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Diffstat (limited to 'x11-libs/agg/files/2.5/0007-Implement-grain-extract-blending-mode-GIMP.patch')
-rw-r--r--x11-libs/agg/files/2.5/0007-Implement-grain-extract-blending-mode-GIMP.patch85
1 files changed, 85 insertions, 0 deletions
diff --git a/x11-libs/agg/files/2.5/0007-Implement-grain-extract-blending-mode-GIMP.patch b/x11-libs/agg/files/2.5/0007-Implement-grain-extract-blending-mode-GIMP.patch
new file mode 100644
index 000000000..cafb36eb0
--- /dev/null
+++ b/x11-libs/agg/files/2.5/0007-Implement-grain-extract-blending-mode-GIMP.patch
@@ -0,0 +1,85 @@
+From abd440342e166a90d08610bf5b31d2a8357eafbe Mon Sep 17 00:00:00 2001
+From: Tom Hughes <tom@compton.nu>
+Date: Sun, 19 May 2013 15:43:18 +0100
+Subject: [PATCH 07/15] Implement grain-extract blending mode (GIMP)
+
+---
+ include/agg_pixfmt_rgba.h | 48 +++++++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 48 insertions(+)
+
+diff --git a/include/agg_pixfmt_rgba.h b/include/agg_pixfmt_rgba.h
+index f576ce4..42f0a05 100644
+--- a/include/agg_pixfmt_rgba.h
++++ b/include/agg_pixfmt_rgba.h
+@@ -1442,6 +1442,52 @@ namespace agg
+ }
+ };
+
++ //==============================================comp_op_rgba_grain_extract
++ template <typename ColorT, typename Order> struct comp_op_rgba_grain_extract
++ {
++ typedef ColorT color_type;
++ typedef Order order_type;
++ typedef typename color_type::value_type value_type;
++ typedef typename color_type::calc_type calc_type;
++ typedef typename color_type::long_type long_type;
++ enum base_scale_e
++ {
++ base_shift = color_type::base_shift,
++ base_mask = color_type::base_mask
++ };
++
++ // E = I - M + 128
++ static AGG_INLINE void blend_pix(value_type* p,
++ unsigned sr, unsigned sg, unsigned sb,
++ unsigned sa, unsigned cover)
++ {
++ calc_type da = (p[Order::A] * sa + 255) >> 8;
++
++ int dr = p[Order::R] - sr + 128;
++ int dg = p[Order::G] - sg + 128;
++ int db = p[Order::B] - sb + 128;
++
++ dr = dr < 0 ? 0 : (dr > 255 ? 255 : dr);
++ dg = dg < 0 ? 0 : (dg > 255 ? 255 : dg);
++ db = db < 0 ? 0 : (db > 255 ? 255 : db);
++
++ p[Order::A] = da;
++
++ if(da < 255)
++ {
++ p[Order::R] = (dr * da + 255) >> 8;
++ p[Order::G] = (dg * da + 255) >> 8;
++ p[Order::B] = (db * da + 255) >> 8;
++ }
++ else
++ {
++ p[Order::R] = dr;
++ p[Order::G] = dg;
++ p[Order::B] = db;
++ }
++ }
++ };
++
+ //======================================================comp_op_table_rgba
+ template<class ColorT, class Order> struct comp_op_table_rgba
+ {
+@@ -1489,6 +1535,7 @@ namespace agg
+ comp_op_rgba_invert <ColorT,Order>::blend_pix,
+ comp_op_rgba_invert_rgb <ColorT,Order>::blend_pix,
+ comp_op_rgba_grain_merge<ColorT,Order>::blend_pix,
++ comp_op_rgba_grain_extract<ColorT,Order>::blend_pix,
+ 0
+ };
+
+@@ -1525,6 +1572,7 @@ namespace agg
+ comp_op_invert, //----comp_op_invert
+ comp_op_invert_rgb, //----comp_op_invert_rgb
+ comp_op_grain_merge, //----comp_op_grain_merge
++ comp_op_grain_extract, //----comp_op_grain_extract
+
+ end_of_comp_op_e
+ };
+--
+1.8.1.4
+