i965/fs: set execution size to 8 with simd8 ddy instruction

Commit dd5c825 changed the way how execution size for instructions
get set. Previously it was based on destination register width, now
it is set explicitly when emitting instructions.

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90258

diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
index a99b7f75b266ca3083b793545f112548e4f48b68..b6b0d0523a083f71af6a0f030343c89164373ce1 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
@@ -941,6 +941,7 @@ fs_generator::generate_ddy(enum opcode opcode,
       brw_push_insn_state(p);
       brw_set_default_access_mode(p, BRW_ALIGN_16);
       if (unroll_to_simd8) {
+         brw_set_default_exec_size(p, BRW_EXECUTE_8);
          brw_set_default_compression_control(p, BRW_COMPRESSION_NONE);
          if (negate_value) {
             brw_ADD(p, firsthalf(dst), firsthalf(src1), negate(firsthalf(src0)));