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os5_renderer.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001-2006 The ScummVM project
 * Copyright (C) 2002-2006 Chris Apers - PalmOS Backend
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL: https://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/backends/platform/PalmOS/Src/os5_renderer.cpp $
 * $Id: os5_renderer.cpp 22911 2006-06-04 12:12:24Z sev $
 *
 */

#include "be_os5.h"

void OSystem_PalmOS5::render_1x(RectangleType &r, PointType &p) {
      Coord o = 0;

      if (_overlayVisible) {
            int16 *src = _overlayP;
            int16 *dst =  _workScreenP;
            MemMove(dst, src, _screenWidth * _screenHeight * 2);

      } else {
            byte *src = _offScreenP;
            int16 *dst =  _workScreenP;
            int cnt = _screenWidth * _screenHeight;
            o = _current_shake_pos;

            do {
                  *dst++ = _nativePal[*src++];
            } while (--cnt);
      }

      p.x = _screenOffset.x;
      p.y = _screenOffset.y + o;
      RctSetRectangle(&r, 0, 0, _screenWidth, _screenHeight - o);
}

void OSystem_PalmOS5::render_landscape(RectangleType &r, PointType &p) {
      Coord x, y, o = 0;
      int16 *dst =  _workScreenP;

      if (_overlayVisible) {
            int16 *src = _overlayP;

            for (y = 0; y < 100; y++) {
                  // draw 2 lines
                  for (x = 0; x < 320; x++) {
                        *dst++ = *src++;
                        *dst++ = *src;
                        *dst++ = *src++;
                  }
                  // copy the second to the next line
                  MemMove(dst, dst - 480, 480 * 2);
                  dst += 480;
            }

      } else {
            byte *src = _offScreenP;
            o = _current_shake_pos;

            for (y = 0; y < 100; y++) {
                  // draw 2 lines
                  for (x = 0; x < 320; x++) {
                        *dst++ = _nativePal[*src++];
                        *dst++ = _nativePal[*src];
                        *dst++ = _nativePal[*src++];
                  }
                  // copy the second to the next line
                  MemMove(dst, dst - 480, 480 * 2);
                  dst += 480;
            }
      }

      p.x = _screenOffset.x;
      p.y = _screenOffset.y + o;
      RctSetRectangle(&r, 0, 0, 480, 300 - o);
}

void OSystem_PalmOS5::render_portrait(RectangleType &r, PointType &p) {
      Coord x, y, o = 0;
      int16 *dst =  _workScreenP;

      if (_overlayVisible) {
            int16 *src = _overlayP + 320 - 1;
            int16 *src2 = src;

            for (x = 0; x < 160; x++) {
                  for (y = 0; y < 100; y++) {
                        *dst++ = *src;
                        src += 320;
                        *dst++ = *src;
                        *dst++ = *src;
                        src += 320;
                  }
                  src = --src2;

                  for (y = 0; y < 100; y++) {
                        *dst++ = *src;
                        src += 320;
                        *dst++ = *src;
                        *dst++ = *src;
                        src += 320;
                  }
                  src = --src2;

                  MemMove(dst, dst - 300, 300 * 2);   // 300 = 200 x 1.5
                  dst += 300;
            }

      } else {
            byte *src = _offScreenP + 320 - 1;
            byte *src2 = src;
            o = _current_shake_pos;

            for (x = 0; x < 160; x++) {
                  for (y = 0; y < 100; y++) {
                        *dst++ = _nativePal[*src];
                        src += 320;
                        *dst++ = _nativePal[*src];
                        *dst++ = _nativePal[*src];
                        src += 320;
                  }
                  src = --src2;

                  for (y = 0; y < 100; y++) {
                        *dst++ = _nativePal[*src];
                        src += 320;
                        *dst++ = _nativePal[*src];
                        *dst++ = _nativePal[*src];
                        src += 320;
                  }
                  src = --src2;

                  MemMove(dst, dst - 300, 300 * 2);   // 300 = 200 x 1.5
                  dst += 300;
            }
      }

      p.y = _screenOffset.x;
      p.x = _screenOffset.y + o;
      RctSetRectangle(&r, 0, 0, 300 - o, 480);
}


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