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1886 lines
66 KiB
1886 lines
66 KiB
/******************************Module*Header*******************************\
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*
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* *******************
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* * GDI SAMPLE CODE *
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* *******************
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*
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* Module Name: enable.c
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*
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* This module contains the functions that enable and disable the
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* driver, the pdev, and the surface.
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*
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* Copyright (c) 1992-1998 Microsoft Corporation
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\**************************************************************************/
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#include "precomp.h"
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// Useful for visualizing the off-screen heap when set to '1':
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#define DEBUG_HEAP 0
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/******************************Public*Structure****************************\
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* GDIINFO ggdiDefault
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*
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* This contains the default GDIINFO fields that are passed back to GDI
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* during DrvEnablePDEV.
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*
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* NOTE: This structure defaults to values for an 8bpp palette device.
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* Some fields are overwritten for different colour depths.
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\**************************************************************************/
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GDIINFO ggdiDefault = {
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GDI_DRIVER_VERSION,
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DT_RASDISPLAY, // ulTechnology
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0, // ulHorzSize (filled in later)
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0, // ulVertSize (filled in later)
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0, // ulHorzRes (filled in later)
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0, // ulVertRes (filled in later)
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0, // cBitsPixel (filled in later)
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0, // cPlanes (filled in later)
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20, // ulNumColors (palette managed)
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0, // flRaster (DDI reserved field)
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0, // ulLogPixelsX (filled in later)
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0, // ulLogPixelsY (filled in later)
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TC_RA_ABLE, // flTextCaps -- If we had wanted console windows
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// to scroll by repainting the entire window,
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// instead of doing a screen-to-screen blt, we
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// would have set TC_SCROLLBLT (yes, the flag is
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// bass-ackwards).
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0, // ulDACRed (filled in later)
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0, // ulDACGreen (filled in later)
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0, // ulDACBlue (filled in later)
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0x0024, // ulAspectX
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0x0024, // ulAspectY
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0x0033, // ulAspectXY (one-to-one aspect ratio)
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1, // xStyleStep
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1, // yStyleSte;
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3, // denStyleStep -- Styles have a one-to-one aspect
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// ratio, and every 'dot' is 3 pixels long
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{ 0, 0 }, // ptlPhysOffset
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{ 0, 0 }, // szlPhysSize
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256, // ulNumPalReg
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// These fields are for halftone initialization. The actual values are
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// a bit magic, but seem to work well on our display.
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{ // ciDevice
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{ 6700, 3300, 0 }, // Red
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{ 2100, 7100, 0 }, // Green
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{ 1400, 800, 0 }, // Blue
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{ 1750, 3950, 0 }, // Cyan
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{ 4050, 2050, 0 }, // Magenta
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{ 4400, 5200, 0 }, // Yellow
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{ 3127, 3290, 0 }, // AlignmentWhite
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20000, // RedGamma
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20000, // GreenGamma
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20000, // BlueGamma
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0, 0, 0, 0, 0, 0 // No dye correction for raster displays
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},
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0, // ulDevicePelsDPI (for printers only)
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PRIMARY_ORDER_CBA, // ulPrimaryOrder
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HT_PATSIZE_4x4_M, // ulHTPatternSize
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HT_FORMAT_8BPP, // ulHTOutputFormat
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HT_FLAG_ADDITIVE_PRIMS, // flHTFlags
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0, // ulVRefresh
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0, // ulPanningHorzRes
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0, // ulPanningVertRes
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0, // ulBltAlignment
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};
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/******************************Public*Structure****************************\
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* DEVINFO gdevinfoDefault
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*
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* This contains the default DEVINFO fields that are passed back to GDI
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* during DrvEnablePDEV.
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*
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* NOTE: This structure defaults to values for an 8bpp palette device.
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* Some fields are overwritten for different colour depths.
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\**************************************************************************/
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#define SYSTM_LOGFONT {16,7,0,0,700,0,0,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,\
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CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,\
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VARIABLE_PITCH | FF_DONTCARE,L"System"}
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#define HELVE_LOGFONT {12,9,0,0,400,0,0,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,\
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CLIP_STROKE_PRECIS,PROOF_QUALITY,\
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VARIABLE_PITCH | FF_DONTCARE,L"MS Sans Serif"}
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#define COURI_LOGFONT {12,9,0,0,400,0,0,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,\
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CLIP_STROKE_PRECIS,PROOF_QUALITY,\
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FIXED_PITCH | FF_DONTCARE, L"Courier"}
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DEVINFO gdevinfoDefault = {
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(GCAPS_OPAQUERECT |
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GCAPS_DITHERONREALIZE |
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GCAPS_PALMANAGED |
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GCAPS_ALTERNATEFILL |
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GCAPS_WINDINGFILL |
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GCAPS_MONO_DITHER |
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GCAPS_COLOR_DITHER |
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GCAPS_DIRECTDRAW |
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GCAPS_ASYNCMOVE), // NOTE: Only enable ASYNCMOVE if your code
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// and hardware can handle DrvMovePointer
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// calls at any time, even while another
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// thread is in the middle of a drawing
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// call such as DrvBitBlt.
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// flGraphicsFlags
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SYSTM_LOGFONT, // lfDefaultFont
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HELVE_LOGFONT, // lfAnsiVarFont
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COURI_LOGFONT, // lfAnsiFixFont
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0, // cFonts
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BMF_8BPP, // iDitherFormat
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8, // cxDither
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8, // cyDither
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0 // hpalDefault (filled in later)
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};
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/******************************Public*Structure****************************\
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* DFVFN gadrvfn[]
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*
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* Build the driver function table gadrvfn with function index/address
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* pairs. This table tells GDI which DDI calls we support, and their
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* location (GDI does an indirect call through this table to call us).
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*
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* Why haven't we implemented DrvSaveScreenBits? To save code.
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*
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* When the driver doesn't hook DrvSaveScreenBits, USER simulates on-
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* the-fly by creating a temporary device-format-bitmap, and explicitly
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* calling DrvCopyBits to save/restore the bits. Since we already hook
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* DrvCreateDeviceBitmap, we'll end up using off-screen memory to store
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* the bits anyway (which would have been the main reason for implementing
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* DrvSaveScreenBits). So we may as well save some working set.
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\**************************************************************************/
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DRVFN gadrvfn[] = {
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{ INDEX_DrvEnablePDEV, (PFN) DrvEnablePDEV },
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{ INDEX_DrvCompletePDEV, (PFN) DrvCompletePDEV },
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{ INDEX_DrvDisablePDEV, (PFN) DrvDisablePDEV },
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{ INDEX_DrvEnableSurface, (PFN) DrvEnableSurface },
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{ INDEX_DrvDisableSurface, (PFN) DrvDisableSurface },
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{ INDEX_DrvAssertMode, (PFN) DrvAssertMode },
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{ INDEX_DrvMovePointer, (PFN) DrvMovePointer },
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{ INDEX_DrvSetPointerShape, (PFN) DrvSetPointerShape },
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{ INDEX_DrvSetPalette, (PFN) DrvSetPalette },
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{ INDEX_DrvCopyBits, (PFN) DrvCopyBits },
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{ INDEX_DrvBitBlt, (PFN) DrvBitBlt },
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{ INDEX_DrvTextOut, (PFN) DrvTextOut },
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{ INDEX_DrvGetModes, (PFN) DrvGetModes },
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{ INDEX_DrvLineTo, (PFN) DrvLineTo },
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{ INDEX_DrvStrokePath, (PFN) DrvStrokePath },
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{ INDEX_DrvFillPath, (PFN) DrvFillPath },
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{ INDEX_DrvRealizeBrush, (PFN) DrvRealizeBrush },
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{ INDEX_DrvCreateDeviceBitmap, (PFN) DrvCreateDeviceBitmap },
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{ INDEX_DrvDeleteDeviceBitmap, (PFN) DrvDeleteDeviceBitmap },
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{ INDEX_DrvStretchBlt, (PFN) DrvStretchBlt },
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{ INDEX_DrvDestroyFont, (PFN) DrvDestroyFont },
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{ INDEX_DrvGetDirectDrawInfo, (PFN) DrvGetDirectDrawInfo },
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{ INDEX_DrvEnableDirectDraw, (PFN) DrvEnableDirectDraw },
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{ INDEX_DrvDisableDirectDraw, (PFN) DrvDisableDirectDraw },
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{ INDEX_DrvSynchronize, (PFN) DrvSynchronize },
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{ INDEX_DrvTransparentBlt, (PFN) DrvTransparentBlt },
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{ INDEX_DrvDeriveSurface, (PFN) DrvDeriveSurface },
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{ INDEX_DrvIcmSetDeviceGammaRamp, (PFN) DrvIcmSetDeviceGammaRamp },
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{ INDEX_DrvDisableDriver, (PFN) DrvDisableDriver }
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};
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ULONG gcdrvfn = sizeof(gadrvfn) / sizeof(DRVFN);
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/******************************Public*Routine******************************\
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* BOOL DrvEnableDriver
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*
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* Enables the driver by retrieving the drivers function table and version.
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*
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\**************************************************************************/
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BOOL DrvEnableDriver(
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ULONG iEngineVersion,
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ULONG cj,
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DRVENABLEDATA* pded)
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{
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// Engine Version is passed down so future drivers can support previous
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// engine versions. A next generation driver can support both the old
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// and new engine conventions if told what version of engine it is
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// working with. For the first version the driver does nothing with it.
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// Fill in as much as we can.
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if (cj >= sizeof(DRVENABLEDATA))
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pded->pdrvfn = gadrvfn;
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if (cj >= (sizeof(ULONG) * 2))
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pded->c = gcdrvfn;
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// DDI version this driver was targeted for is passed back to engine.
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// Future graphic's engine may break calls down to old driver format.
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if (cj >= sizeof(ULONG))
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pded->iDriverVersion = DDI_DRIVER_VERSION_NT4;
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return(TRUE);
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}
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/******************************Public*Routine******************************\
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* VOID DrvDisableDriver
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*
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* Tells the driver it is being disabled. Release any resources allocated in
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* DrvEnableDriver.
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*
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\**************************************************************************/
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VOID DrvDisableDriver(VOID)
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{
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return;
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}
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/******************************Public*Routine******************************\
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* DHPDEV DrvEnablePDEV
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*
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* Initializes a bunch of fields for GDI, based on the mode we've been asked
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* to do. This is the first thing called after DrvEnableDriver, when GDI
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* wants to get some information about us.
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*
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* (This function mostly returns back information; DrvEnableSurface is used
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* for initializing the hardware and driver components.)
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*
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\**************************************************************************/
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DHPDEV DrvEnablePDEV(
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DEVMODEW* pdm, // Contains data pertaining to requested mode
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PWSTR pwszLogAddr, // Logical address
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ULONG cPat, // Count of standard patterns
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HSURF* phsurfPatterns, // Buffer for standard patterns
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ULONG cjCaps, // Size of buffer for device caps 'pdevcaps'
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ULONG* pdevcaps, // Buffer for device caps, also known as 'gdiinfo'
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ULONG cjDevInfo, // Number of bytes in device info 'pdi'
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DEVINFO* pdi, // Device information
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HDEV hdev, // HDEV, used for callbacks
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PWSTR pwszDeviceName, // Device name
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HANDLE hDriver) // Kernel driver handle
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{
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PDEV* ppdev;
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// Future versions of NT had better supply 'devcaps' and 'devinfo'
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// structures that are the same size or larger than the current
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// structures:
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if ((cjCaps < sizeof(GDIINFO)) || (cjDevInfo < sizeof(DEVINFO)))
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{
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DISPDBG((0, "DrvEnablePDEV - Buffer size too small"));
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goto ReturnFailure0;
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}
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// Allocate a physical device structure. Note that we definitely
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// rely on the zero initialization:
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ppdev = EngAllocMem(FL_ZERO_MEMORY, sizeof(PDEV), ALLOC_TAG);
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if (ppdev == NULL)
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{
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DISPDBG((0, "DrvEnablePDEV - Failed EngAllocMem"));
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goto ReturnFailure0;
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}
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ppdev->hDriver = hDriver;
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|
|
// Get the current screen mode information. Set up device caps and
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// devinfo:
|
|
|
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if (!bInitializeModeFields(ppdev, (GDIINFO*) pdevcaps, pdi, pdm))
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{
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DISPDBG((0, "DrvEnablePDEV - Failed bInitializeModeFields"));
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goto ReturnFailure1;
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}
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// Initialize palette information.
|
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|
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if (!bInitializePalette(ppdev, pdi))
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{
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DISPDBG((0, "DrvEnablePDEV - Failed bInitializePalette"));
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goto ReturnFailure1;
|
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}
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return((DHPDEV) ppdev);
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ReturnFailure1:
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DrvDisablePDEV((DHPDEV) ppdev);
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ReturnFailure0:
|
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DISPDBG((0, "Failed DrvEnablePDEV"));
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|
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return(0);
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}
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/******************************Public*Routine******************************\
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* DrvDisablePDEV
|
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*
|
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* Release the resources allocated in DrvEnablePDEV. If a surface has been
|
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* enabled DrvDisableSurface will have already been called.
|
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*
|
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* Note that this function will be called when previewing modes in the
|
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* Display Applet, but not at system shutdown. If you need to reset the
|
|
* hardware at shutdown, you can do it in the miniport by providing a
|
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* 'HwResetHw' entry point in the VIDEO_HW_INITIALIZATION_DATA structure.
|
|
*
|
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* Note: In an error, we may call this before DrvEnablePDEV is done.
|
|
*
|
|
\**************************************************************************/
|
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|
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VOID DrvDisablePDEV(
|
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DHPDEV dhpdev)
|
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{
|
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PDEV* ppdev;
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|
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ppdev = (PDEV*) dhpdev;
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|
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vUninitializePalette(ppdev);
|
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EngFreeMem(ppdev);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID DrvCompletePDEV
|
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*
|
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* Store the HPDEV, the engines handle for this PDEV, in the DHPDEV.
|
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*
|
|
\**************************************************************************/
|
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|
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VOID DrvCompletePDEV(
|
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DHPDEV dhpdev,
|
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HDEV hdev)
|
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{
|
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((PDEV*) dhpdev)->hdevEng = hdev;
|
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}
|
|
|
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/******************************Public*Routine******************************\
|
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* HSURF DrvEnableSurface
|
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*
|
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* Creates the drawing surface, initializes the hardware, and initializes
|
|
* driver components. This function is called after DrvEnablePDEV, and
|
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* performs the final device initialization.
|
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*
|
|
\**************************************************************************/
|
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|
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HSURF DrvEnableSurface(
|
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DHPDEV dhpdev)
|
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{
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PDEV* ppdev;
|
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HSURF hsurf;
|
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SIZEL sizl;
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DSURF* pdsurf;
|
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VOID* pvTmpBuffer;
|
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BYTE* pjScreen;
|
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LONG lDelta;
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FLONG flHooks;
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|
|
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ppdev = (PDEV*) dhpdev;
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|
|
|
/////////////////////////////////////////////////////////////////////
|
|
// First enable all the subcomponents.
|
|
//
|
|
// Note that the order in which these 'Enable' functions are called
|
|
// may be significant in low off-screen memory conditions, because
|
|
// the off-screen heap manager may fail some of the later
|
|
// allocations...
|
|
|
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if (!bEnableHardware(ppdev))
|
|
goto ReturnFailure;
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|
|
|
if (!bEnableBanking(ppdev))
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|
goto ReturnFailure;
|
|
|
|
if (!bEnableOffscreenHeap(ppdev))
|
|
goto ReturnFailure;
|
|
|
|
if (!bEnablePointer(ppdev))
|
|
goto ReturnFailure;
|
|
|
|
if (!bEnableText(ppdev))
|
|
goto ReturnFailure;
|
|
|
|
if (!bEnableBrushCache(ppdev))
|
|
goto ReturnFailure;
|
|
|
|
if (!bEnablePalette(ppdev))
|
|
goto ReturnFailure;
|
|
|
|
if (!bEnableDirectDraw(ppdev))
|
|
goto ReturnFailure;
|
|
|
|
/////////////////////////////////////////////////////////////////////
|
|
// Now create our private surface structure.
|
|
//
|
|
// Whenever we get a call to draw directly to the screen, we'll get
|
|
// passed a pointer to a SURFOBJ whose 'dhpdev' field will point
|
|
// to our PDEV structure, and whose 'dhsurf' field will point to the
|
|
// following DSURF structure.
|
|
//
|
|
// Every device bitmap we create in DrvCreateDeviceBitmap will also
|
|
// have its own unique DSURF structure allocated (but will share the
|
|
// same PDEV). To make our code more polymorphic for handling drawing
|
|
// to either the screen or an off-screen bitmap, we have the same
|
|
// structure for both.
|
|
|
|
pdsurf = &ppdev->dsurfScreen;
|
|
|
|
pdsurf->dt = 0;
|
|
pdsurf->x = 0;
|
|
pdsurf->y = 0;
|
|
pdsurf->fpVidMem = 0;
|
|
pdsurf->ppdev = ppdev;
|
|
|
|
/////////////////////////////////////////////////////////////////////
|
|
// Next, have GDI create the actual surface SURFOBJ structure.
|
|
|
|
sizl.cx = ppdev->cxScreen;
|
|
sizl.cy = ppdev->cyScreen;
|
|
|
|
// Create the primary surface. This defaults to a 'device-managed'
|
|
// surface, but EngModifySurface can change that.
|
|
|
|
hsurf = EngCreateDeviceSurface((DHSURF) pdsurf,
|
|
sizl,
|
|
ppdev->iBitmapFormat);
|
|
if (hsurf == 0)
|
|
{
|
|
DISPDBG((0, "DrvEnableSurface - Failed EngCreateDeviceSurface"));
|
|
goto ReturnFailure;
|
|
}
|
|
|
|
if ((ppdev->flCaps & CAPS_NEW_MMIO) &&
|
|
!(ppdev->flCaps & CAPS_NO_DIRECT_ACCESS))
|
|
{
|
|
// On all cards where we linearly map the frame buffer, create our
|
|
// drawing surface as a GDI-managed surface, meaning that we give
|
|
// GDI a pointer to the framebuffer and GDI can draw on the bits
|
|
// directly. This will allow us good performance with drawing such
|
|
// as GradientFills, even though our hardware can't accelerate the
|
|
// drawing and so we don't hook DrvGradientFill. This way GDI can
|
|
// do write-combined writes directly to the framebuffer and still be
|
|
// very fast.
|
|
//
|
|
// Note that this requires that we hook DrvSynchronize and
|
|
// set HOOK_SYNCHRONIZE.
|
|
|
|
pjScreen = ppdev->pjScreen;
|
|
lDelta = ppdev->lDelta;
|
|
flHooks = ppdev->flHooks | HOOK_SYNCHRONIZE;
|
|
}
|
|
else
|
|
{
|
|
// Ugh, we're running on an ancient S3 card where we can't completely
|
|
// map the entire frame buffer into memory. We have to create the
|
|
// primary surface as a 'GDI-opaque' device-managed surface, and GDI
|
|
// will be forced to go through only Drv calls that we've hooked.
|
|
// (In this case, drawing such as GradientFills will be pathetically
|
|
// slow.)
|
|
|
|
pjScreen = NULL;
|
|
lDelta = 0;
|
|
flHooks = ppdev->flHooks;
|
|
}
|
|
|
|
// Note that this call is new to NT5, and takes the place of
|
|
// EngAssociateSurface.
|
|
|
|
if (!EngModifySurface(hsurf,
|
|
ppdev->hdevEng,
|
|
flHooks,
|
|
MS_NOTSYSTEMMEMORY, // It's in video memory
|
|
(DHSURF) pdsurf,
|
|
pjScreen,
|
|
lDelta,
|
|
NULL))
|
|
{
|
|
DISPDBG((0, "DrvEnableSurface - Failed EngModifySurface"));
|
|
goto ReturnFailure;
|
|
}
|
|
|
|
ppdev->hsurfScreen = hsurf; // Remember it for clean-up
|
|
ppdev->bEnabled = TRUE; // We'll soon be in graphics mode
|
|
|
|
// Create our generic temporary buffer, which may be used by any
|
|
// component.
|
|
|
|
pvTmpBuffer = EngAllocMem(0, TMP_BUFFER_SIZE, ALLOC_TAG);
|
|
if (pvTmpBuffer == NULL)
|
|
{
|
|
DISPDBG((0, "DrvEnableSurface - Failed VirtualAlloc"));
|
|
goto ReturnFailure;
|
|
}
|
|
|
|
ppdev->pvTmpBuffer = pvTmpBuffer;
|
|
|
|
DISPDBG((5, "Passed DrvEnableSurface"));
|
|
|
|
return(hsurf);
|
|
|
|
ReturnFailure:
|
|
DrvDisableSurface((DHPDEV) ppdev);
|
|
|
|
DISPDBG((0, "Failed DrvEnableSurface"));
|
|
|
|
return(0);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID DrvDisableSurface
|
|
*
|
|
* Free resources allocated by DrvEnableSurface. Release the surface.
|
|
*
|
|
* Note that this function will be called when previewing modes in the
|
|
* Display Applet, but not at system shutdown. If you need to reset the
|
|
* hardware at shutdown, you can do it in the miniport by providing a
|
|
* 'HwResetHw' entry point in the VIDEO_HW_INITIALIZATION_DATA structure.
|
|
*
|
|
* Note: In an error case, we may call this before DrvEnableSurface is
|
|
* completely done.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID DrvDisableSurface(
|
|
DHPDEV dhpdev)
|
|
{
|
|
PDEV* ppdev;
|
|
|
|
ppdev = (PDEV*) dhpdev;
|
|
|
|
// Note: In an error case, some of the following relies on the
|
|
// fact that the PDEV is zero-initialized, so fields like
|
|
// 'hsurfScreen' will be zero unless the surface has been
|
|
// sucessfully initialized, and makes the assumption that
|
|
// EngDeleteSurface can take '0' as a parameter.
|
|
|
|
vDisableDirectDraw(ppdev);
|
|
vDisablePalette(ppdev);
|
|
vDisableBrushCache(ppdev);
|
|
vDisableText(ppdev);
|
|
vDisablePointer(ppdev);
|
|
vDisableOffscreenHeap(ppdev);
|
|
vDisableBanking(ppdev);
|
|
vDisableHardware(ppdev);
|
|
|
|
EngFreeMem(ppdev->pvTmpBuffer);
|
|
EngDeleteSurface(ppdev->hsurfScreen);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL DrvGetDirectDrawInfo
|
|
*
|
|
* Will be called after DrvEnablesurface. Will be called twice before
|
|
* DrvEnableDirectDraw is called.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL DrvGetDirectDrawInfo(
|
|
DHPDEV dhpdev,
|
|
DD_HALINFO* pHalInfo,
|
|
DWORD* pdwNumHeaps,
|
|
VIDEOMEMORY* pvmList, // Will be NULL on first call
|
|
DWORD* pdwNumFourCC,
|
|
DWORD* pdwFourCC) // Will be NULL on first call
|
|
{
|
|
PDEV* ppdev;
|
|
LONGLONG li;
|
|
DWORD cProcessors;
|
|
DWORD cHeaps;
|
|
|
|
ppdev = (PDEV*) dhpdev;
|
|
|
|
*pdwNumFourCC = 0;
|
|
*pdwNumHeaps = 0;
|
|
|
|
// We may not support DirectDraw on this card.
|
|
//
|
|
// The 765 (Trio64V+) has a bug such that writing to the frame
|
|
// buffer during an accelerator operation may cause a hang if
|
|
// you do the write soon enough after starting the blt. (There is
|
|
// a small window of opportunity.) On UP machines, the context
|
|
// switch time seems to be enough to avoid the problem. However,
|
|
// on MP machines, we'll have to disable direct draw.
|
|
//
|
|
// NOTE: We can identify the 765 since it is the only chip with
|
|
// the CAPS_STREAMS_CAPABLE flag.
|
|
|
|
if (ppdev->flCaps & CAPS_STREAMS_CAPABLE)
|
|
{
|
|
if (!EngQuerySystemAttribute(EngNumberOfProcessors, &cProcessors) ||
|
|
(cProcessors != 1))
|
|
{
|
|
return(FALSE);
|
|
}
|
|
}
|
|
|
|
if (!(ppdev->flCaps & CAPS_NEW_MMIO) ||
|
|
(ppdev->flCaps & CAPS_NO_DIRECT_ACCESS))
|
|
{
|
|
return(FALSE);
|
|
}
|
|
|
|
pHalInfo->dwSize = sizeof(*pHalInfo);
|
|
|
|
// Current primary surface attributes. Since HalInfo is zero-initialized
|
|
// by GDI, we only have to fill in the fields which should be non-zero:
|
|
|
|
pHalInfo->vmiData.pvPrimary = ppdev->pjScreen;
|
|
pHalInfo->vmiData.dwDisplayWidth = ppdev->cxScreen;
|
|
pHalInfo->vmiData.dwDisplayHeight = ppdev->cyScreen;
|
|
pHalInfo->vmiData.lDisplayPitch = ppdev->lDelta;
|
|
|
|
pHalInfo->vmiData.ddpfDisplay.dwSize = sizeof(DDPIXELFORMAT);
|
|
pHalInfo->vmiData.ddpfDisplay.dwFlags = DDPF_RGB;
|
|
|
|
pHalInfo->vmiData.ddpfDisplay.dwRGBBitCount = 8 * ppdev->cjPelSize;
|
|
|
|
if (ppdev->iBitmapFormat == BMF_8BPP)
|
|
{
|
|
pHalInfo->vmiData.ddpfDisplay.dwFlags |= DDPF_PALETTEINDEXED8;
|
|
}
|
|
|
|
// These masks will be zero at 8bpp:
|
|
|
|
pHalInfo->vmiData.ddpfDisplay.dwRBitMask = ppdev->flRed;
|
|
pHalInfo->vmiData.ddpfDisplay.dwGBitMask = ppdev->flGreen;
|
|
pHalInfo->vmiData.ddpfDisplay.dwBBitMask = ppdev->flBlue;
|
|
|
|
// The S3 has to do everything using 'rectangular' memory, because
|
|
// the accelerator doesn't know how to set arbitrary strides.
|
|
|
|
cHeaps = 0;
|
|
|
|
// Snag a pointer to the video-memory list so that we can use it to
|
|
// call back to DirectDraw to allocate video memory:
|
|
|
|
ppdev->pvmList = pvmList;
|
|
|
|
// Create one heap to describe the unused portion of video
|
|
// memory to the right of the visible screen (if any):
|
|
|
|
if (ppdev->cxScreen < ppdev->cxHeap)
|
|
{
|
|
cHeaps++;
|
|
|
|
if (pvmList != NULL)
|
|
{
|
|
pvmList->dwFlags = VIDMEM_ISRECTANGULAR;
|
|
pvmList->fpStart = ppdev->cxScreen * ppdev->cjPelSize;
|
|
pvmList->dwWidth = (ppdev->cxHeap - ppdev->cxScreen)
|
|
* ppdev->cjPelSize;
|
|
pvmList->dwHeight = ppdev->cyScreen;
|
|
pvmList->ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
|
|
pvmList++;
|
|
}
|
|
}
|
|
|
|
// Create another heap to describe the unused portion of video
|
|
// memory below the visible screen (if any):
|
|
|
|
if (ppdev->cyScreen < ppdev->cyHeap)
|
|
{
|
|
cHeaps++;
|
|
|
|
if (pvmList != NULL)
|
|
{
|
|
pvmList->dwFlags = VIDMEM_ISRECTANGULAR;
|
|
pvmList->fpStart = ppdev->cyScreen * ppdev->lDelta;
|
|
pvmList->dwWidth = ppdev->cxHeap * ppdev->cjPelSize;
|
|
pvmList->dwHeight = ppdev->cyHeap - ppdev->cyScreen;
|
|
pvmList->ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
|
|
pvmList++;
|
|
}
|
|
}
|
|
|
|
// Update the number of heaps:
|
|
|
|
ppdev->cHeaps = cHeaps;
|
|
*pdwNumHeaps = cHeaps;
|
|
|
|
// dword alignment must be guaranteed for off-screen surfaces:
|
|
|
|
pHalInfo->vmiData.dwOffscreenAlign = 4;
|
|
|
|
// Capabilities supported:
|
|
|
|
pHalInfo->ddCaps.dwCaps = DDCAPS_BLT
|
|
| DDCAPS_BLTCOLORFILL
|
|
| DDCAPS_COLORKEY;
|
|
|
|
pHalInfo->ddCaps.dwCKeyCaps = DDCKEYCAPS_SRCBLT;
|
|
|
|
pHalInfo->ddCaps.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN
|
|
| DDSCAPS_PRIMARYSURFACE
|
|
| DDSCAPS_FLIP;
|
|
|
|
// The Trio 64V+ has overlay streams capabilities which are a superset
|
|
// of the above:
|
|
|
|
if (ppdev->flCaps & CAPS_STREAMS_CAPABLE)
|
|
{
|
|
// Overlays need 8-byte alignment. Note that if 24bpp overlays are
|
|
// ever supported, this will have to change to compensate:
|
|
|
|
pHalInfo->vmiData.dwOverlayAlign = 8;
|
|
|
|
pHalInfo->ddCaps.dwCaps |= DDCAPS_OVERLAY
|
|
| DDCAPS_OVERLAYSTRETCH
|
|
| DDCAPS_OVERLAYFOURCC
|
|
| DDCAPS_OVERLAYCANTCLIP;
|
|
|
|
pHalInfo->ddCaps.dwFXCaps |= DDFXCAPS_OVERLAYSTRETCHX
|
|
| DDFXCAPS_OVERLAYSTRETCHY;
|
|
|
|
// We support only destination colour keying because that's the
|
|
// only permutation we've had a chance to test.
|
|
|
|
pHalInfo->ddCaps.dwCKeyCaps |= DDCKEYCAPS_DESTOVERLAY;
|
|
|
|
pHalInfo->ddCaps.ddsCaps.dwCaps |= DDSCAPS_OVERLAY;
|
|
|
|
*pdwNumFourCC = 1;
|
|
if (pdwFourCC)
|
|
{
|
|
pdwFourCC[0] = FOURCC_YUY2;
|
|
}
|
|
|
|
pHalInfo->ddCaps.dwMaxVisibleOverlays = 1;
|
|
|
|
pHalInfo->ddCaps.dwMinOverlayStretch = ppdev->ulMinOverlayStretch;
|
|
pHalInfo->ddCaps.dwMinLiveVideoStretch = ppdev->ulMinOverlayStretch;
|
|
pHalInfo->ddCaps.dwMinHwCodecStretch = ppdev->ulMinOverlayStretch;
|
|
|
|
pHalInfo->ddCaps.dwMaxOverlayStretch = 9999;
|
|
pHalInfo->ddCaps.dwMaxLiveVideoStretch = 9999;
|
|
pHalInfo->ddCaps.dwMaxHwCodecStretch = 9999;
|
|
}
|
|
|
|
// The 868 and 968 have a pixel formatter which is capable of doing
|
|
// colour space conversions and hardware stretching from off-screen
|
|
// surfaces:
|
|
|
|
else if (ppdev->flCaps & CAPS_PIXEL_FORMATTER)
|
|
{
|
|
pHalInfo->ddCaps.dwCaps |= DDCAPS_BLTSTRETCH;
|
|
|
|
pHalInfo->ddCaps.dwFXCaps |= DDFXCAPS_BLTSTRETCHX
|
|
| DDFXCAPS_BLTSTRETCHY;
|
|
|
|
// YUV is supported only above 8bpp:
|
|
|
|
if (ppdev->iBitmapFormat != BMF_8BPP)
|
|
{
|
|
pHalInfo->ddCaps.dwCaps |= DDCAPS_BLTFOURCC;
|
|
|
|
*pdwNumFourCC = 1;
|
|
if (pdwFourCC)
|
|
{
|
|
*pdwFourCC = FOURCC_YUY2;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Tell DirectDraw that we support additional callbacks via
|
|
// DdGetDriverInfo:
|
|
|
|
pHalInfo->GetDriverInfo = DdGetDriverInfo;
|
|
pHalInfo->dwFlags |= DDHALINFO_GETDRIVERINFOSET;
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL DrvEnableDirectDraw
|
|
*
|
|
* This function is called by GDI when a new mode is set, immediately after
|
|
* it calls our DrvEnableSurface and DrvGetDirectDrawInfo.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL DrvEnableDirectDraw(
|
|
DHPDEV dhpdev,
|
|
DD_CALLBACKS* pCallBacks,
|
|
DD_SURFACECALLBACKS* pSurfaceCallBacks,
|
|
DD_PALETTECALLBACKS* pPaletteCallBacks)
|
|
{
|
|
PDEV* ppdev;
|
|
|
|
ppdev = (PDEV*) dhpdev;
|
|
|
|
pCallBacks->WaitForVerticalBlank = DdWaitForVerticalBlank;
|
|
pCallBacks->MapMemory = DdMapMemory;
|
|
pCallBacks->dwFlags = DDHAL_CB32_WAITFORVERTICALBLANK
|
|
| DDHAL_CB32_MAPMEMORY;
|
|
|
|
pSurfaceCallBacks->Blt = DdBlt;
|
|
pSurfaceCallBacks->Flip = DdFlip;
|
|
pSurfaceCallBacks->Lock = DdLock;
|
|
pSurfaceCallBacks->GetBltStatus = DdGetBltStatus;
|
|
pSurfaceCallBacks->GetFlipStatus = DdGetFlipStatus;
|
|
pSurfaceCallBacks->dwFlags = DDHAL_SURFCB32_BLT
|
|
| DDHAL_SURFCB32_FLIP
|
|
| DDHAL_SURFCB32_LOCK
|
|
| DDHAL_SURFCB32_GETBLTSTATUS
|
|
| DDHAL_SURFCB32_GETFLIPSTATUS;
|
|
|
|
// We can do overlays only when the Streams processor is enabled:
|
|
|
|
if (ppdev->flCaps & CAPS_STREAMS_CAPABLE)
|
|
{
|
|
pCallBacks->CreateSurface = DdCreateSurface;
|
|
pCallBacks->CanCreateSurface = DdCanCreateSurface;
|
|
pCallBacks->dwFlags |= DDHAL_CB32_CREATESURFACE
|
|
| DDHAL_CB32_CANCREATESURFACE;
|
|
|
|
pSurfaceCallBacks->SetColorKey = DdSetColorKey;
|
|
pSurfaceCallBacks->UpdateOverlay = DdUpdateOverlay;
|
|
pSurfaceCallBacks->SetOverlayPosition = DdSetOverlayPosition;
|
|
pSurfaceCallBacks->dwFlags |= DDHAL_SURFCB32_SETCOLORKEY
|
|
| DDHAL_SURFCB32_UPDATEOVERLAY
|
|
| DDHAL_SURFCB32_SETOVERLAYPOSITION;
|
|
ppdev->ulColorKey = 0;
|
|
}
|
|
|
|
// We can do blts with funky surface formats only when the pixel
|
|
// formatter is enabled:
|
|
|
|
else if (ppdev->flCaps & CAPS_PIXEL_FORMATTER)
|
|
{
|
|
pCallBacks->CreateSurface = DdCreateSurface;
|
|
pCallBacks->CanCreateSurface = DdCanCreateSurface;
|
|
pCallBacks->dwFlags |= DDHAL_CB32_CREATESURFACE
|
|
| DDHAL_CB32_CANCREATESURFACE;
|
|
}
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID DrvDisableDirectDraw
|
|
*
|
|
* This function is called by GDI when the driver is to be disabled, just
|
|
* before it calls DrvDisableSurface.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID DrvDisableDirectDraw(
|
|
DHPDEV dhpdev)
|
|
{
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID DrvAssertMode
|
|
*
|
|
* This asks the device to reset itself to the mode of the pdev passed in.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL DrvAssertMode(
|
|
DHPDEV dhpdev,
|
|
BOOL bEnable)
|
|
{
|
|
PDEV* ppdev;
|
|
|
|
ppdev = (PDEV*) dhpdev;
|
|
|
|
if (!bEnable)
|
|
{
|
|
//////////////////////////////////////////////////////////////
|
|
// Disable - Switch to full-screen mode
|
|
|
|
vAssertModeDirectDraw(ppdev, FALSE);
|
|
|
|
vAssertModePalette(ppdev, FALSE);
|
|
|
|
vAssertModeBrushCache(ppdev, FALSE);
|
|
|
|
vAssertModeText(ppdev, FALSE);
|
|
|
|
vAssertModePointer(ppdev, FALSE);
|
|
|
|
if (bAssertModeOffscreenHeap(ppdev, FALSE))
|
|
{
|
|
vAssertModeBanking(ppdev, FALSE);
|
|
|
|
if (bAssertModeHardware(ppdev, FALSE))
|
|
{
|
|
ppdev->bEnabled = FALSE;
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////
|
|
// We failed to switch to full-screen. So undo everything:
|
|
|
|
vAssertModeBanking(ppdev, TRUE);
|
|
|
|
bAssertModeOffscreenHeap(ppdev, TRUE); // We don't need to check
|
|
} // return code with TRUE
|
|
|
|
// there is HW setup in bEnablePointer that needs to be done at assert time too
|
|
// coming back from full-screen DOS or hibernate so call enablepointer which
|
|
// then calls vAssertModePointer itself. In 8bpp, the DAC resolution was not
|
|
// being set correctly after FSdos or Hib. causing screen to be dim
|
|
|
|
bEnablePointer(ppdev);
|
|
|
|
vAssertModeText(ppdev, TRUE);
|
|
|
|
vAssertModeBrushCache(ppdev, TRUE);
|
|
|
|
vAssertModePalette(ppdev, TRUE);
|
|
|
|
vAssertModeDirectDraw(ppdev, TRUE);
|
|
}
|
|
else
|
|
{
|
|
//////////////////////////////////////////////////////////////
|
|
// Enable - Switch back to graphics mode
|
|
|
|
// We have to enable every subcomponent in the reverse order
|
|
// in which it was disabled:
|
|
|
|
if (bAssertModeHardware(ppdev, TRUE))
|
|
{
|
|
vAssertModeBanking(ppdev, TRUE);
|
|
|
|
bAssertModeOffscreenHeap(ppdev, TRUE); // We don't need to check
|
|
// return code with TRUE
|
|
bEnablePointer(ppdev);
|
|
|
|
vAssertModeText(ppdev, TRUE);
|
|
|
|
vAssertModeBrushCache(ppdev, TRUE);
|
|
|
|
vAssertModePalette(ppdev, TRUE);
|
|
|
|
vAssertModeDirectDraw(ppdev, TRUE);
|
|
|
|
ppdev->bEnabled = TRUE;
|
|
|
|
return(TRUE);
|
|
}
|
|
}
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* ULONG DrvGetModes
|
|
*
|
|
* Returns the list of available modes for the device.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
ULONG DrvGetModes(
|
|
HANDLE hDriver,
|
|
ULONG cjSize,
|
|
DEVMODEW* pdm)
|
|
{
|
|
DWORD cModes;
|
|
DWORD cbOutputSize;
|
|
PVIDEO_MODE_INFORMATION pVideoModeInformation;
|
|
PVIDEO_MODE_INFORMATION pVideoTemp;
|
|
DWORD cOutputModes = cjSize / (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
|
|
DWORD cbModeSize;
|
|
|
|
cModes = getAvailableModes(hDriver,
|
|
(PVIDEO_MODE_INFORMATION *) &pVideoModeInformation,
|
|
&cbModeSize);
|
|
if (cModes == 0)
|
|
{
|
|
DISPDBG((0, "DrvGetModes failed to get mode information"));
|
|
return(0);
|
|
}
|
|
|
|
if (pdm == NULL)
|
|
{
|
|
cbOutputSize = cModes * (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// Now copy the information for the supported modes back into the
|
|
// output buffer
|
|
//
|
|
|
|
cbOutputSize = 0;
|
|
|
|
pVideoTemp = pVideoModeInformation;
|
|
|
|
do
|
|
{
|
|
if (pVideoTemp->Length != 0)
|
|
{
|
|
if (cOutputModes == 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
//
|
|
// Zero the entire structure to start off with.
|
|
//
|
|
|
|
memset(pdm, 0, sizeof(DEVMODEW));
|
|
|
|
//
|
|
// Set the name of the device to the name of the DLL.
|
|
//
|
|
|
|
memcpy(pdm->dmDeviceName, DLL_NAME, sizeof(DLL_NAME));
|
|
|
|
pdm->dmSpecVersion = DM_SPECVERSION;
|
|
pdm->dmDriverVersion = DM_SPECVERSION;
|
|
pdm->dmSize = sizeof(DEVMODEW);
|
|
pdm->dmDriverExtra = DRIVER_EXTRA_SIZE;
|
|
|
|
pdm->dmBitsPerPel = pVideoTemp->NumberOfPlanes *
|
|
pVideoTemp->BitsPerPlane;
|
|
pdm->dmPelsWidth = pVideoTemp->VisScreenWidth;
|
|
pdm->dmPelsHeight = pVideoTemp->VisScreenHeight;
|
|
pdm->dmDisplayFrequency = pVideoTemp->Frequency;
|
|
pdm->dmDisplayFlags = 0;
|
|
|
|
pdm->dmFields = DM_BITSPERPEL |
|
|
DM_PELSWIDTH |
|
|
DM_PELSHEIGHT |
|
|
DM_DISPLAYFREQUENCY |
|
|
DM_DISPLAYFLAGS ;
|
|
|
|
//
|
|
// Go to the next DEVMODE entry in the buffer.
|
|
//
|
|
|
|
cOutputModes--;
|
|
|
|
pdm = (LPDEVMODEW) ( ((ULONG_PTR)pdm) + sizeof(DEVMODEW) +
|
|
DRIVER_EXTRA_SIZE);
|
|
|
|
cbOutputSize += (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
|
|
|
|
}
|
|
|
|
pVideoTemp = (PVIDEO_MODE_INFORMATION)
|
|
(((PUCHAR)pVideoTemp) + cbModeSize);
|
|
|
|
|
|
} while (--cModes);
|
|
}
|
|
|
|
EngFreeMem(pVideoModeInformation);
|
|
|
|
return(cbOutputSize);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL bAssertModeHardware
|
|
*
|
|
* Sets the appropriate hardware state for graphics mode or full-screen.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL bAssertModeHardware(
|
|
PDEV* ppdev,
|
|
BOOL bEnable)
|
|
{
|
|
BYTE* pjIoBase;
|
|
BYTE* pjMmBase;
|
|
DWORD ReturnedDataLength;
|
|
ULONG ulReturn;
|
|
BYTE jExtendedMemoryControl;
|
|
VIDEO_MODE_INFORMATION VideoModeInfo;
|
|
LONG cjEndOfFrameBuffer;
|
|
LONG cjPointerOffset;
|
|
LONG lDelta;
|
|
ULONG ulMiscState;
|
|
|
|
pjIoBase = ppdev->pjIoBase;
|
|
pjMmBase = ppdev->pjMmBase;
|
|
|
|
if (bEnable)
|
|
{
|
|
// Call the miniport via an IOCTL to set the graphics mode.
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_SET_CURRENT_MODE,
|
|
&ppdev->ulMode, // input buffer
|
|
sizeof(DWORD),
|
|
NULL,
|
|
0,
|
|
&ReturnedDataLength))
|
|
{
|
|
DISPDBG((0, "bAssertModeHardware - Failed VIDEO_SET_CURRENT_MODE"));
|
|
goto ReturnFalse;
|
|
}
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_QUERY_CURRENT_MODE,
|
|
NULL,
|
|
0,
|
|
&VideoModeInfo,
|
|
sizeof(VideoModeInfo),
|
|
&ReturnedDataLength))
|
|
{
|
|
DISPDBG((0, "bAssertModeHardware - failed VIDEO_QUERY_CURRENT_MODE"));
|
|
goto ReturnFalse;
|
|
}
|
|
|
|
#if DEBUG_HEAP
|
|
VideoModeInfo.VideoMemoryBitmapWidth = VideoModeInfo.VisScreenWidth;
|
|
VideoModeInfo.VideoMemoryBitmapHeight = VideoModeInfo.VisScreenHeight;
|
|
#endif
|
|
|
|
// The following variables are determined only after the initial
|
|
// modeset:
|
|
|
|
ppdev->lDelta = VideoModeInfo.ScreenStride;
|
|
ppdev->flCaps = VideoModeInfo.DriverSpecificAttributeFlags;
|
|
ppdev->cxMemory = VideoModeInfo.VideoMemoryBitmapWidth;
|
|
ppdev->cxHeap = VideoModeInfo.VideoMemoryBitmapWidth;
|
|
ppdev->cyMemory = VideoModeInfo.VideoMemoryBitmapHeight;
|
|
ppdev->cyHeap = VideoModeInfo.VideoMemoryBitmapHeight;
|
|
|
|
ppdev->bMmIo = ((ppdev->flCaps & CAPS_MM_IO) > 0);
|
|
|
|
// If we're using the S3 hardware pointer, reserve the last 1k of
|
|
// the frame buffer to store the pointer shape:
|
|
|
|
if (!(ppdev->flCaps & (CAPS_SW_POINTER | CAPS_DAC_POINTER)))
|
|
{
|
|
// Byte offset from start of frame buffer to end:
|
|
|
|
cjEndOfFrameBuffer = ppdev->cyMemory * ppdev->lDelta;
|
|
|
|
// We'll reserve the end of off-screen memory for the hardware
|
|
// pointer shape. Unfortunately, the S3 chips have a bug
|
|
// where the shape has to be stored on a 1K multiple,
|
|
// regardless of what the current screen stride is.
|
|
|
|
cjPointerOffset = (cjEndOfFrameBuffer - HW_POINTER_TOTAL_SIZE)
|
|
& ~(HW_POINTER_TOTAL_SIZE - 1);
|
|
|
|
// Figure out the coordinate where the pointer shape starts:
|
|
|
|
lDelta = ppdev->lDelta;
|
|
|
|
ppdev->cjPointerOffset = cjPointerOffset;
|
|
ppdev->yPointerShape = (cjPointerOffset / lDelta);
|
|
ppdev->xPointerShape =
|
|
CONVERT_FROM_BYTES((cjPointerOffset % lDelta), ppdev);
|
|
|
|
if (ppdev->yPointerShape >= ppdev->cyScreen)
|
|
{
|
|
// There's enough room for the pointer shape at the
|
|
// bottom of off-screen memory; reserve its room by
|
|
// lying about how much off-screen memory there is:
|
|
|
|
ppdev->cyMemory = ppdev->yPointerShape;
|
|
}
|
|
else
|
|
{
|
|
// There's not enough room for the pointer shape in
|
|
// off-screen memory; we'll have to simulate:
|
|
|
|
ppdev->flCaps |= CAPS_SW_POINTER;
|
|
}
|
|
}
|
|
|
|
// Do some parameter checking on the values that the miniport
|
|
// returned to us:
|
|
|
|
ASSERTDD(ppdev->cxMemory >= ppdev->cxScreen, "Invalid cxMemory");
|
|
ASSERTDD(ppdev->cyMemory >= ppdev->cyScreen, "Invalid cyMemory");
|
|
ASSERTDD((ppdev->flCaps &
|
|
(CAPS_NEW_BANK_CONTROL | CAPS_NEWER_BANK_CONTROL)) ||
|
|
((ppdev->cxMemory <= 1024) && (ppdev->cyMemory <= 1024)),
|
|
"Have to have new bank control if more than 1meg memory");
|
|
ASSERTDD((ppdev->flCaps & (CAPS_SW_POINTER | CAPS_DAC_POINTER)) !=
|
|
(CAPS_SW_POINTER | CAPS_DAC_POINTER),
|
|
"Should not set both Software and DAC cursor flags");
|
|
ASSERTDD(!(ppdev->flCaps & CAPS_MM_IO) ||
|
|
(ppdev->flCaps & (CAPS_MM_TRANSFER | CAPS_MM_32BIT_TRANSFER)),
|
|
"Must enable memory-mapped transfer if memory-mapped I/O");
|
|
|
|
// First thing we do is unlock the accelerator registers:
|
|
|
|
ACQUIRE_CRTC_CRITICAL_SECTION(ppdev);
|
|
|
|
OUTPW(pjIoBase, CRTC_INDEX, ((SYSCTL_UNLOCK << 8) | CR39));
|
|
OUTPW(pjIoBase, CRTC_INDEX, ((REG_UNLOCK_1 << 8) | S3R8));
|
|
|
|
// Enable memory-mapped IO. Note that ulMiscState should not be
|
|
// read on non-memory mapped I/O S3's because it does not exist
|
|
// on 911/924's.
|
|
|
|
if (ppdev->flCaps & CAPS_MM_IO)
|
|
{
|
|
OUTP(pjIoBase, CRTC_INDEX, 0x53);
|
|
|
|
jExtendedMemoryControl = INP(pjIoBase, CRTC_DATA);
|
|
|
|
OUTP(pjIoBase, CRTC_DATA, jExtendedMemoryControl | 0x10);
|
|
|
|
// Read the default MULTI_MISC register state.
|
|
|
|
IO_GP_WAIT(ppdev); // Wait so we don't interfere with any
|
|
// pending commands waiting on the
|
|
// FIFO
|
|
IO_READ_SEL(ppdev, 6); // We'll be reading index 0xE
|
|
IO_GP_WAIT(ppdev); // Wait until that's processed
|
|
IO_RD_REG_DT(ppdev, ulMiscState); // Read ulMiscState
|
|
|
|
// Make the colour and mask registers '32-bit'.
|
|
//
|
|
// NOTE: This is what precludes enabling MM I/O on 928 boards.
|
|
|
|
ulMiscState |= 0x0200;
|
|
IO_MULT_MISC(ppdev, ulMiscState);
|
|
|
|
ppdev->ulMiscState = ulMiscState;
|
|
}
|
|
|
|
RELEASE_CRTC_CRITICAL_SECTION(ppdev);
|
|
|
|
// Then set the rest of the default registers:
|
|
|
|
vResetClipping(ppdev);
|
|
|
|
if (ppdev->flCaps & CAPS_MM_IO)
|
|
{
|
|
IO_FIFO_WAIT(ppdev, 1);
|
|
MM_WRT_MASK(ppdev, pjMmBase, -1);
|
|
}
|
|
else
|
|
{
|
|
if (DEPTH32(ppdev))
|
|
{
|
|
IO_FIFO_WAIT(ppdev, 2);
|
|
IO_WRT_MASK32(ppdev, -1);
|
|
}
|
|
else
|
|
{
|
|
IO_FIFO_WAIT(ppdev, 1);
|
|
IO_WRT_MASK(ppdev, -1);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Call the kernel driver to reset the device to a known state.
|
|
// NTVDM will take things from there:
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_RESET_DEVICE,
|
|
NULL,
|
|
0,
|
|
NULL,
|
|
0,
|
|
&ulReturn))
|
|
{
|
|
DISPDBG((0, "bAssertModeHardware - Failed reset IOCTL"));
|
|
goto ReturnFalse;
|
|
}
|
|
}
|
|
|
|
DISPDBG((5, "Passed bAssertModeHardware"));
|
|
|
|
return(TRUE);
|
|
|
|
ReturnFalse:
|
|
|
|
DISPDBG((0, "Failed bAssertModeHardware"));
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL bEnableHardware
|
|
*
|
|
* Puts the hardware in the requested mode and initializes it.
|
|
*
|
|
* Note: Should be called before any access is done to the hardware from
|
|
* the display driver.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL bEnableHardware(
|
|
PDEV* ppdev)
|
|
{
|
|
BYTE* pjIoBase;
|
|
VIDEO_PUBLIC_ACCESS_RANGES VideoAccessRange[2];
|
|
VIDEO_MEMORY VideoMemory;
|
|
VIDEO_MEMORY_INFORMATION VideoMemoryInfo;
|
|
DWORD ReturnedDataLength;
|
|
UCHAR* pj;
|
|
USHORT* pw;
|
|
ULONG* pd;
|
|
ULONG i;
|
|
|
|
// We need a critical section merely because of some S3 weirdness:
|
|
// both the bank control registers and the cursor registers have
|
|
// to be accessed through the shared CRTC registers. We want to
|
|
// set the GCAPS_ASYNCMOVE flag to allow the cursor to move even
|
|
// while we're using the bank registers for a blt -- so we have to
|
|
// synchronize all accesses to the CRTC registers.
|
|
//
|
|
// (Note that in the case of GCAPS_ASYNCMOVE, GDI automatically
|
|
// synchronizes with DrvSetPalette, so you don't have to worry
|
|
// about overlap between asynchronous cursor moves and the palette
|
|
// registers.)
|
|
|
|
ppdev->csCrtc = EngCreateSemaphore();
|
|
if (ppdev->csCrtc == 0)
|
|
{
|
|
DISPDBG((0, "bEnableHardware - Error creating CRTC semaphore"));
|
|
goto ReturnFalse;
|
|
}
|
|
|
|
// Map io ports into virtual memory:
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_QUERY_PUBLIC_ACCESS_RANGES,
|
|
NULL, // input buffer
|
|
0,
|
|
VideoAccessRange, // output buffer
|
|
sizeof(VideoAccessRange),
|
|
&ReturnedDataLength))
|
|
{
|
|
DISPDBG((0, "bEnableHardware - Initialization error mapping IO port base"));
|
|
goto ReturnFalse;
|
|
}
|
|
|
|
ppdev->pjIoBase = (UCHAR*) VideoAccessRange[0].VirtualAddress;
|
|
ppdev->pjMmBase = (BYTE*) VideoAccessRange[1].VirtualAddress;
|
|
|
|
pjIoBase = ppdev->pjIoBase;
|
|
|
|
// Get the linear memory address range.
|
|
|
|
VideoMemory.RequestedVirtualAddress = NULL;
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_MAP_VIDEO_MEMORY,
|
|
&VideoMemory, // input buffer
|
|
sizeof(VIDEO_MEMORY),
|
|
&VideoMemoryInfo, // output buffer
|
|
sizeof(VideoMemoryInfo),
|
|
&ReturnedDataLength))
|
|
{
|
|
DISPDBG((0, "bEnableHardware - Error mapping buffer address"));
|
|
goto ReturnFalse;
|
|
}
|
|
|
|
// Record the Frame Buffer Linear Address.
|
|
|
|
ppdev->pjScreen = (BYTE*) VideoMemoryInfo.FrameBufferBase;
|
|
ppdev->cjBank = VideoMemoryInfo.FrameBufferLength;
|
|
|
|
DISPDBG((1, "pjScreen: %lx pjMmBase: %lx", ppdev->pjScreen, ppdev->pjMmBase));
|
|
|
|
// Set all the register addresses.
|
|
|
|
ppdev->ioCur_y = pjIoBase + CUR_Y;
|
|
ppdev->ioCur_x = pjIoBase + CUR_X;
|
|
ppdev->ioDesty_axstp = pjIoBase + DEST_Y;
|
|
ppdev->ioDestx_diastp = pjIoBase + DEST_X;
|
|
ppdev->ioErr_term = pjIoBase + ERR_TERM;
|
|
ppdev->ioMaj_axis_pcnt = pjIoBase + MAJ_AXIS_PCNT;
|
|
ppdev->ioGp_stat_cmd = pjIoBase + CMD;
|
|
ppdev->ioShort_stroke = pjIoBase + SHORT_STROKE;
|
|
ppdev->ioBkgd_color = pjIoBase + BKGD_COLOR;
|
|
ppdev->ioFrgd_color = pjIoBase + FRGD_COLOR;
|
|
ppdev->ioWrt_mask = pjIoBase + WRT_MASK;
|
|
ppdev->ioRd_mask = pjIoBase + RD_MASK;
|
|
ppdev->ioColor_cmp = pjIoBase + COLOR_CMP;
|
|
ppdev->ioBkgd_mix = pjIoBase + BKGD_MIX;
|
|
ppdev->ioFrgd_mix = pjIoBase + FRGD_MIX;
|
|
ppdev->ioMulti_function = pjIoBase + MULTIFUNC_CNTL;
|
|
ppdev->ioPix_trans = pjIoBase + PIX_TRANS;
|
|
|
|
for (pw = (USHORT*) ppdev->pjMmBase, i = 0; i < XFER_BUFFERS; i++, pw += 2)
|
|
{
|
|
ppdev->apwMmXfer[i] = pw;
|
|
}
|
|
for (pd = (ULONG*) ppdev->pjMmBase, i = 0; i < XFER_BUFFERS; i++, pd++)
|
|
{
|
|
ppdev->apdMmXfer[i] = pd;
|
|
}
|
|
|
|
// Now we can set the mode, unlock the accelerator, and reset the
|
|
// clipping:
|
|
|
|
if (!bAssertModeHardware(ppdev, TRUE))
|
|
goto ReturnFalse;
|
|
|
|
if (ppdev->flCaps & CAPS_MM_IO)
|
|
{
|
|
// Can do memory-mapped IO:
|
|
|
|
ppdev->pfnFillSolid = vMmFillSolid;
|
|
ppdev->pfnFillPat = vMmFillPatFast;
|
|
ppdev->pfnXfer1bpp = vMmXfer1bpp;
|
|
ppdev->pfnXfer4bpp = vMmXfer4bpp;
|
|
ppdev->pfnXferNative = vMmXferNative;
|
|
ppdev->pfnCopyBlt = vMmCopyBlt;
|
|
ppdev->pfnFastPatRealize = vMmFastPatRealize;
|
|
ppdev->pfnTextOut = bMmTextOut;
|
|
ppdev->pfnLineToTrivial = vMmLineToTrivial;
|
|
ppdev->pfnLineToClipped = vMmLineToClipped;
|
|
ppdev->pfnCopyTransparent = vMmCopyTransparent;
|
|
|
|
if (ppdev->flCaps & CAPS_MM_32BIT_TRANSFER)
|
|
ppdev->pfnImageTransfer = vMmImageTransferMm32;
|
|
else
|
|
ppdev->pfnImageTransfer = vMmImageTransferMm16;
|
|
|
|
// On some cards, it may be faster to use the old I/O based
|
|
// glyph routine, which uses the CPU to draw all the glyphs
|
|
// to a monochrome buffer, and then uses the video hardware
|
|
// to colour expand the result:
|
|
|
|
if (!(ppdev->flCaps & CAPS_MM_GLYPH_EXPAND))
|
|
ppdev->pfnTextOut = bIoTextOut;
|
|
|
|
if (ppdev->flCaps & CAPS_NEW_MMIO)
|
|
{
|
|
ppdev->pfnTextOut = bNwTextOut;
|
|
ppdev->pfnLineToTrivial = vNwLineToTrivial;
|
|
ppdev->pfnLineToClipped = vNwLineToClipped;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Have to do IN/OUTs:
|
|
|
|
ppdev->pfnFillSolid = vIoFillSolid;
|
|
ppdev->pfnFillPat = vIoFillPatFast;
|
|
// bEnableBrushCache may override this value
|
|
|
|
ppdev->pfnXfer1bpp = vIoXfer1bpp;
|
|
ppdev->pfnXfer4bpp = vIoXfer4bpp;
|
|
ppdev->pfnXferNative = vIoXferNative;
|
|
ppdev->pfnCopyBlt = vIoCopyBlt;
|
|
ppdev->pfnFastPatRealize = vIoFastPatRealize;
|
|
ppdev->pfnTextOut = bIoTextOut;
|
|
ppdev->pfnLineToTrivial = vIoLineToTrivial;
|
|
ppdev->pfnLineToClipped = vIoLineToClipped;
|
|
ppdev->pfnCopyTransparent = vIoCopyTransparent;
|
|
|
|
if (ppdev->flCaps & CAPS_MM_TRANSFER)
|
|
ppdev->pfnImageTransfer = vIoImageTransferMm16;
|
|
else
|
|
ppdev->pfnImageTransfer = vIoImageTransferIo16;
|
|
}
|
|
|
|
#if DBG
|
|
{
|
|
ACQUIRE_CRTC_CRITICAL_SECTION(ppdev);
|
|
|
|
OUTP(pjIoBase, CRTC_INDEX, 0x30);
|
|
|
|
DISPDBG((0, "Chip: %lx Bank: %lx Width: %li Height: %li Stride: %li Flags: %08lx",
|
|
(ULONG) INP(pjIoBase, CRTC_DATA), ppdev->cjBank, ppdev->cxMemory, ppdev->cyMemory,
|
|
ppdev->lDelta, ppdev->flCaps));
|
|
|
|
RELEASE_CRTC_CRITICAL_SECTION(ppdev);
|
|
}
|
|
#endif
|
|
|
|
DISPDBG((5, "Passed bEnableHardware"));
|
|
|
|
return(TRUE);
|
|
|
|
ReturnFalse:
|
|
|
|
DISPDBG((0, "Failed bEnableHardware"));
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vDisableHardware
|
|
*
|
|
* Undoes anything done in bEnableHardware.
|
|
*
|
|
* Note: In an error case, we may call this before bEnableHardware is
|
|
* completely done.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID vDisableHardware(
|
|
PDEV* ppdev)
|
|
{
|
|
DWORD ReturnedDataLength;
|
|
VIDEO_MEMORY VideoMemory[2];
|
|
|
|
VideoMemory[0].RequestedVirtualAddress = ppdev->pjScreen;
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_UNMAP_VIDEO_MEMORY,
|
|
VideoMemory,
|
|
sizeof(VIDEO_MEMORY),
|
|
NULL,
|
|
0,
|
|
&ReturnedDataLength))
|
|
{
|
|
DISPDBG((0, "vDisableHardware failed IOCTL_VIDEO_UNMAP_VIDEO"));
|
|
}
|
|
|
|
VideoMemory[0].RequestedVirtualAddress = ppdev->pjIoBase;
|
|
VideoMemory[1].RequestedVirtualAddress = ppdev->pjMmBase;
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_FREE_PUBLIC_ACCESS_RANGES,
|
|
VideoMemory,
|
|
sizeof(VideoMemory),
|
|
NULL,
|
|
0,
|
|
&ReturnedDataLength))
|
|
{
|
|
DISPDBG((0, "vDisableHardware failed IOCTL_VIDEO_FREE_PUBLIC_ACCESS"));
|
|
}
|
|
|
|
EngDeleteSemaphore(ppdev->csCrtc);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
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* BOOL bInitializeModeFields
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*
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* Initializes a bunch of fields in the pdev, devcaps (aka gdiinfo), and
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* devinfo based on the requested mode.
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*
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\**************************************************************************/
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BOOL bInitializeModeFields(
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PDEV* ppdev,
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GDIINFO* pgdi,
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DEVINFO* pdi,
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DEVMODEW* pdm)
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{
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ULONG cModes;
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PVIDEO_MODE_INFORMATION pVideoBuffer;
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PVIDEO_MODE_INFORMATION pVideoModeSelected;
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PVIDEO_MODE_INFORMATION pVideoTemp;
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BOOL bSelectDefault;
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VIDEO_MODE_INFORMATION VideoModeInformation;
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ULONG cbModeSize;
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// Call the miniport to get mode information
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cModes = getAvailableModes(ppdev->hDriver, &pVideoBuffer, &cbModeSize);
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if (cModes == 0)
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goto ReturnFalse;
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// Now see if the requested mode has a match in that table.
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pVideoModeSelected = NULL;
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pVideoTemp = pVideoBuffer;
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if ((pdm->dmPelsWidth == 0) &&
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(pdm->dmPelsHeight == 0) &&
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(pdm->dmBitsPerPel == 0) &&
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(pdm->dmDisplayFrequency == 0))
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{
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DISPDBG((1, "Default mode requested"));
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bSelectDefault = TRUE;
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}
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else
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{
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DISPDBG((1, "Requested mode..."));
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DISPDBG((1, " Screen width -- %li", pdm->dmPelsWidth));
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DISPDBG((1, " Screen height -- %li", pdm->dmPelsHeight));
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DISPDBG((1, " Bits per pel -- %li", pdm->dmBitsPerPel));
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DISPDBG((1, " Frequency -- %li", pdm->dmDisplayFrequency));
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bSelectDefault = FALSE;
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}
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while (cModes--)
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{
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if (pVideoTemp->Length != 0)
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{
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DISPDBG((8, " Checking against miniport mode:"));
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DISPDBG((8, " Screen width -- %li", pVideoTemp->VisScreenWidth));
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DISPDBG((8, " Screen height -- %li", pVideoTemp->VisScreenHeight));
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DISPDBG((8, " Bits per pel -- %li", pVideoTemp->BitsPerPlane *
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pVideoTemp->NumberOfPlanes));
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DISPDBG((8, " Frequency -- %li", pVideoTemp->Frequency));
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if (bSelectDefault ||
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((pVideoTemp->VisScreenWidth == pdm->dmPelsWidth) &&
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(pVideoTemp->VisScreenHeight == pdm->dmPelsHeight) &&
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(pVideoTemp->BitsPerPlane *
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pVideoTemp->NumberOfPlanes == pdm->dmBitsPerPel) &&
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(pVideoTemp->Frequency == pdm->dmDisplayFrequency)))
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{
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pVideoModeSelected = pVideoTemp;
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DISPDBG((1, "...Found a mode match!"));
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break;
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}
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}
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pVideoTemp = (PVIDEO_MODE_INFORMATION)
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(((PUCHAR)pVideoTemp) + cbModeSize);
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}
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// If no mode has been found, return an error
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if (pVideoModeSelected == NULL)
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{
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DISPDBG((1, "...Couldn't find a mode match!"));
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EngFreeMem(pVideoBuffer);
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goto ReturnFalse;
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}
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// We have chosen the one we want. Save it in a stack buffer and
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// get rid of allocated memory before we forget to free it.
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VideoModeInformation = *pVideoModeSelected;
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EngFreeMem(pVideoBuffer);
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#if DEBUG_HEAP
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VideoModeInformation.VisScreenWidth = 640;
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VideoModeInformation.VisScreenHeight = 480;
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pdm->dmPelsWidth = 640;
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pdm->dmPelsHeight = 480;
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#endif
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// Set up screen information from the mini-port:
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ppdev->ulMode = VideoModeInformation.ModeIndex;
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ppdev->cxScreen = VideoModeInformation.VisScreenWidth;
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ppdev->cyScreen = VideoModeInformation.VisScreenHeight;
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ppdev->cBitsPerPel = VideoModeInformation.BitsPerPlane;
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DISPDBG((1, "ScreenStride: %lx", VideoModeInformation.ScreenStride));
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// We handle HOOK_SYNCHRONIZE separately at surface creation time:
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ppdev->flHooks = (HOOK_BITBLT |
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HOOK_TEXTOUT |
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HOOK_FILLPATH |
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HOOK_COPYBITS |
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HOOK_STROKEPATH |
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HOOK_LINETO |
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HOOK_STRETCHBLT |
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HOOK_TRANSPARENTBLT);
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// Fill in the GDIINFO data structure with the default 8bpp values:
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*pgdi = ggdiDefault;
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// Now overwrite the defaults with the relevant information returned
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// from the kernel driver:
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pgdi->ulHorzSize = VideoModeInformation.XMillimeter;
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pgdi->ulVertSize = VideoModeInformation.YMillimeter;
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pgdi->ulHorzRes = VideoModeInformation.VisScreenWidth;
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pgdi->ulVertRes = VideoModeInformation.VisScreenHeight;
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pgdi->ulPanningHorzRes = VideoModeInformation.VisScreenWidth;
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pgdi->ulPanningVertRes = VideoModeInformation.VisScreenHeight;
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pgdi->cBitsPixel = VideoModeInformation.BitsPerPlane;
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pgdi->cPlanes = VideoModeInformation.NumberOfPlanes;
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pgdi->ulVRefresh = VideoModeInformation.Frequency;
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pgdi->ulDACRed = VideoModeInformation.NumberRedBits;
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pgdi->ulDACGreen = VideoModeInformation.NumberGreenBits;
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pgdi->ulDACBlue = VideoModeInformation.NumberBlueBits;
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pgdi->ulLogPixelsX = pdm->dmLogPixels;
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pgdi->ulLogPixelsY = pdm->dmLogPixels;
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// Fill in the devinfo structure with the default 8bpp values:
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*pdi = gdevinfoDefault;
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if (VideoModeInformation.BitsPerPlane == 8)
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{
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ppdev->cjPelSize = 1;
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ppdev->iBitmapFormat = BMF_8BPP;
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// Assuming palette is orthogonal - all colors are same size.
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ppdev->cPaletteShift = 8 - pgdi->ulDACRed;
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DISPDBG((3, "palette shift = %d\n", ppdev->cPaletteShift));
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}
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else if ((VideoModeInformation.BitsPerPlane == 16) ||
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(VideoModeInformation.BitsPerPlane == 15))
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{
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ppdev->cjPelSize = 2;
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ppdev->iBitmapFormat = BMF_16BPP;
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ppdev->flRed = VideoModeInformation.RedMask;
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ppdev->flGreen = VideoModeInformation.GreenMask;
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ppdev->flBlue = VideoModeInformation.BlueMask;
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pgdi->ulNumColors = (ULONG) -1;
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pgdi->ulNumPalReg = 0;
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pgdi->ulHTOutputFormat = HT_FORMAT_16BPP;
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pdi->iDitherFormat = BMF_16BPP;
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pdi->flGraphicsCaps &= ~(GCAPS_PALMANAGED | GCAPS_COLOR_DITHER);
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}
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else if (VideoModeInformation.BitsPerPlane == 24)
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{
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ppdev->cjPelSize = 3;
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ppdev->iBitmapFormat = BMF_24BPP;
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ppdev->flRed = VideoModeInformation.RedMask;
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ppdev->flGreen = VideoModeInformation.GreenMask;
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ppdev->flBlue = VideoModeInformation.BlueMask;
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pgdi->ulNumColors = (ULONG) -1;
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pgdi->ulNumPalReg = 0;
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pgdi->ulHTOutputFormat = HT_FORMAT_24BPP;
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pdi->iDitherFormat = BMF_24BPP;
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pdi->flGraphicsCaps &= ~(GCAPS_PALMANAGED | GCAPS_COLOR_DITHER);
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}
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else
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{
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ASSERTDD(VideoModeInformation.BitsPerPlane == 32,
|
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"This driver supports only 8, 16, 24 and 32bpp");
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ppdev->cjPelSize = 4;
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ppdev->iBitmapFormat = BMF_32BPP;
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ppdev->flRed = VideoModeInformation.RedMask;
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ppdev->flGreen = VideoModeInformation.GreenMask;
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ppdev->flBlue = VideoModeInformation.BlueMask;
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pgdi->ulNumColors = (ULONG) -1;
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pgdi->ulNumPalReg = 0;
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pgdi->ulHTOutputFormat = HT_FORMAT_32BPP;
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pdi->iDitherFormat = BMF_32BPP;
|
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pdi->flGraphicsCaps &= ~(GCAPS_PALMANAGED | GCAPS_COLOR_DITHER);
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}
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|
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DISPDBG((5, "Passed bInitializeModeFields"));
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|
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return(TRUE);
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|
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ReturnFalse:
|
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|
|
DISPDBG((0, "Failed bInitializeModeFields"));
|
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|
|
return(FALSE);
|
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}
|
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|
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/******************************Public*Routine******************************\
|
|
* DWORD 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.
|
|
*
|
|
\**************************************************************************/
|
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|
|
DWORD getAvailableModes(
|
|
HANDLE hDriver,
|
|
PVIDEO_MODE_INFORMATION* modeInformation, // Must be freed by caller
|
|
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,
|
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sizeof(VIDEO_NUM_MODES),
|
|
&ulTemp))
|
|
{
|
|
DISPDBG((0, "getAvailableModes - Failed VIDEO_QUERY_NUM_AVAIL_MODES"));
|
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return(0);
|
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}
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|
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*cbModeSize = modes.ModeInformationLength;
|
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|
|
//
|
|
// Allocate the buffer for the mini-port to write the modes in.
|
|
//
|
|
|
|
*modeInformation = EngAllocMem(FL_ZERO_MEMORY,
|
|
modes.NumModes * modes.ModeInformationLength,
|
|
ALLOC_TAG);
|
|
|
|
if (*modeInformation == (PVIDEO_MODE_INFORMATION) NULL)
|
|
{
|
|
DISPDBG((0, "getAvailableModes - Failed EngAllocMem"));
|
|
return 0;
|
|
}
|
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|
|
//
|
|
// 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"));
|
|
|
|
EngFreeMem(*modeInformation);
|
|
*modeInformation = (PVIDEO_MODE_INFORMATION) NULL;
|
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|
|
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, 15, 16, 24 or 32 bits per pel.
|
|
//
|
|
|
|
while (ulTemp--)
|
|
{
|
|
if ((pVideoTemp->NumberOfPlanes != 1 ) ||
|
|
!(pVideoTemp->AttributeFlags & VIDEO_MODE_GRAPHICS) ||
|
|
((pVideoTemp->BitsPerPlane != 8) &&
|
|
(pVideoTemp->BitsPerPlane != 15) &&
|
|
(pVideoTemp->BitsPerPlane != 16) &&
|
|
(pVideoTemp->BitsPerPlane != 24) &&
|
|
(pVideoTemp->BitsPerPlane != 32)))
|
|
{
|
|
DISPDBG((2, "Rejecting miniport mode:"));
|
|
DISPDBG((2, " Screen width -- %li", pVideoTemp->VisScreenWidth));
|
|
DISPDBG((2, " Screen height -- %li", pVideoTemp->VisScreenHeight));
|
|
DISPDBG((2, " Bits per pel -- %li", pVideoTemp->BitsPerPlane *
|
|
pVideoTemp->NumberOfPlanes));
|
|
DISPDBG((2, " Frequency -- %li", pVideoTemp->Frequency));
|
|
|
|
pVideoTemp->Length = 0;
|
|
}
|
|
|
|
pVideoTemp = (PVIDEO_MODE_INFORMATION)
|
|
(((PUCHAR)pVideoTemp) + modes.ModeInformationLength);
|
|
}
|
|
|
|
return(modes.NumModes);
|
|
}
|