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windows-nt/Source/XPSP1/NT/multimedia/opengl/mcd/client/mcd.c

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2020-09-26 03:20:57 -05:00
//******************************Module*Header*******************************
// Module Name: mcd.c
//
// Main module for Mini Client Driver wrapper library.
//
// Copyright (c) 1995 Microsoft Corporation
//**************************************************************************
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <stddef.h>
#include <stdarg.h>
#include <ddrawp.h>
#include <ddrawi.h>
#include <windows.h>
#include <wtypes.h>
#include <windef.h>
#include <wingdi.h>
#include <winddi.h>
#include <glp.h>
#include <glgenwin.h>
#include <mcdrv.h>
#include <mcd2hack.h>
#include <mcd.h>
#include <mcdint.h>
#ifdef MCD95
#include "mcdrvint.h"
#endif
#include "debug.h"
ULONG verMajor, verMinor;
// Checks MCD version to see if the driver can accept direct buffer
// access. Direct access was introduced in 1.1.
#define SUPPORTS_DIRECT() \
(verMinor >= 0x10 || verMajor > 1)
// Checks for version 2.0 or higher
#define SUPPORTS_20() \
(verMajor >= 2)
extern ULONG McdFlags;
extern ULONG McdPrivateFlags;
#if DBG
extern ULONG McdDebugFlags;
#endif
#ifdef MCD95
MCDRVINITFUNC pMCDrvInit = (MCDRVINITFUNC) NULL;
MCDENGESCFILTERFUNC pMCDEngEscFilter = (MCDENGESCFILTERFUNC) NULL;
MCDENGESCPREPFUNC pMCDEngEscPrep = (MCDENGESCPREPFUNC) NULL;
DHPDEV gdhpdev = (DHPDEV) NULL;
#define EXTESCAPE Mcd95EscapeBypass
#else
#define EXTESCAPE ExtEscape
#endif
#ifdef MCD95
//
// Local driver semaphore.
//
extern CRITICAL_SECTION gsemMcd;
/******************************Public*Routine******************************\
* Mcd95EscapeBypass
*
* Escape function for MCD95.
*
* Call via the function pointer retrieved via LoadLibrary/GetProcAddress.
* Synchronize to the global
*
* History:
* 09-Feb-1997 -by- Gilman Wong [gilmanw]
* Wrote it.
\**************************************************************************/
LONG WINAPI Mcd95EscapeBypass(HDC hdc, int iEscape,
int cjIn, PVOID pvIn,
int cjOut, PVOID pvOut)
{
LONG lRet = 0;
if ((iEscape == RXFUNCS) && pMCDEngEscPrep && pMCDEngEscFilter)
{
MCDHDR McdHdr;
SURFOBJ bogusSurf;
bogusSurf.dhpdev = gdhpdev;
EnterCriticalSection(&gsemMcd);
//
// Prep the MCDHDR buffer. Required before invoking
// MCDEngEscFilter.
//
if ((*pMCDEngEscPrep)(sizeof(McdHdr), &McdHdr, cjIn, pvIn))
{
//
// Pass to dispatch function.
//
(*pMCDEngEscFilter)(&bogusSurf, iEscape,
sizeof(McdHdr), &McdHdr,
cjOut, pvOut, (ULONG_PTR *) &lRet);
}
else
{
DBGPRINT("Mcd95EscapeBypass: MCDEngEscPrep failed\n");
}
LeaveCriticalSection(&gsemMcd);
}
return lRet;
}
/******************************Public*Routine******************************\
* Mcd95DriverInit
*
* Initialize the MCD driver.
*
* History:
* 14-Apr-1997 -by- Gilman Wong [gilmanw]
* Wrote it.
\**************************************************************************/
typedef enum {
MCDRV_NEEDINIT,
MCDRV_INITFAIL,
MCDRV_INITOK
} MCDRVSTATE;
BOOL Mcd95DriverInit(HDC hdc)
{
HMODULE hmodMCD;
MCDGETDRIVERNAME mcdDriverNames;
MCDCMDI mcdCmd;
static MCDRVSTATE McdInitState = MCDRV_NEEDINIT;
EnterCriticalSection(&gsemMcd);
if (McdInitState == MCDRV_NEEDINIT)
{
//
// One shot at init. Assume failure for now.
//
McdInitState = MCDRV_INITFAIL;
//
// Call Escape to determine name of MCD driver DLL and the
// name of its Init entry point.
//
mcdCmd.command = MCDCMD_GETDRIVERNAME;
mcdDriverNames.ulVersion = 1;
if ((EXTESCAPE(hdc, RXFUNCS, sizeof(mcdCmd), (char *) &mcdCmd,
sizeof(mcdDriverNames),
(char *) &mcdDriverNames) <= 0) ||
(!mcdDriverNames.pchDriverName) ||
(!mcdDriverNames.pchFuncName))
{
DBGPRINT("MCDGetDriverInfo: MCDCMD_GETDRIVERNAME failed\n");
goto Mcd95DriverInit_exit;
}
//
// Load the MCD driver DLL and get entry points.
//
if (hmodMCD = LoadLibraryA(mcdDriverNames.pchDriverName))
{
HMODULE hmodMCDSRV;
//
// Get MCDrvInit entry point first.
//
pMCDrvInit = (MCDRVINITFUNC)
GetProcAddress(hmodMCD, mcdDriverNames.pchFuncName);
if (pMCDrvInit)
{
//
// Call MCDrvInit to get MCDSRV32.DLL module handle.
//
hmodMCDSRV = (*pMCDrvInit)(hdc, &gdhpdev);
if (hmodMCDSRV)
{
//
// Get the MCDEngEscPrep and MCDEngEscFilter entry
// points.
//
pMCDEngEscPrep = (MCDENGESCPREPFUNC)
GetProcAddress(hmodMCDSRV, MCDENGESCPREPNAME);
pMCDEngEscFilter = (MCDENGESCFILTERFUNC)
GetProcAddress(hmodMCDSRV, MCDENGESCFILTERNAME);
if (pMCDEngEscPrep && pMCDEngEscFilter)
{
McdInitState = MCDRV_INITOK;
}
else
{
pMCDEngEscPrep = (MCDENGESCPREPFUNC) NULL;
pMCDEngEscFilter = (MCDENGESCFILTERFUNC) NULL;
DBGPRINT("Mcd95DriverInit: GetProcAddress failed\n");
}
}
}
else
{
DBGPRINT1("MCDGetDriverInfo: GetProcAddress(%s) failed\n",
mcdDriverNames.pchFuncName);
}
}
else
{
DBGPRINT1("MCDGetDriverInfo: LoadLibrary(%s) failed\n",
mcdDriverNames.pchDriverName);
}
}
Mcd95DriverInit_exit:
LeaveCriticalSection(&gsemMcd);
return (McdInitState == MCDRV_INITOK);
}
#endif
//*****************************Private*Routine******************************
//
// InitMcdEsc
//
// Initializes an MCDESC_HEADER for filling in
//
//**************************************************************************
// Placeholder in case any generic initialization becomes necessary
#define InitMcdEsc(pmeh) (pmeh)
//*****************************Private*Routine******************************
//
// InitMcdEscEmpty
//
// Initializes an MCDESC_HEADER for filling in
//
//**************************************************************************
#define InitMcdEscEmpty(pmeh) \
(InitMcdEsc(pmeh), \
(pmeh)->hRC = NULL, \
(pmeh)->hSharedMem = NULL, \
(pmeh)->pSharedMem = NULL, \
(pmeh)->dwWindow = 0, \
(pmeh))
//*****************************Private*Routine******************************
//
// InitMcdEscContext
//
// Initializes an MCDESC_HEADER for filling in
//
//**************************************************************************
#define InitMcdEscContext(pmeh, pmctx) \
(InitMcdEsc(pmeh), \
(pmeh)->hRC = (pmctx)->hMCDContext, \
(pmeh)->dwWindow = (pmctx)->dwMcdWindow, \
(pmeh))
//*****************************Private*Routine******************************
//
// InitMcdEscSurfaces
//
// Fills in some MCDESC_HEADER fields from context information
//
//**************************************************************************
#if DBG
extern ULONG APIENTRY glDebugEntry(int param, void *data);
#endif
MCDESC_HEADER *InitMcdEscSurfaces(MCDESC_HEADER *pmeh, MCDCONTEXT *pmctx)
{
GENMCDSTATE *pmst;
InitMcdEscContext(pmeh, pmctx);
// We're assuming that the context passed in is always the one
// statically placed in the GENMCDSTATE. Attempt to verify this
// by checking that the allocation size for the context is
// the same as for a GENMCDSTATE.
ASSERTOPENGL(glDebugEntry(3, pmctx) == sizeof(GENMCDSTATE),
"InitMcdEscSurfaces: Bad context\n");
pmst = (GENMCDSTATE *)pmctx;
pmeh->msrfColor.hSurf = pmst->hDdColor;
pmeh->msrfDepth.hSurf = pmst->hDdDepth;
return pmeh;
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDGetDriverInfo(HDC hdc, MCDDRIVERINFOI *pMCDDriverInfo)
//
// Checks to determine if the device driver reports MCD capabilities.
//
//**************************************************************************
BOOL APIENTRY MCDGetDriverInfo(HDC hdc, MCDDRIVERINFOI *pMCDDriverInfo)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDDRIVERINFOCMDI)];
MCDESC_HEADER *pmeh;
MCDDRIVERINFOCMDI *pInfoCmd;
if ( !(McdPrivateFlags & MCDPRIVATE_MCD_ENABLED) )
{
return FALSE;
}
#ifdef MCD95
if (!Mcd95DriverInit(hdc))
{
return FALSE;
}
#endif
pmeh = InitMcdEscEmpty((MCDESC_HEADER *)(cmdBuffer));
pmeh->flags = 0;
pInfoCmd = (MCDDRIVERINFOCMDI *)(pmeh + 1);
pInfoCmd->command = MCD_DRIVERINFO;
// Force the table to empty
memset(&pMCDDriverInfo->mcdDriver, 0, sizeof(MCDDRIVER));
// Force the version to 0
pMCDDriverInfo->mcdDriverInfo.verMajor = 0;
if (!(BOOL)EXTESCAPE(hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, sizeof(MCDDRIVERINFOI),
(char *)pMCDDriverInfo))
return FALSE;
// See if the driver filled in a non-null version:
if (pMCDDriverInfo->mcdDriverInfo.verMajor != 0)
{
verMajor = pMCDDriverInfo->mcdDriverInfo.verMajor;
verMinor = pMCDDriverInfo->mcdDriverInfo.verMinor;
return TRUE;
}
else
{
return FALSE;
}
}
//******************************Public*Routine******************************
//
// LONG APIENTRY MCDDescribeMcdPixelFormat(HDC hdc,
// LONG iPixelFormat,
// MCDPIXELFORMAT *ppfd)
//
// Returns information about the specified hardware-dependent pixel format.
//
//**************************************************************************
LONG APIENTRY MCDDescribeMcdPixelFormat(HDC hdc, LONG iPixelFormat,
MCDPIXELFORMAT *pMcdPixelFmt)
{
LONG lRet = 0;
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDPIXELFORMATCMDI)];
MCDESC_HEADER *pmeh;
MCDPIXELFORMATCMDI *pPixelFmtCmd;
if ( !(McdPrivateFlags & MCDPRIVATE_PALETTEFORMATS) &&
((GetDeviceCaps(hdc, BITSPIXEL) * GetDeviceCaps(hdc, PLANES)) == 8) &&
(GetDeviceCaps(hdc, RASTERCAPS) & RC_PALETTE) )
{
return lRet;
}
pmeh = InitMcdEscEmpty((MCDESC_HEADER *)(cmdBuffer));
pmeh->flags = 0;
pPixelFmtCmd = (MCDPIXELFORMATCMDI *)(pmeh + 1);
pPixelFmtCmd->command = MCD_DESCRIBEPIXELFORMAT;
pPixelFmtCmd->iPixelFormat = iPixelFormat;
lRet = (LONG)EXTESCAPE(hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, sizeof(MCDPIXELFORMAT),
(char *)pMcdPixelFmt);
// Limit overlay/underlay planes to 15 each (as per spec).
if (pMcdPixelFmt)
{
if (pMcdPixelFmt->cOverlayPlanes > 15)
pMcdPixelFmt->cOverlayPlanes = 15;
if (pMcdPixelFmt->cUnderlayPlanes > 15)
pMcdPixelFmt->cUnderlayPlanes = 15;
}
return lRet;
}
//******************************Public*Routine******************************
//
// LONG APIENTRY MCDDescribePixelFormat(HDC hdc,
// LONG iPixelFormat,
// LPPIXELFORMATDESCRIPTOR ppfd)
//
// Returns a PIXELFORMATDESCRIPTOR describing the specified hardware-dependent
// pixel format.
//
//**************************************************************************
#define STANDARD_MCD_FLAGS \
(PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_GENERIC_FORMAT | \
PFD_GENERIC_ACCELERATED)
LONG APIENTRY MCDDescribePixelFormat(HDC hdc, LONG iPixelFormat,
LPPIXELFORMATDESCRIPTOR ppfd)
{
LONG lRet = 0;
MCDPIXELFORMAT mcdPixelFmt;
lRet = MCDDescribeMcdPixelFormat(hdc, iPixelFormat,
ppfd ? &mcdPixelFmt : NULL);
if (ppfd && lRet)
{
ppfd->nSize = sizeof(*ppfd);
ppfd->nVersion = 1;
ppfd->dwFlags = mcdPixelFmt.dwFlags | STANDARD_MCD_FLAGS |
((mcdPixelFmt.dwFlags & PFD_DOUBLEBUFFER) ?
0 : PFD_SUPPORT_GDI);
if (McdPrivateFlags & MCDPRIVATE_EMULATEICD)
ppfd->dwFlags &= ~PFD_GENERIC_FORMAT;
memcpy(&ppfd->iPixelType, &mcdPixelFmt.iPixelType,
offsetof(MCDPIXELFORMAT, cDepthBits) -
offsetof(MCDPIXELFORMAT, iPixelType));
ppfd->cDepthBits = mcdPixelFmt.cDepthBits;
if (ppfd->iPixelType == PFD_TYPE_RGBA)
{
if (ppfd->cColorBits < 8)
{
ppfd->cAccumBits = 16;
ppfd->cAccumRedBits = 5;
ppfd->cAccumGreenBits = 6;
ppfd->cAccumBlueBits = 5;
ppfd->cAccumAlphaBits = 0;
}
else
{
if (ppfd->cColorBits <= 16)
{
ppfd->cAccumBits = 32;
ppfd->cAccumRedBits = 11;
ppfd->cAccumGreenBits = 11;
ppfd->cAccumBlueBits = 10;
ppfd->cAccumAlphaBits = 0;
}
else
{
ppfd->cAccumBits = 64;
ppfd->cAccumRedBits = 16;
ppfd->cAccumGreenBits = 16;
ppfd->cAccumBlueBits = 16;
ppfd->cAccumAlphaBits = 0;
}
}
}
else
{
ppfd->cAccumBits = 0;
ppfd->cAccumRedBits = 0;
ppfd->cAccumGreenBits = 0;
ppfd->cAccumBlueBits = 0;
ppfd->cAccumAlphaBits = 0;
}
if (mcdPixelFmt.cStencilBits)
{
ppfd->cStencilBits = mcdPixelFmt.cStencilBits;
}
else
{
if (McdPrivateFlags & MCDPRIVATE_USEGENERICSTENCIL)
ppfd->cStencilBits = 8;
else
ppfd->cStencilBits = 0;
}
ppfd->cAuxBuffers = 0;
ppfd->iLayerType = PFD_MAIN_PLANE;
ppfd->bReserved = (BYTE) (mcdPixelFmt.cOverlayPlanes |
(mcdPixelFmt.cUnderlayPlanes << 4));
ppfd->dwLayerMask = 0;
ppfd->dwVisibleMask = mcdPixelFmt.dwTransparentColor;
ppfd->dwDamageMask = 0;
}
return lRet;
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDCreateContext(MCDCONTEXT *pMCDContext,
// MCDRCINFO *pRcInfo,
// GLSURF *pgsurf,
// ULONG flags)
//
// Creates an MCD rendering context for the specified hdc/hwnd according
// to the specified flags.
//
//**************************************************************************
BOOL APIENTRY MCDCreateContext(MCDCONTEXT *pMCDContext,
MCDRCINFOPRIV *pRcInfo,
GLSURF *pgsurf,
int ipfd,
ULONG flags)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDCREATECONTEXT)];
MCDESC_HEADER *pmeh;
MCDCREATECONTEXT *pmcc;
if (flags & MCDSURFACE_HWND)
{
// We don't have surfaces to pass in this case
pmeh = InitMcdEscContext((MCDESC_HEADER *)cmdBuffer, pMCDContext);
pmeh->flags = MCDESC_FL_CREATE_CONTEXT;
}
else if (SUPPORTS_DIRECT())
{
pmeh = InitMcdEscSurfaces((MCDESC_HEADER *)cmdBuffer, pMCDContext);
pmeh->flags = MCDESC_FL_CREATE_CONTEXT | MCDESC_FL_SURFACES;
}
else
{
return FALSE;
}
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmcc = (MCDCREATECONTEXT *)(pmeh + 1);
if (flags & MCDSURFACE_HWND)
{
pmcc->escCreate.hwnd = pgsurf->hwnd;
}
else
{
pmcc->escCreate.hwnd = NULL;
}
pmcc->escCreate.flags = flags;
pmcc->ipfd = ipfd;
pmcc->iLayer = pgsurf->iLayer;
pmcc->mcdFlags = McdFlags;
pmcc->pRcInfo = pRcInfo;
pMCDContext->hMCDContext =
(MCDHANDLE)IntToPtr( EXTESCAPE(pgsurf->hdc, MCDFUNCS,
sizeof(MCDESC_HEADER) + sizeof(MCDCREATECONTEXT),
(char *)cmdBuffer, sizeof(MCDRCINFOPRIV),
(char *)pRcInfo) );
pMCDContext->hdc = pgsurf->hdc;
pMCDContext->dwMcdWindow = pRcInfo->dwMcdWindow;
return (pMCDContext->hMCDContext != (HANDLE)NULL);
}
#define MCD_MEM_ALIGN 32
//******************************Public*Routine******************************
//
// UCHAR * APIENTRY MCDAlloc(MCDCONTEXT *pMCDContext,
// ULONG numBytes,
// MCDHANDLE *pMCDHandle,
// ULONG flags);
//
// Allocate a chunk of shared memory to use for vertex and pixel data.
//
// The return value is a pointer to a shared memory region which can be
// subsequently used by the caller. For vertex processing, caller should
// use MCDLockMemory()/MCDUnlockMemory to serialize hardware access to the
// memory.
//
//**************************************************************************
UCHAR * APIENTRY MCDAlloc(MCDCONTEXT *pMCDContext, ULONG numBytes,
HANDLE *pMCDHandle, ULONG flags)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDALLOCCMDI)];
ULONG outBuffer;
ULONG totalSize = numBytes + MCD_MEM_ALIGN + sizeof(MCDMEMHDRI);
MCDALLOCCMDI *pCmdAlloc;
MCDESC_HEADER *pmeh;
VOID *pResult;
MCDMEMHDRI *pMCDMemHdr;
UCHAR *pBase;
UCHAR *pAlign;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = NULL;
pmeh->flags = 0;
pCmdAlloc = (MCDALLOCCMDI *)(pmeh + 1);
pCmdAlloc->command = MCD_ALLOC;
pCmdAlloc->sourceProcessID = GetCurrentProcessId();
pCmdAlloc->numBytes = totalSize;
pCmdAlloc->flags = flags;
pBase = (UCHAR *)IntToPtr( EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 4, (char *)pMCDHandle) );
if (!pBase)
return (VOID *)NULL;
pAlign = (UCHAR *)(((ULONG_PTR)(pBase + sizeof(MCDMEMHDRI)) +
(MCD_MEM_ALIGN - 1)) &
~(MCD_MEM_ALIGN - 1));
pMCDMemHdr = (MCDMEMHDRI *)(pAlign - sizeof(MCDMEMHDRI));
pMCDMemHdr->flags = 0;
pMCDMemHdr->numBytes = numBytes;
pMCDMemHdr->pMaxMem = (VOID *)((char *)pMCDMemHdr + totalSize);
pMCDMemHdr->hMCDMem = *pMCDHandle;
pMCDMemHdr->pBase = pBase;
return (VOID *)(pAlign);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDFree(MCDCONTEXT *pMCDContext,
// VOID *pMem);
//
// Frees a chunk of driver-allocated shared memory.
//
// Returns TRUE for success, FALSE for failure.
//
//**************************************************************************
BOOL APIENTRY MCDFree(MCDCONTEXT *pMCDContext, VOID *pMCDMem)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDFREECMDI)];
MCDFREECMDI *pCmdFree;
MCDESC_HEADER *pmeh;
MCDMEMHDRI *pMCDMemHdr;
#ifdef MCD95
//
// Driver already shutdown, therefore memory already deleted.
//
if (!pMCDEngEscFilter)
return TRUE;
#endif
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = NULL;
pmeh->flags = 0;
pCmdFree = (MCDFREECMDI *)(pmeh + 1);
pCmdFree->command = MCD_FREE;
pCmdFree->hMCDMem = pMCDMemHdr->hMCDMem;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// VOID APIENTRY MCDBeginState(MCDCONTEXT *pMCDContext, VOID *pMCDMem);
//
// Begins a batch of state commands to issue to the driver.
//
//**************************************************************************
VOID APIENTRY MCDBeginState(MCDCONTEXT *pMCDContext, VOID *pMCDMem)
{
MCDMEMHDRI *pMCDMemHdr;
MCDSTATECMDI *pMCDStateCmd;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
pMCDStateCmd = (MCDSTATECMDI *)pMCDMem;
pMCDStateCmd->command = MCD_STATE;
pMCDStateCmd->numStates = 0;
pMCDStateCmd->pNextState = (MCDSTATE *)(pMCDStateCmd + 1);
pMCDStateCmd->pMaxState = (MCDSTATE *)(pMCDMemHdr->pMaxMem);
pMCDMemHdr->pMCDContext = pMCDContext;
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDFlushState(VOID pMCDMem);
//
// Flushes a batch of state commands to the driver.
//
// Returns TRUE for success, FALSE for failure.
//
//**************************************************************************
BOOL APIENTRY MCDFlushState(VOID *pMCDMem)
{
MCDESC_HEADER meh;
MCDMEMHDRI *pMCDMemHdr;
MCDSTATECMDI *pMCDStateCmd;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
pMCDStateCmd = (MCDSTATECMDI *)pMCDMem;
InitMcdEscContext(&meh, pMCDMemHdr->pMCDContext);
meh.hSharedMem = pMCDMemHdr->hMCDMem;
meh.pSharedMem = (char *)pMCDMem;
meh.sharedMemSize = (ULONG)((char *)pMCDStateCmd->pNextState -
(char *)pMCDStateCmd);
meh.flags = 0;
if (!meh.sharedMemSize)
return TRUE;
return (BOOL)EXTESCAPE(pMCDMemHdr->pMCDContext->hdc, MCDFUNCS,
sizeof(MCDESC_HEADER), (char *)&meh,
0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDAddState(VOID *pMCDMem, ULONG stateToChange,
// ULONG stateValue);
//
// Adds a state to a state buffer (started with MCDBeginState). If there
// is no room in the state stream (i.e., the memory buffer), the current
// batch of state commands is automatically flushed.
//
//
// Returns TRUE for success, FALSE for failure. A FALSE return will occur
// if an automatic flush is performed which fails.
//
//**************************************************************************
BOOL APIENTRY MCDAddState(VOID *pMCDMem, ULONG stateToChange,
ULONG stateValue)
{
MCDSTATECMDI *pMCDStateCmd;
MCDSTATE *pState;
BOOL retVal = TRUE;
pMCDStateCmd = (MCDSTATECMDI *)pMCDMem;
if (((char *)pMCDStateCmd->pNextState + sizeof(MCDSTATE)) >=
(char *)pMCDStateCmd->pMaxState) {
MCDMEMHDRI *pMCDMemHdr = (MCDMEMHDRI *)
((char *)pMCDMem - sizeof(MCDMEMHDRI));
retVal = MCDFlushState(pMCDMem);
pMCDStateCmd = (MCDSTATECMDI *)pMCDMem;
pMCDStateCmd->command = MCD_STATE;
pMCDStateCmd->numStates = 0;
pMCDStateCmd->pNextState = (MCDSTATE *)(pMCDStateCmd + 1);
pMCDStateCmd->pMaxState = (MCDSTATE *)(pMCDMemHdr->pMaxMem);
}
pMCDStateCmd->numStates++;
pState = pMCDStateCmd->pNextState;
pState->size = sizeof(MCDSTATE);
pState->state = stateToChange;
pState->stateValue = stateValue;
pMCDStateCmd->pNextState++;
return retVal;
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDAddStateStruct(VOID *pMCDMem, ULONG stateToChange,
// VOID *pStateValue, ULONG stateValueSize)
//
//
// Adds a state structure to a state buffer (started with MCDBeginState). If
// there is no room in the state stream (i.e., the memory buffer), the current
// batch of state commands is automatically flushed.
//
//
// Returns TRUE for success, FALSE for failure. A FALSE return will occur
// if an automatic flush is performed which fails.
//
//**************************************************************************
BOOL APIENTRY MCDAddStateStruct(VOID *pMCDMem, ULONG stateToChange,
VOID *pStateValue, ULONG stateValueSize)
{
MCDSTATECMDI *pMCDStateCmd;
MCDSTATE *pState;
BOOL retVal = FALSE;
pMCDStateCmd = (MCDSTATECMDI *)pMCDMem;
if (((char *)pMCDStateCmd->pNextState + stateValueSize) >=
(char *)pMCDStateCmd->pMaxState) {
MCDMEMHDRI *pMCDMemHdr = (MCDMEMHDRI *)
((char *)pMCDMem - sizeof(MCDMEMHDRI));
retVal = MCDFlushState(pMCDMem);
pMCDStateCmd = (MCDSTATECMDI *)pMCDMem;
pMCDStateCmd->command = MCD_STATE;
pMCDStateCmd->numStates = 0;
pMCDStateCmd->pNextState = (MCDSTATE *)(pMCDStateCmd + 1);
pMCDStateCmd->pMaxState = (MCDSTATE *)(pMCDMemHdr->pMaxMem);
}
pMCDStateCmd->numStates++;
pState = pMCDStateCmd->pNextState;
pState->state = stateToChange;
pState->size = offsetof(MCDSTATE, stateValue) + stateValueSize;
memcpy((char *)&pState->stateValue, (char *)pStateValue, stateValueSize);
pMCDStateCmd->pNextState =
(MCDSTATE *)(((char *)pMCDStateCmd->pNextState) + pState->size);
return retVal;
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDSetViewport(MCDCONTEXT *pMCDContext, VOID pMCDMem,
// MCDVIEWPORT pMCDViewport)
//
// Establishes the viewport scaling to convert transformed coordinates to
// screen coordinates.
//
//**************************************************************************
BOOL APIENTRY MCDSetViewport(MCDCONTEXT *pMCDContext, VOID *pMCDMem,
MCDVIEWPORT *pMCDViewport)
{
MCDESC_HEADER meh;
MCDMEMHDRI *pMCDMemHdr;
MCDVIEWPORTCMDI *pMCDViewportCmd;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
pMCDViewportCmd = (MCDVIEWPORTCMDI *)pMCDMem;
pMCDViewportCmd->MCDViewport = *pMCDViewport;
pMCDViewportCmd->command = MCD_VIEWPORT;
InitMcdEscContext(&meh, pMCDContext);
meh.hSharedMem = pMCDMemHdr->hMCDMem;
meh.pSharedMem = (char *)pMCDMem;
meh.sharedMemSize = sizeof(MCDVIEWPORTCMDI);
meh.flags = 0;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(MCDESC_HEADER), (char *)&meh,
0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// ULONG APIENTRY MCDQueryMemStatus((VOID *pMCDMem);
//
// Returns the status of the specified memory block. Return values are:
//
// MCD_MEM_READY - memory is available for client access
// MCD_MEM_BUSY - memory is busy due to driver access
// MCD_MEM_INVALID - queried memory is invalid
//
//**************************************************************************
ULONG APIENTRY MCDQueryMemStatus(VOID *pMCDMem)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDMEMSTATUSCMDI)];
MCDMEMHDRI *pMCDMemHdr =
(MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
MCDMEMSTATUSCMDI *pCmdMemStatus;
MCDESC_HEADER *pmeh;
#ifdef MCD95
//
// Driver already shutdown, therefore memory already deleted.
//
if (!pMCDEngEscFilter)
return MCD_MEM_INVALID;
#endif
pmeh = InitMcdEscEmpty((MCDESC_HEADER *)(cmdBuffer));
pmeh->flags = 0;
pCmdMemStatus = (MCDMEMSTATUSCMDI *)(pmeh + 1);
pCmdMemStatus->command = MCD_QUERYMEMSTATUS;
pCmdMemStatus->hMCDMem = pMCDMemHdr->hMCDMem;
return (ULONG)EXTESCAPE(pMCDMemHdr->pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDProcessBatch(MCDCONTEXT *pMCDContext, VOID pMCDMem,
// ULONG batchSize, VOID *pMCDFirstCmd)
//
// Processes a batch of primitives pointed to by pMCDMem.
//
// Returns TRUE if the batch was processed without error, FALSE otherwise.
//
//**************************************************************************
PVOID APIENTRY MCDProcessBatch(MCDCONTEXT *pMCDContext, VOID *pMCDMem,
ULONG batchSize, VOID *pMCDFirstCmd,
int cExtraSurfaces,
LPDIRECTDRAWSURFACE *pdds)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + MCD_MAXMIPMAPLEVEL*sizeof(DWORD)];
MCDESC_HEADER *pmeh;
MCDMEMHDRI *pMCDMemHdr;
int i;
ULONG_PTR *pdwSurf;
#if DBG
if (McdDebugFlags & MCDDEBUG_DISABLE_PROCBATCH)
{
MCDSync(pMCDContext);
return pMCDFirstCmd;
}
#endif
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
pmeh = InitMcdEscSurfaces((MCDESC_HEADER *)cmdBuffer, pMCDContext);
pmeh->hSharedMem = pMCDMemHdr->hMCDMem;
pmeh->pSharedMem = (char *)pMCDFirstCmd;
pmeh->sharedMemSize = batchSize;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK | MCDESC_FL_BATCH;
if (SUPPORTS_DIRECT())
{
pmeh->flags |= MCDESC_FL_SURFACES | MCDESC_FL_LOCK_SURFACES;
}
else if (pmeh->msrfColor.hSurf != NULL ||
pmeh->msrfDepth.hSurf != NULL ||
cExtraSurfaces != 0)
{
return pMCDFirstCmd;
}
// Assert that we won't exceed the kernel's expectations
ASSERTOPENGL(MCD_MAXMIPMAPLEVEL <= MCDESC_MAX_LOCK_SURFACES,
"MCD_MAXMIPMAPLEVEL too large\n");
pmeh->cLockSurfaces = cExtraSurfaces;
pdwSurf = (ULONG_PTR *)(pmeh+1);
for (i = 0; i < cExtraSurfaces; i++)
{
*pdwSurf++ = ((LPDDRAWI_DDRAWSURFACE_INT)pdds[i])->lpLcl->hDDSurface;
}
return (PVOID)IntToPtr( EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh,
0, (char *)NULL) );
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDReadSpan(MCDCONTEXT *pMCDContext, VOID pMCDMem,
// ULONG x, ULONG y, ULONG numPixels, ULONG type)
//
// Reads a span of pixel data from the buffer requested by "type".
// The pixel values are returned in pMCDMem.
//
// Returns TRUE for success, FALSE for failure.
//
//**************************************************************************
BOOL APIENTRY MCDReadSpan(MCDCONTEXT *pMCDContext, VOID *pMCDMem,
ULONG x, ULONG y, ULONG numPixels, ULONG type)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDSPANCMDI)];
MCDESC_HEADER *pmeh;
MCDMEMHDRI *pMCDMemHdr;
MCDSPANCMDI *pMCDSpanCmd;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
pmeh = InitMcdEscSurfaces((MCDESC_HEADER *)cmdBuffer, pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->sharedMemSize = 0;
pmeh->flags = 0;
if (SUPPORTS_DIRECT())
{
pmeh->flags |= MCDESC_FL_SURFACES;
}
else if (pmeh->msrfColor.hSurf != NULL ||
pmeh->msrfDepth.hSurf != NULL)
{
return FALSE;
}
pMCDSpanCmd = (MCDSPANCMDI *)(pmeh + 1);
pMCDSpanCmd->command = MCD_READSPAN;
pMCDSpanCmd->hMem = pMCDMemHdr->hMCDMem;
pMCDSpanCmd->MCDSpan.x = x;
pMCDSpanCmd->MCDSpan.y = y;
pMCDSpanCmd->MCDSpan.numPixels = numPixels;
pMCDSpanCmd->MCDSpan.type = type;
pMCDSpanCmd->MCDSpan.pPixels = (VOID *)((char *)pMCDMem);
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDWriteSpan(MCDCONTEXT *pMCDContext, VOID pMCDMem,
// ULONG x, ULONG y, ULONG numPixels, ULONG type)
//
// Writes a span of pixel data to the buffer requested by "type".
// The pixel values are given in pMCDMem.
//
// Returns TRUE for success, FALSE for failure.
//
//**************************************************************************
BOOL APIENTRY MCDWriteSpan(MCDCONTEXT *pMCDContext, VOID *pMCDMem,
ULONG x, ULONG y, ULONG numPixels, ULONG type)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDSPANCMDI)];
MCDESC_HEADER *pmeh;
MCDMEMHDRI *pMCDMemHdr;
MCDSPANCMDI *pMCDSpanCmd;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
pmeh = InitMcdEscSurfaces((MCDESC_HEADER *)cmdBuffer, pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->sharedMemSize = 0;
pmeh->flags = 0;
if (SUPPORTS_DIRECT())
{
pmeh->flags |= MCDESC_FL_SURFACES;
}
else if (pmeh->msrfColor.hSurf != NULL ||
pmeh->msrfDepth.hSurf != NULL)
{
return FALSE;
}
pMCDSpanCmd = (MCDSPANCMDI *)(pmeh + 1);
pMCDSpanCmd->command = MCD_WRITESPAN;
pMCDSpanCmd->hMem = pMCDMemHdr->hMCDMem;
pMCDSpanCmd->MCDSpan.x = x;
pMCDSpanCmd->MCDSpan.y = y;
pMCDSpanCmd->MCDSpan.numPixels = numPixels;
pMCDSpanCmd->MCDSpan.type = type;
pMCDSpanCmd->MCDSpan.pPixels = (VOID *)((char *)pMCDMem);
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDClear(MCDCONTEXT *pMCDContext, RECTL rect, ULONG buffers);
//
// Clears buffers specified for the given rectangle. The current fill values
// will be used.
//
//**************************************************************************
BOOL APIENTRY MCDClear(MCDCONTEXT *pMCDContext, RECTL rect, ULONG buffers)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDCLEARCMDI)];
MCDCLEARCMDI *pClearCmd;
MCDESC_HEADER *pmeh;
#if DBG
if (McdDebugFlags & MCDDEBUG_DISABLE_CLEAR)
{
MCDSync(pMCDContext);
return FALSE;
}
#endif
pmeh = InitMcdEscSurfaces((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
if (SUPPORTS_DIRECT())
{
pmeh->flags |= MCDESC_FL_SURFACES;
}
else if (pmeh->msrfColor.hSurf != NULL ||
pmeh->msrfDepth.hSurf != NULL)
{
return FALSE;
}
pClearCmd = (MCDCLEARCMDI *)(pmeh + 1);
pClearCmd->command = MCD_CLEAR;
pClearCmd->buffers = buffers;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDSetScissorRect(MCDCONTEXT *pMCDContext, RECTL *pRect,
// BOOL bEnabled);
//
// Sets the scissor rectangle.
//
//**************************************************************************
//!! Need semaphore to remove display lock !!
BOOL APIENTRY MCDSetScissorRect(MCDCONTEXT *pMCDContext, RECTL *pRect,
BOOL bEnabled)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDSCISSORCMDI)];
MCDSCISSORCMDI *pScissorCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
pScissorCmd = (MCDSCISSORCMDI *)(pmeh + 1);
pScissorCmd->command = MCD_SCISSOR;
pScissorCmd->rect = *pRect;
pScissorCmd->bEnabled = bEnabled;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDSwap(MCDCONTEXT *pMCDContext, ULONG flags);
//
// Swaps the front and back buffers.
//
//**************************************************************************
BOOL APIENTRY MCDSwap(MCDCONTEXT *pMCDContext, ULONG flags)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDSWAPCMDI)];
MCDSWAPCMDI *pSwapCmd;
MCDESC_HEADER *pmeh;
// InitMcdEscSurfaces cannot be used because the context given
// is a temporary one constructed on the fly since SwapBuffers
// has only surface information.
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
// Swap cannot be called on DirectDraw surfaces because DirectDraw
// contexts cannot be double-buffered. These handles can therefore
// be forced to NULL.
pmeh->msrfColor.hSurf = NULL;
pmeh->msrfDepth.hSurf = NULL;
#ifdef MCD95
pmeh->flags = MCDESC_FL_DISPLAY_LOCK | MCDESC_FL_SWAPBUFFER;
#else
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
#endif
if (SUPPORTS_DIRECT())
{
pmeh->flags |= MCDESC_FL_SURFACES;
}
pSwapCmd = (MCDSWAPCMDI *)(pmeh + 1);
pSwapCmd->command = MCD_SWAP;
pSwapCmd->flags = flags;
#ifdef MCD95
pSwapCmd->hwnd = WindowFromDC(pMCDContext->hdc);
#endif
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDDeleteContext(MCDCONTEXT *pMCDContext);
//
// Deletes the specified context. This will free the buffers associated with
// the context, but will *not* free memory or textures created with the
// context.
//
//**************************************************************************
BOOL APIENTRY MCDDeleteContext(MCDCONTEXT *pMCDContext)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDDELETERCCMDI)];
MCDDELETERCCMDI *pDeleteRcCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
pDeleteRcCmd = (MCDDELETERCCMDI *)(pmeh + 1);
pDeleteRcCmd->command = MCD_DELETERC;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDAllocBuffers(MCDCONTEXT *pMCDContext)
//
// Allocates the buffers required for the specified context.
//
//**************************************************************************
BOOL APIENTRY MCDAllocBuffers(MCDCONTEXT *pMCDContext, RECTL *pWndRect)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDALLOCBUFFERSCMDI)];
MCDESC_HEADER *pmeh;
MCDALLOCBUFFERSCMDI *pAllocBuffersCmd;
#if DBG
if (McdDebugFlags & MCDDEBUG_DISABLE_ALLOCBUF)
{
return FALSE;
}
#endif
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pAllocBuffersCmd = (MCDALLOCBUFFERSCMDI *)(pmeh + 1);
pAllocBuffersCmd->command = MCD_ALLOCBUFFERS;
pAllocBuffersCmd->WndRect = *pWndRect;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDGetBuffers(MCDCONTEXT *pMCDContext,
// MCDRECTBUFFERS *pMCDBuffers);
//
// Returns information about the buffers (front, back, and depth) associated
// with the specified context.
//
//**************************************************************************
BOOL APIENTRY MCDGetBuffers(MCDCONTEXT *pMCDContext,
MCDRECTBUFFERS *pMCDBuffers)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDGETBUFFERSCMDI)];
MCDESC_HEADER *pmeh;
MCDGETBUFFERSCMDI *pGetBuffersCmd;
#if DBG
if (McdDebugFlags & MCDDEBUG_DISABLE_GETBUF)
{
if (pMCDBuffers)
{
pMCDBuffers->mcdFrontBuf.bufFlags &= ~MCDBUF_ENABLED;
pMCDBuffers->mcdBackBuf.bufFlags &= ~MCDBUF_ENABLED;
pMCDBuffers->mcdDepthBuf.bufFlags &= ~MCDBUF_ENABLED;
}
return TRUE;
}
#endif
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pGetBuffersCmd = (MCDGETBUFFERSCMDI *)(pmeh + 1);
pGetBuffersCmd->command = MCD_GETBUFFERS;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, sizeof(MCDRECTBUFFERS),
(char *)pMCDBuffers);
}
//******************************Public*Routine******************************
//
// ULONG MCDLock();
//
// Grab the MCD synchronization lock.
//
//**************************************************************************
static ULONG __MCDLockRequest(MCDCONTEXT *pMCDContext, ULONG tid)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDLOCKCMDI)];
MCDLOCKCMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pCmd = (MCDLOCKCMDI *)(pmeh + 1);
pCmd->command = MCD_LOCK;
return EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
ULONG APIENTRY MCDLock(MCDCONTEXT *pMCDContext)
{
ULONG ulRet;
ULONG tid;
tid = GetCurrentThreadId();
do
{
ulRet = __MCDLockRequest(pMCDContext, tid);
if (ulRet == MCD_LOCK_BUSY)
Sleep(0);
}
while (ulRet == MCD_LOCK_BUSY);
return ulRet;
}
//******************************Public*Routine******************************
//
// VOID MCDUnlock();
//
// Release the MCD synchronization lock.
//
//**************************************************************************
VOID APIENTRY MCDUnlock(MCDCONTEXT *pMCDContext)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDLOCKCMDI)];
MCDLOCKCMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pCmd = (MCDLOCKCMDI *)(pmeh + 1);
pCmd->command = MCD_UNLOCK;
EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// VOID MCDBindContext();
//
// Bind a new window to the specified context.
//
//**************************************************************************
BOOL APIENTRY MCDBindContext(MCDCONTEXT *pMCDContext, HDC hdc,
GLGENwindow *pwnd)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDBINDCONTEXTCMDI)];
MCDBINDCONTEXTCMDI *pCmd;
MCDESC_HEADER *pmeh;
ULONG_PTR dwMcdWindow;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->dwWindow = pwnd->dwMcdWindow;
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pCmd = (MCDBINDCONTEXTCMDI *)(pmeh + 1);
pCmd->command = MCD_BINDCONTEXT;
pCmd->hWnd = pwnd->gwid.hwnd;
dwMcdWindow = EXTESCAPE(hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
if (dwMcdWindow != 0)
{
pMCDContext->hdc = hdc;
pMCDContext->dwMcdWindow = dwMcdWindow;
if (pwnd->dwMcdWindow == 0)
{
// Save MCD server-side window handle in the GENwindow
pwnd->dwMcdWindow = dwMcdWindow;
}
else
{
ASSERTOPENGL(pwnd->dwMcdWindow == dwMcdWindow,
"dwMcdWindow mismatch\n");
}
return TRUE;
}
else
{
return FALSE;
}
}
//******************************Public*Routine******************************
//
// BOOL MCDSync();
//
// Synchronizes the 3D hardware.
//
//**************************************************************************
BOOL APIENTRY MCDSync(MCDCONTEXT *pMCDContext)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDSYNCCMDI)];
MCDSYNCCMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pCmd = (MCDSYNCCMDI *)(pmeh + 1);
pCmd->command = MCD_SYNC;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// MCDHANDLE MCDCreateTexture();
//
// Creates and loads a texture on the MCD device.
//
//**************************************************************************
MCDHANDLE APIENTRY MCDCreateTexture(MCDCONTEXT *pMCDContext,
MCDTEXTUREDATA *pTexData,
ULONG flags,
VOID *pSurface)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDCREATETEXCMDI)];
MCDCREATETEXCMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
pCmd = (MCDCREATETEXCMDI *)(pmeh + 1);
pCmd->command = MCD_CREATE_TEXTURE;
pCmd->pTexData = pTexData;
pCmd->flags = flags;
pCmd->pSurface = pSurface;
return (MCDHANDLE)IntToPtr( EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL) );
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDDeleteTexture(MCDCONTEXT *pMCDContext,
// MCDHANDLE hMCDTexture);
//
// Deletes the specified texture. This will free the device memory associated
// with the texture.
//
//**************************************************************************
BOOL APIENTRY MCDDeleteTexture(MCDCONTEXT *pMCDContext, MCDHANDLE hTex)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDDELETETEXCMDI)];
MCDDELETETEXCMDI *pDeleteTexCmd;
MCDESC_HEADER *pmeh;
#ifdef MCD95
//
// Driver already shutdown, therefore memory already deleted.
//
if (!pMCDEngEscFilter)
return MCD_MEM_INVALID;
#endif
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
pDeleteTexCmd = (MCDDELETETEXCMDI *)(pmeh + 1);
pDeleteTexCmd->command = MCD_DELETE_TEXTURE;
pDeleteTexCmd->hTex = hTex;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL MCDUpdateSubTexture();
//
// Updates a texture (or region of a texture).
//
//**************************************************************************
BOOL APIENTRY MCDUpdateSubTexture(MCDCONTEXT *pMCDContext,
MCDTEXTUREDATA *pTexData, MCDHANDLE hTex,
ULONG lod, RECTL *pRect)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDUPDATESUBTEXCMDI)];
MCDUPDATESUBTEXCMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
pCmd = (MCDUPDATESUBTEXCMDI *)(pmeh + 1);
pCmd->command = MCD_UPDATE_SUB_TEXTURE;
pCmd->hTex = hTex;
pCmd->pTexData = pTexData;
pCmd->lod = lod;
pCmd->rect = *pRect;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL MCDUpdateTexturePalette();
//
// Updates the palette for the specified texture.
//
//**************************************************************************
BOOL APIENTRY MCDUpdateTexturePalette(MCDCONTEXT *pMCDContext,
MCDTEXTUREDATA *pTexData, MCDHANDLE hTex,
ULONG start, ULONG numEntries)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDUPDATETEXPALETTECMDI)];
MCDUPDATETEXPALETTECMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
pCmd = (MCDUPDATETEXPALETTECMDI *)(pmeh + 1);
pCmd->command = MCD_UPDATE_TEXTURE_PALETTE;
pCmd->hTex = hTex;
pCmd->pTexData = pTexData;
pCmd->start = start;
pCmd->numEntries = numEntries;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL MCDUpdateTexturePriority();
//
// Updates the priority for the specified texture.
//
//**************************************************************************
BOOL APIENTRY MCDUpdateTexturePriority(MCDCONTEXT *pMCDContext,
MCDTEXTUREDATA *pTexData,
MCDHANDLE hTex)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDUPDATETEXPRIORITYCMDI)];
MCDUPDATETEXPRIORITYCMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
pCmd = (MCDUPDATETEXPRIORITYCMDI *)(pmeh + 1);
pCmd->command = MCD_UPDATE_TEXTURE_PRIORITY;
pCmd->hTex = hTex;
pCmd->pTexData = pTexData;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL MCDUpdateTextureStata();
//
// Updates the state for the specified texture.
//
//**************************************************************************
BOOL APIENTRY MCDUpdateTextureState(MCDCONTEXT *pMCDContext,
MCDTEXTUREDATA *pTexData,
MCDHANDLE hTex)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDUPDATETEXSTATECMDI)];
MCDUPDATETEXSTATECMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
pCmd = (MCDUPDATETEXSTATECMDI *)(pmeh + 1);
pCmd->command = MCD_UPDATE_TEXTURE_STATE;
pCmd->hTex = hTex;
pCmd->pTexData = pTexData;
return (BOOL)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// ULONG MCDTextureStatus();
//
// Returns the status for the specified texture.
//
//**************************************************************************
ULONG APIENTRY MCDTextureStatus(MCDCONTEXT *pMCDContext, MCDHANDLE hTex)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDTEXSTATUSCMDI)];
MCDTEXSTATUSCMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pCmd = (MCDTEXSTATUSCMDI *)(pmeh + 1);
pCmd->command = MCD_TEXTURE_STATUS;
pCmd->hTex = hTex;
return (ULONG)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// ULONG MCDTextureKey();
//
// Returns the driver-managed "key" for the specified texture.
//
//**************************************************************************
ULONG APIENTRY MCDTextureKey(MCDCONTEXT *pMCDContext, MCDHANDLE hTex)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDTEXKEYCMDI)];
MCDTEXKEYCMDI *pCmd;
MCDESC_HEADER *pmeh;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pCmd = (MCDTEXKEYCMDI *)(pmeh + 1);
pCmd->command = MCD_GET_TEXTURE_KEY;
pCmd->hTex = hTex;
return (ULONG)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDDescribeMcdLayerPlane(HDC hdc, LONG iPixelFormat,
// LONG iLayerPlane,
// MCDLAYERPLANE *pMcdPixelFmt)
//
// Returns hardware specific information about the specified layer plane.
//
//**************************************************************************
BOOL APIENTRY MCDDescribeMcdLayerPlane(HDC hdc, LONG iPixelFormat,
LONG iLayerPlane,
MCDLAYERPLANE *pMcdLayer)
{
BOOL bRet = FALSE;
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDLAYERPLANECMDI)];
MCDESC_HEADER *pmeh;
MCDLAYERPLANECMDI *pLayerPlaneCmd;
pmeh = InitMcdEscEmpty((MCDESC_HEADER *)(cmdBuffer));
pmeh->flags = 0;
pLayerPlaneCmd = (MCDLAYERPLANECMDI *)(pmeh + 1);
pLayerPlaneCmd->command = MCD_DESCRIBELAYERPLANE;
pLayerPlaneCmd->iPixelFormat = iPixelFormat;
pLayerPlaneCmd->iLayerPlane = iLayerPlane;
bRet = (BOOL)EXTESCAPE(hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, sizeof(MCDLAYERPLANE),
(char *)pMcdLayer);
return bRet;
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDDescribeLayerPlane(HDC hdc, LONG iPixelFormat,
// LONG iLayerPlane,
// LPLAYERPLANEDESCRIPTOR ppfd)
//
// Returns LAYERPLANEDESCRIPTOR describing the specified layer plane.
//
//**************************************************************************
BOOL APIENTRY MCDDescribeLayerPlane(HDC hdc, LONG iPixelFormat,
LONG iLayerPlane,
LPLAYERPLANEDESCRIPTOR plpd)
{
BOOL bRet = FALSE;
MCDLAYERPLANE McdLayer;
if (!MCDDescribeMcdLayerPlane(hdc, iPixelFormat, iLayerPlane, &McdLayer))
return bRet;
if (plpd)
{
plpd->nSize = sizeof(*plpd);
memcpy(&plpd->nVersion, &McdLayer.nVersion,
offsetof(LAYERPLANEDESCRIPTOR, cAccumBits) -
offsetof(LAYERPLANEDESCRIPTOR, nVersion));
plpd->cAccumBits = 0;
plpd->cAccumRedBits = 0;
plpd->cAccumGreenBits = 0;
plpd->cAccumBlueBits = 0;
plpd->cAccumAlphaBits = 0;
plpd->cDepthBits = 0;
plpd->cStencilBits = 0;
plpd->cAuxBuffers = McdLayer.cAuxBuffers;
plpd->iLayerPlane = McdLayer.iLayerPlane;
plpd->bReserved = 0;
plpd->crTransparent = McdLayer.crTransparent;
bRet = TRUE;
}
return bRet;
}
//******************************Public*Routine******************************
//
// LONG APIENTRY MCDSetLayerPalette(HDC hdc, BOOL bRealize,
// LONG cEntries, COLORREF *pcr)
//
// Sets the palette of the specified layer plane.
//
//**************************************************************************
LONG APIENTRY MCDSetLayerPalette(HDC hdc, LONG iLayerPlane, BOOL bRealize,
LONG cEntries, COLORREF *pcr)
{
LONG lRet = 0;
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDSETLAYERPALCMDI) +
(255 * sizeof(COLORREF))];
BYTE *pjBuffer = (BYTE *) NULL;
MCDESC_HEADER *pmeh;
MCDSETLAYERPALCMDI *pSetLayerPalCmd;
// Use stack allocation if possible; otherwise, allocate heap memory for
// the command buffer.
if (cEntries <= 256)
{
pmeh = (MCDESC_HEADER *)(cmdBuffer);
}
else
{
LONG lBytes;
lBytes = sizeof(MCDESC_HEADER) + sizeof(MCDSETLAYERPALCMDI) +
((cEntries - 1) * sizeof(COLORREF));
pjBuffer = (BYTE *) LocalAlloc(LMEM_FIXED, lBytes);
pmeh = (MCDESC_HEADER *)pjBuffer;
}
if (pmeh != (MCDESC_HEADER *) NULL)
{
InitMcdEscEmpty(pmeh);
pmeh->flags = MCDESC_FL_DISPLAY_LOCK;
pSetLayerPalCmd = (MCDSETLAYERPALCMDI *)(pmeh + 1);
pSetLayerPalCmd->command = MCD_SETLAYERPALETTE;
pSetLayerPalCmd->iLayerPlane = iLayerPlane;
pSetLayerPalCmd->bRealize = bRealize;
pSetLayerPalCmd->cEntries = cEntries;
memcpy(&pSetLayerPalCmd->acr[0], pcr, cEntries * sizeof(COLORREF));
lRet = (BOOL)EXTESCAPE(hdc, MCDFUNCS,
sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
// Delete the heap memory if it was allocated for the command buffer.
if (pjBuffer)
{
LocalFree(pjBuffer);
}
return lRet;
}
//******************************Public*Routine******************************
//
// ULONG APIENTRY MCDDrawPixels(MCDCONTEXT *pMCDContext, ULONG width,
// ULONG height, ULONG format, ULONG type,
// VOID *pPixels, BOOL packed)
//
// MCD version of glDrawPixels
//
//**************************************************************************
ULONG APIENTRY MCDDrawPixels(MCDCONTEXT *pMCDContext, ULONG width,
ULONG height, ULONG format, ULONG type,
VOID *pPixels, BOOL packed)
{
ULONG ulRet = (ULONG) FALSE;
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDDRAWPIXELSCMDI)];
MCDESC_HEADER *pmeh;
MCDDRAWPIXELSCMDI *pPixelsCmd;
pmeh = InitMcdEscSurfaces((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
if (SUPPORTS_DIRECT())
{
pmeh->flags |= MCDESC_FL_SURFACES;
}
else if (pmeh->msrfColor.hSurf != NULL ||
pmeh->msrfDepth.hSurf != NULL)
{
return 0;
}
pPixelsCmd = (MCDDRAWPIXELSCMDI *)(pmeh + 1);
pPixelsCmd->command = MCD_DRAW_PIXELS;
pPixelsCmd->width = width;
pPixelsCmd->height = height;
pPixelsCmd->format = format;
pPixelsCmd->type = type;
pPixelsCmd->packed = packed;
pPixelsCmd->pPixels = pPixels;
ulRet = (ULONG)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh,
0, (char *)NULL);
return ulRet;
}
//******************************Public*Routine******************************
//
// ULONG APIENTRY MCDReadPixels(MCDCONTEXT *pMCDContext, LONG x, LONG y,
// ULONG width, ULONG height, ULONG format,
// ULONG type, VOID *pPixels)
//
// MCD version of glReadPixels
//
//**************************************************************************
ULONG APIENTRY MCDReadPixels(MCDCONTEXT *pMCDContext, LONG x, LONG y,
ULONG width, ULONG height, ULONG format,
ULONG type, VOID *pPixels)
{
ULONG ulRet = (ULONG) FALSE;
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDREADPIXELSCMDI)];
MCDESC_HEADER *pmeh;
MCDREADPIXELSCMDI *pPixelsCmd;
pmeh = InitMcdEscSurfaces((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
if (SUPPORTS_DIRECT())
{
pmeh->flags |= MCDESC_FL_SURFACES;
}
else if (pmeh->msrfColor.hSurf != NULL ||
pmeh->msrfDepth.hSurf != NULL)
{
return 0;
}
pPixelsCmd = (MCDREADPIXELSCMDI *)(pmeh + 1);
pPixelsCmd->command = MCD_READ_PIXELS;
pPixelsCmd->x = x;
pPixelsCmd->y = y;
pPixelsCmd->width = width;
pPixelsCmd->height = height;
pPixelsCmd->format = format;
pPixelsCmd->type = type;
pPixelsCmd->pPixels = pPixels;
ulRet = (ULONG)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh,
0, (char *)NULL);
return ulRet;
}
//******************************Public*Routine******************************
//
// ULONG APIENTRY MCDCopyPixels(MCDCONTEXT *pMCDContext, LONG x, LONG y,
// ULONG width, ULONG height, ULONG type)
//
// MCD version of glCopyPixels
//
//**************************************************************************
ULONG APIENTRY MCDCopyPixels(MCDCONTEXT *pMCDContext, LONG x, LONG y,
ULONG width, ULONG height, ULONG type)
{
ULONG ulRet = (ULONG) FALSE;
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDCOPYPIXELSCMDI)];
MCDESC_HEADER *pmeh;
MCDCOPYPIXELSCMDI *pPixelsCmd;
pmeh = InitMcdEscSurfaces((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
if (SUPPORTS_DIRECT())
{
pmeh->flags |= MCDESC_FL_SURFACES;
}
else if (pmeh->msrfColor.hSurf != NULL ||
pmeh->msrfDepth.hSurf != NULL)
{
return 0;
}
pPixelsCmd = (MCDCOPYPIXELSCMDI *)(pmeh + 1);
pPixelsCmd->command = MCD_COPY_PIXELS;
pPixelsCmd->x = x;
pPixelsCmd->y = y;
pPixelsCmd->width = width;
pPixelsCmd->height = height;
pPixelsCmd->type = type;
ulRet = (ULONG)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh,
0, (char *)NULL);
return ulRet;
}
//******************************Public*Routine******************************
//
// ULONG APIENTRY MCDPixelMap(MCDCONTEXT *pMCDContext, ULONG mapType,
// ULONG mapSize, VOID *pMap)
//
// MCD version of glPixelMap
//
//**************************************************************************
ULONG APIENTRY MCDPixelMap(MCDCONTEXT *pMCDContext, ULONG mapType,
ULONG mapSize, VOID *pMap)
{
ULONG ulRet = (ULONG) FALSE;
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDPIXELMAPCMDI)];
MCDESC_HEADER *pmeh;
MCDPIXELMAPCMDI *pPixelsCmd;
pmeh = InitMcdEscContext((MCDESC_HEADER *)(cmdBuffer), pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pPixelsCmd = (MCDPIXELMAPCMDI *)(pmeh + 1);
pPixelsCmd->command = MCD_PIXEL_MAP;
pPixelsCmd->mapType = mapType;
pPixelsCmd->mapSize = mapSize;
pPixelsCmd->pMap = pMap;
ulRet = (ULONG)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh,
0, (char *)NULL);
return ulRet;
}
//******************************Public*Routine******************************
//
// MCDDestroyWindow
//
// Forwards user-mode window destruction notification to the server for
// resource cleanup
//
//**************************************************************************
void APIENTRY MCDDestroyWindow(HDC hdc, ULONG_PTR dwMcdWindow)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDPIXELMAPCMDI)];
MCDESC_HEADER *pmeh;
MCDDESTROYWINDOWCMDI *pmdwc;
pmeh = InitMcdEscEmpty((MCDESC_HEADER *)cmdBuffer);
pmeh->dwWindow = dwMcdWindow;
pmeh->flags = 0;
pmdwc = (MCDDESTROYWINDOWCMDI *)(pmeh + 1);
pmdwc->command = MCD_DESTROY_WINDOW;
EXTESCAPE(hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh,
0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// MCDGetTextureFormats
//
//**************************************************************************
int APIENTRY MCDGetTextureFormats(MCDCONTEXT *pMCDContext, int nFmts,
struct _DDSURFACEDESC *pddsd)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER) + sizeof(MCDGETTEXTUREFORMATSCMDI)];
MCDESC_HEADER *pmeh;
MCDGETTEXTUREFORMATSCMDI *pmgtf;
pmeh = InitMcdEscContext((MCDESC_HEADER *)cmdBuffer, pMCDContext);
pmeh->hSharedMem = NULL;
pmeh->pSharedMem = (VOID *)NULL;
pmeh->flags = 0;
pmgtf = (MCDGETTEXTUREFORMATSCMDI *)(pmeh + 1);
pmgtf->command = MCD_GET_TEXTURE_FORMATS;
pmgtf->nFmts = nFmts;
return (int)EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh,
nFmts*sizeof(DDSURFACEDESC), (char *)pddsd);
}
//******************************Public*Routine******************************
//
// MCDSwapMultiple
//
//**************************************************************************
DWORD APIENTRY MCDSwapMultiple(HDC hdc, UINT cBuffers, GENMCDSWAP *pgms)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER)+
sizeof(HDC)*MCDESC_MAX_EXTRA_WNDOBJ+
sizeof(MCDSWAPMULTIPLECMDI)];
MCDSWAPMULTIPLECMDI *pSwapMultCmd;
MCDESC_HEADER *pmeh;
UINT i;
HDC *phdc;
// InitMcdEscSurfaces cannot be used because the context given
// is a temporary one constructed on the fly since SwapBuffers
// has only surface information.
pmeh = InitMcdEscEmpty((MCDESC_HEADER *)cmdBuffer);
pmeh->flags = MCDESC_FL_DISPLAY_LOCK | MCDESC_FL_EXTRA_WNDOBJ;
pmeh->cExtraWndobj = cBuffers;
phdc = (HDC *)(pmeh+1);
pSwapMultCmd = (MCDSWAPMULTIPLECMDI *)((BYTE *)phdc+cBuffers*sizeof(HDC));
pSwapMultCmd->command = MCD_SWAP_MULTIPLE;
pSwapMultCmd->cBuffers = cBuffers;
for (i = 0; i < cBuffers; i++)
{
*phdc++ = pgms->pwswap->hdc;
pSwapMultCmd->auiFlags[i] = pgms->pwswap->uiFlags;
pSwapMultCmd->adwMcdWindow[i] = pgms->pwnd->dwMcdWindow;
}
return (DWORD)EXTESCAPE(hdc, MCDFUNCS, sizeof(cmdBuffer),
(char *)pmeh, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// MCDProcessBatch2
//
// Processes a batch of primitives pointed to by pMCDMem.
// This is the 2.0 front-end processing entry point.
//
// Returns last command processed or NULL if all are processed.
//
//**************************************************************************
PVOID APIENTRY MCDProcessBatch2(MCDCONTEXT *pMCDContext,
VOID *pMCDCmdMem,
VOID *pMCDPrimMem,
MCDCOMMAND *pMCDFirstCmd,
int cExtraSurfaces,
LPDIRECTDRAWSURFACE *pdds,
ULONG cmdFlagsAll,
ULONG primFlags,
MCDTRANSFORM *pMCDTransform,
MCDMATERIALCHANGES *pMCDMatChanges)
{
BYTE cmdBuffer[sizeof(MCDESC_HEADER)+
MCD_MAXMIPMAPLEVEL*sizeof(DWORD)];
MCDESC_HEADER *pmeh;
MCDMEMHDRI *pMCDCmdMemHdr, *pMCDPrimMemHdr;
int i;
ULONG_PTR *pdwSurf;
MCDPROCESSCMDI *pProcessCmd;
// Version is checked in mcdcx.c.
ASSERTOPENGL(SUPPORTS_20(), "MCDProcessBatch2 requires 2.0\n");
// This function requires 2.0 so direct support should also exist.
ASSERTOPENGL(SUPPORTS_DIRECT(), "MCDProcessBatch2 requires direct\n");
#if DBG
if (McdDebugFlags & MCDDEBUG_DISABLE_PROCBATCH)
{
MCDSync(pMCDContext);
return pMCDFirstCmd;
}
#endif
pMCDCmdMemHdr = (MCDMEMHDRI *)((char *)pMCDCmdMem - sizeof(MCDMEMHDRI));
pMCDPrimMemHdr = (MCDMEMHDRI *)((char *)pMCDPrimMem - sizeof(MCDMEMHDRI));
pmeh = InitMcdEscSurfaces((MCDESC_HEADER *)cmdBuffer, pMCDContext);
pmeh->hSharedMem = pMCDCmdMemHdr->hMCDMem;
pmeh->pSharedMem = (char *)pMCDCmdMem;
pmeh->sharedMemSize = sizeof(MCDPROCESSCMDI);
pmeh->flags = MCDESC_FL_DISPLAY_LOCK |
MCDESC_FL_SURFACES | MCDESC_FL_LOCK_SURFACES;
// Assert that we won't exceed the kernel's expectations
ASSERTOPENGL(MCD_MAXMIPMAPLEVEL <= MCDESC_MAX_LOCK_SURFACES,
"MCD_MAXMIPMAPLEVEL too large\n");
pmeh->cLockSurfaces = cExtraSurfaces;
pdwSurf = (ULONG_PTR *)(pmeh+1);
for (i = 0; i < cExtraSurfaces; i++)
{
*pdwSurf++ = ((LPDDRAWI_DDRAWSURFACE_INT)pdds[i])->lpLcl->hDDSurface;
}
pProcessCmd = (MCDPROCESSCMDI *)pMCDCmdMem;
pProcessCmd->command = MCD_PROCESS;
pProcessCmd->hMCDPrimMem = pMCDPrimMemHdr->hMCDMem;
pProcessCmd->pMCDFirstCmd = pMCDFirstCmd;
pProcessCmd->cmdFlagsAll = cmdFlagsAll;
pProcessCmd->primFlags = primFlags;
pProcessCmd->pMCDTransform = pMCDTransform;
pProcessCmd->pMCDMatChanges = pMCDMatChanges;
return (PVOID)IntToPtr( EXTESCAPE(pMCDContext->hdc, MCDFUNCS,
sizeof(cmdBuffer), (char *)pmeh,
0, (char *)NULL) );
}
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