Incorrect winding for voxel triangles

[Arookas]

The indices for the face triangles appear to be incorrect for voxel meshes. This is visible when the backfaces are culled (e.g. translucent renderstyle, alpha):

[Graf Zahl]

fixed

[Arookas]

Thanks! Just checked out the latest svn build. It appears that fixed it for all but the side faces, which now have both triangles reversed. I can't tell exactly which sides those are, however.

[Graf Zahl]

I didn't see that when I tested it.

[Arookas]

It only shows up when the actor's renderstyle is set to translucent. I also found that it is the front and back sides that are facing the wrong way:


(On the left, renderstyle is normal. On the right, renderstyle is translucent.)

I think the problem for this resides in MakeSlabPolys. I don't know which culling bits correspond to which side (Ken's docs don't specify this), but I've attached the demo map seen above if it helps.

[Arookas]

I figured out the problem. The back and front faces are indeed swapped in MakeSlabPolys. Swapping them like this:

Code: Select all

if (cull & 4)
{
	AddFace(x+1, y, z, x, y, z, x+1, y, z+c, x, y, z+c, *col, check);
}
if (cull & 8)
{
	AddFace(x, y+1, z, x+1, y+1, z, x, y+1, z+c, x+1, y+1, z+c, *col, check);
}

makes the above test map voxels render as intended: