| Commit message (Collapse) | Author | Age | Files | Lines |
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Reviewed-by: Timothy Arceri <[email protected]>
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The functions are also useful for mesa.
Introduce src/util/bitscan.{h,c}. Move ffs function
implementations from src/mesa/main/imports.{h,c}.
Move bit scan related functions from
src/gallium/auxiliary/util/u_math.h. Merge platform
handling with what is available from within mesa.
v2: Try to fix MSVC compile.
Reviewed-by: Brian Paul <[email protected]>
Tested-by: Brian Paul <[email protected]>
Signed-off-by: Mathias Fröhlich <[email protected]>
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Reviewed-by: Eric Engestrom <[email protected]>
Reviewed-by: Roland Scheidegger <[email protected]>
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We already use these for gallium in
src/gallium/auxiliary/os/os_memory_stdc.h and it's always better to
minimize divergences between MinGW and MSVC.
Reviewed-by: Brian Paul <[email protected]>
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Needed in NIR too, so move out of mesa/main/imports.c
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Signed-off-by: Rob Clark <[email protected]>
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Eric's initial patch adding constant expression evaluation for
ir_unop_round_even used nearbyint. The open-coded _mesa_round_to_even
implementation came about without much explanation after a reviewer
asked whether nearbyint depended on the application not modifying the
rounding mode. Of course (as Eric commented) we rely on the application
not changing the rounding mode from its default (round-to-nearest) in
many other places, including the IROUND function used by
_mesa_round_to_even!
Worse, IROUND() is implemented using the trunc(x + 0.5) trick which
fails for x = nextafterf(0.5, 0.0).
Still worse, _mesa_round_to_even unexpectedly returns an int. I suspect
that could cause problems when rounding large integral values not
representable as an int in ir_constant_expression.cpp's
ir_unop_round_even evaluation. Its use of _mesa_round_to_even is clearly
broken for doubles (as noted during review).
The constant expression evaluation code for the packing built-in
functions also mistakenly assumed that _mesa_round_to_even returned a
float, as can be seen by the cast through a signed integer type to an
unsigned (since negative float -> unsigned conversions are undefined).
rint() and nearbyint() implement the round-half-to-even behavior we want
when the rounding mode is set to the default round-to-nearest. The only
difference between them is that nearbyint() raises the inexact
exception.
This patch implements _mesa_roundeven{f,}, a function similar to the
roundeven function added by a yet unimplemented technical specification
(ISO/IEC TS 18661-1:2014), with a small difference in behavior -- we
don't bother raising the inexact exception, which I don't think we care
about anyway.
At least recent Intel CPUs can quickly change a subset of the bits in
the x87 floating-point control register, but the exception mask bits are
not included. rint() does not need to change these bits, but nearbyint()
does (twice: save old, set new, and restore old) in order to raise the
inexact exception, which would incur some penalty.
Reviewed-by: Carl Worth <[email protected]>
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We were already using strdup() in various places in Mesa. Get rid
of the _mesa_strdup() wrapper. All the callers pass a non-NULL
argument so the NULL check isn't needed either.
Reviewed-by: Jose Fonseca <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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Instead of relying on glapi.h or some other header to provide it.
Acked-by: Matt Turner <[email protected]>
Reviewed-by: José Fonseca <[email protected]>
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Not needed by anything in that header. Include math.h or c99_math.h
where needed instead.
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Jose Fonseca <[email protected]>
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Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Jose Fonseca <[email protected]>
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Acked-by: Eric Anholt <[email protected]>
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warning.
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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See commit 2b7a972e for the Coccinelle script.
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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Both core mesa and glsl have their own wrappers for strtof_l. Merge
and move them to util/. They are compiled with a C++ compiler so that
we can make them thread-safe in a following commit.
Signed-off-by: Chia-I Wu <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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Presumbly this will let clang and other compilers use the built-ins as
well.
Notice two changes specifically:
- in _mesa_next_pow_two_64(), always use __builtin_clzll and add a
static assertion that this is safe.
- in macros.h, remove the clang-specific definition since it should
be able to detect __builtin_unreachable in configure.
Reviewed-by: Jason Ekstrand <[email protected]> [C bits]
Reviewed-by: Ian Romanick <[email protected]>
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Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Jose Fonseca <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
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Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Jose Fonseca <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
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Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Jose Fonseca <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
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Inexplicably added in commit 36940429.
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Jose Fonseca <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
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Reviewed-by: Ian Romanick <[email protected]>
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So that it acts like ordinary free(). This lets us remove a bunch of
if statements where the function is called.
v2:
- Avoiding compile error on MSVC and possible warnings on other compilers.
- Added comment regards passing NULL pointer being safe.
Reviewed-by: Brian Paul <[email protected]>
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Fixes this build error.
CC imports.lo
../../src/mesa/main/imports.c: In function '_mesa_strtof':
../../src/mesa/main/imports.c:570:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'loc'
../../src/mesa/main/imports.c:570:20: error: 'loc' undeclared (first use in this function)
../../src/mesa/main/imports.c:570:20: note: each undeclared identifier is reported only once for each function it appears in
../../src/mesa/main/imports.c:572:7: error: implicit declaration of function 'newlocale'
../../src/mesa/main/imports.c:572:23: error: 'LC_CTYPE_MASK' undeclared (first use in this function)
../../src/mesa/main/imports.c:574:4: error: implicit declaration of function 'strtof_l'
../../src/mesa/main/imports.c:580:1: warning: control reaches end of non-void function
Signed-off-by: Vinson Lee <[email protected]>
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Signed-off-by: Brian Paul <[email protected]>
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The previous commit introduced extra words, breaking the formatting.
This text transformation was done automatically via the following shell
command:
$ git grep 'THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY' | sed 's/:.*$//' | xargs -I {} sh -c 'vim -e -s {} < vimscript
where 'vimscript' is a file containing:
/THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY/;/\*\// !fmt -w 78 -p ' * '
:wq
Reviewed-by: Brian Paul <[email protected]>
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This brings the license text in line with the MIT License as published
on the Open Source Initiative website:
http://opensource.org/licenses/mit-license.php
Generated automatically be the following shell command:
$ git grep 'THE AUTHORS BE LIABLE' | sed 's/:.*$//g' | xargs -I '{}' \
sed -i 's/THE AUTHORS/THE AUTHORS OR COPYRIGHT HOLDERS/' {}
This introduces some wrapping issues, to be fixed in the next commit.
Reviewed-by: Brian Paul <[email protected]>
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Generated automatically be the following shell command:
$ git grep 'BRIAN PAUL BE LIABLE' | sed 's/:.*$//g' | xargs -I '{}' \
sed -i 's/BRIAN PAUL/THE AUTHORS/' {}
The intention here is to protect all authors, not just Brian Paul. I
believe that was already the sensible interpretation, but spelling it
out is probably better.
More practically, it also prevents people from accidentally copy &
pasting the license into a new file which says Brian is not liable when
he isn't even one of the authors.
Reviewed-by: Brian Paul <[email protected]>
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Not all float32 values can be exactly represented as a float16.
_mesa_float_to_half() rounded such intermediate float32 values to zero by
truncating unrepresentable bits in the mantissa.
This patch improves _mesa_float_to_half() by rounding intermediate float32
values to the nearest float16; when the float32 is exactly between two
float16 values we round to the one with an even mantissa. This behavior is
preferred over the old behavior because:
- It has reduced bias relative to the old behavior.
- It reproduces the behavior of real hardware: opcode F32TO16 in
Intel's GPU ISA.
- By reproducing the behavior of the GPU (at least on Intel hardware),
compile-time evaluation of constant packHalf2x16 GLSL expressions will
result in the same value as if the expression were executed on the GPU.
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
Signed-off-by: Chad Versace <[email protected]>
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Move round_to_even's definition to mesa/main so that _mesa_float_to_half()
can use it in order to eliminate rounding bias.
In additon to moving the fuction definition, prefix its name with "_mesa",
just as all other functions in mesa/main are prefixed.
v2: Fix Android build.
Reviewed-by: Ian Romanick <[email protected]>
Signed-off-by: Chad Versace <[email protected]>
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Not maintained since 2008. Doubtful that it's worked in quite a while.
Also see commit 32ac8cb05 which removed VMS stuff from Makefile in 2009.
Cc: Jouk Jansen <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Signed-off-by: Andreas Boll <[email protected]>
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This patch has been generated by the following Coccinelle semantic
patch:
// Remove useless checks for NULL before freeing
//
// free (NULL) is a no-op, so there is no need to avoid it
@@
expression E;
@@
+ free (E);
+ E = NULL;
- if (unlikely (E != NULL)) {
- free(E);
(
- E = NULL;
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- E = 0;
)
...
- }
@@
expression E;
type T;
@@
+ free ((T) E);
+ E = NULL;
- if (unlikely (E != NULL)) {
- free((T) E);
(
- E = NULL;
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- E = 0;
)
...
- }
@@
expression E;
@@
+ free (E);
- if (unlikely (E != NULL)) {
- free (E);
- }
@@
expression E;
type T;
@@
+ free ((T) E);
- if (unlikely (E != NULL)) {
- free ((T) E);
- }
Reviewed-by: Brian Paul <[email protected]>
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This patch has been generated by the following Coccinelle semantic
patch:
// Don't cast the return value of malloc/realloc.
//
// Casting the return value of malloc/realloc only stands to hide
// errors.
@@
type T;
expression E1, E2;
@@
- (T)
(
_mesa_align_calloc(E1, E2)
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_mesa_align_malloc(E1, E2)
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calloc(E1, E2)
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malloc(E1)
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realloc(E1, E2)
)
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The correct predefined macro for Windows is _WIN32, not WIN32 or
__WIN32__. _WIN32 is defined for 32-bit and 64-bit version of Windows
by both MSVC and MinGW compilers.
http://sourceforge.net/p/predef/wiki/OperatingSystems
http://msdn.microsoft.com/en-us/library/b0084kay.aspx
This patch also fixes a MinGW automake build error.
Signed-off-by: Vinson Lee <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
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Mesa misses a few checks when compiling on a uclibc system
which cause it to fall back on glibc-ism. This patch
addresses those issues.
Acked-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Signed-off-by: Anthony G. Basile <[email protected]>
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Unused since commit fd104a845.
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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Except for a couple of explicit uses, _mesa_inv_sqrtf was disabled since
its addition in 2003 (see f9b1e524).
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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Temporarily disabled since 2003 (see 386578c5b).
This saves us from calling sqrt() 128 times to generate the sqrttab in
one_time_init().
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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Also add _mesa_vsnprintf.
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NOTE: This is a candidate for the 8.0 branch.
Signed-off-by: Brian Paul <[email protected]>
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Call ffs() and ffsll() everywhere. Define our own ffs(), ffsll()
functions when the platform doesn't have them.
v2: remove #ifdef _WIN32, __IBMC__, __IBMCPP_ tests inside ffs()
implementation. The #else clause was recursive.
Reviewed-by: Kenneth Graunke <[email protected]>
Tested-by: Alexander von Gluck <[email protected]>
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- Fix _GNUC__ typo in both checks
- Fix logic error in check for gcc < 3.4 that breaks for gcc 2.x & older
Without this fix, builds with gcc 3.4.x end up depending on undefined
_mesa_bitcount instead of gcc's __builtin_popcount.
NOTE: This is a candidate for the stable branches.
Signed-off-by: Alan Coopersmith <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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The i965 driver already had a function to count bits in a 64-bit uint
(brw_count_bits()), but it was buggy (it only counted the bottom 32
bits) and it was clumsy (it had a strange and broken fallback for
non-GCC-like compilers, which fortunately was never used). Since Mesa
already has a _mesa_bitcount() function, it seems better to just
create a _mesa_bitcount_64() function rather than special-case this in
the i965 driver.
This patch creates the new _mesa_bitcount_64() function and rewrites
all of the old brw_count_bits() calls to refer to it.
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
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Bionic does not support locales. This commit #ifdef's out the locale usage
in _mesa_strtof().
Signed-off-by: Chad Versace <[email protected]>
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The version check was bogus, and only inside a non-gcc block anyway.
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http://bugs.freedesktop.org/show_bug.cgi?id=35200 reports a disk
partition getting filled because of warning messages. Stop emitting
after 50.
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Signed-off-by: Chris Wilson <[email protected]>
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Suggested by a freedesktop.org admin.
Signed-off-by: Cyril Brulebois <[email protected]>
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Directly include mtypes.h if a file uses a gl_context struct. This
allows future removal of headers that are not strictly necessary but
indirectly include mtypes.h for a file.
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Signed-off-by: Brian Paul <[email protected]>
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