Sprites cut off/invisible/etc

[Enjay]

Well, many of us have answered these queries a number of times and I thought that it might help to throw some pix together to help explain the issues. It's a combination of editing and general query-type stuff, so I'm putting it here.

I realise that a single 640x480 image might not be as good as a proper explanation but the Wiki didn't seem like the right place and I don't really have myself set up properly with a decent Doom related web page ATM.

So, here goes.

[Edit The image links from this ancient thread are all dead. Go here for a better explanation viewtopic.php?f=39&t=56521 [/edit]

[Remmirath]

While this may be annoying, the fact that the Revenant head is cut off is because the sprites are perfectly clipped in GZDoom, while ZDoom just creates some sort of illusion that makes them to stay under the ceiling, but that's not the correct behavior. That may also depend from your sprite clipping parameters in the OpenGL options, and if you have only the Y axis billboard for your sprites.

[CaptainToenail]

I shrank the Revanant using the scale property, but it just looked silly

[Enjay]

While this may be annoying, the fact that the Revenant head is cut off is because the sprites is perfectly clipped in GZDoom, while in ZDoom it just creates some sort of illusion that makes it stay under the ceiling, but that's not the correct behavior. That may also depend from your sprite clipping parameters in the OpenGL options, and if you have only the Y axis billboard for your sprites.

Yeah, I'm not posting this as a bug report or anything. I know what's going on. However, these questions get asked regularly and I hope the pictures go some of the way to explaining why for those who don't know.

[Remmirath]

That's what happens when i don't read the whole text carefully.

[skadoomer]

I have to say, your quest for the utmost technical has been reaching peak levels these past few months. I'm not an expert on this subject, but I had an idea for the cause. I believe the opengl has more precise drawing controls than a software renderer, where clipping can be calculated and handled much more effectively than in software mode where such means are far more difficult or just to not exist to the same degree.