamBuffer final {
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public:
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explicit VKStreamBuffer(const Device& device, VKScheduler& scheduler);
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~VKStreamBuffer();
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/**
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* Reserves a region of memory from the stream buffer.
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* @param size Size to reserve.
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* @returns A pair of a raw memory pointer (with offset added), and the buffer offset
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*/
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std::pair<u8*, u64> Map(u64 size, u64 alignment);
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/// Ensures that "size" bytes of memory are available to the GPU, potentially recording a copy.
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void Unmap(u64 size);
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VkBuffer Handle() const noexcept {
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return *buffer;
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}
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u64 Address() const noexcept {
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return 0;
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}
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private:
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struct Watch {
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u64 tick{};
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u64 upper_bound{};
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};
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/// Creates Vulkan buffer handles committing the required the required memory.
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void CreateBuffers();
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/// Increases the amount of watches available.
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void ReserveWatches(std::vector<Watch>& watches, std::size_t grow_size);
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void WaitPendingOperations(u64 requested_upper_bound);
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const Device& device; ///< Vulkan device manager.
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VKScheduler& scheduler; ///< Command scheduler.
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vk::Buffer buffer; ///< Mapped buffer.
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vk::DeviceMemory memory; ///< Memory allocation.
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u64 stream_buffer_size{}; ///< Stream buffer size.
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u64 offset{}; ///< Buffer iterator.
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u64 mapped_size{}; ///< Size reserved for the current copy.
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std::vector<Watch> current_watches; ///< Watches recorded in the current iteration.
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std::size_t current_watch_cursor{}; ///< Count of watches, reset on invalidation.
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std::optional<std::size_t> invalidation_mark; ///< Number of watches used in the previous cycle.
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std::vector<Watch> previous_watches; ///< Watches used in the previous iteration.
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std::size_t wait_cursor{}; ///< Last watch being waited for completion.
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u64 wait_bound{}; ///< Highest offset being watched for completion.
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};
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} // namespace Vulkan
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