Commit graph

80 commits

Author SHA1 Message Date
Jason Ekstrand
13f7ef5e0c util: Drop the ENUM_PACKED macro
We have both PACKED and ENUM_PACKED macros which expand to the same
thing.  PACKED was based on a meson check for function attributes while
ENUM_PACKED appears to be a legacy gallium thing which was based on
defined(__GCC__).  This changes the one use of ENUM_PACKED to PACKED and
deletes ENUM_PACKED.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20412>
2023-01-04 01:09:32 +00:00
Yonggang Luo
f70f20433b util: Rename PIPE_CDECL to UTIL_CDECL and moved into util/macros.h
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19918>
2022-11-24 06:21:39 +00:00
Yonggang Luo
b0203b5d47 util: Move EXCLUSIVE_CACHELINE and CACHE_LINE_SIZE macros into u_memory.h
They are coupled with MALLOC_STRUCT_CL,  so  move them into a single place and accessed consistently

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19918>
2022-11-24 06:21:39 +00:00
Yonggang Luo
af50f6a490 util: Remove EXPLICIT_CONVERSION macro and use c++11 explicit directly
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: David Heidelberg <david.heidelberg@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19895>
2022-11-22 15:42:15 +08:00
Jesse Natalie
efe5b9163e meson: Enable initialized-but-unused warning for MSVC
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19792>
2022-11-17 21:20:38 +00:00
Matt Coster
9991926bdf util: Add common CONCAT/PASTE macros
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16945>
2022-11-15 11:54:42 +00:00
Yonggang Luo
f6ed016fe9 util: Replace the usage of ALIGN16 with alignas(16) and them remove ALIGN16 macro
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19565>
2022-11-10 05:04:12 +00:00
Thomas H.P. Andersen
1980827aeb util: avoid deprecated builtin has_trivial_destructor
From clang 16 has_trivial_destructor is deprecated.
Use the replacement __is_trivially_destructible if it
is available.

Fixes new warnings with clang 16 like:

../src/compiler/glsl/list.h:58:4: warning: builtin __has_trivial_destructor is deprecated; use __is_trivially_destructible instead [-Wdeprecated-builtins]
../src/util/ralloc.h:551:4: note: expanded from macro 'DECLARE_RZALLOC_CXX_OPERATORS'
   DECLARE_ALLOC_CXX_OPERATORS_TEMPLATE(type, rzalloc_size)
   ^
../src/util/ralloc.h:542:12: note: expanded from macro 'DECLARE_ALLOC_CXX_OPERATORS_TEMPLATE'
      if (!HAS_TRIVIAL_DESTRUCTOR(TYPE))                                 \
           ^
../src/util/macros.h:233:44: note: expanded from macro 'HAS_TRIVIAL_DESTRUCTOR'

Reviewed-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18423>
2022-09-08 10:53:32 +00:00
Matt Coster
c0b891ecca util: Include stddef.h in util/macros.h
This is required for offsetof, used by the container_of macro.

Signed-off-by: Matt Coster <matt.coster@imgtec.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18368>
2022-09-03 17:09:37 +00:00
Yonggang Luo
1f05b23b4f util: Disable usage of __attribute__((__const__)) when the compiler is clang
Clang didn't implement __attribute__((__const__)) properly for release build.
The issue tracker is: https://github.com/llvm/llvm-project/issues/56993

Closes #6781
Closes #6782

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18039>
2022-08-12 18:33:24 +00:00
Mark Janes
b15d0a11a4 util: define helpful macros for compiler diagnostic features
Suggested-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17749>
2022-07-29 20:45:25 +00:00
Erik Faye-Lund
e3bc78b8e3 util: use c11 alignas instead of rolling our own
Due to how alignas is defined, it itsn't allowed to use it on a struct,
it needs to be used on the first member instead. So move the declaration
in those cases.

This still leaves the ALIGN16 macro using compiler-specific directives,
because it's a lot of work to untangle the above. This probably deserves
its own MR.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16908>
2022-06-14 15:08:37 +00:00
Erik Faye-Lund
3a62badb2e util: use c11 alignof instead of our own
...with an exception for MSVC, which doesn't have stdalign.h, so let's
add a definition for that.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16908>
2022-06-14 15:08:37 +00:00
Erik Faye-Lund
45fb815a75 util: implement STATIC_ASSERT using c++11 / c11 primitives
Since we now require C11 and C++14, we can use the standard
static_asserts from the standard library instead of rolling our own
compiler-specific versions.

To avoid needing scopes around usage in switch cases, keep the
while-wrapping from before. This means it still can't be used outside of
functions, but that should be fine; we should probably just use
static_assert directly in those cases anyway.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16670>
2022-06-03 07:14:43 +00:00
Erik Faye-Lund
f1023571e8 util: use static_assert directly
For some reason, Clang doesn't love the STATIC_ASSERT implementation
we're about switch to in this *one* particular case. Other cases seems
to work fine, so let's just use static_assert directly here.

It lets us give a better error string anyway, so yay.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16670>
2022-06-03 07:14:43 +00:00
Erik Faye-Lund
9ecb6f8820 util: add IS_POT macro
This macro kinda complements util_is_power_of_two_*, but is implemented
as a macro. This means that it can expand to a constant integral
expression, and thus be used in static_assert.

Because we don't really need the added complexity, this doesn't handle
zero correctly. But that's OK, because the call-sites will.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16670>
2022-06-03 07:14:43 +00:00
Erik Faye-Lund
df2dd474c7 include: drop c11_compat.h
We now require C11, and C++ supports static_assert just fine, which is
the only thing this header ever added support for. So let's get rid of
this needless header.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16812>
2022-06-02 13:09:16 +00:00
Erik Faye-Lund
9f717b5f23 util: remove needless c99_compat.h includes
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16812>
2022-06-02 13:09:16 +00:00
Yonggang Luo
cc10c53333 nir: Fixes MSVC compiling error about unused variable _
Fixes: 836470d433 ("nir: allow NIR_PASS(_, )")

MSVC compiling error:
```
nir/nir_lower_shader_calls.c
../mesa/src/compiler/nir/nir_lower_shader_calls.c(1188): error C2220: the following warning is treated as an error
../mesa/src/compiler/nir/nir_lower_shader_calls.c(1188): warning C4101: '_': unreferenced local variable
../mesa/src/compiler/nir/nir_lower_shader_calls.c(1190): warning C4101: '_': unreferenced local variable
```

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16666>
2022-05-23 14:45:48 +00:00
Yonggang Luo
be1b30393b util: Getting u_debug.h not depends on pipe/*
Move pipe_debug_type into u_debug.h
Move pipe_debug_callback into u_debug.h

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15657>
2022-04-01 01:52:43 +00:00
Yonggang Luo
b2ece67f11 util: Rename PIPE_DEBUG_TYPE to UTIL_DEBUG_TYPE
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15657>
2022-04-01 01:52:43 +00:00
Yonggang Luo
ab225a1e36 util: Rename pipe_debug_type to util_debug_type
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15657>
2022-04-01 01:52:43 +00:00
Marek Olšák
8c6e18bc51 util,gallium: put count in pipe_resource & sampler_view on its own cache line
This adds 60 bytes to both structures. It eliminates "False Sharing"
for atomic operations (see wikipedia).

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11618>
2021-10-13 03:26:20 +00:00
Marek Olšák
8886bf9a47 gallium: use a packed enum to make pipe_prim_mode 1-byte large with __GNUC__
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12480>
2021-08-24 10:43:44 -04:00
Ian Romanick
72259a870f util: Add and use functions to calculate min and max int for a size
Many places need to know the maximum or minimum possible value for a
given size integer... so everyone just open-codes their favorite
version.  There is some potential to hit either undefined or
implementation-defined behavior, so having one version that Just Works
seems beneficial.

v2: Fix copy-and-pasted bug (INT64_MAX instead of INT64_MIN) in
u_intmin.  Noticed by CI.  Lol.  Rename functions
`s/u_(uint|int)(min|max)/u_\1N_\2/g`.  Suggested by Jason.  Add some
unit tests that would have caught the copy-and-paste bug before wasting
CI time.  Change the implementation of u_intN_min to use the same
pattern as stdint.h.  This avoids the integer division.  Noticed by
Jason.

v3: Add changes to convert_clear_color
(src/gallium/drivers/iris/iris_clear.c).  Suggested by Nanley.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Suggested-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12177>
2021-08-03 12:55:02 -07:00
Kristian Høgsberg
0d5fe24c9b macros: Add thread-safety annotation macros
Extracted from !7529

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9061>
2021-02-18 00:27:49 +00:00
Rob Clark
790144e65a util+treewide: container_of() cleanup
Replace mesa's slightly different container_of() with one more aligned
to the linux kernel's version which takes a type as the 2nd param.  This
avoids warnings like:

  freedreno_context.c:396:44: warning: variable 'batch' is uninitialized when used within its own initialization [-Wuninitialized]

At the same time, we can add additional build-time type-checking asserts

Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7941>
2020-12-10 16:48:36 +00:00
Rob Clark
6fe84c5dda util: Allow STATIC_ASSERT() everywhere
Remove -Werror=vla from c_msvc_compat_args so we can use STATIC_ASSERT()
in core code.  We have a CI job for this.

(And arguably we could probably just drop c_msvc_compat_args entirely.)

Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7941>
2020-12-10 16:48:36 +00:00
Rob Clark
5a082911cd util: Promote __builtin_types_compatible_p compat
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7941>
2020-12-10 16:48:36 +00:00
Michel Zou
89b01cc025 util: fix mingw format-extra-args warning
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7713>
2020-12-01 16:51:01 +00:00
Marek Olšák
9c84ca574d util: add a common ALIGN16 macro for m_matrix and u_threaded_context
to prevent conflicts in the next commit

Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6946>
2020-12-01 11:52:10 +00:00
Michel Zou
0e7d45c89a util: use dllexport for mingw too
Acked-by: Jose Fonseca <jfonsec@vmware.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7341>
2020-10-27 21:05:55 +00:00
Rhys Perry
391eeb7443 util: add a alignof() macro
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6206>
2020-08-20 10:52:19 +00:00
Jesse Natalie
65d7172d17 util/macros: Add ATTRIBUTE_NOINLINE definition for MSVC
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6303>
2020-08-13 23:18:36 +00:00
Alyssa Rosenzweig
35938c15e2 util: Add SATURATE macro
Equivalent to clamp(x, 0.0, 1.0) or fsat in NIR. Useful for format
packing, among other uses given the variety of substituions in-tree.

v2: Drop brackets (Eric).

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5100>
2020-05-26 22:31:31 +00:00
Marek Olšák
7164674500 util: don't include p_defines.h and u_pointer.h from gallium
It's a mess, but this is what I arrived at.

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4324>
2020-03-27 21:00:10 +00:00
Krzysztof Raszkowski
8be51061ec util: Add unreachable() definition for clang compiler.
Without unreachable() definition clang throw return-type error
in many places in mesa code.

Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
2019-08-30 05:50:21 +00:00
Eric Engestrom
9668d7f539 introduce c11_compat.h to provide C11 things in C99
Right now, all it does is provide the new standard `static_assert()` name.

Fixes: fbf7c38da3 ("egl/wayland: use bitset.h for `formats` bit set")
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Tested-by: Bhushan Shah <bshah@kde.org>
2019-08-04 11:14:25 +01:00
Eric Engestrom
abc226cf41 tree-wide: replace MAYBE_UNUSED with ASSERTED
Suggested-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2019-07-31 09:41:05 +01:00
Christian Gmeiner
f39a7fd627 util/macros: rework DIV_ROUND_UP macro
Simplify used math.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
2019-07-04 10:21:32 +02:00
Timothy Arceri
d0abbaa528 util: move BITFIELD macros to util/macros.h
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2019-02-08 02:54:56 +00:00
Jose Fonseca
52ca32121b Require Visual Studio 2015.
We no longer need or use Visual Studio 2013.

https://ci.appveyor.com/project/jrfonseca/mesa/build/52

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
2018-09-10 10:10:16 +01:00
Jason Ekstrand
70b16963fc util/macros: Import ALIGN_POT from ralloc.c
v2 (Jason Ekstrand):
 - Rename y to pot_align (Brian)
 - Also use ALIGN_POT in build_id.c and slab.c (Brian)

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2018-07-02 12:09:14 -07:00
Francisco Jerez
8d1f1ce412 util: Add EXPLICIT_CONVERSION macro.
This can be used to specify that a C++ conversion operator is not
meant to be used for implicit conversions, which can lead to
unintended loss of information in some cases.  Implemented as a macro
in order to keep old GCC versions happy.

Reviewed-by: Plamena Manolova <plamena.manolova@intel.com>
2018-02-24 15:28:36 -08:00
Vlad Golovkin
d919ff0f27 util: remove redundant check for the __clang__ macro
Clang defines __GNUC__ macro, so one doesn't need to check __clang__
macro in this particular case.

v2: added comment as per Brian Paul's suggestion

Reviewed-by: Brian Paul <brianp@vmware.com>
2018-02-06 15:23:26 -07:00
Roland Scheidegger
85377dc55c util: fix NORETURN for msvc, add HAVE_FUNC_ATTRIBUTE_NORETURN to c99_compat.h
We've seen some problems internally due to macro redefinition.
Fix this by adding HAVE_FUNC_ATTRIBUTE_NORETURN to c99_compat.h,
and defining it for msvc.
And avoid redefinition just in case.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
2018-01-12 02:52:10 +01:00
Jason Ekstrand
0c49aa0624 util: Add a NORETURN macro
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <idr@freedesktop.org>
2017-12-04 09:21:09 -08:00
Brian Paul
fe81e1f975 util: add new ASSERT_BITFIELD_SIZE() macro (v3)
For checking that bitfields are large enough to hold the largest
expected value.

v2: move into existing util/macros.h header where STATIC_ASSERT() lives.
v3: add MAYBE_UNUSED to variable declaration

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2017-11-16 20:35:17 -07:00
Emil Velikov
c9ec28b1c0 util: use cannonical form of ARRAY_SIZE
Namely sizeof(foo)/sizeof((foo)[0])

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
2017-08-02 20:43:33 +01:00
Kenneth Graunke
2412c4c81e util: Make CLAMP turn NaN into MIN.
The previous implementation of CLAMP() allowed NaN to pass through
unscathed, by failing both comparisons.  NaN isn't exactly a value
between MIN and MAX, which can break the assumptions of many callers.

This patch changes CLAMP to convert NaN to MIN, arbitrarily.  Callers
that need NaN to be handled in a specific manner should probably open
code something, or use a macro specifically designed to do that.

Section 2.3.4.1 of the OpenGL 4.5 spec says:

   "Any representable floating-point value is legal as input to a GL
    command that requires floating-point data. The result of providing a
    value that is not a floating-point number to such a command is
    unspecified, but must not lead to GL interruption or termination.
    In IEEE arithmetic, for example, providing a negative zero or a
    denormalized number to a GL command yields predictable results,
    while providing a NaN or an infinity yields unspecified results."

While CLAMP may apply to more than just GL inputs, it seems reasonable
to follow those rules, and allow MIN as an "unspecified result".

This prevents assertion failures in i965 when running the games
"XCOM: Enemy Unknown" and "XCOM: Enemy Within", which call

   glTexEnv(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT,
            -nan(0x7ffff3));

presumably unintentionally.  i965 clamps the LOD bias to be in range,
and asserts that it's in the proper range when converting to fixed
point.  NaN is not, so it crashed.  We'd like to at least avoid that.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2017-07-18 23:48:46 -07:00