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gfx/cairo/libpixman/src/make-combine.pl@b8a032363ba2 (annotated)

gfx/cairo/libpixman/src/make-combine.pl

Thu, 22 Jan 2015 13:21:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 22 Jan 2015 13:21:57 +0100

branch

TOR_BUG_9701

changeset 15

b8a032363ba2

permissions

-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0	1	$usage = "Usage: combine.pl { 8 | 16 } < pixman-combine.c.template";
michael@0	2
michael@0	3	$#ARGV == 0 or die $usage;
michael@0	4
michael@0	5	# Get the component size.
michael@0	6	$size = int($ARGV[0]);
michael@0	7	$size == 8 or $size == 16 or die $usage;
michael@0	8
michael@0	9	$pixel_size = $size * 4;
michael@0	10	$half_pixel_size = $size * 2;
michael@0	11
michael@0	12	sub mask {
michael@0	13	my $str = shift;
michael@0	14	my $suffix;
michael@0	15	$suffix = "ULL" if $size > 8;
michael@0	16
michael@0	17	return "0x" . $str . $suffix;
michael@0	18	}
michael@0	19
michael@0	20	# Generate mask strings.
michael@0	21	$nibbles = $size / 4;
michael@0	22	$mask = "f" x $nibbles;
michael@0	23	$zero_mask = "0" x $nibbles;
michael@0	24	$one_half = "8" . "0" x ($nibbles - 1);
michael@0	25
michael@0	26	print "/* WARNING: This file is generated by combine.pl from combine.inc.\n";
michael@0	27	print " Please edit one of those files rather than this one. */\n";
michael@0	28	print "\n";
michael@0	29
michael@0	30	print "#line 1 \"pixman-combine.c.template\"\n";
michael@0	31
michael@0	32	$mask_ = mask($mask);
michael@0	33	$one_half_ = mask($one_half);
michael@0	34	$g_mask = mask($mask . $zero_mask);
michael@0	35	$b_mask = mask($mask . $zero_mask x 2);
michael@0	36	$a_mask = mask($mask . $zero_mask x 3);
michael@0	37	$rb_mask = mask($mask . $zero_mask . $mask);
michael@0	38	$ag_mask = mask($mask . $zero_mask . $mask . $zero_mask);
michael@0	39	$rb_one_half = mask($one_half . $zero_mask . $one_half);
michael@0	40	$rb_mask_plus_one = mask("1" . $zero_mask x 2 . "1" . $zero_mask);
michael@0	41
michael@0	42	while (<STDIN>) {
michael@0	43	# Mask and 1/2 value for a single component.
michael@0	44	s/#define COMPONENT_SIZE\b/$& $size/;
michael@0	45	s/#define MASK\b/$& $mask_/;
michael@0	46	s/#define ONE_HALF\b/$& $one_half_/;
michael@0	47
michael@0	48	# Shifts and masks for green, blue, and alpha.
michael@0	49	s/#define G_SHIFT\b/$& $size/;
michael@0	50	s/#define R_SHIFT\b/$& $size * 2/;
michael@0	51	s/#define A_SHIFT\b/$& $size * 3/;
michael@0	52	s/#define G_MASK\b/$& $g_mask/;
michael@0	53	s/#define R_MASK\b/$& $b_mask/;
michael@0	54	s/#define A_MASK\b/$& $a_mask/;
michael@0	55
michael@0	56	# Special values for dealing with red + blue at the same time.
michael@0	57	s/#define RB_MASK\b/$& $rb_mask/;
michael@0	58	s/#define AG_MASK\b/$& $ag_mask/;
michael@0	59	s/#define RB_ONE_HALF\b/$& $rb_one_half/;
michael@0	60	s/#define RB_MASK_PLUS_ONE\b/$& $rb_mask_plus_one/;
michael@0	61
michael@0	62	# Add 32/64 suffix to combining function types.
michael@0	63	s/\bCombineFunc\b/CombineFunc$pixel_size/;
michael@0	64	s/\bFbComposeFunctions\b/FbComposeFunctions$pixel_size/;
michael@0	65	s/combine_width/combine_$pixel_size/;
michael@0	66	s/_pixman_setup_combiner_functions_width/_pixman_setup_combiner_functions_$pixel_size/;
michael@0	67	s/UNc/UN$size/g;
michael@0	68	s/ALPHA_c/ALPHA_$size/g;
michael@0	69	s/RED_c/RED_$size/g;
michael@0	70	s/GREEN_c/GREEN_$size/g;
michael@0	71	s/BLUE_c/BLUE_$size/g;
michael@0	72
michael@0	73	# Convert comp*_t values into the appropriate real types.
michael@0	74	s/comp1_t/uint${size}_t/g;
michael@0	75	s/comp2_t/uint${half_pixel_size}_t/g;
michael@0	76	s/comp4_t/uint${pixel_size}_t/g;
michael@0	77
michael@0	78	# Change the function table name for the 64-bit version.
michael@0	79	s/pixman_composeFunctions/pixman_composeFunctions64/ if $size == 16;
michael@0	80
michael@0	81	# Change the header for the 64-bit version
michael@0	82	s/pixman-combine.h/pixman-combine64.h/ if $size == 16;
michael@0	83	s/pixman-combine.h/pixman-combine32.h/ if $size == 8;
michael@0	84
michael@0	85	print;
michael@0	86	}