1/*
2 * Copyright 2005, Stephan A��mus <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
24void
25blend_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