[D1XR rev1226, D2XR rev1255] Software Renderer Bugs

[Ryusei117]

Alright, this is what I've found so far testing the software renderer. Since all the glitches involve graphics, I've included a screenshot of each one. Unless otherwise stated, the only "d*x.ini" or command-line option I used was "-use_players_dir", and I compiled with "scons install opengl=0".

• FIXED - Upon exiting a D2 game to the main menu, all the menu's options become invisible. I can still select them normally, and sub-menus like "Options" render fine--the main menu just doesn't show up. Changing the screen resolution corrects this. This problem also occurred once in D1, but I couldn't figure out what was triggering it. EDIT: Originally reported by A Future Pilot...oops. (-_-)' Sorry about the duplicate. Though I guess it helps having that report together with all the rest...
  • [li]http://dl.dropbox.com/u/26944122/dxxr-so...nomenu.pcx (File removed.)
    
  [/li]
  
• FIXED - When I use low-res fonts--meaning no hi-res addon pack for D1 and "-lowresfont" for D2--the Load Game menu's screenshot overlaps much of the savegame list. Seems to be independent of the screen resolution.
  • [li]http://dl.dropbox.com/u/26944122/dxxr-so...adhres.pcx (File removed.)
    
  • http://dl.dropbox.com/u/26944122/dxxr-so...adlres.pcx (File removed.)
    
  [/li]
  
• Passing through doors in both D1 and D2 causes visual oddities. It seems that when the first-person camera itself intersects the open door, strange vertical bars appear.
  • [li]http://dl.dropbox.com/u/26944122/dxxr-so.../door0.pcx (File removed.)
    
  • http://dl.dropbox.com/u/26944122/dxxr-so.../door1.pcx (File removed.)
    
  • http://dl.dropbox.com/u/26944122/dxxr-so.../door2.pcx (File removed.)
    
  [/li]
  
• Approaching some walls, floors, and ceilings in D1 and D2 causes a weird, stretched texture to grow onto the screen from the edge. Some surfaces show the effect better than others; the lava near the red key in D1 level 1 produced the most noticeable effect in my test.
  • [li]http://dl.dropbox.com/u/26944122/dxxr-so...retch0.pcx (File removed.)
    
  • http://dl.dropbox.com/u/26944122/dxxr-so...retch1.pcx (File removed.)
    
  [/li]
  

Overall, though, the software renderer ran dead stable--didn't crash once, and had high FPS on the original Descent resolutions of 640x480 and 320x200, even on my older laptop.

EDIT: Just found that the stretched-texture glitch also presents on some non-lava surfaces. I updated that item above.

[sdfgeoff]

Exactly the same problems here. I thought is was just my machine though.

[zico]

@Ryusei: If you wish you can delete all these images. I can easily reproduce these glitches myself.

The little rendering artifacs I care for later. Specifically since changing to texture mapper "fp" for example virtually kills these glitches (can confirm that door issue and have not seen the texture stretching as well so far) and gives a generally better performance.

[Ryusei117]

Nice, with that last fix, there's nothing stopping me from going full nostalgia mode on D2. Now all I need is pixel doubling for simulated 320x200 in D1...wonder if there's a setting I could enable on my end for that, like in X.Org or something...

[zico]

Pixel doubling is planned as one of the newer renderers. Of course this is all in pretty los priority due to the availability of OpenGL (ES).