message: base: Check for swapchain blit source feature instead of destination
  As I understand it the goal is to use the swapchain image as a transfer
  source (for taking screenshots), not as a transfer destination.
diff: @@ -394,7 +394,7 @@ public:
  // Set additional usage flag for blitting from the swapchain images if supported
  VkFormatProperties formatProps;
  vkGetPhysicalDeviceFormatProperties(physicalDevice, colorFormat, &formatProps);
  - if (formatProps.optimalTilingFeatures & VK_FORMAT_FEATURE_BLIT_DST_BIT) {
  + if (formatProps.optimalTilingFeatures & VK_FORMAT_FEATURE_BLIT_SRC_BIT) {
  swapchainCI.imageUsage |= VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
  }
  