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/******************************Module*Header*******************************\
** ******************** * GDI SAMPLE CODE ** ********************* Module Name: driver.h** Contains prototypes for the display driver.** Copyright (c) 1992-1998 Microsoft Corporation\**************************************************************************/
//////////////////////////////////////////////////////////////////////
// Put all the conditional-compile constants here. There had better
// not be many!
//////////////////////////////////////////////////////////////////////
// Miscellaneous shared stuff
#define DLL_NAME L"s3" // Name of the DLL in UNICODE
#define STANDARD_DEBUG_PREFIX "S3: " // All debug output is prefixed
// by this string
#define ALLOC_TAG ' 3S' // Four byte tag used for tracking
// memory allocations (characters
// are in reverse order)
#define CLIP_LIMIT 50 // We'll be taking 800 bytes of stack space
#define DRIVER_EXTRA_SIZE 0 // Size of the DriverExtra information in the
// DEVMODE structure
#define TMP_BUFFER_SIZE 8192 // Size in bytes of 'pvTmpBuffer'. Has to
// be at least enough to store an entire
// scan line (i.e., 6400 for 1600x1200x32).
#if defined(_ALPHA_)
#define XFER_BUFFERS 16 // Defines the maximum number of write buffers
// possible on any Alpha. Must be a power
#else // of two.
#define XFER_BUFFERS 1 // On non-alpha systems, we don't have to
// worry about the chip caching our bus
#endif // writes.
#define XFER_MASK (XFER_BUFFERS - 1)
typedef struct _CLIPENUM { LONG c; RECTL arcl[CLIP_LIMIT]; // Space for enumerating complex clipping
} CLIPENUM; /* ce, pce */
typedef struct _PDEV PDEV; // Handy forward declaration
VOID vSetClipping(PDEV*, RECTL*);VOID vResetClipping(PDEV*);
//////////////////////////////////////////////////////////////////////
// Text stuff
#define GLYPH_CACHE_HEIGHT 48 // Number of scans to allocate for glyph cache,
// divided by pel size
#define GLYPH_CACHE_CX 64 // Maximal width of glyphs that we'll consider
// caching
#define GLYPH_CACHE_CY 64 // Maximum height of glyphs that we'll consider
// caching
#define MAX_GLYPH_SIZE ((GLYPH_CACHE_CX * GLYPH_CACHE_CY + 31) / 8)
// Maximum amount of off-screen memory required
// to cache a glyph, in bytes
#define GLYPH_ALLOC_SIZE 8100
// Do all cached glyph memory allocations
// in 8k chunks
#define HGLYPH_SENTINEL ((ULONG) -1)
// GDI will never give us a glyph with a
// handle value of 0xffffffff, so we can
// use this as a sentinel for the end of
// our linked lists
#define GLYPH_HASH_SIZE 256
#define GLYPH_HASH_FUNC(x) ((x) & (GLYPH_HASH_SIZE - 1))
typedef struct _CACHEDGLYPH CACHEDGLYPH;typedef struct _CACHEDGLYPH{ CACHEDGLYPH* pcgNext; // Points to next glyph that was assigned
// to the same hash table bucket
HGLYPH hg; // Handles in the bucket-list are kept in
// increasing order
POINTL ptlOrigin; // Origin of glyph bits
// Device specific fields below here:
LONG cxLessOne; // Glyph width less one
LONG cyLessOne; // Glyph height less one
LONG cxcyLessOne;// Packed width and height, less one
LONG cw; // Number of words to be transferred
LONG cd; // Number of dwords to be transferred
ULONG ad[1]; // Start of glyph bits
} CACHEDGLYPH; /* cg, pcg */
typedef struct _GLYPHALLOC GLYPHALLOC;typedef struct _GLYPHALLOC{ GLYPHALLOC* pgaNext; // Points to next glyph structure that
// was allocated for this font
CACHEDGLYPH acg[1]; // This array is a bit misleading, because
// the CACHEDGLYPH structures are actually
// variable sized
} GLYPHAALLOC; /* ga, pga */
typedef struct _CACHEDFONT CACHEDFONT;typedef struct _CACHEDFONT{ CACHEDFONT* pcfNext; // Points to next entry in CACHEDFONT list
CACHEDFONT* pcfPrev; // Points to previous entry in CACHEDFONT list
GLYPHALLOC* pgaChain; // Points to start of allocated memory list
CACHEDGLYPH* pcgNew; // Points to where in the current glyph
// allocation structure a new glyph should
// be placed
LONG cjAlloc; // Bytes remaining in current glyph allocation
// structure
CACHEDGLYPH cgSentinel; // Sentinel entry of the end of our bucket
// lists, with a handle of HGLYPH_SENTINEL
CACHEDGLYPH* apcg[GLYPH_HASH_SIZE]; // Hash table for glyphs
} CACHEDFONT; /* cf, pcf */
typedef struct _XLATECOLORS { // Specifies foreground and background
ULONG iBackColor; // colours for faking a 1bpp XLATEOBJ
ULONG iForeColor;} XLATECOLORS; /* xlc, pxlc */
BOOL bEnableText(PDEV*);VOID vDisableText(PDEV*);VOID vAssertModeText(PDEV*, BOOL);
VOID vFastText(GLYPHPOS*, ULONG, BYTE*, ULONG, ULONG, RECTL*, RECTL*, FLONG, RECTL*, RECTL*);VOID vClearMemDword(ULONG*, ULONG);
//////////////////////////////////////////////////////////////////////
// Brush stuff
// 'Slow' brushes are used when we don't have hardware pattern capability,
// and we have to handle patterns using screen-to-screen blts:
#define SLOW_BRUSH_CACHE_DIM 3 // Controls the number of brushes cached
// in off-screen memory, when we don't
// have the S3 hardware pattern support.
// We allocate 3 x 3 brushes, so we can
// cache a total of 9 brushes:
#define SLOW_BRUSH_COUNT (SLOW_BRUSH_CACHE_DIM * SLOW_BRUSH_CACHE_DIM)
#define SLOW_BRUSH_DIMENSION 64 // After alignment is taken care of,
// every off-screen brush cache entry
// will be 64 pels in both dimensions
#define SLOW_BRUSH_ALLOCATION (SLOW_BRUSH_DIMENSION + 8)
// Actually allocate 72x72 pels for each
// pattern, using the 8 extra for brush
// alignment
// 'Fast' brushes are used when we have hardware pattern capability:
#define FAST_BRUSH_COUNT 16 // Total number of non-hardware brushes
// cached off-screen
#define FAST_BRUSH_DIMENSION 8 // Every off-screen brush cache entry
// is 8 pels in both dimensions
#define FAST_BRUSH_ALLOCATION 16 // We have to align ourselves, so this is
// the dimension of each brush allocation
// Common to both implementations:
#define RBRUSH_2COLOR 1 // For RBRUSH flags
#define TOTAL_BRUSH_COUNT max(FAST_BRUSH_COUNT, SLOW_BRUSH_COUNT)
// This is the maximum number of brushes
// we can possibly have cached off-screen
#define TOTAL_BRUSH_SIZE 64 // We'll only ever handle 8x8 patterns,
// and this is the number of pels
typedef struct _BRUSHENTRY BRUSHENTRY;
// NOTE: Changes to the RBRUSH or BRUSHENTRY structures must be reflected
// in strucs.inc!
typedef struct _RBRUSH { FLONG fl; // Type flags
BOOL bTransparent; // TRUE if brush was realized for a transparent
// blt (meaning colours are white and black),
// FALSE if not (meaning it's already been
// colour-expanded to the correct colours).
// Value is undefined if the brush isn't
// 2 colour.
ULONG ulForeColor; // Foreground colour if 1bpp
ULONG ulBackColor; // Background colour if 1bpp
POINTL ptlBrushOrg; // Brush origin of cached pattern. Initial
// value should be -1
BRUSHENTRY* pbe; // Points to brush-entry that keeps track
// of the cached off-screen brush bits
ULONG aulPattern[1]; // Open-ended array for keeping copy of the
// Don't put anything // actual pattern bits in case the brush
// after here, or // origin changes, or someone else steals
// you'll be sorry! // our brush entry (declared as a ULONG
// for proper dword alignment)
} RBRUSH; /* rb, prb */
typedef struct _BRUSHENTRY { RBRUSH* prbVerify; // We never dereference this pointer to
// find a brush realization; it is only
// ever used in a compare to verify
// that for a given realized brush, our
// off-screen brush entry is still valid.
LONG x; // x-position of cached pattern
LONG y; // y-position of cached pattern
} BRUSHENTRY; /* be, pbe */
typedef union _RBRUSH_COLOR { RBRUSH* prb; ULONG iSolidColor;} RBRUSH_COLOR; /* rbc, prbc */
BOOL bEnableBrushCache(PDEV*);VOID vDisableBrushCache(PDEV*);VOID vAssertModeBrushCache(PDEV*, BOOL);
//////////////////////////////////////////////////////////////////////
// Stretch stuff
typedef struct _STR_BLT { PDEV* ppdev; PBYTE pjSrcScan; LONG lDeltaSrc; LONG XSrcStart; PBYTE pjDstScan; LONG lDeltaDst; LONG XDstStart; LONG XDstEnd; LONG YDstStart; LONG YDstCount; ULONG ulXDstToSrcIntCeil; ULONG ulXDstToSrcFracCeil; ULONG ulYDstToSrcIntCeil; ULONG ulYDstToSrcFracCeil; ULONG ulXFracAccumulator; ULONG ulYFracAccumulator;} STR_BLT;
typedef VOID (*PFN_DIRSTRETCH)(STR_BLT*);
VOID vDirectStretch8Narrow(STR_BLT*);VOID vDirectStretch8(STR_BLT*);VOID vDirectStretch16(STR_BLT*);VOID vDirectStretch32(STR_BLT*);
/////////////////////////////////////////////////////////////////////////
// Heap stuff
typedef struct _DSURF DSURF;
typedef enum { DT_DIB = 0x1, // Surface is really a DIB, not in off-screen
// memory
DT_DIRECTDRAW = 0x2, // Surface is really a DirectDraw surface
} DSURFTYPE; /* dt, pdt */
typedef struct _DSURF{ DSURFTYPE dt; // DSURF status flags
PDEV* ppdev; // Points to our PDEV
LONG x; // x pixel coordinate of left edge of allocation
// if not DT_DIB
LONG y; // y pixel coordinate of right edge of allocation
// if not DT_DIB
LONG cx; // Bitmap width in pixels
LONG cy; // Bitmap height in pixels
union { FLATPTR fpVidMem; // Offset from start of video-memory if not DT_DIB
VOID* pvScan0; // Bits location in system-memory if DT_DIB
}; VIDEOMEMORY* pvmHeap; // DirectDraw heap this was allocated from if
// not DT_DIB and not DT_DIRECTDRAW
DSURF* pdsurfDiscardableNext; // Linked list of discardable surface allocations.
// This list is traversed from the start to
// throw out any allocations
HSURF hsurf; // Handle to associated GDI surface (if any)
// The following are used for DT_DIB only...
ULONG cBlt; // Counts down the number of blts necessary at
// the current uniqueness before we'll consider
// putting the DIB back into off-screen memory
ULONG iUniq; // Tells us whether there have been any heap
// 'free's since the last time we looked at
// this DIB
} DSURF; /* dsurf, pdsurf */
// Number of blts necessary before we'll consider putting a DIB DFB back
// into off-screen memory:
#define HEAP_COUNT_DOWN 6
DSURF* pVidMemAllocate(PDEV*, LONG, LONG);VOID vVidMemFree(DSURF*);BOOL bMoveDibToOffscreenDfbIfRoom(PDEV*, DSURF*);BOOL bMoveOldestOffscreenDfbToDib(PDEV*);
BOOL bEnableOffscreenHeap(PDEV*);VOID vDisableOffscreenHeap(PDEV*);BOOL bAssertModeOffscreenHeap(PDEV*, BOOL);
/////////////////////////////////////////////////////////////////////////
// Bank manager stuff
#define BANK_DATA_SIZE 80 // Number of bytes to allocate for the
// miniport down-loaded bank code working
// space
typedef struct _BANK{ // Private data:
RECTL rclDraw; // Rectangle describing the remaining undrawn
// portion of the drawing operation
RECTL rclSaveBounds; // Saved from original CLIPOBJ for restoration
BYTE iSaveDComplexity; // Saved from original CLIPOBJ for restoration
BYTE fjSaveOptions; // Saved from original CLIPOBJ for restoration
LONG iBank; // Current bank
PDEV* ppdev; // Saved copy
// Public data:
SURFOBJ* pso; // Surface wrapped around the bank. Has to be
// passed as the surface in any banked call-
// back.
CLIPOBJ* pco; // Clip object that is the intersection of the
// original clip object with the bounds of the
// current bank. Has to be passed as the clip
// object in any banked call-back.
} BANK; /* bnk, pbnk */
// Note: BANK_MODE is duplicated in i386\strucs.inc!
typedef enum { BANK_OFF = 0, // We've finished using the memory aperture
BANK_ON, // We're about to use the memory aperture
BANK_ON_NO_WAIT, // We're about to use the memory aperture, and are
// doing our own hardware synchronization
BANK_DISABLE, // We're about to enter full-screen; shut down banking
BANK_ENABLE, // We've exited full-screen; re-enable banking
} BANK_MODE; /* bankm, pbankm */
typedef struct _BANKDATA {
// Common to both old and new bank schemes:
ULONG ulGp_stat_cmd; // Port number of status register
ULONG ulRegisterLock_35; // Default for index 35
// Only applies to new bank schemes:
ULONG ulSystemConfiguration_40; // Default for index 40
ULONG ulExtendedSystemControl2_51; // Default for index 51
ULONG ulExtendedMemoryControl_53; // Default for index 53
ULONG ulLinearAddressWindowControl_58; // Default for index 58
ULONG ulExtendedSystemControl4_6a; // Default for index 6a
ULONG ulEnableMemoryMappedIo; // Bit mask to enable MM IO
} BANKDATA; /* bd, pbd */
typedef VOID (FNBANKMAP)(PDEV*, BANKDATA*, LONG);typedef VOID (FNBANKSELECTMODE)(PDEV*, BANKDATA*, BANK_MODE);typedef VOID (FNBANKINITIALIZE)(PDEV*, BANKDATA*, BOOL);typedef BOOL (FNBANKCOMPUTE)(PDEV*, RECTL*, RECTL*, LONG*, LONG*);
VOID vBankStart(PDEV*, RECTL*, CLIPOBJ*, BANK*);BOOL bBankEnum(BANK*);
FNBANKCOMPUTE bBankComputeNonPower2;FNBANKCOMPUTE bBankComputePower2;
BOOL bEnableBanking(PDEV*);VOID vDisableBanking(PDEV*);VOID vAssertModeBanking(PDEV*, BOOL);
/////////////////////////////////////////////////////////////////////////
// Pointer stuff
#define POINTER_DATA_SIZE 40 // Number of bytes to allocate for the
// miniport down-loaded pointer code
// working space
#define HW_INVISIBLE_OFFSET 2 // Offset from 'ppdev->yPointerBuffer'
// to the invisible pointer
#define HW_POINTER_DIMENSION 64 // Maximum dimension of default
// (built-in) hardware pointer
#define HW_POINTER_HIDE 63 // Hardware pointer start pixel
// position used to hide the pointer
#define HW_POINTER_TOTAL_SIZE 1024 // Total size in bytes required
// to define the hardware pointer
// (must be a power of 2 for
// allocating space for the shape)
typedef VOID (FNSHOWPOINTER)(PDEV*, VOID*, BOOL);typedef VOID (FNMOVEPOINTER)(PDEV*, VOID*, LONG, LONG);typedef BOOL (FNSETPOINTERSHAPE)(PDEV*, VOID*, LONG, LONG, LONG, LONG, LONG, LONG, BYTE*);typedef VOID (FNENABLEPOINTER)(PDEV*, VOID*, BOOL);
BOOL bEnablePointer(PDEV*);VOID vDisablePointer(PDEV*);VOID vAssertModePointer(PDEV*, BOOL);
/////////////////////////////////////////////////////////////////////////
// Palette stuff
BOOL bEnablePalette(PDEV*);VOID vDisablePalette(PDEV*);VOID vAssertModePalette(PDEV*, BOOL);
BOOL bInitializePalette(PDEV*, DEVINFO*);VOID vUninitializePalette(PDEV*);
#define MAX_CLUT_SIZE (sizeof(VIDEO_CLUT) + (sizeof(ULONG) * 256))
/////////////////////////////////////////////////////////////////////////
// DirectDraw stuff
DWORD DdBlt(PDD_BLTDATA);DWORD DdFlip(PDD_FLIPDATA);DWORD DdLock(PDD_LOCKDATA);DWORD DdGetBltStatus(PDD_GETBLTSTATUSDATA);DWORD DdMapMemory(PDD_MAPMEMORYDATA);DWORD DdGetFlipStatus(PDD_GETFLIPSTATUSDATA);DWORD DdWaitForVerticalBlank(PDD_WAITFORVERTICALBLANKDATA);DWORD DdCanCreateSurface(PDD_CANCREATESURFACEDATA);DWORD DdCreateSurface(PDD_CREATESURFACEDATA);DWORD DdSetColorKey(PDD_SETCOLORKEYDATA);DWORD DdUpdateOverlay(PDD_UPDATEOVERLAYDATA);DWORD DdSetOverlayPosition(PDD_SETOVERLAYPOSITIONDATA);DWORD DdGetDriverInfo(PDD_GETDRIVERINFODATA);
// FourCC formats are encoded in reverse because we're little endian:
#define FOURCC_YUY2 '2YUY' // Encoded in reverse because we're little
// There's a 64K granularity that applies to the mapping of the frame
// buffer into the application's address space:
#define ROUND_UP_TO_64K(x) (((ULONG)(x) + 0x10000 - 1) & ~(0x10000 - 1))
typedef struct _FLIPRECORD{ FLATPTR fpFlipFrom; // Surface we last flipped from
LONGLONG liFlipTime; // Time at which last flip
// occured
LONGLONG liFlipDuration; // Precise amount of time it
// takes from vblank to vblank
BOOL bHaveEverCrossedVBlank; // True if we noticed that we
// switched from inactive to
// vblank
BOOL bWasEverInDisplay; // True if we ever noticed that
// we were inactive
BOOL bFlipFlag; // True if we think a flip is
// still pending
} FLIPRECORD;
BOOL bEnableDirectDraw(PDEV*);VOID vDisableDirectDraw(PDEV*);VOID vAssertModeDirectDraw(PDEV*, BOOL);
//////////////////////////////////////////////////////////////////////
// Low-level blt function prototypes
typedef VOID (FNFILL)(PDEV*, LONG, RECTL*, ULONG, RBRUSH_COLOR, POINTL*);typedef VOID (FNXFER)(PDEV*, LONG, RECTL*, ULONG, SURFOBJ*, POINTL*, RECTL*, XLATEOBJ*);typedef VOID (FNCOPY)(PDEV*, LONG, RECTL*, ULONG, POINTL*, RECTL*);typedef VOID (FNFASTPATREALIZE)(PDEV*, RBRUSH*, POINTL*, BOOL);typedef VOID (FNIMAGETRANSFER)(PDEV*, BYTE*, LONG, LONG, LONG, ULONG);typedef BOOL (FNTEXTOUT)(SURFOBJ*, STROBJ*, FONTOBJ*, CLIPOBJ*, RECTL*, BRUSHOBJ*, BRUSHOBJ*);typedef VOID (FNLINETOTRIVIAL)(PDEV*, LONG, LONG, LONG, LONG, ULONG, MIX);typedef VOID (FNLINETOCLIPPED)(PDEV*, LONG, LONG, LONG, LONG, ULONG, MIX, RECTL*);typedef VOID (FNCOPYTRANSPARENT)(PDEV*, LONG, RECTL*, POINTL*, RECTL*, ULONG);
FNFILL vIoFillPatFast;FNFILL vIoFillPatSlow;FNFILL vIoFillSolid;FNXFER vIoXfer1bpp;FNXFER vIoXfer4bpp;FNXFER vIoXferNative;FNXFER vXferNativeSrccopy;FNCOPY vIoCopyBlt;FNFASTPATREALIZE vIoFastPatRealize;FNIMAGETRANSFER vIoImageTransferIo16;FNIMAGETRANSFER vIoImageTransferMm16;FNTEXTOUT bIoTextOut;FNLINETOTRIVIAL vIoLineToTrivial;FNLINETOCLIPPED vIoLineToClipped;FNCOPYTRANSPARENT vIoCopyTransparent;
FNFILL vMmFillPatFast;FNFILL vMmFillPatSlow;FNFILL vMmFillSolid;FNXFER vMmXfer1bpp;FNXFER vMmXfer4bpp;FNXFER vMmXferNative;FNCOPY vMmCopyBlt;FNFASTPATREALIZE vMmFastPatRealize;FNIMAGETRANSFER vMmImageTransferMm16;FNIMAGETRANSFER vMmImageTransferMm32;FNTEXTOUT bMmTextOut;FNLINETOTRIVIAL vMmLineToTrivial;FNLINETOCLIPPED vMmLineToClipped;FNCOPYTRANSPARENT vMmCopyTransparent;
FNTEXTOUT bNwTextOut;FNLINETOTRIVIAL vNwLineToTrivial;FNLINETOCLIPPED vNwLineToClipped;
VOID vPutBits(PDEV*, SURFOBJ*, RECTL*, POINTL*);VOID vGetBits(PDEV*, SURFOBJ*, RECTL*, POINTL*);VOID vIoSlowPatRealize(PDEV*, RBRUSH*, BOOL);
////////////////////////////////////////////////////////////////////////
// Capabilities flags
//
// These are private flags passed to us from the S3 miniport. They
// come from the 'DriverSpecificAttributeFlags' field of the
// 'VIDEO_MODE_INFORMATION' structure (found in 'ntddvdeo.h') passed
// to us via an 'VIDEO_QUERY_AVAIL_MODES' or 'VIDEO_QUERY_CURRENT_MODE'
// IOCTL.
//
// NOTE: These definitions must match those in the S3 miniport's 's3.h'!
typedef enum { CAPS_STREAMS_CAPABLE = 0x00000040, // Has overlay streams processor
CAPS_FORCE_DWORD_REREADS= 0x00000080, // Dword reads occasionally return
// an incorrect result, so always
// retry the reads
CAPS_NEW_MMIO = 0x00000100, // Can use 'new memory-mapped
// I/O' scheme introduced with
// 868/968
CAPS_POLYGON = 0x00000200, // Can do polygons in hardware
CAPS_24BPP = 0x00000400, // Has 24bpp capability
CAPS_BAD_24BPP = 0x00000800, // Has 868/968 early rev chip bugs
// when at 24bpp
CAPS_PACKED_EXPANDS = 0x00001000, // Can do 'new 32-bit transfers'
CAPS_PIXEL_FORMATTER = 0x00002000, // Can do colour space conversions,
// and one-dimensional hardware
// stretches
CAPS_BAD_DWORD_READS = 0x00004000, // Dword or word reads from the
// frame buffer will occasionally
// return an incorrect result,
// so always do byte reads
CAPS_NO_DIRECT_ACCESS = 0x00008000, // Frame buffer can't be directly
// accessed by GDI or DCI --
// because dword or word reads
// would crash system, or Alpha
// is running in sparse space
CAPS_HW_PATTERNS = 0x00010000, // 8x8 hardware pattern support
CAPS_MM_TRANSFER = 0x00020000, // Memory-mapped image transfers
CAPS_MM_IO = 0x00040000, // Memory-mapped I/O
CAPS_MM_32BIT_TRANSFER = 0x00080000, // Can do 32bit bus size transfers
CAPS_16_ENTRY_FIFO = 0x00100000, // At least 16 entries in FIFO
CAPS_SW_POINTER = 0x00200000, // No hardware pointer; use software
// simulation
CAPS_BT485_POINTER = 0x00400000, // Use Brooktree 485 pointer
CAPS_TI025_POINTER = 0x00800000, // Use TI TVP3020/3025 pointer
CAPS_SCALE_POINTER = 0x01000000, // Set if the S3 hardware pointer
// x position has to be scaled by
// two
CAPS_SPARSE_SPACE = 0x02000000, // Frame buffer is mapped in sparse
// space on the Alpha
CAPS_NEW_BANK_CONTROL = 0x04000000, // Set if 801/805/928 style banking
CAPS_NEWER_BANK_CONTROL = 0x08000000, // Set if 864/964 style banking
CAPS_RE_REALIZE_PATTERN = 0x10000000, // Set if we have to work around the
// 864/964 hardware pattern bug
CAPS_SLOW_MONO_EXPANDS = 0x20000000, // Set if we have to slow down
// monochrome expansions
CAPS_MM_GLYPH_EXPAND = 0x40000000, // Use memory-mapped I/O glyph-
// expand method of drawing text
} CAPS;
#define CAPS_DAC_POINTER (CAPS_BT485_POINTER | CAPS_TI025_POINTER)
#define CAPS_LINEAR_FRAMEBUFFER CAPS_NEW_MMIO
// For now, we're linear only
// when using with 'New MM I/O'
// DIRECT_ACCESS(ppdev) returns TRUE if GDI and DCI can directly access
// the frame buffer. It returns FALSE if there are hardware bugs
// when reading words or dwords from the frame buffer that cause non-x86
// systems to crash. It will also return FALSE is the Alpha frame buffer
// is mapped in using 'sparse space'.
#if defined(_X86_)
#define DIRECT_ACCESS(ppdev) 1
#else
#define DIRECT_ACCESS(ppdev) \
(!(ppdev->flCaps & (CAPS_NO_DIRECT_ACCESS | CAPS_SPARSE_SPACE)))#endif
// DENSE(ppdev) returns TRUE if the normal 'dense space' mapping of the
// frame buffer is being used. It returns FALSE only on the Alpha when
// the frame buffer is mapped in using 'sparse space,' meaning that all
// reads and writes to and from the frame buffer must be done through the
// funky 'ioaccess.h' macros.
#if defined(_ALPHA_)
#define DENSE(ppdev) (!(ppdev->flCaps & CAPS_SPARSE_SPACE))
#else
#define DENSE(ppdev) 1
#endif
////////////////////////////////////////////////////////////////////////
// Status flags
typedef enum { STAT_GLYPH_CACHE = 0x0001, // Glyph cache successfully allocated
STAT_BRUSH_CACHE = 0x0002, // Brush cache successfully allocated
STAT_DIRECTDRAW_CAPABLE = 0x0004, // Card is DirectDraw capable
STAT_STREAMS_ENABLED = 0x0010, // Streams processor is enabled
} STATUS;
////////////////////////////////////////////////////////////////////////
// The Physical Device data structure
typedef struct _PDEV{ // -------------------------------------------------------------------
// NOTE: Changes between here and NOTE1 in the PDEV structure must be
// reflected in i386\strucs.inc (assuming you're on an x86, of course)!
LONG xOffset; // Pixel offset from (0, 0) to current
LONG yOffset; // DFB located in off-screen memory
BYTE* pjMmBase; // Start of memory mapped I/O
BYTE* pjScreen; // Points to base screen address
LONG lDelta; // Distance from one scan to the next.
LONG cjPelSize; // 1 if 8bpp, 2 if 16bpp, 3 if 24bpp,
// 4 if 32bpp
ULONG iBitmapFormat; // BMF_8BPP or BMF_16BPP or BMF_32BPP
// (our current colour depth)
// Enhanced mode register addresses.
VOID* ioCur_y; VOID* ioCur_x; VOID* ioDesty_axstp; VOID* ioDestx_diastp; VOID* ioErr_term; VOID* ioMaj_axis_pcnt; VOID* ioGp_stat_cmd; VOID* ioShort_stroke; VOID* ioBkgd_color; VOID* ioFrgd_color; VOID* ioWrt_mask; VOID* ioRd_mask; VOID* ioColor_cmp; VOID* ioBkgd_mix; VOID* ioFrgd_mix; VOID* ioMulti_function; VOID* ioPix_trans;
// Important data for accessing the frame buffer.
VOID* pvBankData; // Points to aulBankData[0]
FNBANKSELECTMODE* pfnBankSelectMode; // Routine to enable or disable
// direct frame buffer access
BANK_MODE bankmOnOverlapped; // BANK_ON or BANK_ON_NO_WAIT,
// depending on whether card
// can handle simulataneous
// frame buffer and accelerator
// access
BOOL bMmIo; // Can do CAPS_MM_IO
// -------------------------------------------------------------------
// NOTE1: Changes up to here in the PDEV structure must be reflected in
// i386\strucs.inc (assuming you're on an x86, of course)!
CAPS flCaps; // Capabilities flags
STATUS flStatus; // Status flags
BOOL bEnabled; // In graphics mode (not full-screen)
HANDLE hDriver; // Handle to \Device\Screen
HDEV hdevEng; // Engine's handle to PDEV
HSURF hsurfScreen; // Engine's handle to screen surface
LONG cxScreen; // Visible screen width
LONG cyScreen; // Visible screen height
LONG cxMemory; // Width of Video RAM
LONG cyHeap; // Height of Video RAM available to
// DirectDraw heap (cyScreen
// <= cyHeap <= cyMemory),
// including primary surface
LONG cxHeap; // Width of Video RAM available to
// DirectDraw heap, including
// primary surface
LONG cyMemory; // Height of Video RAM
LONG cBitsPerPel; // Bits per pel (8, 15, 16, 24 or 32)
ULONG ulMode; // Mode the mini-port driver is in.
FLONG flHooks; // What we're hooking from GDI
UCHAR* pjIoBase; // Mapped IO port base for this PDEV
VOID* pvTmpBuffer; // General purpose temporary buffer,
// TMP_BUFFER_SIZE bytes in size
// (Remember to synchronize if you
// use this for device bitmaps or
// async pointers)
USHORT* apwMmXfer[XFER_BUFFERS];// Pre-computed array of unique
ULONG* apdMmXfer[XFER_BUFFERS];// addresses for doing memory-mapped
// transfers without memory barriers
// Note that the 868/968 chips have a
// hardware bug and can't do byte
// transfers
HSEMAPHORE csCrtc; // Used for synchronizing access to
// the CRTC register
DSURF dsurfScreen; // We stash here our private surface
// structure that represents the
// primary GDI surface
////////// Low-level blt function pointers:
FNFILL* pfnFillSolid; FNFILL* pfnFillPat; FNXFER* pfnXfer1bpp; FNXFER* pfnXfer4bpp; FNXFER* pfnXferNative; FNCOPY* pfnCopyBlt; FNFASTPATREALIZE* pfnFastPatRealize; FNIMAGETRANSFER* pfnImageTransfer; FNTEXTOUT* pfnTextOut; FNLINETOTRIVIAL* pfnLineToTrivial; FNLINETOCLIPPED* pfnLineToClipped; FNCOPYTRANSPARENT* pfnCopyTransparent;
////////// Palette stuff:
PALETTEENTRY* pPal; // The palette if palette managed
HPALETTE hpalDefault; // GDI handle to the default palette.
FLONG flRed; // Red mask for 16/32bpp bitfields
FLONG flGreen; // Green mask for 16/32bpp bitfields
FLONG flBlue; // Blue mask for 16/32bpp bitfields
ULONG cPaletteShift; // number of bits the 8-8-8 palette must
// be shifted by to fit in the hardware
// palette.
////////// Heap stuff:
VIDEOMEMORY* pvmList; // Points to the video-memory heap list
// as supplied by DirectDraw, needed
// for heap allocations
ULONG cHeaps; // Count of video-memory heaps
ULONG iHeapUniq; // Incremented every time room is freed
// in the off-screen heap
SURFOBJ* psoPunt; // Wrapper surface for having GDI draw
// on off-screen bitmaps
SURFOBJ* psoPunt2; // Another one for off-screen to off-
// screen blts
DSURF* pdsurfDiscardableList; // Linked list of discardable bitmaps,
// in order of oldest to newest
////////// Banking stuff:
LONG cjBank; // Size of a bank, in bytes
LONG cPower2ScansPerBank; // Used by 'bBankComputePower2'
LONG cPower2BankSizeInBytes; // Used by 'bBankComputePower2'
CLIPOBJ* pcoBank; // Clip object for banked call backs
SURFOBJ* psoBank; // Surface object for banked call backs
ULONG aulBankData[BANK_DATA_SIZE / 4]; // Private work area for downloaded
// miniport banking code
FNBANKMAP* pfnBankMap; FNBANKCOMPUTE* pfnBankCompute;
////////// Pointer stuff:
BOOL bHwPointerActive; // Currently using the h/w pointer?
LONG xPointerHot; // xHot of current hardware pointer
LONG yPointerHot; // yHot of current hardware pointer
LONG cjPointerOffset; // Byte offset from start of frame
// buffer to off-screen memory where
// we stored the pointer shape
LONG xPointerShape; // x-coordinate
LONG yPointerShape; // y-coordinate
LONG iPointerBank; // Bank containing pointer shape
VOID* pvPointerShape; // Points to pointer shape when bank
// is mapped in
LONG xPointer; // Start x-position for the current
// S3 pointer
LONG yPointer; // Start y-position for the current
// S3 pointer
LONG dxPointer; // Start x-pixel position for the
// current S3 pointer
LONG dyPointer; // Start y-pixel position for the
// current S3 pointer
LONG cPointerShift; // Horizontal scaling factor for
// hardware pointer position
ULONG ulHwGraphicsCursorModeRegister_45; // Default value for index 45
VOID* pvPointerData; // Points to ajPointerData[0]
BYTE ajPointerData[POINTER_DATA_SIZE]; // Private work area for downloaded
// miniport pointer code
FNSHOWPOINTER* pfnShowPointer; FNMOVEPOINTER* pfnMovePointer; FNSETPOINTERSHAPE* pfnSetPointerShape; FNENABLEPOINTER* pfnEnablePointer;
////////// Brush stuff:
LONG iBrushCache; // Index for next brush to be allocated
LONG cBrushCache; // Total number of brushes cached
BRUSHENTRY abe[TOTAL_BRUSH_COUNT]; // Keeps track of brush cache
POINTL ptlReRealize; // Work area for 864/964 pattern
// hardware bug work-around
////////// Text stuff:
SURFOBJ* psoText; // 1bpp surface to which we will have
// GDI draw our glyphs for us
/////////// DirectDraw stuff:
FLIPRECORD flipRecord; // Used to track vertical blank status
ULONG ulRefreshRate; // Refresh rate in Hz
ULONG ulMinOverlayStretch; // Minimum stretch ratio for this mode,
// expressed as a multiple of 1000
ULONG ulFifoValue; // Optimial FIFO value for this mode
ULONG ulExtendedSystemControl3Register_69; // Masked original contents of
// S3 register 0x69, in high byte
ULONG ulMiscState; // Default state of the MULT_MISC
// register
DSURF* pdsurfVideoEngineScratch;// Location of one entire scan line that
// can be used for temporary memory
// by the 868/968 pixel formatter
BYTE jSavedCR2; // Saved contents of register CR2
FLATPTR fpVisibleOverlay; // Frame buffer offset to currently
// visible overlay; will be zero if
// no overlay is visible
DWORD dwOverlayFlipOffset; // Overlay flip offset
DWORD dwVEstep; // 868 video engine step value
DWORD ulColorKey; // color key value to be set when streams
// processor is enabled
} PDEV;
/////////////////////////////////////////////////////////////////////////
// Miscellaneous prototypes:
BOOL bIntersect(RECTL*, RECTL*, RECTL*);LONG cIntersect(RECTL*, RECTL*, LONG);DWORD getAvailableModes(HANDLE, PVIDEO_MODE_INFORMATION*, DWORD*);
BOOL bInitializeModeFields(PDEV*, GDIINFO*, DEVINFO*, DEVMODEW*);BOOL bFastFill(PDEV*, LONG, POINTFIX*, ULONG, ULONG, RBRUSH*, POINTL*, RECTL*);
BOOL bEnableHardware(PDEV*);VOID vDisableHardware(PDEV*);BOOL bAssertModeHardware(PDEV*, BOOL);
extern BYTE gajHwMixFromMix[];extern BYTE gaRop3FromMix[];extern ULONG gaulHwMixFromRop2[];
/////////////////////////////////////////////////////////////////////////
// The x86 C compiler insists on making a divide and modulus operation
// into two DIVs, when it can in fact be done in one. So we use this
// macro.
//
// Note: QUOTIENT_REMAINDER implicitly takes unsigned arguments.
#if defined(_X86_)
#define QUOTIENT_REMAINDER(ulNumerator, ulDenominator, ulQuotient, ulRemainder) \
{ \ __asm mov eax, ulNumerator \ __asm sub edx, edx \ __asm div ulDenominator \ __asm mov ulQuotient, eax \ __asm mov ulRemainder, edx \}
#else
#define QUOTIENT_REMAINDER(ulNumerator, ulDenominator, ulQuotient, ulRemainder) \
{ \ ulQuotient = (ULONG) ulNumerator / (ULONG) ulDenominator; \ ulRemainder = (ULONG) ulNumerator % (ULONG) ulDenominator; \}
#endif
/////////////////////////////////////////////////////////////////////////
// OVERLAP - Returns TRUE if the same-size lower-right exclusive
// rectangles defined by 'pptl' and 'prcl' overlap:
#define OVERLAP(prcl, pptl) \
(((prcl)->right > (pptl)->x) && \ ((prcl)->bottom > (pptl)->y) && \ ((prcl)->left < ((pptl)->x + (prcl)->right - (prcl)->left)) && \ ((prcl)->top < ((pptl)->y + (prcl)->bottom - (prcl)->top)))
/////////////////////////////////////////////////////////////////////////
// SWAP - Swaps the value of two variables, using a temporary variable
#define SWAP(a, b, tmp) { (tmp) = (a); (a) = (b); (b) = (tmp); }
/////////////////////////////////////////////////////////////////////////
// CONVERT_TO_BYTES - Converts to byte count.
#define CONVERT_TO_BYTES(x, pdev) ( (x) * pdev->cjPelSize)
/////////////////////////////////////////////////////////////////////////
// CONVERT_FROM_BYTES - Converts to byte count.
#define CONVERT_FROM_BYTES(x, pdev) ( (x) / pdev->cjPelSize)
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