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i965/fs: Implement fs_inst::force_sechalf support on Broadwell.

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Back when I originally wrote this code, force_sechalf was only used for
Gen4 code, so I didn't bother hooking it up.  However, it's used more
generally these days.  In particular, we use it for computing
gl_SamplePosition.

Fixes Piglit's spec/ARB_sample_shading/builtin-gl-sample-position tests.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77222
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kenneth Graunke 2014-04-17 17:58:45 -07:00
parent 92840aabf7
commit a1273a07ed
3 changed files with 8 additions and 4 deletions
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10
src/mesa/drivers/dri/i965/gen8_fs_generator.cpp
View file

@ -927,10 +927,12 @@ gen8_fs_generator::generate_code(exec_list *instructions)
else
default_state.exec_size = BRW_EXECUTE_8;
/* fs_inst::force_sechalf is only used for original Gen4 code, so we
* don't handle it. Add qtr_control to default_state if that changes.
*/
assert(!ir->force_sechalf);
if (ir->force_uncompressed || dispatch_width == 8)
default_state.qtr_control = GEN6_COMPRESSION_1Q;
else if (ir->force_sechalf)
default_state.qtr_control = GEN6_COMPRESSION_2Q;
else
default_state.qtr_control = GEN6_COMPRESSION_1H;
switch (ir->opcode) {
case BRW_OPCODE_MOV:

1
src/mesa/drivers/dri/i965/gen8_generator.cpp
View file

@ -87,6 +87,7 @@ gen8_generator::next_inst(unsigned opcode)
gen8_set_exec_size(inst, default_state.exec_size);
gen8_set_access_mode(inst, default_state.access_mode);
gen8_set_mask_control(inst, default_state.mask_control);
gen8_set_qtr_control(inst, default_state.qtr_control);
gen8_set_cond_modifier(inst, default_state.conditional_mod);
gen8_set_pred_control(inst, default_state.predicate);
gen8_set_pred_inv(inst, default_state.predicate_inverse);

1
src/mesa/drivers/dri/i965/gen8_generator.h
View file

@ -186,6 +186,7 @@ protected:
unsigned exec_size;
unsigned access_mode;
unsigned mask_control;
unsigned qtr_control;
unsigned flag_subreg_nr;
unsigned conditional_mod;
unsigned predicate;