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i965: Don't request GLSL IR lowering of gl_VertexID 

Let the lowering in NIR handle it instead.

This hurts one shader that occurs twice in shader-db (SynMark GSCloth)
on IVB and HSW.  No other shaders or platforms were affected.

total cycles in shared programs: 253438422 -> 253438426 (0.00%)
cycles in affected programs: 412 -> 416 (0.97%)
helped: 0
HURT: 2

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Antia Puentes <apuentes@igalia.com>
This commit is contained in:
Ian Romanick 2017-10-18 08:59:47 -07:00
parent 2765633116
commit 19e0dd1ad3
1 changed files with 0 additions and 1 deletions
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src/mesa/drivers/dri/i965/brw_context.c
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@ -595,7 +595,6 @@ brw_initialize_context_constants(struct brw_context *brw)
ctx->Const.QuadsFollowProvokingVertexConvention = false;
ctx->Const.NativeIntegers = true;
ctx->Const.VertexID_is_zero_based = true;
/* Regarding the CMP instruction, the Ivybridge PRM says:
*