PixelBuffer on RE2 With irix6.4

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Yann Argotti (Yann.Argotti++at++imag.fr)
Thu, 15 May 1997 14:35:40 +0200 (MDT)

        Hello,

        I want to make offcreen Rendering with an Onyx Re2 (2xR10000, 1 Gbytes for RAM
        and irix 6.4). PixelBuffer solution appears the good way for that.

        My problem is that, when I create PBuffer with glXCreateGLXPbufferSGIX
        (an OpenGL instruction), a "BadAlloc" error (ie: insufficient resources
        for operation) stops the programme.

        I just try to create a PBuffer of 2x3 pixels, with a red, green, blue size
        of 4, depth size of 23, in a single buffer mode and aPBuffer drawable type.
        glXChooseFBConfigSGIX function gives me 3 suitable FBconfigs (I decide to use
        the first one (the best) where GLX_MAX_PBUFFER_WIDTH_SGIX is 2048 and
        GLX_MAX_PBUFFER_HEIGHT_SGIX is 1120).

        Also, I suppose having enought ressources to allocate this little PBuffer
        and the solution, to solve current problem, is not very clear.
        Is it a bug from me, from OpenGL or from Hardware ??

        Thanks for any help.

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