| 90 | //-------------------------------------------------------------------- |
| 91 | void prepare() {} |
| 92 | void generate(color_type* span, int x, int y, unsigned len) |
| 93 | { |
| 94 | x += m_offset_x; |
| 95 | y += m_offset_y; |
| 96 | const value_type* p = (const value_type*)m_src->span(x, y, len); |
| 97 | do |
| 98 | { |
| 99 | span->r = p[order_type::R]; |
| 100 | span->g = p[order_type::G]; |
| 101 | span->b = p[order_type::B]; |
| 102 | span->a = p[order_type::A]; |
| 103 | p = (const value_type*)m_src->next_x(); |
| 104 | ++span; |
| 105 | } while (--len); |
| 106 | } |
| 107 | |
| 108 | private: |
| 109 | source_type* m_src; |