xref: /haiku/src/servers/app/drawing/Painter/drawing_modes/DrawingModeCopySUBPIX.h (revision 21258e2674226d6aa732321b6f8494841895af5f)
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_COPY on B_RGBA32.
7  *
8  */
9 
10 #ifndef DRAWING_MODE_COPY_SUBPIX_H
11 #define DRAWING_MODE_COPY_SUBPIX_H
12 
13 #include "DrawingMode.h"
14 #include "GlobalSubpixelSettings.h"
15 
16 // BLEND_COPY_SUBPIX
17 #define BLEND_COPY_SUBPIX(d, r2, g2, b2, a1, a2, a3, r1, g1, b1) \
18 { \
19 	BLEND_FROM_SUBPIX(d, r1, g1, b1, r2, g2, b2, a1, a2, a3); \
20 }
21 
22 
23 // blend_solid_hspan_copy_subpix
24 void
25 blend_solid_hspan_copy_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 l = pattern->LowColor();
30 	const int subpixelL = gSubpixelOrderingRGB ? 2 : 0;
31 	const int subpixelM = 1;
32 	const int subpixelR = gSubpixelOrderingRGB ? 0 : 2;
33 	do {
34 		rgb_color color = pattern->ColorAt(x, y);
35 		BLEND_COPY_SUBPIX(p, color.red, color.green, color.blue,
36 			covers[subpixelL], covers[subpixelM], covers[subpixelR], l.red,
37 			l.green, l.blue);
38 		covers += 3;
39 		p += 4;
40 		x++;
41 		len -= 3;
42 	} while (len);
43 }
44 
45 #endif // DRAWING_MODE_COPY_SUBPIX_H
46 
47