Mesa (master): i965/fs: Add and use MAX_SAMPLER_MESSAGE_SIZE definition.

[Matt Turner]

Module: Mesa
Branch: master
Commit: 2dfb0671395c383caf360a5690756f77afef6663
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2dfb0671395c383caf360a5690756f77afef6663

Author: Matt Turner <mattst88 at gmail.com>
Date:   Tue Dec 10 16:22:56 2013 -0800

i965/fs: Add and use MAX_SAMPLER_MESSAGE_SIZE definition.

Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>

---

 src/mesa/drivers/dri/i965/brw_fs.h                |    2 ++
 src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp |    3 ++-
 src/mesa/drivers/dri/i965/brw_fs_visitor.cpp      |   10 ++++++----
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h
index 1a5f7f8..6ed16f6 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.h
+++ b/src/mesa/drivers/dri/i965/brw_fs.h
@@ -51,6 +51,8 @@ extern "C" {
 #include "glsl/glsl_types.h"
 #include "glsl/ir.h"
 
+#define MAX_SAMPLER_MESSAGE_SIZE 11
+
 class bblock_t;
 namespace {
    struct acp_entry;
diff --git a/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp b/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp
index f54a2de..2494b11 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp
@@ -103,7 +103,8 @@ brw_alloc_reg_set(struct brw_context *brw, int reg_width)
    int class_sizes[BRW_MAX_MRF];
 
    if (brw->gen >= 7) {
-      for (class_count = 0; class_count < 11; class_count++)
+      for (class_count = 0; class_count < MAX_SAMPLER_MESSAGE_SIZE;
+           class_count++)
          class_sizes[class_count] = class_count + 1;
    } else {
       for (class_count = 0; class_count < 4; class_count++)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 1727ef9..643ba5f 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -1231,8 +1231,9 @@ fs_visitor::emit_texture_gen5(ir_texture *ir, fs_reg dst, fs_reg coordinate,
    inst->header_present = header_present;
    inst->regs_written = 4;
 
-   if (mlen > 11) {
-      fail("Message length >11 disallowed by hardware\n");
+   if (mlen > MAX_SAMPLER_MESSAGE_SIZE) {
+      fail("Message length >" STRINGIFY(MAX_SAMPLER_MESSAGE_SIZE)
+           " disallowed by hardware\n");
    }
 
    return inst;
@@ -1424,8 +1425,9 @@ fs_visitor::emit_texture_gen7(ir_texture *ir, fs_reg dst, fs_reg coordinate,
    inst->regs_written = 4;
 
    virtual_grf_sizes[payload.reg] = next.reg_offset;
-   if (inst->mlen > 11) {
-      fail("Message length >11 disallowed by hardware\n");
+   if (inst->mlen > MAX_SAMPLER_MESSAGE_SIZE) {
+      fail("Message length >" STRINGIFY(MAX_SAMPLER_MESSAGE_SIZE)
+           " disallowed by hardware\n");
    }
 
    return inst;