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			995 lines
		
	
	
	
		
			37 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			995 lines
		
	
	
	
		
			37 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| //----------------------------------------------------------------------------
 | |
| // Anti-Grain Geometry - Version 2.4
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| // Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
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| //
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| // Permission to copy, use, modify, sell and distribute this software 
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| // is granted provided this copyright notice appears in all copies. 
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| // This software is provided "as is" without express or implied
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| // warranty, and with no claim as to its suitability for any purpose.
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| //
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| //----------------------------------------------------------------------------
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| // Contact: mcseem@antigrain.com
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| //          mcseemagg@yahoo.com
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| //          http://www.antigrain.com
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| //----------------------------------------------------------------------------
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| //
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| // Adaptation for high precision colors has been sponsored by 
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| // Liberty Technology Systems, Inc., visit http://lib-sys.com
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| //
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| // Liberty Technology Systems, Inc. is the provider of
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| // PostScript and PDF technology for software developers.
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| // 
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| //----------------------------------------------------------------------------
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| 
 | |
| #ifndef AGG_PIXFMT_RGB_INCLUDED
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| #define AGG_PIXFMT_RGB_INCLUDED
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| 
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| #include <string.h>
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| #include "agg_pixfmt_base.h"
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| #include "agg_rendering_buffer.h"
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| 
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| namespace agg
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| {
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| 
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|     //=====================================================apply_gamma_dir_rgb
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|     template<class ColorT, class Order, class GammaLut> class apply_gamma_dir_rgb
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|     {
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|     public:
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|         typedef typename ColorT::value_type value_type;
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| 
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|         apply_gamma_dir_rgb(const GammaLut& gamma) : m_gamma(gamma) {}
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| 
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|         AGG_INLINE void operator () (value_type* p)
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|         {
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|             p[Order::R] = m_gamma.dir(p[Order::R]);
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|             p[Order::G] = m_gamma.dir(p[Order::G]);
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|             p[Order::B] = m_gamma.dir(p[Order::B]);
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|         }
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| 
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|     private:
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|         const GammaLut& m_gamma;
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|     };
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| 
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| 
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| 
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|     //=====================================================apply_gamma_inv_rgb
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|     template<class ColorT, class Order, class GammaLut> class apply_gamma_inv_rgb
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|     {
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|     public:
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|         typedef typename ColorT::value_type value_type;
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| 
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|         apply_gamma_inv_rgb(const GammaLut& gamma) : m_gamma(gamma) {}
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| 
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|         AGG_INLINE void operator () (value_type* p)
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|         {
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|             p[Order::R] = m_gamma.inv(p[Order::R]);
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|             p[Order::G] = m_gamma.inv(p[Order::G]);
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|             p[Order::B] = m_gamma.inv(p[Order::B]);
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|         }
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| 
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|     private:
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|         const GammaLut& m_gamma;
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|     };
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| 
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| 
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|     //=========================================================blender_rgb
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|     template<class ColorT, class Order> 
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|     struct blender_rgb
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|     {
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|         typedef ColorT color_type;
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|         typedef Order order_type;
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|         typedef typename color_type::value_type value_type;
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|         typedef typename color_type::calc_type calc_type;
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|         typedef typename color_type::long_type long_type;
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| 
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|         // Blend pixels using the non-premultiplied form of Alvy-Ray Smith's
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|         // compositing function. Since the render buffer is opaque we skip the
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|         // initial premultiply and final demultiply.
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| 
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|         //--------------------------------------------------------------------
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|         static AGG_INLINE void blend_pix(value_type* p, 
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|             value_type cr, value_type cg, value_type cb, value_type alpha, cover_type cover)
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|         {
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|             blend_pix(p, cr, cg, cb, color_type::mult_cover(alpha, cover));
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|         }
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|         
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|         //--------------------------------------------------------------------
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|         static AGG_INLINE void blend_pix(value_type* p, 
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|             value_type cr, value_type cg, value_type cb, value_type alpha)
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|         {
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|             p[Order::R] = color_type::lerp(p[Order::R], cr, alpha);
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|             p[Order::G] = color_type::lerp(p[Order::G], cg, alpha);
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|             p[Order::B] = color_type::lerp(p[Order::B], cb, alpha);
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|         }
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|     };
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| 
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|     //======================================================blender_rgb_pre
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|     template<class ColorT, class Order> 
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|     struct blender_rgb_pre
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|     {
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|         typedef ColorT color_type;
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|         typedef Order order_type;
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|         typedef typename color_type::value_type value_type;
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|         typedef typename color_type::calc_type calc_type;
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|         typedef typename color_type::long_type long_type;
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| 
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|         // Blend pixels using the premultiplied form of Alvy-Ray Smith's
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|         // compositing function. 
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| 
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|         //--------------------------------------------------------------------
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|         static AGG_INLINE void blend_pix(value_type* p, 
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|             value_type cr, value_type cg, value_type cb, value_type alpha, cover_type cover)
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|         {
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|             blend_pix(p, 
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|                 color_type::mult_cover(cr, cover), 
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|                 color_type::mult_cover(cg, cover), 
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|                 color_type::mult_cover(cb, cover), 
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|                 color_type::mult_cover(alpha, cover));
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         static AGG_INLINE void blend_pix(value_type* p, 
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|             value_type cr, value_type cg, value_type cb, value_type alpha)
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|         {
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|             p[Order::R] = color_type::prelerp(p[Order::R], cr, alpha);
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|             p[Order::G] = color_type::prelerp(p[Order::G], cg, alpha);
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|             p[Order::B] = color_type::prelerp(p[Order::B], cb, alpha);
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|         }
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|     };
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| 
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|     //===================================================blender_rgb_gamma
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|     template<class ColorT, class Order, class Gamma> 
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|     class blender_rgb_gamma : public blender_base<ColorT, Order>
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|     {
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|     public:
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|         typedef ColorT color_type;
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|         typedef Order order_type;
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|         typedef Gamma gamma_type;
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|         typedef typename color_type::value_type value_type;
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|         typedef typename color_type::calc_type calc_type;
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|         typedef typename color_type::long_type long_type;
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| 
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|         //--------------------------------------------------------------------
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|         blender_rgb_gamma() : m_gamma(0) {}
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|         void gamma(const gamma_type& g) { m_gamma = &g; }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE void blend_pix(value_type* p, 
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|             value_type cr, value_type cg, value_type cb, value_type alpha, cover_type cover)
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|         {
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|             blend_pix(p, cr, cg, cb, color_type::mult_cover(alpha, cover));
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|         }
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|         
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|         //--------------------------------------------------------------------
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|         AGG_INLINE void blend_pix(value_type* p, 
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|             value_type cr, value_type cg, value_type cb, value_type alpha)
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|         {
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|             calc_type r = m_gamma->dir(p[Order::R]);
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|             calc_type g = m_gamma->dir(p[Order::G]);
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|             calc_type b = m_gamma->dir(p[Order::B]);
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|             p[Order::R] = m_gamma->inv(color_type::downscale((m_gamma->dir(cr) - r) * alpha) + r);
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|             p[Order::G] = m_gamma->inv(color_type::downscale((m_gamma->dir(cg) - g) * alpha) + g);
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|             p[Order::B] = m_gamma->inv(color_type::downscale((m_gamma->dir(cb) - b) * alpha) + b);
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|         }
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|         
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|     private:
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|         const gamma_type* m_gamma;
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|     };
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| 
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| 
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|     //==================================================pixfmt_alpha_blend_rgb
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|     template<class Blender, class RenBuf, unsigned Step, unsigned Offset = 0> 
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|     class pixfmt_alpha_blend_rgb
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|     {
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|     public:
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|         typedef pixfmt_rgb_tag pixfmt_category;
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|         typedef RenBuf   rbuf_type;
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|         typedef Blender  blender_type;
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|         typedef typename rbuf_type::row_data row_data;
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|         typedef typename blender_type::color_type color_type;
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|         typedef typename blender_type::order_type order_type;
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|         typedef typename color_type::value_type value_type;
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|         typedef typename color_type::calc_type calc_type;
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|         enum 
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|         {
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|             num_components = 3,
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|             pix_step = Step,
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|             pix_offset = Offset,
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|             pix_width = sizeof(value_type) * pix_step
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|         };
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|         struct pixel_type
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|         {
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|             value_type c[num_components];
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| 
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|             void set(value_type r, value_type g, value_type b)
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|             {
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|                 c[order_type::R] = r;
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|                 c[order_type::G] = g;
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|                 c[order_type::B] = b;
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|             }
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| 
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|             void set(const color_type& color)
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|             {
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|                 set(color.r, color.g, color.b);
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|             }
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| 
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|             void get(value_type& r, value_type& g, value_type& b) const
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|             {
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|                 r = c[order_type::R];
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|                 g = c[order_type::G];
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|                 b = c[order_type::B];
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|             }
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| 
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|             color_type get() const
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|             {
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|                 return color_type(
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|                     c[order_type::R], 
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|                     c[order_type::G], 
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|                     c[order_type::B]);
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|             }
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| 
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|             pixel_type* next()
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|             {
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|                 return (pixel_type*)(c + pix_step);
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|             }
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| 
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|             const pixel_type* next() const
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|             {
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|                 return (const pixel_type*)(c + pix_step);
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|             }
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| 
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|             pixel_type* advance(int n)
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|             {
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|                 return (pixel_type*)(c + n * pix_step);
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|             }
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| 
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|             const pixel_type* advance(int n) const
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|             {
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|                 return (const pixel_type*)(c + n * pix_step);
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|             }
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|         };
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| 
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|     private:
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|         //--------------------------------------------------------------------
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|         AGG_INLINE void blend_pix(pixel_type* p, 
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|             value_type r, value_type g, value_type b, value_type a, 
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|             unsigned cover)
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|         {
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|             m_blender.blend_pix(p->c, r, g, b, a, cover);
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE void blend_pix(pixel_type* p, 
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|             value_type r, value_type g, value_type b, value_type a)
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|         {
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|             m_blender.blend_pix(p->c, r, g, b, a);
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE void blend_pix(pixel_type* p, const color_type& c, unsigned cover)
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|         {
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|             m_blender.blend_pix(p->c, c.r, c.g, c.b, c.a, cover);
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE void blend_pix(pixel_type* p, const color_type& c)
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|         {
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|             m_blender.blend_pix(p->c, c.r, c.g, c.b, c.a);
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c, unsigned cover)
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|         {
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|             if (!c.is_transparent())
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|             {
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|                 if (c.is_opaque() && cover == cover_mask)
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|                 {
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|                     p->set(c);
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|                 }
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|                 else
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|                 {
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|                     blend_pix(p, c, cover);
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|                 }
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|             }
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c)
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|         {
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|             if (!c.is_transparent())
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|             {
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|                 if (c.is_opaque())
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|                 {
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|                     p->set(c);
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|                 }
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|                 else
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|                 {
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|                     blend_pix(p, c);
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|                 }
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|             }
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|         }
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| 
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|     public:
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|         //--------------------------------------------------------------------
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|         explicit pixfmt_alpha_blend_rgb(rbuf_type& rb) :
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|             m_rbuf(&rb)
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|         {}
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|         void attach(rbuf_type& rb) { m_rbuf = &rb; }
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| 
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|         //--------------------------------------------------------------------
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|         template<class PixFmt>
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|         bool attach(PixFmt& pixf, int x1, int y1, int x2, int y2)
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|         {
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|             rect_i r(x1, y1, x2, y2);
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|             if (r.clip(rect_i(0, 0, pixf.width()-1, pixf.height()-1)))
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|             {
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|                 int stride = pixf.stride();
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|                 m_rbuf->attach(pixf.pix_ptr(r.x1, stride < 0 ? r.y2 : r.y1), 
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|                                (r.x2 - r.x1) + 1,
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|                                (r.y2 - r.y1) + 1,
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|                                stride);
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|                 return true;
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|             }
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|             return false;
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         Blender& blender() { return m_blender; }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE unsigned width()  const { return m_rbuf->width();  }
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|         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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|         //--------------------------------------------------------------------
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|         AGG_INLINE       int8u* row_ptr(int y)       { return m_rbuf->row_ptr(y); }
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|         AGG_INLINE const int8u* row_ptr(int y) const { return m_rbuf->row_ptr(y); }
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|         AGG_INLINE row_data     row(int y)     const { return m_rbuf->row(y); }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE int8u* pix_ptr(int x, int y) 
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|         { 
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|             return m_rbuf->row_ptr(y) + sizeof(value_type) * (x * pix_step + pix_offset);
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|         }
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| 
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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) + sizeof(value_type) * (x * pix_step + pix_offset);
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|         }
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| 
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|         // Return pointer to pixel value, forcing row to be allocated.
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|         AGG_INLINE pixel_type* pix_value_ptr(int x, int y, unsigned len) 
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|         {
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|             return (pixel_type*)(m_rbuf->row_ptr(x, y, len) + sizeof(value_type) * (x * pix_step + pix_offset));
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|         }
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| 
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|         // Return pointer to pixel value, or null if row not allocated.
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|         AGG_INLINE const pixel_type* pix_value_ptr(int x, int y) const 
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|         {
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|             int8u* p = m_rbuf->row_ptr(y);
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|             return p ? (pixel_type*)(p + sizeof(value_type) * (x * pix_step + pix_offset)) : 0;
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|         }
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| 
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|         // Get pixel pointer from raw buffer pointer.
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|         AGG_INLINE static pixel_type* pix_value_ptr(void* p) 
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|         {
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|             return (pixel_type*)((value_type*)p + pix_offset);
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|         }
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| 
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|         // Get pixel pointer from raw buffer pointer.
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|         AGG_INLINE static const pixel_type* pix_value_ptr(const void* p) 
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|         {
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|             return (const pixel_type*)((const value_type*)p + pix_offset);
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE static void write_plain_color(void* p, color_type c)
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|         {
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|             // RGB formats are implicitly premultiplied.
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|             c.premultiply();
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|             pix_value_ptr(p)->set(c);
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE static color_type read_plain_color(const void* p)
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|         {
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|             return pix_value_ptr(p)->get();
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE static void make_pix(int8u* p, const color_type& c)
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|         {
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|             ((pixel_type*)p)->set(c);
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|         }
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| 
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|         //--------------------------------------------------------------------
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|         AGG_INLINE color_type pixel(int x, int y) const
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|         {
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|             if (const pixel_type* p = pix_value_ptr(x, y))
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|             {
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|                 return p->get();
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|             }
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|             return color_type::no_color();
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|         }
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| 
 | |
|         //--------------------------------------------------------------------
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|         AGG_INLINE void copy_pixel(int x, int y, const color_type& c)
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|         {
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|             pix_value_ptr(x, y, 1)->set(c);
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|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         AGG_INLINE void blend_pixel(int x, int y, const color_type& c, int8u cover)
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|         {
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|             copy_or_blend_pix(pix_value_ptr(x, y, 1), c, cover);
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|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         AGG_INLINE void copy_hline(int x, int y, 
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|                                    unsigned len, 
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|                                    const color_type& c)
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|         {
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|             pixel_type* p = pix_value_ptr(x, y, len);
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|             do
 | |
|             {
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|                 p->set(c);
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|                 p = p->next();
 | |
|             }
 | |
|             while(--len);
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|         }
 | |
| 
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         AGG_INLINE void copy_vline(int x, int y,
 | |
|                                    unsigned len, 
 | |
|                                    const color_type& c)
 | |
|         {
 | |
|             do
 | |
|             {
 | |
|                 pix_value_ptr(x, y++, 1)->set(c);
 | |
|             }
 | |
|             while (--len);
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         void blend_hline(int x, int y,
 | |
|                          unsigned len, 
 | |
|                          const color_type& c,
 | |
|                          int8u cover)
 | |
|         {
 | |
|             if (!c.is_transparent())
 | |
|             {
 | |
|                 pixel_type* p = pix_value_ptr(x, y, len);
 | |
| 
 | |
|                 if (c.is_opaque() && cover == cover_mask)
 | |
|                 {
 | |
|                     do
 | |
|                     {
 | |
|                         p->set(c);
 | |
|                         p = p->next();
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|                 else
 | |
|                 {
 | |
|                     do
 | |
|                     {
 | |
|                         blend_pix(p, c, cover);
 | |
|                         p = p->next();
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|             }
 | |
|         }
 | |
| 
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         void blend_vline(int x, int y,
 | |
|                          unsigned len, 
 | |
|                          const color_type& c,
 | |
|                          int8u cover)
 | |
|         {
 | |
|             if (!c.is_transparent())
 | |
|             {
 | |
|                 if (c.is_opaque() && cover == cover_mask)
 | |
|                 {
 | |
|                     do
 | |
|                     {
 | |
|                         pix_value_ptr(x, y++, 1)->set(c);
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|                 else
 | |
|                 {
 | |
|                     do
 | |
|                     {
 | |
|                         blend_pix(pix_value_ptr(x, y++, 1), c, cover);
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         void blend_solid_hspan(int x, int y,
 | |
|                                unsigned len, 
 | |
|                                const color_type& c,
 | |
|                                const int8u* covers)
 | |
|         {
 | |
|             if (!c.is_transparent())
 | |
|             {
 | |
|                 pixel_type* p = pix_value_ptr(x, y, len);
 | |
| 
 | |
|                 do 
 | |
|                 {
 | |
|                     if (c.is_opaque() && *covers == cover_mask)
 | |
|                     {
 | |
|                         p->set(c);
 | |
|                     }
 | |
|                     else
 | |
|                     {
 | |
|                         blend_pix(p, c, *covers);
 | |
|                     }
 | |
|                     p = p->next();
 | |
|                     ++covers;
 | |
|                 }
 | |
|                 while (--len);
 | |
|             }
 | |
|         }
 | |
| 
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         void blend_solid_vspan(int x, int y,
 | |
|                                unsigned len, 
 | |
|                                const color_type& c,
 | |
|                                const int8u* covers)
 | |
|         {
 | |
|             if (!c.is_transparent())
 | |
|             {
 | |
|                 do 
 | |
|                 {
 | |
|                     pixel_type* p = pix_value_ptr(x, y++, 1);
 | |
| 
 | |
|                     if (c.is_opaque() && *covers == cover_mask)
 | |
|                     {
 | |
|                         p->set(c);
 | |
|                     }
 | |
|                     else
 | |
|                     {
 | |
|                         blend_pix(p, c, *covers);
 | |
|                     }
 | |
|                     ++covers;
 | |
|                 }
 | |
|                 while (--len);
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         void copy_color_hspan(int x, int y,
 | |
|                               unsigned len, 
 | |
|                               const color_type* colors)
 | |
|         {
 | |
|             pixel_type* p = pix_value_ptr(x, y, len);
 | |
| 
 | |
|             do 
 | |
|             {
 | |
|                 p->set(*colors++);
 | |
|                 p = p->next();
 | |
|             }
 | |
|             while (--len);
 | |
|         }
 | |
| 
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         void copy_color_vspan(int x, int y,
 | |
|                               unsigned len, 
 | |
|                               const color_type* colors)
 | |
|         {
 | |
|             do 
 | |
|             {
 | |
|                 pix_value_ptr(x, y++, 1)->set(*colors++);
 | |
|             }
 | |
|             while (--len);
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         void blend_color_hspan(int x, int y,
 | |
|                                unsigned len, 
 | |
|                                const color_type* colors,
 | |
|                                const int8u* covers,
 | |
|                                int8u cover)
 | |
|         {
 | |
|             pixel_type* p = pix_value_ptr(x, y, len);
 | |
| 
 | |
|             if (covers)
 | |
|             {
 | |
|                 do 
 | |
|                 {
 | |
|                     copy_or_blend_pix(p, *colors++, *covers++);
 | |
|                     p = p->next();
 | |
|                 }
 | |
|                 while (--len);
 | |
|             }
 | |
|             else
 | |
|             {
 | |
|                 if (cover == cover_mask)
 | |
|                 {
 | |
|                     do 
 | |
|                     {
 | |
|                         copy_or_blend_pix(p, *colors++);
 | |
|                         p = p->next();
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|                 else
 | |
|                 {
 | |
|                     do 
 | |
|                     {
 | |
|                         copy_or_blend_pix(p, *colors++, cover);
 | |
|                         p = p->next();
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         void blend_color_vspan(int x, int y,
 | |
|                                unsigned len, 
 | |
|                                const color_type* colors,
 | |
|                                const int8u* covers,
 | |
|                                int8u cover)
 | |
|         {
 | |
|             if (covers)
 | |
|             {
 | |
|                 do 
 | |
|                 {
 | |
|                     copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++, *covers++);
 | |
|                 }
 | |
|                 while (--len);
 | |
|             }
 | |
|             else
 | |
|             {
 | |
|                 if (cover == cover_mask)
 | |
|                 {
 | |
|                     do 
 | |
|                     {
 | |
|                         copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++);
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|                 else
 | |
|                 {
 | |
|                     do 
 | |
|                     {
 | |
|                         copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++, cover);
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         template<class Function> void for_each_pixel(Function f)
 | |
|         {
 | |
|             for (unsigned y = 0; y < height(); ++y)
 | |
|             {
 | |
|                 row_data r = m_rbuf->row(y);
 | |
|                 if (r.ptr)
 | |
|                 {
 | |
|                     unsigned len = r.x2 - r.x1 + 1;
 | |
|                     pixel_type* p = pix_value_ptr(r.x1, y, len);
 | |
|                     do
 | |
|                     {
 | |
|                         f(p->c);
 | |
|                         p = p->next();
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         template<class GammaLut> void apply_gamma_dir(const GammaLut& g)
 | |
|         {
 | |
|             for_each_pixel(apply_gamma_dir_rgb<color_type, order_type, GammaLut>(g));
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         template<class GammaLut> void apply_gamma_inv(const GammaLut& g)
 | |
|         {
 | |
|             for_each_pixel(apply_gamma_inv_rgb<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)
 | |
|         {
 | |
|             if (const int8u* p = from.row_ptr(ysrc))
 | |
|             {
 | |
|                 memmove(m_rbuf->row_ptr(xdst, ydst, len) + xdst * pix_width, 
 | |
|                         p + xsrc * pix_width, 
 | |
|                         len * pix_width);
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         // Blend from an RGBA surface.
 | |
|         template<class SrcPixelFormatRenderer>
 | |
|         void blend_from(const SrcPixelFormatRenderer& from, 
 | |
|                         int xdst, int ydst,
 | |
|                         int xsrc, int ysrc,
 | |
|                         unsigned len,
 | |
|                         int8u cover)
 | |
|         {
 | |
|             typedef typename SrcPixelFormatRenderer::pixel_type src_pixel_type;
 | |
|             typedef typename SrcPixelFormatRenderer::order_type src_order;
 | |
| 
 | |
|             if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
 | |
|             {
 | |
|                 pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
 | |
| 
 | |
|                 if (cover == cover_mask)
 | |
|                 {
 | |
|                     do 
 | |
|                     {
 | |
|                         value_type alpha = psrc->c[src_order::A];
 | |
|                         if (alpha <= color_type::empty_value())
 | |
|                         {
 | |
|                             if (alpha >= color_type::full_value())
 | |
|                             {
 | |
|                                 pdst->c[order_type::R] = psrc->c[src_order::R];
 | |
|                                 pdst->c[order_type::G] = psrc->c[src_order::G];
 | |
|                                 pdst->c[order_type::B] = psrc->c[src_order::B];
 | |
|                             }
 | |
|                             else
 | |
|                             {
 | |
|                                 blend_pix(pdst, 
 | |
|                                     psrc->c[src_order::R],
 | |
|                                     psrc->c[src_order::G],
 | |
|                                     psrc->c[src_order::B],
 | |
|                                     alpha);
 | |
|                             }
 | |
|                         }
 | |
|                         psrc = psrc->next();
 | |
|                         pdst = pdst->next();
 | |
|                     }
 | |
|                     while(--len);
 | |
|                 }
 | |
|                 else
 | |
|                 {
 | |
|                     do 
 | |
|                     {
 | |
|                         copy_or_blend_pix(pdst, psrc->get(), cover);
 | |
|                         psrc = psrc->next();
 | |
|                         pdst = pdst->next();
 | |
|                     }
 | |
|                     while (--len);
 | |
|                 }
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         // Blend from single color, using grayscale surface as alpha channel.
 | |
|         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::pixel_type src_pixel_type;
 | |
|             typedef typename SrcPixelFormatRenderer::color_type src_color_type;
 | |
| 
 | |
|             if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
 | |
|             {
 | |
|                 pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
 | |
| 
 | |
|                 do 
 | |
|                 {
 | |
|                     copy_or_blend_pix(pdst, color, src_color_type::scale_cover(cover, psrc->c[0]));
 | |
|                     psrc = psrc->next();
 | |
|                     pdst = pdst->next();
 | |
|                 }
 | |
|                 while (--len);
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         //--------------------------------------------------------------------
 | |
|         // Blend from color table, using grayscale surface as indexes into table. 
 | |
|         // Obviously, this only works for integer value types.
 | |
|         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::pixel_type src_pixel_type;
 | |
| 
 | |
|             if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
 | |
|             {
 | |
|                 pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
 | |
| 
 | |
|                 if (cover == cover_mask)
 | |
|                 {
 | |
|                     do 
 | |
|                     {
 | |
|                         const color_type& color = color_lut[psrc->c[0]];
 | |
|                         blend_pix(pdst, color);
 | |
|                         psrc = psrc->next();
 | |
|                         pdst = pdst->next();
 | |
|                     }
 | |
|                     while(--len);
 | |
|                 }
 | |
|                 else
 | |
|                 {
 | |
|                     do 
 | |
|                     {
 | |
|                         copy_or_blend_pix(pdst, color_lut[psrc->c[0]], cover);
 | |
|                         psrc = psrc->next();
 | |
|                         pdst = pdst->next();
 | |
|                     }
 | |
|                     while(--len);
 | |
|                 }
 | |
|             }
 | |
|         }
 | |
| 
 | |
|     private:
 | |
|         rbuf_type* m_rbuf;
 | |
|         Blender    m_blender;
 | |
|     };
 | |
|     
 | |
|     //-----------------------------------------------------------------------
 | |
|     typedef blender_rgb<rgba8, order_rgb> blender_rgb24;
 | |
|     typedef blender_rgb<rgba8, order_bgr> blender_bgr24;
 | |
|     typedef blender_rgb<srgba8, order_rgb> blender_srgb24;
 | |
|     typedef blender_rgb<srgba8, order_bgr> blender_sbgr24;
 | |
|     typedef blender_rgb<rgba16, order_rgb> blender_rgb48;
 | |
|     typedef blender_rgb<rgba16, order_bgr> blender_bgr48;
 | |
|     typedef blender_rgb<rgba32, order_rgb> blender_rgb96;
 | |
|     typedef blender_rgb<rgba32, order_bgr> blender_bgr96;
 | |
| 
 | |
|     typedef blender_rgb_pre<rgba8, order_rgb> blender_rgb24_pre;
 | |
|     typedef blender_rgb_pre<rgba8, order_bgr> blender_bgr24_pre;
 | |
|     typedef blender_rgb_pre<srgba8, order_rgb> blender_srgb24_pre;
 | |
|     typedef blender_rgb_pre<srgba8, order_bgr> blender_sbgr24_pre;
 | |
|     typedef blender_rgb_pre<rgba16, order_rgb> blender_rgb48_pre;
 | |
|     typedef blender_rgb_pre<rgba16, order_bgr> blender_bgr48_pre;
 | |
|     typedef blender_rgb_pre<rgba32, order_rgb> blender_rgb96_pre;
 | |
|     typedef blender_rgb_pre<rgba32, order_bgr> blender_bgr96_pre;
 | |
| 
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb24, rendering_buffer, 3> pixfmt_rgb24;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr24, rendering_buffer, 3> pixfmt_bgr24;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_srgb24, rendering_buffer, 3> pixfmt_srgb24;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_sbgr24, rendering_buffer, 3> pixfmt_sbgr24;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb48, rendering_buffer, 3> pixfmt_rgb48;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr48, rendering_buffer, 3> pixfmt_bgr48;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb96, rendering_buffer, 3> pixfmt_rgb96;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr96, rendering_buffer, 3> pixfmt_bgr96;
 | |
| 
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb24_pre, rendering_buffer, 3> pixfmt_rgb24_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr24_pre, rendering_buffer, 3> pixfmt_bgr24_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_srgb24_pre, rendering_buffer, 3> pixfmt_srgb24_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_sbgr24_pre, rendering_buffer, 3> pixfmt_sbgr24_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb48_pre, rendering_buffer, 3> pixfmt_rgb48_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr48_pre, rendering_buffer, 3> pixfmt_bgr48_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb96_pre, rendering_buffer, 3> pixfmt_rgb96_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr96_pre, rendering_buffer, 3> pixfmt_bgr96_pre;
 | |
| 
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb24, rendering_buffer, 4, 0> pixfmt_rgbx32;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb24, rendering_buffer, 4, 1> pixfmt_xrgb32;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr24, rendering_buffer, 4, 1> pixfmt_xbgr32;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr24, rendering_buffer, 4, 0> pixfmt_bgrx32;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_srgb24, rendering_buffer, 4, 0> pixfmt_srgbx32;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_srgb24, rendering_buffer, 4, 1> pixfmt_sxrgb32;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_sbgr24, rendering_buffer, 4, 1> pixfmt_sxbgr32;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_sbgr24, rendering_buffer, 4, 0> pixfmt_sbgrx32;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb48, rendering_buffer, 4, 0> pixfmt_rgbx64;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb48, rendering_buffer, 4, 1> pixfmt_xrgb64;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr48, rendering_buffer, 4, 1> pixfmt_xbgr64;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr48, rendering_buffer, 4, 0> pixfmt_bgrx64;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb96, rendering_buffer, 4, 0> pixfmt_rgbx128;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb96, rendering_buffer, 4, 1> pixfmt_xrgb128;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr96, rendering_buffer, 4, 1> pixfmt_xbgr128;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr96, rendering_buffer, 4, 0> pixfmt_bgrx128;
 | |
| 
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb24_pre, rendering_buffer, 4, 0> pixfmt_rgbx32_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb24_pre, rendering_buffer, 4, 1> pixfmt_xrgb32_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr24_pre, rendering_buffer, 4, 1> pixfmt_xbgr32_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr24_pre, rendering_buffer, 4, 0> pixfmt_bgrx32_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_srgb24_pre, rendering_buffer, 4, 0> pixfmt_srgbx32_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_srgb24_pre, rendering_buffer, 4, 1> pixfmt_sxrgb32_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_sbgr24_pre, rendering_buffer, 4, 1> pixfmt_sxbgr32_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_sbgr24_pre, rendering_buffer, 4, 0> pixfmt_sbgrx32_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb48_pre, rendering_buffer, 4, 0> pixfmt_rgbx64_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb48_pre, rendering_buffer, 4, 1> pixfmt_xrgb64_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr48_pre, rendering_buffer, 4, 1> pixfmt_xbgr64_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr48_pre, rendering_buffer, 4, 0> pixfmt_bgrx64_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb96_pre, rendering_buffer, 4, 0> pixfmt_rgbx128_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_rgb96_pre, rendering_buffer, 4, 1> pixfmt_xrgb128_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr96_pre, rendering_buffer, 4, 1> pixfmt_xbgr128_pre;
 | |
|     typedef pixfmt_alpha_blend_rgb<blender_bgr96_pre, rendering_buffer, 4, 0> pixfmt_bgrx128_pre;
 | |
|     
 | |
| 
 | |
|     //-----------------------------------------------------pixfmt_rgb24_gamma
 | |
|     template<class Gamma> class pixfmt_rgb24_gamma : 
 | |
|     public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_rgb, Gamma>, rendering_buffer, 3>
 | |
|     {
 | |
|     public:
 | |
|         pixfmt_rgb24_gamma(rendering_buffer& rb, const Gamma& g) :
 | |
|             pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_rgb, Gamma>, rendering_buffer, 3>(rb) 
 | |
|         {
 | |
|             this->blender().gamma(g);
 | |
|         }
 | |
|     };
 | |
|         
 | |
|     //-----------------------------------------------------pixfmt_srgb24_gamma
 | |
|     template<class Gamma> class pixfmt_srgb24_gamma : 
 | |
|     public pixfmt_alpha_blend_rgb<blender_rgb_gamma<srgba8, order_rgb, Gamma>, rendering_buffer, 3>
 | |
|     {
 | |
|     public:
 | |
|         pixfmt_srgb24_gamma(rendering_buffer& rb, const Gamma& g) :
 | |
|             pixfmt_alpha_blend_rgb<blender_rgb_gamma<srgba8, order_rgb, Gamma>, rendering_buffer, 3>(rb) 
 | |
|         {
 | |
|             this->blender().gamma(g);
 | |
|         }
 | |
|     };
 | |
|         
 | |
|     //-----------------------------------------------------pixfmt_bgr24_gamma
 | |
|     template<class Gamma> class pixfmt_bgr24_gamma : 
 | |
|     public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_bgr, Gamma>, rendering_buffer, 3>
 | |
|     {
 | |
|     public:
 | |
|         pixfmt_bgr24_gamma(rendering_buffer& rb, const Gamma& g) :
 | |
|             pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_bgr, Gamma>, rendering_buffer, 3>(rb) 
 | |
|         {
 | |
|             this->blender().gamma(g);
 | |
|         }
 | |
|     };
 | |
| 
 | |
|     //-----------------------------------------------------pixfmt_sbgr24_gamma
 | |
|     template<class Gamma> class pixfmt_sbgr24_gamma : 
 | |
|     public pixfmt_alpha_blend_rgb<blender_rgb_gamma<srgba8, order_bgr, Gamma>, rendering_buffer, 3>
 | |
|     {
 | |
|     public:
 | |
|         pixfmt_sbgr24_gamma(rendering_buffer& rb, const Gamma& g) :
 | |
|             pixfmt_alpha_blend_rgb<blender_rgb_gamma<srgba8, order_bgr, Gamma>, rendering_buffer, 3>(rb) 
 | |
|         {
 | |
|             this->blender().gamma(g);
 | |
|         }
 | |
|     };
 | |
| 
 | |
|     //-----------------------------------------------------pixfmt_rgb48_gamma
 | |
|     template<class Gamma> class pixfmt_rgb48_gamma : 
 | |
|     public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_rgb, Gamma>, rendering_buffer, 3>
 | |
|     {
 | |
|     public:
 | |
|         pixfmt_rgb48_gamma(rendering_buffer& rb, const Gamma& g) :
 | |
|             pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_rgb, Gamma>, rendering_buffer, 3>(rb) 
 | |
|         {
 | |
|             this->blender().gamma(g);
 | |
|         }
 | |
|     };
 | |
|         
 | |
|     //-----------------------------------------------------pixfmt_bgr48_gamma
 | |
|     template<class Gamma> class pixfmt_bgr48_gamma : 
 | |
|     public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_bgr, Gamma>, rendering_buffer, 3>
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|     {
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|     public:
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|         pixfmt_bgr48_gamma(rendering_buffer& rb, const Gamma& g) :
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|             pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_bgr, Gamma>, rendering_buffer, 3>(rb) 
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|         {
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|             this->blender().gamma(g);
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|         }
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|     };
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|     
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| }
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| 
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| #endif
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| 
 | 
