message: Update reftype on rollover from one binding to another
  * When we roll over from one binding to another due to descriptor count being
  larger than a single binding, we need to update the frame reftype since it
  might go from storage to sampled or vice-versa and so change from read-only to
  read-write.
diff: @@ -1111,6 +1111,8 @@ void WrappedVulkan::vkUpdateDescriptorSets(VkDevice device, uint32_t writeCount,
  layoutBinding++;
  binding++;
  curIdx = 0;
  +
  + ref = GetRefType(layoutBinding->descriptorType);
  }
  DescriptorSetSlot &bind = (*binding)[curIdx];
  @@ -1224,6 +1226,8 @@ void WrappedVulkan::vkUpdateDescriptorSets(VkDevice device, uint32_t writeCount,
  dstlayoutBinding++;
  dstbinding++;
  curDstIdx = 0;
  +
  + ref = GetRefType(dstlayoutBinding->descriptorType);
  }
  // dst and src indices must roll-over independently
  @@ -1526,6 +1530,8 @@ void WrappedVulkan::vkUpdateDescriptorSetWithTemplate(
  layoutBinding++;
  binding++;
  curIdx = 0;
  +
  + ref = GetRefType(layoutBinding->descriptorType);
  }
  const byte *src = (const byte *)pData + entry.offset + entry.stride * d;
  