Ben Skeggs wrote:
> Am Dienstag, den 11.12.2007, 12:47 +1100 schrieb Ben Skeggs:
>> Hello,
>>
>> On nv40 hardware, fixed-function glClipPlane must be implemented in a
>> vertex program.
>>
>> Attached is a patch which adds support for the clip distance vtxprog
>> outputs as described in GL_NV_vertex_program{2,3,4}. The patch also
>> allows the driver to configure whether it wants the fixed-function vp
>> generator to insert clip planes, and the style of matrix multiplications
>> it prefers.
>>
>> If there's no objection I'd like to commit this as it's required for
>> implementing clip planes in the nv40 gallium driver.
> No objections then? :) If not I'll commit this tomorrow night after I
> finish work.
>

Ben, sorry I missed this the first time round.

I think there's a bit of thinking needed on clip planes generally - I'm 
playing around a little with the i965 driver that also performs the 
cliptesting in a post-amble to the vertex shader.  The software draw/ 
module would also ideally work this way...

Can you give me a couple of days to look at the issue & maybe work 
through it a bit more with you?

Keith

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