1 files changed, 86 insertions, 0 deletions
diff --git a/gfx/cairo/libpixman/src/make-combine.pl b/gfx/cairo/libpixman/src/make-combine.pl
new file mode 100644
index 000000000..210a5da12
--- /dev/null
+++ b/gfx/cairo/libpixman/src/make-combine.pl
@@ -0,0 +1,86 @@
+$usage = "Usage: combine.pl { 8 | 16 } < pixman-combine.c.template";
+
+$#ARGV == 0 or die $usage;
+
+# Get the component size.
+$size = int($ARGV[0]);
+$size == 8 or $size == 16 or die $usage;
+
+$pixel_size = $size * 4;
+$half_pixel_size = $size * 2;
+
+sub mask {
+    my $str = shift;
+    my $suffix;
+    $suffix = "ULL" if $size > 8;
+
+    return "0x" . $str . $suffix;
+}
+
+# Generate mask strings.
+$nibbles = $size / 4;
+$mask = "f" x $nibbles;
+$zero_mask = "0" x $nibbles;
+$one_half = "8" . "0" x ($nibbles - 1);
+
+print "/* WARNING: This file is generated by combine.pl from combine.inc.\n";
+print "   Please edit one of those files rather than this one. */\n";
+print "\n";
+
+print "#line 1 \"pixman-combine.c.template\"\n";
+
+$mask_ = mask($mask);
+$one_half_ = mask($one_half);
+$g_mask = mask($mask . $zero_mask);
+$b_mask = mask($mask . $zero_mask x 2);
+$a_mask = mask($mask . $zero_mask x 3);
+$rb_mask = mask($mask . $zero_mask . $mask);
+$ag_mask = mask($mask . $zero_mask . $mask . $zero_mask);
+$rb_one_half = mask($one_half . $zero_mask . $one_half);
+$rb_mask_plus_one = mask("1" . $zero_mask x 2 . "1" .  $zero_mask);
+
+while (<STDIN>) {
+    # Mask and 1/2 value for a single component.
+    s/#define COMPONENT_SIZE\b/$& $size/;
+    s/#define MASK\b/$& $mask_/;
+    s/#define ONE_HALF\b/$& $one_half_/;
+
+    # Shifts and masks for green, blue, and alpha.
+    s/#define G_SHIFT\b/$& $size/;
+    s/#define R_SHIFT\b/$& $size * 2/;
+    s/#define A_SHIFT\b/$& $size * 3/;
+    s/#define G_MASK\b/$& $g_mask/;
+    s/#define R_MASK\b/$& $b_mask/;
+    s/#define A_MASK\b/$& $a_mask/;
+
+    # Special values for dealing with red + blue at the same time.
+    s/#define RB_MASK\b/$& $rb_mask/;
+    s/#define AG_MASK\b/$& $ag_mask/;
+    s/#define RB_ONE_HALF\b/$& $rb_one_half/;
+    s/#define RB_MASK_PLUS_ONE\b/$& $rb_mask_plus_one/;
+
+    # Add 32/64 suffix to combining function types.
+    s/\bCombineFunc\b/CombineFunc$pixel_size/;
+    s/\bFbComposeFunctions\b/FbComposeFunctions$pixel_size/;
+    s/combine_width/combine_$pixel_size/;
+    s/_pixman_setup_combiner_functions_width/_pixman_setup_combiner_functions_$pixel_size/;
+    s/UNc/UN$size/g;
+    s/ALPHA_c/ALPHA_$size/g;
+    s/RED_c/RED_$size/g;
+    s/GREEN_c/GREEN_$size/g;
+    s/BLUE_c/BLUE_$size/g;
+
+    # Convert comp*_t values into the appropriate real types.
+    s/comp1_t/uint${size}_t/g;
+    s/comp2_t/uint${half_pixel_size}_t/g;
+    s/comp4_t/uint${pixel_size}_t/g;
+
+    # Change the function table name for the 64-bit version.
+    s/pixman_composeFunctions/pixman_composeFunctions64/ if $size == 16;
+
+    # Change the header for the 64-bit version
+    s/pixman-combine.h/pixman-combine64.h/ if $size == 16;
+    s/pixman-combine.h/pixman-combine32.h/ if $size == 8;
+
+    print;
+}