Fix vulkan dual source blending

src/gpu/vk/GrVkCaps.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 "GrVkCaps.h"
 
 #include "GrVkUtil.h"
@@ skipping 109 matching lines @@
     fMapBufferFlags = kCanMap_MapFlag | kSubset_MapFlag;
 
     fStencilWrapOpsSupport = true;
     fOversizedStencilSupport = true;
     fSampleShadingSupport = SkToBool(featureFlags & kSampleRateShading_GrVkFeatureFlag);
 }
 
 void GrVkCaps::initGLSLCaps(const VkPhysicalDeviceProperties& properties,
                             uint32_t featureFlags) {
     GrGLSLCaps* glslCaps = static_cast<GrGLSLCaps*>(fShaderCaps.get());
-    glslCaps->fVersionDeclString = "#version 310 es\n";
+    glslCaps->fVersionDeclString = "#version 330\n";
+
 
     // fConfigOutputSwizzle will default to RGBA so we only need to set it for alpha only config.
     for (int i = 0; i < kGrPixelConfigCnt; ++i) {
         GrPixelConfig config = static_cast<GrPixelConfig>(i);
         if (GrPixelConfigIsAlphaOnly(config)) {
             glslCaps->fConfigTextureSwizzle[i] = GrSwizzle::RRRR();
             glslCaps->fConfigOutputSwizzle[i] = GrSwizzle::AAAA();
         } else {
             glslCaps->fConfigTextureSwizzle[i] = GrSwizzle::RGBA();
         }
@@ skipping 80 matching lines @@
 
 void GrVkCaps::ConfigInfo::init(const GrVkInterface* interface,
                                 VkPhysicalDevice physDev,
                                 VkFormat format) {
     VkFormatProperties props;
     memset(&props, 0, sizeof(VkFormatProperties));
     GR_VK_CALL(interface, GetPhysicalDeviceFormatProperties(physDev, format, &props));
     InitConfigFlags(props.linearTilingFeatures, &fLinearFlags);
     InitConfigFlags(props.optimalTilingFeatures, &fOptimalFlags);
 }