archive
/
windows-nt-4.0
mirror of https://github.com/lianthony/NT4.0
2
0
Fork 0
Code Issues Projects Releases Wiki Activity
Windows NT 4.0 source code leak
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
2 Commits
1 Branch
0 Tags
184 MiB
 
 
 
 
 
 
Tree: b4a8d373d8
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'b4a8d373d8'
${ noResults }
windows-nt-4.0/private/windows/opengl/mcd/client/mcd.c

1657 lines
52 KiB
Raw Blame History

//******************************Module*Header*******************************
// Module Name: mcd.c
//
// Main module for Mini Client Driver wrapper library.
//
// Copyright (c) 1995 Microsoft Corporation
//**************************************************************************
#include <stddef.h>
#include <stdarg.h>
#include <windows.h>
#include <wtypes.h>
#include <rx.h>
#include <windef.h>
#include <wingdi.h>
#include <winddi.h>
#include "mcdrv.h"
#include "mcd.h"
#include "mcdint.h"
#include "debug.h"
extern ULONG McdFlags;
extern ULONG McdPrivateFlags;
#if DBG
extern ULONG McdDebugFlags;
#endif
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDGetDriverInfo(HDC hdc)
//
// Checks to determine if the device driver reports MCD capabilities.
//
//**************************************************************************
BOOL APIENTRY MCDGetDriverInfo(HDC hdc, MCDDRIVERINFO *pMCDDriverInfo)
{
int rxId = RXFUNCS;
BYTE cmdBuffer[sizeof(RXHDR) + sizeof(MCDDRIVERINFOCMDI)];
RXHDR *prxHdr;
MCDDRIVERINFOCMDI *pInfoCmd;
if ( !(McdPrivateFlags & MCDPRIVATE_MCD_ENABLED) )
{
return FALSE;
}
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = NULL;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pInfoCmd = (MCDDRIVERINFOCMDI *)(prxHdr + 1);
pInfoCmd->command = MCD_DRIVERINFO;
// Force the version to 0
pMCDDriverInfo->verMajor = 0;
if (!(BOOL)ExtEscape(hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, sizeof(MCDDRIVERINFO),
(char *)pMCDDriverInfo))
return FALSE;
// See if the driver filled in a non-null version:
return (pMCDDriverInfo->verMajor != 0);
}
//******************************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(RXHDR) + sizeof(MCDPIXELFORMATCMDI)];
RXHDR *prxHdr;
MCDPIXELFORMATCMDI *pPixelFmtCmd;
if ( !(McdPrivateFlags & MCDPRIVATE_PALETTEFORMATS) &&
((GetDeviceCaps(hdc, BITSPIXEL) * GetDeviceCaps(hdc, PLANES)) == 8) &&
(GetDeviceCaps(hdc, RASTERCAPS) & RC_PALETTE) )
{
return lRet;
}
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = NULL;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pPixelFmtCmd = (MCDPIXELFORMATCMDI *)(prxHdr + 1);
pPixelFmtCmd->command = MCD_DESCRIBEPIXELFORMAT;
pPixelFmtCmd->iPixelFormat = iPixelFormat;
lRet = (LONG)ExtEscape(hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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,
(MCDPIXELFORMAT *) 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);
memcpy(&ppfd->iPixelType, &mcdPixelFmt.iPixelType,
offsetof(MCDPIXELFORMAT, cDepthBits) - offsetof(MCDPIXELFORMAT, iPixelType));
ppfd->cDepthBits = mcdPixelFmt.cDepthBits;
//!!!mcd -- This is copied from generic\pixelfmt.c. Perhaps we
//!!!mcd should call DescribePixelFormat to fill it in with
//!!!mcd the data of the first generic pixelformat. Or fill
//!!!mcd this in later when we return.
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,
// HWND hwnd,
// HDC hdc,
// LONG iPixelFormat,
// LONG iLayerPlane,
// ULONG flags)
//
// Creates an MCD rendering context for the specified hdc/hwnd according
// to the specified flags.
//
//**************************************************************************
BOOL APIENTRY MCDCreateContext(MCDCONTEXT *pMCDContext,
MCDRCINFO *pRcInfo,
HWND hwnd, HDC hdc, LONG iPixelFormat,
LONG iLayerPlane, ULONG flags)
{
BYTE cmdBuffer[sizeof(RXHDR) + sizeof(RXCREATECONTEXT)];
RXHDR *prxHdr;
RXCREATECONTEXT *prxCreateContext;
prxHdr = (RXHDR *)cmdBuffer;
prxHdr->hrxRC = NULL;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->sharedMemSize = 0;
prxHdr->flags = RX_FL_CREATE_CONTEXT | RX_FL_MCD_REQUEST;
// Pack iPixelFormat in lower word, iLayerPlane in upper word
prxHdr->reserved1 = iPixelFormat | (iLayerPlane << 16);
prxHdr->reserved2 = McdFlags;
prxHdr->reserved3 = (ULONG)pRcInfo;
prxCreateContext = (RXCREATECONTEXT *)(prxHdr + 1);
prxCreateContext->command = RXCMD_CREATE_CONTEXT;
prxCreateContext->hwnd = (ULONG)hwnd;
prxCreateContext->flags = flags;
pMCDContext->hMCDContext = (MCDHANDLE)ExtEscape(hdc, RXFUNCS,
sizeof(RXHDR) + sizeof(RXCREATECONTEXT),
(char *)cmdBuffer, sizeof(MCDRCINFO),
(char *)pRcInfo);
pMCDContext->hdc = hdc;
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(RXHDR) + sizeof(MCDALLOCCMDI)];
ULONG outBuffer;
ULONG totalSize = numBytes + MCD_MEM_ALIGN + sizeof(MCDMEMHDRI);
MCDALLOCCMDI *pCmdAlloc;
RXHDR *prxHdr;
VOID *pResult;
MCDMEMHDRI *pMCDMemHdr;
UCHAR *pBase;
UCHAR *pAlign;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pCmdAlloc = (MCDALLOCCMDI *)(prxHdr + 1);
pCmdAlloc->command = MCD_ALLOC;
pCmdAlloc->sourceProcessID = GetCurrentProcessId();
pCmdAlloc->numBytes = totalSize;
pCmdAlloc->flags = flags;
pBase = (UCHAR *)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 4, (char *)pMCDHandle);
if (!pBase)
return (VOID *)NULL;
pAlign = (UCHAR *)(((ULONG)(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(RXHDR) + sizeof(MCDFREECMDI)];
MCDFREECMDI *pCmdFree;
RXHDR *prxHdr;
MCDMEMHDRI *pMCDMemHdr;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = NULL;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pCmdFree = (MCDFREECMDI *)(prxHdr + 1);
pCmdFree->command = MCD_FREE;
pCmdFree->hMCDMem = pMCDMemHdr->hMCDMem;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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)
{
RXHDR rxHdr;
MCDMEMHDRI *pMCDMemHdr;
MCDSTATECMDI *pMCDStateCmd;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
pMCDStateCmd = (MCDSTATECMDI *)pMCDMem;
rxHdr.hrxRC = pMCDMemHdr->pMCDContext->hMCDContext;
rxHdr.hrxSharedMem = pMCDMemHdr->hMCDMem;
rxHdr.pSharedMem = (char *)pMCDMem;
rxHdr.sharedMemSize = (char *)pMCDStateCmd->pNextState -
(char *)pMCDStateCmd;
rxHdr.flags = RX_FL_MCD_REQUEST;
if (!rxHdr.sharedMemSize)
return TRUE;
return (BOOL)ExtEscape(pMCDMemHdr->pMCDContext->hdc, RXFUNCS,
sizeof(RXHDR), (char *)&rxHdr, 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;
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)
{
RXHDR rxHdr;
MCDMEMHDRI *pMCDMemHdr;
MCDVIEWPORTCMDI *pMCDViewportCmd;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
pMCDViewportCmd = (MCDVIEWPORTCMDI *)pMCDMem;
pMCDViewportCmd->MCDViewport = *pMCDViewport;
pMCDViewportCmd->command = MCD_VIEWPORT;
rxHdr.hrxRC = pMCDContext->hMCDContext;
rxHdr.hrxSharedMem = pMCDMemHdr->hMCDMem;
rxHdr.pSharedMem = (char *)pMCDMem;
rxHdr.sharedMemSize = sizeof(MCDVIEWPORTCMDI);
rxHdr.flags = RX_FL_MCD_REQUEST;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(RXHDR), (char *)&rxHdr, 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(RXHDR) + sizeof(MCDMEMSTATUSCMDI)];
MCDMEMHDRI *pMCDMemHdr =
(MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
MCDMEMSTATUSCMDI *pCmdMemStatus;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = NULL;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pCmdMemStatus = (MCDMEMSTATUSCMDI *)(prxHdr + 1);
pCmdMemStatus->command = MCD_QUERYMEMSTATUS;
pCmdMemStatus->hMCDMem = pMCDMemHdr->hMCDMem;
return (ULONG)ExtEscape(pMCDMemHdr->pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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)
{
RXHDR rxHdr;
MCDMEMHDRI *pMCDMemHdr;
#if DBG
if (McdDebugFlags & MCDDEBUG_DISABLE_PROCBATCH)
{
MCDSync(pMCDContext);
return pMCDFirstCmd;
}
#endif
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
rxHdr.hrxRC = pMCDContext->hMCDContext;
rxHdr.hrxSharedMem = pMCDMemHdr->hMCDMem;
rxHdr.pSharedMem = (char *)pMCDFirstCmd;
rxHdr.sharedMemSize = batchSize;
rxHdr.flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK | RX_FL_MCD_BATCH;
return (PVOID)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(RXHDR), (char *)&rxHdr, 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(RXHDR) + sizeof(MCDSPANCMDI)];
RXHDR *prxHdr;
MCDMEMHDRI *pMCDMemHdr;
MCDSPANCMDI *pMCDSpanCmd;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
prxHdr = (RXHDR *)cmdBuffer;
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->sharedMemSize = 0;
prxHdr->flags = RX_FL_MCD_REQUEST;
pMCDSpanCmd = (MCDSPANCMDI *)(prxHdr + 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, RXFUNCS,
sizeof(cmdBuffer), (char *)prxHdr, 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(RXHDR) + sizeof(MCDSPANCMDI)];
RXHDR *prxHdr;
MCDMEMHDRI *pMCDMemHdr;
MCDSPANCMDI *pMCDSpanCmd;
pMCDMemHdr = (MCDMEMHDRI *)((char *)pMCDMem - sizeof(MCDMEMHDRI));
prxHdr = (RXHDR *)cmdBuffer;
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->sharedMemSize = 0;
prxHdr->flags = RX_FL_MCD_REQUEST;
pMCDSpanCmd = (MCDSPANCMDI *)(prxHdr + 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, RXFUNCS,
sizeof(cmdBuffer), (char *)prxHdr, 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(RXHDR) + sizeof(MCDCLEARCMDI)];
MCDCLEARCMDI *pClearCmd;
RXHDR *prxHdr;
#if DBG
if (McdDebugFlags & MCDDEBUG_DISABLE_CLEAR)
{
MCDSync(pMCDContext);
return FALSE;
}
#endif
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pClearCmd = (MCDCLEARCMDI *)(prxHdr + 1);
pClearCmd->command = MCD_CLEAR;
pClearCmd->buffers = buffers;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDSCISSORCMDI)];
MCDSCISSORCMDI *pScissorCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pScissorCmd = (MCDSCISSORCMDI *)(prxHdr + 1);
pScissorCmd->command = MCD_SCISSOR;
pScissorCmd->rect = *pRect;
pScissorCmd->bEnabled = bEnabled;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDSWAPCMDI)];
MCDSWAPCMDI *pSwapCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = 0;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pSwapCmd = (MCDSWAPCMDI *)(prxHdr + 1);
pSwapCmd->command = MCD_SWAP;
pSwapCmd->flags = flags;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDDELETERCCMDI)];
MCDDELETERCCMDI *pDeleteRcCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pDeleteRcCmd = (MCDDELETERCCMDI *)(prxHdr + 1);
pDeleteRcCmd->command = MCD_DELETERC;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDALLOCBUFFERSCMDI)];
RXHDR *prxHdr;
MCDALLOCBUFFERSCMDI *pAllocBuffersCmd;
#if DBG
if (McdDebugFlags & MCDDEBUG_DISABLE_ALLOCBUF)
{
return FALSE;
}
#endif
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pAllocBuffersCmd = (MCDALLOCBUFFERSCMDI *)(prxHdr + 1);
pAllocBuffersCmd->command = MCD_ALLOCBUFFERS;
pAllocBuffersCmd->WndRect = *pWndRect;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL APIENTRY MCDGetBuffers(MCDCONTEXT *pMCDContext,
// MCDBUFFERS *pMCDBuffers);
//
// Returns information about the buffers (front, back, and depth) associated
// with the specified context.
//
//**************************************************************************
BOOL APIENTRY MCDGetBuffers(MCDCONTEXT *pMCDContext, MCDBUFFERS *pMCDBuffers)
{
BYTE cmdBuffer[sizeof(RXHDR) + sizeof(MCDGETBUFFERSCMDI)];
RXHDR *prxHdr;
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
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pGetBuffersCmd = (MCDGETBUFFERSCMDI *)(prxHdr + 1);
pGetBuffersCmd->command = MCD_GETBUFFERS;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, sizeof(MCDBUFFERS),
(char *)pMCDBuffers);
}
//******************************Public*Routine******************************
//
// BOOL MCDLock();
//
// Grab the MCD synchronization lock.
//
//**************************************************************************
static BOOL __MCDLockRequest(MCDCONTEXT *pMCDContext, ULONG tid)
{
BYTE cmdBuffer[sizeof(RXHDR) + sizeof(MCDLOCKCMDI)];
MCDLOCKCMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pCmd = (MCDLOCKCMDI *)(prxHdr + 1);
pCmd->command = MCD_LOCK;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 0, (char *)NULL);
}
BOOL APIENTRY MCDLock(MCDCONTEXT *pMCDContext)
{
BOOL bRet;
ULONG tid;
tid = GetCurrentThreadId();
do
{
bRet = __MCDLockRequest(pMCDContext, tid);
if (!bRet)
Sleep(0);
}
while (bRet == FALSE);
return bRet;
}
//******************************Public*Routine******************************
//
// VOID MCDUnlock();
//
// Release the MCD synchronization lock.
//
//**************************************************************************
VOID APIENTRY MCDUnlock(MCDCONTEXT *pMCDContext)
{
BYTE cmdBuffer[sizeof(RXHDR) + sizeof(MCDLOCKCMDI)];
MCDLOCKCMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pCmd = (MCDLOCKCMDI *)(prxHdr + 1);
pCmd->command = MCD_UNLOCK;
ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// VOID MCDBindContext();
//
// Bind a new window to the specified context.
//
//**************************************************************************
BOOL APIENTRY MCDBindContext(MCDCONTEXT *pMCDContext, HWND hWnd, HDC hdc)
{
BYTE cmdBuffer[sizeof(RXHDR) + sizeof(MCDBINDCONTEXTCMDI)];
MCDBINDCONTEXTCMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pCmd = (MCDBINDCONTEXTCMDI *)(prxHdr + 1);
pCmd->command = MCD_BINDCONTEXT;
pCmd->hWnd = hWnd;
pMCDContext->hdc = hdc;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// BOOL MCDSync();
//
// Synchronizes the 3D hardware.
//
//**************************************************************************
BOOL APIENTRY MCDSync(MCDCONTEXT *pMCDContext)
{
BYTE cmdBuffer[sizeof(RXHDR) + sizeof(MCDSYNCCMDI)];
MCDSYNCCMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pCmd = (MCDSYNCCMDI *)(prxHdr + 1);
pCmd->command = MCD_SYNC;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDCREATETEXCMDI)];
MCDCREATETEXCMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pCmd = (MCDCREATETEXCMDI *)(prxHdr + 1);
pCmd->command = MCD_CREATE_TEXTURE;
pCmd->pTexData = pTexData;
pCmd->flags = flags;
pCmd->pSurface = pSurface;
return (MCDHANDLE)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDDELETETEXCMDI)];
MCDDELETETEXCMDI *pDeleteTexCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pDeleteTexCmd = (MCDDELETETEXCMDI *)(prxHdr + 1);
pDeleteTexCmd->command = MCD_DELETE_TEXTURE;
pDeleteTexCmd->hTex = hTex;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDUPDATESUBTEXCMDI)];
MCDUPDATESUBTEXCMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pCmd = (MCDUPDATESUBTEXCMDI *)(prxHdr + 1);
pCmd->command = MCD_UPDATE_SUB_TEXTURE;
pCmd->hTex = hTex;
pCmd->pTexData = pTexData;
pCmd->lod = lod;
pCmd->rect = *pRect;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDUPDATETEXPALETTECMDI)];
MCDUPDATETEXPALETTECMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pCmd = (MCDUPDATETEXPALETTECMDI *)(prxHdr + 1);
pCmd->command = MCD_UPDATE_TEXTURE_PALETTE;
pCmd->hTex = hTex;
pCmd->pTexData = pTexData;
pCmd->start = start;
pCmd->numEntries = numEntries;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDUPDATETEXPRIORITYCMDI)];
MCDUPDATETEXPRIORITYCMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pCmd = (MCDUPDATETEXPRIORITYCMDI *)(prxHdr + 1);
pCmd->command = MCD_UPDATE_TEXTURE_PRIORITY;
pCmd->hTex = hTex;
pCmd->pTexData = pTexData;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDUPDATETEXSTATECMDI)];
MCDUPDATETEXSTATECMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pCmd = (MCDUPDATETEXSTATECMDI *)(prxHdr + 1);
pCmd->command = MCD_UPDATE_TEXTURE_STATE;
pCmd->hTex = hTex;
pCmd->pTexData = pTexData;
return (BOOL)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 0, (char *)NULL);
}
//******************************Public*Routine******************************
//
// ULONG MCDTextureStatus();
//
// Returns the status for the specified texture.
//
//**************************************************************************
ULONG APIENTRY MCDTextureStatus(MCDCONTEXT *pMCDContext, MCDHANDLE hTex)
{
BYTE cmdBuffer[sizeof(RXHDR) + sizeof(MCDTEXSTATUSCMDI)];
MCDTEXSTATUSCMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pCmd = (MCDTEXSTATUSCMDI *)(prxHdr + 1);
pCmd->command = MCD_TEXTURE_STATUS;
pCmd->hTex = hTex;
return (ULONG)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDTEXKEYCMDI)];
MCDTEXKEYCMDI *pCmd;
RXHDR *prxHdr;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pCmd = (MCDTEXKEYCMDI *)(prxHdr + 1);
pCmd->command = MCD_GET_TEXTURE_KEY;
pCmd->hTex = hTex;
return (ULONG)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDLAYERPLANECMDI)];
RXHDR *prxHdr;
MCDLAYERPLANECMDI *pLayerPlaneCmd;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = NULL;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pLayerPlaneCmd = (MCDLAYERPLANECMDI *)(prxHdr + 1);
pLayerPlaneCmd->command = MCD_DESCRIBELAYERPLANE;
pLayerPlaneCmd->iPixelFormat = iPixelFormat;
pLayerPlaneCmd->iLayerPlane = iLayerPlane;
bRet = (BOOL)ExtEscape(hdc, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDSETLAYERPALCMDI) + (255 * sizeof(COLORREF))];
BYTE *pjBuffer = (BYTE *) NULL;
RXHDR *prxHdr;
MCDSETLAYERPALCMDI *pSetLayerPalCmd;
// Use stack allocation if possible; otherwise, allocate heap memory for
// the command buffer.
if (cEntries <= 256)
prxHdr = (RXHDR *)(cmdBuffer);
else
{
LONG lBytes;
lBytes = sizeof(RXHDR) + sizeof(MCDSETLAYERPALCMDI) +
((cEntries - 1) * sizeof(COLORREF));
pjBuffer = (BYTE *) LocalAlloc(LMEM_FIXED, lBytes);
prxHdr = (RXHDR *)pjBuffer;
}
if (prxHdr != (RXHDR *) NULL)
{
prxHdr->hrxRC = NULL;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST | RX_FL_MCD_DISPLAY_LOCK;
pSetLayerPalCmd = (MCDSETLAYERPALCMDI *)(prxHdr + 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, RXFUNCS,
sizeof(cmdBuffer),
(char *)prxHdr, 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(RXHDR) + sizeof(MCDDRAWPIXELSCMDI)];
RXHDR *prxHdr;
MCDDRAWPIXELSCMDI *pPixelsCmd;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pPixelsCmd = (MCDDRAWPIXELSCMDI *)(prxHdr + 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, RXFUNCS,
sizeof(cmdBuffer), (char *)prxHdr,
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(RXHDR) + sizeof(MCDREADPIXELSCMDI)];
RXHDR *prxHdr;
MCDREADPIXELSCMDI *pPixelsCmd;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pPixelsCmd = (MCDREADPIXELSCMDI *)(prxHdr + 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, RXFUNCS,
sizeof(cmdBuffer), (char *)prxHdr,
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(RXHDR) + sizeof(MCDCOPYPIXELSCMDI)];
RXHDR *prxHdr;
MCDCOPYPIXELSCMDI *pPixelsCmd;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pPixelsCmd = (MCDCOPYPIXELSCMDI *)(prxHdr + 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, RXFUNCS,
sizeof(cmdBuffer), (char *)prxHdr,
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(RXHDR) + sizeof(MCDPIXELMAPCMDI)];
RXHDR *prxHdr;
MCDPIXELMAPCMDI *pPixelsCmd;
prxHdr = (RXHDR *)(cmdBuffer);
prxHdr->hrxRC = pMCDContext->hMCDContext;
prxHdr->hrxSharedMem = NULL;
prxHdr->pSharedMem = (VOID *)NULL;
prxHdr->flags = RX_FL_MCD_REQUEST;
pPixelsCmd = (MCDPIXELMAPCMDI *)(prxHdr + 1);
pPixelsCmd->command = MCD_PIXEL_MAP;
pPixelsCmd->mapType = mapType;
pPixelsCmd->mapSize = mapSize;
pPixelsCmd->pMap = pMap;
ulRet = (ULONG)ExtEscape(pMCDContext->hdc, RXFUNCS,
sizeof(cmdBuffer), (char *)prxHdr,
0, (char *)NULL);
return ulRet;
}