forked from suyu/suyu
353 lines
13 KiB
C++
353 lines
13 KiB
C++
// Copyright 2018 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 <bit>
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#include <optional>
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#include <vector>
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#include <glad/glad.h>
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#include "common/alignment.h"
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "video_core/vulkan_common/vulkan_device.h"
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#include "video_core/vulkan_common/vulkan_memory_allocator.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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struct Range {
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u64 begin;
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u64 end;
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[[nodiscard]] bool Contains(u64 iterator, u64 size) const noexcept {
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return iterator < end && begin < iterator + size;
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}
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};
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[[nodiscard]] u64 AllocationChunkSize(u64 required_size) {
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static constexpr std::array sizes{
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0x1000ULL << 10, 0x1400ULL << 10, 0x1800ULL << 10, 0x1c00ULL << 10, 0x2000ULL << 10,
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0x3200ULL << 10, 0x4000ULL << 10, 0x6000ULL << 10, 0x8000ULL << 10, 0xA000ULL << 10,
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0x10000ULL << 10, 0x18000ULL << 10, 0x20000ULL << 10,
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};
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static_assert(std::is_sorted(sizes.begin(), sizes.end()));
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const auto it = std::ranges::lower_bound(sizes, required_size);
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return it != sizes.end() ? *it : Common::AlignUp(required_size, 4ULL << 20);
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}
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[[nodiscard]] VkMemoryPropertyFlags MemoryUsagePropertyFlags(MemoryUsage usage) {
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switch (usage) {
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case MemoryUsage::DeviceLocal:
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return VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
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case MemoryUsage::Upload:
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return VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
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case MemoryUsage::Download:
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return VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT |
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VK_MEMORY_PROPERTY_HOST_CACHED_BIT;
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}
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UNREACHABLE_MSG("Invalid memory usage={}", usage);
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return VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
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}
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constexpr VkExportMemoryAllocateInfo EXPORT_ALLOCATE_INFO{
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.sType = VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO,
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.pNext = nullptr,
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#ifdef _WIN32
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.handleTypes = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT,
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#elif __unix__
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.handleTypes = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT,
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#else
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.handleTypes = 0,
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#endif
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};
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} // Anonymous namespace
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class MemoryAllocation {
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public:
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explicit MemoryAllocation(MemoryAllocator* const allocator_, vk::DeviceMemory memory_,
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VkMemoryPropertyFlags properties, u64 allocation_size_, u32 type)
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: allocator{allocator_}, memory{std::move(memory_)}, allocation_size{allocation_size_},
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property_flags{properties}, shifted_memory_type{1U << type} {}
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#if defined(_WIN32) || defined(__unix__)
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~MemoryAllocation() {
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if (owning_opengl_handle != 0) {
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glDeleteMemoryObjectsEXT(1, &owning_opengl_handle);
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}
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}
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#endif
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MemoryAllocation& operator=(const MemoryAllocation&) = delete;
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MemoryAllocation(const MemoryAllocation&) = delete;
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MemoryAllocation& operator=(MemoryAllocation&&) = delete;
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MemoryAllocation(MemoryAllocation&&) = delete;
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[[nodiscard]] std::optional<MemoryCommit> Commit(VkDeviceSize size, VkDeviceSize alignment) {
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const std::optional<u64> alloc = FindFreeRegion(size, alignment);
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if (!alloc) {
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// Signal out of memory, it'll try to do more allocations.
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return std::nullopt;
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}
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const Range range{
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.begin = *alloc,
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.end = *alloc + size,
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};
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commits.insert(std::ranges::upper_bound(commits, *alloc, {}, &Range::begin), range);
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return std::make_optional<MemoryCommit>(this, *memory, *alloc, *alloc + size);
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}
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void Free(u64 begin) {
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const auto it = std::ranges::find(commits, begin, &Range::begin);
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ASSERT_MSG(it != commits.end(), "Invalid commit");
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commits.erase(it);
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if (commits.empty()) {
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// Do not call any code involving 'this' after this call, the object will be destroyed
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allocator->ReleaseMemory(this);
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}
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}
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[[nodiscard]] std::span<u8> Map() {
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if (memory_mapped_span.empty()) {
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u8* const raw_pointer = memory.Map(0, allocation_size);
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memory_mapped_span = std::span<u8>(raw_pointer, allocation_size);
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}
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return memory_mapped_span;
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}
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#ifdef _WIN32
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[[nodiscard]] u32 ExportOpenGLHandle() {
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if (!owning_opengl_handle) {
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glCreateMemoryObjectsEXT(1, &owning_opengl_handle);
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glImportMemoryWin32HandleEXT(owning_opengl_handle, allocation_size,
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GL_HANDLE_TYPE_OPAQUE_WIN32_EXT,
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memory.GetMemoryWin32HandleKHR());
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}
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return owning_opengl_handle;
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}
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#elif __unix__
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[[nodiscard]] u32 ExportOpenGLHandle() {
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if (!owning_opengl_handle) {
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glCreateMemoryObjectsEXT(1, &owning_opengl_handle);
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glImportMemoryFdEXT(owning_opengl_handle, allocation_size, GL_HANDLE_TYPE_OPAQUE_FD_EXT,
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memory.GetMemoryFdKHR());
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}
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return owning_opengl_handle;
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}
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#else
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[[nodiscard]] u32 ExportOpenGLHandle() {
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return 0;
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}
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#endif
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/// Returns whether this allocation is compatible with the arguments.
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[[nodiscard]] bool IsCompatible(VkMemoryPropertyFlags flags, u32 type_mask) const {
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return (flags & property_flags) == property_flags && (type_mask & shifted_memory_type) != 0;
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}
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private:
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[[nodiscard]] static constexpr u32 ShiftType(u32 type) {
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return 1U << type;
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}
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[[nodiscard]] std::optional<u64> FindFreeRegion(u64 size, u64 alignment) noexcept {
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ASSERT(std::has_single_bit(alignment));
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const u64 alignment_log2 = std::countr_zero(alignment);
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std::optional<u64> candidate;
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u64 iterator = 0;
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auto commit = commits.begin();
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while (iterator + size <= allocation_size) {
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candidate = candidate.value_or(iterator);
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if (commit == commits.end()) {
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break;
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}
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if (commit->Contains(*candidate, size)) {
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candidate = std::nullopt;
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}
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iterator = Common::AlignUpLog2(commit->end, alignment_log2);
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++commit;
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}
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return candidate;
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}
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MemoryAllocator* const allocator; ///< Parent memory allocation.
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const vk::DeviceMemory memory; ///< Vulkan memory allocation handler.
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const u64 allocation_size; ///< Size of this allocation.
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const VkMemoryPropertyFlags property_flags; ///< Vulkan memory property flags.
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const u32 shifted_memory_type; ///< Shifted Vulkan memory type.
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std::vector<Range> commits; ///< All commit ranges done from this allocation.
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std::span<u8> memory_mapped_span; ///< Memory mapped span. Empty if not queried before.
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#if defined(_WIN32) || defined(__unix__)
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u32 owning_opengl_handle{}; ///< Owning OpenGL memory object handle.
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#endif
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};
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MemoryCommit::MemoryCommit(MemoryAllocation* allocation_, VkDeviceMemory memory_, u64 begin_,
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u64 end_) noexcept
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: allocation{allocation_}, memory{memory_}, begin{begin_}, end{end_} {}
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MemoryCommit::~MemoryCommit() {
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Release();
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}
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MemoryCommit& MemoryCommit::operator=(MemoryCommit&& rhs) noexcept {
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Release();
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allocation = std::exchange(rhs.allocation, nullptr);
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memory = rhs.memory;
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begin = rhs.begin;
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end = rhs.end;
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span = std::exchange(rhs.span, std::span<u8>{});
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return *this;
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}
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MemoryCommit::MemoryCommit(MemoryCommit&& rhs) noexcept
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: allocation{std::exchange(rhs.allocation, nullptr)}, memory{rhs.memory}, begin{rhs.begin},
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end{rhs.end}, span{std::exchange(rhs.span, std::span<u8>{})} {}
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std::span<u8> MemoryCommit::Map() {
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if (span.empty()) {
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span = allocation->Map().subspan(begin, end - begin);
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}
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return span;
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}
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u32 MemoryCommit::ExportOpenGLHandle() const {
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return allocation->ExportOpenGLHandle();
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}
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void MemoryCommit::Release() {
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if (allocation) {
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allocation->Free(begin);
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}
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}
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MemoryAllocator::MemoryAllocator(const Device& device_, bool export_allocations_)
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: device{device_}, properties{device_.GetPhysical().GetMemoryProperties()},
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export_allocations{export_allocations_} {}
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MemoryAllocator::~MemoryAllocator() = default;
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MemoryCommit MemoryAllocator::Commit(const VkMemoryRequirements& requirements, MemoryUsage usage) {
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// Find the fastest memory flags we can afford with the current requirements
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const u32 type_mask = requirements.memoryTypeBits;
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const VkMemoryPropertyFlags usage_flags = MemoryUsagePropertyFlags(usage);
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const VkMemoryPropertyFlags flags = MemoryPropertyFlags(type_mask, usage_flags);
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if (std::optional<MemoryCommit> commit = TryCommit(requirements, flags)) {
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return std::move(*commit);
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}
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// Commit has failed, allocate more memory.
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const u64 chunk_size = AllocationChunkSize(requirements.size);
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if (!TryAllocMemory(flags, type_mask, chunk_size)) {
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// TODO(Rodrigo): Handle out of memory situations in some way like flushing to guest memory.
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throw vk::Exception(VK_ERROR_OUT_OF_DEVICE_MEMORY);
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}
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// Commit again, this time it won't fail since there's a fresh allocation above.
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// If it does, there's a bug.
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return TryCommit(requirements, flags).value();
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}
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MemoryCommit MemoryAllocator::Commit(const vk::Buffer& buffer, MemoryUsage usage) {
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auto commit = Commit(device.GetLogical().GetBufferMemoryRequirements(*buffer), usage);
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buffer.BindMemory(commit.Memory(), commit.Offset());
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return commit;
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}
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MemoryCommit MemoryAllocator::Commit(const vk::Image& image, MemoryUsage usage) {
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auto commit = Commit(device.GetLogical().GetImageMemoryRequirements(*image), usage);
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image.BindMemory(commit.Memory(), commit.Offset());
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return commit;
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}
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bool MemoryAllocator::TryAllocMemory(VkMemoryPropertyFlags flags, u32 type_mask, u64 size) {
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const u32 type = FindType(flags, type_mask).value();
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vk::DeviceMemory memory = device.GetLogical().TryAllocateMemory({
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.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
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.pNext = export_allocations ? &EXPORT_ALLOCATE_INFO : nullptr,
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.allocationSize = size,
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.memoryTypeIndex = type,
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});
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if (!memory) {
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if ((flags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) != 0) {
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// Try to allocate non device local memory
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return TryAllocMemory(flags & ~VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, type_mask, size);
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} else {
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// RIP
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return false;
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}
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}
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allocations.push_back(
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std::make_unique<MemoryAllocation>(this, std::move(memory), flags, size, type));
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return true;
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}
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void MemoryAllocator::ReleaseMemory(MemoryAllocation* alloc) {
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const auto it = std::ranges::find(allocations, alloc, &std::unique_ptr<MemoryAllocation>::get);
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ASSERT(it != allocations.end());
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allocations.erase(it);
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}
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std::optional<MemoryCommit> MemoryAllocator::TryCommit(const VkMemoryRequirements& requirements,
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VkMemoryPropertyFlags flags) {
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for (auto& allocation : allocations) {
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if (!allocation->IsCompatible(flags, requirements.memoryTypeBits)) {
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continue;
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}
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if (auto commit = allocation->Commit(requirements.size, requirements.alignment)) {
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return commit;
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}
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}
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if ((flags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) != 0) {
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// Look for non device local commits on failure
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return TryCommit(requirements, flags & ~VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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}
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return std::nullopt;
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}
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VkMemoryPropertyFlags MemoryAllocator::MemoryPropertyFlags(u32 type_mask,
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VkMemoryPropertyFlags flags) const {
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if (FindType(flags, type_mask)) {
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// Found a memory type with those requirements
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return flags;
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}
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if ((flags & VK_MEMORY_PROPERTY_HOST_CACHED_BIT) != 0) {
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// Remove host cached bit in case it's not supported
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return MemoryPropertyFlags(type_mask, flags & ~VK_MEMORY_PROPERTY_HOST_CACHED_BIT);
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}
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if ((flags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) != 0) {
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// Remove device local, if it's not supported by the requested resource
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return MemoryPropertyFlags(type_mask, flags & ~VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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}
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UNREACHABLE_MSG("No compatible memory types found");
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return 0;
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}
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std::optional<u32> MemoryAllocator::FindType(VkMemoryPropertyFlags flags, u32 type_mask) const {
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for (u32 type_index = 0; type_index < properties.memoryTypeCount; ++type_index) {
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const VkMemoryPropertyFlags type_flags = properties.memoryTypes[type_index].propertyFlags;
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if ((type_mask & (1U << type_index)) != 0 && (type_flags & flags) == flags) {
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// The type matches in type and in the wanted properties.
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return type_index;
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}
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}
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// Failed to find index
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return std::nullopt;
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}
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bool IsHostVisible(MemoryUsage usage) noexcept {
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switch (usage) {
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case MemoryUsage::DeviceLocal:
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return false;
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case MemoryUsage::Upload:
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case MemoryUsage::Download:
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return true;
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}
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UNREACHABLE_MSG("Invalid memory usage={}", usage);
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return false;
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}
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} // namespace Vulkan
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