early-access version 2626

This commit is contained in:
pineappleEA 2022-04-01 01:16:07 +02:00
parent 0058dc28e8
commit b437dc9ae8
3 changed files with 44 additions and 32 deletions

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@ -1,7 +1,7 @@
yuzu emulator early access
=============
This is the source code for early-access 2624.
This is the source code for early-access 2626.
## Legal Notice

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@ -29,7 +29,10 @@ constexpr VkDeviceSize MAX_ALIGNMENT = 256;
constexpr VkDeviceSize MAX_STREAM_BUFFER_REQUEST_SIZE = 8_MiB;
// Stream buffer size in bytes
constexpr VkDeviceSize STREAM_BUFFER_SIZE = 128_MiB;
constexpr VkDeviceSize REGION_SIZE = STREAM_BUFFER_SIZE / StagingBufferPool::NUM_SYNCS;
constexpr VkDeviceSize REGION_SIZE = STREAM_BUFFER_SIZE / StagingBufferPool::NUM_STREAM_REGIONS;
static_assert(Common::IsAligned(REGION_SIZE, MAX_ALIGNMENT),
"Stream buffer region size must be VK buffer aligned");
constexpr VkMemoryPropertyFlags HOST_FLAGS =
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
@ -83,6 +86,17 @@ u32 FindMemoryTypeIndex(const VkPhysicalDeviceMemoryProperties& props, u32 type_
size_t Region(size_t iterator) noexcept {
return iterator / REGION_SIZE;
}
constexpr std::array<VkDeviceSize, StagingBufferPool::NUM_STREAM_REGIONS> MakeStreamBufferOffset() {
std::array<VkDeviceSize, StagingBufferPool::NUM_STREAM_REGIONS> offsets{};
for (size_t i = 0; i < StagingBufferPool::NUM_STREAM_REGIONS; ++i) {
offsets[i] = static_cast<VkDeviceSize>(i * REGION_SIZE);
}
return offsets;
}
constexpr auto STREAM_BUFFER_OFFSETS_LUT = MakeStreamBufferOffset();
} // Anonymous namespace
StagingBufferPool::StagingBufferPool(const Device& device_, MemoryAllocator& memory_allocator_,
@ -159,31 +173,19 @@ void StagingBufferPool::TickFrame() {
}
StagingBufferRef StagingBufferPool::GetStreamBuffer(size_t size) {
if (AreRegionsActive(Region(free_iterator) + 1,
std::min(Region(iterator + size) + 1, NUM_SYNCS))) {
const auto num_requested_regions = Region(size) + 1;
const auto available_index = NextAvailableStreamIndex(num_requested_regions);
if (!available_index) {
// 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);
const auto begin_itr = sync_ticks.begin() + *available_index;
std::fill(begin_itr, begin_itr + num_requested_regions, current_tick);
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);
const VkDeviceSize offset = STREAM_BUFFER_OFFSETS_LUT[*available_index];
ASSERT(offset + size <= STREAM_BUFFER_SIZE);
next_index = (*available_index + num_requested_regions) % NUM_STREAM_REGIONS;
return StagingBufferRef{
.buffer = *stream_buffer,
.offset = static_cast<VkDeviceSize>(offset),
@ -191,10 +193,22 @@ StagingBufferRef StagingBufferPool::GetStreamBuffer(size_t size) {
};
}
bool StagingBufferPool::AreRegionsActive(size_t region_begin, size_t region_end) const {
const u64 gpu_tick = scheduler.GetMasterSemaphore().KnownGpuTick();
return std::any_of(sync_ticks.begin() + region_begin, sync_ticks.begin() + region_end,
[gpu_tick](u64 sync_tick) { return gpu_tick < sync_tick; });
std::optional<size_t> StagingBufferPool::NextAvailableStreamIndex(size_t num_regions) const {
const auto is_index_available = [this, num_regions](size_t begin_offset) {
const u64 gpu_tick = scheduler.GetMasterSemaphore().KnownGpuTick();
const auto tick_check = [gpu_tick](u64 sync_tick) { return gpu_tick >= sync_tick; };
const auto begin_itr = sync_ticks.begin() + begin_offset;
const bool is_available = std::all_of(begin_itr, begin_itr + num_regions, tick_check);
return is_available ? std::optional(begin_offset) : std::nullopt;
};
// Avoid overflow
if (next_index + num_regions <= NUM_STREAM_REGIONS) {
return is_index_available(next_index);
}
// Not enough contiguous regions at the next_index,
// Check if the contiguous range in the front is available
return is_index_available(0);
};
StagingBufferRef StagingBufferPool::GetStagingBuffer(size_t size, MemoryUsage usage) {

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@ -25,7 +25,7 @@ struct StagingBufferRef {
class StagingBufferPool {
public:
static constexpr size_t NUM_SYNCS = 16;
static constexpr size_t NUM_STREAM_REGIONS = 0x8000;
explicit StagingBufferPool(const Device& device, MemoryAllocator& memory_allocator,
VKScheduler& scheduler);
@ -67,7 +67,7 @@ private:
StagingBufferRef GetStreamBuffer(size_t size);
bool AreRegionsActive(size_t region_begin, size_t region_end) const;
std::optional<size_t> NextAvailableStreamIndex(size_t num_regions) const;
StagingBufferRef GetStagingBuffer(size_t size, MemoryUsage usage);
@ -89,10 +89,8 @@ private:
vk::DeviceMemory stream_memory;
u8* stream_pointer = nullptr;
size_t iterator = 0;
size_t used_iterator = 0;
size_t free_iterator = 0;
std::array<u64, NUM_SYNCS> sync_ticks{};
size_t next_index = 0;
std::array<u64, NUM_STREAM_REGIONS> sync_ticks{};
StagingBuffersCache device_local_cache;
StagingBuffersCache upload_cache;