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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <memory>
#include <vector>
#include "common/common_types.h"
#include "video_core/renderer_vulkan/declarations.h"
#include "video_core/renderer_vulkan/vk_descriptor_pool.h"
#include "video_core/renderer_vulkan/vk_device.h"
#include "video_core/renderer_vulkan/vk_resource_manager.h"
namespace Vulkan {
// Prefer small grow rates to avoid saturating the descriptor pool with barely used pipelines.
constexpr std::size_t SETS_GROW_RATE = 0x20;
DescriptorAllocator::DescriptorAllocator(VKDescriptorPool& descriptor_pool,
vk::DescriptorSetLayout layout)
: VKFencedPool{SETS_GROW_RATE}, descriptor_pool{descriptor_pool}, layout{layout} {}
DescriptorAllocator::~DescriptorAllocator() = default;
vk::DescriptorSet DescriptorAllocator::Commit(VKFence& fence) {
return *descriptors[CommitResource(fence)];
}
void DescriptorAllocator::Allocate(std::size_t begin, std::size_t end) {
auto new_sets = descriptor_pool.AllocateDescriptors(layout, end - begin);
descriptors.insert(descriptors.end(), std::make_move_iterator(new_sets.begin()),
std::make_move_iterator(new_sets.end()));
}
VKDescriptorPool::VKDescriptorPool(const VKDevice& device)
: device{device}, active_pool{AllocateNewPool()} {}
VKDescriptorPool::~VKDescriptorPool() = default;
vk::DescriptorPool VKDescriptorPool::AllocateNewPool() {
static constexpr u32 num_sets = 0x20000;
static constexpr vk::DescriptorPoolSize pool_sizes[] = {
{vk::DescriptorType::eUniformBuffer, num_sets * 90},
{vk::DescriptorType::eStorageBuffer, num_sets * 60},
{vk::DescriptorType::eUniformTexelBuffer, num_sets * 64},
{vk::DescriptorType::eCombinedImageSampler, num_sets * 64},
{vk::DescriptorType::eStorageImage, num_sets * 40}};
const vk::DescriptorPoolCreateInfo create_info(
vk::DescriptorPoolCreateFlagBits::eFreeDescriptorSet, num_sets,
static_cast<u32>(std::size(pool_sizes)), std::data(pool_sizes));
const auto dev = device.GetLogical();
return *pools.emplace_back(
dev.createDescriptorPoolUnique(create_info, nullptr, device.GetDispatchLoader()));
}
std::vector<UniqueDescriptorSet> VKDescriptorPool::AllocateDescriptors(
vk::DescriptorSetLayout layout, std::size_t count) {
std::vector layout_copies(count, layout);
vk::DescriptorSetAllocateInfo allocate_info(active_pool, static_cast<u32>(count),
layout_copies.data());
std::vector<vk::DescriptorSet> sets(count);
const auto dev = device.GetLogical();
const auto& dld = device.GetDispatchLoader();
switch (const auto result = dev.allocateDescriptorSets(&allocate_info, sets.data(), dld)) {
case vk::Result::eSuccess:
break;
case vk::Result::eErrorOutOfPoolMemory:
active_pool = AllocateNewPool();
allocate_info.descriptorPool = active_pool;
if (dev.allocateDescriptorSets(&allocate_info, sets.data(), dld) == vk::Result::eSuccess) {
break;
}
[[fallthrough]];
default:
vk::throwResultException(result, "vk::Device::allocateDescriptorSetsUnique");
}
vk::PoolFree deleter(dev, active_pool, dld);
std::vector<UniqueDescriptorSet> unique_sets;
unique_sets.reserve(count);
for (const auto set : sets) {
unique_sets.push_back(UniqueDescriptorSet{set, deleter});
}
return unique_sets;
}
} // namespace Vulkan
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