[SOLVED] Tessellator Troubles

hydroflame · August 7, 2013

@pelep, well that or start with a call to draw(), change texture to the one you need, startDrawing(), bunch of addVertexWithUV, draw(), rechange back to vanilla texture, startDrawingQuads() to resetup for vanilla drawing.

yeah, but draw() returns an int which is used by MC afterward. according to the comments, it gets sent to the gpu. and i honestly don't know enough about how to handle gpu/hardware related stuff, so i decided not to mess with it and opted to use icons instead

yeah but if you follow the call hierarchy you realise that this int isn't used anywhere (for some reason)

so my method describe above wont affect anythign in that sens

pelep · August 7, 2013

@pelep, well that or start with a call to draw(), change texture to the one you need, startDrawing(), bunch of addVertexWithUV, draw(), rechange back to vanilla texture, startDrawingQuads() to resetup for vanilla drawing.

yeah, but draw() returns an int which is used by MC afterward. according to the comments, it gets sent to the gpu. and i honestly don't know enough about how to handle gpu/hardware related stuff, so i decided not to mess with it and opted to use icons instead

yeah but if you follow the call hierarchy you realise that this int isn't used anywhere (for some reason)

so my method describe above wont affect anythign in that sens

i did, and it gets added to bytesDrawn in WorldRenderer. but actually, yeah, i just noticed that bytesDrawn doesn't seem to be used anywhere. so i guess that way is fine too. but i'm still sticking to icons just in case

hydroflame · August 7, 2013

@pelep, what would you do if you need to draw more complex models ? ones cant use icons

pelep · August 7, 2013

would there be such a case? lol. if you mean for stuff that need textures larger than 16x16, icons don't seem to be restricted to 16x16 sizes. and using icons is basically the same as what you suggested, except that you don't need to change the texture. but if there are cases where the icons won't work for the ISBRH, then... i dunno. luckily for me, i don't have to think about that since icons work for what i'm doing hahahahha

hydroflame · August 7, 2013

hmm, but i could imagine some case where you wouldnt be able to use Icons.. they're very specific but i can see some

i usually use TESR anyway becasue MOST of my custom blocks have animations anyway

Flenix · August 11, 2013

ok- so can anyone show me an example of a textured, single quad block using ISBRH?

That's all I need to get going but I just can't get it working =/

Flenix · August 14, 2013

been experimenting with different things, to check what is and isn't working. It's literally only the tessellator I can't get to work.

This works, and makes two little floating blocks:

http://pastebin.com/KnqHySpp

This does not work:

http://pastebin.com/uVxj6fpK

Tiny blocks aren't enough! I need to be able to use individual quads, because I want non-square shapes. (where some sides are longer than others)

hydroflame · August 14, 2013

heu .. ok well pastebin is blocked by my network

but little tip n trick, when it says "quads" it mean any combinaison of 4 vertices

so

tess.addVertexWithUV(0, 0, 0, 0, 0)

tess.addVertexWithUV(0, 0, 1, 0, 0)

tess.addVertexWithUV(0, 1, 0, 0, 0)

tess.addVertexWithUV(1, 0, 0, 0, 0)

this is valid and tottally not a quad (i actually have no idea wtf it is though)

Flenix · August 14, 2013

Here's whats on the pastebins:

[spoiler=Working two little blocks]

package co.uk.silvania.roads.block.tess.renderers;

import org.lwjgl.opengl.GL11;

import net.minecraft.block.Block;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.RenderBlocks;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.IBlockAccess;
import cpw.mods.fml.client.registry.ISimpleBlockRenderingHandler;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class ShortRampRenderer implements ISimpleBlockRenderingHandler {

        @Override
        public void renderInventoryBlock(Block block, int metadata, int modelID, RenderBlocks renderer) {
               
        }

    @Override
    @SideOnly(Side.CLIENT)
    public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {
        renderer.setRenderBounds(0.6, 0.4, 0.6, 0.8, 0.6, 0.;
        renderer.renderStandardBlock(block, x, y, z);
       
        renderer.setRenderBounds(0.2, 0.4, 0.2, 0.4, 0.6, 0.4);
        renderer.renderStandardBlock(block, x, y, z);
        return true;
    }

        @Override
        public boolean shouldRender3DInInventory() {
                return false;
        }

        @Override
        public int getRenderId() {
                return 0;
        }
}

[spoiler=Not working tessellator]

ackage co.uk.silvania.roads.block.tess.renderers;

import org.lwjgl.opengl.GL11;

import net.minecraft.block.Block;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.RenderBlocks;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.IBlockAccess;
import cpw.mods.fml.client.registry.ISimpleBlockRenderingHandler;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class ShortRampRenderer implements ISimpleBlockRenderingHandler {

        @Override
        public void renderInventoryBlock(Block block, int metadata, int modelID, RenderBlocks renderer) {
               
        }

    @Override
    @SideOnly(Side.CLIENT)
    public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {
                Tessellator tess = Tessellator.instance;
                GL11.glPushMatrix();
                GL11.glTranslated(0, 1, 1);
                tess.addVertexWithUV(0, 1, 1, 0, 0);
                tess.addVertexWithUV(1, 1, 1, 0, 1);
                tess.addVertexWithUV(1, 1, 0, 1, 1);
                tess.addVertexWithUV(0, 1, 0, 1, 0);
               
                tess.addVertexWithUV(0, 0, 1, 0, 0);
                tess.addVertexWithUV(0, 1, 1, 0, 1);
                tess.addVertexWithUV(0, 1, 0, 1, 1);
                tess.addVertexWithUV(0, 0, 0, 1, 0);
                GL11.glPopMatrix();
        return true;
    }

        @Override
        public boolean shouldRender3DInInventory() {
                return false;
        }

        @Override
        public int getRenderId() {
                return 0;
        }
}

Your post didn't make sense though. You said a quad is a combination of 4 vertices, then wrote 4 verticies, and said it's not a quad. Wut

pelep · August 14, 2013

that code you posted makes me think you didn't take a look at the torch code.. anyway, here's an example. just two random faces. hopefully, you'll be able to figure out how to use icons from that as well

    @Override
    public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int rId, RenderBlocks rb)
    {
        Tessellator t = Tessellator.instance;
        Icon icon = Block.pumpkin.getIcon(3, 0);

        double minU = icon.getMinU();
        double maxU = icon.getMaxU();
        double minV = icon.getMinV();
        double maxV = icon.getMaxV();
        double p = 0.0625D;

        //first side
        
        t.setColorOpaque_F(1F, 1F, 1F);
        t.setBrightness(150);
        t.addVertexWithUV(x + (p * 14D), y + 1D, z + 1D, minU, minV);
        t.addVertexWithUV(x + (p * 14D), y + 0D, z + 1D, minU, maxV);
        t.addVertexWithUV(x + (p * 14D), y + 0D, z + 0D, maxU, maxV);
        t.addVertexWithUV(x + (p * 14D), y + 1D, z + 0D, maxU, minV);

        //second side. just messing around a bit here
        
        double u8 = icon.getInterpolatedU(8D);
        
        t.setBrightness(block.getMixedBrightnessForBlock(world, x - 1, y, z));
        t.addVertexWithUV(x - (p * 0D), y + 2D, z + 0D, minU, minV);
        t.addVertexWithUV(x - (p * 0D), y + 0D, z + 0D, minU, maxV);
        t.addVertexWithUV(x - (p * 8D), y + 0D, z + 1D, u8, maxV);
        t.addVertexWithUV(x - (p * 8D), y + 2D, z + 1D, u8, minV);
        
        return true;
    }

hydroflame · August 14, 2013

well actually flenix its normal that your code doesnt work

@Override

@SideOnly(Side.CLIENT)

public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {

Tessellator tess = Tessellator.instance;

GL11.glPushMatrix();

GL11.glTranslated(0, 1, 1);

tess.addVertexWithUV(0, 1, 1, 0, 0);

tess.addVertexWithUV(1, 1, 1, 0, 1);

tess.addVertexWithUV(1, 1, 0, 1, 1);

tess.addVertexWithUV(0, 1, 0, 1, 0);

tess.addVertexWithUV(0, 0, 1, 0, 0);

tess.addVertexWithUV(0, 1, 1, 0, 1);

tess.addVertexWithUV(0, 1, 0, 1, 1);

tess.addVertexWithUV(0, 0, 0, 1, 0);

GL11.glPopMatrix();

return true;

}

the bold line says "move from whatever i was to +0, 1, 1

it should be

GL11.glTranslated(x, y, z);//the coordinates given by the function

pelep · August 14, 2013

Your post didn't make sense though. You said a quad is a combination of 4 vertices, then wrote 4 verticies, and said it's not a quad. Wut

the vertices have to end up aligned. you should be able to make a plane out of the 4 vertices you provided. if they aren't aligned, imagine a plan with one corner pulled away from the rest. something like that happens. what you posted would render something, but definitely not a quad. don't know what it would be either though

pelep · August 14, 2013

well actually flenix its normal that your code doesnt work

@Override

@SideOnly(Side.CLIENT)

public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {

Tessellator tess = Tessellator.instance;

GL11.glPushMatrix();

GL11.glTranslated(0, 1, 1);

tess.addVertexWithUV(0, 1, 1, 0, 0);

tess.addVertexWithUV(1, 1, 1, 0, 1);

tess.addVertexWithUV(1, 1, 0, 1, 1);

tess.addVertexWithUV(0, 1, 0, 1, 0);

tess.addVertexWithUV(0, 0, 1, 0, 0);

tess.addVertexWithUV(0, 1, 1, 0, 1);

tess.addVertexWithUV(0, 1, 0, 1, 1);

tess.addVertexWithUV(0, 0, 0, 1, 0);

GL11.glPopMatrix();

return true;

}

the bold line says "move from whatever i was to +0, 1, 1

it should be

GL11.glTranslated(x, y, z);//the coordinates given by the function

actually, for some reason, that doesn't work with the ISBRH

hydroflame · August 14, 2013

are you kidding me

ok i reaaaally gotta learn exactly whats wrong with ISBRH because it seems like its following absolutelly NO convention in minecraft

Mazetar · August 14, 2013

Your post didn't make sense though. You said a quad is a combination of 4 vertices, then wrote 4 verticies, and said it's not a quad. Wut

the vertices have to end up aligned. you should be able to make a plane out of the 4 vertices you provided. if they aren't aligned, imagine a plan with one corner pulled away from the rest. something like that happens. what you posted would render something, but definitely not a quad. don't know what it would be either though

just wanted to add the wording on Quads from:

http://www.opengl.org/wiki/Primitive#Quads

A quad is a 4 vertex quadrilateral primitive. The four vertices are expected to be coplanar; failure to do so can lead to undefined results.

Mazetar · August 14, 2013

are you kidding me

ok i reaaaally gotta learn exactly whats wrong with ISBRH because it seems like its following absolutelly NO convention in minecraft

Hey man!

You should have known this

Didn't we talk about how GUI's images are displayed just a few days ago

You know there are no convention with minecraft code xP

pelep · August 14, 2013

A quad is a 4 vertex quadrilateral primitive. The four vertices are expected to be coplanar; failure to do so can lead to undefined results.

coplanar! that's the word i was looking for. can't believe i already said the word "plane" and didn't think of it *facepalm* lol.

@hydroflame i kid you not. if you look at RenderBlocks the only calls to glTranslatef you'll find is in renderBlockAsItem()

hydroflame · August 14, 2013

*flips tables*!

Didn't we talk about how GUI's images are displayed just a few days ago
You know there are no convention with minecraft code xP

yes but gui, TESR and every Class<? extends Render> all have the same base

push

translate

render

pop

while ISBRH is like :

NOPE I DO WHAT I WANT *curse word also used for female dogs*!!!!

Flenix · August 14, 2013

So what's the verdict for translate? remove it? change to xyz?

Also, I was under the impression that both of these are "quads". Is that correct?

hydroflame · August 14, 2013

ive been doign a bit of research and remove it completelly, it does it for you, and yes both of thsoe are quads (but i realise the tessellator ahs some mistake :\

Flenix · August 14, 2013

Ok, I removed it. Nothing shows still, just an empty bounding box =/

hydroflame · August 14, 2013

your model is probably lying around, try like placing this block, and removing all block aroudn it, you will probably see them floating around

Flenix · August 14, 2013

nope, nowhere to be seen.

The two faces I've made should just be full sides- specifically the top and one of the sides, correct?

I made a huge tower of them, and nothing:

hydroflame · August 14, 2013

*stares blankly at the screen*

... what the fuck

you remove ONLY

GL11.glTranslated(0, 1, 1);

right ?

Flenix · August 15, 2013

Yup, as far as I remember. This is my current code:

package co.uk.silvania.roads.block.tess.renderers;

import org.lwjgl.opengl.GL11;

import net.minecraft.block.Block;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.RenderBlocks;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.IBlockAccess;
import cpw.mods.fml.client.registry.ISimpleBlockRenderingHandler;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class ShortRampRenderer implements ISimpleBlockRenderingHandler {

@Override
public void renderInventoryBlock(Block block, int metadata, int modelID, RenderBlocks renderer) {

}

    @Override
    @SideOnly(Side.CLIENT)
    public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {
	Tessellator tess = Tessellator.instance;
	GL11.glPushMatrix();
	tess.addVertexWithUV(0, 1, 1, 0, 0);
	tess.addVertexWithUV(1, 1, 1, 0, 1);
	tess.addVertexWithUV(1, 1, 0, 1, 1);
	tess.addVertexWithUV(0, 1, 0, 1, 0);

	tess.addVertexWithUV(0, 0, 1, 0, 0);
	tess.addVertexWithUV(0, 1, 1, 0, 1);
	tess.addVertexWithUV(0, 1, 0, 1, 1);
	tess.addVertexWithUV(0, 0, 0, 1, 0);
	GL11.glPopMatrix();
        return true;
    }

@Override
public boolean shouldRender3DInInventory() {
	return false;
}

@Override
public int getRenderId() {
	return 0;
}
}

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[SOLVED] Tessellator Troubles

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