From: Eric Anholt <eric@anholt.net>
Date: Wed, 3 Oct 2012 23:15:07 +0000 (-0700)
Subject: i965/vs: Fix the mlen of scratch read/write messages.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e1a518e2b1490ff4afe2efc69aa64e193bfb1324;p=mesa.git

i965/vs: Fix the mlen of scratch read/write messages.

These messages always have m0 = g0 and m1 = offset, and write has m2 = data.
Avoids regression in opt_compute_to_mrf() with a change to scratch writes to
set up the data as an MRF write in the IR.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
---

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index 9fc7ec7996c..f54c49edd80 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -187,7 +187,7 @@ vec4_visitor::SCRATCH_READ(dst_reg dst, src_reg index)
    inst = new(mem_ctx) vec4_instruction(this, VS_OPCODE_SCRATCH_READ,
 					dst, index);
    inst->base_mrf = 14;
-   inst->mlen = 1;
+   inst->mlen = 2;
 
    return inst;
 }
@@ -200,7 +200,7 @@ vec4_visitor::SCRATCH_WRITE(dst_reg dst, src_reg src, src_reg index)
    inst = new(mem_ctx) vec4_instruction(this, VS_OPCODE_SCRATCH_WRITE,
 					dst, src, index);
    inst->base_mrf = 13;
-   inst->mlen = 2;
+   inst->mlen = 3;
 
    return inst;
 }