[1.8.8] Rendering a model on the player when item is in custom slot?

[HappyKiller1O1]

So, I need to render my custom model (a backpack) on the player when my item is in my custom slot. I know how to check for my item there, I am just not sure how to render it. I know it requires me to use this new system in 1.8, but I have no clue where to start. If someone could point me to a tutorial, some docs, or give me some examples on how to accomplish this, it would be great.

[HappyKiller1O1]

Bump

[HappyKiller1O1]

So, I actually got some progress done on this (looking through the system). And, the model renders, but with two problems: first is MAJOR FPS drop (150 to 3). I am guessing it is because I add the layer in my event constantly, but I am not sure. Secondly, the model scale is incorrect, as shown here (it's rendered too small, just below the body which is where it needs to be):

 

 

My classes:

 

Layer renderer base (for ease when I need to render different backpack models):

package com.happykiller.weightlimit.client.renderer;

import com.happykiller.weightlimit.main.ModReference;
import com.happykiller.weightlimit.render.models.ModelMediumBackpack;

import net.minecraft.client.model.ModelBase;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.client.renderer.entity.RendererLivingEntity;
import net.minecraft.client.renderer.entity.layers.LayerRenderer;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.util.ResourceLocation;

public abstract class LayerBackpackBase<T extends ModelBase> implements LayerRenderer<EntityLivingBase> {
    protected T field_177186_d;
    private final RendererLivingEntity<?> renderer;
    private float alpha = 1.0F;
    private float colorR = 1.0F;
    private float colorG = 1.0F;
    private float colorB = 1.0F;
    
    public LayerBackpackBase(RendererLivingEntity<?> rendererIn) {
    	this.renderer = rendererIn;
    	this.initBackpack();
    }
    
    public void doRenderLayer(EntityLivingBase entitylivingbaseIn, float p_177141_2_, float p_177141_3_, float partialTicks, float p_177141_5_, float p_177141_6_, float p_177141_7_, float scale) {
    	renderLayer(entitylivingbaseIn, p_177141_2_, p_177141_3_, partialTicks, p_177141_5_, p_177141_6_, p_177141_7_, scale);
    }
    
    private void renderLayer(EntityLivingBase entitylivingbaseIn, float f1, float f2, float partialTicks, float p_177182_5_, float p_177182_6_, float p_177182_7_, float scale) {
    	T t = this.field_177186_d;
    	t.setModelAttributes(this.renderer.getMainModel());
    	t.setLivingAnimations(entitylivingbaseIn, f1, f2, partialTicks);
    	t = (T)new ModelMediumBackpack(6.0F);
    	this.setShownLayer(t);
    	
    	this.renderer.bindTexture(new ResourceLocation(ModReference.MOD_RL + "/models/backpack/MediumBackpack.png"));
    	
    	GlStateManager.color(this.colorR, this.colorG, this.colorB, this.alpha);
        t.render(entitylivingbaseIn, f1, f2, p_177182_5_, p_177182_6_, p_177182_7_, scale);
    }

public boolean shouldCombineTextures() {
	return false;
}
    
    public abstract void initBackpack();
    protected abstract void setShownLayer(T model);
}

 

LayerBipedBackpack (the layer I add):

package com.happykiller.weightlimit.client.renderer;

import net.minecraft.client.model.ModelBiped;
import net.minecraft.client.renderer.entity.RendererLivingEntity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class LayerBipedBackpack extends LayerBackpackBase<ModelBiped> {

public LayerBipedBackpack(RendererLivingEntity<?> rendererIn) {
	super(rendererIn);
}

public void initBackpack() {
	this.field_177186_d = new ModelBiped(0.5F);
}

protected void setShownLayer(ModelBiped model) {
	model.bipedBody.showModel = true;
}
}

 

My Event:

@SubscribeEvent
public void onRenderEntity(RenderLivingEvent.Post<EntityPlayer> event) {
	//System.out.println("Render Event Called");

	if(event.entity instanceof EntityPlayer) {
		EntityPlayer player = (EntityPlayer)event.entity;

		event.renderer.addLayer(new LayerBipedBackpack(event.renderer));

		LogHelper.logInfo("Layer Added");
	}
}

 

I hope someone can help me here, I don't understand this plague of the new layer system. It seems no one ever has a clue on what to do here.