Commit graph

123203 commits

Author SHA1 Message Date
Roman Stratiienko
f699bb42af panfrost: Align Android makefiles with recent changes
Signed-off-by: Roman Stratiienko <roman.stratiienko@nure.ua>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4634>
2020-04-22 00:27:15 +00:00
Eric Anholt
2f4a3c1ca0 freedreno/ir3: Drop handling FRAG_RESULT_DEPTH writing to .z
Since we consume NIR, we get FRAG_RESULT_DEPTH in .x.  Something must have
been working out for this code to not be trying to get an undefined value,
but go ahead and drop it now.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4668>
2020-04-21 23:30:53 +00:00
Jonathan Marek
eab73799d1 turnip: fix GMEM resolve in CmdNextSubpass
The BLIT scissor must be set correctly for tu_store_gmem_attachment.

Fixes this deqp test:

dEQP-VK.pipeline.multisample_shader_builtin.sample_id.137_191_1.samples

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4666>
2020-04-21 23:04:34 +00:00
Andres Gomez
e4521aeafc gitlab-ci: adapt query_traces_yaml to gitlab specific changes
This change was missing after acf7e73be5 "(gitlab-ci: make explicit
tracie is gitlab specific)".

Fixes: acf7e73be5 "(gitlab-ci: make explicit tracie is gitlab specific)".
Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Rohan Garg <rohan.garg@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4638>
2020-04-22 01:37:21 +03:00
Emil Velikov
0a884d7304 egl: simplify client/platform extension handling
For GLVND reasons the client/platform extensions strings should be
split. While in the non GLVND case they're one big string.

Currently we handle this distinction at run-time for not obvious reason.
Adding additional code and complexity.

Swap those with a few well placed #if USE_LIBGLVND guards.

As a side result this removes a minor memory leak due to the
concatenation in the non GLVND case.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4491>
2020-04-21 22:20:24 +00:00
Erik Faye-Lund
013d9e40fe mesa/gallium: do not use enum for bit-allocated member
The signedness of enums are undefined, so on platforms with signed
enums, this isn't going to work. One such platform is Microsoft Windows.

So let's just use an unsigned here instead.

Fixes: b1c4c4c7f5 ("mesa/gallium: automatically lower alpha-testing")
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4648>
2020-04-21 21:56:21 +00:00
Jesse Natalie
a842dc154d util/ralloc: fix ralloc alignment on Win64
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4648>
2020-04-21 21:56:21 +00:00
Kenneth Graunke
b7c47c4f7c intel/compiler: Drop nir_lower_to_source_mods() and related handling.
I think we're unanimous in wanting to drop nir_lower_to_source_mods.
It's a bit of complexity to handle in the backend, but perhaps more
importantly, would be even more complexity to handle in nir_search.

And, it turns out that since we made other compiler improvements in the
last few years, they no longer appear to buy us anything of value.
Summarizing the results from shader-db from this patch:

 - Icelake (scalar mode)

   Instruction counts:

   - 411 helped, 598 hurt (out of 139,470 shaders)
   - 99.2% of shaders remain unaffected.  The average increase in
     instruction count in hurt programs is 1.78 instructions.
   - total instructions in shared programs: 17214951 -> 17215206 (<.01%)
   - instructions in affected programs: 1143879 -> 1144134 (0.02%)

   Cycles:

   - 1042 helped, 1357 hurt
   - total cycles in shared programs: 365613294 -> 365882263 (0.07%)
   - cycles in affected programs: 138155497 -> 138424466 (0.19%)

 - Haswell (both scalar and vector modes)

   Instruction counts:

   - 73 helped, 1680 hurt (out of 139,470 shaders)
   - 98.7% of shaders remain unaffected.  The average increase in
     instruction count in hurt programs is 1.9 instructions.
   - total instructions in shared programs: 14199527 -> 14202262 (0.02%)
   - instructions in affected programs: 446499 -> 449234 (0.61%)

   Cycles:

   - 5253 helped, 5559 hurt
   - total cycles in shared programs: 359996545 -> 360038731 (0.01%)
   - cycles in affected programs: 155897127 -> 155939313 (0.03%)

Given that ~99% of shader-db remains unaffected, and the affected
programs are hurt by about 1-2 instructions - which are all cheap
ALU instructions - this is unlikely to be measurable in terms of
any real performance impact that would affect users.

So, drop them and simplify the backend, and hopefully enable other
future simplifications in NIR.

Reviewed-by: Eric Anholt <eric@anholt.net> [v1]
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4616>
2020-04-21 21:42:21 +00:00
Dylan Baker
fdd0ce12ac meson: update llvm dependency logic for meson 0.54.0
In meson 0.54.0 I fixed the llvm cmake dependency to return "not found"
if shared linking is requested. This means that for 0.54.0 and later we
don't need to do anything, and for earlier versions we only need to
change the logic to force the config-tool method if shared linking is
required.

Fixes: 821cf6942a
       ("meson: Use cmake to find LLVM when building for window")

Acked-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4556>
2020-04-21 20:55:12 +00:00
Dylan Baker
8e3696137f remove final imports.h and imports.c bits
This moves the fi_types to a new mesa_private.h and removes the
imports.c file. The vast majority of this patch is just removing
pound includes of imports.h and fixing up the recursive includes.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:04 -07:00
Dylan Baker
289f02d1d5 dri/nouveau: replace assert with unreachable
I don't know why removing imports.h suddenly makes clang realize that
this function can not return in a non-debug build, but it does.
Unreachable is better because it doesn't have this problem.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
c3db0936ef mesa: move ADD_POINTERS to macros.h
I'm not really sure where else to put it. Since imports.h only has two
things left in it (neither of which are abstractions for smoothing away
libc differences) I'd like to get them out of there. macros.h is the
only place I can think of to put this macro.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
bf188f3494 mesa|mapi: replace _mesa_[v]snprintf with [v]snprintf
MSVC 2015 and newer has perfectly valid snprintf and vsnprintf
implementations, let's just use those.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
c495c3af26 replace imports memory functions with utils memory functions
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
bb560f2d65 util: Add an aligned realloc function
Mesa has one of these in imports.h, so u_memory needs one as well. This
is the version from mesa ported.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
b85775900d replace malloc macros in imports.h with u_memory.h versions
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
9ee6e78a87 Replace IS_INF_OR_NAN with util_is_inf_or_nan
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
369f002591 move windows strtok_r define to u_string
This makes more sense for it, it's only used in the glsl compiler
currently, so we could probably move it there, but this seems fine for a
header only #define.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
53c36dfcfe replace IROUND with util functions
This adds two new util functions to rounding.h, _mesa_iroundf and
mesa_lround, which are just wrappers around roundf and round, that cast
to int and long int respectively. This is possible since mesa recently
dropped support for VC2013, since 2015 and 2017 support roundf.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
df3ce8fb77 mesa/main: remove unused IROUNDD
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
64014c8302 Replace IROUND_POS with _mesa_roundevenf
Which has the same behavior as long as you don't change the FPU rounding
mode. Other code in mesa makes the same assumption so it should be safe
to make that assumption more generally.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
9d9a2819ee replace IFLOOR with util_ifloor
which are exactly the same function with exactly the same implementation

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
72acb66527 u_math: add x86 optimized version of ifloor
This is copied from the one in src/mesa/main/imports.h, which is the
same otherwise.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
bd4e769515 replace LOG2 with util_fast_log2
The implementation is somewhat different, although if you go back in
time far enough they're the same, but the one in u_math was changed a
long time back to be faster.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
f8e4542bad replace _mesa_logbase2 with util_logbase2
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
e190e8cef2 replace _mesa_next_pow_two_* with util_next_power_of_two_*
The 64 bit variant in imports.h isn't even used.

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Dylan Baker
e533fad182 replace _mesa_is_pow_two with util_is_power_of_two_*
Mostly this uses util_is_power_of_two_or_zero, which has the same
behavior as _mesa_is_pow_two when the input is zero. In cases where the
value is known to be != 0 ahead of time I used the _nonzero variant as
it may be faster on some platforms.

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>
2020-04-21 11:09:03 -07:00
Eric Anholt
c1e7c1f422 freedreno/drm-shim: Add support for faking other adreno chips.
I wanted to look at the effect of a core NIR change on a2xx codegen, but I
don't have any of those boards.  This could also prove useful for quickly
sanity-checking the compiler by running shader-db on it -- a2xx fails in a
few ways on glmark2, and a3xx-a5xx fails on glmark2 in a debug_assert
(which we don't have enabled in our dEQP runs).

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4652>
2020-04-21 15:47:39 +00:00
Gert Wollny
cc23920746 r600/sfn: use new temp register allocation when loading single value temporaries
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
50b66622f1 r600/sfn: Count only literals that are not inline to split instruction groups
An instruction group can only support 4 distinct literals, but inline
constants count into this number, so skip them when counting.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
9c7ce4d76e r600/sfn: Fix using the result of a fetch instruction in next fetch
The result of a fetch instruction can't be used as source in the same CF
block, so force a new CF block when the result would be used in the same
vertex fetch block.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
67495ff9aa r600/sfn: Fix handling of GS inputs
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
58d6cda5f5 r600/sfn: Handle b2b1 like it was a mov
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
de7ea88ff8 r600/sfn: Fix null pointer deref in live range evalation
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
5d10e3ec60 r600/nir: Pin interpolation results to channel
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
5e036fef1f r600/sfn: Implementing instructions blocks
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
b51ced7306 r600/sfn: Fix setting alignments when lowering UBOs
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
bc9cf6adff r600/sfn: Reduce array limit for scratch usage
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Gert Wollny
6fdc75d1c6 r600: Dump a few more variables when requested
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4609>
2020-04-21 15:10:43 +00:00
Abhishek Kumar
f06e4ab319 anv/android: fix assert in anv_import_ahw_memory
Commit fixes assert that triggers when running
   dEQP-VK.api.external.memory.android_hardware_buffer.dedicated.buffer#bind_export_import_bind

on a debug build of Mesa.

Fixes: c79a528d ("anv/android: support import/export of AHardwareBuffer objects")
Signed-off-by: Abhishek Kumar <abhishek4.kumar@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4655>
2020-04-21 11:50:15 +00:00
Danylo Piliaiev
829013d0ca st/mesa: Re-assign vs in locations after updating nir info for ffvp/ARB_vp
After call to nir_shader_gather_info - inputs_read may have changed so
st_nir_assign_vs_in_locations should be called for shader to remain in
sync with vbo state.

Fixes piglit tests:
  gl-1.0-fpexceptions
  gl-1.1-color-material-unused-normal-array
  arb_vertex_program-unused-attributes
regression on several gallium drivers.

Fixes: d684fb37bf
Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4645>
2020-04-21 11:16:41 +00:00
Connor Abbott
ae169f38ce tu: Fix the advertised maxFragmentInputComponents
This appears to be limited by VPC_CNTL_0::NUMNONPOSVAR, which is an
8-bit bitfield with no possibility for expansion. Also, in practice
we'll be limited by the vertex shader output maximum, which includes
gl_Position, of 128, so that users won't be able to use more than 124
components anyways. Lower it to match the GL blob.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4641>
2020-04-21 10:04:13 +00:00
Connor Abbott
45ec9c0f3d freedreno/a6xx: Expand various varying-count bitfields
The extra bit needs to be used when using the maximum of 128 varying
components. I confirmed that PC_PRIMITIVE_CNTL_1 and SP_PRIMITIVE_CNTL
are expanded using a trace of the Vulkan blob with the maximum number of
varyings, and changed the others by analogy.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4641>
2020-04-21 10:04:13 +00:00
Erik Faye-Lund
d29fea77b9 docs: remove outdated sentence
The releasing documentation no longer contains this step, so this seems
out of date. The anchor for this link is also removed, making it point
nowhere.

Fixes: d4cb9ef826 ("docs: Update release notes with current process")
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4654>
2020-04-21 09:49:22 +00:00
Pierre-Eric Pelloux-Prayer
56f174d14e st/omx: fix gcc warnings
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4584>
2020-04-21 09:16:28 +02:00
Pierre-Eric Pelloux-Prayer
07071cac7b gallium/utils: silence strncpy warning
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4584>
2020-04-21 09:16:26 +02:00
Pierre-Eric Pelloux-Prayer
dbfeec62c3 mesa: fix crash in find_value
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4584>
2020-04-21 09:16:18 +02:00
Jason Ekstrand
7c43b8ce1b nir: Delete the fnoise opcodes
As of the previous commit, they are never used.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4624>
2020-04-21 06:16:13 +00:00
Jason Ekstrand
4386c06770 glsl: Hard-code noise to zero in builtin_functions.cpp
Version 4.4 of the GLSL spec changed the definition of noise*() to
always return zero and earlier versions of the spec allowed zero as a
valid implementation.

All drivers, as far as I can tell, unconditionally call lower_noise()
today which turns ir_unop_noise into zero.  We've got a 10-year-old
comment in there saying "In the future, ir_unop_noise may be replaced by
a call to a function that implements noise."  Well, it's the future now
and we've not yet gotten around to that.  In the mean time, the GLSL
spec has made doing so illegal.

To make things worse, we then pretend to handle the opcode in
glsl_to_nir, ir_to_mesa, and st_glsl_to_tgsi even though it should never
get there given the lowering.  The lowering in st_glsl_to_tgsi defines
noise*() to be 0.5 which is an illegal implementation of the noise
functions according to pre-4.4 specs.  We also have opcodes for this in
NIR which are never used because, again, we always call lower_noise().

Let's just kill the whole opcode and make builtin_builder.cpp build a
bunch of functions that just return zero.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4624>
2020-04-21 06:16:13 +00:00
Timothy Arceri
95f555a93a st/glsl_to_nir: make use of nir linker for linking uniforms
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4395>
2020-04-21 01:57:34 +00:00