libs/agg/agg_pixfmt_rgb_packed.h

84                                          unsigned cover)
92                ((((r * alpha + cr * cover) >> 1)  & 0x7C00) |
93                 (((g * alpha + cg * cover) >> 6)  & 0x03E0) |
94                  ((b * alpha + cb * cover) >> 11) | 0x8000);
214                                          unsigned cover)
222                ((((r * alpha + cr * cover)      ) & 0xF800) |
223                 (((g * alpha + cg * cover) >> 5 ) & 0x07E0) |
224                  ((b * alpha + cb * cover) >> 11));
339                                          unsigned cover)
342             cover = (cover + 1) << (color_type::base_shift - 8);
348                ((((r * alpha + cr * cover) >> 2)  & 0x3FF00000) |
349                 (((g * alpha + cg * cover) >> 12) & 0x000FFC00) |
350                  ((b * alpha + cb * cover) >> 22) | 0xC0000000);
467                                          unsigned cover)
470             cover = (cover + 1) << (color_type::base_shift - 8);
476                ((((b * alpha + cb * cover) >> 2)  & 0x3FF00000) |
477                 (((g * alpha + cg * cover) >> 12) & 0x000FFC00) |
478                  ((r * alpha + cr * cover) >> 22) | 0xC0000000);
594                                          unsigned cover)
597             cover = (cover + 1) << (color_type::base_shift - 8);
603                ((((r * alpha + cr * cover)      ) & 0xFFE00000) |
604                 (((g * alpha + cg * cover) >> 11) & 0x001FFC00) |
605                  ((b * alpha + cb * cover) >> 22));
716                                          unsigned cover)
719             cover = (cover + 1) << (color_type::base_shift - 8);
725                ((((b * alpha + cb * cover)      ) & 0xFFC00000) |
726                 (((g * alpha + cg * cover) >> 10) & 0x003FF800) |
727                  ((r * alpha + cr * cover) >> 21));
813         AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c, unsigned cover)
817                 calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
824                     m_blender.blend_pix(p, c.r, c.g, c.b, alpha, cover);
895         AGG_INLINE void blend_pixel(int x, int y, const color_type& c, int8u cover)
897             copy_or_blend_pix((pixel_type*)m_rbuf->row_ptr(x, y, 1) + x, c, cover);
932                          int8u cover)
937                 calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
951                         m_blender.blend_pix(p, c.r, c.g, c.b, alpha, cover);
963                          int8u cover)
967                 calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
983                             c.r, c.g, c.b, alpha, cover);
1052                                int8u cover)
1057                 copy_or_blend_pix(p++, *colors++, covers ? *covers++ : cover);
1067                                int8u cover)
1072                                   *colors++, covers ? *covers++ : cover);
1099                         int8u cover)
1114                         if(alpha == base_mask && cover == 255)
1127                                                 cover);