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How the HELL do I render something to the screen directly (e.g. drawing pixels, lines, and stuff a la OpenGL) in Forge 1.21.1?

NormalExisting
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The official documentation says next to nothing and I have had no success finding reference snippets (e.g. minimap mods and other stuff that involves directly drawing to the screen). Google searches and GPT outputs reference deprecated and/or removed content from older versions. Legends speak of a layered rendering system that also has next to no documentation. Any help is appreciated. Even drawing just a single pixel is enough.

Edited by NormalExisting

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