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Dogcows Code - chaz/openbox/blob - truerendercontrol.cc
1d5b8dc44bc37b3e327a699e3fda5a89c54aebaa
1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
5 #include "truerendercontrol.hh"
7 #include "screeninfo.hh"
9 #include "rendertexture.hh"
14 #endif // HAVE_STDLIB_H
16 #include "../src/gettext.h"
17 #define _(str) gettext(str)
22 TrueRenderControl::TrueRenderControl(int screen
)
23 : RenderControl(screen
),
28 printf("Initializing TrueColor RenderControl\n");
30 const ScreenInfo
*info
= display
->screenInfo(_screen
);
31 XImage
*timage
= XCreateImage(**display
, info
->visual(), info
->depth(),
32 ZPixmap
, 0, NULL
, 1, 1, 32, 0);
34 unsigned long red_mask
, green_mask
, blue_mask
;
36 // find the offsets for each color in the visual's masks
37 red_mask
= timage
->red_mask
;
38 green_mask
= timage
->green_mask
;
39 blue_mask
= timage
->blue_mask
;
41 while (! (red_mask
& 1)) { _red_offset
++; red_mask
>>= 1; }
42 while (! (green_mask
& 1)) { _green_offset
++; green_mask
>>= 1; }
43 while (! (blue_mask
& 1)) { _blue_offset
++; blue_mask
>>= 1; }
45 _red_shift
= _green_shift
= _blue_shift
= 8;
46 while (red_mask
) { red_mask
>>= 1; _red_shift
--; }
47 while (green_mask
) { green_mask
>>= 1; _green_shift
--; }
48 while (blue_mask
) { blue_mask
>>= 1; _blue_shift
--; }
52 TrueRenderControl::~TrueRenderControl()
54 printf("Destroying TrueColor RenderControl\n");
57 void TrueRenderControl::reduceDepth(Surface
&sf
, XImage
*im
) const
59 // since pixel32 is the largest possible pixel size, we can share the array
62 pixel32
*data
= sf
.pixelData();
63 pixel16
*p
= (pixel16
*) data
;
64 switch (im
->bits_per_pixel
) {
66 if ((_red_offset
!= default_red_shift
) ||
67 (_blue_offset
!= default_blue_shift
) ||
68 (_green_offset
!= default_green_shift
)) {
69 printf("cross endian conversion\n");
70 for (y
= 0; y
< im
->height
; y
++) {
71 for (x
= 0; x
< im
->width
; x
++) {
72 r
= (data
[x
] >> default_red_shift
) & 0xFF;
73 g
= (data
[x
] >> default_green_shift
) & 0xFF;
74 b
= (data
[x
] >> default_blue_shift
) & 0xFF;
75 data
[x
] = (r
<< _red_offset
) + (g
<< _green_offset
) +
83 for (y
= 0; y
< im
->height
; y
++) {
84 for (x
= 0; x
< im
->width
; x
++) {
85 r
= (data
[x
] >> default_red_shift
) & 0xFF;
87 g
= (data
[x
] >> default_green_shift
) & 0xFF;
88 g
= g
>> _green_shift
;
89 b
= (data
[x
] >> default_blue_shift
) & 0xFF;
91 p
[x
] = (r
<< _red_offset
) + (g
<< _green_offset
) + (b
<< _blue_offset
);
94 p
+= im
->bytes_per_line
/2;
98 printf("your bit depth is currently unhandled\n");
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