message: Add color attachment usage for MSAA targets for discard patterns
  * In most cases we expect this to already be there, and if not it likely will
  not penalise anything in the driver since MSAA is designed for rendering to.
diff: @@ -2044,6 +2044,7 @@ bool WrappedVulkan::Serialise_vkCreateImage(SerialiserType &ser, VkDevice device
  // pipeline)
  if(GetShaderCache()->IsBuffer2MSSupported())
  CreateInfo.usage |= VK_IMAGE_USAGE_STORAGE_BIT;
  + CreateInfo.usage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
  }
  else
  {
  @@ -2254,6 +2255,7 @@ VkResult WrappedVulkan::vkCreateImage(VkDevice device, const VkImageCreateInfo *
  // its constructor
  if(GetDebugManager() && GetShaderCache()->IsBuffer2MSSupported())
  createInfo_adjusted.usage |= VK_IMAGE_USAGE_STORAGE_BIT;
  + createInfo_adjusted.usage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
  }
  else
  {
  