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Where is glCore in PIXI v5? (pixi.js-legacy)


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I am finally starting the process of upgrading to PIXI v5. I have a few custom renderers written in V4, and made use of glCore.GLShader, glCore.GLBuffer, and glCore.VertexArrayObject quite heavily. In V4, I could import glCore from `pixi.js` and have what I need. In V5, is glCore still packaged with PIXI? If it is, where can I find it? If it is no longer included, does V5 provide similar helper methods or objects to make building custom renderers easier? I am aware of the migration guide: https://github.com/pixijs/pixi.js/wiki/v5-Migration-Guide but it doesn't go very low-level.



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Its gone. 

But we have better things now! https://pixijs.io/examples/#/mesh-and-shaders/triangle-color.js

Now you dont need actual WebGL context to create geometries, bufferes and shaders! Also, custom renderer is needed only for batching. Without batching, just single shader + custom render() method of Mesh or your class that extends mesh is fine!

Extra material: custom batching renderer! https://www.pixiplayground.com/#/edit/~tlXTadqt1qCEvHf~cMQE Oh, i just noticed it doesnt draw red if we switch version to 5.2.0... It might be a bug, we are investigating it.

Also, look through render() renderDefault() and that kind of methods of Graphics/Mesh/SimpleMesh. They show how can you actually use pixijs internals : texture binds, rendertexture binds, shader uniforms, in a new style. Basically, we have our own https://twgljs.org/ inside :)

Edited by ivan.popelyshev
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@ivan.popelyshev Thanks for the answer (and the dump of information!). Do you think this material can get added to the V5 Migration Guide? (https://github.com/pixijs/pixi.js/wiki/v5-Migration-Guide) I'm not too sure how many people worked with glCore before for custom renderers but this is useful information and might help someone down the line :)

Edited by lTyl
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