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_INVERT on B_RGBA32. 7 * 8 */ 9 10 #ifndef DRAWING_MODE_INVERT_SUBPIX_H 11 #define DRAWING_MODE_INVERT_SUBPIX_H 12 13 #include "DrawingMode.h" 14 #include "GlobalSubpixelSettings.h" 15 16 // BLEND_INVERT_SUBPIX 17 #define BLEND_INVERT_SUBPIX(d, a1, a2, a3) \ 18 { \ 19 pixel32 _p; \ 20 _p.data32 = *(uint32*)d; \ 21 BLEND_SUBPIX(d, 255 - _p.data8[2], 255 - _p.data8[1], 255 - _p.data8[0], \ 22 a1, a2, a3); \ 23 (void)_p; \ 24 } 25 26 27 // blend_solid_hspan_invert_subpix 28 void 29 blend_solid_hspan_invert_subpix(int x, int y, unsigned len, const color_type& c, 30 const uint8* covers, agg_buffer* buffer, const PatternHandler* pattern) 31 { 32 uint8* p = buffer->row_ptr(y) + (x << 2); 33 const int subpixelL = gSubpixelOrderingRGB ? 2 : 0; 34 const int subpixelM = 1; 35 const int subpixelR = gSubpixelOrderingRGB ? 0 : 2; 36 do { 37 if (pattern->IsHighColor(x, y)) { 38 BLEND_INVERT_SUBPIX(p, covers[subpixelL], covers[subpixelM], 39 covers[subpixelR]); 40 } 41 covers += 3; 42 p += 4; 43 x++; 44 len -= 3; 45 } while (len); 46 } 47 48 49 #endif // DRAWING_MODE_INVERT_SUBPIX_H 50 51