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"
11 #include "rendertexture.hh"
16 #endif // HAVE_STDLIB_H
19 #define _(str) gettext(str)
24 TrueRenderControl::TrueRenderControl(int screen)
25 : RenderControl(screen),
30 printf("Initializing TrueColor RenderControl\n");
32 Visual *visual = display->screenInfo(_screen)->visual();
33 unsigned long red_mask, green_mask, blue_mask;
35 // find the offsets for each color in the visual's masks
36 red_mask = visual->red_mask;
37 green_mask = visual->green_mask;
38 blue_mask = visual->blue_mask;
40 while (! (red_mask & 1)) { _red_offset++; red_mask >>= 1; }
41 while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
42 while (! (blue_mask & 1)) { _blue_offset++; blue_mask >>= 1; }
44 _red_shift = _green_shift = _blue_shift = 8;
45 while (red_mask) { red_mask >>= 1; _red_shift--; }
46 while (green_mask) { green_mask >>= 1; _green_shift--; }
47 while (blue_mask) { blue_mask >>= 1; _blue_shift--; }
50 TrueRenderControl::~TrueRenderControl()
52 printf("Destroying TrueColor RenderControl\n");
58 static inline void renderPixel(XImage *im, unsigned char *dp,
61 unsigned int bpp = im->bits_per_pixel + (im->byte_order == MSBFirst ? 1 : 0);
98 assert(false); // wtf?
102 void TrueRenderControl::drawBackground(Surface& sf,
103 const RenderTexture &texture) const
105 assert(sf._screen == _screen);
107 int w = sf.width(), h = sf.height();
109 const ScreenInfo *info = display->screenInfo(_screen);
110 XImage *im = XCreateImage(**display, info->visual(), info->depth(),
111 ZPixmap, 0, NULL, w, h, 32, 0);
113 unsigned char *data = new unsigned char[im->bytes_per_line * h];
114 unsigned char *dp = data;
115 unsigned int bytes_per_pixel = im->bits_per_pixel/8;
117 for (int y = 0; y < h/3; ++y)
118 for (int x = 0; x < w; ++x, dp += bytes_per_pixel)
119 renderPixel(im, dp, (255*x/w) >> _red_shift << _red_offset);
120 for (int y = 0; y < h/3; ++y)
121 for (int x = 0; x < w; ++x, dp += bytes_per_pixel)
122 renderPixel(im, dp, (255*x/w) >> _green_shift << _green_offset);
123 for (int y = 0; y < h/3; ++y)
124 for (int x = 0; x < w; ++x, dp += bytes_per_pixel)
125 renderPixel(im, dp, (255*x/w) >> _blue_shift << _blue_offset);
127 im->data = (char*) data;
130 sf.setPixmap(texture.color());
131 // sf.setPixmap(RenderColor(_screen, 0xff, 0xff, 0));