Grow descriptor pools by 1.5

src/gpu/vk/GrVkResourceProvider.cpp

Index: src/gpu/vk/GrVkResourceProvider.cpp
diff --git a/src/gpu/vk/GrVkResourceProvider.cpp b/src/gpu/vk/GrVkResourceProvider.cpp
index 4f6c7927c752b58ebd4c6d89de36d76230cc3e3e..81dcf586b76beff09f9837cc4c8b8438d9b5399a 100644
--- a/src/gpu/vk/GrVkResourceProvider.cpp
+++ b/src/gpu/vk/GrVkResourceProvider.cpp
@@ -196,8 +196,9 @@ void GrVkResourceProvider::getUniformDescriptorSet(VkDescriptorSet* ds,
     fCurrentUniformDescCount += kNumUniformDescPerSet;
     if (fCurrentUniformDescCount > fCurrMaxUniDescriptors) {
         fUniformDescPool->unref(fGpu);
-        if (fCurrMaxUniDescriptors < kMaxUniformDescriptors >> 1) {
-            fCurrMaxUniDescriptors = fCurrMaxUniDescriptors << 1;
+        uint32_t newPoolSize = fCurrMaxUniDescriptors + ((fCurrMaxUniDescriptors + 1) >> 1);
+        if (newPoolSize < kMaxUniformDescriptors) {
+            fCurrMaxUniDescriptors = newPoolSize;
         } else {
             fCurrMaxUniDescriptors = kMaxUniformDescriptors;
         }