Buffer Cache: Tune to the levels of the new GC.

src/video_core/renderer_vulkan/vk_buffer_cache.cpp

@@ -141,6 +141,18 @@ StagingBufferRef BufferCacheRuntime::DownloadStagingBuffer(size_t size) {
     return staging_pool.Request(size, MemoryUsage::Download);
 }
 
+u64 BufferCacheRuntime::GetDeviceLocalMemory() const {
+    return device.GetDeviceLocalMemory();
+}
+
+u64 BufferCacheRuntime::GetDeviceMemoryUsage() const {
+    return device.GetDeviceMemoryUsage();
+}
+
+bool BufferCacheRuntime::CanReportMemoryUsage() const {
+    return device.CanReportMemoryUsage();
+}
+
 void BufferCacheRuntime::Finish() {
     scheduler.Finish();
 }

src/video_core/renderer_vulkan/vk_buffer_cache.h

@@ -65,6 +65,12 @@ public:
 
     void Finish();
 
+    u64 GetDeviceLocalMemory() const;
+
+    u64 GetDeviceMemoryUsage() const;
+
+    bool CanReportMemoryUsage() const;
+
     [[nodiscard]] StagingBufferRef UploadStagingBuffer(size_t size);
 
     [[nodiscard]] StagingBufferRef DownloadStagingBuffer(size_t size);