I have an ISBRH for a custom crop. In eclipse, it looks fine and renders the way it should, but outside eclipse, the block goes back and forth between rendering as a normal block and rendering the way it should.

Heres how its supposed to look:

 

 

 

 

And heres how it often looks:

 

 

 

 

 

Heres the rendering class:

public class RenderSoyPlant implements ISimpleBlockRenderingHandler{

public static int renderId;
private Tessellator t = Tessellator.instance;

public RenderSoyPlant(){
	renderId = RenderingRegistry.getNextAvailableRenderId();
}

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

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

	IIcon icon = block.getIcon(0, world.getBlockMetadata(x, y, z));

	double u = icon.getMinU();
	double v = icon.getMinV();
	double U = icon.getMaxU();
	double V = icon.getMaxV();

	t.addTranslation(x, y, z);
	int lightValue = block.getMixedBrightnessForBlock(world, (int)x, (int)y, (int)z);
	t.setBrightness(lightValue);
	t.setColorOpaque_F(1.0F, 1.0F, 1.0F);
	renderer.renderStandardBlockWithAmbientOcclusion(block, (int)x, (int)y, (int)z, lightValue, lightValue, lightValue);

	renderModel(u, v, U, V);

	t.addTranslation(-x, -y, -z);

	return true;
}

private void renderModel(double u, double v, double U, double V){
	t.addVertexWithUV(0.5, 1, 1, u, v);
	t.addVertexWithUV(0.5, 1, 0, U, v);
	t.addVertexWithUV(0.5, 0, 0, U, V);
	t.addVertexWithUV(0.5, 0, 1, u, V);
	t.addVertexWithUV(0.5, 1, 0, U, v);
	t.addVertexWithUV(0.5, 1, 1, u, v);
	t.addVertexWithUV(0.5, 0, 1, u, V);
	t.addVertexWithUV(0.5, 0, 0, U, V);

	t.addVertexWithUV(1, 1, 0.5, u, v);
	t.addVertexWithUV(0, 1, 0.5, U, v);
	t.addVertexWithUV(0, 0, 0.5, U, V);
	t.addVertexWithUV(1, 0, 0.5, u, V);
	t.addVertexWithUV(0, 1, 0.5, U, v);
	t.addVertexWithUV(1, 1, 0.5, u, v);
	t.addVertexWithUV(1, 0, 0.5, u, V);
	t.addVertexWithUV(0, 0, 0.5, U, V);

	t.addVertexWithUV(0.825, 1, 0.825, u, v);
	t.addVertexWithUV(0.125, 1, 0.125, U, v);
	t.addVertexWithUV(0.125, 0, 0.125, U, V);
	t.addVertexWithUV(0.825, 0, 0.825, u, V);
	t.addVertexWithUV(0.125, 1, 0.125, U, v);
	t.addVertexWithUV(0.825, 1, 0.825, u, v);
	t.addVertexWithUV(0.825, 0, 0.825, u, V);
	t.addVertexWithUV(0.125, 0, 0.125, U, V);

	t.addVertexWithUV(0.825, 1, 0.125, u, v);
	t.addVertexWithUV(0.125, 1, 0.825, U, v);
	t.addVertexWithUV(0.125, 0, 0.825, U, V);
	t.addVertexWithUV(0.825, 0, 0.125, u, V);
	t.addVertexWithUV(0.125, 1, 0.825, U, v);
	t.addVertexWithUV(0.825, 1, 0.125, u, v);
	t.addVertexWithUV(0.825, 0, 0.125, u, V);
	t.addVertexWithUV(0.125, 0, 0.825, U, V);
}

@Override
public boolean shouldRender3DInInventory(int modelId) {
	return false;
}
@Override
public int getRenderId() {
	return renderId;
}
}

Hi

 

That's quite odd.  It looks to me like it's trying to render as a standard cut-down block using your texture for all six sides.

 

What is this line in there for?

renderer.renderStandardBlockWithAmbientOcclusion(block, (int)x, (int)y, (int)z, lightValue, lightValue, lightValue);

 

First thing I would I suggest you try:

add System.out.println("renderWorldBlock()") to your method and see if is still getting called when the rendering goes strange.

 

-TGG

 

 

 

It wasn't getting called, but it turns out it was an optifine problem, so sorry for wasting your time.