Use VkPipelineCaches during VkPipeline creation

src/gpu/vk/GrVkGpu.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrVkGpu.h"
 
 #include "GrContextOptions.h"
@@ skipping 162 matching lines @@
     , fQueue(queue)
     , fCmdPool(cmdPool)
     , fResourceProvider(this)
     , fVkInstance(inst) {
     fInterface.reset(GrVkCreateInterface(fVkInstance));
     fCompiler = shaderc_compiler_initialize();
 
     fVkCaps.reset(new GrVkCaps(options, fInterface, physDev));
     fCaps.reset(SkRef(fVkCaps.get()));
 
+    fResourceProvider.init();
+
     fCurrentCmdBuffer = fResourceProvider.createCommandBuffer();
     SkASSERT(fCurrentCmdBuffer);
     fCurrentCmdBuffer->begin(this);
     VK_CALL(GetPhysicalDeviceMemoryProperties(physDev, &fPhysDevMemProps));
 
 }
 
 GrVkGpu::~GrVkGpu() {
     shaderc_compiler_release(fCompiler);
     fCurrentCmdBuffer->end(this);
@@ skipping 67 matching lines @@
 bool GrVkGpu::onWritePixels(GrSurface* surface,
                             int left, int top, int width, int height,
                             GrPixelConfig config,
                             const SkTArray<GrMipLevel>& texels) {
     GrVkTexture* vkTex = static_cast<GrVkTexture*>(surface->asTexture());
     if (!vkTex) {
         return false;
     }
 
     // TODO: We're ignoring MIP levels here.
+    if (texels.empty() || !texels.begin()->fPixels) {
+        return false;
+    }
 
     // We assume Vulkan doesn't do sRGB <-> linear conversions when reading and writing pixels.
     if (GrPixelConfigIsSRGB(surface->config()) != GrPixelConfigIsSRGB(config)) {
         return false;
     }
 
     bool success = false;
     if (GrPixelConfigIsCompressed(vkTex->desc().fConfig)) {
         // We check that config == desc.fConfig in GrGpu::getWritePixelsInfo()
         SkASSERT(config == vkTex->desc().fConfig);
@@ skipping 250 matching lines @@
 #endif
     } else {
         tex = GrVkTexture::CreateNewTexture(this, desc, lifeCycle, imageDesc);
     }
 
     if (!tex) {
         return nullptr;
     }
 
     // TODO: We're ignoring MIP levels here.
-    if (!texels.empty()) {
+    if (!texels.empty() && texels.begin()->fPixels) {
         if (!this->uploadTexData(tex, 0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
                                  texels.begin()->fPixels, texels.begin()->fRowBytes)) {
             tex->unref();
             return nullptr;
         }
     }
 
     return tex;
 }
 
@@ skipping 854 matching lines @@
     int set_a_break_pt_here = 9;
     aglSwapBuffers(aglGetCurrentContext());
 #elif defined(SK_BUILD_FOR_WIN32)
     SwapBuf();
     int set_a_break_pt_here = 9;
     SwapBuf();
 #endif
 #endif
 }