Previously, we generated this for FB writes in SIMD16 mode:
load_payload(16) vgrf5@8+0.0:F, vgrf1:F, vgrf2:F, vgrf3:F, vgrf4:F
fb_write(8) (null):UD, vgrf5@8+0.0:F 1sthalf
The LOAD_PAYLOAD's destination had its register width set to 8, and the
FB_WRITE had its execution size set to 8. This seems wrong, and while
it probably doesn't affect anything, we should fix it.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 2 ++
1 file changed, 2 insertions(+)
I don't think this is necessary, I just noticed it when comparing
programs and thought it was odd.
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 4f89974..8aafbef 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -3460,6 +3460,7 @@ fs_visitor::emit_single_fb_write(fs_reg color0, fs_reg
color1,
fs_reg payload = fs_reg(GRF, -1, BRW_REGISTER_TYPE_F);
load = emit(LOAD_PAYLOAD(payload, sources, length));
payload.reg = virtual_grf_alloc(load->regs_written);
+ payload.width = dispatch_width;
load->dst = payload;
write = emit(FS_OPCODE_FB_WRITE, reg_undef, payload);
write->base_mrf = -1;
@@ -3468,6 +3469,7 @@ fs_visitor::emit_single_fb_write(fs_reg color0, fs_reg
color1,
load = emit(LOAD_PAYLOAD(fs_reg(MRF, 1, BRW_REGISTER_TYPE_F),
sources, length));
write = emit(FS_OPCODE_FB_WRITE);
+ write->exec_size = dispatch_width;
write->base_mrf = 1;
}
--
2.2.2
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