[1.18.2] How to use RenderTypes other than lines()

[SoLegendary]

I have an existing function which draws a outline over an AABB (usually to highlight mobs or blocks):
 

    public static void drawLineBox(PoseStack matrixStack, AABB aabb, float r, float g, float b, float a) {
        Entity camEntity = MC.getCameraEntity();
        double d0 = camEntity.getX();
        double d1 = camEntity.getY() + camEntity.getEyeHeight();
        double d2 = camEntity.getZ();

        RenderSystem.depthMask(false); // disable showing lines through blocks
        VertexConsumer vertexConsumer = MC.renderBuffers().bufferSource().getBuffer(RenderType.lines());

        matrixStack.pushPose();
        matrixStack.translate(-d0, -d1, -d2); // because we start at 0,0,0 relative to camera
        LevelRenderer.renderLineBox(matrixStack, vertexConsumer, aabb, r, g, b, a);
        matrixStack.popPose();
    }

 

I want to adapt this code to draw solid overlays instead of just outlines. See this mockup as an example of what I mean:

 

I've noticed that RenderType.lines() can actually be swapped out for a variety of other types, including notably .solid() and .translucent() which sound like the things that I want.

However, when I replace .lines() in my above code with any other RenderType I get this error:

java.lang.IllegalStateException: Not filled all elements of the vertex
	at TRANSFORMER/[email protected]/com.mojang.blaze3d.vertex.BufferBuilder.endVertex(BufferBuilder.java:249)
	at TRANSFORMER/[email protected]/net.minecraft.client.renderer.LevelRenderer.renderLineBox(LevelRenderer.java:2313)
	at TRANSFORMER/[email protected]/net.minecraft.client.renderer.LevelRenderer.renderLineBox(LevelRenderer.java:2297)
	at TRANSFORMER/[email protected]/com.solegendary.reignofnether.util.MyRenderer.drawLineBox(MyRenderer.java:59)

Is there a guide anywhere for how to properly use these RenderTypes?

I am also interested in how all of the others are used too as it could be a useful tool in the future.

[Draco18s]

Things-that-are-not-lines require more than 2 vertices.

[SoLegendary]

Ok so if I understand correctly, a vertex is created using this line:

vertexConsumer.vertex(matrix4f, x, y, z).color(r, g, b, a).normal(matrix3f, x, y, z).endVertex();

And for a square in my case I just copy with the appropriate coords 4 times.

While I see that the .vertex() takes in-world coordinates, the .normal() seems to be just 1, 0 or -1. How does that work?

In fact, while we're at it - is there any tutorial or docs you can provide that explain how all of the vertexConsumer functions are used? (namely uv, uv2, overlayCoords and normal)

[Draco18s]

Normals only have two possible directions and can generally be determined by the order in which the vertices are specified.
https://en.wikipedia.org/wiki/Normal_(geometry)

 

Minecraft's code is all a convenience wrapper around standard LWJGL calls, which is itself a Java wrapper around raw OpenGL instructions. UV coordinates are for textures.

[SoLegendary]

I managed to get the box drawn, but no matter how I change the colour() params, it seems to always be a black box...

https://pastebin.com/BSjw2Ch1

Edited June 19, 2022 by SoLegendary
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