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Can somebody explain to/help me with transparency when I use custom metal shaders?Simple shader like this:fragment float4 fragmentShader(dataOut vertexShaderIn [[stage_in]]){ // A // return float4(1.0, 1.0, 1.0, 0.2); // B premultiplied alpha return float4(0.2, 0.2, 0.2, 0.2);}Won't cause transparency on my simple plane. I also setnode.renderingOrder = 1so I'm sure plane is rendered when all background is already in place.A) approach doesn't work as well as B) - premultiplied alpha one. What else I need to do or set to achieve semi-transparent plane in the scene? Why is it so complex? OpenGL shareds simply returned vec4(1, 1, 1, 0.1) and all worked...Thanks

Hi, I wonder if anybody of you faced the same. When I build my menu HUD in sksprite scene and use it in overlaySKScene of SceneKitScene, the blend modes seems have some bugs. Alpha is behaving as expected but screen/add blending don't work.. at least to me.. Works well in the editor though, see the picture. I guess it may be problem of contexts. When I use either SceneKit or ARKit, the background is either from camera or my SCeneKitScene.. rendering pipeline doesn't work with the pixels from those different contexts. Wny workaround?