Vulkan on Fuchsia performance tuning (#3822)

* increase Vulkan GrContext resource cache limits to match android

* [content handler] tune VulkanSurfaceProducer allocation and recycling heuristics

content_handler/vulkan_rasterizer.cc

@@ -406,6 +406,9 @@ bool VulkanRasterizer::VulkanSurfaceProducer::Initialize() {
       kVulkan_GrBackend,
       reinterpret_cast<GrBackendContext>(backend_context_.get())));
 
+  context_->setResourceCacheLimits(vulkan::kGrCacheMaxCount,
+                                   vulkan::kGrCacheMaxByteSize);
+
   FTL_DLOG(INFO) << "Successfully initialized VulkanRasterizer";
   return true;
 }

content_handler/vulkan_rasterizer.h

@@ -87,8 +87,8 @@ class VulkanRasterizer : public Rasterizer {
     struct Swapchain {
       std::queue<std::unique_ptr<Surface>> queue;
       uint32_t tick_count = 0;
-      static constexpr uint32_t kMaxSurfaces = 3;
-      static constexpr uint32_t kMaxTickBeforeDiscard = 3;
+      static constexpr uint32_t kMaxSurfaces = 16;
+      static constexpr uint32_t kMaxTickBeforeDiscard = 600;
     };
 
     using size_key_t = uint64_t;

vulkan/vulkan_application.h

@@ -14,6 +14,9 @@
 
 namespace vulkan {
 
+static const int kGrCacheMaxCount = 8192;
+static const size_t kGrCacheMaxByteSize = 512 * (1 << 20);
+
 class VulkanDevice;
 class VulkanProcTable;
 

vulkan/vulkan_window.cc

@@ -111,6 +111,8 @@ bool VulkanWindow::CreateSkiaGrContext() {
     return false;
   }
 
+  context->setResourceCacheLimits(kGrCacheMaxCount, kGrCacheMaxByteSize);
+
   skia_vk_backend_context_ = backend_context;
   skia_gr_context_ = context;