doc/python_api/examples/bpy.types.HydraRenderEngine.py

@@ -7,6 +7,7 @@ USD Hydra Based Renderer
 
 import bpy
 
+
 class CustomHydraRenderEngine(bpy.types.HydraRenderEngine):
     # Identifier and name in the user interface.
     bl_idname = "CUSTOM_HYDRA_RENDERER"
@@ -53,8 +54,10 @@ class CustomHydraRenderEngine(bpy.types.HydraRenderEngine):
 def register():
     bpy.utils.register_class(CustomHydraRenderEngine)
 
+
 def unregister():
     bpy.utils.unregister_class(CustomHydraRenderEngine)
 
+
 if __name__ == "__main__":
     register()

scripts/modules/bpy_hydra.py

@@ -4,6 +4,7 @@ __all__ = (
     "export_mtlx",
 )
 
+
 def export_mtlx(material):
     """ Exports material to .mtlx file. It is called from Blender source code. """
     try:

source/blender/render/hydra/engine.cc

@@ -55,11 +55,7 @@ Engine::Engine(RenderEngine *bl_engine, const std::string &render_delegate_name)
   free_camera_delegate_ = std::make_unique<pxr::HdxFreeCameraSceneDelegate>(
       render_index_.get(), pxr::SdfPath::AbsoluteRootPath().AppendElementString("freeCamera"));
 
-#ifdef __APPLE__
-  render_task_delegate_ = std::make_unique<RenderTaskDelegate>(
-      render_index_.get(), pxr::SdfPath::AbsoluteRootPath().AppendElementString("renderTask"));
-#else
-  if (bl_engine->type->flag & RE_USE_GPU_CONTEXT) {
+  if (bl_engine->type->flag & RE_USE_GPU_CONTEXT && GPU_backend_get_type() == GPU_BACKEND_OPENGL) {
     render_task_delegate_ = std::make_unique<GPURenderTaskDelegate>(
         render_index_.get(), pxr::SdfPath::AbsoluteRootPath().AppendElementString("renderTask"));
   }
@@ -67,7 +63,6 @@ Engine::Engine(RenderEngine *bl_engine, const std::string &render_delegate_name)
     render_task_delegate_ = std::make_unique<RenderTaskDelegate>(
         render_index_.get(), pxr::SdfPath::AbsoluteRootPath().AppendElementString("renderTask"));
   }
-#endif
   render_task_delegate_->set_camera(free_camera_delegate_->GetCameraId());
 
   if (render_delegate_name_ == "HdStormRendererPlugin") {