From 9fd4c27ae3e189df804b86843a6aad0e70640533 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Sun, 2 Nov 2008 12:19:02 -0800 Subject: [PATCH] i965: Avoid vs header computation for negative rhw on G4X. This cuts one MOV out when setting a zero header. --- src/mesa/drivers/dri/i965/brw_vs_emit.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c index 0b6c6b2a0af..ed0e1d5273c 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_emit.c +++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c @@ -829,12 +829,12 @@ static void emit_vertex_write( struct brw_vs_compile *c) ndc = pos; } - /* This includes the workaround for -ve rhw, so is no longer an - * optional step: + /* Update the header for point size, user clipping flags, and -ve rhw + * workaround. */ if ((c->prog_data.outputs_written & (1<key.nr_userclip || - !c->key.know_w_is_one) + (!BRW_IS_G4X(p->brw) && !c->key.know_w_is_one)) { struct brw_reg header1 = retype(get_tmp(c), BRW_REGISTER_TYPE_UD); GLuint i; -- 2.30.2