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mapnik/agg/include/agg_pixfmt_rgb_packed.h

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new build system
2006-01-31 23:09:52 +00:00
//----------------------------------------------------------------------------
// 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_RGB_PACKED_INCLUDED
#define AGG_PIXFMT_RGB_PACKED_INCLUDED
#include <string.h>
#include "agg_basics.h"
#include "agg_color_rgba.h"
#include "agg_rendering_buffer.h"
namespace agg
{
//=========================================================blender_rgb555
struct blender_rgb555
{
typedef rgba8 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int16u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type rgb = *p;
calc_type r = (rgb >> 7) & 0xF8;
calc_type g = (rgb >> 2) & 0xF8;
calc_type b = (rgb << 3) & 0xF8;
*p = (pixel_type)
(((((cr - r) * alpha + (r << 8)) >> 1) & 0x7C00) |
((((cg - g) * alpha + (g << 8)) >> 6) & 0x03E0) |
(((cb - b) * alpha + (b << 8)) >> 11) | 0x8000);
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xF8) << 7) |
((g & 0xF8) << 2) |
(b >> 3) | 0x8000);
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 7) & 0xF8,
(p >> 2) & 0xF8,
(p << 3) & 0xF8);
}
};
//=====================================================blender_rgb555_pre
struct blender_rgb555_pre
{
typedef rgba8 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int16u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned cover)
{
alpha = color_type::base_mask - alpha;
pixel_type rgb = *p;
calc_type r = (rgb >> 7) & 0xF8;
calc_type g = (rgb >> 2) & 0xF8;
calc_type b = (rgb << 3) & 0xF8;
*p = (pixel_type)
((((r * alpha + cr * cover) >> 1) & 0x7C00) |
(((g * alpha + cg * cover) >> 6) & 0x03E0) |
((b * alpha + cb * cover) >> 11) | 0x8000);
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xF8) << 7) |
((g & 0xF8) << 2) |
(b >> 3) | 0x8000);
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 7) & 0xF8,
(p >> 2) & 0xF8,
(p << 3) & 0xF8);
}
};
//=====================================================blender_rgb555_gamma
template<class Gamma> class blender_rgb555_gamma
{
public:
typedef rgba8 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int16u pixel_type;
typedef Gamma gamma_type;
blender_rgb555_gamma() : m_gamma(0) {}
void gamma(const gamma_type& g) { m_gamma = &g; }
AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type rgb = *p;
calc_type r = m_gamma->dir((rgb >> 7) & 0xF8);
calc_type g = m_gamma->dir((rgb >> 2) & 0xF8);
calc_type b = m_gamma->dir((rgb << 3) & 0xF8);
*p = (pixel_type)
(((m_gamma->inv(((m_gamma->dir(cr) - r) * alpha + (r << 8)) >> 8) << 7) & 0x7C00) |
((m_gamma->inv(((m_gamma->dir(cg) - g) * alpha + (g << 8)) >> 8) << 2) & 0x03E0) |
(m_gamma->inv(((m_gamma->dir(cb) - b) * alpha + (b << 8)) >> 8) >> 3) | 0x8000);
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xF8) << 7) |
((g & 0xF8) << 2) |
(b >> 3) | 0x8000);
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 7) & 0xF8,
(p >> 2) & 0xF8,
(p << 3) & 0xF8);
}
private:
const Gamma* m_gamma;
};
//=========================================================blender_rgb565
struct blender_rgb565
{
typedef rgba8 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int16u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type rgb = *p;
calc_type r = (rgb >> 8) & 0xF8;
calc_type g = (rgb >> 3) & 0xFC;
calc_type b = (rgb << 3) & 0xF8;
*p = (pixel_type)
(((((cr - r) * alpha + (r << 8)) ) & 0xF800) |
((((cg - g) * alpha + (g << 8)) >> 5) & 0x07E0) |
(((cb - b) * alpha + (b << 8)) >> 11));
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3));
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 8) & 0xF8,
(p >> 3) & 0xFC,
(p << 3) & 0xF8);
}
};
//=====================================================blender_rgb565_pre
struct blender_rgb565_pre
{
typedef rgba8 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int16u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned cover)
{
alpha = color_type::base_mask - alpha;
pixel_type rgb = *p;
calc_type r = (rgb >> 8) & 0xF8;
calc_type g = (rgb >> 3) & 0xFC;
calc_type b = (rgb << 3) & 0xF8;
*p = (pixel_type)
((((r * alpha + cr * cover) ) & 0xF800) |
(((g * alpha + cg * cover) >> 5 ) & 0x07E0) |
((b * alpha + cb * cover) >> 11));
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3));
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 8) & 0xF8,
(p >> 3) & 0xFC,
(p << 3) & 0xF8);
}
};
//=====================================================blender_rgb565_gamma
template<class Gamma> class blender_rgb565_gamma
{
public:
typedef rgba8 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int16u pixel_type;
typedef Gamma gamma_type;
blender_rgb565_gamma() : m_gamma(0) {}
void gamma(const gamma_type& g) { m_gamma = &g; }
AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type rgb = *p;
calc_type r = m_gamma->dir((rgb >> 8) & 0xF8);
calc_type g = m_gamma->dir((rgb >> 3) & 0xFC);
calc_type b = m_gamma->dir((rgb << 3) & 0xF8);
*p = (pixel_type)
(((m_gamma->inv(((m_gamma->dir(cr) - r) * alpha + (r << 8)) >> 8) << 8) & 0xF800) |
((m_gamma->inv(((m_gamma->dir(cg) - g) * alpha + (g << 8)) >> 8) << 3) & 0x07E0) |
(m_gamma->inv(((m_gamma->dir(cb) - b) * alpha + (b << 8)) >> 8) >> 3));
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3));
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 8) & 0xF8,
(p >> 3) & 0xFC,
(p << 3) & 0xF8);
}
private:
const Gamma* m_gamma;
};
//=====================================================blender_rgbAAA
struct blender_rgbAAA
{
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type rgb = *p;
calc_type r = (rgb >> 14) & 0xFFC0;
calc_type g = (rgb >> 4) & 0xFFC0;
calc_type b = (rgb << 6) & 0xFFC0;
*p = (pixel_type)
(((((cr - r) * alpha + (r << 16)) >> 2) & 0x3FF00000) |
((((cg - g) * alpha + (g << 16)) >> 12) & 0x000FFC00) |
(((cb - b) * alpha + (b << 16)) >> 22) | 0xC0000000);
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xFFC0) << 14) |
((g & 0xFFC0) << 4) |
(b >> 6) | 0xC0000000);
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 14) & 0xFFC0,
(p >> 4) & 0xFFC0,
(p << 6) & 0xFFC0);
}
};
//==================================================blender_rgbAAA_pre
struct blender_rgbAAA_pre
{
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned cover)
{
alpha = color_type::base_mask - alpha;
cover = (cover + 1) << (color_type::base_shift - 8);
pixel_type rgb = *p;
calc_type r = (rgb >> 14) & 0xFFC0;
calc_type g = (rgb >> 4) & 0xFFC0;
calc_type b = (rgb << 6) & 0xFFC0;
*p = (pixel_type)
((((r * alpha + cr * cover) >> 2) & 0x3FF00000) |
(((g * alpha + cg * cover) >> 12) & 0x000FFC00) |
((b * alpha + cb * cover) >> 22) | 0xC0000000);
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xFFC0) << 14) |
((g & 0xFFC0) << 4) |
(b >> 6) | 0xC0000000);
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 14) & 0xFFC0,
(p >> 4) & 0xFFC0,
(p << 6) & 0xFFC0);
}
};
//=================================================blender_rgbAAA_gamma
template<class Gamma> class blender_rgbAAA_gamma
{
public:
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
typedef Gamma gamma_type;
blender_rgbAAA_gamma() : m_gamma(0) {}
void gamma(const gamma_type& g) { m_gamma = &g; }
AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type rgb = *p;
calc_type r = m_gamma->dir((rgb >> 14) & 0xFFC0);
calc_type g = m_gamma->dir((rgb >> 4) & 0xFFC0);
calc_type b = m_gamma->dir((rgb << 6) & 0xFFC0);
*p = (pixel_type)
(((m_gamma->inv(((m_gamma->dir(cr) - r) * alpha + (r << 16)) >> 16) << 14) & 0x3FF00000) |
((m_gamma->inv(((m_gamma->dir(cg) - g) * alpha + (g << 16)) >> 16) << 4 ) & 0x000FFC00) |
(m_gamma->inv(((m_gamma->dir(cb) - b) * alpha + (b << 16)) >> 16) >> 6 ) | 0xC0000000);
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xFFC0) << 14) |
((g & 0xFFC0) << 4) |
(b >> 6) | 0xC0000000);
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 14) & 0xFFC0,
(p >> 4) & 0xFFC0,
(p << 6) & 0xFFC0);
}
private:
const Gamma* m_gamma;
};
//=====================================================blender_bgrAAA
struct blender_bgrAAA
{
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type bgr = *p;
calc_type b = (bgr >> 14) & 0xFFC0;
calc_type g = (bgr >> 4) & 0xFFC0;
calc_type r = (bgr << 6) & 0xFFC0;
*p = (pixel_type)
(((((cb - b) * alpha + (b << 16)) >> 2) & 0x3FF00000) |
((((cg - g) * alpha + (g << 16)) >> 12) & 0x000FFC00) |
(((cr - r) * alpha + (r << 16)) >> 22) | 0xC0000000);
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((b & 0xFFC0) << 14) |
((g & 0xFFC0) << 4) |
(r >> 6) | 0xC0000000);
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p << 6) & 0xFFC0,
(p >> 4) & 0xFFC0,
(p >> 14) & 0xFFC0);
}
};
//=================================================blender_bgrAAA_pre
struct blender_bgrAAA_pre
{
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned cover)
{
alpha = color_type::base_mask - alpha;
cover = (cover + 1) << (color_type::base_shift - 8);
pixel_type bgr = *p;
calc_type b = (bgr >> 14) & 0xFFC0;
calc_type g = (bgr >> 4) & 0xFFC0;
calc_type r = (bgr << 6) & 0xFFC0;
*p = (pixel_type)
((((b * alpha + cb * cover) >> 2) & 0x3FF00000) |
(((g * alpha + cg * cover) >> 12) & 0x000FFC00) |
((r * alpha + cr * cover) >> 22) | 0xC0000000);
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((b & 0xFFC0) << 14) |
((g & 0xFFC0) << 4) |
(r >> 6) | 0xC0000000);
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p << 6) & 0xFFC0,
(p >> 4) & 0xFFC0,
(p >> 14) & 0xFFC0);
}
};
//=================================================blender_bgrAAA_gamma
template<class Gamma> class blender_bgrAAA_gamma
{
public:
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
typedef Gamma gamma_type;
blender_bgrAAA_gamma() : m_gamma(0) {}
void gamma(const gamma_type& g) { m_gamma = &g; }
AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type bgr = *p;
calc_type b = m_gamma->dir((bgr >> 14) & 0xFFC0);
calc_type g = m_gamma->dir((bgr >> 4) & 0xFFC0);
calc_type r = m_gamma->dir((bgr << 6) & 0xFFC0);
*p = (pixel_type)
(((m_gamma->inv(((m_gamma->dir(cb) - b) * alpha + (b << 16)) >> 16) << 14) & 0x3FF00000) |
((m_gamma->inv(((m_gamma->dir(cg) - g) * alpha + (g << 16)) >> 16) << 4 ) & 0x000FFC00) |
(m_gamma->inv(((m_gamma->dir(cr) - r) * alpha + (r << 16)) >> 16) >> 6 ) | 0xC0000000);
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((b & 0xFFC0) << 14) |
((g & 0xFFC0) << 4) |
(r >> 6) | 0xC0000000);
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p << 6) & 0xFFC0,
(p >> 4) & 0xFFC0,
(p >> 14) & 0xFFC0);
}
private:
const Gamma* m_gamma;
};
//=====================================================blender_rgbBBA
struct blender_rgbBBA
{
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type rgb = *p;
calc_type r = (rgb >> 16) & 0xFFE0;
calc_type g = (rgb >> 5) & 0xFFE0;
calc_type b = (rgb << 6) & 0xFFC0;
*p = (pixel_type)
(((((cr - r) * alpha + (r << 16)) ) & 0xFFE00000) |
((((cg - g) * alpha + (g << 16)) >> 11) & 0x001FFC00) |
(((cb - b) * alpha + (b << 16)) >> 22));
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xFFE0) << 16) | ((g & 0xFFE0) << 5) | (b >> 6));
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 16) & 0xFFE0,
(p >> 5) & 0xFFE0,
(p << 6) & 0xFFC0);
}
};
//=================================================blender_rgbBBA_pre
struct blender_rgbBBA_pre
{
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned cover)
{
alpha = color_type::base_mask - alpha;
cover = (cover + 1) << (color_type::base_shift - 8);
pixel_type rgb = *p;
calc_type r = (rgb >> 16) & 0xFFE0;
calc_type g = (rgb >> 5) & 0xFFE0;
calc_type b = (rgb << 6) & 0xFFC0;
*p = (pixel_type)
((((r * alpha + cr * cover) ) & 0xFFE00000) |
(((g * alpha + cg * cover) >> 11) & 0x001FFC00) |
((b * alpha + cb * cover) >> 22));
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xFFE0) << 16) | ((g & 0xFFE0) << 5) | (b >> 6));
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 16) & 0xFFE0,
(p >> 5) & 0xFFE0,
(p << 6) & 0xFFC0);
}
};
//=================================================blender_rgbBBA_gamma
template<class Gamma> class blender_rgbBBA_gamma
{
public:
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
typedef Gamma gamma_type;
blender_rgbBBA_gamma() : m_gamma(0) {}
void gamma(const gamma_type& g) { m_gamma = &g; }
AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type rgb = *p;
calc_type r = m_gamma->dir((rgb >> 16) & 0xFFE0);
calc_type g = m_gamma->dir((rgb >> 5) & 0xFFE0);
calc_type b = m_gamma->dir((rgb << 6) & 0xFFC0);
*p = (pixel_type)
(((m_gamma->inv(((m_gamma->dir(cr) - r) * alpha + (r << 16)) >> 16) << 16) & 0xFFE00000) |
((m_gamma->inv(((m_gamma->dir(cg) - g) * alpha + (g << 16)) >> 16) << 5 ) & 0x001FFC00) |
(m_gamma->inv(((m_gamma->dir(cb) - b) * alpha + (b << 16)) >> 16) >> 6 ));
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((r & 0xFFE0) << 16) | ((g & 0xFFE0) << 5) | (b >> 6));
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p >> 16) & 0xFFE0,
(p >> 5) & 0xFFE0,
(p << 6) & 0xFFC0);
}
private:
const Gamma* m_gamma;
};
//=====================================================blender_bgrABB
struct blender_bgrABB
{
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type bgr = *p;
calc_type b = (bgr >> 16) & 0xFFC0;
calc_type g = (bgr >> 6) & 0xFFE0;
calc_type r = (bgr << 5) & 0xFFE0;
*p = (pixel_type)
(((((cb - b) * alpha + (b << 16)) ) & 0xFFC00000) |
((((cg - g) * alpha + (g << 16)) >> 10) & 0x003FF800) |
(((cr - r) * alpha + (r << 16)) >> 21));
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((b & 0xFFC0) << 16) | ((g & 0xFFE0) << 6) | (r >> 5));
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p << 5) & 0xFFE0,
(p >> 6) & 0xFFE0,
(p >> 16) & 0xFFC0);
}
};
//=================================================blender_bgrABB_pre
struct blender_bgrABB_pre
{
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
static AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned cover)
{
alpha = color_type::base_mask - alpha;
cover = (cover + 1) << (color_type::base_shift - 8);
pixel_type bgr = *p;
calc_type b = (bgr >> 16) & 0xFFC0;
calc_type g = (bgr >> 6) & 0xFFE0;
calc_type r = (bgr << 5) & 0xFFE0;
*p = (pixel_type)
((((b * alpha + cb * cover) ) & 0xFFC00000) |
(((g * alpha + cg * cover) >> 10) & 0x003FF800) |
((r * alpha + cr * cover) >> 21));
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((b & 0xFFC0) << 16) | ((g & 0xFFE0) << 6) | (r >> 5));
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p << 5) & 0xFFE0,
(p >> 6) & 0xFFE0,
(p >> 16) & 0xFFC0);
}
};
//=================================================blender_bgrABB_gamma
template<class Gamma> class blender_bgrABB_gamma
{
public:
typedef rgba16 color_type;
typedef color_type::value_type value_type;
typedef color_type::calc_type calc_type;
typedef int32u pixel_type;
typedef Gamma gamma_type;
blender_bgrABB_gamma() : m_gamma(0) {}
void gamma(const gamma_type& g) { m_gamma = &g; }
AGG_INLINE void blend_pix(pixel_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned)
{
pixel_type bgr = *p;
calc_type b = m_gamma->dir((bgr >> 16) & 0xFFC0);
calc_type g = m_gamma->dir((bgr >> 6) & 0xFFE0);
calc_type r = m_gamma->dir((bgr << 5) & 0xFFE0);
*p = (pixel_type)
(((m_gamma->inv(((m_gamma->dir(cb) - b) * alpha + (b << 16)) >> 16) << 16) & 0xFFC00000) |
((m_gamma->inv(((m_gamma->dir(cg) - g) * alpha + (g << 16)) >> 16) << 6 ) & 0x003FF800) |
(m_gamma->inv(((m_gamma->dir(cr) - r) * alpha + (r << 16)) >> 16) >> 5 ));
}
static AGG_INLINE pixel_type make_pix(unsigned r, unsigned g, unsigned b)
{
return (pixel_type)(((b & 0xFFC0) << 16) | ((g & 0xFFE0) << 6) | (r >> 5));
}
static AGG_INLINE color_type make_color(pixel_type p)
{
return color_type((p << 5) & 0xFFE0,
(p >> 6) & 0xFFE0,
(p >> 16) & 0xFFC0);
}
private:
const Gamma* m_gamma;
};
//===========================================pixfmt_alpha_blend_rgb_packed
template<class Blender, class RenBuf> class pixfmt_alpha_blend_rgb_packed
{
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::pixel_type pixel_type;
typedef int order_type; // A fake one
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(pixel_type)
};
private:
//--------------------------------------------------------------------
AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c, unsigned cover)
{
if (c.a)
{
calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
if(alpha == base_mask)
{
*p = m_blender.make_pix(c.r, c.g, c.b);
}
else
{
m_blender.blend_pix(p, c.r, c.g, c.b, alpha, cover);
}
}
}
public:
//--------------------------------------------------------------------
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explicit pixfmt_alpha_blend_rgb_packed(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;
}
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Blender& blender() { return m_blender; }
//--------------------------------------------------------------------
AGG_INLINE unsigned width() const { return m_rbuf->width(); }
AGG_INLINE unsigned height() const { return m_rbuf->height(); }
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AGG_INLINE int stride() const { return m_rbuf->stride(); }
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//--------------------------------------------------------------------
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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); }
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//--------------------------------------------------------------------
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AGG_INLINE int8u* pix_ptr(int x, int y)
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{
return m_rbuf->row_ptr(y) + x * pix_width;
}
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AGG_INLINE const int8u* pix_ptr(int x, int y) const
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{
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return m_rbuf->row_ptr(y) + x * pix_width;
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}
//--------------------------------------------------------------------
AGG_INLINE void make_pix(int8u* p, const color_type& c)
{
*(pixel_type*)p = m_blender.make_pix(c.r, c.g, c.b);
}
//--------------------------------------------------------------------
AGG_INLINE color_type pixel(int x, int y) const
{
return m_blender.make_color(((pixel_type*)m_rbuf->row_ptr(y))[x]);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_pixel(int x, int y, const color_type& c)
{
((pixel_type*)
m_rbuf->row_ptr(x, y, 1))[x] =
m_blender.make_pix(c.r, c.g, c.b);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_pixel(int x, int y, const color_type& c, int8u cover)
{
copy_or_blend_pix((pixel_type*)m_rbuf->row_ptr(x, y, 1) + x, c, cover);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_hline(int x, int y,
unsigned len,
const color_type& c)
{
pixel_type* p = (pixel_type*)m_rbuf->row_ptr(x, y, len) + x;
pixel_type v = m_blender.make_pix(c.r, c.g, c.b);
do
{
*p++ = v;
}
while(--len);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_vline(int x, int y,
unsigned len,
const color_type& c)
{
pixel_type v = m_blender.make_pix(c.r, c.g, c.b);
do
{
pixel_type* p = (pixel_type*)m_rbuf->row_ptr(x, y++, 1) + x;
*p = v;
}
while(--len);
}
//--------------------------------------------------------------------
void blend_hline(int x, int y,
unsigned len,
const color_type& c,
int8u cover)
{
if (c.a)
{
pixel_type* p = (pixel_type*)m_rbuf->row_ptr(x, y, len) + x;
calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
if(alpha == base_mask)
{
pixel_type v = m_blender.make_pix(c.r, c.g, c.b);
do
{
*p++ = v;
}
while(--len);
}
else
{
do
{
m_blender.blend_pix(p, c.r, c.g, c.b, alpha, cover);
++p;
}
while(--len);
}
}
}
//--------------------------------------------------------------------
void blend_vline(int x, int y,
unsigned len,
const color_type& c,
int8u cover)
{
if (c.a)
{
calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
if(alpha == base_mask)
{
pixel_type v = m_blender.make_pix(c.r, c.g, c.b);
do
{
((pixel_type*)m_rbuf->row_ptr(x, y++, 1))[x] = v;
}
while(--len);
}
else
{
do
{
m_blender.blend_pix(
(pixel_type*)m_rbuf->row_ptr(x, y++, 1),
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)
{
pixel_type* p = (pixel_type*)m_rbuf->row_ptr(x, y, len) + x;
do
{
copy_or_blend_pix(p, c, *covers++);
++p;
}
while(--len);
}
//--------------------------------------------------------------------
void blend_solid_vspan(int x, int y,
unsigned len,
const color_type& c,
const int8u* covers)
{
do
{
copy_or_blend_pix((pixel_type*)m_rbuf->row_ptr(x, y++, 1) + x,
c, *covers++);
}
while(--len);
}
//--------------------------------------------------------------------
void copy_color_hspan(int x, int y,
unsigned len,
const color_type* colors)
{
pixel_type* p = (pixel_type*)m_rbuf->row_ptr(x, y, len) + x;
do
{
*p++ = m_blender.make_pix(colors->r, colors->g, colors->b);
++colors;
}
while(--len);
}
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//--------------------------------------------------------------------
void copy_color_vspan(int x, int y,
unsigned len,
const color_type* colors)
{
do
{
pixel_type* p = (pixel_type*)m_rbuf->row_ptr(x, y++, 1) + x;
*p = m_blender.make_pix(colors->r, colors->g, colors->b);
++colors;
}
while(--len);
}
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//--------------------------------------------------------------------
void blend_color_hspan(int x, int y,
unsigned len,
const color_type* colors,
const int8u* covers,
int8u cover)
{
pixel_type* p = (pixel_type*)m_rbuf->row_ptr(x, y, len) + x;
do
{
copy_or_blend_pix(p++, *colors++, covers ? *covers++ : cover);
}
while(--len);
}
//--------------------------------------------------------------------
void blend_color_vspan(int x, int y,
unsigned len,
const color_type* colors,
const int8u* covers,
int8u cover)
{
do
{
copy_or_blend_pix((pixel_type*)m_rbuf->row_ptr(x, y++, 1) + x,
*colors++, covers ? *covers++ : cover);
}
while(--len);
}
//--------------------------------------------------------------------
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 * 4;
pixel_type* pdst =
(pixel_type*)m_rbuf->row_ptr(xdst, ydst, len) + xdst;
do
{
value_type alpha = psrc[src_order::A];
if(alpha)
{
if(alpha == base_mask && cover == 255)
{
*pdst = m_blender.make_pix(psrc[src_order::R],
psrc[src_order::G],
psrc[src_order::B]);
}
else
{
m_blender.blend_pix(pdst,
psrc[src_order::R],
psrc[src_order::G],
psrc[src_order::B],
alpha,
cover);
}
}
psrc += 4;
++pdst;
}
while(--len);
}
}
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//--------------------------------------------------------------------
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)
{
pixel_type* pdst =
(pixel_type*)m_rbuf->row_ptr(xdst, ydst, len) + xdst;
do
{
m_blender.blend_pix(pdst,
color.r, color.g, color.b, color.a,
cover);
++psrc;
++pdst;
}
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)
{
pixel_type* pdst =
(pixel_type*)m_rbuf->row_ptr(xdst, ydst, len) + xdst;
do
{
const color_type& color = color_lut[*psrc];
m_blender.blend_pix(pdst,
color.r, color.g, color.b, color.a,
cover);
++psrc;
++pdst;
}
while(--len);
}
}
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private:
rbuf_type* m_rbuf;
Blender m_blender;
};
typedef pixfmt_alpha_blend_rgb_packed<blender_rgb555, rendering_buffer> pixfmt_rgb555; //----pixfmt_rgb555
typedef pixfmt_alpha_blend_rgb_packed<blender_rgb565, rendering_buffer> pixfmt_rgb565; //----pixfmt_rgb565
typedef pixfmt_alpha_blend_rgb_packed<blender_rgb555_pre, rendering_buffer> pixfmt_rgb555_pre; //----pixfmt_rgb555_pre
typedef pixfmt_alpha_blend_rgb_packed<blender_rgb565_pre, rendering_buffer> pixfmt_rgb565_pre; //----pixfmt_rgb565_pre
typedef pixfmt_alpha_blend_rgb_packed<blender_rgbAAA, rendering_buffer> pixfmt_rgbAAA; //----pixfmt_rgbAAA
typedef pixfmt_alpha_blend_rgb_packed<blender_bgrAAA, rendering_buffer> pixfmt_bgrAAA; //----pixfmt_bgrAAA
typedef pixfmt_alpha_blend_rgb_packed<blender_rgbBBA, rendering_buffer> pixfmt_rgbBBA; //----pixfmt_rgbBBA
typedef pixfmt_alpha_blend_rgb_packed<blender_bgrABB, rendering_buffer> pixfmt_bgrABB; //----pixfmt_bgrABB
typedef pixfmt_alpha_blend_rgb_packed<blender_rgbAAA_pre, rendering_buffer> pixfmt_rgbAAA_pre; //----pixfmt_rgbAAA_pre
typedef pixfmt_alpha_blend_rgb_packed<blender_bgrAAA_pre, rendering_buffer> pixfmt_bgrAAA_pre; //----pixfmt_bgrAAA_pre
typedef pixfmt_alpha_blend_rgb_packed<blender_rgbBBA_pre, rendering_buffer> pixfmt_rgbBBA_pre; //----pixfmt_rgbBBA_pre
typedef pixfmt_alpha_blend_rgb_packed<blender_bgrABB_pre, rendering_buffer> pixfmt_bgrABB_pre; //----pixfmt_bgrABB_pre
//-----------------------------------------------------pixfmt_rgb555_gamma
template<class Gamma> class pixfmt_rgb555_gamma :
public pixfmt_alpha_blend_rgb_packed<blender_rgb555_gamma<Gamma>,
rendering_buffer>
{
public:
pixfmt_rgb555_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb_packed<blender_rgb555_gamma<Gamma>,
rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
//-----------------------------------------------------pixfmt_rgb565_gamma
template<class Gamma> class pixfmt_rgb565_gamma :
public pixfmt_alpha_blend_rgb_packed<blender_rgb565_gamma<Gamma>, rendering_buffer>
{
public:
pixfmt_rgb565_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb_packed<blender_rgb565_gamma<Gamma>, rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
//-----------------------------------------------------pixfmt_rgbAAA_gamma
template<class Gamma> class pixfmt_rgbAAA_gamma :
public pixfmt_alpha_blend_rgb_packed<blender_rgbAAA_gamma<Gamma>,
rendering_buffer>
{
public:
pixfmt_rgbAAA_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb_packed<blender_rgbAAA_gamma<Gamma>,
rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
//-----------------------------------------------------pixfmt_bgrAAA_gamma
template<class Gamma> class pixfmt_bgrAAA_gamma :
public pixfmt_alpha_blend_rgb_packed<blender_bgrAAA_gamma<Gamma>,
rendering_buffer>
{
public:
pixfmt_bgrAAA_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb_packed<blender_bgrAAA_gamma<Gamma>,
rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
//-----------------------------------------------------pixfmt_rgbBBA_gamma
template<class Gamma> class pixfmt_rgbBBA_gamma :
public pixfmt_alpha_blend_rgb_packed<blender_rgbBBA_gamma<Gamma>,
rendering_buffer>
{
public:
pixfmt_rgbBBA_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb_packed<blender_rgbBBA_gamma<Gamma>,
rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
//-----------------------------------------------------pixfmt_bgrABB_gamma
template<class Gamma> class pixfmt_bgrABB_gamma :
public pixfmt_alpha_blend_rgb_packed<blender_bgrABB_gamma<Gamma>,
rendering_buffer>
{
public:
pixfmt_bgrABB_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb_packed<blender_bgrABB_gamma<Gamma>,
rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
}
#endif
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