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Type: Posts; User: giles

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    Re: Missing texture3D

    A bit of clarification to the above: OpenGL ES 2.0 actually uses version 1.0.17 of the shader language. I assume this was done entirely to confuse people...
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    Re: Manipulating gl_LightSource[gl_MaxLights]

    Hi pion,

    WebGL is based on OpenGL ES 2.0 -- that is, the version of OpenGL designed for restricted hardware like cellphones -- and doesn't support lighting out of the box; you have to code it...
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    Re: Floating point textures?

    Thanks, gregg -- looks like they've been added now, and they're reported to work in Chromium nightlies.
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    Re: Content protection.

    Because it's a question that's asked frequently :-P
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    Re: WebGL doesn't work for me !!!

    Interesting. Do you have an Intel or other non-OpenGL-compatible graphics card? I have the impression that it ignores the software rendering toggle if you have working OpenGL drivers; I certainly...
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    Re: WebGL doesn't work for me !!!

    I was talking about SOFTWARE rendering:



    Don't know if ANGLE works just yet.[/quote]

    OK, sorry -- not sure how I misread that. So have they built OSMesa into the installer?
  7. Thread: [HELP] First try

    by giles
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    Re: [HELP] First try

    This page on my blog is a really minimal example: http://learningwebgl.com/lessons/lesson02/ -- you should see a multi-coloured triangle, and a blue square.
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    Re: WebGL doesn't work for me !!!

    @kguciek -- have the built ANGLE in, then? I haven't seen any announcements, but could easily have missed it.
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    Re: chromium not working in local?

    Chromium has some issues with its security restrictions when loading stuff from files, in particular when using XmlHttpRequest; Minefield is a little less strict. I suspect you're hitting that...
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    Re: Tuturials on complex lighting normals

    Hi there -- I'm a bit confused, I would use "quad" to mean a flat four-vertexed polygon, made up of two triangles lying in the same plane. The normal for such a figure is the normal to the plane.
    ...
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    Re: Lighting turns textures pure white.

    Could you post some examples of the code (shader/vertex attributes) that you're using? That might help people advise on what's going wrong.
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    Re: Calling obsolete TexImage2d

    WebGL is only meant to offer very limited support for power-of-two textures (see http://www.khronos.org/webgl/wiki/WebGL_and_OpenGL_Differences) but Minefield doesn't currently enforce the...
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    Re: Moving vertex buffers to prototype scope

    Yup, that's the standard way to do it in JavaScript. I think people normally call the var they use "that" :-)
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    Re: Floating point textures?

    As far as I understand it, they're not working right now. A lot of the shadow map implementations I've seen have worked around this by basically doing their own conversion from floats to 4-byte...
  15. Re: Canvas 3D: can't get a native PBuffer... (firefox-3.7a6)

    Thanks for passing that on -- I've just been updating my "Getting started" page, and I've added a note that right now Chromium looks best for 64-bit Linux.
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    Re: WebGL doesn't work for me !!!

    Aha -- I guess you're probably the same Phoenix as this one, then: http://learningwebgl.com/blog/?p=2266&cpage=1#comment-4584 :-)
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    Re: Plugin of Webgl for FF ?

    Hi SkiD,



    The bad news is, you can't... WebGL is only available in pre-release versions of browsers. *

    But the good news is, that shouldn't matter. You can download and install Minefield or...
  18. Re: Canvas 3D: can't get a native PBuffer... (firefox-3.7a6)

    Hmm, it sounds like a bugfix for a Minefield problem with 64-bit Linux has just landed: http://www.khronos.org/webgl/public-mailing-list/archives/1006/msg00124.html. It might be worth trying...
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    Re: WebGL doesn't work for me !!!

    Hi there,

    What kind of graphics hardware do you have?


    Giles
  20. Re: Canvas 3D: can't get a native PBuffer... (firefox-3.7a6)

    That's interesting -- I think Krzysztof Pasek was recommending older builds of Firefox specifically because they work with Mesa software rendering on Linux, so that shouldn't matter for you.

    I'm...
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    Mesa library for Minefield

    Hi all,

    Recently, the Firefox team updated their support for software rendering so that they supported the standard Mesa library that's distributed with most Linux variants:...
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    Re: The Moon, Jupiter, Mars globes

    As I understand it, WebGL isn't meant to support NPOT textures -- Minefield is just a bit more forgiving than it should be :-)
  23. Re: Minnefield: can't create a OSMesa pseudo-PBuffer

    Hmm. It might be that those instructions have been made out-of-date by changes to Firefox: http://learningwebgl.com/blog/?p=2224&cpage=1#comment-3407 says that the Mesa library now needs gl_...
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    Re: WebGL in a Chrome or Firefox regular release?

    I'm not involved in any of the browser development, so take this with a whole shovel-load of salt, but judging from my impressions from the comments on the standard-related mailing list, I'd guess...
  25. Thread: newbie questions

    by giles
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    Re: newbie questions

    Hi Bob,

    It all depends on your timelines. WebGL works very well, but only in the development versions of Firefox, Safari and Chrome. The specification isn't at version 1.0 yet -- there's a...
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