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author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2020-09-10 08:43:30 +0200 |
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committer | ReinUsesLisp <reinuseslisp@airmail.cc> | 2020-09-19 06:46:37 +0200 |
commit | 58b0ae84b56996304b6ad373e4f6cff2cf6bdd41 (patch) | |
tree | 9b7c3e28fa7445c78304902efe660356c59cad57 /src/video_core/renderer_vulkan/vk_resource_pool.cpp | |
parent | Merge pull request #4663 from ReinUsesLisp/wswitch (diff) | |
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Diffstat (limited to 'src/video_core/renderer_vulkan/vk_resource_pool.cpp')
-rw-r--r-- | src/video_core/renderer_vulkan/vk_resource_pool.cpp | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/video_core/renderer_vulkan/vk_resource_pool.cpp b/src/video_core/renderer_vulkan/vk_resource_pool.cpp new file mode 100644 index 000000000..ee274ac59 --- /dev/null +++ b/src/video_core/renderer_vulkan/vk_resource_pool.cpp @@ -0,0 +1,63 @@ +// Copyright 2020 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <optional> + +#include "video_core/renderer_vulkan/vk_master_semaphore.h" +#include "video_core/renderer_vulkan/vk_resource_pool.h" + +namespace Vulkan { + +ResourcePool::ResourcePool(MasterSemaphore& master_semaphore_, size_t grow_step_) + : master_semaphore{master_semaphore_}, grow_step{grow_step_} {} + +ResourcePool::~ResourcePool() = default; + +size_t ResourcePool::CommitResource() { + // Refresh semaphore to query updated results + master_semaphore.Refresh(); + + const auto search = [this](size_t begin, size_t end) -> std::optional<size_t> { + for (size_t iterator = begin; iterator < end; ++iterator) { + if (master_semaphore.IsFree(ticks[iterator])) { + ticks[iterator] = master_semaphore.CurrentTick(); + return iterator; + } + } + return {}; + }; + // Try to find a free resource from the hinted position to the end. + auto found = search(free_iterator, ticks.size()); + if (!found) { + // Search from beginning to the hinted position. + found = search(0, free_iterator); + if (!found) { + // Both searches failed, the pool is full; handle it. + const size_t free_resource = ManageOverflow(); + + ticks[free_resource] = master_semaphore.CurrentTick(); + found = free_resource; + } + } + // Free iterator is hinted to the resource after the one that's been commited. + free_iterator = (*found + 1) % ticks.size(); + return *found; +} + +size_t ResourcePool::ManageOverflow() { + const size_t old_capacity = ticks.size(); + Grow(); + + // The last entry is guaranted to be free, since it's the first element of the freshly + // allocated resources. + return old_capacity; +} + +void ResourcePool::Grow() { + const size_t old_capacity = ticks.size(); + ticks.resize(old_capacity + grow_step); + Allocate(old_capacity, old_capacity + grow_step); +} + +} // namespace Vulkan |