diff options
Diffstat (limited to 'community/agg/0007-Implement-grain-extract-blending-mode-GIMP.patch')
| -rw-r--r-- | community/agg/0007-Implement-grain-extract-blending-mode-GIMP.patch | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/community/agg/0007-Implement-grain-extract-blending-mode-GIMP.patch b/community/agg/0007-Implement-grain-extract-blending-mode-GIMP.patch new file mode 100644 index 000000000..cafb36eb0 --- /dev/null +++ b/community/agg/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 + |