These generally extracted the 2 bits of alpha, then shifted them 62
bits and replicated across 16 bits. Then they were shifted another 48
bits, making the resulting alpha channel 0.
For consistency we will probably want to allow component alpha to be
set on all masks at some point, but this commit only enabled it for
solid images.
This reverts commit 29e22cf38e.
For consistency we will probably want to allow component alpha to be
set on all masks at some point, but not in the stable branch, and this
commit only enabled it for solid images anyway.
This reverts commit 29e22cf38e.
On an Athlon64 box prefetch from NULL slows down
the rgba OVER rgba fast for predominantly solid sources
by up to 3.5x in the one-rounded-rectangle test case
when run using a tiling polygon renderer. This patch
conditionalises the prefetches of the mask everywhere
where the mask pointer may be NULL in a fast path.
Compile warnings are being lost in the sea of noise. Automake-1.11 finally
introduced AM_SILENT_RULES to suppress the echoing of the compile line for
every object. Enable this to bring sanity to the pixman build.
CFLAGS are always appended to the end of gcc options when compiling
sources in autotools based projects. Configure tests should do the
same. Otherwise build fails on PPC when using CFLAGS="-O2 -mno-altivec"
for example. Similar problem affects ARM.
This can help to fix build problems with '-mthumb' gcc option in CFLAGS.
ARMv6 optimized code can't be compiled for thumb (because of its inline
assembly) and gets automatically disabled in configure. Reference
to it from NEON optimized code resulted in linking problems.
Every ARMv6 optimized fast path function also has a better NEON
counterpart, so there is no need to fallback to ARMv6. Shorter
delegate chain should additionally result in a bit better performance.
CFLAGS are always appended to the end of gcc options when compiling
sources in autotools based projects. Configure tests should do the
same. Otherwise build fails on PPC when using CFLAGS="-O2 -mno-altivec"
for example. Similar problem affects ARM.
This can help to fix build problems with '-mthumb' gcc option in CFLAGS.
ARMv6 optimized code can't be compiled for thumb (because of its inline
assembly) and gets automatically disabled in configure. Reference
to it from NEON optimized code resulted in linking problems.
Every ARMv6 optimized fast path function also has a better NEON
counterpart, so there is no need to fallback to ARMv6. Shorter
delegate chain should additionally result in a bit better performance.
Autoconf's AC_PROG_CC sets the default CFLAGS to -O2 -g for
gcc and -g for every other compiler. This patch defaults
CFLAGS to the equivalent -O -g when we're using Sun Studio's cc
if the user or site admin hasn't already set CFLAGS.
Calling a static function wrapper around _mm_set_epi32() when not
using optimisation causes Sun Studio 12's cc to emit a spurious
floating point load which confuses the assembler. Using a macro wrapper
rather than a function steps around the problem.
Autoconf's AC_PROG_CC sets the default CFLAGS to -O2 -g for
gcc and -g for every other compiler. This patch defaults
CFLAGS to the equivalent -O -g when we're using Sun Studio's cc
if the user or site admin hasn't already set CFLAGS.
Calling a static function wrapper around _mm_set_epi32() when not
using optimisation causes Sun Studio 12's cc to emit a spurious
floating point load which confuses the assembler. Using a macro wrapper
rather than a function steps around the problem.
Some versions of gcc (cs2009q1, 4.4.1) incorrectly reject
shift operand having value >= 8, claiming that it is out of
range. So inline assembly is used as a workaround.
Some versions of gcc (cs2009q1, 4.4.1) incorrectly reject
shift operand having value >= 8, claiming that it is out of
range. So inline assembly is used as a workaround.
This is one example of a compiler warning that was lost amit the build
noise.
The error here is that in a list of required conditions we used ';'
instead of '&&' with the result of continuing to use the fast-path
even if we had a wide mask.
Another error is that it was testing src, not mask as it should.
