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buffer_cache: Do basic slow readbacks

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Downloading memory on every page fault is super slow but will suffice to test for now
This commit is contained in:
IndecisiveTurtle 2025-03-23 01:09:32 +02:00
parent 186ba861fc
commit c8d13b684f
3 changed files with 15 additions and 1 deletions
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1
src/video_core/amdgpu/liverpool.cpp
View file

@ -74,6 +74,7 @@ Liverpool::~Liverpool() {
void Liverpool::Process(std::stop_token stoken) { void Liverpool::Process(std::stop_token stoken) {
Common::SetCurrentThreadName("shadPS4:GpuCommandProcessor"); Common::SetCurrentThreadName("shadPS4:GpuCommandProcessor");
gpu_id = std::this_thread::get_id();
while (!stoken.stop_requested()) { while (!stoken.stop_requested()) {
{ {

1
src/video_core/amdgpu/liverpool.h
View file

@ -1502,6 +1502,7 @@ public:
u32 pipe_id; u32 pipe_id;
}; };
Common::SlotVector<AscQueueInfo> asc_queues{}; Common::SlotVector<AscQueueInfo> asc_queues{};
std::thread::id gpu_id;
private: private:
struct Task { struct Task {

14
src/video_core/buffer_cache/buffer_cache.cpp
View file

@ -46,12 +46,24 @@ void BufferCache::InvalidateMemory(VAddr device_addr, u64 size) {
return; return;
} }
if (memory_tracker->IsRegionGpuModified(device_addr, size)) { if (memory_tracker->IsRegionGpuModified(device_addr, size)) {
memory_tracker->UnmarkRegionAsGpuModified(device_addr, size); ReadMemory(device_addr, size);
} }
memory_tracker->MarkRegionAsCpuModified(device_addr, size); memory_tracker->MarkRegionAsCpuModified(device_addr, size);
} }
void BufferCache::ReadMemory(VAddr device_addr, u64 size) { void BufferCache::ReadMemory(VAddr device_addr, u64 size) {
if (std::this_thread::get_id() != liverpool->gpu_id) {
std::binary_semaphore command_wait{0};
liverpool->SendCommand([this, &command_wait, device_addr, size] {
Buffer& buffer = slot_buffers[FindBuffer(device_addr, size)];
DownloadBufferMemory(buffer, device_addr, size);
command_wait.release();
});
command_wait.acquire();
} else {
Buffer& buffer = slot_buffers[FindBuffer(device_addr, size)];
DownloadBufferMemory(buffer, device_addr, size);
}
memory_tracker->UnmarkRegionAsGpuModified(device_addr, size); memory_tracker->UnmarkRegionAsGpuModified(device_addr, size);
} }