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Thread: Is Shadow Mapping possible in OpenGL ES 1.0 ?

  1. #1
    Junior Member
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    Nov 2009
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    Is Shadow Mapping possible in OpenGL ES 1.0 ?

    Hi. This is my first post here. English is not my native language but I'll try my best.

    I'm creating a simple 3D game using OpenGL ES 1.0 on Android platform.

    I've tried casting shadow following this tutorial (which uses Stencil Buffer method):
    http://nehe.gamedev.net/data/lessons/le ... ?lesson=27

    The result is a cool shadow effect. But it depends too much on geometry and thus not very flexible.

    Then I found a much easier way to cast a shadow. It's called "Shadow Mapping". I followed the tutorial here:
    http://www.paulsprojects.net/tutorials/smt/smt.html

    But it uses ARB_depth_texture and ARB_shadow extension. So I bet it can't be used with Android's OpenGL ES 1.0.
    I've tried googling for "Shadow Mapping" and "OpenGL ES" but still can't find a usable info.

    Can anyone recommend me a good place/site I can study for this please?
    Thank you in advance. =)

  2. #2
    Junior Member
    Join Date
    Sep 2009
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    Re: Is Shadow Mapping possible in OpenGL ES 1.0 ?

    Did you ever figure this out? I'm assuming that the GLES2.0 devices (Droid, N1) will be able to do it but I was hoping there would be a way using the fixed function pipeline of ES 1.0.

  3. #3

    Re: Is Shadow Mapping possible in OpenGL ES 1.0 ?

    There's no public ARB_depth_texture or ARB_shadow extension equivalent for GLES1. Vendors may have proprietary extensions, which they haven't made public.

    There is the public GL_OES_depth_texture extension for GLES2. An ARB_shadow extension equivalently isn't necessary for GLES2, since the R test can be done with shaders.

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