Mesa (master): i965: step message register allocation
Ben Widawsky
bwidawsk at kemper.freedesktop.org
Mon Jun 27 21:21:27 UTC 2011
Module: Mesa
Branch: master
Commit: 6750226e6d915742ebf96bae2cfcdd287b85db35
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=6750226e6d915742ebf96bae2cfcdd287b85db35
Author: Ben Widawsky <ben at bwidawsk.net>
Date: Thu Jun 16 16:53:04 2011 -0700
i965: step message register allocation
The system routine requires m0 be reserved for saving off architectural
state. Moved the allocation to start at 2 instead of 0.
Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
Reviewed-by: Eric Anholt <eric at anholt.net>
---
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 6116b10..2704f06 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -1622,7 +1622,7 @@ fs_visitor::emit_dummy_fs()
fs_inst *write;
write = emit(FS_OPCODE_FB_WRITE, fs_reg(0), fs_reg(0));
- write->base_mrf = 0;
+ write->base_mrf = 2;
}
/* The register location here is relative to the start of the URB
@@ -1783,7 +1783,7 @@ fs_visitor::emit_fb_writes()
{
this->current_annotation = "FB write header";
GLboolean header_present = GL_TRUE;
- int nr = 0;
+ int nr = 2;
int reg_width = c->dispatch_width / 8;
if (intel->gen >= 6 &&
@@ -1793,7 +1793,7 @@ fs_visitor::emit_fb_writes()
}
if (header_present) {
- /* m0, m1 header */
+ /* m2, m3 header */
nr += 2;
}
@@ -1862,7 +1862,7 @@ fs_visitor::emit_fb_writes()
fs_inst *inst = emit(FS_OPCODE_FB_WRITE);
inst->target = target;
- inst->base_mrf = 0;
+ inst->base_mrf = 2;
inst->mlen = nr;
if (target == c->key.nr_color_regions - 1)
inst->eot = true;
@@ -1880,7 +1880,7 @@ fs_visitor::emit_fb_writes()
}
fs_inst *inst = emit(FS_OPCODE_FB_WRITE);
- inst->base_mrf = 0;
+ inst->base_mrf = 2;
inst->mlen = nr;
inst->eot = true;
inst->header_present = header_present;
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