Grow descriptor pools by 1.5

src/gpu/vk/GrVkPipelineState.cpp

 /*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "GrVkPipelineState.h"
 
 #include "GrPipeline.h"
@@ skipping 380 matching lines @@
     for (int i = 0; i < fTextures.count(); ++i) {
         commandBuffer.addResource(fTextures[i]);
     }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 void GrVkPipelineState::DescriptorPoolManager::getNewPool(GrVkGpu* gpu) {
     if (fPool) {
         fPool->unref(gpu);
-        if (fMaxDescriptors < kMaxDescLimit >> 1) {
-            fMaxDescriptors = fMaxDescriptors << 1;
+        uint32_t newPoolSize = fMaxDescriptors + ((fMaxDescriptors + 1) >> 1);
+        if (newPoolSize < kMaxDescLimit) {
+            fMaxDescriptors = newPoolSize;
         } else {
             fMaxDescriptors = kMaxDescLimit;
         }
 
     }
     if (fMaxDescriptors) {
         fPool = gpu->resourceProvider().findOrCreateCompatibleDescriptorPool(fDescType,
                                                                              fMaxDescriptors);
     }
     SkASSERT(fPool || !fMaxDescriptors);
@@ skipping 78 matching lines @@
 
     b.add32(get_blend_info_key(pipeline));
 
     b.add32(primitiveType);
 
     // Set key length
     int keyLength = key->count();
     SkASSERT(0 == (keyLength % 4));
     *reinterpret_cast<uint32_t*>(key->begin()) = SkToU32(keyLength);
 }