From: Eric Anholt <eric@anholt.net>
Date: Tue, 7 Sep 2010 19:53:19 +0000 (-0700)
Subject: i965: Store the byte address in the VS constant buffer as an integer.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=24c12e6c7f8aa8c2f4c163d23d740b070bfabfc3;p=mesa.git

i965: Store the byte address in the VS constant buffer as an integer.

We carefully multiplied our two ints (since we want to be precise
after all) then stored them in a float, which is not specced to really
work, in addition to wasting precision.  Fixes
vp-arl-constant-array-huge-* things since the assertions were added.
---

diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index 49ef9742a25..ad0d00b87c4 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -954,7 +954,7 @@ get_reladdr_constant(struct brw_vs_compile *c,
    struct brw_compile *p = &c->func;
    struct brw_reg const_reg = c->current_const[argIndex].reg;
    struct brw_reg addrReg = c->regs[PROGRAM_ADDRESS][0];
-   struct brw_reg byte_addr_reg = get_tmp(c);
+   struct brw_reg byte_addr_reg = retype(get_tmp(c), BRW_REGISTER_TYPE_D);
 
    assert(argIndex < 3);