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gl_buffer_cache: Enable async downloads

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This commit is contained in:
Ameer J 2023-08-13 21:39:50 -04:00
parent 48b87d64de
commit 9b112107e2
4 changed files with 34 additions and 9 deletions
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8
src/video_core/renderer_opengl/gl_buffer_cache.cpp
View file

@ -146,8 +146,12 @@ StagingBufferMap BufferCacheRuntime::UploadStagingBuffer(size_t size) {
return staging_buffer_pool.RequestUploadBuffer(size);
}
StagingBufferMap BufferCacheRuntime::DownloadStagingBuffer(size_t size) {
return staging_buffer_pool.RequestDownloadBuffer(size);
StagingBufferMap BufferCacheRuntime::DownloadStagingBuffer(size_t size, bool deferred) {
return staging_buffer_pool.RequestDownloadBuffer(size, deferred);
}
void BufferCacheRuntime::FreeDeferredStagingBuffer(StagingBufferMap& buffer) {
staging_buffer_pool.FreeDeferredStagingBuffer(buffer.index);
}
u64 BufferCacheRuntime::GetDeviceMemoryUsage() const {

6
src/video_core/renderer_opengl/gl_buffer_cache.h
View file

@ -64,7 +64,9 @@ public:
[[nodiscard]] StagingBufferMap UploadStagingBuffer(size_t size);
[[nodiscard]] StagingBufferMap DownloadStagingBuffer(size_t size);
[[nodiscard]] StagingBufferMap DownloadStagingBuffer(size_t size, bool deferred = false);
void FreeDeferredStagingBuffer(StagingBufferMap& buffer);
void CopyBuffer(GLuint dst_buffer, GLuint src_buffer,
std::span<const VideoCommon::BufferCopy> copies, bool barrier = true);
@ -233,7 +235,7 @@ struct BufferCacheParams {
static constexpr bool NEEDS_BIND_STORAGE_INDEX = true;
static constexpr bool USE_MEMORY_MAPS = true;
static constexpr bool SEPARATE_IMAGE_BUFFER_BINDINGS = true;
static constexpr bool IMPLEMENTS_ASYNC_DOWNLOADS = false;
static constexpr bool IMPLEMENTS_ASYNC_DOWNLOADS = true;
// TODO: Investigate why OpenGL seems to perform worse with persistently mapped buffer uploads
static constexpr bool USE_MEMORY_MAPS_FOR_UPLOADS = false;

20
src/video_core/renderer_opengl/gl_staging_buffer_pool.cpp
View file

@ -28,19 +28,26 @@ StagingBuffers::StagingBuffers(GLenum storage_flags_, GLenum map_flags_)
StagingBuffers::~StagingBuffers() = default;
StagingBufferMap StagingBuffers::RequestMap(size_t requested_size, bool insert_fence) {
StagingBufferMap StagingBuffers::RequestMap(size_t requested_size, bool insert_fence,
bool deferred) {
MICROPROFILE_SCOPE(OpenGL_BufferRequest);
const size_t index = RequestBuffer(requested_size);
OGLSync* const sync = insert_fence ? &allocs[index].sync : nullptr;
allocs[index].sync_index = insert_fence ? ++current_sync_index : 0;
allocs[index].deferred = deferred;
return StagingBufferMap{
.mapped_span = std::span(allocs[index].map, requested_size),
.sync = sync,
.buffer = allocs[index].buffer.handle,
.index = index,
};
}
void StagingBuffers::FreeDeferredStagingBuffer(size_t index) {
allocs[index].deferred = false;
}
size_t StagingBuffers::RequestBuffer(size_t requested_size) {
if (const std::optional<size_t> index = FindBuffer(requested_size); index) {
return *index;
@ -68,6 +75,9 @@ std::optional<size_t> StagingBuffers::FindBuffer(size_t requested_size) {
if (buffer_size < requested_size || buffer_size >= smallest_buffer) {
continue;
}
if (alloc.deferred) {
continue;
}
if (alloc.sync.handle != 0) {
if (alloc.sync_index >= known_unsignaled_index) {
// This fence is later than a fence that is known to not be signaled
@ -138,8 +148,12 @@ StagingBufferMap StagingBufferPool::RequestUploadBuffer(size_t size) {
return upload_buffers.RequestMap(size, true);
}
StagingBufferMap StagingBufferPool::RequestDownloadBuffer(size_t size) {
return download_buffers.RequestMap(size, false);
StagingBufferMap StagingBufferPool::RequestDownloadBuffer(size_t size, bool deferred) {
return download_buffers.RequestMap(size, false, deferred);
}
void StagingBufferPool::FreeDeferredStagingBuffer(size_t index) {
download_buffers.FreeDeferredStagingBuffer(index);
}
} // namespace OpenGL

9
src/video_core/renderer_opengl/gl_staging_buffer_pool.h
View file

@ -26,13 +26,16 @@ struct StagingBufferMap {
size_t offset = 0;
OGLSync* sync;
GLuint buffer;
size_t index;
};
struct StagingBuffers {
explicit StagingBuffers(GLenum storage_flags_, GLenum map_flags_);
~StagingBuffers();
StagingBufferMap RequestMap(size_t requested_size, bool insert_fence);
StagingBufferMap RequestMap(size_t requested_size, bool insert_fence, bool deferred = false);
void FreeDeferredStagingBuffer(size_t index);
size_t RequestBuffer(size_t requested_size);
@ -44,6 +47,7 @@ struct StagingBuffers {
u8* map;
size_t size;
size_t sync_index;
bool deferred;
};
std::vector<StagingBufferAlloc> allocs;
GLenum storage_flags;
@ -88,7 +92,8 @@ public:
~StagingBufferPool() = default;
StagingBufferMap RequestUploadBuffer(size_t size);
StagingBufferMap RequestDownloadBuffer(size_t size);
StagingBufferMap RequestDownloadBuffer(size_t size, bool deferred = false);
void FreeDeferredStagingBuffer(size_t index);
private:
StagingBuffers upload_buffers{GL_MAP_WRITE_BIT, GL_MAP_WRITE_BIT | GL_MAP_FLUSH_EXPLICIT_BIT};