Old X servers rely on out-of-bounds accesses when they are asked
to composite with a window as t...

Bug 22681.

This patch fixes the following build error caused
by commit a98b71eff4041df58c9dcc2b1e25...

The changes in pixman behavior justifying this are:

- New clipping rules

- Bug fixes in region...

Also add a couple more tests to region-test.c.

- Make sure the non-gtk+ test programs are added to noinst_PROGRAMS
when HAVE_GTK is not set.
...

s/combine_(.+)_c([^a-z0-9A-Z])/combine_$1_ca$2/g;

The name numRects is public API and can't be changed.

s/sizeRI/size_ri/g;
s/numRI/num_ri/g;
s/RepeatNone/REPEAT_NONE/g;
s/fbOver/over/g;
s/fbIn/in/g;
...

Lum => LUM
Sat => SAT
Min => CH_MIN
Max => CH_MAX

There are now RED_8/RED_16 etc. macros instead of the old Red/Green/Blue.

s/fbCombine/combine/g;

But also more cryptic unfortunately. For example FbByteMul() becomes
UN8x4_MUL_UN8() to indicate...

For example IntMul becomes MUL_UN8 to indicate that it multiplies two
unsigned normalized 8 bit ...

s/Combine([AB])([a-zA-Z]+)([^a-zA-Z])/COMBINE_$1_\U$2$3/g;
s/CombineA/COMBINE_A/g;
s/CombineB/CO...

s/Shift4/SHIFT_4/g;
s/Get4/GET_4/g;
s/Put4/PUT_4/g;
s/DefineAlpha/DEFINE_ALPHA/g;
s/AddAlpha/ADD...

s/QuadwordCopy_neon/neon_quadword_copy/g;

s/miClipPictureSrc/clip_source_image/g;
s/miClipPictureReg/clip_general_image/g;

s/([^a-z])pReg/$1region/g;
s/([^a-z])pY/$1y_line/g;
s/([^a-z])pU/$1u_line/g;
s/([^a-z])pV/$1v_li...

s/Src_pixbuf/_over_pixbuf/g;
s/Src_x888_n/_over_x888_n/g;
s/CompositeSrc_8888_8888/c...

s/fbFetchPixel/fetch_pixels/g;
s/fbFetch/fetch_scanline/g;
s/fbStore/store_scanline/g;

s/([^o])pSrc/$1src_image/g;
s/([^o])pDst/$1dst_image/g;
s/([^o])pMask/$1mask_image/g...

s/CvtR8G8B8toY15/CONVERT_RGB24_TO_Y15/g;
s/cvt8888to0565/CONVERT_8888_TO_0565/g;
s/c...

s/xDst/dest_x/g;
s/yDst/dest_y/g;
s/xMask/mask_x/g;
s/yMask/mask_y/g;
s/xSrc...

s/SrcAdd/Add/g;
s/SolidMaskSrc/Src/g;
s/SolidMaskIn/In/g;
s/SolidMask/Over/g;
...

Otherwise they show up in the validated regions.

This should produce a valid region without empty rectangles in
it. Currently it doesn't.

Delete some duplicated macros.

Commit 9d3f71d726c8b959b64c3e6b43ca4d3ccb320c32 broke the build
on ARM architectures by just rem...

Commit 6e20c2574354d1cb071a1201ff166cb5e92c00d2 broke the build on ARM
architectures by not upda...

It is not generally correct to bail out just because the source alpha
is 0. The color channels s...

Option -mcpu has higher priority than -march with the current versions
of gcc and that's why it ...

The 64 bit storers do their own type conversion.

It's simpler to just declare everything as 32 bit fetchers and do the
conversion in the few func...

fetch_scanline_t now takes a pixman_image_t argument instead of an
bits_image_t, so there is als...

Instead just declare the functions with the required type and do any
type conversions in the fun...

Fast paths should only run when the source images complete cover the
composite region, because o...

They are fixed-point values, not integers.

Bug 22437, reported by Michel Dänzer.

It isn't clear that component alpha makes sense with HSL blend modes.

We may resurrect it later, but leave it out for now, as the closest
thing we have to a spec:

ht...

Also rearrange the squares to better match typical aspect ratios.

It should return 0 when sa == 0