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 int Pitch
= (Width
+ 3) & ~3;
60 unsigned int sPitch
,sWidth
,sHeight
;
61 LPSTR surf
= DOSMEM_MapDosToLinear(0xa0000);
63 if (VGA_GetMode(&sHeight
,&sWidth
,NULL
)) return;
67 Height
*=-Delta
; Pitch
*=Delta
;
69 if (uFlags
&DISPLAYDIB_NOCENTER
) {
72 Xofs
=(sWidth
-Width
)/2;
73 Yofs
=(sHeight
-Height
)/2;
75 surf
+= (Yofs
*sPitch
)+Xofs
;
76 if (Pitch
<0) lpBits
-=Pitch
*(Height
-1);
77 for (; Height
; Height
--,lpBits
+=Pitch
,surf
+=sPitch
) {
78 memcpy(surf
,lpBits
,Width
);
84 /*********************************************************************
85 * DisplayDib (DISPDIB.1)
87 * Disables GDI and takes over the VGA screen to show DIBs in full screen.
91 * DISPLAYDIB_NOPALETTE: don't change palette
92 * DISPLAYDIB_NOCENTER: don't center bitmap
93 * DISPLAYDIB_NOWAIT: don't wait (for keypress) before returning
94 * DISPLAYDIB_BEGIN: start of multiple calls (does not restore the screen)
95 * DISPLAYDIB_END: end of multiple calls (restores the screen)
96 * DISPLAYDIB_MODE_DEFAULT: default display mode
97 * DISPLAYDIB_MODE_320x200x8: Standard VGA 320x200 256 colors
98 * DISPLAYDIB_MODE_320x240x8: Tweaked VGA 320x240 256 colors
102 * DISPLAYDIB_NOERROR: success
103 * DISPLAYDIB_NOTSUPPORTED: function not supported
104 * DISPLAYDIB_INVALIDDIB: null or invalid DIB header
105 * DISPLAYDIB_INVALIDFORMAT: invalid DIB format
106 * DISPLAYDIB_INVALIDTASK: not called from current task
110 * Waiting for keypresses is not implemented.
112 WORD WINAPI
DisplayDib(
113 LPBITMAPINFO lpbi
, /* [in] DIB header with resolution and palette */
114 LPSTR lpBits
, /* [in] Bitmap bits to show */
115 WORD wFlags
/* [in] */
120 if (wFlags
&DISPLAYDIB_END
) {
121 if (dispdib_multi
) DISPDIB_End();
123 return DISPLAYDIB_NOERROR
;
125 if (!dispdib_multi
) {
126 ret
=DISPDIB_Begin(wFlags
);
129 if (wFlags
&DISPLAYDIB_BEGIN
) dispdib_multi
= 1;
130 if (!(wFlags
&DISPLAYDIB_NOPALETTE
)) {
131 DISPDIB_Palette(lpbi
);
133 /* FIXME: not sure if it's valid to draw images in DISPLAYDIB_BEGIN, so... */
135 DISPDIB_Show(&(lpbi
->bmiHeader
),lpBits
,wFlags
);
137 if (!(wFlags
&DISPLAYDIB_NOWAIT
)) {
138 FIXME("wait not implemented\n");
140 if (!dispdib_multi
) DISPDIB_End();
141 return DISPLAYDIB_NOERROR
;