From: Arkadi S. <ar...@it...> - 2003-02-04 23:33:46
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On Tue, Jan 28, 2003 at 11:01:53PM -0500, Leif Delgass wrote: > On Wed, 29 Jan 2003, Arkadi Shishlov wrote: > > - 'Texture environment modes: GL_BLEND is done in software..' - mean > > glTexEnv(GL_BLEND) is software. GL_DECAL is hw accelerated. > > GL_MODULATE with GL_LUMINANCE_ALPHA is software. > > Right. GL_BLEND texture environment is not possible on mach64. Also, the > card can't modulate alpha values when texturing, so texture environments > where Final A = A fragment * A texture aren't fully compliant, e.g. > GL_MODULATE with GL_RGBA textures. The case of GL_MODULATE/GL_RGBA is not What do you mean by aren't fully compliant? Final A = Fragment A or Final A = Texture A? It looks like Fragment A.. arkadi. |