mirror of
https://github.com/reactos/reactos.git
synced 2024-08-26 21:28:48 +00:00
606 lines
20 KiB
C
606 lines
20 KiB
C
/*
|
|
* PROJECT: ReactOS Framebuffer Display Driver
|
|
* LICENSE: Microsoft NT4 DDK Sample Code License
|
|
* FILE: win32ss/drivers/displays/framebuf_new/screen.c
|
|
* PURPOSE: Surface, Screen and PDEV support/initialization
|
|
* PROGRAMMERS: Copyright (c) 1992-1995 Microsoft Corporation
|
|
* ReactOS Portable Systems Group
|
|
*/
|
|
|
|
#include "driver.h"
|
|
|
|
#define SYSTM_LOGFONT {16,7,0,0,700,0,0,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,VARIABLE_PITCH | FF_DONTCARE,L"System"}
|
|
#define HELVE_LOGFONT {12,9,0,0,400,0,0,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,CLIP_STROKE_PRECIS,PROOF_QUALITY,VARIABLE_PITCH | FF_DONTCARE,L"MS Sans Serif"}
|
|
#define COURI_LOGFONT {12,9,0,0,400,0,0,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,CLIP_STROKE_PRECIS,PROOF_QUALITY,FIXED_PITCH | FF_DONTCARE, L"Courier"}
|
|
|
|
// This is the basic devinfo for a default driver. This is used as a base and customized based
|
|
// on information passed back from the miniport driver.
|
|
|
|
const DEVINFO gDevInfoFrameBuffer = {
|
|
( GCAPS_OPAQUERECT
|
|
// eVb: 2.8 [DDK CHANGE] - No dithering support
|
|
// eVb: 2.8 [END]
|
|
), /* Graphics capabilities */
|
|
SYSTM_LOGFONT, /* Default font description */
|
|
HELVE_LOGFONT, /* ANSI variable font description */
|
|
COURI_LOGFONT, /* ANSI fixed font description */
|
|
0, /* Count of device fonts */
|
|
0, /* Preferred DIB format */
|
|
// eVb: 2.9 [DDK CHANGE] - No dithering support
|
|
0, /* Width of color dither */
|
|
0, /* Height of color dither */
|
|
// eVb: 2.9 [END]
|
|
0 /* Default palette to use for this device */
|
|
};
|
|
|
|
/******************************Public*Routine******************************\
|
|
* bInitSURF
|
|
*
|
|
* Enables the surface. Maps the frame buffer into memory.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL NTAPI bInitSURF(PPDEV ppdev, BOOL bFirst)
|
|
{
|
|
DWORD returnedDataLength;
|
|
DWORD MaxWidth, MaxHeight;
|
|
VIDEO_MEMORY videoMemory;
|
|
VIDEO_MEMORY_INFORMATION videoMemoryInformation;
|
|
// eVb: 2.1 [DDK Change] - Support new VGA Miniport behavior w.r.t updated framebuffer remapping
|
|
ULONG RemappingNeeded = 0;
|
|
// eVb: 2.1 [END]
|
|
//
|
|
// Set the current mode into the hardware.
|
|
//
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_SET_CURRENT_MODE,
|
|
&(ppdev->ulMode),
|
|
sizeof(ULONG),
|
|
// eVb: 2.2 [DDK Change] - Support new VGA Miniport behavior w.r.t updated framebuffer remapping
|
|
&RemappingNeeded,
|
|
sizeof(ULONG),
|
|
// eVb: 2.2 [END]
|
|
&returnedDataLength))
|
|
{
|
|
RIP("DISP bInitSURF failed IOCTL_SET_MODE\n");
|
|
return(FALSE);
|
|
}
|
|
|
|
//
|
|
// If this is the first time we enable the surface we need to map in the
|
|
// memory also.
|
|
//
|
|
// eVb: 2.3 [DDK Change] - Support new VGA Miniport behavior w.r.t updated framebuffer remapping
|
|
if (bFirst || RemappingNeeded)
|
|
{
|
|
// eVb: 2.3 [END]
|
|
videoMemory.RequestedVirtualAddress = NULL;
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_MAP_VIDEO_MEMORY,
|
|
&videoMemory,
|
|
sizeof(VIDEO_MEMORY),
|
|
&videoMemoryInformation,
|
|
sizeof(VIDEO_MEMORY_INFORMATION),
|
|
&returnedDataLength))
|
|
{
|
|
RIP("DISP bInitSURF failed IOCTL_VIDEO_MAP\n");
|
|
return(FALSE);
|
|
}
|
|
|
|
ppdev->pjScreen = (PBYTE)(videoMemoryInformation.FrameBufferBase);
|
|
|
|
if (videoMemoryInformation.FrameBufferBase !=
|
|
videoMemoryInformation.VideoRamBase)
|
|
{
|
|
RIP("VideoRamBase does not correspond to FrameBufferBase\n");
|
|
}
|
|
// eVb: 2.4 [DDK Change] - Make sure frame buffer mapping worked
|
|
//
|
|
// Make sure we can access this video memory
|
|
//
|
|
|
|
*(PULONG)(ppdev->pjScreen) = 0xaa55aa55;
|
|
|
|
if (*(PULONG)(ppdev->pjScreen) != 0xaa55aa55) {
|
|
|
|
DISPDBG((1, "Frame buffer memory is not accessible.\n"));
|
|
return(FALSE);
|
|
}
|
|
// eVb: 2.4 [END]
|
|
ppdev->cScreenSize = videoMemoryInformation.VideoRamLength;
|
|
|
|
//
|
|
// Initialize the head of the offscreen list to NULL.
|
|
//
|
|
|
|
ppdev->pOffscreenList = NULL;
|
|
|
|
// It's a hardware pointer; set up pointer attributes.
|
|
|
|
MaxHeight = ppdev->PointerCapabilities.MaxHeight;
|
|
|
|
// Allocate space for two DIBs (data/mask) for the pointer. If this
|
|
// device supports a color Pointer, we will allocate a larger bitmap.
|
|
// If this is a color bitmap we allocate for the largest possible
|
|
// bitmap because we have no idea of what the pixel depth might be.
|
|
|
|
// Width rounded up to nearest byte multiple
|
|
|
|
if (!(ppdev->PointerCapabilities.Flags & VIDEO_MODE_COLOR_POINTER))
|
|
{
|
|
MaxWidth = (ppdev->PointerCapabilities.MaxWidth + 7) / 8;
|
|
}
|
|
else
|
|
{
|
|
MaxWidth = ppdev->PointerCapabilities.MaxWidth * sizeof(DWORD);
|
|
}
|
|
|
|
ppdev->cjPointerAttributes =
|
|
sizeof(VIDEO_POINTER_ATTRIBUTES) +
|
|
((sizeof(UCHAR) * MaxWidth * MaxHeight) * 2);
|
|
|
|
ppdev->pPointerAttributes = (PVIDEO_POINTER_ATTRIBUTES)
|
|
EngAllocMem(0, ppdev->cjPointerAttributes, ALLOC_TAG);
|
|
|
|
if (ppdev->pPointerAttributes == NULL) {
|
|
|
|
DISPDBG((0, "bInitPointer EngAllocMem failed\n"));
|
|
return(FALSE);
|
|
}
|
|
|
|
ppdev->pPointerAttributes->Flags = ppdev->PointerCapabilities.Flags;
|
|
ppdev->pPointerAttributes->WidthInBytes = MaxWidth;
|
|
ppdev->pPointerAttributes->Width = ppdev->PointerCapabilities.MaxWidth;
|
|
ppdev->pPointerAttributes->Height = MaxHeight;
|
|
ppdev->pPointerAttributes->Column = 0;
|
|
ppdev->pPointerAttributes->Row = 0;
|
|
ppdev->pPointerAttributes->Enable = 0;
|
|
}
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vDisableSURF
|
|
*
|
|
* Disable the surface. Un-Maps the frame in memory.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID NTAPI vDisableSURF(PPDEV ppdev)
|
|
{
|
|
DWORD returnedDataLength;
|
|
VIDEO_MEMORY videoMemory;
|
|
|
|
videoMemory.RequestedVirtualAddress = (PVOID) ppdev->pjScreen;
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_UNMAP_VIDEO_MEMORY,
|
|
&videoMemory,
|
|
sizeof(VIDEO_MEMORY),
|
|
NULL,
|
|
0,
|
|
&returnedDataLength))
|
|
{
|
|
RIP("DISP vDisableSURF failed IOCTL_VIDEO_UNMAP\n");
|
|
}
|
|
}
|
|
|
|
|
|
/******************************Public*Routine******************************\
|
|
* bInitPDEV
|
|
*
|
|
* Determine the mode we should be in based on the DEVMODE passed in.
|
|
* Query mini-port to get information needed to fill in the DevInfo and the
|
|
* GdiInfo .
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL NTAPI bInitPDEV(
|
|
PPDEV ppdev,
|
|
DEVMODEW *pDevMode,
|
|
GDIINFO *pGdiInfo,
|
|
DEVINFO *pDevInfo)
|
|
{
|
|
ULONG cModes;
|
|
PVIDEO_MODE_INFORMATION pVideoBuffer, pVideoModeSelected, pVideoTemp;
|
|
VIDEO_COLOR_CAPABILITIES colorCapabilities;
|
|
ULONG ulTemp;
|
|
BOOL bSelectDefault;
|
|
ULONG cbModeSize;
|
|
|
|
//
|
|
// calls the miniport to get mode information.
|
|
//
|
|
|
|
cModes = getAvailableModes(ppdev->hDriver, &pVideoBuffer, &cbModeSize);
|
|
|
|
if (cModes == 0)
|
|
{
|
|
return(FALSE);
|
|
}
|
|
|
|
//
|
|
// Now see if the requested mode has a match in that table.
|
|
//
|
|
|
|
pVideoModeSelected = NULL;
|
|
pVideoTemp = pVideoBuffer;
|
|
|
|
if ((pDevMode->dmPelsWidth == 0) &&
|
|
(pDevMode->dmPelsHeight == 0) &&
|
|
(pDevMode->dmBitsPerPel == 0) &&
|
|
(pDevMode->dmDisplayFrequency == 0))
|
|
{
|
|
DISPDBG((2, "Default mode requested"));
|
|
bSelectDefault = TRUE;
|
|
}
|
|
else
|
|
{
|
|
// eVb: 2.5 [DDK Change] - Add missing newlines to debug output
|
|
DISPDBG((2, "Requested mode...\n"));
|
|
DISPDBG((2, " Screen width -- %li\n", pDevMode->dmPelsWidth));
|
|
DISPDBG((2, " Screen height -- %li\n", pDevMode->dmPelsHeight));
|
|
DISPDBG((2, " Bits per pel -- %li\n", pDevMode->dmBitsPerPel));
|
|
DISPDBG((2, " Frequency -- %li\n", pDevMode->dmDisplayFrequency));
|
|
// eVb: 2.5 [END]
|
|
bSelectDefault = FALSE;
|
|
}
|
|
|
|
while (cModes--)
|
|
{
|
|
if (pVideoTemp->Length != 0)
|
|
{
|
|
if (bSelectDefault ||
|
|
((pVideoTemp->VisScreenWidth == pDevMode->dmPelsWidth) &&
|
|
(pVideoTemp->VisScreenHeight == pDevMode->dmPelsHeight) &&
|
|
(pVideoTemp->BitsPerPlane *
|
|
pVideoTemp->NumberOfPlanes == pDevMode->dmBitsPerPel) &&
|
|
(pVideoTemp->Frequency == pDevMode->dmDisplayFrequency)))
|
|
{
|
|
pVideoModeSelected = pVideoTemp;
|
|
DISPDBG((3, "Found a match\n")) ;
|
|
break;
|
|
}
|
|
}
|
|
|
|
pVideoTemp = (PVIDEO_MODE_INFORMATION)
|
|
(((PUCHAR)pVideoTemp) + cbModeSize);
|
|
}
|
|
|
|
//
|
|
// If no mode has been found, return an error
|
|
//
|
|
|
|
if (pVideoModeSelected == NULL)
|
|
{
|
|
EngFreeMem(pVideoBuffer);
|
|
DISPDBG((0,"DISP bInitPDEV failed - no valid modes\n"));
|
|
return(FALSE);
|
|
}
|
|
|
|
//
|
|
// Fill in the GDIINFO data structure with the information returned from
|
|
// the kernel driver.
|
|
//
|
|
|
|
ppdev->ulMode = pVideoModeSelected->ModeIndex;
|
|
ppdev->cxScreen = pVideoModeSelected->VisScreenWidth;
|
|
ppdev->cyScreen = pVideoModeSelected->VisScreenHeight;
|
|
ppdev->ulBitCount = pVideoModeSelected->BitsPerPlane *
|
|
pVideoModeSelected->NumberOfPlanes;
|
|
ppdev->lDeltaScreen = pVideoModeSelected->ScreenStride;
|
|
|
|
ppdev->flRed = pVideoModeSelected->RedMask;
|
|
ppdev->flGreen = pVideoModeSelected->GreenMask;
|
|
ppdev->flBlue = pVideoModeSelected->BlueMask;
|
|
|
|
|
|
pGdiInfo->ulVersion = GDI_DRIVER_VERSION;
|
|
pGdiInfo->ulTechnology = DT_RASDISPLAY;
|
|
pGdiInfo->ulHorzSize = pVideoModeSelected->XMillimeter;
|
|
pGdiInfo->ulVertSize = pVideoModeSelected->YMillimeter;
|
|
|
|
pGdiInfo->ulHorzRes = ppdev->cxScreen;
|
|
pGdiInfo->ulVertRes = ppdev->cyScreen;
|
|
pGdiInfo->ulPanningHorzRes = ppdev->cxScreen;
|
|
pGdiInfo->ulPanningVertRes = ppdev->cyScreen;
|
|
pGdiInfo->cBitsPixel = pVideoModeSelected->BitsPerPlane;
|
|
pGdiInfo->cPlanes = pVideoModeSelected->NumberOfPlanes;
|
|
pGdiInfo->ulVRefresh = pVideoModeSelected->Frequency;
|
|
pGdiInfo->ulBltAlignment = 1; // We don't have accelerated screen-
|
|
// to-screen blts, and any
|
|
// window alignment is okay
|
|
|
|
pGdiInfo->ulLogPixelsX = pDevMode->dmLogPixels;
|
|
pGdiInfo->ulLogPixelsY = pDevMode->dmLogPixels;
|
|
|
|
#ifdef MIPS
|
|
if (ppdev->ulBitCount == 8)
|
|
pGdiInfo->flTextCaps = (TC_RA_ABLE | TC_SCROLLBLT);
|
|
else
|
|
#endif
|
|
pGdiInfo->flTextCaps = TC_RA_ABLE;
|
|
|
|
pGdiInfo->flRaster = 0; // flRaster is reserved by DDI
|
|
|
|
pGdiInfo->ulDACRed = pVideoModeSelected->NumberRedBits;
|
|
pGdiInfo->ulDACGreen = pVideoModeSelected->NumberGreenBits;
|
|
pGdiInfo->ulDACBlue = pVideoModeSelected->NumberBlueBits;
|
|
|
|
pGdiInfo->ulAspectX = 0x24; // One-to-one aspect ratio
|
|
pGdiInfo->ulAspectY = 0x24;
|
|
pGdiInfo->ulAspectXY = 0x33;
|
|
|
|
pGdiInfo->xStyleStep = 1; // A style unit is 3 pels
|
|
pGdiInfo->yStyleStep = 1;
|
|
pGdiInfo->denStyleStep = 3;
|
|
|
|
pGdiInfo->ptlPhysOffset.x = 0;
|
|
pGdiInfo->ptlPhysOffset.y = 0;
|
|
pGdiInfo->szlPhysSize.cx = 0;
|
|
pGdiInfo->szlPhysSize.cy = 0;
|
|
|
|
// RGB and CMY color info.
|
|
|
|
//
|
|
// try to get it from the miniport.
|
|
// if the miniport doesn ot support this feature, use defaults.
|
|
//
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_QUERY_COLOR_CAPABILITIES,
|
|
NULL,
|
|
0,
|
|
&colorCapabilities,
|
|
sizeof(VIDEO_COLOR_CAPABILITIES),
|
|
&ulTemp))
|
|
{
|
|
|
|
DISPDBG((2, "getcolorCapabilities failed \n"));
|
|
|
|
pGdiInfo->ciDevice.Red.x = 6700;
|
|
pGdiInfo->ciDevice.Red.y = 3300;
|
|
pGdiInfo->ciDevice.Red.Y = 0;
|
|
pGdiInfo->ciDevice.Green.x = 2100;
|
|
pGdiInfo->ciDevice.Green.y = 7100;
|
|
pGdiInfo->ciDevice.Green.Y = 0;
|
|
pGdiInfo->ciDevice.Blue.x = 1400;
|
|
pGdiInfo->ciDevice.Blue.y = 800;
|
|
pGdiInfo->ciDevice.Blue.Y = 0;
|
|
pGdiInfo->ciDevice.AlignmentWhite.x = 3127;
|
|
pGdiInfo->ciDevice.AlignmentWhite.y = 3290;
|
|
pGdiInfo->ciDevice.AlignmentWhite.Y = 0;
|
|
|
|
pGdiInfo->ciDevice.RedGamma = 20000;
|
|
pGdiInfo->ciDevice.GreenGamma = 20000;
|
|
pGdiInfo->ciDevice.BlueGamma = 20000;
|
|
|
|
}
|
|
else
|
|
{
|
|
pGdiInfo->ciDevice.Red.x = colorCapabilities.RedChromaticity_x;
|
|
pGdiInfo->ciDevice.Red.y = colorCapabilities.RedChromaticity_y;
|
|
pGdiInfo->ciDevice.Red.Y = 0;
|
|
pGdiInfo->ciDevice.Green.x = colorCapabilities.GreenChromaticity_x;
|
|
pGdiInfo->ciDevice.Green.y = colorCapabilities.GreenChromaticity_y;
|
|
pGdiInfo->ciDevice.Green.Y = 0;
|
|
pGdiInfo->ciDevice.Blue.x = colorCapabilities.BlueChromaticity_x;
|
|
pGdiInfo->ciDevice.Blue.y = colorCapabilities.BlueChromaticity_y;
|
|
pGdiInfo->ciDevice.Blue.Y = 0;
|
|
pGdiInfo->ciDevice.AlignmentWhite.x = colorCapabilities.WhiteChromaticity_x;
|
|
pGdiInfo->ciDevice.AlignmentWhite.y = colorCapabilities.WhiteChromaticity_y;
|
|
pGdiInfo->ciDevice.AlignmentWhite.Y = colorCapabilities.WhiteChromaticity_Y;
|
|
|
|
// if we have a color device store the three color gamma values,
|
|
// otherwise store the unique gamma value in all three.
|
|
|
|
if (colorCapabilities.AttributeFlags & VIDEO_DEVICE_COLOR)
|
|
{
|
|
pGdiInfo->ciDevice.RedGamma = colorCapabilities.RedGamma;
|
|
pGdiInfo->ciDevice.GreenGamma = colorCapabilities.GreenGamma;
|
|
pGdiInfo->ciDevice.BlueGamma = colorCapabilities.BlueGamma;
|
|
}
|
|
else
|
|
{
|
|
pGdiInfo->ciDevice.RedGamma = colorCapabilities.WhiteGamma;
|
|
pGdiInfo->ciDevice.GreenGamma = colorCapabilities.WhiteGamma;
|
|
pGdiInfo->ciDevice.BlueGamma = colorCapabilities.WhiteGamma;
|
|
}
|
|
|
|
};
|
|
|
|
pGdiInfo->ciDevice.Cyan.x = 0;
|
|
pGdiInfo->ciDevice.Cyan.y = 0;
|
|
pGdiInfo->ciDevice.Cyan.Y = 0;
|
|
pGdiInfo->ciDevice.Magenta.x = 0;
|
|
pGdiInfo->ciDevice.Magenta.y = 0;
|
|
pGdiInfo->ciDevice.Magenta.Y = 0;
|
|
pGdiInfo->ciDevice.Yellow.x = 0;
|
|
pGdiInfo->ciDevice.Yellow.y = 0;
|
|
pGdiInfo->ciDevice.Yellow.Y = 0;
|
|
|
|
// No dye correction for raster displays.
|
|
|
|
pGdiInfo->ciDevice.MagentaInCyanDye = 0;
|
|
pGdiInfo->ciDevice.YellowInCyanDye = 0;
|
|
pGdiInfo->ciDevice.CyanInMagentaDye = 0;
|
|
pGdiInfo->ciDevice.YellowInMagentaDye = 0;
|
|
pGdiInfo->ciDevice.CyanInYellowDye = 0;
|
|
pGdiInfo->ciDevice.MagentaInYellowDye = 0;
|
|
|
|
pGdiInfo->ulDevicePelsDPI = 0; // For printers only
|
|
pGdiInfo->ulPrimaryOrder = PRIMARY_ORDER_CBA;
|
|
|
|
// BUGBUG this should be modified to take into account the size
|
|
// of the display and the resolution.
|
|
|
|
pGdiInfo->ulHTPatternSize = HT_PATSIZE_4x4_M;
|
|
|
|
pGdiInfo->flHTFlags = HT_FLAG_ADDITIVE_PRIMS;
|
|
|
|
// Fill in the basic devinfo structure
|
|
|
|
*pDevInfo = gDevInfoFrameBuffer;
|
|
|
|
// Fill in the rest of the devinfo and GdiInfo structures.
|
|
|
|
if (ppdev->ulBitCount == 8)
|
|
{
|
|
// It is Palette Managed.
|
|
|
|
pGdiInfo->ulNumColors = 20;
|
|
pGdiInfo->ulNumPalReg = 1 << ppdev->ulBitCount;
|
|
// eVb: 2.7 [DDK CHANGE] - No dithering support
|
|
pDevInfo->flGraphicsCaps |= GCAPS_PALMANAGED;
|
|
// eVb: 2.7 [END]
|
|
pGdiInfo->ulHTOutputFormat = HT_FORMAT_8BPP;
|
|
pDevInfo->iDitherFormat = BMF_8BPP;
|
|
|
|
// Assuming palette is orthogonal - all colors are same size.
|
|
|
|
ppdev->cPaletteShift = 8 - pGdiInfo->ulDACRed;
|
|
}
|
|
else
|
|
{
|
|
pGdiInfo->ulNumColors = (ULONG) (-1);
|
|
pGdiInfo->ulNumPalReg = 0;
|
|
|
|
if (ppdev->ulBitCount == 16)
|
|
{
|
|
pGdiInfo->ulHTOutputFormat = HT_FORMAT_16BPP;
|
|
pDevInfo->iDitherFormat = BMF_16BPP;
|
|
}
|
|
else if (ppdev->ulBitCount == 24)
|
|
{
|
|
pGdiInfo->ulHTOutputFormat = HT_FORMAT_24BPP;
|
|
pDevInfo->iDitherFormat = BMF_24BPP;
|
|
}
|
|
else
|
|
{
|
|
pGdiInfo->ulHTOutputFormat = HT_FORMAT_32BPP;
|
|
pDevInfo->iDitherFormat = BMF_32BPP;
|
|
}
|
|
}
|
|
|
|
EngFreeMem(pVideoBuffer);
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
|
|
/******************************Public*Routine******************************\
|
|
* getAvailableModes
|
|
*
|
|
* Calls the miniport to get the list of modes supported by the kernel driver,
|
|
* and returns the list of modes supported by the diplay driver among those
|
|
*
|
|
* returns the number of entries in the videomode buffer.
|
|
* 0 means no modes are supported by the miniport or that an error occured.
|
|
*
|
|
* NOTE: the buffer must be freed up by the caller.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
DWORD NTAPI getAvailableModes(
|
|
HANDLE hDriver,
|
|
PVIDEO_MODE_INFORMATION *modeInformation,
|
|
DWORD *cbModeSize)
|
|
{
|
|
ULONG ulTemp;
|
|
VIDEO_NUM_MODES modes;
|
|
PVIDEO_MODE_INFORMATION pVideoTemp;
|
|
|
|
//
|
|
// Get the number of modes supported by the mini-port
|
|
//
|
|
|
|
if (EngDeviceIoControl(hDriver,
|
|
IOCTL_VIDEO_QUERY_NUM_AVAIL_MODES,
|
|
NULL,
|
|
0,
|
|
&modes,
|
|
sizeof(VIDEO_NUM_MODES),
|
|
&ulTemp))
|
|
{
|
|
DISPDBG((0, "getAvailableModes failed VIDEO_QUERY_NUM_AVAIL_MODES\n"));
|
|
return(0);
|
|
}
|
|
|
|
*cbModeSize = modes.ModeInformationLength;
|
|
|
|
//
|
|
// Allocate the buffer for the mini-port to write the modes in.
|
|
//
|
|
|
|
*modeInformation = (PVIDEO_MODE_INFORMATION)
|
|
EngAllocMem(0, modes.NumModes *
|
|
modes.ModeInformationLength, ALLOC_TAG);
|
|
|
|
if (*modeInformation == (PVIDEO_MODE_INFORMATION) NULL)
|
|
{
|
|
DISPDBG((0, "getAvailableModes failed EngAllocMem\n"));
|
|
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Ask the mini-port to fill in the available modes.
|
|
//
|
|
|
|
if (EngDeviceIoControl(hDriver,
|
|
IOCTL_VIDEO_QUERY_AVAIL_MODES,
|
|
NULL,
|
|
0,
|
|
*modeInformation,
|
|
modes.NumModes * modes.ModeInformationLength,
|
|
&ulTemp))
|
|
{
|
|
|
|
DISPDBG((0, "getAvailableModes failed VIDEO_QUERY_AVAIL_MODES\n"));
|
|
|
|
EngFreeMem(*modeInformation);
|
|
*modeInformation = (PVIDEO_MODE_INFORMATION) NULL;
|
|
|
|
return(0);
|
|
}
|
|
|
|
//
|
|
// Now see which of these modes are supported by the display driver.
|
|
// As an internal mechanism, set the length to 0 for the modes we
|
|
// DO NOT support.
|
|
//
|
|
|
|
ulTemp = modes.NumModes;
|
|
pVideoTemp = *modeInformation;
|
|
|
|
//
|
|
// Mode is rejected if it is not one plane, or not graphics, or is not
|
|
// one of 8, 16 or 32 bits per pel.
|
|
//
|
|
|
|
while (ulTemp--)
|
|
{
|
|
if ((pVideoTemp->NumberOfPlanes != 1 ) ||
|
|
!(pVideoTemp->AttributeFlags & VIDEO_MODE_GRAPHICS) ||
|
|
// eVb: 2.6 [DDK CHANGE] - Do not process banked video modes
|
|
(pVideoTemp->AttributeFlags & VIDEO_MODE_BANKED) ||
|
|
// eVb: 2.6 [END]
|
|
((pVideoTemp->BitsPerPlane != 8) &&
|
|
(pVideoTemp->BitsPerPlane != 16) &&
|
|
(pVideoTemp->BitsPerPlane != 24) &&
|
|
(pVideoTemp->BitsPerPlane != 32)))
|
|
{
|
|
pVideoTemp->Length = 0;
|
|
}
|
|
|
|
pVideoTemp = (PVIDEO_MODE_INFORMATION)
|
|
(((PUCHAR)pVideoTemp) + modes.ModeInformationLength);
|
|
}
|
|
|
|
return modes.NumModes;
|
|
|
|
}
|