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996 lines
37 KiB
996 lines
37 KiB
2 years ago
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//----------------------------------------------------------------------------
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// 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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#include <cstring>
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#include "agg_pixfmt_base.h"
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#include "agg_rendering_buffer.h"
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namespace agg
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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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apply_gamma_dir_rgb(const GammaLut& gamma) : m_gamma(gamma) {}
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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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private:
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const GammaLut& m_gamma;
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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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apply_gamma_inv_rgb(const GammaLut& gamma) : m_gamma(gamma) {}
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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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private:
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const GammaLut& m_gamma;
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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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// 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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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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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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//======================================================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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// 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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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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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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//===================================================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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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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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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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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private:
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const gamma_type* m_gamma;
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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Blender& blender() { return m_blender; }
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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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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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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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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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// 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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// 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;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get pixel pointer from raw buffer pointer.
|
||
|
|
AGG_INLINE static pixel_type* pix_value_ptr(void* p)
|
||
|
|
{
|
||
|
|
return (pixel_type*)((value_type*)p + pix_offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get pixel pointer from raw buffer pointer.
|
||
|
|
AGG_INLINE static const pixel_type* pix_value_ptr(const void* p)
|
||
|
|
{
|
||
|
|
return (const pixel_type*)((const value_type*)p + pix_offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
AGG_INLINE static void write_plain_color(void* p, color_type c)
|
||
|
|
{
|
||
|
|
// RGB formats are implicitly premultiplied.
|
||
|
|
c.premultiply();
|
||
|
|
pix_value_ptr(p)->set(c);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
AGG_INLINE static color_type read_plain_color(const void* p)
|
||
|
|
{
|
||
|
|
return pix_value_ptr(p)->get();
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
AGG_INLINE static void make_pix(int8u* p, const color_type& c)
|
||
|
|
{
|
||
|
|
((pixel_type*)p)->set(c);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
AGG_INLINE color_type pixel(int x, int y) const
|
||
|
|
{
|
||
|
|
if (const pixel_type* p = pix_value_ptr(x, y))
|
||
|
|
{
|
||
|
|
return p->get();
|
||
|
|
}
|
||
|
|
return color_type::no_color();
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
AGG_INLINE void copy_pixel(int x, int y, const color_type& c)
|
||
|
|
{
|
||
|
|
pix_value_ptr(x, y, 1)->set(c);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
AGG_INLINE void blend_pixel(int x, int y, const color_type& c, int8u cover)
|
||
|
|
{
|
||
|
|
copy_or_blend_pix(pix_value_ptr(x, y, 1), c, cover);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
AGG_INLINE void copy_hline(int x, int y,
|
||
|
|
unsigned len,
|
||
|
|
const color_type& c)
|
||
|
|
{
|
||
|
|
pixel_type* p = pix_value_ptr(x, y, len);
|
||
|
|
do
|
||
|
|
{
|
||
|
|
p->set(c);
|
||
|
|
p = p->next();
|
||
|
|
}
|
||
|
|
while(--len);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
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))
|
||
|
|
{
|
||
|
|
std::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>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
pixfmt_bgr48_gamma(rendering_buffer& rb, const Gamma& g) :
|
||
|
|
pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_bgr, Gamma>, rendering_buffer, 3>(rb)
|
||
|
|
{
|
||
|
|
this->blender().gamma(g);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|