Hey everyone, I've been looking around, and I couldn't find a tutorial for rendering the overlay on a block that worked for 1.7.2. I thought that maybe I could look in Mojang's code for this, but I couldn't find the specialRenderer for the grass block (which is what I assume they are using for rendering the side of the grass block). If anyone could point me to either of the two (I'd prefer the grass block so I could figure it out myself) that would be great. Thanks!

It is at:

/net/minecraft/client/renderer/RenderBlocks.class starting at line ~5100...

Cool! Thanks!

 

EDIT:

 

Okay, so I did some looking around, and figured I could just render the two textures, with one on top of the other. Only problem is, sometimes texture A like to get rendered before texture B. Is there a way to make sure that texture A get rendered before texture B and not the other way around? Here is the code I am using to render the block right now.

 

@Override
public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {
	renderer.renderFaceYPos(block, x,y,z, block.getIcon(1, world.getBlockMetadata(x, y, z)));

	renderer.renderFaceYPos(block, x,y,z, block.getIcon(world, x,y,z, 1));

	return true;
}

 

I am using an ISimpleBlockRenderingHandler, so this method is getting called. I just need it (as mentioned before) to render some textures before others. Sometimes it does, other times it doesn't.

 

Thanks!

Okay, so I found a slightly cheaty solution:

 

@Override
public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {
                        Tessellator.instance.setColorOpaque_F(1F,1F,1F);
		Tessellator.instance.addTranslation(0F, .01F, 0F);
		renderer.renderFaceYPos(block, x,y,z, block.getIcon(world, x,y,z, 1));

		Tessellator.instance.addTranslation(0F, -.01F, 0F);
		renderer.renderFaceYPos(block, x, y, z, DummyBlockScrolls.getUnderlayer());

	return true;
}

 

Essentially, you put one texture slightly over another. Works decent. But now I have another question (still related to this). I want to make the underlayer glow, but not the over layer. How would I stop the over layer from glowing? I know I can make them both glow by using:

 

Tessellator.instance.setBrightness(brightness);

 

If I set it at zero both texture become black, if I set it to say 200, both have the appearance of glowing. How would I get the top layer to be normal and the bottom  layer to have that code added to it? I thought maybe a switch statement might work, but I couldn't figure out what to switch between...

Okay, so I found a slightly cheaty solution:

 

@Override
public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {
                        Tessellator.instance.setColorOpaque_F(1F,1F,1F);
		Tessellator.instance.addTranslation(0F, .01F, 0F);
		renderer.renderFaceYPos(block, x,y,z, block.getIcon(world, x,y,z, 1));

		Tessellator.instance.addTranslation(0F, -.01F, 0F);
		renderer.renderFaceYPos(block, x, y, z, DummyBlockScrolls.getUnderlayer());

	return true;
}

 

Essentially, you put one texture slightly over another. Works decent. But now I have another question (still related to this). I want to make the underlayer glow, but not the over layer. How would I stop the over layer from glowing? I know I can make them both glow by using:

 

Tessellator.instance.setBrightness(brightness);

 

If I set it at zero both texture become black, if I set it to say 200, both have the appearance of glowing. How would I get the top layer to be normal and the bottom  layer to have that code added to it? I thought maybe a switch statement might work, but I couldn't figure out what to switch between...

 

Like this:

https://github.com/SanAndreasP/SAPManagerPack/blob/master/java/sanandreasp/core/manpack/helpers/client/RenderBlockGlowOverlay.java#L106-L126

 

Basically I render the block (which is not glowing), set the brightness to 240 (max brightness), then rendered the glowing texture and last but not least reset the brightness.

In your case it's vice versa (set brightness, render glowy texture, reset brightness, render standard block)

It... Works... Kind of.... It is rendering the layers funny. The two textures are also fighting for control over who gets top layer. Did I do something wrong?

 

@Override
public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {	
        DummyBlockScrolls dummy = (DummyBlockScrolls)block;
        renderer.renderStandardBlockWithColorMultiplier(block, x, y, z, 1F, 1F, 1F);
        
        if( block instanceof DummyBlockScrolls ) {
        	
	    Tessellator.instance.setBrightness(240);
	    Tessellator.instance.setColorOpaque(255, 255, 255);

	    renderer.renderFaceYNeg(block, x, y, z, dummy.getUnderlayer());
	    renderer.renderFaceYPos(block, x, y, z, dummy.getUnderlayer());
	    renderer.renderFaceZNeg(block, x, y, z, dummy.getUnderlayer());
	    renderer.renderFaceZPos(block, x, y, z, dummy.getUnderlayer());
	    renderer.renderFaceXNeg(block, x, y, z, dummy.getUnderlayer());
	    renderer.renderFaceXPos(block, x, y, z, dummy.getUnderlayer());


	    Tessellator.instance.setBrightness(block.getMixedBrightnessForBlock(world, x, y, z));
        }
        return true;


}

That's a typical example of z-fighting. If you have two textures that render in the same exact plane, the graphics engine renders them as fighting for dominance and can cause weird effects. If I were doing this, I'd render them in parallel planes but with a small distance between them.

Yeah, I thought that might be what I needed done, but that produces another problem, if one side of a block stops rendering, and I slowly turn to look at it, only the underlayer renders..