diff options
Diffstat (limited to 'libraries/agg/patches/0006-Implement-grain-merge-blending-mode-GIMP.patch')
| -rw-r--r-- | libraries/agg/patches/0006-Implement-grain-merge-blending-mode-GIMP.patch | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/libraries/agg/patches/0006-Implement-grain-merge-blending-mode-GIMP.patch b/libraries/agg/patches/0006-Implement-grain-merge-blending-mode-GIMP.patch new file mode 100644 index 0000000000..f1e465b4d3 --- /dev/null +++ b/libraries/agg/patches/0006-Implement-grain-merge-blending-mode-GIMP.patch @@ -0,0 +1,85 @@ +From 9422570f4e099a834fc43619f7b2a7eb6b442e25 Mon Sep 17 00:00:00 2001 +From: Tom Hughes <tom@compton.nu> +Date: Sun, 19 May 2013 15:31:01 +0100 +Subject: [PATCH 06/15] Implement grain-merge blending mode (GIMP) + +--- + include/agg_pixfmt_rgba.h | 42 ++++++++++++++++++++++++++++++++++++++++-- + 1 file changed, 40 insertions(+), 2 deletions(-) + +diff --git a/include/agg_pixfmt_rgba.h b/include/agg_pixfmt_rgba.h +index 79d10dc..f576ce4 100644 +--- a/include/agg_pixfmt_rgba.h ++++ b/include/agg_pixfmt_rgba.h +@@ -1401,9 +1401,46 @@ namespace agg + } + }; + ++ //================================================comp_op_rgba_grain_merge ++ template <typename ColorT, typename Order> struct comp_op_rgba_grain_merge ++ { ++ 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) ++ { + +- ++ if(cover < 255) ++ { ++ sr = (sr * cover + 255) >> 8; ++ sg = (sg * cover + 255) >> 8; ++ sb = (sb * cover + 255) >> 8; ++ sa = (sa * cover + 255) >> 8; ++ } ++ if(sa) ++ { ++ calc_type da = p[Order::A]; ++ int dr = sr + p[Order::R] - 128; ++ int dg = sg + p[Order::G] - 128; ++ int db = sb + p[Order::B] - 128; ++ p[Order::R] = (value_type)(dr < 0 ? 0 : (dr > 255 ? 255 : dr)); ++ p[Order::G] = (value_type)(dg < 0 ? 0 : (dg > 255 ? 255 : dg)); ++ p[Order::B] = (value_type)(db < 0 ? 0 : (db > 255 ? 255 : db)); ++ p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); ++ } ++ } ++ }; + + //======================================================comp_op_table_rgba + template<class ColorT, class Order> struct comp_op_table_rgba +@@ -1451,6 +1488,7 @@ namespace agg + comp_op_rgba_contrast <ColorT,Order>::blend_pix, + 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, + 0 + }; + +@@ -1486,6 +1524,7 @@ namespace agg + comp_op_contrast, //----comp_op_contrast + comp_op_invert, //----comp_op_invert + comp_op_invert_rgb, //----comp_op_invert_rgb ++ comp_op_grain_merge, //----comp_op_grain_merge + + end_of_comp_op_e + }; +@@ -2908,4 +2947,3 @@ namespace agg + } + + #endif +- +-- +1.8.1.4 + |