[26.2] ELS renderer abstraction

[XFactHD]

This PR implements the NeoForge end of the ELS renderer abstraction, allowing the ELS to use Blaze3D for rendering after vanilla brought up its window. See the linked FML PR for more details.

This PR needs extensive testing to ensure it works properly on various platforms. The only known issue so far is that the game segfaults during frame flip after the "handover" if vanilla chooses OpenGL and RenderDoc is attached (Nvidia Nsight works fine).

Requires neoforged/FancyModLoader#430
Fixes #3230

[neoforged-pr-publishing]

• Publish PR to GitHub Packages

Last commit published: 7689d98d4f32e1dacedcd7e68674f4a1050daf1b - version: 26.2.0.11-beta-pr-3259-els_backend

PR Publishing

The artifacts published by this PR:

• 📦 net.neoforged:neoforge:26.2.0.11-beta-pr-3259-els_backend
• 📦 net.neoforged:testframework:26.2.0.11-beta-pr-3259-els_backend

Repository Declaration

In order to use the artifacts published by the PR, add the following repository to your buildscript:

repositories {
    maven {
        name = "Maven for PR #3259" // https://github.com/neoforged/NeoForge/pull/3259
        url = uri("https://prmaven.neoforged.net/NeoForge/pr3259")
        content {
            includeModule("net.neoforged", "neoforge")
            includeModule("net.neoforged", "testframework")
        }
    }
}

MDK installation

In order to setup a MDK using the latest PR version, run the following commands in a terminal.
The script works on both *nix and Windows as long as you have the JDK bin folder on the path.
The script will clone the MDK in a folder named NeoForge-pr3259.
On Powershell you will need to remove the -L flag from the curl invocation.

mkdir NeoForge-pr3259
cd NeoForge-pr3259
curl -L https://prmaven.neoforged.net/NeoForge/pr3259/net/neoforged/neoforge/26.2.0.11-beta-pr-3259-els_backend/mdk-pr3259.zip -o mdk.zip
jar xf mdk.zip
rm mdk.zip || del mdk.zip

To test a production environment, you can download the installer from here.