message: Handle vulkan physical devices that don't have LINE polygon mode
diff: @@ -291,6 +291,20 @@ MeshDisplayPipelines VulkanDebugManager::CacheMeshDisplayPipelines(VkPipelineLay
  rs.lineWidth = 1.0f;
  ds.depthTestEnable = false;
  + // to be friendlier to implementations that don't support LINE polygon mode, when the topology is
  + // already lines, we can just use fill. This is most commonly used for the helpers
  + if(primary.topology == Topology::LineList)
  + rs.polygonMode = VK_POLYGON_MODE_FILL;
  +
  + // if the device doesn't support non-solid fill mode, fall back to fill. We don't try to patch
  + // index buffers for mesh render since it's not worth the trouble - mesh rendering happens locally
  + // and typically the local machine is capable enough to do line raster.
  + if(!m_pDriver->GetDeviceFeatures().fillModeNonSolid)
  + {
  + RDCWARN("Can't render mesh wireframes without non-solid fill mode support");
  + rs.polygonMode = VK_POLYGON_MODE_FILL;
  + }
  +
  vkr = vt->CreateGraphicsPipelines(Unwrap(m_Device), VK_NULL_HANDLE, 1, &pipeInfo, NULL,
  &cache.pipes[MeshDisplayPipelines::ePipe_Wire]);
  RDCASSERTEQUAL(vkr, VK_SUCCESS);
  