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Merge pull request #2152 from ReinUsesLisp/vk-stream-buffer

vk_stream_buffer: Implement a stream buffer
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bunnei 2019-02-27 21:19:15 -05:00 committed by GitHub
commit 1b13859af8
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5 changed files with 172 additions and 8 deletions

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@ -111,7 +111,9 @@ if (ENABLE_VULKAN)
renderer_vulkan/vk_resource_manager.cpp
renderer_vulkan/vk_resource_manager.h
renderer_vulkan/vk_scheduler.cpp
renderer_vulkan/vk_scheduler.h)
renderer_vulkan/vk_scheduler.h
renderer_vulkan/vk_stream_buffer.cpp
renderer_vulkan/vk_stream_buffer.h)
target_include_directories(video_core PRIVATE ../../externals/Vulkan-Headers/include)
target_compile_definitions(video_core PRIVATE HAS_VULKAN)

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@ -125,11 +125,12 @@ void VKFence::Protect(VKResource* resource) {
protected_resources.push_back(resource);
}
void VKFence::Unprotect(const VKResource* resource) {
void VKFence::Unprotect(VKResource* resource) {
const auto it = std::find(protected_resources.begin(), protected_resources.end(), resource);
if (it != protected_resources.end()) {
protected_resources.erase(it);
}
ASSERT(it != protected_resources.end());
resource->OnFenceRemoval(this);
protected_resources.erase(it);
}
VKFenceWatch::VKFenceWatch() = default;
@ -141,12 +142,11 @@ VKFenceWatch::~VKFenceWatch() {
}
void VKFenceWatch::Wait() {
if (!fence) {
if (fence == nullptr) {
return;
}
fence->Wait();
fence->Unprotect(this);
fence = nullptr;
}
void VKFenceWatch::Watch(VKFence& new_fence) {

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@ -63,7 +63,7 @@ public:
void Protect(VKResource* resource);
/// Removes protection for a resource.
void Unprotect(const VKResource* resource);
void Unprotect(VKResource* resource);
/// Retreives the fence.
operator vk::Fence() const {

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@ -0,0 +1,90 @@
// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <memory>
#include <optional>
#include <vector>
#include "common/assert.h"
#include "video_core/renderer_vulkan/declarations.h"
#include "video_core/renderer_vulkan/vk_device.h"
#include "video_core/renderer_vulkan/vk_memory_manager.h"
#include "video_core/renderer_vulkan/vk_resource_manager.h"
#include "video_core/renderer_vulkan/vk_scheduler.h"
#include "video_core/renderer_vulkan/vk_stream_buffer.h"
namespace Vulkan {
constexpr u64 WATCHES_INITIAL_RESERVE = 0x4000;
constexpr u64 WATCHES_RESERVE_CHUNK = 0x1000;
VKStreamBuffer::VKStreamBuffer(const VKDevice& device, VKMemoryManager& memory_manager,
VKScheduler& scheduler, u64 size, vk::BufferUsageFlags usage,
vk::AccessFlags access, vk::PipelineStageFlags pipeline_stage)
: device{device}, scheduler{scheduler}, buffer_size{size}, access{access}, pipeline_stage{
pipeline_stage} {
CreateBuffers(memory_manager, usage);
ReserveWatches(WATCHES_INITIAL_RESERVE);
}
VKStreamBuffer::~VKStreamBuffer() = default;
std::tuple<u8*, u64, bool> VKStreamBuffer::Reserve(u64 size) {
ASSERT(size <= buffer_size);
mapped_size = size;
if (offset + size > buffer_size) {
// The buffer would overflow, save the amount of used buffers, signal an invalidation and
// reset the state.
invalidation_mark = used_watches;
used_watches = 0;
offset = 0;
}
return {mapped_pointer + offset, offset, invalidation_mark.has_value()};
}
VKExecutionContext VKStreamBuffer::Send(VKExecutionContext exctx, u64 size) {
ASSERT_MSG(size <= mapped_size, "Reserved size is too small");
if (invalidation_mark) {
// TODO(Rodrigo): Find a better way to invalidate than waiting for all watches to finish.
exctx = scheduler.Flush();
std::for_each(watches.begin(), watches.begin() + *invalidation_mark,
[&](auto& resource) { resource->Wait(); });
invalidation_mark = std::nullopt;
}
if (used_watches + 1 >= watches.size()) {
// Ensure that there are enough watches.
ReserveWatches(WATCHES_RESERVE_CHUNK);
}
// Add a watch for this allocation.
watches[used_watches++]->Watch(exctx.GetFence());
offset += size;
return exctx;
}
void VKStreamBuffer::CreateBuffers(VKMemoryManager& memory_manager, vk::BufferUsageFlags usage) {
const vk::BufferCreateInfo buffer_ci({}, buffer_size, usage, vk::SharingMode::eExclusive, 0,
nullptr);
const auto dev = device.GetLogical();
const auto& dld = device.GetDispatchLoader();
buffer = dev.createBufferUnique(buffer_ci, nullptr, dld);
commit = memory_manager.Commit(*buffer, true);
mapped_pointer = commit->GetData();
}
void VKStreamBuffer::ReserveWatches(std::size_t grow_size) {
const std::size_t previous_size = watches.size();
watches.resize(previous_size + grow_size);
std::generate(watches.begin() + previous_size, watches.end(),
[]() { return std::make_unique<VKFenceWatch>(); });
}
} // namespace Vulkan

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@ -0,0 +1,72 @@
// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <optional>
#include <tuple>
#include <vector>
#include "common/common_types.h"
#include "video_core/renderer_vulkan/declarations.h"
#include "video_core/renderer_vulkan/vk_memory_manager.h"
namespace Vulkan {
class VKDevice;
class VKFence;
class VKFenceWatch;
class VKResourceManager;
class VKScheduler;
class VKStreamBuffer {
public:
explicit VKStreamBuffer(const VKDevice& device, VKMemoryManager& memory_manager,
VKScheduler& scheduler, u64 size, vk::BufferUsageFlags usage,
vk::AccessFlags access, vk::PipelineStageFlags pipeline_stage);
~VKStreamBuffer();
/**
* Reserves a region of memory from the stream buffer.
* @param size Size to reserve.
* @returns A tuple in the following order: Raw memory pointer (with offset added), buffer
* offset and a boolean that's true when buffer has been invalidated.
*/
std::tuple<u8*, u64, bool> Reserve(u64 size);
/// Ensures that "size" bytes of memory are available to the GPU, potentially recording a copy.
[[nodiscard]] VKExecutionContext Send(VKExecutionContext exctx, u64 size);
vk::Buffer GetBuffer() const {
return *buffer;
}
private:
/// Creates Vulkan buffer handles committing the required the required memory.
void CreateBuffers(VKMemoryManager& memory_manager, vk::BufferUsageFlags usage);
/// Increases the amount of watches available.
void ReserveWatches(std::size_t grow_size);
const VKDevice& device; ///< Vulkan device manager.
VKScheduler& scheduler; ///< Command scheduler.
const u64 buffer_size; ///< Total size of the stream buffer.
const vk::AccessFlags access; ///< Access usage of this stream buffer.
const vk::PipelineStageFlags pipeline_stage; ///< Pipeline usage of this stream buffer.
UniqueBuffer buffer; ///< Mapped buffer.
VKMemoryCommit commit; ///< Memory commit.
u8* mapped_pointer{}; ///< Pointer to the host visible commit
u64 offset{}; ///< Buffer iterator.
u64 mapped_size{}; ///< Size reserved for the current copy.
std::vector<std::unique_ptr<VKFenceWatch>> watches; ///< Total watches
std::size_t used_watches{}; ///< Count of watches, reset on invalidation.
std::optional<std::size_t>
invalidation_mark{}; ///< Number of watches used in the current invalidation.
};
} // namespace Vulkan