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OneEightHundred posted:Loading opengl32.dll will get the appropriate DLLs. Apparently you'd want to use vanilla GetProcAddress for the regular entry points and wglGetProcAddress for everything else, but I really don't know how well that behaves with various OpenGL versions. Best practice is to use GPA for the whole interface. Unless i'm missing something, i'd only be doing lots of work to duplicate something that's already there. OneEightHundred posted:It's redundant, checking query availability automatically flushes. NV_occlusion_query didn't do that so it's probably a leftover from that.  OneEightHundred posted:It's not a terrible idea to flush if you're going to do other things before you request the query results though.
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Nov 2, 2008 20:39
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| # ¿ May 13, 2024 23:31 |
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Just a random note to anyone following the occlusion query stuff above: Don't forget to delete the queries once you're done with 'em.  Edit: Also, question: How would i go about making a polygon render visibly from both sides without rendering it twice? Mithaldu fucked around with this message at 13:10 on Nov 11, 2008 |
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Nov 11, 2008 12:04
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OneEightHundred posted:glDisable(GL_CULL_FACE)  Thanks. I needed it to make the occlusion check shapes also render when the camera is inside them. Now i only need to make the shapes a bit more fine-grained with the help of the stuff from the gamedev thread and then i can get back to the fun stuff. 
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Nov 11, 2008 19:49
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Well, for one thing: First off make sure you know programming. Begin by picking up a book on whatever language the iPhone uses. Then, what helped me tremendously were the NeheGL tutorials [ http://nehe.gamedev.net/ ]. However take these with a grain of salt. They show the most simple, quick and rudimentary way to get certain things done and help you to understand what's going on. However you would NEVER actually use the things they show in production as they are demonstrated there, as the most simple way is usually also the least optimal. Edit: Also, this guy comes recommended by people who hate the Nehe tutorials: http://www.xmission.com/~nate/opengl.html Mithaldu fucked around with this message at 20:20 on Nov 11, 2008 |
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Nov 11, 2008 20:18
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OneEightHundred posted:Don't do that, not only does it break if something inside of the volume is obscuring the outer hull, OneEightHundred posted:but it's much cheaper to just use convex visibility volumes and check if the camera point is inside. Alright, got it. vvvv Mithaldu fucked around with this message at 12:38 on Nov 12, 2008 |
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Nov 12, 2008 09:57
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Can you try giving a bit more information? When i tested it in my project i also made a few test to see if the reported pixel count was right and it was in every case for me.
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Nov 21, 2008 07:13
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You may want to simply generate/load a texture with varying alpha values and draw the rectangle with that texture. Just make sure you have all the blending flags (refer to tutorials linked earlier in the thread) enabled and draw the rectangle last.
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Nov 23, 2008 05:26
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Wavefront .obj is what you're looking for. With a tiny bit of understanding of what the abbreviations mean it is even human-readable for smaller models.
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Dec 14, 2008 22:25
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| # ¿ May 13, 2024 23:31 |
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shodanjr_gr posted:I render at 512 * 512 resolution, a scene comprising of 2 spheres and a quad, 3 times (i'm doing shadowmapping), and this thing draws at LESS than 1 frame per second and hammers the CPU like there is no tomorrow. Just for kicks, try dropping the spheres and stick to cubes for now. See what happens.
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Dec 17, 2008 21:48
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