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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@bwidawsk.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Ben Widawsky 2011-06-16 16:53:04 -07:00
parent d2c6cef18a
commit 6750226e6d
1 changed files with 5 additions and 5 deletions
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10
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
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@ -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;