//---------------------------------------------------------------------------- // Anti-Grain Geometry (AGG) - Version 2.5 // A high quality rendering engine for C++ // Copyright (C) 2002-2006 Maxim Shemanarev // Contact: mcseem@antigrain.com // mcseemagg@yahoo.com // http://antigrain.com // // AGG is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // AGG is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with AGG; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, // MA 02110-1301, USA. //---------------------------------------------------------------------------- // // Adaptation for high precision colors has been sponsored by // Liberty Technology Systems, Inc., visit http://lib-sys.com // // Liberty Technology Systems, Inc. is the provider of // PostScript and PDF technology for software developers. // //---------------------------------------------------------------------------- #ifndef AGG_PIXFMT_RGBA_INCLUDED #define AGG_PIXFMT_RGBA_INCLUDED #include <string.h> #include <math.h> #include "agg_basics.h" #include "agg_color_rgba.h" #include "agg_rendering_buffer.h" namespace agg { //=========================================================multiplier_rgba template<class ColorT, class Order> struct multiplier_rgba { typedef typename ColorT::value_type value_type; typedef typename ColorT::calc_type calc_type; //-------------------------------------------------------------------- static AGG_INLINE void premultiply(value_type* p) { calc_type a = p[Order::A]; if(a < ColorT::base_mask) { if(a == 0) { p[Order::R] = p[Order::G] = p[Order::B] = 0; return; } p[Order::R] = value_type((p[Order::R] * a + ColorT::base_mask) >> ColorT::base_shift); p[Order::G] = value_type((p[Order::G] * a + ColorT::base_mask) >> ColorT::base_shift); p[Order::B] = value_type((p[Order::B] * a + ColorT::base_mask) >> ColorT::base_shift); } } //-------------------------------------------------------------------- static AGG_INLINE void demultiply(value_type* p) { calc_type a = p[Order::A]; if(a < ColorT::base_mask) { if(a == 0) { p[Order::R] = p[Order::G] = p[Order::B] = 0; return; } calc_type r = (calc_type(p[Order::R]) * ColorT::base_mask) / a; calc_type g = (calc_type(p[Order::G]) * ColorT::base_mask) / a; calc_type b = (calc_type(p[Order::B]) * ColorT::base_mask) / a; p[Order::R] = value_type((r > ColorT::base_mask) ? ColorT::base_mask : r); p[Order::G] = value_type((g > ColorT::base_mask) ? ColorT::base_mask : g); p[Order::B] = value_type((b > ColorT::base_mask) ? ColorT::base_mask : b); } } }; //=====================================================apply_gamma_dir_rgba template<class ColorT, class Order, class GammaLut> class apply_gamma_dir_rgba { public: typedef typename ColorT::value_type value_type; apply_gamma_dir_rgba(const GammaLut& gamma) : m_gamma(gamma) {} AGG_INLINE void operator () (value_type* p) { p[Order::R] = m_gamma.dir(p[Order::R]); p[Order::G] = m_gamma.dir(p[Order::G]); p[Order::B] = m_gamma.dir(p[Order::B]); } private: const GammaLut& m_gamma; }; //=====================================================apply_gamma_inv_rgba template<class ColorT, class Order, class GammaLut> class apply_gamma_inv_rgba { public: typedef typename ColorT::value_type value_type; apply_gamma_inv_rgba(const GammaLut& gamma) : m_gamma(gamma) {} AGG_INLINE void operator () (value_type* p) { p[Order::R] = m_gamma.inv(p[Order::R]); p[Order::G] = m_gamma.inv(p[Order::G]); p[Order::B] = m_gamma.inv(p[Order::B]); } private: const GammaLut& m_gamma; }; //=============================================================blender_rgba template<class ColorT, class Order> struct blender_rgba { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; //-------------------------------------------------------------------- static AGG_INLINE void blend_pix(value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned alpha, unsigned cover=0) { calc_type r = p[Order::R]; calc_type g = p[Order::G]; calc_type b = p[Order::B]; calc_type a = p[Order::A]; p[Order::R] = (value_type)(((cr - r) * alpha + (r << base_shift)) >> base_shift); p[Order::G] = (value_type)(((cg - g) * alpha + (g << base_shift)) >> base_shift); p[Order::B] = (value_type)(((cb - b) * alpha + (b << base_shift)) >> base_shift); p[Order::A] = (value_type)((alpha + a) - ((alpha * a + base_mask) >> base_shift)); } }; //=========================================================blender_rgba_pre template<class ColorT, class Order> struct blender_rgba_pre { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; //-------------------------------------------------------------------- static AGG_INLINE void blend_pix(value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned alpha, unsigned cover) { alpha = color_type::base_mask - alpha; cover = (cover + 1) << (base_shift - 8); p[Order::R] = (value_type)((p[Order::R] * alpha + cr * cover) >> base_shift); p[Order::G] = (value_type)((p[Order::G] * alpha + cg * cover) >> base_shift); p[Order::B] = (value_type)((p[Order::B] * alpha + cb * cover) >> base_shift); p[Order::A] = (value_type)(base_mask - ((alpha * (base_mask - p[Order::A])) >> base_shift)); } //-------------------------------------------------------------------- static AGG_INLINE void blend_pix(value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned alpha) { alpha = color_type::base_mask - alpha; p[Order::R] = (value_type)(((p[Order::R] * alpha) >> base_shift) + cr); p[Order::G] = (value_type)(((p[Order::G] * alpha) >> base_shift) + cg); p[Order::B] = (value_type)(((p[Order::B] * alpha) >> base_shift) + cb); p[Order::A] = (value_type)(base_mask - ((alpha * (base_mask - p[Order::A])) >> base_shift)); } }; //======================================================blender_rgba_plain template<class ColorT, class Order> struct blender_rgba_plain { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift }; //-------------------------------------------------------------------- static AGG_INLINE void blend_pix(value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned alpha, unsigned cover=0) { if(alpha == 0) return; calc_type a = p[Order::A]; calc_type r = p[Order::R] * a; calc_type g = p[Order::G] * a; calc_type b = p[Order::B] * a; a = ((alpha + a) << base_shift) - alpha * a; p[Order::A] = (value_type)(a >> base_shift); p[Order::R] = (value_type)((((cr << base_shift) - r) * alpha + (r << base_shift)) / a); p[Order::G] = (value_type)((((cg << base_shift) - g) * alpha + (g << base_shift)) / a); p[Order::B] = (value_type)((((cb << base_shift) - b) * alpha + (b << base_shift)) / a); } }; //=========================================================comp_op_rgba_clear template<class ColorT, class Order> struct comp_op_rgba_clear { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; static AGG_INLINE void blend_pix(value_type* p, unsigned, unsigned, unsigned, unsigned, unsigned cover) { if(cover < 255) { cover = 255 - cover; p[Order::R] = (value_type)((p[Order::R] * cover + 255) >> 8); p[Order::G] = (value_type)((p[Order::G] * cover + 255) >> 8); p[Order::B] = (value_type)((p[Order::B] * cover + 255) >> 8); p[Order::A] = (value_type)((p[Order::A] * cover + 255) >> 8); } else { p[0] = p[1] = p[2] = p[3] = 0; } } }; //===========================================================comp_op_rgba_src template<class ColorT, class Order> struct comp_op_rgba_src { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; static AGG_INLINE void blend_pix(value_type* p, unsigned sr, unsigned sg, unsigned sb, unsigned sa, unsigned cover) { if(cover < 255) { unsigned alpha = 255 - cover; p[Order::R] = (value_type)(((p[Order::R] * alpha + 255) >> 8) + ((sr * cover + 255) >> 8)); p[Order::G] = (value_type)(((p[Order::G] * alpha + 255) >> 8) + ((sg * cover + 255) >> 8)); p[Order::B] = (value_type)(((p[Order::B] * alpha + 255) >> 8) + ((sb * cover + 255) >> 8)); p[Order::A] = (value_type)(((p[Order::A] * alpha + 255) >> 8) + ((sa * cover + 255) >> 8)); } else { p[Order::R] = sr; p[Order::G] = sg; p[Order::B] = sb; p[Order::A] = sa; } } }; //===========================================================comp_op_rgba_dst template<class ColorT, class Order> struct comp_op_rgba_dst { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; static AGG_INLINE void blend_pix(value_type*, unsigned, unsigned, unsigned, unsigned, unsigned) { } }; //======================================================comp_op_rgba_src_over template<class ColorT, class Order> struct comp_op_rgba_src_over { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Sca + Dca.(1 - Sa) // Da' = Sa + Da - Sa.Da 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; } calc_type s1a = base_mask - sa; p[Order::R] = (value_type)(sr + ((p[Order::R] * s1a + base_mask) >> base_shift)); p[Order::G] = (value_type)(sg + ((p[Order::G] * s1a + base_mask) >> base_shift)); p[Order::B] = (value_type)(sb + ((p[Order::B] * s1a + base_mask) >> base_shift)); p[Order::A] = (value_type)(sa + p[Order::A] - ((sa * p[Order::A] + base_mask) >> base_shift)); } }; //======================================================comp_op_rgba_dst_over template<class ColorT, class Order> struct comp_op_rgba_dst_over { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Dca + Sca.(1 - Da) // Da' = Sa + Da - Sa.Da 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; } calc_type d1a = base_mask - p[Order::A]; p[Order::R] = (value_type)(p[Order::R] + ((sr * d1a + base_mask) >> base_shift)); p[Order::G] = (value_type)(p[Order::G] + ((sg * d1a + base_mask) >> base_shift)); p[Order::B] = (value_type)(p[Order::B] + ((sb * d1a + base_mask) >> base_shift)); p[Order::A] = (value_type)(sa + p[Order::A] - ((sa * p[Order::A] + base_mask) >> base_shift)); } }; //======================================================comp_op_rgba_src_in template<class ColorT, class Order> struct comp_op_rgba_src_in { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Sca.Da // Da' = Sa.Da 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]; if(cover < 255) { unsigned alpha = 255 - cover; p[Order::R] = (value_type)(((p[Order::R] * alpha + 255) >> 8) + ((((sr * da + base_mask) >> base_shift) * cover + 255) >> 8)); p[Order::G] = (value_type)(((p[Order::G] * alpha + 255) >> 8) + ((((sg * da + base_mask) >> base_shift) * cover + 255) >> 8)); p[Order::B] = (value_type)(((p[Order::B] * alpha + 255) >> 8) + ((((sb * da + base_mask) >> base_shift) * cover + 255) >> 8)); p[Order::A] = (value_type)(((p[Order::A] * alpha + 255) >> 8) + ((((sa * da + base_mask) >> base_shift) * cover + 255) >> 8)); } else { p[Order::R] = (value_type)((sr * da + base_mask) >> base_shift); p[Order::G] = (value_type)((sg * da + base_mask) >> base_shift); p[Order::B] = (value_type)((sb * da + base_mask) >> base_shift); p[Order::A] = (value_type)((sa * da + base_mask) >> base_shift); } } }; //======================================================comp_op_rgba_dst_in template<class ColorT, class Order> struct comp_op_rgba_dst_in { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Dca.Sa // Da' = Sa.Da static AGG_INLINE void blend_pix(value_type* p, unsigned, unsigned, unsigned, unsigned sa, unsigned cover) { if(cover < 255) { sa = base_mask - ((cover * (base_mask - sa) + 255) >> 8); } p[Order::R] = (value_type)((p[Order::R] * sa + base_mask) >> base_shift); p[Order::G] = (value_type)((p[Order::G] * sa + base_mask) >> base_shift); p[Order::B] = (value_type)((p[Order::B] * sa + base_mask) >> base_shift); p[Order::A] = (value_type)((p[Order::A] * sa + base_mask) >> base_shift); } }; //======================================================comp_op_rgba_src_out template<class ColorT, class Order> struct comp_op_rgba_src_out { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Sca.(1 - Da) // Da' = Sa.(1 - Da) static AGG_INLINE void blend_pix(value_type* p, unsigned sr, unsigned sg, unsigned sb, unsigned sa, unsigned cover) { calc_type da = base_mask - p[Order::A]; if(cover < 255) { unsigned alpha = 255 - cover; p[Order::R] = (value_type)(((p[Order::R] * alpha + 255) >> 8) + ((((sr * da + base_mask) >> base_shift) * cover + 255) >> 8)); p[Order::G] = (value_type)(((p[Order::G] * alpha + 255) >> 8) + ((((sg * da + base_mask) >> base_shift) * cover + 255) >> 8)); p[Order::B] = (value_type)(((p[Order::B] * alpha + 255) >> 8) + ((((sb * da + base_mask) >> base_shift) * cover + 255) >> 8)); p[Order::A] = (value_type)(((p[Order::A] * alpha + 255) >> 8) + ((((sa * da + base_mask) >> base_shift) * cover + 255) >> 8)); } else { p[Order::R] = (value_type)((sr * da + base_mask) >> base_shift); p[Order::G] = (value_type)((sg * da + base_mask) >> base_shift); p[Order::B] = (value_type)((sb * da + base_mask) >> base_shift); p[Order::A] = (value_type)((sa * da + base_mask) >> base_shift); } } }; //======================================================comp_op_rgba_dst_out template<class ColorT, class Order> struct comp_op_rgba_dst_out { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Dca.(1 - Sa) // Da' = Da.(1 - Sa) static AGG_INLINE void blend_pix(value_type* p, unsigned, unsigned, unsigned, unsigned sa, unsigned cover) { if(cover < 255) { sa = (sa * cover + 255) >> 8; } sa = base_mask - sa; p[Order::R] = (value_type)((p[Order::R] * sa + base_shift) >> base_shift); p[Order::G] = (value_type)((p[Order::G] * sa + base_shift) >> base_shift); p[Order::B] = (value_type)((p[Order::B] * sa + base_shift) >> base_shift); p[Order::A] = (value_type)((p[Order::A] * sa + base_shift) >> base_shift); } }; //=====================================================comp_op_rgba_src_atop template<class ColorT, class Order> struct comp_op_rgba_src_atop { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Sca.Da + Dca.(1 - Sa) // Da' = Da 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; } calc_type da = p[Order::A]; sa = base_mask - sa; p[Order::R] = (value_type)((sr * da + p[Order::R] * sa + base_mask) >> base_shift); p[Order::G] = (value_type)((sg * da + p[Order::G] * sa + base_mask) >> base_shift); p[Order::B] = (value_type)((sb * da + p[Order::B] * sa + base_mask) >> base_shift); } }; //=====================================================comp_op_rgba_dst_atop template<class ColorT, class Order> struct comp_op_rgba_dst_atop { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Dca.Sa + Sca.(1 - Da) // Da' = Sa static AGG_INLINE void blend_pix(value_type* p, unsigned sr, unsigned sg, unsigned sb, unsigned sa, unsigned cover) { calc_type da = base_mask - p[Order::A]; if(cover < 255) { unsigned alpha = 255 - cover; sr = (p[Order::R] * sa + sr * da + base_mask) >> base_shift; sg = (p[Order::G] * sa + sg * da + base_mask) >> base_shift; sb = (p[Order::B] * sa + sb * da + base_mask) >> base_shift; p[Order::R] = (value_type)(((p[Order::R] * alpha + 255) >> 8) + ((sr * cover + 255) >> 8)); p[Order::G] = (value_type)(((p[Order::G] * alpha + 255) >> 8) + ((sg * cover + 255) >> 8)); p[Order::B] = (value_type)(((p[Order::B] * alpha + 255) >> 8) + ((sb * cover + 255) >> 8)); p[Order::A] = (value_type)(((p[Order::A] * alpha + 255) >> 8) + ((sa * cover + 255) >> 8)); } else { p[Order::R] = (value_type)((p[Order::R] * sa + sr * da + base_mask) >> base_shift); p[Order::G] = (value_type)((p[Order::G] * sa + sg * da + base_mask) >> base_shift); p[Order::B] = (value_type)((p[Order::B] * sa + sb * da + base_mask) >> base_shift); p[Order::A] = (value_type)sa; } } }; //=========================================================comp_op_rgba_xor template<class ColorT, class Order> struct comp_op_rgba_xor { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Sca.(1 - Da) + Dca.(1 - Sa) // Da' = Sa + Da - 2.Sa.Da 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 s1a = base_mask - sa; calc_type d1a = base_mask - p[Order::A]; p[Order::R] = (value_type)((p[Order::R] * s1a + sr * d1a + base_mask) >> base_shift); p[Order::G] = (value_type)((p[Order::G] * s1a + sg * d1a + base_mask) >> base_shift); p[Order::B] = (value_type)((p[Order::B] * s1a + sb * d1a + base_mask) >> base_shift); p[Order::A] = (value_type)(sa + p[Order::A] - ((sa * p[Order::A] + base_mask/2) >> (base_shift - 1))); } } }; //=========================================================comp_op_rgba_plus template<class ColorT, class Order> struct comp_op_rgba_plus { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Sca + Dca // Da' = Sa + Da 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 dr = p[Order::R] + sr; calc_type dg = p[Order::G] + sg; calc_type db = p[Order::B] + sb; calc_type da = p[Order::A] + sa; p[Order::R] = (dr > base_mask) ? (value_type)base_mask : dr; p[Order::G] = (dg > base_mask) ? (value_type)base_mask : dg; p[Order::B] = (db > base_mask) ? (value_type)base_mask : db; p[Order::A] = (da > base_mask) ? (value_type)base_mask : da; } } }; //========================================================comp_op_rgba_minus template<class ColorT, class Order> struct comp_op_rgba_minus { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Dca - Sca // Da' = 1 - (1 - Sa).(1 - Da) 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 dr = p[Order::R] - sr; calc_type dg = p[Order::G] - sg; calc_type db = p[Order::B] - sb; p[Order::R] = (dr > base_mask) ? 0 : dr; p[Order::G] = (dg > base_mask) ? 0 : dg; p[Order::B] = (db > base_mask) ? 0 : db; p[Order::A] = (value_type)(sa + p[Order::A] - ((sa * p[Order::A] + base_mask) >> base_shift)); //p[Order::A] = (value_type)(base_mask - (((base_mask - sa) * (base_mask - p[Order::A]) + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_multiply template<class ColorT, class Order> struct comp_op_rgba_multiply { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Sca.Dca + Sca.(1 - Da) + Dca.(1 - Sa) // Da' = Sa + Da - Sa.Da 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 s1a = base_mask - sa; calc_type d1a = base_mask - p[Order::A]; calc_type dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; p[Order::R] = (value_type)((sr * dr + sr * d1a + dr * s1a + base_mask) >> base_shift); p[Order::G] = (value_type)((sg * dg + sg * d1a + dg * s1a + base_mask) >> base_shift); p[Order::B] = (value_type)((sb * db + sb * d1a + db * s1a + base_mask) >> base_shift); p[Order::A] = (value_type)(sa + p[Order::A] - ((sa * p[Order::A] + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_screen template<class ColorT, class Order> struct comp_op_rgba_screen { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = Sca + Dca - Sca.Dca // Da' = Sa + Da - Sa.Da 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 dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; calc_type da = p[Order::A]; p[Order::R] = (value_type)(sr + dr - ((sr * dr + base_mask) >> base_shift)); p[Order::G] = (value_type)(sg + dg - ((sg * dg + base_mask) >> base_shift)); p[Order::B] = (value_type)(sb + db - ((sb * db + base_mask) >> base_shift)); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_overlay template<class ColorT, class Order> struct comp_op_rgba_overlay { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // if 2.Dca < Da // Dca' = 2.Sca.Dca + Sca.(1 - Da) + Dca.(1 - Sa) // otherwise // Dca' = Sa.Da - 2.(Da - Dca).(Sa - Sca) + Sca.(1 - Da) + Dca.(1 - Sa) // // Da' = Sa + Da - Sa.Da 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 d1a = base_mask - p[Order::A]; calc_type s1a = base_mask - sa; calc_type dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; calc_type da = p[Order::A]; calc_type sada = sa * p[Order::A]; p[Order::R] = (value_type)(((2*dr < da) ? 2*sr*dr + sr*d1a + dr*s1a : sada - 2*(da - dr)*(sa - sr) + sr*d1a + dr*s1a + base_mask) >> base_shift); p[Order::G] = (value_type)(((2*dg < da) ? 2*sg*dg + sg*d1a + dg*s1a : sada - 2*(da - dg)*(sa - sg) + sg*d1a + dg*s1a + base_mask) >> base_shift); p[Order::B] = (value_type)(((2*db < da) ? 2*sb*db + sb*d1a + db*s1a : sada - 2*(da - db)*(sa - sb) + sb*d1a + db*s1a + base_mask) >> base_shift); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; template<class T> inline T sd_min(T a, T b) { return (a < b) ? a : b; } template<class T> inline T sd_max(T a, T b) { return (a > b) ? a : b; } //=====================================================comp_op_rgba_darken template<class ColorT, class Order> struct comp_op_rgba_darken { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = min(Sca.Da, Dca.Sa) + Sca.(1 - Da) + Dca.(1 - Sa) // Da' = Sa + Da - Sa.Da 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 d1a = base_mask - p[Order::A]; calc_type s1a = base_mask - sa; calc_type dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; calc_type da = p[Order::A]; p[Order::R] = (value_type)((sd_min(sr * da, dr * sa) + sr * d1a + dr * s1a + base_mask) >> base_shift); p[Order::G] = (value_type)((sd_min(sg * da, dg * sa) + sg * d1a + dg * s1a + base_mask) >> base_shift); p[Order::B] = (value_type)((sd_min(sb * da, db * sa) + sb * d1a + db * s1a + base_mask) >> base_shift); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_lighten template<class ColorT, class Order> struct comp_op_rgba_lighten { typedef ColorT color_type; typedef Order order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; // Dca' = max(Sca.Da, Dca.Sa) + Sca.(1 - Da) + Dca.(1 - Sa) // Da' = Sa + Da - Sa.Da 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 d1a = base_mask - p[Order::A]; calc_type s1a = base_mask - sa; calc_type dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; calc_type da = p[Order::A]; p[Order::R] = (value_type)((sd_max(sr * da, dr * sa) + sr * d1a + dr * s1a + base_mask) >> base_shift); p[Order::G] = (value_type)((sd_max(sg * da, dg * sa) + sg * d1a + dg * s1a + base_mask) >> base_shift); p[Order::B] = (value_type)((sd_max(sb * da, db * sa) + sb * d1a + db * s1a + base_mask) >> base_shift); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_color_dodge template<class ColorT, class Order> struct comp_op_rgba_color_dodge { 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 }; // if Sca.Da + Dca.Sa >= Sa.Da // Dca' = Sa.Da + Sca.(1 - Da) + Dca.(1 - Sa) // otherwise // Dca' = Dca.Sa/(1-Sca/Sa) + Sca.(1 - Da) + Dca.(1 - Sa) // // Da' = Sa + Da - Sa.Da 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 d1a = base_mask - p[Order::A]; calc_type s1a = base_mask - sa; calc_type dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; calc_type da = p[Order::A]; long_type drsa = dr * sa; long_type dgsa = dg * sa; long_type dbsa = db * sa; long_type srda = sr * da; long_type sgda = sg * da; long_type sbda = sb * da; long_type sada = sa * da; p[Order::R] = (value_type)((srda + drsa >= sada) ? (sada + sr * d1a + dr * s1a + base_mask) >> base_shift : drsa / (base_mask - (sr << base_shift) / sa) + ((sr * d1a + dr * s1a + base_mask) >> base_shift)); p[Order::G] = (value_type)((sgda + dgsa >= sada) ? (sada + sg * d1a + dg * s1a + base_mask) >> base_shift : dgsa / (base_mask - (sg << base_shift) / sa) + ((sg * d1a + dg * s1a + base_mask) >> base_shift)); p[Order::B] = (value_type)((sbda + dbsa >= sada) ? (sada + sb * d1a + db * s1a + base_mask) >> base_shift : dbsa / (base_mask - (sb << base_shift) / sa) + ((sb * d1a + db * s1a + base_mask) >> base_shift)); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_color_burn template<class ColorT, class Order> struct comp_op_rgba_color_burn { 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 }; // if Sca.Da + Dca.Sa <= Sa.Da // Dca' = Sca.(1 - Da) + Dca.(1 - Sa) // otherwise // Dca' = Sa.(Sca.Da + Dca.Sa - Sa.Da)/Sca + Sca.(1 - Da) + Dca.(1 - Sa) // // Da' = Sa + Da - Sa.Da 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 d1a = base_mask - p[Order::A]; calc_type s1a = base_mask - sa; calc_type dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; calc_type da = p[Order::A]; long_type drsa = dr * sa; long_type dgsa = dg * sa; long_type dbsa = db * sa; long_type srda = sr * da; long_type sgda = sg * da; long_type sbda = sb * da; long_type sada = sa * da; p[Order::R] = (value_type)(((srda + drsa <= sada) ? sr * d1a + dr * s1a : sa * (srda + drsa - sada) / sr + sr * d1a + dr * s1a + base_mask) >> base_shift); p[Order::G] = (value_type)(((sgda + dgsa <= sada) ? sg * d1a + dg * s1a : sa * (sgda + dgsa - sada) / sg + sg * d1a + dg * s1a + base_mask) >> base_shift); p[Order::B] = (value_type)(((sbda + dbsa <= sada) ? sb * d1a + db * s1a : sa * (sbda + dbsa - sada) / sb + sb * d1a + db * s1a + base_mask) >> base_shift); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_hard_light template<class ColorT, class Order> struct comp_op_rgba_hard_light { 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 }; // if 2.Sca < Sa // Dca' = 2.Sca.Dca + Sca.(1 - Da) + Dca.(1 - Sa) // otherwise // Dca' = Sa.Da - 2.(Da - Dca).(Sa - Sca) + Sca.(1 - Da) + Dca.(1 - Sa) // // Da' = Sa + Da - Sa.Da 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 d1a = base_mask - p[Order::A]; calc_type s1a = base_mask - sa; calc_type dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; calc_type da = p[Order::A]; calc_type sada = sa * da; p[Order::R] = (value_type)(((2*sr < sa) ? 2*sr*dr + sr*d1a + dr*s1a : sada - 2*(da - dr)*(sa - sr) + sr*d1a + dr*s1a + base_mask) >> base_shift); p[Order::G] = (value_type)(((2*sg < sa) ? 2*sg*dg + sg*d1a + dg*s1a : sada - 2*(da - dg)*(sa - sg) + sg*d1a + dg*s1a + base_mask) >> base_shift); p[Order::B] = (value_type)(((2*sb < sa) ? 2*sb*db + sb*d1a + db*s1a : sada - 2*(da - db)*(sa - sb) + sb*d1a + db*s1a + base_mask) >> base_shift); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_soft_light template<class ColorT, class Order> struct comp_op_rgba_soft_light { 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 }; // if 2.Sca < Sa // Dca' = Dca.(Sa + (1 - Dca/Da).(2.Sca - Sa)) + Sca.(1 - Da) + Dca.(1 - Sa) // otherwise if 8.Dca <= Da // Dca' = Dca.(Sa + (1 - Dca/Da).(2.Sca - Sa).(3 - 8.Dca/Da)) + Sca.(1 - Da) + Dca.(1 - Sa) // otherwise // Dca' = (Dca.Sa + ((Dca/Da)^(0.5).Da - Dca).(2.Sca - Sa)) + Sca.(1 - Da) + Dca.(1 - Sa) // // Da' = Sa + Da - Sa.Da static AGG_INLINE void blend_pix(value_type* p, unsigned r, unsigned g, unsigned b, unsigned a, unsigned cover) { double sr = double(r * cover) / (base_mask * 255); double sg = double(g * cover) / (base_mask * 255); double sb = double(b * cover) / (base_mask * 255); double sa = double(a * cover) / (base_mask * 255); if(sa > 0) { double dr = double(p[Order::R]) / base_mask; double dg = double(p[Order::G]) / base_mask; double db = double(p[Order::B]) / base_mask; double da = double(p[Order::A] ? p[Order::A] : 1) / base_mask; if(cover < 255) { a = (a * cover + 255) >> 8; } if(2*sr < sa) dr = dr*(sa + (1 - dr/da)*(2*sr - sa)) + sr*(1 - da) + dr*(1 - sa); else if(8*dr <= da) dr = dr*(sa + (1 - dr/da)*(2*sr - sa)*(3 - 8*dr/da)) + sr*(1 - da) + dr*(1 - sa); else dr = (dr*sa + (sqrt(dr/da)*da - dr)*(2*sr - sa)) + sr*(1 - da) + dr*(1 - sa); if(2*sg < sa) dg = dg*(sa + (1 - dg/da)*(2*sg - sa)) + sg*(1 - da) + dg*(1 - sa); else if(8*dg <= da) dg = dg*(sa + (1 - dg/da)*(2*sg - sa)*(3 - 8*dg/da)) + sg*(1 - da) + dg*(1 - sa); else dg = (dg*sa + (sqrt(dg/da)*da - dg)*(2*sg - sa)) + sg*(1 - da) + dg*(1 - sa); if(2*sb < sa) db = db*(sa + (1 - db/da)*(2*sb - sa)) + sb*(1 - da) + db*(1 - sa); else if(8*db <= da) db = db*(sa + (1 - db/da)*(2*sb - sa)*(3 - 8*db/da)) + sb*(1 - da) + db*(1 - sa); else db = (db*sa + (sqrt(db/da)*da - db)*(2*sb - sa)) + sb*(1 - da) + db*(1 - sa); p[Order::R] = (value_type)uround(dr * base_mask); p[Order::G] = (value_type)uround(dg * base_mask); p[Order::B] = (value_type)uround(db * base_mask); p[Order::A] = (value_type)(a + p[Order::A] - ((a * p[Order::A] + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_difference template<class ColorT, class Order> struct comp_op_rgba_difference { 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_scale = color_type::base_scale, base_mask = color_type::base_mask }; // Dca' = Sca + Dca - 2.min(Sca.Da, Dca.Sa) // Da' = Sa + Da - Sa.Da 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 dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; calc_type da = p[Order::A]; p[Order::R] = (value_type)(sr + dr - ((2 * sd_min(sr*da, dr*sa) + base_mask) >> base_shift)); p[Order::G] = (value_type)(sg + dg - ((2 * sd_min(sg*da, dg*sa) + base_mask) >> base_shift)); p[Order::B] = (value_type)(sb + db - ((2 * sd_min(sb*da, db*sa) + base_mask) >> base_shift)); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_exclusion template<class ColorT, class Order> struct comp_op_rgba_exclusion { 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 }; // Dca' = (Sca.Da + Dca.Sa - 2.Sca.Dca) + Sca.(1 - Da) + Dca.(1 - Sa) // Da' = Sa + Da - Sa.Da 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 d1a = base_mask - p[Order::A]; calc_type s1a = base_mask - sa; calc_type dr = p[Order::R]; calc_type dg = p[Order::G]; calc_type db = p[Order::B]; calc_type da = p[Order::A]; p[Order::R] = (value_type)((sr*da + dr*sa - 2*sr*dr + sr*d1a + dr*s1a + base_mask) >> base_shift); p[Order::G] = (value_type)((sg*da + dg*sa - 2*sg*dg + sg*d1a + dg*s1a + base_mask) >> base_shift); p[Order::B] = (value_type)((sb*da + db*sa - 2*sb*db + sb*d1a + db*s1a + base_mask) >> base_shift); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; //=====================================================comp_op_rgba_contrast template<class ColorT, class Order> struct comp_op_rgba_contrast { 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 }; 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; } long_type dr = p[Order::R]; long_type dg = p[Order::G]; long_type db = p[Order::B]; int da = p[Order::A]; long_type d2a = da >> 1; unsigned s2a = sa >> 1; int r = (int)((((dr - d2a) * int((sr - s2a)*2 + base_mask)) >> base_shift) + d2a); int g = (int)((((dg - d2a) * int((sg - s2a)*2 + base_mask)) >> base_shift) + d2a); int b = (int)((((db - d2a) * int((sb - s2a)*2 + base_mask)) >> base_shift) + d2a); r = (r < 0) ? 0 : r; g = (g < 0) ? 0 : g; b = (b < 0) ? 0 : b; p[Order::R] = (value_type)((r > da) ? da : r); p[Order::G] = (value_type)((g > da) ? da : g); p[Order::B] = (value_type)((b > da) ? da : b); } }; //=====================================================comp_op_rgba_invert template<class ColorT, class Order> struct comp_op_rgba_invert { 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 }; // Dca' = (Da - Dca) * Sa + Dca.(1 - Sa) // Da' = Sa + Da - Sa.Da static AGG_INLINE void blend_pix(value_type* p, unsigned sr, unsigned sg, unsigned sb, unsigned sa, unsigned cover) { sa = (sa * cover + 255) >> 8; if(sa) { calc_type da = p[Order::A]; calc_type dr = ((da - p[Order::R]) * sa + base_mask) >> base_shift; calc_type dg = ((da - p[Order::G]) * sa + base_mask) >> base_shift; calc_type db = ((da - p[Order::B]) * sa + base_mask) >> base_shift; calc_type s1a = base_mask - sa; p[Order::R] = (value_type)(dr + ((p[Order::R] * s1a + base_mask) >> base_shift)); p[Order::G] = (value_type)(dg + ((p[Order::G] * s1a + base_mask) >> base_shift)); p[Order::B] = (value_type)(db + ((p[Order::B] * s1a + base_mask) >> base_shift)); p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift)); } } }; //=================================================comp_op_rgba_invert_rgb template<class ColorT, class Order> struct comp_op_rgba_invert_rgb { 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 }; // Dca' = (Da - Dca) * Sca + Dca.(1 - Sa) // Da' = Sa + Da - Sa.Da 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]; calc_type dr = ((da - p[Order::R]) * sr + base_mask) >> base_shift; calc_type dg = ((da - p[Order::G]) * sg + base_mask) >> base_shift; calc_type db = ((da - p[Order::B]) * sb + base_mask) >> base_shift; calc_type s1a = base_mask - sa; p[Order::R] = (value_type)(dr + ((p[Order::R] * s1a + base_mask) >> base_shift)); p[Order::G] = (value_type)(dg + ((p[Order::G] * s1a + base_mask) >> base_shift)); p[Order::B] = (value_type)(db + ((p[Order::B] * s1a + base_mask) >> base_shift)); 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 { typedef typename ColorT::value_type value_type; typedef void (*comp_op_func_type)(value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned ca, unsigned cover); static comp_op_func_type g_comp_op_func[]; }; //==========================================================g_comp_op_func template<class ColorT, class Order> typename comp_op_table_rgba<ColorT, Order>::comp_op_func_type comp_op_table_rgba<ColorT, Order>::g_comp_op_func[] = { comp_op_rgba_clear <ColorT,Order>::blend_pix, comp_op_rgba_src <ColorT,Order>::blend_pix, comp_op_rgba_dst <ColorT,Order>::blend_pix, comp_op_rgba_src_over <ColorT,Order>::blend_pix, comp_op_rgba_dst_over <ColorT,Order>::blend_pix, comp_op_rgba_src_in <ColorT,Order>::blend_pix, comp_op_rgba_dst_in <ColorT,Order>::blend_pix, comp_op_rgba_src_out <ColorT,Order>::blend_pix, comp_op_rgba_dst_out <ColorT,Order>::blend_pix, comp_op_rgba_src_atop <ColorT,Order>::blend_pix, comp_op_rgba_dst_atop <ColorT,Order>::blend_pix, comp_op_rgba_xor <ColorT,Order>::blend_pix, comp_op_rgba_plus <ColorT,Order>::blend_pix, comp_op_rgba_minus <ColorT,Order>::blend_pix, comp_op_rgba_multiply <ColorT,Order>::blend_pix, comp_op_rgba_screen <ColorT,Order>::blend_pix, comp_op_rgba_overlay <ColorT,Order>::blend_pix, comp_op_rgba_darken <ColorT,Order>::blend_pix, comp_op_rgba_lighten <ColorT,Order>::blend_pix, comp_op_rgba_color_dodge<ColorT,Order>::blend_pix, comp_op_rgba_color_burn <ColorT,Order>::blend_pix, comp_op_rgba_hard_light <ColorT,Order>::blend_pix, comp_op_rgba_soft_light <ColorT,Order>::blend_pix, comp_op_rgba_difference <ColorT,Order>::blend_pix, comp_op_rgba_exclusion <ColorT,Order>::blend_pix, 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, 0 }; //==============================================================comp_op_e enum comp_op_e { comp_op_clear, //----comp_op_clear comp_op_src, //----comp_op_src comp_op_dst, //----comp_op_dst comp_op_src_over, //----comp_op_src_over comp_op_dst_over, //----comp_op_dst_over comp_op_src_in, //----comp_op_src_in comp_op_dst_in, //----comp_op_dst_in comp_op_src_out, //----comp_op_src_out comp_op_dst_out, //----comp_op_dst_out comp_op_src_atop, //----comp_op_src_atop comp_op_dst_atop, //----comp_op_dst_atop comp_op_xor, //----comp_op_xor comp_op_plus, //----comp_op_plus comp_op_minus, //----comp_op_minus comp_op_multiply, //----comp_op_multiply comp_op_screen, //----comp_op_screen comp_op_overlay, //----comp_op_overlay comp_op_darken, //----comp_op_darken comp_op_lighten, //----comp_op_lighten comp_op_color_dodge, //----comp_op_color_dodge comp_op_color_burn, //----comp_op_color_burn comp_op_hard_light, //----comp_op_hard_light comp_op_soft_light, //----comp_op_soft_light comp_op_difference, //----comp_op_difference comp_op_exclusion, //----comp_op_exclusion comp_op_contrast, //----comp_op_contrast comp_op_invert, //----comp_op_invert comp_op_invert_rgb, //----comp_op_invert_rgb end_of_comp_op_e }; //====================================================comp_op_adaptor_rgba template<class ColorT, class Order> struct comp_op_adaptor_rgba { typedef Order order_type; typedef ColorT color_type; typedef typename color_type::value_type value_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; static AGG_INLINE void blend_pix(unsigned op, value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned ca, unsigned cover) { comp_op_table_rgba<ColorT, Order>::g_comp_op_func[op] (p, (cr * ca + base_mask) >> base_shift, (cg * ca + base_mask) >> base_shift, (cb * ca + base_mask) >> base_shift, ca, cover); } }; //=========================================comp_op_adaptor_clip_to_dst_rgba template<class ColorT, class Order> struct comp_op_adaptor_clip_to_dst_rgba { typedef Order order_type; typedef ColorT color_type; typedef typename color_type::value_type value_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; static AGG_INLINE void blend_pix(unsigned op, value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned ca, unsigned cover) { cr = (cr * ca + base_mask) >> base_shift; cg = (cg * ca + base_mask) >> base_shift; cb = (cb * ca + base_mask) >> base_shift; unsigned da = p[Order::A]; comp_op_table_rgba<ColorT, Order>::g_comp_op_func[op] (p, (cr * da + base_mask) >> base_shift, (cg * da + base_mask) >> base_shift, (cb * da + base_mask) >> base_shift, (ca * da + base_mask) >> base_shift, cover); } }; //================================================comp_op_adaptor_rgba_pre template<class ColorT, class Order> struct comp_op_adaptor_rgba_pre { typedef Order order_type; typedef ColorT color_type; typedef typename color_type::value_type value_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; static AGG_INLINE void blend_pix(unsigned op, value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned ca, unsigned cover) { comp_op_table_rgba<ColorT, Order>::g_comp_op_func[op](p, cr, cg, cb, ca, cover); } }; //=====================================comp_op_adaptor_clip_to_dst_rgba_pre template<class ColorT, class Order> struct comp_op_adaptor_clip_to_dst_rgba_pre { typedef Order order_type; typedef ColorT color_type; typedef typename color_type::value_type value_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; static AGG_INLINE void blend_pix(unsigned op, value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned ca, unsigned cover) { unsigned da = p[Order::A]; comp_op_table_rgba<ColorT, Order>::g_comp_op_func[op] (p, (cr * da + base_mask) >> base_shift, (cg * da + base_mask) >> base_shift, (cb * da + base_mask) >> base_shift, (ca * da + base_mask) >> base_shift, cover); } }; //=======================================================comp_adaptor_rgba template<class BlenderPre> struct comp_adaptor_rgba { typedef typename BlenderPre::order_type order_type; typedef typename BlenderPre::color_type color_type; typedef typename color_type::value_type value_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; static AGG_INLINE void blend_pix(unsigned op, value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned ca, unsigned cover) { BlenderPre::blend_pix(p, (cr * ca + base_mask) >> base_shift, (cg * ca + base_mask) >> base_shift, (cb * ca + base_mask) >> base_shift, ca, cover); } }; //==========================================comp_adaptor_clip_to_dst_rgba template<class BlenderPre> struct comp_adaptor_clip_to_dst_rgba { typedef typename BlenderPre::order_type order_type; typedef typename BlenderPre::color_type color_type; typedef typename color_type::value_type value_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; static AGG_INLINE void blend_pix(unsigned op, value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned ca, unsigned cover) { cr = (cr * ca + base_mask) >> base_shift; cg = (cg * ca + base_mask) >> base_shift; cb = (cb * ca + base_mask) >> base_shift; unsigned da = p[order_type::A]; BlenderPre::blend_pix(p, (cr * da + base_mask) >> base_shift, (cg * da + base_mask) >> base_shift, (cb * da + base_mask) >> base_shift, (ca * da + base_mask) >> base_shift, cover); } }; //======================================comp_adaptor_clip_to_dst_rgba_pre template<class BlenderPre> struct comp_adaptor_clip_to_dst_rgba_pre { typedef typename BlenderPre::order_type order_type; typedef typename BlenderPre::color_type color_type; typedef typename color_type::value_type value_type; enum base_scale_e { base_shift = color_type::base_shift, base_mask = color_type::base_mask }; static AGG_INLINE void blend_pix(unsigned op, value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned ca, unsigned cover) { unsigned da = p[order_type::A]; BlenderPre::blend_pix(p, (cr * da + base_mask) >> base_shift, (cg * da + base_mask) >> base_shift, (cb * da + base_mask) >> base_shift, (ca * da + base_mask) >> base_shift, cover); } }; //===============================================copy_or_blend_rgba_wrapper template<class Blender> struct copy_or_blend_rgba_wrapper { typedef typename Blender::color_type color_type; typedef typename Blender::order_type order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_scale = color_type::base_scale, base_mask = color_type::base_mask }; //-------------------------------------------------------------------- static AGG_INLINE void copy_or_blend_pix(value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned alpha) { if(alpha) { if(alpha == base_mask) { p[order_type::R] = cr; p[order_type::G] = cg; p[order_type::B] = cb; p[order_type::A] = base_mask; } else { Blender::blend_pix(p, cr, cg, cb, alpha); } } } //-------------------------------------------------------------------- static AGG_INLINE void copy_or_blend_pix(value_type* p, unsigned cr, unsigned cg, unsigned cb, unsigned alpha, unsigned cover) { if(cover == 255) { copy_or_blend_pix(p, cr, cg, cb, alpha); } else { if(alpha) { alpha = (alpha * (cover + 1)) >> 8; if(alpha == base_mask) { p[order_type::R] = cr; p[order_type::G] = cg; p[order_type::B] = cb; p[order_type::A] = base_mask; } else { Blender::blend_pix(p, cr, cg, cb, alpha, cover); } } } } }; //=================================================pixfmt_alpha_blend_rgba template<class Blender, class RenBuf, class PixelT = int32u> class pixfmt_alpha_blend_rgba { public: typedef RenBuf rbuf_type; typedef typename rbuf_type::row_data row_data; typedef PixelT pixel_type; typedef Blender blender_type; typedef typename blender_type::color_type color_type; typedef typename blender_type::order_type order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; typedef copy_or_blend_rgba_wrapper<blender_type> cob_type; enum base_scale_e { base_shift = color_type::base_shift, base_scale = color_type::base_scale, base_mask = color_type::base_mask, pix_width = sizeof(pixel_type) }; //-------------------------------------------------------------------- pixfmt_alpha_blend_rgba() : m_rbuf(0) {} explicit pixfmt_alpha_blend_rgba(rbuf_type& rb) : m_rbuf(&rb) {} void attach(rbuf_type& rb) { m_rbuf = &rb; } //-------------------------------------------------------------------- template<class PixFmt> bool attach(PixFmt& pixf, int x1, int y1, int x2, int y2) { rect_i r(x1, y1, x2, y2); if(r.clip(rect_i(0, 0, pixf.width()-1, pixf.height()-1))) { int stride = pixf.stride(); m_rbuf->attach(pixf.pix_ptr(r.x1, stride < 0 ? r.y2 : r.y1), (r.x2 - r.x1) + 1, (r.y2 - r.y1) + 1, stride); return true; } return false; } //-------------------------------------------------------------------- AGG_INLINE unsigned width() const { return m_rbuf->width(); } AGG_INLINE unsigned height() const { return m_rbuf->height(); } AGG_INLINE int stride() const { return m_rbuf->stride(); } //-------------------------------------------------------------------- AGG_INLINE int8u* row_ptr(int y) { return m_rbuf->row_ptr(y); } AGG_INLINE const int8u* row_ptr(int y) const { return m_rbuf->row_ptr(y); } AGG_INLINE row_data row(int y) const { return m_rbuf->row(y); } //-------------------------------------------------------------------- AGG_INLINE int8u* pix_ptr(int x, int y) { return m_rbuf->row_ptr(y) + x * pix_width; } AGG_INLINE const int8u* pix_ptr(int x, int y) const { return m_rbuf->row_ptr(y) + x * pix_width; } //-------------------------------------------------------------------- AGG_INLINE static void make_pix(int8u* p, const color_type& c) { ((value_type*)p)[order_type::R] = c.r; ((value_type*)p)[order_type::G] = c.g; ((value_type*)p)[order_type::B] = c.b; ((value_type*)p)[order_type::A] = c.a; } //-------------------------------------------------------------------- AGG_INLINE color_type pixel(int x, int y) const { const value_type* p = (const value_type*)m_rbuf->row_ptr(y); if(p) { p += x << 2; return color_type(p[order_type::R], p[order_type::G], p[order_type::B], p[order_type::A]); } return color_type::no_color(); } //-------------------------------------------------------------------- AGG_INLINE void copy_pixel(int x, int y, const color_type& c) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, 1) + (x << 2); p[order_type::R] = c.r; p[order_type::G] = c.g; p[order_type::B] = c.b; p[order_type::A] = c.a; } //-------------------------------------------------------------------- AGG_INLINE void blend_pixel(int x, int y, const color_type& c, int8u cover) { cob_type::copy_or_blend_pix( (value_type*)m_rbuf->row_ptr(x, y, 1) + (x << 2), c.r, c.g, c.b, c.a, cover); } //-------------------------------------------------------------------- AGG_INLINE void copy_hline(int x, int y, unsigned len, const color_type& c) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2); pixel_type v; ((value_type*)&v)[order_type::R] = c.r; ((value_type*)&v)[order_type::G] = c.g; ((value_type*)&v)[order_type::B] = c.b; ((value_type*)&v)[order_type::A] = c.a; do { *(pixel_type*)p = v; p += 4; } while(--len); } //-------------------------------------------------------------------- AGG_INLINE void copy_vline(int x, int y, unsigned len, const color_type& c) { pixel_type v; ((value_type*)&v)[order_type::R] = c.r; ((value_type*)&v)[order_type::G] = c.g; ((value_type*)&v)[order_type::B] = c.b; ((value_type*)&v)[order_type::A] = c.a; do { value_type* p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); *(pixel_type*)p = v; } while(--len); } //-------------------------------------------------------------------- void blend_hline(int x, int y, unsigned len, const color_type& c, int8u cover) { if (c.a) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2); calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8; if(alpha == base_mask) { pixel_type v; ((value_type*)&v)[order_type::R] = c.r; ((value_type*)&v)[order_type::G] = c.g; ((value_type*)&v)[order_type::B] = c.b; ((value_type*)&v)[order_type::A] = c.a; do { *(pixel_type*)p = v; p += 4; } while(--len); } else { if(cover == 255) { do { blender_type::blend_pix(p, c.r, c.g, c.b, alpha); p += 4; } while(--len); } else { do { blender_type::blend_pix(p, c.r, c.g, c.b, alpha, cover); p += 4; } while(--len); } } } } //-------------------------------------------------------------------- void blend_vline(int x, int y, unsigned len, const color_type& c, int8u cover) { if (c.a) { value_type* p; calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8; if(alpha == base_mask) { pixel_type v; ((value_type*)&v)[order_type::R] = c.r; ((value_type*)&v)[order_type::G] = c.g; ((value_type*)&v)[order_type::B] = c.b; ((value_type*)&v)[order_type::A] = c.a; do { p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); *(pixel_type*)p = v; } while(--len); } else { if(cover == 255) { do { p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); blender_type::blend_pix(p, c.r, c.g, c.b, alpha); } while(--len); } else { do { p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); blender_type::blend_pix(p, c.r, c.g, c.b, alpha, cover); } while(--len); } } } } //-------------------------------------------------------------------- void blend_solid_hspan(int x, int y, unsigned len, const color_type& c, const int8u* covers) { if (c.a) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2); do { calc_type alpha = (calc_type(c.a) * (calc_type(*covers) + 1)) >> 8; if(alpha == base_mask) { p[order_type::R] = c.r; p[order_type::G] = c.g; p[order_type::B] = c.b; p[order_type::A] = base_mask; } else { blender_type::blend_pix(p, c.r, c.g, c.b, alpha, *covers); } p += 4; ++covers; } while(--len); } } //-------------------------------------------------------------------- void blend_solid_vspan(int x, int y, unsigned len, const color_type& c, const int8u* covers) { if (c.a) { do { value_type* p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); calc_type alpha = (calc_type(c.a) * (calc_type(*covers) + 1)) >> 8; if(alpha == base_mask) { p[order_type::R] = c.r; p[order_type::G] = c.g; p[order_type::B] = c.b; p[order_type::A] = base_mask; } else { blender_type::blend_pix(p, c.r, c.g, c.b, alpha, *covers); } ++covers; } while(--len); } } //-------------------------------------------------------------------- void copy_color_hspan(int x, int y, unsigned len, const color_type* colors) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2); do { p[order_type::R] = colors->r; p[order_type::G] = colors->g; p[order_type::B] = colors->b; p[order_type::A] = colors->a; ++colors; p += 4; } while(--len); } //-------------------------------------------------------------------- void copy_color_vspan(int x, int y, unsigned len, const color_type* colors) { do { value_type* p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); p[order_type::R] = colors->r; p[order_type::G] = colors->g; p[order_type::B] = colors->b; p[order_type::A] = colors->a; ++colors; } while(--len); } //-------------------------------------------------------------------- void blend_color_hspan(int x, int y, unsigned len, const color_type* colors, const int8u* covers, int8u cover) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2); if(covers) { do { cob_type::copy_or_blend_pix(p, colors->r, colors->g, colors->b, colors->a, *covers++); p += 4; ++colors; } while(--len); } else { if(cover == 255) { do { cob_type::copy_or_blend_pix(p, colors->r, colors->g, colors->b, colors->a); p += 4; ++colors; } while(--len); } else { do { cob_type::copy_or_blend_pix(p, colors->r, colors->g, colors->b, colors->a, cover); p += 4; ++colors; } while(--len); } } } //-------------------------------------------------------------------- void blend_color_vspan(int x, int y, unsigned len, const color_type* colors, const int8u* covers, int8u cover) { value_type* p; if(covers) { do { p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); cob_type::copy_or_blend_pix(p, colors->r, colors->g, colors->b, colors->a, *covers++); ++colors; } while(--len); } else { if(cover == 255) { do { p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); cob_type::copy_or_blend_pix(p, colors->r, colors->g, colors->b, colors->a); ++colors; } while(--len); } else { do { p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); cob_type::copy_or_blend_pix(p, colors->r, colors->g, colors->b, colors->a, cover); ++colors; } while(--len); } } } //-------------------------------------------------------------------- template<class Function> void for_each_pixel(Function f) { unsigned y; for(y = 0; y < height(); ++y) { row_data r = m_rbuf->row(y); if(r.ptr) { unsigned len = r.x2 - r.x1 + 1; value_type* p = (value_type*)m_rbuf->row_ptr(r.x1, y, len) + (r.x1 << 2); do { f(p); p += 4; } while(--len); } } } //-------------------------------------------------------------------- void premultiply() { for_each_pixel(multiplier_rgba<color_type, order_type>::premultiply); } //-------------------------------------------------------------------- void demultiply() { for_each_pixel(multiplier_rgba<color_type, order_type>::demultiply); } //-------------------------------------------------------------------- template<class GammaLut> void apply_gamma_dir(const GammaLut& g) { for_each_pixel(apply_gamma_dir_rgba<color_type, order_type, GammaLut>(g)); } //-------------------------------------------------------------------- template<class GammaLut> void apply_gamma_inv(const GammaLut& g) { for_each_pixel(apply_gamma_inv_rgba<color_type, order_type, GammaLut>(g)); } //-------------------------------------------------------------------- template<class RenBuf2> void copy_from(const RenBuf2& from, int xdst, int ydst, int xsrc, int ysrc, unsigned len) { const int8u* p = from.row_ptr(ysrc); if(p) { memmove(m_rbuf->row_ptr(xdst, ydst, len) + xdst * pix_width, p + xsrc * pix_width, len * pix_width); } } //-------------------------------------------------------------------- template<class SrcPixelFormatRenderer> void blend_from(const SrcPixelFormatRenderer& from, int xdst, int ydst, int xsrc, int ysrc, unsigned len, int8u cover) { typedef typename SrcPixelFormatRenderer::order_type src_order; const value_type* psrc = (value_type*)from.row_ptr(ysrc); if(psrc) { psrc += xsrc << 2; value_type* pdst = (value_type*)m_rbuf->row_ptr(xdst, ydst, len) + (xdst << 2); int incp = 4; if(xdst > xsrc) { psrc += (len-1) << 2; pdst += (len-1) << 2; incp = -4; } if(cover == 255) { do { cob_type::copy_or_blend_pix(pdst, psrc[src_order::R], psrc[src_order::G], psrc[src_order::B], psrc[src_order::A]); psrc += incp; pdst += incp; } while(--len); } else { do { cob_type::copy_or_blend_pix(pdst, psrc[src_order::R], psrc[src_order::G], psrc[src_order::B], psrc[src_order::A], cover); psrc += incp; pdst += incp; } while(--len); } } } //-------------------------------------------------------------------- template<class SrcPixelFormatRenderer> void blend_from_color(const SrcPixelFormatRenderer& from, const color_type& color, int xdst, int ydst, int xsrc, int ysrc, unsigned len, int8u cover) { typedef typename SrcPixelFormatRenderer::value_type src_value_type; const src_value_type* psrc = (src_value_type*)from.row_ptr(ysrc); if(psrc) { value_type* pdst = (value_type*)m_rbuf->row_ptr(xdst, ydst, len) + (xdst << 2); do { cob_type::copy_or_blend_pix(pdst, color.r, color.g, color.b, color.a, (*psrc * cover + base_mask) >> base_shift); ++psrc; pdst += 4; } while(--len); } } //-------------------------------------------------------------------- template<class SrcPixelFormatRenderer> void blend_from_lut(const SrcPixelFormatRenderer& from, const color_type* color_lut, int xdst, int ydst, int xsrc, int ysrc, unsigned len, int8u cover) { typedef typename SrcPixelFormatRenderer::value_type src_value_type; const src_value_type* psrc = (src_value_type*)from.row_ptr(ysrc); if(psrc) { value_type* pdst = (value_type*)m_rbuf->row_ptr(xdst, ydst, len) + (xdst << 2); if(cover == 255) { do { const color_type& color = color_lut[*psrc]; cob_type::copy_or_blend_pix(pdst, color.r, color.g, color.b, color.a); ++psrc; pdst += 4; } while(--len); } else { do { const color_type& color = color_lut[*psrc]; cob_type::copy_or_blend_pix(pdst, color.r, color.g, color.b, color.a, cover); ++psrc; pdst += 4; } while(--len); } } } private: rbuf_type* m_rbuf; }; //================================================pixfmt_custom_blend_rgba template<class Blender, class RenBuf> class pixfmt_custom_blend_rgba { public: typedef RenBuf rbuf_type; typedef typename rbuf_type::row_data row_data; typedef Blender blender_type; typedef typename blender_type::color_type color_type; typedef typename blender_type::order_type order_type; typedef typename color_type::value_type value_type; typedef typename color_type::calc_type calc_type; enum base_scale_e { base_shift = color_type::base_shift, base_scale = color_type::base_scale, base_mask = color_type::base_mask, pix_width = sizeof(value_type) * 4 }; //-------------------------------------------------------------------- pixfmt_custom_blend_rgba() : m_rbuf(0), m_comp_op(3) {} explicit pixfmt_custom_blend_rgba(rbuf_type& rb, unsigned comp_op=3) : m_rbuf(&rb), m_comp_op(comp_op) {} void attach(rbuf_type& rb) { m_rbuf = &rb; } //-------------------------------------------------------------------- template<class PixFmt> bool attach(PixFmt& pixf, int x1, int y1, int x2, int y2) { rect_i r(x1, y1, x2, y2); if(r.clip(rect_i(0, 0, pixf.width()-1, pixf.height()-1))) { int stride = pixf.stride(); m_rbuf->attach(pixf.pix_ptr(r.x1, stride < 0 ? r.y2 : r.y1), (r.x2 - r.x1) + 1, (r.y2 - r.y1) + 1, stride); return true; } return false; } //-------------------------------------------------------------------- AGG_INLINE unsigned width() const { return m_rbuf->width(); } AGG_INLINE unsigned height() const { return m_rbuf->height(); } AGG_INLINE int stride() const { return m_rbuf->stride(); } //-------------------------------------------------------------------- AGG_INLINE int8u* row_ptr(int y) { return m_rbuf->row_ptr(y); } AGG_INLINE const int8u* row_ptr(int y) const { return m_rbuf->row_ptr(y); } AGG_INLINE row_data row(int y) const { return m_rbuf->row(y); } //-------------------------------------------------------------------- AGG_INLINE int8u* pix_ptr(int x, int y) { return m_rbuf->row_ptr(y) + x * pix_width; } AGG_INLINE const int8u* pix_ptr(int x, int y) const { return m_rbuf->row_ptr(y) + x * pix_width; } //-------------------------------------------------------------------- void comp_op(unsigned op) { m_comp_op = op; } unsigned comp_op() const { return m_comp_op; } //-------------------------------------------------------------------- AGG_INLINE static void make_pix(int8u* p, const color_type& c) { ((value_type*)p)[order_type::R] = c.r; ((value_type*)p)[order_type::G] = c.g; ((value_type*)p)[order_type::B] = c.b; ((value_type*)p)[order_type::A] = c.a; } //-------------------------------------------------------------------- color_type pixel(int x, int y) const { const value_type* p = (value_type*)m_rbuf->row_ptr(y) + (x << 2); return color_type(p[order_type::R], p[order_type::G], p[order_type::B], p[order_type::A]); } //-------------------------------------------------------------------- void copy_pixel(int x, int y, const color_type& c) { blender_type::blend_pix( m_comp_op, (value_type*)m_rbuf->row_ptr(x, y, 1) + (x << 2), c.r, c.g, c.b, c.a, 255); } //-------------------------------------------------------------------- void blend_pixel(int x, int y, const color_type& c, int8u cover) { blender_type::blend_pix( m_comp_op, (value_type*)m_rbuf->row_ptr(x, y, 1) + (x << 2), c.r, c.g, c.b, c.a, cover); } //-------------------------------------------------------------------- void copy_hline(int x, int y, unsigned len, const color_type& c) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2);; do { blender_type::blend_pix(m_comp_op, p, c.r, c.g, c.b, c.a, 255); p += 4; } while(--len); } //-------------------------------------------------------------------- void copy_vline(int x, int y, unsigned len, const color_type& c) { do { blender_type::blend_pix( m_comp_op, (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2), c.r, c.g, c.b, c.a, 255); } while(--len); } //-------------------------------------------------------------------- void blend_hline(int x, int y, unsigned len, const color_type& c, int8u cover) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2); do { blender_type::blend_pix(m_comp_op, p, c.r, c.g, c.b, c.a, cover); p += 4; } while(--len); } //-------------------------------------------------------------------- void blend_vline(int x, int y, unsigned len, const color_type& c, int8u cover) { do { blender_type::blend_pix( m_comp_op, (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2), c.r, c.g, c.b, c.a, cover); } while(--len); } //-------------------------------------------------------------------- void blend_solid_hspan(int x, int y, unsigned len, const color_type& c, const int8u* covers) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2); do { blender_type::blend_pix(m_comp_op, p, c.r, c.g, c.b, c.a, *covers++); p += 4; } while(--len); } //-------------------------------------------------------------------- void blend_solid_vspan(int x, int y, unsigned len, const color_type& c, const int8u* covers) { do { blender_type::blend_pix( m_comp_op, (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2), c.r, c.g, c.b, c.a, *covers++); } while(--len); } //-------------------------------------------------------------------- void copy_color_hspan(int x, int y, unsigned len, const color_type* colors) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2); do { p[order_type::R] = colors->r; p[order_type::G] = colors->g; p[order_type::B] = colors->b; p[order_type::A] = colors->a; ++colors; p += 4; } while(--len); } //-------------------------------------------------------------------- void copy_color_vspan(int x, int y, unsigned len, const color_type* colors) { do { value_type* p = (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2); p[order_type::R] = colors->r; p[order_type::G] = colors->g; p[order_type::B] = colors->b; p[order_type::A] = colors->a; ++colors; } while(--len); } //-------------------------------------------------------------------- void blend_color_hspan(int x, int y, unsigned len, const color_type* colors, const int8u* covers, int8u cover) { value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + (x << 2); do { blender_type::blend_pix(m_comp_op, p, colors->r, colors->g, colors->b, colors->a, covers ? *covers++ : cover); p += 4; ++colors; } while(--len); } //-------------------------------------------------------------------- void blend_color_vspan(int x, int y, unsigned len, const color_type* colors, const int8u* covers, int8u cover) { do { blender_type::blend_pix( m_comp_op, (value_type*)m_rbuf->row_ptr(x, y++, 1) + (x << 2), colors->r, colors->g, colors->b, colors->a, covers ? *covers++ : cover); ++colors; } while(--len); } //-------------------------------------------------------------------- template<class Function> void for_each_pixel(Function f) { unsigned y; for(y = 0; y < height(); ++y) { row_data r = m_rbuf->row(y); if(r.ptr) { unsigned len = r.x2 - r.x1 + 1; value_type* p = (value_type*)m_rbuf->row_ptr(r.x1, y, len) + (r.x1 << 2); do { f(p); p += 4; } while(--len); } } } //-------------------------------------------------------------------- void premultiply() { for_each_pixel(multiplier_rgba<color_type, order_type>::premultiply); } //-------------------------------------------------------------------- void demultiply() { for_each_pixel(multiplier_rgba<color_type, order_type>::demultiply); } //-------------------------------------------------------------------- template<class GammaLut> void apply_gamma_dir(const GammaLut& g) { for_each_pixel(apply_gamma_dir_rgba<color_type, order_type, GammaLut>(g)); } //-------------------------------------------------------------------- template<class GammaLut> void apply_gamma_inv(const GammaLut& g) { for_each_pixel(apply_gamma_inv_rgba<color_type, order_type, GammaLut>(g)); } //-------------------------------------------------------------------- template<class RenBuf2> void copy_from(const RenBuf2& from, int xdst, int ydst, int xsrc, int ysrc, unsigned len) { const int8u* p = from.row_ptr(ysrc); if(p) { memmove(m_rbuf->row_ptr(xdst, ydst, len) + xdst * pix_width, p + xsrc * pix_width, len * pix_width); } } //-------------------------------------------------------------------- template<class SrcPixelFormatRenderer> void blend_from(const SrcPixelFormatRenderer& from, int xdst, int ydst, int xsrc, int ysrc, unsigned len, int8u cover) { typedef typename SrcPixelFormatRenderer::order_type src_order; const value_type* psrc = (const value_type*)from.row_ptr(ysrc); if(psrc) { psrc += xsrc << 2; value_type* pdst = (value_type*)m_rbuf->row_ptr(xdst, ydst, len) + (xdst << 2); int incp = 4; if(xdst > xsrc) { psrc += (len-1) << 2; pdst += (len-1) << 2; incp = -4; } do { blender_type::blend_pix(m_comp_op, pdst, psrc[src_order::R], psrc[src_order::G], psrc[src_order::B], psrc[src_order::A], cover); psrc += incp; pdst += incp; } while(--len); } } //-------------------------------------------------------------------- template<class SrcPixelFormatRenderer> void blend_from_color(const SrcPixelFormatRenderer& from, const color_type& color, int xdst, int ydst, int xsrc, int ysrc, unsigned len, int8u cover) { typedef typename SrcPixelFormatRenderer::value_type src_value_type; const src_value_type* psrc = (src_value_type*)from.row_ptr(ysrc); if(psrc) { value_type* pdst = (value_type*)m_rbuf->row_ptr(xdst, ydst, len) + (xdst << 2); do { blender_type::blend_pix(m_comp_op, pdst, color.r, color.g, color.b, color.a, (*psrc * cover + base_mask) >> base_shift); ++psrc; pdst += 4; } while(--len); } } //-------------------------------------------------------------------- template<class SrcPixelFormatRenderer> void blend_from_lut(const SrcPixelFormatRenderer& from, const color_type* color_lut, int xdst, int ydst, int xsrc, int ysrc, unsigned len, int8u cover) { typedef typename SrcPixelFormatRenderer::value_type src_value_type; const src_value_type* psrc = (src_value_type*)from.row_ptr(ysrc); if(psrc) { value_type* pdst = (value_type*)m_rbuf->row_ptr(xdst, ydst, len) + (xdst << 2); do { const color_type& color = color_lut[*psrc]; blender_type::blend_pix(m_comp_op, pdst, color.r, color.g, color.b, color.a, cover); ++psrc; pdst += 4; } while(--len); } } private: rbuf_type* m_rbuf; unsigned m_comp_op; }; //----------------------------------------------------------------------- typedef blender_rgba<rgba8, order_rgba> blender_rgba32; //----blender_rgba32 typedef blender_rgba<rgba8, order_argb> blender_argb32; //----blender_argb32 typedef blender_rgba<rgba8, order_abgr> blender_abgr32; //----blender_abgr32 typedef blender_rgba<rgba8, order_bgra> blender_bgra32; //----blender_bgra32 typedef blender_rgba_pre<rgba8, order_rgba> blender_rgba32_pre; //----blender_rgba32_pre typedef blender_rgba_pre<rgba8, order_argb> blender_argb32_pre; //----blender_argb32_pre typedef blender_rgba_pre<rgba8, order_abgr> blender_abgr32_pre; //----blender_abgr32_pre typedef blender_rgba_pre<rgba8, order_bgra> blender_bgra32_pre; //----blender_bgra32_pre typedef blender_rgba_plain<rgba8, order_rgba> blender_rgba32_plain; //----blender_rgba32_plain typedef blender_rgba_plain<rgba8, order_argb> blender_argb32_plain; //----blender_argb32_plain typedef blender_rgba_plain<rgba8, order_abgr> blender_abgr32_plain; //----blender_abgr32_plain typedef blender_rgba_plain<rgba8, order_bgra> blender_bgra32_plain; //----blender_bgra32_plain typedef blender_rgba<rgba16, order_rgba> blender_rgba64; //----blender_rgba64 typedef blender_rgba<rgba16, order_argb> blender_argb64; //----blender_argb64 typedef blender_rgba<rgba16, order_abgr> blender_abgr64; //----blender_abgr64 typedef blender_rgba<rgba16, order_bgra> blender_bgra64; //----blender_bgra64 typedef blender_rgba_pre<rgba16, order_rgba> blender_rgba64_pre; //----blender_rgba64_pre typedef blender_rgba_pre<rgba16, order_argb> blender_argb64_pre; //----blender_argb64_pre typedef blender_rgba_pre<rgba16, order_abgr> blender_abgr64_pre; //----blender_abgr64_pre typedef blender_rgba_pre<rgba16, order_bgra> blender_bgra64_pre; //----blender_bgra64_pre //----------------------------------------------------------------------- typedef int32u pixel32_type; typedef pixfmt_alpha_blend_rgba<blender_rgba32, rendering_buffer, pixel32_type> pixfmt_rgba32; //----pixfmt_rgba32 typedef pixfmt_alpha_blend_rgba<blender_argb32, rendering_buffer, pixel32_type> pixfmt_argb32; //----pixfmt_argb32 typedef pixfmt_alpha_blend_rgba<blender_abgr32, rendering_buffer, pixel32_type> pixfmt_abgr32; //----pixfmt_abgr32 typedef pixfmt_alpha_blend_rgba<blender_bgra32, rendering_buffer, pixel32_type> pixfmt_bgra32; //----pixfmt_bgra32 typedef pixfmt_alpha_blend_rgba<blender_rgba32_pre, rendering_buffer, pixel32_type> pixfmt_rgba32_pre; //----pixfmt_rgba32_pre typedef pixfmt_alpha_blend_rgba<blender_argb32_pre, rendering_buffer, pixel32_type> pixfmt_argb32_pre; //----pixfmt_argb32_pre typedef pixfmt_alpha_blend_rgba<blender_abgr32_pre, rendering_buffer, pixel32_type> pixfmt_abgr32_pre; //----pixfmt_abgr32_pre typedef pixfmt_alpha_blend_rgba<blender_bgra32_pre, rendering_buffer, pixel32_type> pixfmt_bgra32_pre; //----pixfmt_bgra32_pre typedef pixfmt_alpha_blend_rgba<blender_rgba32_plain, rendering_buffer, pixel32_type> pixfmt_rgba32_plain; //----pixfmt_rgba32_plain typedef pixfmt_alpha_blend_rgba<blender_argb32_plain, rendering_buffer, pixel32_type> pixfmt_argb32_plain; //----pixfmt_argb32_plain typedef pixfmt_alpha_blend_rgba<blender_abgr32_plain, rendering_buffer, pixel32_type> pixfmt_abgr32_plain; //----pixfmt_abgr32_plain typedef pixfmt_alpha_blend_rgba<blender_bgra32_plain, rendering_buffer, pixel32_type> pixfmt_bgra32_plain; //----pixfmt_bgra32_plain struct pixel64_type { int16u c[4]; }; typedef pixfmt_alpha_blend_rgba<blender_rgba64, rendering_buffer, pixel64_type> pixfmt_rgba64; //----pixfmt_rgba64 typedef pixfmt_alpha_blend_rgba<blender_argb64, rendering_buffer, pixel64_type> pixfmt_argb64; //----pixfmt_argb64 typedef pixfmt_alpha_blend_rgba<blender_abgr64, rendering_buffer, pixel64_type> pixfmt_abgr64; //----pixfmt_abgr64 typedef pixfmt_alpha_blend_rgba<blender_bgra64, rendering_buffer, pixel64_type> pixfmt_bgra64; //----pixfmt_bgra64 typedef pixfmt_alpha_blend_rgba<blender_rgba64_pre, rendering_buffer, pixel64_type> pixfmt_rgba64_pre; //----pixfmt_rgba64_pre typedef pixfmt_alpha_blend_rgba<blender_argb64_pre, rendering_buffer, pixel64_type> pixfmt_argb64_pre; //----pixfmt_argb64_pre typedef pixfmt_alpha_blend_rgba<blender_abgr64_pre, rendering_buffer, pixel64_type> pixfmt_abgr64_pre; //----pixfmt_abgr64_pre typedef pixfmt_alpha_blend_rgba<blender_bgra64_pre, rendering_buffer, pixel64_type> pixfmt_bgra64_pre; //----pixfmt_bgra64_pre } #endif |