Mesa (master): i965: Don't use message headers for untyped reads

[Kristian Høgsberg]

Module: Mesa
Branch: master
Commit: de5a450bd360d24db65cbba5b6633f800fda0d2e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=de5a450bd360d24db65cbba5b6633f800fda0d2e

Author: Kristian Høgsberg Kristensen <krh at bitplanet.net>
Date:   Fri Oct 16 21:38:05 2015 -0700

i965: Don't use message headers for untyped reads

We always set the mask to 0xffff, which is what it defaults to when no
header is present. Let's drop the header instead.

v2: Only remove header for untyped reads. Typed reads always need the
    header.

Reviewed-by: Francisco Jerez <currojerez at riseup.net>
Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>
Signed-off-by: Kristian Høgsberg Kristensen <krh at bitplanet.net>

---

 src/mesa/drivers/dri/i965/brw_eu_emit.c |    3 +--
 src/mesa/drivers/dri/i965/brw_fs.cpp    |    2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index bf2fee9..ebd811f 100644
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -2906,11 +2906,10 @@ brw_untyped_surface_read(struct brw_codegen *p,
    const unsigned sfid = (devinfo->gen >= 8 || devinfo->is_haswell ?
                           HSW_SFID_DATAPORT_DATA_CACHE_1 :
                           GEN7_SFID_DATAPORT_DATA_CACHE);
-   const bool align1 = (brw_inst_access_mode(devinfo, p->current) == BRW_ALIGN_1);
    struct brw_inst *insn = brw_send_indirect_surface_message(
       p, sfid, dst, payload, surface, msg_length,
       brw_surface_payload_size(p, num_channels, true, true),
-      align1);
+      false);
 
    brw_set_dp_untyped_surface_read_message(
       p, insn, num_channels);
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 71da9d9..c8df940 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -4070,7 +4070,7 @@ fs_visitor::lower_logical_sends()
       case SHADER_OPCODE_UNTYPED_SURFACE_READ_LOGICAL:
          lower_surface_logical_send(ibld, inst,
                                     SHADER_OPCODE_UNTYPED_SURFACE_READ,
-                                    fs_reg(0xffff));
+                                    fs_reg());
          break;
 
       case SHADER_OPCODE_UNTYPED_SURFACE_WRITE_LOGICAL: