[1.7.10] Tesselator opacity

[enbecko]

Hey guys,

 

I am trying to make surface on top of a tileentity. The code looks like this:

 

     Tessellator te = Tessellator.instance;
                GL11.glEnable(GL11.GL_BLEND);        
                te.startDrawingQuads();
                float xOff = -0.5F, yOff = -1.499F, zOff = -0.5F;
                te.setColorRGBA_F(1, 1, 1, 0.5f); 
                te.addVertexWithUV(xOff, yOff+1, zOff, 0.3, 0.1);
                te.addVertexWithUV(xOff, yOff+1, zOff+1, 0.7, 0.1);
                te.addVertexWithUV(xOff+1, yOff+1, zOff+1, 0.3, 0.1);
                te.addVertexWithUV(xOff+1, yOff+1, zOff, 0.3, 0.1);
                te.draw();//method 2
                GL11.glDisable(GL11.GL_BLEND);

 

and it's transparent ingame but the problem is that you can see through the tileentity:

 

 

 

Thanks in advance

enbecko

[Draco18s]

Well, you have two problems.

 

0) The tessellator doesn't give a shit about transparency, that's a GL thing.

1) You never tell it what blend function to use

2) Your UVs are fucked up.

 

                te.addVertexWithUV(xOff, yOff+1, zOff, 0.3, 0.1);
                te.addVertexWithUV(xOff, yOff+1, zOff+1, 0.7, 0.1);
                te.addVertexWithUV(xOff+1, yOff+1, zOff+1, 0.3, 0.1);
                te.addVertexWithUV(xOff+1, yOff+1, zOff, 0.3, 0.1);

 

Let me distill this down into the important information.  Removing Y entirely.  Making xOff and zOff equal to zero.  Multiplying the UVs by ten to reduce textual chaos.

 

(0, 0) : (3, 1)

(0, 1) : (7, 1)

(1, 1) : (3, 1) //again

(1, 0) : (3, 1) //and a third time

[TheGreyGhost]

Hi

 

>and it's transparent ingame but the problem is that you can see through the tileentity:

I don't understand what you mean - if you can't see through the tileentity, it wouldn't be transparent-?

 

What is it supposed to look like?  I'd also suggest you test just one TileEntity at a time, it looks like you've got 50 of them in your screenshot?

 

In addition to Draco's comments, some info about the tessellator, in case you're not familiar:

http://greyminecraftcoder.blogspot.com.au/2013/08/the-tessellator.html

 

-TGG

[enbecko]

Hey,

 

thanks for the help but i use these UVs only for tests but still I don't understand why Tileentitys rendered with the TileEntitySpecialRenderer get invisible behind the surface:

 

 

                GL11.glEnable(GL11.GL_BLEND);    
                GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

                GL11.glColor4f(1, 1, 1, .5F);
                te.startDrawingQuads();
                float xOff = -0.5F, yOff = -1.4F, zOff = -0.5F;
                te.addVertexWithUV(xOff, yOff+1, zOff+1, 0.3, .1);
                te.addVertexWithUV(xOff, yOff+1, zOff+2, 0.3, .1);
                te.addVertexWithUV(xOff+1, yOff+1, zOff+2, 0.3, .1);
                te.addVertexWithUV(xOff+1, yOff+1, zOff+1, 0.3, .1);
                te.draw();
                GL11.glDisable(GL11.GL_BLEND);

 

enbecko

[Draco18s]

Is your block declared as being opaque? Are you rendering in pass 0?

[TheGreyGhost]

Hey,

 

thanks for the help but i use these UVs only for tests but still I don't understand why Tileentitys rendered with the TileEntitySpecialRenderer get invisible behind the surface:

 

Hi

 

unfortunately I still don't understand what you're trying to do and what the symptoms of the problem are.  The picture looks strange, but I don't know what you expect it to look like.

 

-TGG