I made a tile entity that renders with a .obj model. Elix helped me get it working but it's acting funny. It follows my mouse. But the I have noticed that the model disappears when I'm not looking at the tile entity. Then if I look at it it appears again.

 

Here is a video (sorry for the lag) depicting the glitch:

 

Here is my renderer's code:

public class LuminaOrbRenderer extends TileEntitySpecialRenderer {
    ResourceLocation texture;
    ResourceLocation objModelLocation;
    IModelCustom model;

    public LuminaOrbRenderer(){
        texture = new ResourceLocation(Lumina.MODID, "models/LuminaOrbTexture.png");
        objModelLocation = new ResourceLocation(Lumina.MODID, "models/LuminaOrb.obj");
        model = AdvancedModelLoader.loadModel(objModelLocation);
    }

    @Override
    public void renderTileEntityAt(TileEntity te, double posX, double posY, double posZ, float timeSinceLastTick) {
        TileEntityLuminaOrb orb = (TileEntityLuminaOrb) te;
        float scale = 0.02F;
        float rotation = orb.rotation + (timeSinceLastTick / 2F);

        bindTexture(texture);

        GL11.glPushMatrix();
        GL11.glScalef(scale, scale, scale);
        GL11.glTranslated(posX + 0.5, posY + 0.5,  posZ + 0.5);
        GL11.glRotatef(rotation, 0F, 1F, 0.5F);
        model.renderAll();
        GL11.glPopMatrix();
    }
}

 

Any help is appreciated at this point. I can't get this to work.

My GL knowledge is not very good, but for one I can tell - this surely looks like scaling problem. I've had problems like this before and the solution almost always lied in bad scaling.

 

Try moving scaling after translation.

I've also had similar problems using only one matrix push/pop.  Add a second one between the translate and the rotate.

Ok, so like this?

GL11.glPushMatrix();
GL11.glTranslated(posX + 0.5, posY + 0.5, posZ + 0.5);
GL11.glScalef(scale, scale, scale);
GL11.glPushMatrix();
GL11.glRotatef(rotation, 0F, 1F, 0.5F);
model.renderAll();
GL11.glPopMatrix();
GL11.glPopMatrix();

 

I moved glScalef below glTranslated. Also, as Draco18s said (if I'm understanding correctly) I added a second push/pop. If I'm not understanding correctly just tell me.

The second Push/Pop pair doesn't do anything. Read here what Push/PopMatrix actually do: http://www.swiftless.com/tutorials/opengl/pop_and_push_matrices.html

 

And yes, first translate to its position, then scale it or you will scale the position as well.

I know what it's supposed to do, but I've seen really odd things when I try to do both a rotation and a translation with only the one pair.

 

There was a forge wiki page on it (can't figure out which one now) that has the comment:

//I don't know why you need another, but you do

Or something along those lines.

 

I don't have a renderer that's going bonkers right now (the one I was having trouble with most recently I ended up rebuilding in techne upside down because it refused to turn around properly).

Ok, I was tinkering around with it, using what you guys said. But now it's doing this. Isn't it cute?

It's probably scaled a little small. What should I change the scale to?

Here is my updated code:

public class LuminaOrbRenderer extends TileEntitySpecialRenderer {
    ResourceLocation texture;
    ResourceLocation objModelLocation;
    IModelCustom model;

    public LuminaOrbRenderer(){
        texture = new ResourceLocation(Lumina.MODID, "models/LuminaOrbTexture.png");
        objModelLocation = new ResourceLocation(Lumina.MODID, "models/LuminaOrb.obj");
        model = AdvancedModelLoader.loadModel(objModelLocation);
    }

    @Override
    public void renderTileEntityAt(TileEntity te, double posX, double posY, double posZ, float timeSinceLastTick) {
        TileEntityLuminaOrb orb = (TileEntityLuminaOrb) te;
        float scale = 0.02F;
        float rotation = orb.rotation + (timeSinceLastTick / 2F);

        bindTexture(texture);

        GL11.glPushMatrix();
        GL11.glTranslated(posX + 0.5, posY + 0.5, posZ + 0.5);
        GL11.glScalef(scale, scale, scale);
        GL11.glPushMatrix();
        GL11.glRotatef(rotation, 0F, 1F, 0.5F);
        model.renderAll();
        GL11.glPopMatrix();
        GL11.glPopMatrix();
    }
}

It's not following the mouse anymore now. Forgot to say that.

Yay! It works now!

Thanks everyone!

BTW, to get it to render as a 3D item, you can render it just like in the world: just pass the renderer a dummy entity and render it at (0,0,0).

Ok, where would I put that code to render the item?

Implement TileEntityInventoryRenderer in your TESR

It doesn't exist. Is that in 1.8?

To make item render in 1.7.10, use  MinecraftForgeClient.registerItemRenderer(item, IItemRenderer);

Where iitem renderer is new class that implements it (Example: LuminaOrbItemRenderer), in constructor you pass it YourTileEntityRenderer (!!!WARNING: SAME OBJECT THAT YOU PASS TO bindTileEntitySpecialRenderer OR MINECRAFT WILL CRASH!!!) and where your return true to first methods, and in last, you just call terenderer.render ...

It doesn't exist. Is that in 1.8?

 

Its 1.7.10 and what I'm using.

Ok, this is what I have so far:

public class LuminaOrbItemRenderer implements IItemRenderer {

    @Override
    public boolean handleRenderType(ItemStack item, ItemRenderType type) {
        return false;
    }

    @Override
    public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
        return false;
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {

    }
}

What do I do now?

Ok, this is what I have so far:

public class LuminaOrbItemRenderer implements IItemRenderer {

    @Override
    public boolean handleRenderType(ItemStack item, ItemRenderType type) {
        return false;
    }

    @Override
    public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
        return false;
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {

    }
}

What do I do now?

in constructor you pass it YourTileEntityRenderer (!!!WARNING: SAME OBJECT THAT YOU PASS TO bindTileEntitySpecialRenderer OR MINECRAFT WILL CRASH!!!) and where your return true to first two methods, and in last, you just call terenderer.render ...

 

It doesn't exist. Is that in 1.8?

 

Its 1.7.10 and what I'm using.

 

Oh lol, I thought you said TileEntityItemRenderer. Now I get it. You actually said TileEntityInventoryRenderer.

 

Edit: Well, that doesn't exist either, I think I'll use Elix's way.

So, like this Elix?

public class LuminaOrbItemRenderer implements IItemRenderer {
    LuminaOrbRenderer tesr;


    public  LuminaOrbItemRenderer(LuminaOrbRenderer renderer){
        tesr = renderer;
    }

    @Override
    public boolean handleRenderType(ItemStack item, ItemRenderType type) {
        return true;
    }

    @Override
    public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
        return true;
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {
        tesr.renderTileEntityAt(null, 0, 0, 0, 0);
    }
}

So, like this Elix?

public class LuminaOrbItemRenderer implements IItemRenderer {
    LuminaOrbRenderer tesr;


    public  LuminaOrbItemRenderer(LuminaOrbRenderer renderer){
        tesr = renderer;
    }

    @Override
    public boolean handleRenderType(ItemStack item, ItemRenderType type) {
        return true;
    }

    @Override
    public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
        return true;
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {
        tesr.renderTileEntityAt(null, 0, 0, 0, 0);
    }
}

and where your return true to first 2 methods (optional)

If your tileentity renderer doen't need te data, you can use null, but yours uses some, so in constructor initialise tileentity, and pass it instead of null...

 

Whoops, sorry.  It was some of my own helper code, haha.  The one reply was done from my tablet, so I couldn't look at my code.

 

It was an interface I created so that my TEs could be passed to an IItemRenderer, just as you've done and I didn't need a separate IItemRenderer for each TE.  I apologize for the confusion.