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not a dinosaur posted:Any thoughts on a 3D modeller that meshes well with OpenGL? I want to do some basic low-poly modelling and skeletal (I guess?) animation. Blender is ok but theres soooo much better modellers out there, especially the commercial ones. Some of them have student/learning editions or trials (both Silo 3d and Modo come to mind, and they're both excellent). Just because they happen to be really fully featured besides doesn't mean you can't do low poly models in them just as easily.
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Dec 12, 2008 07:00
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brian posted:It was just what a tutorial was doing, I changed it to 1.0f for the near plane but either way it ran fine. If its the Nehe tutorials you should be aware that they contain a lot of out of date or just plain bad advice!
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May 16, 2009 01:06
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The1ManMoshPit posted:Does anybody know of an alternative to glReadPixels on the iPhone (OpenGL ES 1.5)? I'm profiling a section of my code that needs to read some data that I've rendered into an FBO and a quarter of my time is spent just copying data out with glReadPixels. This seems especially ridiculous since the iPhone's video memory is actually shared main memory iirc, so it seems like I should just be able to get a pointer to it somehow which would obviously speed my code up immensely. Are you using BGRA format?
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Sep 2, 2009 20:43
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Sorry I wasn't much help The1ManMoshPit, the only reason I said try BGRA was because some comments on a GPGPU website led me to believe that for most ATI and NVIDIA cards, BGRA was the native format and RGBA was a little slower, obviously that isn't true for the iphone  I'm a real novice at 3d stuff and was wondering if anyone could give me any advice on getting a (relatively) simple program to work. A while ago I made a program which generated descriptions of triangles (i.e. it would make a list of 200 or so collections of 6 float coordinates between 0 and 1 and 4 float colours between 0 and 1). I was using cairo to draw the triangles, comparing them against a source image and giving a similarity score out of 1.0 with 0 being completely dissimilar and 1 being identical. The source code is all in this thread here: http://forums.somethingawful.com/showthread.php?threadid=3197725 As posted the code doesn't work but I have no idea why; I know I screwed up something with opengl but I'm not experienced to know what. It will run, but all the pictures it generates seem to be utterly random rather and never improve in fitness, which doesn't happen when rendering with cairo. If anyone could give the second class in that thread, "render.py" a look over and tell me what I'm doing wrong or not doing I'd greatly appreciate it.
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Sep 7, 2009 19:26
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