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Type: Posts; User: bentlegen

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    Re: Anti Aliasing

    Are you specifying alpha for your line color(s)? A screenshot would be helpful.
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    Re: please..read this..and help me...-0-

    OpenGL|ES 1.0 Implementation for Linux

    - Ben
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    Re: any suggestion for learning materials?

    I should add that if you're solely interested in learning OpenGL|ES and not necessarily development for mobile devices, you can also build OpenGL|ES applications for Windows using Hybrid's Win32...
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    Re: stencil test in OES

    Take a look at this tutorial:

    http://www.zeuscmd.com/tutorials/opengles/25-Reflections.php
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    Re: Hardware Acceleration

    In OpenGL|ES, the internal texture format must match the format of the data sent to glTexImage2D. Could that be your problem?

    - ben
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    Re: 2 Questions???

    Regarding #1: You're first going to have to tell us what ES implementation you're using. But here's a few ideas, see if they help.

    a) Try GL_NEAREST texture filtering
    b) Try setting...
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    Re: gluLookAt() in OpenGL ES ?

    I think I should raise the point that UG is not a part of OpenGL|ES specification. It is a completely undocumented (but handy) ES-related library that is packaged with a few implementations, but not...
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    Re: Texture Objects and texture management

    Once you've called glTexImage2D, you don't need to hold on to your pointer. The driver now has a copy of the image data, assuming there was memory available. If not, you should check glGetError for...
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    Re: alpha blend with an extra alpha.

    Set flat color shading and call glColor4f(1.0f, 1.0f, 1.0f, a2). This assumes you're blending with the frame buffer using glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA). Should blend according to...
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    Re: The Best 3D Model Format For OpenGL ES

    I don't believe any model format is any more "optimized" for rendering; really, once you've loaded the data from the file, it's all the same. The only exception being if a file format is...
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    Re: How to Get A Title Bar in Gerbera?

    I don't believe Gerbera is actually responsible for window management, apart from associating the window/display with a rendering context. Likely, this is some PocketPC/Windows mobile function which...
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    Re: Help needed(Texture Mapping)

    Just a guess, but it's likely that you're not specifying the proper height/width of the texture to glTexImage2D, and that the few colors that are getting through are being clamped throughout the rest...
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    Re: Help needed(Texture Mapping)

    I should add that those ports use UG and therefore likely only work with the Khronos Linux and Vincent implementations.

    You might want to look at regular OpenGL [texture mapping] tutorials. The...
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    Re: Help needed(Texture Mapping)

    Gautam converted a bunch of NeHe OpenGL tutorials to OpenGL|ES a few months ago.

    Take a look at this thread.

    - ben
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    Re: glIsTexture ?

    Are you sure you're using Hybrid's 1.1 implementation? glIsTexture wasn't specified in 1.0.

    - ben
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    Re: help a newbie get started

    Maybe this will help:

    http://www.hybrid.fi/main/download/opengl_es.php

    - ben

    [ December 16, 2004: Message edited by: bentlegen ]
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    Re: What about glGetFloat?

    OpenGL ES 1.1 supports glGetFloat with the parameter GL_MODELVIEW_MATRIX.

    - ben
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    Re: question about eglGetConfigs

    The list returned by eglChooseConfig is sorted from best configuration to worst configuration, based on the requested attributes you've sent to the function.

    - ben
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    Re: No Quads, Polygone ?

    2 triangles can be used to draw a quad. Just make sure they share the same 4 vertices and you're set.

    - Ben
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    Re: Sourecs for Functions ?

    I don't believe UG is in any way a part of the OpenGL|ES specification - rather, it was just a quick utility thrown together to demonstrate some common OpenGL Red Book samples.

    As far as I can...
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    Re: Fonts in opengl es ?

    There's no reason why you couldn't have bitmapped fonts in OpenGL|ES. Although you might want to consider a different file format if memory constraints are an issue on the platform you're developnig...
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    Re: Nonsquare texturemaps?

    Furthermore, just because the texture file dimensions need to be powers of two, doesn't mean you need to use all that space.

    i.e. You could fill a 256 x 256 texture with some 167x233 image, and...
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    Re: Hybrid Implementation ... What's wrong?

    Thanks for the hand. Now don't I look silly ...

    - Ben
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    Hybrid Implementation ... What's wrong?

    I'm assuming I've done something silly, but regardless, I'll state my problem.

    I've successfully compiled and run the sample program given with Hybrid's Gerbera implementation. Just for fun, I...
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    Re: Compressed Textures - any out there?

    I guess I'm confused - does glCompressedTextures "take" a compressed texture, in the format designated, or does it create one?

    I guess the internalFormat paramater confuses me most. It suggests to...
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