We want consistent behavior in the meaning of the flag_subreg field
between SNB and IVB+.
v2 (Jason Ekstrand):
- Add some extra commentary
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Doing instruction header setup in the generator is awful for a number
of reasons. For one, we can't schedule the header setup at all. For
another, it means lots of implied writes which the instruction scheduler
and other passes can't properly read about. The second isn't a huge
problem for FB writes since they always happen at the end. We made a
similar change to sampler handling in ff4726077d.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Now that we have the implied header in src[0] for tracking purposes, we
may as well use it in the generator. This makes things a tiny bit more
general.
Reviewed-by: Matt Turner <mattst88@gmail.com>
This is much cleaner than everything that wants a default value poking
at the bits of p->current directly.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Adds suppport for ARB_fragment_shader_interlock. We achieve
the interlock and fragment ordering by issuing a memory fence
via sendc.
Signed-off-by: Plamena Manolova <plamena.manolova@intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
When using multiple RT write messages to the same RT such as for
dual-source blending or all RT writes in SIMD32, we have to set the
"Last Render Target Select" bit on all write messages that target the
last RT but only set EOT on the last RT write in the shader.
Special-casing for dual-source blend works today because that is the
only case which requires multiple RT write messages per RT. When we
start doing SIMD32, this will become much more common so we add a
dedicated bit for it.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
The only reason it was it's own opcode was so that we could detect it
and adjust the source register based on the payload setup. Now that
we're using the ATTR file for FS inputs, there's no point in having a
magic opcode for this.
v2 (Jason Ekstrand):
- Break the bit which removes the CINTERP opcode into its own patch
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This is better than compression control because it naturally extends to
SIMD32.
v2:
- Push/pop instruction state around adjusted codegen (Ken)
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
The fall-back does not work correctly in SIMD16 mode and the register
allocator should ensure that we never hit this case anyway.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Since all of the fs_generator::generate_foo methods take a fs_inst * as
the first parameter, just remove the name to quiet the compiler.
src/intel/compiler/brw_fs_generator.cpp: In member function ‘void fs_generator::generate_barrier(fs_inst*, brw_reg)’:
src/intel/compiler/brw_fs_generator.cpp:743:41: warning: unused parameter ‘inst’ [-Wunused-parameter]
fs_generator::generate_barrier(fs_inst *inst, struct brw_reg src)
^~~~
src/intel/compiler/brw_fs_generator.cpp: In member function ‘void fs_generator::generate_discard_jump(fs_inst*)’:
src/intel/compiler/brw_fs_generator.cpp:1326:46: warning: unused parameter ‘inst’ [-Wunused-parameter]
fs_generator::generate_discard_jump(fs_inst *inst)
^~~~
src/intel/compiler/brw_fs_generator.cpp: In member function ‘void fs_generator::generate_pack_half_2x16_split(fs_inst*, brw_reg, brw_reg, brw_reg)’:
src/intel/compiler/brw_fs_generator.cpp:1675:54: warning: unused parameter ‘inst’ [-Wunused-parameter]
fs_generator::generate_pack_half_2x16_split(fs_inst *inst,
^~~~
src/intel/compiler/brw_fs_generator.cpp: In member function ‘void fs_generator::generate_shader_time_add(fs_inst*, brw_reg, brw_reg, brw_reg)’:
src/intel/compiler/brw_fs_generator.cpp:1743:49: warning: unused parameter ‘inst’ [-Wunused-parameter]
fs_generator::generate_shader_time_add(fs_inst *inst,
^~~~
src/intel/compiler/brw_vec4_generator.cpp: In function ‘void generate_set_simd4x2_header_gen9(brw_codegen*, brw::vec4_instruction*, brw_reg)’:
src/intel/compiler/brw_vec4_generator.cpp:1412:52: warning: unused parameter ‘inst’ [-Wunused-parameter]
vec4_instruction *inst,
^~~~
src/intel/compiler/brw_vec4_generator.cpp: In function ‘void generate_mov_indirect(brw_codegen*, brw::vec4_instruction*, brw_reg, brw_reg, brw_reg, brw_reg)’:
src/intel/compiler/brw_vec4_generator.cpp:1430:41: warning: unused parameter ‘inst’ [-Wunused-parameter]
vec4_instruction *inst,
^~~~
src/intel/compiler/brw_vec4_generator.cpp:1432:63: warning: unused parameter ‘length’ [-Wunused-parameter]
struct brw_reg indirect, struct brw_reg length)
^~~~~~
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
v2 (idr): Don't allow CSEL with a non-float src2.
v3 (idr): Add CSEL to fs_inst::flags_written. Suggested by Matt.
v4 (idr): Only set BRW_ALIGN_16 on Gen < 10 (suggested by Matt). Don't
reset the access mode afterwards (suggested by Samuel and Matt). Add
support for CSEL not modifying the flags to more places (requested by
Matt).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> [v3]
Reviewed-by: Matt Turner <mattst88@gmail.com>
NIR has code to lower these away for us but we can do significantly
better in many cases with register regioning and SIMD4x2.
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
These days, we're just passing a pointer to a prog_data field, which
we already have access to. We can just use it directly.
(In the past, it was a pointer to a separate value.)
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This makes sure that the header-present bit of the message descriptor
is in sync with the IR instruction fields, which gives the optimizer
more control to avoid the overhead of setting up a message header when
it's possible to do so.
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This allows representing conditional mods and predicates on f1.0-f1.1
at the IR level by adding an extra bit to the flag_subreg
backend_instruction field.
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This gives the scheduler visibility into the headers which should
improve scheduling. More importantly, however, it lets the scheduler
know that the header gets written. As-is, the scheduler thinks that a
texture instruction only reads it's payload and is unaware that it may
write to the first register so it may reorder it with respect to a read
from that register. This is causing issues in a couple of Dota 2 vertex
shaders.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104923
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Align16 is no more. We previously generated an align16 ADD instruction
to calculate DDY:
add(16) g25<1>F -g23<4>.xyxyF g23<4>.zwzwF { align16 1H };
Without align16, we now implement it as:
add(4) g25<1>F -g23<0,2,1>F g23.2<0,2,1>F { align1 1N };
add(4) g25.4<1>F -g23.4<0,2,1>F g23.6<0,2,1>F { align1 1N };
add(4) g26<1>F -g24<0,2,1>F g24.2<0,2,1>F { align1 1N };
add(4) g26.4<1>F -g24.4<0,2,1>F g24.6<0,2,1>F { align1 1N };
where only the first two instructions are needed in SIMD8 mode.
Note: an earlier version of the patch implemented this in two
instructions in SIMD16:
add(8) g25<2>F -g23<4,2,0>F g23.2<4,2,0>F { align1 1N };
add(8) g25.1<2>F -g23.1<4,2,0>F g23.3<4,2,0>F { align1 1N };
but I realized that the channel enable bits will not be correct. If we
knew we were under uniform control flow, we could emit only those two
instructions however.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
In a future patch, generate_ddy will want to inspect inst->exec_size.
Change generate_ddx as well for consistency.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The PLN instruction is no more. Its functionality is now implemented
using two MAD instructions with the new native-float type. Instead of
pln(16) r20.0<1>:F r10.4<0;1,0>:F r4.0<8;8,1>:F
we now have
mad(8) acc0<1>:NF r10.7<0;1,0>:F r4.0<8;8,1>:F r10.4<0;1,0>:F
mad(8) r20.0<1>:F acc0<8;8,1>:NF r5.0<8;8,1>:F r10.5<0;1,0>:F
mad(8) acc0<1>:NF r10.7<0;1,0>:F r6.0<8;8,1>:F r10.4<0;1,0>:F
mad(8) r21.0<1>:F acc0<8;8,1>:NF r7.0<8;8,1>:F r10.5<0;1,0>:F
... and in the case of SIMD8 only the first pair of MAD instructions is
used.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
If multiple instructions are emitted, special handling of things like
conditional mod and NoDDClr/NoDDChk need to be performed.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This isn't technically broken, but the next patch will make this
function report whether it generated multiple instructions, and that
information will be used to disable the application of conditional mod
by the generic code.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
We have to start render targets at binding table index 0 in order to use
headerless FB write messages, and in fact already assume this in a bunch
of places in the code. Let's finish that off, and not bother storing 0
in a struct to pretend to add it in a few places.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This reverts commit 9cd60fce9c.
Above commit caused 2000+ piglit tests to assert fail. Disabling
the align1 mode on gen10 for now to avoid failures.
Cc: Matt Turner <mattst88@gmail.com>
Cc: Rafael Antognolli <rafael.antognolli@intel.com>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Tested-by: Rafael Antognolli <rafael.antognolli@intel.com>
v2: Fix alignment style (Topi Pohjolainen)
(Jason Ekstrand)
- Enable bit_size parameter to scattered messages to enable different
bitsizes byte/word/dword.
- Remove use of brw_send_indirect_scattered_message in favor of
brw_send_indirect_surface_message.
- Move scattered messages to surface messages namespace.
- Assert align1 for scattered messages and assume Gen8+.
- Inline brw_set_dp_byte_scattered_read.
v3: (Jason Ekstrand)
- Use renamed brw_byte_scattered_data_element_from_bit_size method
- Assert scattered read for Gen8+ and Haswell.
- Use conditional expresion at components_read.
- Include comment about params for scattered opcodes.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
v2: (Jason Ekstrand)
- Enable bit_size parameter to scattered messages to enable different
bitsizes byte/word/dword.
- Remove use of brw_send_indirect_scattered_message in favor of
brw_send_indirect_surface_message.
- Move scattered messages to surface messages namespace.
- Assert align1 for scattered messages and assume Gen8+.
- Inline brw_set_dp_byte_scattered_write.
v3: - Remove leftover newline (Topi Pohjolainen)
- Rename brw_data_size to brw_scattered_data_element and use
defines instead of an enum (Jason Ekstrand)
- Assert scattered write for Gen8+ and Haswell (Jason Ekstrand)
Signed-off-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Signed-off-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Although it is possible to emit them directly as AND/OR on brw_fs_nir,
having a specific opcode makes it easier to remove duplicate settings
later.
v2: (Curro)
- Set thread control to 'switch' when using the control register
- Use a single SHADER_OPCODE_RND_MODE opcode taking an immediate
with the rounding mode.
- Avoid magic numbers setting rounding mode field at control register.
v3: (Curro)
- Remove redundant and add missing whitespace lines.
- Match printing instruction to IR opcode "rnd_mode"
v4: (Topi Pohjolainen)
- Fix code style.
Signed-off-by: Alejandro Piñeiro <apinheiro@igalia.com>
Signed-off-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
The old code used an array to store each "instruction group" (the new,
better name than the old overloaded "annotation"), and required a
memmove() to shift elements over in the array when we needed to split a
group so that we could add an error message. This was confusing and
difficult to get right, not the least of which was because the array
has a tail sentinel not included in .ann_count.
Instead use a linked list, a data structure made for efficient
insertion.
Acked-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
I'm going to change the call in a later patch and with the difference in
indentation level it wasn't immediately obvious that the calls were
identical.
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The automatic exec size inference can accidentally mess things up if
we're not careful. For instance, if we have
add(4) g38.2<4>D g38.1<8,2,4>D g38.2<8,2,4>D
then the destination register will end up having a width of 2 with a
horizontal stride of 4 and a vertical stride of 8. The EU emit code
sees the width of 2 and decides that we really wanted an exec size of 2
which doesn't do what we wanted.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
The same workaround we need for 64-bit values on little core also takes
care of the Ivy Bridge problem and does so a bit more efficiently so we
can drop that code while we're here.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Cc: mesa-stable@lists.freedesktop.org
These restrictions effectively already existed due to the way we use
indirect sources but weren't being directly enforced.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Register strides higher than 4 are uncommon but they can happen. For
instance, if you have a 64-bit extract_u8 operation, we turn that into
UB -> UQ MOV with a source stride of 8. Our previous calculation would
try to generate a stride of <32;8,8>:ub which is invalid because the
maximum horizontal stride is 4. To solve this problem, we instead use a
stride of <8;1,0>. As noted in the comment, this does not work as a
destination but that's ok as very few things actually generate that
stride.
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Cc: mesa-stable@lists.freedesktop.org
The PRM says "The execution size must be 1." In 73137997e2, the
execution size was set to 1 when it should have been BRW_EXECUTE_1
(which maps to 0). Later, in dc2d3a7f5c, JMPI was used for
line AA on gen6 and earlier and we started manually stomping the
exeution size to BRW_EXECUTE_1 in the generator. This commit fixes the
original bug and makes brw_JMPI just do the right thing.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Fixes: 73137997e2
Align1 mode offers some nice features over align16, like access to more
data types and the ability to use a 16-bit immediate. This patch does
not start using any new features. It just emits ternary instructions in
align1 mode.
Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>
Allows the instructions to be compacted. The documentation claims that
some of these only accept UD types, even though the type doesn't change
the operation performed. Just normalize the types to ensure we get
instruction compaction.
The only functional changes are for FBL and CBIT (always use UD types)
and FBH (always use the same types).
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Render target surfaces always start at binding table index 0.
This is required for us to use headerless FB writes, which we
really want to do. So, we'll never change that.
Given that, it's not necessary to look up a wm_prog_data field
which we already know contains 0. We can drop the dependency in
brw_renderbuffer_surfaces (Gen4-5)...which was already confusingly
missing from gen6_renderbuffer_surfaces.
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
