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 // scale available colorspace to match our 256x256x256 cube
43 _red_bits = 255 / red_mask;
44 _green_bits = 255 / green_mask;
45 _blue_bits = 255 / blue_mask;
47 for (int i = 0; i < 256; i++) {
48 _red_color_table[i] = i / _red_bits;
49 _green_color_table[i] = i / _green_bits;
50 _blue_color_table[i] = i / _blue_bits;
54 TrueRenderControl::~TrueRenderControl()
56 printf("Destroying TrueColor RenderControl\n");
61 static inline void renderPixel(XImage *im, unsigned char *dp,
64 unsigned int bpp = im->bits_per_pixel + (im->byte_order == MSBFirst ? 1 : 0);
101 assert(false); // wtf?
105 void TrueRenderControl::drawBackground(Surface *sf,
106 const RenderTexture &texture) const
110 int w = sf->width(), h = sf->height();
112 XImage *im = XCreateImage(**display, _screen->visual(), _screen->depth(),
113 ZPixmap, 0, NULL, w, h, 32, 0);
115 unsigned char *data = new unsigned char[im->bytes_per_line * h];
116 unsigned char *dp = data;
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, _red_color_table[255*x/w] << _red_offset);
121 for (int y = 0; y < h/3; ++y)
122 for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
123 renderPixel(im, dp, _green_color_table[255*x/w] << _green_offset);
124 for (int y = 0; y < h/3; ++y)
125 for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
126 renderPixel(im, dp, _blue_color_table[255*x/w] << _blue_offset);
128 printf("\nDone %d %d\n", im->bytes_per_line * h, dp - data);
130 im->data = (char*) data;
133 sf->_pm = XCreatePixmap(**display, _screen->rootWindow(), w, h,
135 XPutImage(**display, sf->_pm, DefaultGC(**display, _screen->screen()),
136 im, 0, 0, 0, 0, w, h);
138 //delete [] image->data;
139 //image->data = NULL;