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