Initial revision

1 files changed, 0 insertions, 949 deletions

diff --git a/3dc/win95/d3_func.cpp b/3dc/win95/d3_func.cpp
deleted file mode 100644
index 923e7f2..0000000
--- a/3dc/win95/d3_func.cpp
+++ /dev/null
@@ -1,949 +0,0 @@
-
-// Interface  functions (written in C++) for
-// Direct3D immediate mode system
-
-// Must link to C code in main engine system
-
-extern "C" {
-
-// Mysterious definition required by objbase.h 
-// (included via one of the include files below)
-// to start definition of obscure unique in the
-// universe IDs required  by Direct3D before it
-// will deign to cough up with anything useful...
-
-#define INITGUID
-
-#include "3dc.h"
-
-#include "awTexLd.h"
-
-#include "dxlog.h"
-#include "module.h"
-#include "inline.h"
-
-#include "d3_func.h"
-#include "d3dmacs.h"
-
-#include "string.h"
-
-#include "kshape.h"
-#include "eax.h"
-#include "vmanpset.h"
-
-extern "C++" {
-#include "chnktexi.h"
-#include "chnkload.hpp" // c++ header which ignores class definitions/member functions if __cplusplus is not defined ?
-#include "r2base.h"
-}
-
-#define UseLocalAssert No
-#include "ourasert.h"
-
-
-
-// FIXME!!! Structures in d3d structure
-// never have any size field set!!!
-// This is how it's done in Microsoft's
-// demo code --- but ARE THEY LYING???
-
-// As far as I know the execute buffer should always be in
-// system memory on any configuration, but this may
-// eventually have to be changed to something that reacts
-// to the caps bit in the driver, once drivers have reached
-// the point where we can safely assume that such bits will be valid.
-#define ForceExecuteBufferIntoSystemMemory Yes
-
-// To define TBLEND mode --- at present
-// it must be on for ramp textures and
-// off for evrything else...
-#define ForceTBlendCopy No
-
-// Set to Yes for debugging, to No for normal
-// operations (i.e. if we need a palettised
-// file for an accelerator, load it from
-// pre-palettised data, using code not yet 
-// written as of 27 / 8/ 96)
-#define QuantiseOnLoad Yes
-
-// Set to Yes to make default texture filter bilinear averaging rather
-// than nearest
-BOOL BilinearTextureFilter = 1;
-
-extern LPDIRECTDRAW lpDD;
-
-#if 0//
-// Externs
-
-extern int VideoMode;
-extern int DXMemoryMode;
-extern int ZBufferRequestMode;
-extern int RasterisationRequestMode;
-extern int SoftwareScanDrawRequestMode;
-extern SCREENDESCRIPTORBLOCK ScreenDescriptorBlock;
-extern VIEWDESCRIPTORBLOCK* Global_VDB_Ptr;
-extern IMAGEHEADER ImageHeaderArray[];
-extern BOOL MMXAvailable;
-
-
-//Globals
-
-int D3DDriverMode;
-
-
-
-static unsigned char DefaultD3DTextureFilterMin;
-static unsigned char DefaultD3DTextureFilterMax;
-
-
-#if SuppressWarnings
-static int* itemptr_tmp;
-
-#ifdef __WATCOMC__
-#pragma warning 389 5
-#pragma message("Note: Disabled Warning W389 'Integral value may be truncated...'")
-#endif
-
-#endif
-
-
-#endif //
-HRESULT LastError;
-int ExBufSize;
-
-LPDIRECT3DEXECUTEBUFFER lpD3DExecCmdBuf;
-LPDIRECTDRAWSURFACE lpZBuffer;
-extern LPDIRECTDRAWSURFACE lpDDSBack;
-extern LPDIRECTDRAWSURFACE lpDDSPrimary;
-extern LPDIRECTDRAWPALETTE lpDDPal[]; // DirectDraw palette
-
-D3DINFO d3d;
-BOOL D3DHardwareAvailable;
-
-int StartDriver;
-int StartFormat;
-
-
-static int devZBufDepth;
-
-
-extern int WindowMode;
-extern int ZBufferMode;
-extern int ScanDrawMode;
-extern int VideoModeColourDepth;
-
-extern enum TexFmt { D3TF_4BIT, D3TF_8BIT, D3TF_16BIT, D3TF_32BIT, D3TF_MAX } d3d_desired_tex_fmt;
-
-// Callback function to enumerate devices present
-// on system (required so that device interface GUID
-// can be retrieved if for no other reason).  Device
-// information is copied into instance of structure
-// defined in d3_func.h
-
-HRESULT WINAPI DeviceEnumerator(LPGUID lpGuid,
-        LPSTR lpDeviceDescription, LPSTR lpDeviceName,
-        LPD3DDEVICEDESC lpHWDesc, LPD3DDEVICEDESC lpHELDesc, LPVOID lpContext)
-{
-    int *lpStartDriver = (int *)lpContext;
-
-    /*
-      Record the D3D driver's description
-	  of itself.
-    */
-
-    memcpy(&d3d.Driver[d3d.NumDrivers].Guid, lpGuid, sizeof(GUID));
-    strcpy(d3d.Driver[d3d.NumDrivers].About, lpDeviceDescription);
-    strcpy(d3d.Driver[d3d.NumDrivers].Name, lpDeviceName);
-
-    /*
-      Is this a hardware device or software emulation?  Checking the color
-      model for a valid model works.
-    */
-
-    if (lpHWDesc->dcmColorModel)
-	  {
-	   D3DHardwareAvailable = Yes;
-       d3d.Driver[d3d.NumDrivers].Hardware = Yes;
-       memcpy(&d3d.Driver[d3d.NumDrivers].Desc, lpHWDesc,
-               sizeof(D3DDEVICEDESC));
-      } 
-    else 
-      {
-       d3d.Driver[d3d.NumDrivers].Hardware = No;
-       memcpy(&d3d.Driver[d3d.NumDrivers].Desc, lpHELDesc,
-               sizeof(D3DDEVICEDESC));
-      }
-
-    /*
-      Does this driver do texture mapping?
-    */
-
-    d3d.Driver[d3d.NumDrivers].Textures =
-        (d3d.Driver[d3d.NumDrivers].Desc.dpcTriCaps.dwTextureCaps &
-         D3DPTEXTURECAPS_PERSPECTIVE) ? TRUE : FALSE;
-
-    /*
-      Can this driver use a z-buffer?
-    */
-
-    d3d.Driver[d3d.NumDrivers].ZBuffer =
-        d3d.Driver[d3d.NumDrivers].Desc.dwDeviceZBufferBitDepth & (DDBD_16 | DDBD_24 | DDBD_32)
-                ? TRUE : FALSE;
-
-// The driver description is recorded here,
-// and some basic things like ZBuffering 
-// availability are noted separately.  Other
-// things such as hardware acceleration for 
-// translucency could potentially be noted here
-// for use in the Write functions to decide 
-// whether e.g. iflag_transparent should be 
-// treated as valid.  Obviously this will
-// require modification of the D3DDRIVERINFO
-// structure in d3_func.h
-
-    *lpStartDriver = d3d.NumDrivers;
-
-    d3d.NumDrivers++;
-    if (d3d.NumDrivers == MAX_D3D_DRIVERS)
-      return (D3DENUMRET_CANCEL);
-	else
-      return (D3DENUMRET_OK);
-}
-
-// This function is called from 
-// InitialiseDirect3DImmediateMode, to
-// insert and execute opcodes which cannot
-// be run during a "real" scene because of
-// some obscure feature of Direct3D.
-
-
-
-// Initialise Direct3D immediate mode system
-
-BOOL InitialiseDirect3DImmediateMode(void)
-{
-    BOOL RetVal;
-// to tell device enum function that it has not been called before
-	StartDriver = -1; 
-// to tell texture enum function that it has not been called before
-    StartFormat = -1;
-
-// default is no hardware
-// note that we are still resetting 
-// this here just in case the test from
-// InitialiseSystem failed and things aren't
-// what we thought...
-	D3DHardwareAvailable = No;
-
-// Zero d3d structure
-    memset(&d3d, 0, sizeof(D3DINFO));
-
-//  Set up Direct3D interface object
-  									 
-	LastError = lpDD->QueryInterface(IID_IDirect3D, (LPVOID*) &d3d.lpD3D);
-	LOGDXERR(LastError);
-
-    if (LastError != DD_OK)
-	  return FALSE;
-// Use callback function to enumerate available devices on system
-// and acquire device GUIDs etc
-// note that we are still resetting 
-// this here just in case the test from
-// InitialiseSystem failed and things aren't
-// what we thought...
-    LastError = d3d.lpD3D->EnumDevices(DeviceEnumerator, (LPVOID)&StartDriver);
-	LOGDXERR(LastError);
-
-    if (LastError != D3D_OK)
-      return FALSE;
-
-// Must be run as soon as possible in the 
-// initialisation sequence, but after the
-// device enumeration (and obviously after
-// DirectDraw object and surface initialisation).
-    SelectD3DDriverAndDrawMode();
-	d3d.ThisDriver = d3d.Driver[d3d.CurrentDriver].Desc;
-
-// Test!!! Release D3D object if we don't need it and do an
-// early exit.  Will this fix the banding problem on some
-// accelerators in palettised modes??
-// Evidently not.  Still, probably a good thing to do...
-// But!!! The whole banding problem appears to be a 
-// modeX emulation problem on some 3D accelerator cards...
-   #if 1
-   if (ScanDrawMode == ScanDrawDirectDraw)
-     {
-	  ReleaseDirect3DNotDDOrImages();
-	  return TRUE;
-	 }
-   #endif
-
-
-//  Note that this must be done BEFORE the D3D device object is created
-    #if SupportZBuffering
-    if (ZBufferMode != ZBufferOff)
-	{
-    	RetVal = CreateD3DZBuffer();
-		if (RetVal == FALSE) return FALSE;
-	}
-	#endif
-
-//  Set up Direct3D device object (must be linked to back buffer)
-    LastError = lpDDSBack->QueryInterface(d3d.Driver[d3d.CurrentDriver].Guid,
-               (LPVOID*)&d3d.lpD3DDevice);
-	LOGDXERR(LastError);
-
-    if (LastError != DD_OK) 
-      return FALSE;
-
-	AW_TL_ERC awErr = AwSetD3DDevice(d3d.lpD3DDevice);
-    GLOBALASSERT(AW_TLE_OK==awErr);
-// Enumerate texture formats and pick one
-// (palettised if possible).
-    d3d.NumTextureFormats = 0;
-
-	d3d_desired_tex_fmt=D3TF_8BIT;
-
-    LastError = d3d.lpD3DDevice->EnumTextureFormats
-              (TextureFormatsEnumerator,
-              (LPVOID)&StartFormat);
-	LOGDXERR(LastError);
-
-    if (LastError != D3D_OK) 
-    #if debug
-      {
-	   ReleaseDirect3D();
-	   exit(LastError);
-	  }
-    #else
-      return FALSE;
-    #endif
-
-    d3d.CurrentTextureFormat = StartFormat;
-
-    // NEW NEW NEW
-    // Note: we are NOT restricted to only one texture format
-    awErr = AwSetTextureFormat(&d3d.TextureFormat[StartFormat].ddsd);
-    GLOBALASSERT(AW_TLE_OK==awErr);
-
-// Create viewport
-	LastError = d3d.lpD3D->CreateViewport(&d3d.lpD3DViewport, NULL);
-	LOGDXERR(LastError);
-
-   if (LastError != D3D_OK)
-     return FALSE;
-
-// Add viewport to desired device
-   LastError = d3d.lpD3DDevice->AddViewport(d3d.lpD3DViewport);
-	LOGDXERR(LastError);
-
-   if (LastError != D3D_OK)
-     return FALSE;
-
-// Set up viewport data
-
-// Note that the viewport is always set to the
-// SDB limits because internal clipping is handled
-// within the main engine code using the VDB
-// system.
-
-   {
-    // Configure viewport here
-    D3DVIEWPORT viewPort;
-	memset(&viewPort, 0, sizeof(D3DVIEWPORT));
-	viewPort.dwSize = sizeof(D3DVIEWPORT);
-	viewPort.dwX = 0; // origins x and y
-	viewPort.dwY = 0;
-	viewPort.dwWidth = ScreenDescriptorBlock.SDB_Width;
-	viewPort.dwHeight = ScreenDescriptorBlock.SDB_Height;
-	viewPort.dvScaleX = D3DVAL((float)viewPort.dwWidth / 2.0); // ????was 2.0
-	viewPort.dvScaleY = D3DVAL((float)viewPort.dwHeight  / 2.0); // ????was 2.0
-    viewPort.dvMaxX = D3DVAL(D3DDivide(D3DVAL(viewPort.dwWidth), 
-                  D3DVAL(2 * viewPort.dvScaleX))); // ????
-    viewPort.dvMaxY = D3DVAL(D3DDivide(D3DVAL(viewPort.dwHeight),
-                  D3DVAL(2 * viewPort.dvScaleY))); // ????
-
-    // And actually set viewport
-    LastError = d3d.lpD3DViewport->SetViewport(&viewPort);
-	LOGDXERR(LastError);
-
-    if (LastError != D3D_OK)
-	  return FALSE;
-   }
-
-// At present we will not set a background material for the
-// viewport, staying instead with the blit code in backdrop.c
-
-// Also, we are not currently adding default lights to the
-// viewport, since the engine lighting system is completely
-// disconnected from the immediate mode lighting module.
-
-// Create execute buffer
-
-  {
-   // Locals for execute buffer
-   D3DEXECUTEBUFFERDESC d3dexDesc;
-
-   // Set up structure to initialise buffer
-   // Note some instructions (e.g. lines) may be smaller than a
-   // triangle, but none can be larger
-   ExBufSize = ((sizeof(D3DINSTRUCTION) + sizeof(D3DTRIANGLE))
-                * MaxD3DInstructions)
-			    + (sizeof(D3DTLVERTEX) * MaxD3DVertices);
-   memset(&d3dexDesc, 0, sizeof(D3DEXECUTEBUFFERDESC));
-   d3dexDesc.dwSize = sizeof(D3DEXECUTEBUFFERDESC);
-   d3dexDesc.dwFlags = D3DDEB_BUFSIZE | D3DDEB_CAPS;
-   d3dexDesc.dwBufferSize = ExBufSize;
-   #if ForceExecuteBufferIntoSystemMemory
-   d3dexDesc.dwCaps = D3DDEBCAPS_SYSTEMMEMORY;
-   #else
-   d3dexDesc.dwCaps = D3DDEBCAPS_MEM; // untested!!!
-   #endif
-
-   // Create buffer
-   LastError = d3d.lpD3DDevice->CreateExecuteBuffer
-            (&d3dexDesc, &lpD3DExecCmdBuf, NULL);
-	LOGDXERR(LastError);
-
-   if (LastError != D3D_OK)
-     return FALSE;
-  }
-
-  // Temporary patch here because the defaults function
-  // buggers palette setting in ScanDrawDirectDraw
-  // for some really obscure reason...
-
-  if (ScanDrawMode != ScanDrawDirectDraw)
-    SetExecuteBufferDefaults();
-
-
-  return TRUE; 	   
-}
-
-#if 1
-
-// Note that error conditions have been removed
-// on the grounds that an early exit will prevent 
-// EndScene being run if this function is used,
-// which screws up all subsequent buffers
-
-BOOL RenderD3DScene(void)
-
-{
-    // Begin scene
-	// My theory is that the functionality of this
-	// thing must invoke a DirectDraw surface lock
-	// on the back buffer without telling you.  However,
-	// we shall see...
-
-	LastError = d3d.lpD3DDevice->BeginScene();
-	LOGDXERR(LastError);
-
-	// if (LastError != D3D_OK)
-	//  return FALSE;
-
-	// Execute buffer
-	LastError = d3d.lpD3DDevice->Execute(lpD3DExecCmdBuf, 
-	          d3d.lpD3DViewport, D3DEXECUTE_UNCLIPPED);
-	LOGDXERR(LastError);
-
-	// if (LastError != D3D_OK)
-	//  return FALSE;
-
-	// End scene
-    LastError = d3d.lpD3DDevice->EndScene();
-	LOGDXERR(LastError);
-
-	// if (LastError != D3D_OK)
-	//  return FALSE;
-
-	   
-
-	return TRUE;
-}
-
-#else
-
-int Time1, Time2, Time3, Time4;
-
-BOOL RenderD3DScene(void)
-
-{
-
-    // Begin scene
-	// My theory is that the functionality of this
-	// thing must invoke a DirectDraw surface lock
-	// on the back buffer without telling you.  However,
-	// we shall see...
-
-    Time1 = GetWindowsTickCount();
-
-	LastError = d3d.lpD3DDevice->BeginScene();
-	LOGDXERR(LastError);
-
-	if (LastError != D3D_OK)
-	  return FALSE;
-
-    Time2 = GetWindowsTickCount();
-
-	// Execute buffer
-	#if 1
-	LastError = d3d.lpD3DDevice->Execute(lpD3DExecCmdBuf, 
-	          d3d.lpD3DViewport, D3DEXECUTE_UNCLIPPED);
-	LOGDXERR(LastError);
-	#else
-	LastError = d3d.lpD3DDevice->Execute(lpD3DExecCmdBuf, 
-	          d3d.lpD3DViewport, D3DEXECUTE_CLIPPED);
-	LOGDXERR(LastError);
-	#endif
-
-	if (LastError != D3D_OK)
-	  return FALSE;
-
-    Time3 = GetWindowsTickCount();
-
-	// End scene
-    LastError = d3d.lpD3DDevice->EndScene();
-	LOGDXERR(LastError);
-
-	if (LastError != D3D_OK)
-	  return FALSE;
-
-    Time4 = GetWindowsTickCount();
-
-	   
-
-	return TRUE;
-
-#endif
-
-
-// With a bit of luck this should automatically
-// release all the Direct3D and  DirectDraw
-// objects using their own functionality.
-// A separate call to finiObjects 
-// is not required.
-// NOTE!!! This depends on Microsoft macros
-// in d3dmacs.h, which is in the win95 directory
-// and must be upgraded from sdk upgrades!!!
-
-void ReleaseDirect3D(void)
-
-{
-    DeallocateAllImages();
-    RELEASE(d3d.lpD3DViewport);
-    RELEASE(d3d.lpD3DDevice);
-	#if SupportZBuffering
-    RELEASE(lpZBuffer);
-	#endif
-    RELEASE(lpDDPal[0]);
-    RELEASE(lpDDSBack);
-    RELEASE(lpDDSPrimary);
-    RELEASE(d3d.lpD3D);
-    RELEASE(lpDD);
-
-	/* release Direct Input stuff */
-	ReleaseDirectKeyboard();
-	ReleaseDirectMouse();
-	ReleaseDirectInput();
-
-	// Reset windows palette entry allocation
-	if ((VideoModeColourDepth == 8) && (WindowMode == WindowModeSubWindow))
-	  {
-	   HDC hdc = GetDC(NULL);
-	   SetSystemPaletteUse(hdc, SYSPAL_STATIC);
-       ReleaseDC(NULL, hdc);
-	  }
-}
-
-// Release all Direct3D objects 
-// but not DirectDraw
-
-void ReleaseDirect3DNotDDOrImages(void)
-
-{
-    RELEASE(d3d.lpD3DViewport);
-    RELEASE(d3d.lpD3DDevice);
-	#if SupportZBuffering
-    RELEASE(lpZBuffer);
-	#endif
-    RELEASE(d3d.lpD3D);
-}
-
-void ReleaseDirect3DNotDD(void)
-
-{
-    DeallocateAllImages();
-    RELEASE(d3d.lpD3DViewport);
-    RELEASE(d3d.lpD3DDevice);
-	#if SupportZBuffering
-    RELEASE(lpZBuffer);
-	#endif
-    RELEASE(d3d.lpD3D);
-}
-
-
-// NOTE!!! These functions depend on Microsoft macros
-// in d3dmacs.h, which is in the win95 directory
-// and must be upgraded from sdk upgrades!!!
-
-
-// ALSO NOTE!!!  All this stuff involves heavy
-// use of floating point assembler in software
-// emulation, probably hand parallelised between
-// the FPU and the processor or something bizarre,
-// implying that this stuff SHOULD NOT be used
-// one anything below a Pentium.
-
-// AND AGAIN!!! Due to the nature of the item 
-// format, the  rasterisation module MUST RECEIVE
-// repeated vertices in the data area.  Tough shit,
-// Microsoft, that's what I say...
-
-void WritePolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-void WriteGouraudPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-void Write2dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-void WriteGouraud2dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-
-void Write3dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
- }
-
-void WriteGouraud3dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-#if SupportZBuffering
-
-// To make effective use of 16 bit z buffers (common
-// on hardware accelerators) we must have a z coordinate 
-// which has been transformed into screen space in such a
-// way that linearity and planearity are preserved, i.e. as
-// if we had done a homogeneous transformation.  For the case 
-// in which the far clipping plane is much further away than the
-// near one (effectively true for 3dc, especially as there is
-// no far clipping plane as such), the appropriate transformation
-// can be reduced to zScreen = (ZWorld - ZNear) / ZWorld.  This
-// calculation is therefore (unfortunately) done for each vertex
-// for z buffered items, taking ZNear to be the current
-// VDB_ClipZ * GlobalScale.
-
-
-void WriteZBPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-void WriteZBGouraudPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-void WriteZB2dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-
-void WriteZBGouraud2dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-void WriteZB3dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-void WriteZBGouraud3dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-#endif
-	
-
-
-void WriteBackdrop2dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-// Same as ordinary 2d textured draw at present, but may e.g.
-// require different texture wrapping behaviour or
-// w values.
-
-void WriteBackdrop3dTexturedPolygonToExecuteBuffer(int* itemptr)
-
-{
-}
-
-
-// Note that this is all dead crap and deeply unoptimised
-// But then... a) it's really only a test and 
-// b) it's for the tools group anyway...
-
-
-void DirectWriteD3DLine(VECTOR2D* LineStart, VECTOR2D* LineEnd, int LineColour)
-
-{
-
-}
-
-
-// reload D3D image -- assumes a base pointer points to the image loaded
-// from disc, in a suitable format
-
-void ReloadImageIntoD3DImmediateSurface(IMAGEHEADER* iheader)
-{
-
-    void *reloadedTexturePtr = ReloadImageIntoD3DTexture(iheader);
-	LOCALASSERT(reloadedTexturePtr != NULL);
-	
-	int gotTextureHandle = GetTextureHandle(iheader);
-	LOCALASSERT(gotTextureHandle == TRUE);
-}
-
-void* ReloadImageIntoD3DTexture(IMAGEHEADER* iheader)
-{
-	// NOTE FIXME BUG HACK
-	// what if the image was a DD surface ??
-	
-	if (iheader->hBackup)
-	{
-		iheader->D3DTexture = AwCreateTexture("rf",AW_TLF_PREVSRC|AW_TLF_COMPRESS);
-		return iheader->D3DTexture;
-	}
-	else return NULL;
-}
-
-int GetTextureHandle(IMAGEHEADER *imageHeaderPtr)
-{
- 	LPDIRECT3DTEXTURE Texture = (LPDIRECT3DTEXTURE) imageHeaderPtr->D3DTexture;
-	
-	LastError = Texture->GetHandle(d3d.lpD3DDevice, (D3DTEXTUREHANDLE*)&(imageHeaderPtr->D3DHandle));
-
-	if (LastError != D3D_OK) return FALSE;
-
-	return TRUE;
-}
-
-
-
-void ReleaseD3DTexture(void* D3DTexture)
-
-{
-	LPDIRECT3DTEXTURE lpTexture;
-
-    lpTexture = (LPDIRECT3DTEXTURE) D3DTexture;
-	RELEASE(lpTexture);
-}
-
-
-#if SupportZBuffering
-
-BOOL CreateD3DZBuffer(void)
-
-{
-    DDSURFACEDESC ddsd;
-
-    // For safety, kill any existing z buffer
-	#if SupportZBuffering
-	RELEASE(lpZBuffer);
-	#endif
-
-    
-	// If we do not have z buffering support
-	// on this driver, give up now
-	if (!(d3d.Driver[d3d.CurrentDriver].ZBuffer))
-	  return FALSE;
-
-    memset(&ddsd,0,sizeof(DDSURFACEDESC));
-    ddsd.dwSize = sizeof(DDSURFACEDESC);
-    ddsd.dwFlags = (DDSD_WIDTH | DDSD_HEIGHT | DDSD_CAPS | DDSD_ZBUFFERBITDEPTH);
-    ddsd.dwHeight = ScreenDescriptorBlock.SDB_Height;
-    ddsd.dwWidth = ScreenDescriptorBlock.SDB_Width;
-    ddsd.ddsCaps.dwCaps = DDSCAPS_ZBUFFER;
-
-	// If we are on a hardware driver, then the z buffer
-	// MUST be in video memory.  Otherwise, it MUST be
-	// in system memory.  I think.
-
-    if (d3d.Driver[d3d.CurrentDriver].Hardware)
-        ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
-    else
-        ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
-
-    // Get the Z buffer bit depth from this driver's 
-    // D3D device description and add it to the description
-	// of the surface we want to create
-
-    devZBufDepth = d3d.Driver[d3d.CurrentDriver].Desc.dwDeviceZBufferBitDepth;
-
-    if (devZBufDepth & DDBD_32)
-        ddsd.dwZBufferBitDepth = 32;
-    else if (devZBufDepth & DDBD_24)
-        ddsd.dwZBufferBitDepth = 24;
-    else if (devZBufDepth & DDBD_16)
-        ddsd.dwZBufferBitDepth = 16;
-    else if (devZBufDepth & DDBD_8)
-        ddsd.dwZBufferBitDepth = 8;
-    else 
-	  {
-	   #if debug
-	   ReleaseDirect3D();
-	   exit(0x511621);
-	   #else
-	   return FALSE;
-	   #endif
-	  }
-
-    // Eight-bit z buffer? Fuck off.
-	if (ddsd.dwZBufferBitDepth == 8)
-	  return FALSE;
-
-    // Now we must actually make the z buffer
-
-    LastError = lpDD->CreateSurface(&ddsd,&lpZBuffer, NULL);
-
-    if (LastError != DD_OK)
-	{
-	   RELEASE(lpZBuffer);
-	   return FALSE;
-	}
-
-    LastError = lpDDSBack->AddAttachedSurface(lpZBuffer);
-
-    if (LastError != DD_OK)
-	{
-	   RELEASE(lpZBuffer);
-	   return FALSE;
-	}
-
-	return TRUE;
-}
-
-#define ZFlushVal 0xffffffff
-
-// At present we are using my z flush function, with the
-// (undocumented) addition of a fill colour for the 
-// actual depth fill, since it seems to work and at least
-// I know what it does.  If it starts failing we'll probably
-// have to go back to invoking the viewport clear through 
-// Direct3D.
-
-void FlushD3DZBuffer(void)
-
-{
-
-	DDBLTFX ddbltfx;
-
-    memset(&ddbltfx, 0, sizeof(ddbltfx));
-	ddbltfx.dwSize = sizeof(ddbltfx);
-	ddbltfx.dwFillDepth	= devZBufDepth;
-	ddbltfx.dwFillColor	= ZFlushVal;
-	
-	/* lets blt a color to the surface*/
-	LastError = lpZBuffer->Blt(NULL, NULL, NULL, DDBLT_DEPTHFILL | DDBLT_WAIT, &ddbltfx);
-
-}
-void SecondFlushD3DZBuffer(void)
-{
-	#if 1
-	{
-	   WriteEndCodeToExecuteBuffer();
-  	   UnlockExecuteBufferAndPrepareForUse();
-	   ExecuteBuffer();
-  	   LockExecuteBuffer();
-	}
-
-	DDBLTFX ddbltfx;
-
-    memset(&ddbltfx, 0, sizeof(ddbltfx));
-	ddbltfx.dwSize = sizeof(ddbltfx);
-	ddbltfx.dwFillDepth	= devZBufDepth;
-	ddbltfx.dwFillColor	= ZFlushVal;
-	
-	/* lets blt a color to the surface*/
-	LastError = lpZBuffer->Blt(NULL, NULL, NULL, DDBLT_DEPTHFILL | DDBLT_WAIT, &ddbltfx);
-	#else
-	extern void ClearZBufferWithPolygon(void);
-	ClearZBufferWithPolygon();
-	#endif
-}
-
-
-#endif
-void FlushZB(void)
-{
-    HRESULT hRes; 
-    D3DRECT d3dRect; 
- 
- 
-    d3dRect.lX1 = 0; 
-    d3dRect.lX2 = 640; 
-    d3dRect.lY1 = 0; 
-    d3dRect.lY2 = 480; 
-    hRes = d3d.lpD3DViewport->Clear(1, &d3dRect, D3DCLEAR_ZBUFFER); 
-
-
-}
-
-
-
-// For extern "C"
-
-};
-
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