4 * Copyright 1998 Ove Kåven (with some help from Marcus Meissner)
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include "wine/wingdi16.h"
26 #include "wine/debug.h"
28 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
32 static int dispdib_multi = 0;
34 static WORD DISPDIB_Begin(WORD wFlags)
36 unsigned Xres,Yres,Depth;
38 switch(wFlags&DISPLAYDIB_MODE) {
39 case DISPLAYDIB_MODE_DEFAULT:
40 /* FIXME: is this supposed to autodetect? */
41 case DISPLAYDIB_MODE_320x200x8:
42 Xres=320; Yres=200; Depth=8; break;
43 case DISPLAYDIB_MODE_320x240x8:
44 Xres=320; Yres=240; Depth=8; break;
46 return DISPLAYDIB_NOTSUPPORTED;
48 /* more or less dummy calls to Death/Resurrection, for completeness */
49 /* FIXME: what arguments should they get? */
51 if (VGA_SetMode(Xres,Yres,Depth)) {
52 Resurrection16(0,0,0,0,0,0,0);
53 return DISPLAYDIB_NOTSUPPORTED;
55 return DISPLAYDIB_NOERROR;
58 static void DISPDIB_End(void)
60 Resurrection16(0,0,0,0,0,0,0); /* FIXME: arguments */
64 static void DISPDIB_Palette(LPBITMAPINFO lpbi)
66 VGA_SetQuadPalette(lpbi->bmiColors,0,256);
69 static void DISPDIB_Show(LPBITMAPINFOHEADER lpbi,LPSTR lpBits,WORD uFlags)
71 int Xofs,Yofs,Width=lpbi->biWidth,Height=lpbi->biHeight,Delta;
72 int Pitch = (Width + 3) & ~3;
73 unsigned int sPitch,sWidth,sHeight;
74 LPSTR surf = DOSMEM_MapDosToLinear(0xa0000);
76 if (VGA_GetMode(&sHeight,&sWidth,NULL)) return;
80 Height*=-Delta; Pitch*=Delta;
82 if (uFlags&DISPLAYDIB_NOCENTER) {
85 Xofs=(sWidth-Width)/2;
86 Yofs=(sHeight-Height)/2;
88 surf += (Yofs*sPitch)+Xofs;
89 if (Pitch<0) lpBits-=Pitch*(Height-1);
90 for (; Height; Height--,lpBits+=Pitch,surf+=sPitch) {
91 memcpy(surf,lpBits,Width);
99 /*********************************************************************
100 * DisplayDib (DISPDIB.1)
102 * Disables GDI and takes over the VGA screen to show DIBs in full screen.
106 * DISPLAYDIB_NOPALETTE: don't change palette
107 * DISPLAYDIB_NOCENTER: don't center bitmap
108 * DISPLAYDIB_NOWAIT: don't wait (for keypress) before returning
109 * DISPLAYDIB_BEGIN: start of multiple calls (does not restore the screen)
110 * DISPLAYDIB_END: end of multiple calls (restores the screen)
111 * DISPLAYDIB_MODE_DEFAULT: default display mode
112 * DISPLAYDIB_MODE_320x200x8: Standard VGA 320x200 256 colors
113 * DISPLAYDIB_MODE_320x240x8: Tweaked VGA 320x240 256 colors
117 * DISPLAYDIB_NOERROR: success
118 * DISPLAYDIB_NOTSUPPORTED: function not supported
119 * DISPLAYDIB_INVALIDDIB: null or invalid DIB header
120 * DISPLAYDIB_INVALIDFORMAT: invalid DIB format
121 * DISPLAYDIB_INVALIDTASK: not called from current task
125 * Waiting for keypresses is not implemented.
127 WORD WINAPI DisplayDib(
128 LPBITMAPINFO lpbi, /* [in] DIB header with resolution and palette */
129 LPSTR lpBits, /* [in] Bitmap bits to show */
130 WORD wFlags /* [in] */
136 if (wFlags&DISPLAYDIB_END) {
137 if (dispdib_multi) DISPDIB_End();
139 return DISPLAYDIB_NOERROR;
141 if (!dispdib_multi) {
142 ret=DISPDIB_Begin(wFlags);
145 if (wFlags&DISPLAYDIB_BEGIN) dispdib_multi = 1;
146 if (!(wFlags&DISPLAYDIB_NOPALETTE)) {
147 DISPDIB_Palette(lpbi);
149 /* FIXME: not sure if it's valid to draw images in DISPLAYDIB_BEGIN, so... */
151 DISPDIB_Show(&(lpbi->bmiHeader),lpBits,wFlags);
153 if (!(wFlags&DISPLAYDIB_NOWAIT)) {
154 FIXME("wait not implemented\n");
156 if (!dispdib_multi) DISPDIB_End();
158 FIXME( "broken, should be rewritten using ddraw\n" );
159 return DISPLAYDIB_NOERROR;