On 09/20/2011 04:42 PM, Paul Berry wrote:
This patch series enables support for gl_ClipDistance in the Intel
i965 driver. The first three patches are in mesa core (and hence
potentially affect all drivers); the rest are i965-specific.
For those of you who aren't concerned with the i965 driver, you will
probably be most interested in looking at patch 2 in the series, which
modifies the all-important gl_vert_result and gl_frag_attrib enums. I
believe that the changes I've made don't violate any drivers'
assumptions about the layout of these enums, but it would be good to
get some confirmation about this from people more familiar with
non-i965 code.
I applied patches 1-3 on a local branch and tested softpipe. No
regressions with conform or any clip-related piglit tests.
Tested-by: Brian Paul <bri...@vmware.com>
BTW, maybe someone can implement the corresponding gallium changes.
This shouldn't be much more than bumping PIPE_MAX_CLIP_PLANES to 8,
adding a new PIPE_CAP_MAX_CLIP_PLANES, setting
ctx->Const.MaxClipPlanes in the state tracker (default to 6 if
PIPE_CAP_MAX_CLIP_PLANES returns zero) and doing some testing.
-Brian
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