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Add support for moving VGA controller window in framebuffer using SVGA 

interrupts. Detect correctly color plane modes and linear modes,
including Mode-X. Moved VESA interrupts into separate function and
implemented few more stubs.
This commit is contained in:
Jukka Heinonen 2002-08-13 03:17:42 +00:00 committed by Alexandre Julliard
parent c963d90f50
commit 77c239979a
3 changed files with 321 additions and 229 deletions
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69
dlls/winedos/int10.c
View File

@ -82,17 +82,17 @@ static void BIOS_SetCursorPos(BIOSDATA*data,unsigned page,unsigned X,unsigned Y)
* Added additional vga graphic support - 3/99
*/
void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
static void DOSVM_Int10Handler_VESA( CONTEXT86 *context )
{
BIOSDATA *data = DOSMEM_BiosData();
if(AH_reg(context) == 0x4F) { /* VESA functions */
switch(AL_reg(context)) {
case 0x00: /* GET SuperVGA INFORMATION */
TRACE("VESA GET SuperVGA INFORMATION\n");
memcpy(CTX_SEG_OFF_TO_LIN(context,context->SegEs,context->Edi),
DOSMEM_BiosSys()+DOSMEM_GetBiosSysStructOffset(OFF_VESAINFO),sizeof(VESAINFO));
DOSMEM_BiosSys()+DOSMEM_GetBiosSysStructOffset(OFF_VESAINFO),
sizeof(VESAINFO));
AL_reg(context) = 0x4f;
AH_reg(context) = 0x00; /* 0x00 = successful 0x01 = failed */
break;
@ -102,6 +102,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
AL_reg(context) = 0x4f;
AH_reg(context) = 0x01; /* 0x00 = successful 0x01 = failed */
break;
case 0x02: /* SET SuperVGA VIDEO MODE */
switch(BX_reg(context)) {
/* OEM Video Modes */
@ -242,59 +243,100 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
AL_reg(context) = 0x4f;
AH_reg(context) = 0x00;
break;
case 0x03: /* VESA SuperVGA BIOS - GET CURRENT VIDEO MODE */
AL_reg(context) = 0x4f;
AH_reg(context) = 0x00; /* should probly check if a vesa mode has ben set */
BX_reg(context) = data->VideoMode;
break;
case 0x04: /* VESA SuperVGA BIOS - SAVE/RESTORE SuperVGA VIDEO STATE */
ERR("VESA SAVE/RESTORE Video State - Not Implemented\n");
/* AL_reg(context) = 0x4f; = supported so not set since not implemented */
/* maybe we should do this instead ? */
/* AH_reg(context = 0x01; not implemented so just fail */
break;
case 0x05: /* VESA SuperVGA BIOS - CPU VIDEO MEMORY CONTROL */
ERR("VESA CPU VIDEO MEMORY CONTROL\n");
/* AL_reg(context) = 0x4f; = supported so not set since not implemented */
/* maybe we should do this instead ? */
/* AH_reg(context = 0x001; not implemented so just fail */
/*
* This subfunction supports only Window A (BL_reg == 0) and
* is assumes that window granularity is 64k.
*/
switch(BH_reg(context)) {
case 0x00: /* select video memory window */
AL_reg(context) = 0x4f; /* function supported */
if(BL_reg(context) == 0) {
VGA_SetWindowStart(DX_reg(context) * 64 * 1024);
AH_reg(context) = 0x00; /* status: successful */
} else
AH_reg(context) = 0x01; /* status: failed */
break;
case 0x01: /* get video memory window */
AL_reg(context) = 0x4f; /* function supported */
if(BL_reg(context) == 0) {
DX_reg(context) = VGA_GetWindowStart() / 64 / 1024;
AH_reg(context) = 0x00; /* status: successful */
} else
AH_reg(context) = 0x01; /* status: failed */
break;
default:
INT_BARF( context, 0x10 );
}
break;
case 0x06: /* VESA GET/SET LOGICAL SCAN LINE LENGTH */
ERR("VESA GET/SET LOGICAL SCAN LINE LENGTH - Not Implemented\n");
/* AL_reg(context) = 0x4f; = supported so not set since not implemented */
/* maybe we should do this instead ? */
/* AH_reg(context = 0x001; not implemented so just fail */
break;
case 0x07: /* GET/SET DISPLAY START */
ERR("VESA GET/SET DISPLAY START - Not Implemented\n");
/* AL_reg(context) = 0x4f; = supported so not set since not implemented */
/* maybe we should do this instead ? */
/* AH_reg(context = 0x001; not implemented so just fail */
break;
case 0x08: /* GET/SET DAC PALETTE CONTROL */
ERR("VESA GET/SET DAC PALETTE CONTROL- Not Implemented\n");
/* AL_reg(context) = 0x4f; = supported so not set since not implemented */
/* maybe we should do this instead ? */
/* AH_reg(context = 0x001; not implemented so just fail */
break;
case 0x09: /* SET PALETTE ENTRIES */
FIXME("VESA Set palette entries - not implemented\n");
break;
case 0x0a: /* GET PROTECTED-MODE CODE */
FIXME("VESA Get protected-mode code - not implemented\n");
break;
case 0x10: /* Display Power Management Extensions */
FIXME("VESA Display Power Management Extensions - not implemented\n");
break;
case 0xef: /* get video mode for hercules-compatibles */
/* There's no reason to really support this */
/* is there?....................(A.C.) */
TRACE("Just report the video not hercules compatible\n");
DX_reg(context) = 0xffff;
break;
case 0xff: /* Turn VESA ON/OFF */
/* i dont know what to do */
break;
default:
FIXME("VESA Function (0x%x) - Not Supported\n", AH_reg(context));
break;
}
}
else {
void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
{
BIOSDATA *data = DOSMEM_BiosData();
switch(AH_reg(context)) {
@ -364,7 +406,10 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
break;
case 0x01: /* SET CURSOR SHAPE */
TRACE("Set Cursor Shape start %d end %d options %d\n", CH_reg(context) & 0x1f, CL_reg(context) & 0x1f, CH_reg(context) & 0xe0);
TRACE("Set Cursor Shape start %d end %d options %d\n",
CH_reg(context) & 0x1f,
CL_reg(context) & 0x1f,
CH_reg(context) & 0xe0);
data->VideoCursorType = CX_reg(context); /* direct copy */
VGA_SetCursorShape(CH_reg(context), CL_reg(context));
break;
@ -757,12 +802,16 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
TRACE("Just report the video not hercules compatible\n");
DX_reg(context) = 0xffff;
break;
case 0x4f: /* VESA */
DOSVM_Int10Handler_VESA(context);
break;
default:
FIXME("Unknown - 0x%x\n", AH_reg(context));
INT_BARF( context, 0x10 );
}
}
}
static void scroll_window(int direction, char lines, char row1,
char col1, char row2, char col2, char attribute)

79
dlls/winedos/vga.c
View File

@ -62,6 +62,11 @@ static HANDLE poll_timer;
* VGA framebuffers are always larger than display size and
* SVGA framebuffers may also be.
* vga_fb_data: Pointer to framebuffer start.
* vga_fb_window: Offset of 64k window 0xa0000 in bytes from framebuffer start.
* This value is >= 0, if mode uses linear framebuffer and
* -1, if mode uses color planes. This value is fixed
* in all modes except 0x13 (256 color VGA) where
* 0 means normal mode and -1 means Mode-X (unchained mode).
*/
static int vga_fb_width;
static int vga_fb_height;
@ -70,6 +75,7 @@ static int vga_fb_pitch;
static int vga_fb_offset;
static int vga_fb_size = 0;
static void *vga_fb_data = 0;
static int vga_fb_window = 0;
static BYTE vga_text_attr;
static char *textbuf_old = NULL;
@ -400,6 +406,8 @@ int VGA_SetMode(unsigned Xres,unsigned Yres,unsigned Depth)
par.Yres = 480;
}
VGA_SetWindowStart((Depth < 8) ? -1 : 0);
par.Depth = (Depth < 8) ? 8 : Depth;
vga_mode_initialized = TRUE;
@ -508,6 +516,38 @@ void VGA_Unlock(void)
IDirectDrawSurface_Unlock(lpddsurf,sdesc.lpSurface);
}
/*
* Set start of 64k window at 0xa0000 in bytes.
* If value is -1, initialize color plane support.
* If value is >= 0, window contains direct copy of framebuffer.
*/
void VGA_SetWindowStart(int start)
{
if(start == vga_fb_window)
return;
if(vga_fb_window == -1)
FIXME("Remove VGA memory emulation.\n");
else
memmove(vga_fb_data + vga_fb_window, DOSMEM_MapDosToLinear(0xa0000), 64 * 1024);
vga_fb_window = start;
if(vga_fb_window == -1)
FIXME("Install VGA memory emulation.\n");
else
memmove(DOSMEM_MapDosToLinear(0xa0000), vga_fb_data + vga_fb_window, 64 * 1024);
}
/*
* Get start of 64k window at 0xa0000 in bytes.
* Value is -1 in color plane modes.
*/
int VGA_GetWindowStart()
{
return vga_fb_window;
}
/*** TEXT MODE ***/
/* prepare the text mode video memory copy that is used to only
@ -770,24 +810,6 @@ void VGA_GetCharacterAtCursor(BYTE *ascii, BYTE *attr)
/*** CONTROL ***/
/*
* Copy part of VGA framebuffer to VGA window.
*/
static void VGA_CopyFrameToWindow(void)
{
/* FIXME: add implementation */
}
/*
* Copy contents of VGA window to VGA framebuffer.
*/
static void VGA_CopyWindowToFrame(void)
{
/* FIXME: fix implementation */
char *dat = DOSMEM_MapDosToLinear(0xa0000);
memmove(vga_fb_data, dat, 65536);
}
/* FIXME: optimize by doing this only if the data has actually changed
* (in a way similar to DIBSection, perhaps) */
static void VGA_Poll_Graphics(void)
@ -803,7 +825,8 @@ static void VGA_Poll_Graphics(void)
/*
* Synchronize framebuffer contents.
*/
VGA_CopyWindowToFrame();
if(vga_fb_window != -1)
memmove(vga_fb_data + vga_fb_window, DOSMEM_MapDosToLinear(0xa0000), 64 * 1024);
/*
* Double VGA framebuffer (320x200 -> 640x400), if needed.
@ -897,6 +920,19 @@ void VGA_ioport_out( WORD port, BYTE val )
vga_index_3c4 = val;
break;
case 0x3c5:
switch(vga_index_3c4) {
case 0x04: /* Sequencer: Memory Mode Register */
if(vga_fb_depth == 8)
VGA_SetWindowStart((val & 8) ? 0 : -1);
else
FIXME("Memory Mode Register not supported in this mode.\n");
break;
default:
FIXME("Unsupported index, register 0x3c4: 0x%02x (value 0x%02x)\n",
vga_index_3c4, val);
}
break;
FIXME("Unsupported index, register 0x3c4: 0x%02x (value 0x%02x)\n",
vga_index_3c4, val);
break;
@ -938,9 +974,14 @@ BYTE VGA_ioport_in( WORD port )
vga_index_3c0);
return 0xff;
case 0x3c5:
switch(vga_index_3c4) {
case 0x04: /* Sequencer: Memory Mode Register */
return (VGA_GetWindowStart() == -1) ? 0xf7 : 0xff;
default:
FIXME("Unsupported index, register 0x3c4: 0x%02x\n",
vga_index_3c4);
return 0xff;
}
case 0x3cf:
FIXME("Unsupported index, register 0x3ce: 0x%02x\n",
vga_index_3ce);

2
dlls/winedos/vga.h
View File

@ -36,6 +36,8 @@ void VGA_Get16Palette(char *Table);
void VGA_SetQuadPalette(RGBQUAD*color,int start,int len);
LPSTR VGA_Lock(unsigned*Pitch,unsigned*Height,unsigned*Width,unsigned*Depth);
void VGA_Unlock(void);
void VGA_SetWindowStart(int start);
int VGA_GetWindowStart();
/* text mode */
int VGA_SetAlphaMode(unsigned Xres,unsigned Yres);