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brub43

Radeon 9800pro strangeness

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Hello, i seem to be having a little trouble with a game my company''s working on. So far, the problem only seems to happen on Radeon 9800pro cards. Here''s a screenshot of it: http://www3.sympatico.ca/eric.vanbeurden/error-shot.jpg It looks like a grill with many round holes has been placed over the screen, but the game isn''t rendering them (nor does it even have a texture resembling that) The game uses OpenGL 1.2+. I''m thinking it''s related to the multisample extension. I added that code a while ago, but was never able to test it because i don''t seem to have a card that fully supports the extension. I don''t personally have access to a Radeon 9800 card, so i can''t really test this bug out directly. Has anyone else run into a problem like this before?? Any help would be greatly appreciated =) thanks eric EST Games

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I don''t know. I would guess that somehow the radeon is applying a shader or effect (I dunno what the proper term would be). Maybe you should contact ATI?



(Stolen from Programmer One)
UNIX is an operating system, OS/2 is half an operating system, Windows is a shell, and DOS is a boot partition virus

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I''ve never seen that before. I use ARB_multisample on my Radeon 9700 pro with no problems, and it''s in fairly common usage, so I''d be surprised if it''s that. Maybe it''s a smartshader effect that someone has enabled in their display settings by mistake.

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i could see if it works on my system, i have the same card.

ddonahoe@vt.edu

it seems like settings->display->Settings->Advanced->3D
click the custom button, then click the "Trueform shader FX" tab and disable it. that may be your problem

[edited by - Mulligan on March 25, 2004 5:57:34 PM]

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well, i''ve so far figured out (with the awesome help of some nice testers =) ) that it''s some kind of an incompatibility with ATI''s FSAA option (of the "Always On" variety). I don''t have an ATI card that can deal with FSAA, so i can''t really test =( ... Does anyone know what could be causing this incompatibility? Wild stabs-in-the-dark are welcome!

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Guest Anonymous Poster
Lol, that looks like one of the effects you can enable under the device''s properties on the windows drivers. I can''t imagine what error would generate small, perfect circles.

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Hey AP: I can''t find anything like that under the device / driver settings... where is it? I read somewhere ATI had put options for post process effects into the drivers. Where is it please?

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Wild Shot: do you set the resolution properly? That effect might in some really weird way be caused by an attempt to render an antialiased 25x19 image to a bigger context.

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If you are using any offscreen surfaces antialiasing can cause some superfunky effects - but I''ve never seen anything like this before. Definitely send this screenshot to ATI and copy/paste some rendering code along with it - their devrel ROCKS.

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