Both inst->force_uncompressed and inst->force_sechalf mean that the
generated instruction should be uncompressed and have an execution size
of 8. We don't require the visitor to set both flags - setting
inst->force_sechalf by itself is supposed to be enough.
On Gen4-7, guess_execution_size() demoted instructions to 8-wide based
on the default compression state. On Gen8+, we instead set a default
execution size, which worked great...except that we forgot to check
inst->force_sechalf when deciding whether to use 8 or 16.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
Cc: mesa-sta...@lists.freedesktop.org
---
src/mesa/drivers/dri/i965/gen8_fs_generator.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp
b/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp
index 02e28cf..2924820 100644
--- a/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp
+++ b/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp
@@ -921,7 +921,7 @@ gen8_fs_generator::generate_code(exec_list *instructions)
default_state.mask_control = ir->force_writemask_all;
default_state.flag_subreg_nr = ir->flag_subreg;
- if (dispatch_width == 16 && !ir->force_uncompressed)
+ if (dispatch_width == 16 && !ir->force_uncompressed &&
!ir->force_sechalf)
default_state.exec_size = BRW_EXECUTE_16;
else
default_state.exec_size = BRW_EXECUTE_8;
--
2.0.0
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