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Merge pull request #6557 from FernandoS27/staceys-mom-has-got-it-goin-on

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Buffer Cache: Fix High downloads / Fence manager: Improve fence checking.
This commit is contained in:
Ameer J 2021-07-10 16:06:19 -04:00 committed by GitHub
commit 907b2324d3
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 229 additions and 80 deletions
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2
src/tests/video_core/buffer_base.cpp
View file

@ -536,7 +536,7 @@ TEST_CASE("BufferBase: Cached write downloads") {
REQUIRE(rasterizer.Count() == 63);
buffer.MarkRegionAsGpuModified(c + PAGE, PAGE);
int num = 0;
buffer.ForEachDownloadRange(c, WORD, [&](u64 offset, u64 size) { ++num; });
buffer.ForEachDownloadRangeAndClear(c, WORD, [&](u64 offset, u64 size) { ++num; });
buffer.ForEachUploadRange(c, WORD, [&](u64 offset, u64 size) { ++num; });
REQUIRE(num == 0);
REQUIRE(!buffer.IsRegionCpuModified(c + PAGE, PAGE));

19
src/video_core/buffer_cache/buffer_base.h
View file

@ -226,19 +226,24 @@ public:
/// Call 'func' for each CPU modified range and unmark those pages as CPU modified
template <typename Func>
void ForEachUploadRange(VAddr query_cpu_range, u64 size, Func&& func) {
ForEachModifiedRange<Type::CPU>(query_cpu_range, size, func);
ForEachModifiedRange<Type::CPU>(query_cpu_range, size, true, func);
}
/// Call 'func' for each GPU modified range and unmark those pages as GPU modified
template <typename Func>
void ForEachDownloadRange(VAddr query_cpu_range, u64 size, Func&& func) {
ForEachModifiedRange<Type::GPU>(query_cpu_range, size, func);
void ForEachDownloadRange(VAddr query_cpu_range, u64 size, bool clear, Func&& func) {
ForEachModifiedRange<Type::GPU>(query_cpu_range, size, clear, func);
}
template <typename Func>
void ForEachDownloadRangeAndClear(VAddr query_cpu_range, u64 size, Func&& func) {
ForEachModifiedRange<Type::GPU>(query_cpu_range, size, true, func);
}
/// Call 'func' for each GPU modified range and unmark those pages as GPU modified
template <typename Func>
void ForEachDownloadRange(Func&& func) {
ForEachModifiedRange<Type::GPU>(cpu_addr, SizeBytes(), func);
ForEachModifiedRange<Type::GPU>(cpu_addr, SizeBytes(), true, func);
}
/// Mark buffer as picked
@ -415,7 +420,7 @@ private:
* @param func Function to call for each turned off region
*/
template <Type type, typename Func>
void ForEachModifiedRange(VAddr query_cpu_range, s64 size, Func&& func) {
void ForEachModifiedRange(VAddr query_cpu_range, s64 size, bool clear, Func&& func) {
static_assert(type != Type::Untracked);
const s64 difference = query_cpu_range - cpu_addr;
@ -467,7 +472,9 @@ private:
bits = (bits << left_offset) >> left_offset;
const u64 current_word = state_words[word_index] & bits;
state_words[word_index] &= ~bits;
if (clear) {
state_words[word_index] &= ~bits;
}
if constexpr (type == Type::CPU) {
const u64 current_bits = untracked_words[word_index] & bits;

242
src/video_core/buffer_cache/buffer_cache.h
View file

@ -15,6 +15,7 @@
#include <vector>
#include <boost/container/small_vector.hpp>
#include <boost/icl/interval_set.hpp>
#include "common/common_types.h"
#include "common/div_ceil.h"
@ -77,6 +78,9 @@ class BufferCache {
using Runtime = typename P::Runtime;
using Buffer = typename P::Buffer;
using IntervalSet = boost::icl::interval_set<VAddr>;
using IntervalType = typename IntervalSet::interval_type;
struct Empty {};
struct OverlapResult {
@ -148,11 +152,14 @@ public:
/// Return true when there are uncommitted buffers to be downloaded
[[nodiscard]] bool HasUncommittedFlushes() const noexcept;
void AccumulateFlushes();
/// Return true when the caller should wait for async downloads
[[nodiscard]] bool ShouldWaitAsyncFlushes() const noexcept;
/// Commit asynchronous downloads
void CommitAsyncFlushes();
void CommitAsyncFlushesHigh();
/// Pop asynchronous downloads
void PopAsyncFlushes();
@ -160,6 +167,9 @@ public:
/// Return true when a CPU region is modified from the GPU
[[nodiscard]] bool IsRegionGpuModified(VAddr addr, size_t size);
/// Return true when a CPU region is modified from the CPU
[[nodiscard]] bool IsRegionCpuModified(VAddr addr, size_t size);
std::mutex mutex;
private:
@ -272,8 +282,6 @@ private:
void DeleteBuffer(BufferId buffer_id);
void ReplaceBufferDownloads(BufferId old_buffer_id, BufferId new_buffer_id);
void NotifyBufferDeletion();
[[nodiscard]] Binding StorageBufferBinding(GPUVAddr ssbo_addr) const;
@ -327,9 +335,9 @@ private:
std::vector<BufferId> cached_write_buffer_ids;
// TODO: This data structure is not optimal and it should be reworked
std::vector<BufferId> uncommitted_downloads;
std::deque<std::vector<BufferId>> committed_downloads;
IntervalSet uncommitted_ranges;
IntervalSet common_ranges;
std::deque<IntervalSet> committed_ranges;
size_t immediate_buffer_capacity = 0;
std::unique_ptr<u8[]> immediate_buffer_alloc;
@ -352,6 +360,7 @@ BufferCache<P>::BufferCache(VideoCore::RasterizerInterface& rasterizer_,
// Ensure the first slot is used for the null buffer
void(slot_buffers.insert(runtime, NullBufferParams{}));
deletion_iterator = slot_buffers.end();
common_ranges.clear();
}
template <class P>
@ -547,29 +556,30 @@ void BufferCache<P>::FlushCachedWrites() {
template <class P>
bool BufferCache<P>::HasUncommittedFlushes() const noexcept {
return !uncommitted_downloads.empty();
return !uncommitted_ranges.empty() || !committed_ranges.empty();
}
template <class P>
void BufferCache<P>::AccumulateFlushes() {
if (Settings::values.gpu_accuracy.GetValue() != Settings::GPUAccuracy::High) {
uncommitted_ranges.clear();
return;
}
if (uncommitted_ranges.empty()) {
return;
}
committed_ranges.emplace_back(std::move(uncommitted_ranges));
}
template <class P>
bool BufferCache<P>::ShouldWaitAsyncFlushes() const noexcept {
return !committed_downloads.empty() && !committed_downloads.front().empty();
return false;
}
template <class P>
void BufferCache<P>::CommitAsyncFlushes() {
// This is intentionally passing the value by copy
committed_downloads.push_front(uncommitted_downloads);
uncommitted_downloads.clear();
}
template <class P>
void BufferCache<P>::PopAsyncFlushes() {
if (committed_downloads.empty()) {
return;
}
auto scope_exit_pop_download = detail::ScopeExit([this] { committed_downloads.pop_back(); });
const std::span<const BufferId> download_ids = committed_downloads.back();
if (download_ids.empty()) {
void BufferCache<P>::CommitAsyncFlushesHigh() {
AccumulateFlushes();
if (committed_ranges.empty()) {
return;
}
MICROPROFILE_SCOPE(GPU_DownloadMemory);
@ -577,20 +587,66 @@ void BufferCache<P>::PopAsyncFlushes() {
boost::container::small_vector<std::pair<BufferCopy, BufferId>, 1> downloads;
u64 total_size_bytes = 0;
u64 largest_copy = 0;
for (const BufferId buffer_id : download_ids) {
slot_buffers[buffer_id].ForEachDownloadRange([&](u64 range_offset, u64 range_size) {
downloads.push_back({
BufferCopy{
.src_offset = range_offset,
.dst_offset = total_size_bytes,
.size = range_size,
},
buffer_id,
for (const IntervalSet& intervals : committed_ranges) {
for (auto& interval : intervals) {
const std::size_t size = interval.upper() - interval.lower();
const VAddr cpu_addr = interval.lower();
ForEachBufferInRange(cpu_addr, size, [&](BufferId buffer_id, Buffer& buffer) {
boost::container::small_vector<BufferCopy, 1> copies;
buffer.ForEachDownloadRangeAndClear(
cpu_addr, size, [&](u64 range_offset, u64 range_size) {
const VAddr buffer_addr = buffer.CpuAddr();
const auto add_download = [&](VAddr start, VAddr end) {
const u64 new_offset = start - buffer_addr;
const u64 new_size = end - start;
downloads.push_back({
BufferCopy{
.src_offset = new_offset,
.dst_offset = total_size_bytes,
.size = new_size,
},
buffer_id,
});
// Align up to avoid cache conflicts
constexpr u64 align = 256ULL;
constexpr u64 mask = ~(align - 1ULL);
total_size_bytes += (new_size + align - 1) & mask;
largest_copy = std::max(largest_copy, new_size);
};
const VAddr start_address = buffer_addr + range_offset;
const VAddr end_address = start_address + range_size;
const IntervalType search_interval{cpu_addr, 1};
auto it = common_ranges.lower_bound(search_interval);
if (it == common_ranges.end()) {
it = common_ranges.begin();
}
while (it != common_ranges.end()) {
VAddr inter_addr_end = it->upper();
VAddr inter_addr = it->lower();
if (inter_addr >= end_address) {
break;
}
if (inter_addr_end <= start_address) {
it++;
continue;
}
if (inter_addr_end > end_address) {
inter_addr_end = end_address;
}
if (inter_addr < start_address) {
inter_addr = start_address;
}
add_download(inter_addr, inter_addr_end);
it++;
}
const IntervalType subtract_interval{start_address, end_address};
common_ranges.subtract(subtract_interval);
});
});
total_size_bytes += range_size;
largest_copy = std::max(largest_copy, range_size);
});
}
}
committed_ranges.clear();
if (downloads.empty()) {
return;
}
@ -622,6 +678,19 @@ void BufferCache<P>::PopAsyncFlushes() {
}
}
template <class P>
void BufferCache<P>::CommitAsyncFlushes() {
if (Settings::values.gpu_accuracy.GetValue() == Settings::GPUAccuracy::High) {
CommitAsyncFlushesHigh();
} else {
uncommitted_ranges.clear();
committed_ranges.clear();
}
}
template <class P>
void BufferCache<P>::PopAsyncFlushes() {}
template <class P>
bool BufferCache<P>::IsRegionGpuModified(VAddr addr, size_t size) {
const u64 page_end = Common::DivCeil(addr + size, PAGE_SIZE);
@ -641,6 +710,25 @@ bool BufferCache<P>::IsRegionGpuModified(VAddr addr, size_t size) {
return false;
}
template <class P>
bool BufferCache<P>::IsRegionCpuModified(VAddr addr, size_t size) {
const u64 page_end = Common::DivCeil(addr + size, PAGE_SIZE);
for (u64 page = addr >> PAGE_BITS; page < page_end;) {
const BufferId image_id = page_table[page];
if (!image_id) {
++page;
continue;
}
Buffer& buffer = slot_buffers[image_id];
if (buffer.IsRegionCpuModified(addr, size)) {
return true;
}
const VAddr end_addr = buffer.CpuAddr() + buffer.SizeBytes();
page = Common::DivCeil(end_addr, PAGE_SIZE);
}
return false;
}
template <class P>
void BufferCache<P>::BindHostIndexBuffer() {
Buffer& buffer = slot_buffers[index_buffer.buffer_id];
@ -1010,16 +1098,16 @@ void BufferCache<P>::MarkWrittenBuffer(BufferId buffer_id, VAddr cpu_addr, u32 s
Buffer& buffer = slot_buffers[buffer_id];
buffer.MarkRegionAsGpuModified(cpu_addr, size);
const bool is_accuracy_high = Settings::IsGPULevelHigh();
const IntervalType base_interval{cpu_addr, cpu_addr + size};
common_ranges.add(base_interval);
const bool is_accuracy_high =
Settings::values.gpu_accuracy.GetValue() == Settings::GPUAccuracy::High;
const bool is_async = Settings::values.use_asynchronous_gpu_emulation.GetValue();
if (!is_accuracy_high || !is_async) {
if (!is_async && !is_accuracy_high) {
return;
}
if (std::ranges::find(uncommitted_downloads, buffer_id) != uncommitted_downloads.end()) {
// Already inserted
return;
}
uncommitted_downloads.push_back(buffer_id);
uncommitted_ranges.add(base_interval);
}
template <class P>
@ -1103,7 +1191,6 @@ void BufferCache<P>::JoinOverlap(BufferId new_buffer_id, BufferId overlap_id,
if (!copies.empty()) {
runtime.CopyBuffer(slot_buffers[new_buffer_id], overlap, copies);
}
ReplaceBufferDownloads(overlap_id, new_buffer_id);
DeleteBuffer(overlap_id);
}
@ -1244,14 +1331,51 @@ void BufferCache<P>::DownloadBufferMemory(Buffer& buffer, VAddr cpu_addr, u64 si
boost::container::small_vector<BufferCopy, 1> copies;
u64 total_size_bytes = 0;
u64 largest_copy = 0;
buffer.ForEachDownloadRange(cpu_addr, size, [&](u64 range_offset, u64 range_size) {
copies.push_back(BufferCopy{
.src_offset = range_offset,
.dst_offset = total_size_bytes,
.size = range_size,
});
total_size_bytes += range_size;
largest_copy = std::max(largest_copy, range_size);
buffer.ForEachDownloadRangeAndClear(cpu_addr, size, [&](u64 range_offset, u64 range_size) {
const VAddr buffer_addr = buffer.CpuAddr();
const auto add_download = [&](VAddr start, VAddr end) {
const u64 new_offset = start - buffer_addr;
const u64 new_size = end - start;
copies.push_back(BufferCopy{
.src_offset = new_offset,
.dst_offset = total_size_bytes,
.size = new_size,
});
// Align up to avoid cache conflicts
constexpr u64 align = 256ULL;
constexpr u64 mask = ~(align - 1ULL);
total_size_bytes += (new_size + align - 1) & mask;
largest_copy = std::max(largest_copy, new_size);
};
const VAddr start_address = buffer_addr + range_offset;
const VAddr end_address = start_address + range_size;
const IntervalType search_interval{start_address - range_size, 1};
auto it = common_ranges.lower_bound(search_interval);
if (it == common_ranges.end()) {
it = common_ranges.begin();
}
while (it != common_ranges.end()) {
VAddr inter_addr_end = it->upper();
VAddr inter_addr = it->lower();
if (inter_addr >= end_address) {
break;
}
if (inter_addr_end <= start_address) {
it++;
continue;
}
if (inter_addr_end > end_address) {
inter_addr_end = end_address;
}
if (inter_addr < start_address) {
inter_addr = start_address;
}
add_download(inter_addr, inter_addr_end);
it++;
}
const IntervalType subtract_interval{start_address, end_address};
common_ranges.subtract(subtract_interval);
});
if (total_size_bytes == 0) {
return;
@ -1315,18 +1439,6 @@ void BufferCache<P>::DeleteBuffer(BufferId buffer_id) {
NotifyBufferDeletion();
}
template <class P>
void BufferCache<P>::ReplaceBufferDownloads(BufferId old_buffer_id, BufferId new_buffer_id) {
const auto replace = [old_buffer_id, new_buffer_id](std::vector<BufferId>& buffers) {
std::ranges::replace(buffers, old_buffer_id, new_buffer_id);
if (auto it = std::ranges::find(buffers, new_buffer_id); it != buffers.end()) {
buffers.erase(std::remove(it + 1, buffers.end(), new_buffer_id), buffers.end());
}
};
replace(uncommitted_downloads);
std::ranges::for_each(committed_downloads, replace);
}
template <class P>
void BufferCache<P>::NotifyBufferDeletion() {
if constexpr (HAS_PERSISTENT_UNIFORM_BUFFER_BINDINGS) {
@ -1349,15 +1461,9 @@ typename BufferCache<P>::Binding BufferCache<P>::StorageBufferBinding(GPUVAddr s
if (!cpu_addr || size == 0) {
return NULL_BINDING;
}
// HACK(Rodrigo): This is the number of bytes bound in host beyond the guest API's range.
// It exists due to some games like Astral Chain operate out of bounds.
// Binding the whole map range would be technically correct, but games have large maps that make
// this approach unaffordable for now.
static constexpr u32 arbitrary_extra_bytes = 0xc000;
const u32 bytes_to_map_end = static_cast<u32>(gpu_memory.BytesToMapEnd(gpu_addr));
const Binding binding{
.cpu_addr = *cpu_addr,
.size = std::min(size + arbitrary_extra_bytes, bytes_to_map_end),
.size = size,
.buffer_id = BufferId{},
};
return binding;

10
src/video_core/dma_pusher.cpp
View file

@ -4,6 +4,7 @@
#include "common/cityhash.h"
#include "common/microprofile.h"
#include "common/settings.h"
#include "core/core.h"
#include "core/memory.h"
#include "video_core/dma_pusher.h"
@ -76,8 +77,13 @@ bool DmaPusher::Step() {
// Push buffer non-empty, read a word
command_headers.resize(command_list_header.size);
gpu.MemoryManager().ReadBlockUnsafe(dma_get, command_headers.data(),
command_list_header.size * sizeof(u32));
if (Settings::IsGPULevelHigh()) {
gpu.MemoryManager().ReadBlock(dma_get, command_headers.data(),
command_list_header.size * sizeof(u32));
} else {
gpu.MemoryManager().ReadBlockUnsafe(dma_get, command_headers.data(),
command_list_header.size * sizeof(u32));
}
}
for (std::size_t index = 0; index < command_headers.size();) {
const CommandHeader& command_header = command_headers[index];

7
src/video_core/fence_manager.h
View file

@ -8,6 +8,7 @@
#include <queue>
#include "common/common_types.h"
#include "common/settings.h"
#include "core/core.h"
#include "video_core/delayed_destruction_ring.h"
#include "video_core/gpu.h"
@ -53,6 +54,12 @@ public:
delayed_destruction_ring.Tick();
}
// Unlike other fences, this one doesn't
void SignalOrdering() {
std::scoped_lock lock{buffer_cache.mutex};
buffer_cache.AccumulateFlushes();
}
void SignalSemaphore(GPUVAddr addr, u32 value) {
TryReleasePendingFences();
const bool should_flush = ShouldFlush();

4
src/video_core/gpu.cpp
View file

@ -268,11 +268,13 @@ void GPU::CallPullerMethod(const MethodCall& method_call) {
case BufferMethods::SemaphoreAddressHigh:
case BufferMethods::SemaphoreAddressLow:
case BufferMethods::SemaphoreSequence:
case BufferMethods::RefCnt:
case BufferMethods::UnkCacheFlush:
case BufferMethods::WrcacheFlush:
case BufferMethods::FenceValue:
break;
case BufferMethods::RefCnt:
rasterizer->SignalReference();
break;
case BufferMethods::FenceAction:
ProcessFenceActionMethod();
break;

3
src/video_core/rasterizer_interface.h
View file

@ -63,6 +63,9 @@ public:
/// Signal a GPU based syncpoint as a fence
virtual void SignalSyncPoint(u32 value) = 0;
/// Signal a GPU based reference as point
virtual void SignalReference() = 0;
/// Release all pending fences.
virtual void ReleaseFences() = 0;

8
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -634,6 +634,13 @@ void RasterizerOpenGL::SignalSyncPoint(u32 value) {
fence_manager.SignalSyncPoint(value);
}
void RasterizerOpenGL::SignalReference() {
if (!gpu.IsAsync()) {
return;
}
fence_manager.SignalOrdering();
}
void RasterizerOpenGL::ReleaseFences() {
if (!gpu.IsAsync()) {
return;
@ -650,6 +657,7 @@ void RasterizerOpenGL::FlushAndInvalidateRegion(VAddr addr, u64 size) {
void RasterizerOpenGL::WaitForIdle() {
glMemoryBarrier(GL_ALL_BARRIER_BITS);
SignalReference();
}
void RasterizerOpenGL::FragmentBarrier() {

1
src/video_core/renderer_opengl/gl_rasterizer.h
View file

@ -83,6 +83,7 @@ public:
void ModifyGPUMemory(GPUVAddr addr, u64 size) override;
void SignalSemaphore(GPUVAddr addr, u32 value) override;
void SignalSyncPoint(u32 value) override;
void SignalReference() override;
void ReleaseFences() override;
void FlushAndInvalidateRegion(VAddr addr, u64 size) override;
void WaitForIdle() override;

8
src/video_core/renderer_vulkan/vk_rasterizer.cpp
View file

@ -580,6 +580,13 @@ void RasterizerVulkan::SignalSyncPoint(u32 value) {
fence_manager.SignalSyncPoint(value);
}
void RasterizerVulkan::SignalReference() {
if (!gpu.IsAsync()) {
return;
}
fence_manager.SignalOrdering();
}
void RasterizerVulkan::ReleaseFences() {
if (!gpu.IsAsync()) {
return;
@ -612,6 +619,7 @@ void RasterizerVulkan::WaitForIdle() {
cmdbuf.SetEvent(event, flags);
cmdbuf.WaitEvents(event, flags, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, {}, {}, {});
});
SignalReference();
}
void RasterizerVulkan::FragmentBarrier() {

1
src/video_core/renderer_vulkan/vk_rasterizer.h
View file

@ -75,6 +75,7 @@ public:
void ModifyGPUMemory(GPUVAddr addr, u64 size) override;
void SignalSemaphore(GPUVAddr addr, u32 value) override;
void SignalSyncPoint(u32 value) override;
void SignalReference() override;
void ReleaseFences() override;
void FlushAndInvalidateRegion(VAddr addr, u64 size) override;
void WaitForIdle() override;

4
src/video_core/texture_cache/types.h
View file

@ -133,8 +133,8 @@ struct BufferImageCopy {
};
struct BufferCopy {
size_t src_offset;
size_t dst_offset;
u64 src_offset;
u64 dst_offset;
size_t size;
};