Hi
There are a few examples of different ways to generate block models in this tutorial project:
https://github.com/TheGreyGhost/MinecraftByExample
see mbe03, mbe04, mbe05.
But it mostly comes down to what you mean by "glow". For example - the lamp block glows. Do you mean some sort of animated "halo"? Do you have a "concept" art that shows what effect you're trying to achieve, or something else in minecraft that is similar?
-TGG
Howdy
In 1.15.2 you should use RenderBuffers, not direct GL11 calls, and use the MatrixStack.
Check out this post
https://gist.github.com/williewillus/30d7e3f775fe93c503bddf054ef3f93e
And also this working example
https://github.com/Vazkii/Botania/blob/master/src/main/java/vazkii/botania/client/core/handler/BlockHighlightRenderHandler.java
-TGG