138 lines
3.4 KiB
C++
138 lines
3.4 KiB
C++
// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
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#ifdef HAVE_CONFIG_H
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# include "../config.h"
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#endif // HAVE_CONFIG_H
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#include "truerendercontrol.hh"
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#include "display.hh"
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#include "screeninfo.hh"
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#include "surface.hh"
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#include "rendertexture.hh"
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extern "C" {
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#ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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#endif // HAVE_STDLIB_H
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#include "gettext.h"
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#define _(str) gettext(str)
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}
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namespace otk {
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TrueRenderControl::TrueRenderControl(int screen)
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: RenderControl(screen),
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_red_offset(0),
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_green_offset(0),
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_blue_offset(0)
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{
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printf("Initializing TrueColor RenderControl\n");
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Visual *visual = display->screenInfo(_screen)->visual();
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unsigned long red_mask, green_mask, blue_mask;
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// find the offsets for each color in the visual's masks
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red_mask = visual->red_mask;
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green_mask = visual->green_mask;
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blue_mask = visual->blue_mask;
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while (! (red_mask & 1)) { _red_offset++; red_mask >>= 1; }
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while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
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while (! (blue_mask & 1)) { _blue_offset++; blue_mask >>= 1; }
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_red_shift = _green_shift = _blue_shift = 8;
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while (red_mask) { red_mask >>= 1; _red_shift--; }
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while (green_mask) { green_mask >>= 1; _green_shift--; }
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while (blue_mask) { blue_mask >>= 1; _blue_shift--; }
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}
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TrueRenderControl::~TrueRenderControl()
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{
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printf("Destroying TrueColor RenderControl\n");
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}
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static inline void renderPixel(XImage *im, unsigned char *dp,
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unsigned long pixel)
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{
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unsigned int bpp = im->bits_per_pixel + (im->byte_order == MSBFirst ? 1 : 0);
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switch (bpp) {
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case 8: // 8bpp
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*dp++ = pixel;
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break;
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case 16: // 16bpp LSB
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*dp++ = pixel;
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*dp++ = pixel >> 8;
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break;
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case 17: // 16bpp MSB
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*dp++ = pixel >> 8;
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*dp++ = pixel;
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break;
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case 24: // 24bpp LSB
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*dp++ = pixel;
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*dp++ = pixel >> 8;
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*dp++ = pixel >> 16;
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break;
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case 25: // 24bpp MSB
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*dp++ = pixel >> 16;
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*dp++ = pixel >> 8;
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*dp++ = pixel;
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break;
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case 32: // 32bpp LSB
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*dp++ = pixel;
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*dp++ = pixel >> 8;
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*dp++ = pixel >> 16;
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*dp++ = pixel >> 24;
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break;
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case 33: // 32bpp MSB
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*dp++ = pixel >> 24;
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*dp++ = pixel >> 16;
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*dp++ = pixel >> 8;
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*dp++ = pixel;
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break;
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default:
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assert(false); // wtf?
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}
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}
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void TrueRenderControl::drawBackground(Surface& sf,
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const RenderTexture &texture) const
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{
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assert(sf._screen == _screen);
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int w = sf.width(), h = sf.height();
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const ScreenInfo *info = display->screenInfo(_screen);
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XImage *im = XCreateImage(**display, info->visual(), info->depth(),
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ZPixmap, 0, NULL, w, h, 32, 0);
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unsigned char *data = new unsigned char[im->bytes_per_line * h];
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unsigned char *dp = data;
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unsigned int bytes_per_pixel = im->bits_per_pixel/8;
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for (int y = 0; y < h/3; ++y)
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for (int x = 0; x < w; ++x, dp += bytes_per_pixel)
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renderPixel(im, dp, (255*x/w) >> _red_shift << _red_offset);
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for (int y = 0; y < h/3; ++y)
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for (int x = 0; x < w; ++x, dp += bytes_per_pixel)
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renderPixel(im, dp, (255*x/w) >> _green_shift << _green_offset);
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for (int y = 0; y < h/3; ++y)
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for (int x = 0; x < w; ++x, dp += bytes_per_pixel)
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renderPixel(im, dp, (255*x/w) >> _blue_shift << _blue_offset);
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im->data = (char*) data;
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// sf.setPixmap(im);
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sf.setPixmap(texture.color());
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// sf.setPixmap(RenderColor(_screen, 0xff, 0xff, 0));
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delete [] im->data;
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im->data = NULL;
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XDestroyImage(im);
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}
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}
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