1 /* 2 * Copyright 2005, Stephan Aßmus <superstippi@gmx.de>. 3 * Copyright 2008, Andrej Spielmann <andrej.spielmann@seh.ox.ac.uk>. 4 * All rights reserved. Distributed under the terms of the MIT License. 5 * 6 * DrawingMode implementing B_OP_MAX on B_RGBA32. 7 * 8 */ 9 10 #ifndef DRAWING_MODE_MAX_SUBPIX_H 11 #define DRAWING_MODE_MAX_SUBPIX_H 12 13 #include "DrawingMode.h" 14 #include "GlobalSubpixelSettings.h" 15 16 // BLEND_MAX_SUBPIX 17 #define BLEND_MAX_SUBPIX(d, r, g, b, a1, a2, a3) \ 18 { \ 19 pixel32 _p; \ 20 _p.data32 = *(uint32*)d; \ 21 if (brightness_for((r), (g), (b)) \ 22 > brightness_for(_p.data8[2], _p.data8[1], _p.data8[0])) { \ 23 BLEND_SUBPIX(d, (r), (g), (b), a1, a2, a3); \ 24 } \ 25 } 26 27 28 // blend_solid_hspan_max_subpix 29 void 30 blend_solid_hspan_max_subpix(int x, int y, unsigned len, const color_type& c, 31 const uint8* covers, agg_buffer* buffer, const PatternHandler* pattern) 32 { 33 uint8* p = buffer->row_ptr(y) + (x << 2); 34 const int subpixelL = gSubpixelOrderingRGB ? 2 : 0; 35 const int subpixelM = 1; 36 const int subpixelR = gSubpixelOrderingRGB ? 0 : 2; 37 do { 38 rgb_color color = pattern->ColorAt(x, y); 39 BLEND_MAX_SUBPIX(p, color.red, color.green, color.blue, 40 covers[subpixelL], covers[subpixelM], covers[subpixelR]); 41 covers += 3; 42 p += 4; 43 x++; 44 len -= 3; 45 } while (len); 46 } 47 48 #endif // DRAWING_MODE_MAX_SUBPIX_H 49 50