Change the type of the stack based scanline buffer to uint8_t to match the rest
of the variables. Also premultiply the scanline buffer size by sizeof(uint32_t)
because the bpp can be either sizeof(uint32_t) or sizeof(uint64_t).
'and r7, %[upper_component_mask]' appears to by a short hand for
'and r7, %[upper_component_mask], %[upper_component_mask]'. Use
the explicit form to avoid any confusion.
This code is only for CPUs supporting the SIMD instructions, not for all ARM
CPUs.
I stumbled above the recent commit with the ARM SIMD code while preparing a
patch that models the patch from #13445 after the MMX and SSE2 cases:
The ARM SIMD option currently uses --disable-arm, although this code is only
for CPUs >= ARMv6. That's as if one would call the option to disable the SSE2
code --disable-x86.
This patch therefore renames the configure option and the function and file
names to arm-simd/arm_simd.
Replace all inline definitions with a common one in pixman-private.h. Also, add
'force_inline' and replace all existing uses of 'inline' as a forced inline
with 'force_inline'.
The previous code assumed a color format of ABGR when naming the
variables. The true color format is ARGB. This did not cause any bugs
because no functions rely on the order of colors so far. This patch
renames the variables just to avoid confusion.
The "fbComposeSetupSSE2()" function is guarding most of its code
depending on the capabilities of the CPU, but unfortunately the call
to "_mm_empty()" is not part of this code path but executed
unconditionally. This results in a "illegal instruction" crash on
non-MMX / non-SSE capable CPUs caused by the the "emms" instruction
(embedded in "_mm_empty()").
Fix bug 17729.
There was significant performance overhead associated with indirect
call to the fetch functions, so inline them.
Also, the old code assumed that if the number of rectangles in the
source clip was 1, then the clip was identical to the image
boundaries. Fix that by running a full region_contains_point()
whenever the source clip is different from pict->common.full_region.
Based on a patch from Antoine Azar.
