Thought I would add a post in case anyone has any suggestions on what could be causing this:
I am having a problem with graphics artifacts in Microprose F-19 Stealth Fighter. This is difficult to describe, but I will try. I attached some screenshots. (I had to run DosBox in Windowed mode for the screenshots to look accurate, but it runs fine in full-screen mode).
First off, I am running the basic 0.63 build of DosBox (I plan to upgrade to the CVS build, but haven’t yet). I have an AMD 2800 Barton, 768M of Ram, 128M ATI Radeon 9200 Graphics card, etc.
Microprose F-117A Stealth Fighter 2.0 runs fine in DosBox (AFAICT), so the problem is not with the DosBox setup itself.
If I run the game directly in Windows XP (no DosBox), the sound is bad and plays through the PC speaker, the gameplay is a bit too fast, and the speed is a bit choppy, but the graphics are crystal clear.
In DosBox, the sound and speed are excellent. (See attached screenshots. Ignore the pixellation from the .jpg compression.) This is a very basic PC game. The first screenshot is just before takeoff. The sky in this game should always be the same cyan color that you see here. The second screenshot shows how the game looks a little while after playing it. The sky will randomly change colors and return to cyan. In the screenshot, I am flying toward a single house, but the house is not being cleared as the plane advances, so you see shadow images behind the house. Eventually, these shadow images will fill up the screen and obscure the HUD text. The screen will also “fix” itself when a waypoint is reached, only to have the problem re-occur.
I am also enclosing my dosbox.conf file, although I am not sure what I have changed or should have left alone.
Here is what I have tried:
Fulldouble - true - seemed to make the images crisper, but no effect.
Fullfixed - no effect
Output - overlay and ddraw made the screen look “fuzzy”, no effect on problem.
Memsize - tried reducing this to 2, 1, and 0.64 since this is what this game probably expects, no effect. Since it ran fine in WinXP, I doubt this is the problem.
Scaler - changed from normal2x to none - had to adjust monitor for fullscreen afterwards. Seemed to help, but didn’t eliminate the problem.
Core - changed from normal to simple - no effect.
XMS and EMS - changed from true to false - no effect.
Any suggestions on what areas to change?