1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
4 # include "../config.h"
5 #endif // HAVE_CONFIG_H
7 #include "truerendercontrol.hh"
9 #include "screeninfo.hh"
15 #endif // HAVE_STDLIB_H
18 #define _(str) gettext(str)
23 TrueRenderControl::TrueRenderControl(const ScreenInfo *screen)
24 : RenderControl(screen),
29 printf("Initializing TrueColor RenderControl\n");
31 unsigned long red_mask, green_mask, blue_mask;
33 // find the offsets for each color in the visual's masks
34 red_mask = screen->visual()->red_mask;
35 green_mask = screen->visual()->green_mask;
36 blue_mask = screen->visual()->blue_mask;
38 while (! (red_mask & 1)) { _red_offset++; red_mask >>= 1; }
39 while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
40 while (! (blue_mask & 1)) { _blue_offset++; blue_mask >>= 1; }
42 _red_shift = _green_shift = _blue_shift = 8;
43 while (red_mask) { red_mask >>= 1; _red_shift--; }
44 while (green_mask) { green_mask >>= 1; _green_shift--; }
45 while (blue_mask) { blue_mask >>= 1; _blue_shift--; }
48 TrueRenderControl::~TrueRenderControl()
50 printf("Destroying TrueColor RenderControl\n");
55 static inline void renderPixel(XImage *im, unsigned char *dp,
58 unsigned int bpp = im->bits_per_pixel + (im->byte_order == MSBFirst ? 1 : 0);
95 assert(false); // wtf?
99 void TrueRenderControl::drawBackground(Surface *sf,
100 const RenderTexture &texture) const
104 int w = sf->width(), h = sf->height();
106 XImage *im = XCreateImage(**display, _screen->visual(), _screen->depth(),
107 ZPixmap, 0, NULL, w, h, 32, 0);
109 unsigned char *data = new unsigned char[im->bytes_per_line * h];
110 unsigned char *dp = data;
112 for (int y = 0; y < h/3; ++y)
113 for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
114 renderPixel(im, dp, (255*x/w) << _red_offset << _red_shift);
115 for (int y = 0; y < h/3; ++y)
116 for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
117 renderPixel(im, dp, (255*x/w) << _green_offset << _green_shift);
118 for (int y = 0; y < h/3; ++y)
119 for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
120 renderPixel(im, dp, (255*x/w) << _blue_offset << _blue_shift);
122 im->data = (char*) data;
125 sf->_pm = XCreatePixmap(**display, _screen->rootWindow(), w, h,
127 XPutImage(**display, sf->_pm, DefaultGC(**display, _screen->screen()),
128 im, 0, 0, 0, 0, w, h);
130 //delete [] image->data;
131 //image->data = NULL;