4 * Copyright 1998 Ove Kåven (with some help from Marcus Meissner)
11 #include "wine/wingdi16.h"
15 #include "debugtools.h"
17 DEFAULT_DEBUG_CHANNEL(ddraw);
19 static int dispdib_multi = 0;
21 static WORD DISPDIB_Begin(WORD wFlags)
23 unsigned Xres,Yres,Depth;
25 switch(wFlags&DISPLAYDIB_MODE) {
26 case DISPLAYDIB_MODE_DEFAULT:
27 /* FIXME: is this supposed to autodetect? */
28 case DISPLAYDIB_MODE_320x200x8:
29 Xres=320; Yres=200; Depth=8; break;
30 case DISPLAYDIB_MODE_320x240x8:
31 Xres=320; Yres=240; Depth=8; break;
33 return DISPLAYDIB_NOTSUPPORTED;
35 /* more or less dummy calls to Death/Resurrection, for completeness */
36 /* FIXME: what arguments should they get? */
38 if (VGA_SetMode(Xres,Yres,Depth)) {
39 Resurrection16(0,0,0,0,0,0,0);
40 return DISPLAYDIB_NOTSUPPORTED;
42 return DISPLAYDIB_NOERROR;
45 static void DISPDIB_End(void)
47 Resurrection16(0,0,0,0,0,0,0); /* FIXME: arguments */
51 static void DISPDIB_Palette(LPBITMAPINFO lpbi)
53 VGA_SetQuadPalette(lpbi->bmiColors,0,256);
56 static void DISPDIB_Show(LPBITMAPINFOHEADER lpbi,LPSTR lpBits,WORD uFlags)
58 int Xofs,Yofs,Width=lpbi->biWidth,Height=lpbi->biHeight,Delta;
59 unsigned Pitch=(Width+3)&~3,sPitch,sWidth,sHeight;
60 LPSTR surf = DOSMEM_MapDosToLinear(0xa0000);
62 if (VGA_GetMode(&sHeight,&sWidth,NULL)) return;
66 Height*=-Delta; Pitch*=Delta;
68 if (uFlags&DISPLAYDIB_NOCENTER) {
71 Xofs=(sWidth-Width)/2;
72 Yofs=(sHeight-Height)/2;
74 surf += (Yofs*sPitch)+Xofs;
75 if (Pitch<0) lpBits-=Pitch*(Height-1);
76 for (; Height; Height--,lpBits+=Pitch,surf+=sPitch) {
77 memcpy(surf,lpBits,Width);
83 /*********************************************************************
84 * DisplayDib (DISPDIB.1)
86 * Disables GDI and takes over the VGA screen to show DIBs in full screen.
90 * DISPLAYDIB_NOPALETTE: don't change palette
91 * DISPLAYDIB_NOCENTER: don't center bitmap
92 * DISPLAYDIB_NOWAIT: don't wait (for keypress) before returning
93 * DISPLAYDIB_BEGIN: start of multiple calls (does not restore the screen)
94 * DISPLAYDIB_END: end of multiple calls (restores the screen)
95 * DISPLAYDIB_MODE_DEFAULT: default display mode
96 * DISPLAYDIB_MODE_320x200x8: Standard VGA 320x200 256 colors
97 * DISPLAYDIB_MODE_320x240x8: Tweaked VGA 320x240 256 colors
101 * DISPLAYDIB_NOERROR: success
102 * DISPLAYDIB_NOTSUPPORTED: function not supported
103 * DISPLAYDIB_INVALIDDIB: null or invalid DIB header
104 * DISPLAYDIB_INVALIDFORMAT: invalid DIB format
105 * DISPLAYDIB_INVALIDTASK: not called from current task
109 * Waiting for keypresses is not implemented.
111 WORD WINAPI DisplayDib(
112 LPBITMAPINFO lpbi, /* DIB header with resolution and palette */
113 LPSTR lpBits, /* Bitmap bits to show */
119 if (wFlags&DISPLAYDIB_END) {
120 if (dispdib_multi) DISPDIB_End();
122 return DISPLAYDIB_NOERROR;
124 if (!dispdib_multi) {
125 ret=DISPDIB_Begin(wFlags);
128 if (wFlags&DISPLAYDIB_BEGIN) dispdib_multi = 1;
129 if (!(wFlags&DISPLAYDIB_NOPALETTE)) {
130 DISPDIB_Palette(lpbi);
132 /* FIXME: not sure if it's valid to draw images in DISPLAYDIB_BEGIN, so... */
134 DISPDIB_Show(&(lpbi->bmiHeader),lpBits,wFlags);
136 if (!(wFlags&DISPLAYDIB_NOWAIT)) {
137 FIXME("wait not implemented\n");
139 if (!dispdib_multi) DISPDIB_End();
140 return DISPLAYDIB_NOERROR;