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Old 09-25-04, 07:46 AM   #13
Subtestube
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Default Re: Is Rome Total War openGL?

Quote:
Originally Posted by MUYA
not much. I think what Mesce means is that the driver intermediates the OpenGL API calls which hooks into DX API for some calls/ routines etc? not sure....but OpenGL itself is different to the way it written for..in C++ or whatever. ...maybe i am wrong?
I'm not sure what you mean here...? I mean OpenGL does all the rendering in D3 to my knowledge, and GL doesn't need DirectX at all to do... well, anything in terms of actual screen rendering. At the same time, there's no good reason the D3 engine couldn't use DirectX for Sound, interaction... any of that sort of stuff. C++ Is just the programming language it's written in and has nothing (directly at least) to do with the choice between OpenGL and DirectX. DirectX is a superset of various different sub-APIs... DirectDraw and Direct3D are only two of them. So.. I guess it's possible that R:TW could be compliant with DX 9.0b, and still use OpenGL. Still, I highly doubt it does... DX just seems far more likely. In real terms, very very few current games use anything other than DirectX. One way to know is if they plan to release for Linux/MacOS. If they do, they're almost certainly not using DirectX for their rendering as it'd require most of that code to be totally re-written. Note, that this, again, is not even remotely conclusive. It's all guesswork, at best (for the moment). To be totally honest, whether it uses OpenGL or DirectX is pretty irrelevant from an end user standpoint. Least, if you have a standard PC running windows it is.
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Old 09-25-04, 12:13 PM   #14
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Default Re: Is Rome Total War openGL?

Quote:
Originally Posted by Mesce
That doesn't mean anything. Doom3 is 100% direct x 9.0c compatible, even opengl games use directX
For Direct sound and maybe Direct Draw, which I think is for the cut scene movies, though it is an OpenGL game. I think what they are saying indirectly by suggesting a DX9b card is if it requires DX9b, the card is obviously newer and should run OpenGL just fine.

I also think since Direct X is synonymous with Microsoft, so it is easier, from a marketing stand point, to suggest a Direct X 9b card is more successful than recommending a OpenGL 1.5 card.

So you are correct Mesce, it is kinda worthless anymore. I guess the next obivous solution would be to look for a Linux or Mac port. Doom 3 is suppose to do both, that should suggest OpenGL.

Then there is the obvious, dumb down all your graphics settings in the control panel for your card on DX, and set them as high as you can in OpenGL side. If you gain performance dramatically, it must be DX. If it drops lower than you were at, it must be OpenGL.

Ofcourse, I would imagine the read me file in the demo/game would have mention something more too. If not, that is pretty lame.
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Old 09-25-04, 04:34 PM   #15
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Default Re: Is Rome Total War openGL?

Quote:
Originally Posted by Subtestube
I'm not sure what you mean here...? I mean OpenGL does all the rendering in D3 to my knowledge, and GL doesn't need DirectX at all to do... well, anything in terms of actual screen rendering. At the same time, there's no good reason the D3 engine couldn't use DirectX for Sound, interaction... any of that sort of stuff. C++ Is just the programming language it's written in and has nothing (directly at least) to do with the choice between OpenGL and DirectX. DirectX is a superset of various different sub-APIs... DirectDraw and Direct3D are only two of them. So.. I guess it's possible that R:TW could be compliant with DX 9.0b, and still use OpenGL. Still, I highly doubt it does... DX just seems far more likely. In real terms, very very few current games use anything other than DirectX. One way to know is if they plan to release for Linux/MacOS. If they do, they're almost certainly not using DirectX for their rendering as it'd require most of that code to be totally re-written. Note, that this, again, is not even remotely conclusive. It's all guesswork, at best (for the moment). To be totally honest, whether it uses OpenGL or DirectX is pretty irrelevant from an end user standpoint. Least, if you have a standard PC running windows it is.
I am not so knowledgeable and was guessing well, I remember when Riva 128s came out and then those had beta openGL support and remember that some online articles and published refered to OpenGL having some hooks into DX. well thats it.....I am no expert and was not giving a defining explanation..hence..I could be wrong part
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