On Fri, Apr 21, 2006 at 12:22:56PM -0700, Ian Romanick wrote:
> > why this extension is not included in i915 driver? I added it to sources,
> > recompiled and tested with www.glest.org, it seems to be ok, so I think it
> > could
> > be included into Mesa/src/mesa/drivers/dri/i915/i915_context.c:
>
> The i915 driver uses (used to use?) code within the driver to convert
> texture environments to fragment programs. At the time, this code did
> not support GL_ARB_texture_env_crossbar. There is also generic code in
> core Mesa for translating texture environments to fragment programs.
> This code, which is used by the r300 driver, does support
> GL_ARB_texture_env_crossbar. I proposed a similar patch sometime ago,
> but the patch was rejected until the i915 driver was modified to use the
> generic code in Mesa.
I noticed this:
i915_vtbl.c:157
/* Don't support texture crossbar yet */
OUT_BATCH(_3DSTATE_COORD_SET_BINDINGS |
CSB_TCB(0, 0) |
CSB_TCB(1, 1) |
CSB_TCB(2, 2) |
CSB_TCB(3, 3) |
CSB_TCB(4, 4) |
CSB_TCB(5, 5) |
CSB_TCB(6, 6) |
CSB_TCB(7, 7));
Does it mean that enabling GL_ARB_texture_env_crossbar is useless?
--
Lukáš Hejtmánek
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