sij/mapnik
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
mapnik/deps/agg/include/agg_pixfmt_rgba.h

3164 lines
126 KiB
C++
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// 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
// http://www.w3.org/TR/SVGCompositing/
// if Sca == 0 and Dca == Da
// Dca' = Sa × Da + Sca × (1 - Da) + Dca × (1 - Sa)
// = Sa × Da + Dca × (1 - Sa)
// = Da = Dca
// otherwise if Sca == 0
// Dca' = Sca × (1 - Da) + Dca × (1 - Sa)
// = Dca × (1 - Sa)
// otherwise if Sca > 0
// Dca' = Sa × Da - Sa × Da × min(1, (1 - Dca/Da) × Sa/Sca) + Sca × (1 - Da) + Dca × (1 - Sa)
// = Sa × Da × (1 - min(1, (1 - Dca/Da) × Sa/Sca)) + Sca × (1 - Da) + Dca × (1 - Sa)
// sa * da * (255 - std::min(255, (255 - p[0]/da)*(sa/(sc*sa)) +
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 :
(sr > 0 ? sa * (srda + drsa - sada) / sr + sr * d1a + dr * s1a + base_mask : 0)) >> base_shift);
p[Order::G] = (value_type)(((sgda + dgsa <= sada) ?
sg * d1a + dg * s1a :
(sg > 0 ? sa * (sgda + dgsa - sada) / sg + sg * d1a + dg * s1a + base_mask : 0)) >> base_shift);
p[Order::B] = (value_type)(((sbda + dbsa <= sada) ?
sb * d1a + db * s1a :
(sb > 0 ? sa * (sbda + dbsa - sada) / sb + sb * d1a + db * s1a + base_mask : 0)) >> 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));
}
}
};
// merge grain (GIMP)
// E = I + M - 128
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
};
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 > 0)
{
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] = dr < 0 ? 0 : (dr > 255 ? 255 : dr);
p[Order::G] = dg < 0 ? 0 : (dg > 255 ? 255 : dg);
p[Order::B] = db < 0 ? 0 : (db > 255 ? 255 : db);
p[Order::A] = (value_type)(sa + da - ((sa * da + base_mask) >> base_shift));
}
}
};
// colorize alpha values
// TODO - consider moving to image-filters:
// https://github.com/mapnik/mapnik/issues/1371
/*
template <typename ColorT, typename Order>
struct comp_op_rgba_colorize_alpha
{
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,
// source rgb
unsigned sr, unsigned sg, unsigned sb,
// source alpha and opacity
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 > 0)
{
p[Order::R] = (value_type)(((0 + base_mask) >> base_shift));
p[Order::G] = (value_type)(((0 + base_mask) >> base_shift));
p[Order::B] = (value_type)(((0 + base_mask) >> base_shift));
p[Order::A] = (value_type)(sa + p[Order::A] - ((sa * p[Order::A] + base_mask) >> base_shift));
// http://en.wikipedia.org/wiki/File:HSV-RGB-comparison.svg
if (p[Order::A] < 64) {
p[Order::G] = ((p[Order::A] - 64) * 4);
p[Order::B] = 255;
}
if (p[Order::A] >= 64 && p[Order::A] < 128) {
p[Order::G] = 255;
p[Order::B] = 255 - ((p[Order::A] - 64) * 4);
}
if (p[Order::A] >= 128 && p[Order::A] < 192) {
p[Order::R] = ((p[Order::A] - 128) * 4);
p[Order::G] = 255;
}
if (p[Order::A] >= 192) {
p[Order::R] = 255;
p[Order::G] = 255 - ((p[Order::A] - 192) * 4);
}
}
}
};
*/
// grain extract (GIMP)
// E = I - M + 128
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
};
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;
}
}
};
template <typename ColorT, typename Order>
struct comp_op_rgba_hue
{
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);
};
template <typename ColorT, typename Order>
struct comp_op_rgba_saturation
{
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);
};
template <typename ColorT, typename Order>
struct comp_op_rgba_color
{
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);
};
template <typename ColorT, typename Order>
struct comp_op_rgba_value
{
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);
};
//======================================================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,
comp_op_rgba_grain_merge<ColorT,Order>::blend_pix,
comp_op_rgba_grain_extract<ColorT,Order>::blend_pix,
comp_op_rgba_hue<ColorT,Order>::blend_pix,
comp_op_rgba_saturation<ColorT,Order>::blend_pix,
comp_op_rgba_color<ColorT,Order>::blend_pix,
comp_op_rgba_value<ColorT,Order>::blend_pix,
//comp_op_rgba_colorize_alpha<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
comp_op_grain_merge, //----comp_op_grain_merge_rgb
comp_op_grain_extract, //----comp_op_grain_extract_rgb
comp_op_hue, //----comp_op_hue
comp_op_saturation, //----comp_op_saturation
comp_op_color, //----comp_op_color
comp_op_value, //----comp_op_value
//comp_op_colorize_alpha,//----comp_op_colorize_alpha
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_hspan_alpha(int x, int y, unsigned len,
const color_type* colors,
value_type alpha,
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 * alpha + 255) >> 8,
(colors->g * alpha + 255) >> 8,
(colors->b * alpha + 255) >> 8,
(colors->a * alpha + 255) >> 8,
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
Reference in a new issue View git blame Copy permalink