Performance Question - Custom Primitive Data

Development Programming & Scripting
1

Hello i’m converted from unity, there is a option called MaterialPropertyBlock, it looks like here is the name Custom Primitive Data.

i created a test scene with only:
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DrawTest and DrawTest2 are 2 Cubes, with different colors.

i followed the tutorial here: Storing Custom Data in a Material Per Primitive | Unreal Engine 4.27 Documentation

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image1748×328 157 KB

why are there 4 mesh draw calls? there are 2 meshes, with the same material so the maximum draw calls should be 2?

in my case, i have many meshes, but i’m only need 1 master material for the whole game.
What is the best practise to hold the draw calls to a minimum?

Skeletal meshes, cant combine to 1 draw call right?

Thanks for the help.

2

The drawcall in PIE mode may contain elements from the editor which can be inaccurate. Try place more cubes on the screen and see if the drawcall remain the same.