message: Fix viewport overlay when using -ve viewport height on KHR_maintenance1
diff: @@ -972,8 +972,14 @@ ResourceId VulkanReplay::RenderOverlay(ResourceId texid, CompType typeHint, Floa
  if(m_pDriver->m_ExtensionsEnabled[VkCheckExt_AMD_neg_viewport] ||
  m_pDriver->m_ExtensionsEnabled[VkCheckExt_KHR_maintenance1])
  + {
  ubo->RectSize.y = fabs(viewport.height);
  + // VK_KHR_maintenance1 requires the position to be adjusted as well
  + if(m_pDriver->m_ExtensionsEnabled[VkCheckExt_KHR_maintenance1] && viewport.height < 0.0f)
  + ubo->RectPosition.y += viewport.height;
  + }
  +
  m_Overlay.m_CheckerUBO.Unmap();
  vt->CmdBindPipeline(Unwrap(cmd), VK_PIPELINE_BIND_POINT_GRAPHICS,
  