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#ifndef __DMEMMGR_INCLUDED__
#define __DMEMMGR_INCLUDED__
/*
* pointer to video meory
*/
typedef unsigned long FLATPTR;
/*
* Structure for querying extended heap alignment requirements
*/
typedef struct SURFACEALIGNMENT
{
union
{
struct
{
DWORD dwStartAlignment;
DWORD dwPitchAlignment;
DWORD dwReserved1;
DWORD dwReserved2;
} Linear;
struct
{
DWORD dwXAlignment;
DWORD dwYAlignment;
DWORD dwReserved1;
DWORD dwReserved2;
} Rectangular;
};
} SURFACEALIGNMENT_t;
typedef struct SURFACEALIGNMENT __far *LPSURFACEALIGNMENT;
typedef struct HEAPALIGNMENT
{
DWORD dwSize;
DDSCAPS_t ddsCaps; /* Indicates which alignment fields are valid.*/
DWORD dwReserved;
SURFACEALIGNMENT_t ExecuteBuffer; /* Surfaces tagged with DDSCAPS_EXECUTEBUFFER */
SURFACEALIGNMENT_t Overlay; /* Surfaces tagged with DDSCAPS_OVERLAY */
SURFACEALIGNMENT_t Texture; /* Surfaces tagged with DDSCAPS_TEXTURE */
SURFACEALIGNMENT_t ZBuffer; /* Surfaces tagged with DDSCAPS_ZBUFFER */
SURFACEALIGNMENT_t AlphaBuffer; /* Surfaces tagged with DDSCAPS_ALPHA */
SURFACEALIGNMENT_t Offscreen; /* Surfaces tagged with DDSCAPS_OFFSCREENPLAIN*/
SURFACEALIGNMENT_t FlipTarget; /* Surfaces whose bits are potential primaries i.e. back buffers*/
} HEAPALIGNMENT_t;
typedef struct HEAPALIGNMENT __far *LPHEAPALIGNMENT;
/*
* video memory manager structures
*/
typedef struct VMEML
{
struct VMEML __far *next;
FLATPTR ptr;
DWORD size;
} VMEML_t;
typedef struct VMEML __far* LPVMEML;
typedef struct VMEML __far *__far *LPLPVMEML;
typedef struct VMEMR
{
struct VMEMR __far *next;
struct VMEMR __far *prev;
/*
* The pUp, pDown, pLeft and pRight members were removed in DX5
*/
struct VMEMR __far *pUp;
struct VMEMR __far *pDown;
struct VMEMR __far *pLeft;
struct VMEMR __far *pRight;
FLATPTR ptr;
DWORD size;
DWORD x;
DWORD y;
DWORD cx;
DWORD cy;
DWORD flags;
FLATPTR pBits;
} VMEMR_t;
typedef struct VMEMR __far *LPVMEMR;
typedef struct VMEMR __far *__far *LPLPVMEMR;
typedef struct VMEMHEAP
{
DWORD dwFlags;
DWORD stride;
LPVOID freeList;
LPVOID allocList;
DWORD dwTotalSize;
FLATPTR fpGARTLin; /* AGP: GART linear base of heap (app. visible) */
FLATPTR fpGARTDev; /* AGP: GART device base of heap (driver visible) */
DWORD dwCommitedSize; /* AGP: Number of bytes commited to heap */
/*
* Extended alignment data:
* Filled in by DirectDraw in response to a GetHeapAlignment HAL call.
*/
DWORD dwCoalesceCount;
HEAPALIGNMENT_t Alignment;
} VMEMHEAP_t;
typedef VMEMHEAP_t __far *LPVMEMHEAP;
#define VMEMHEAP_LINEAR 0x00000001l /* Heap is linear */
#define VMEMHEAP_RECTANGULAR 0x00000002l /* Heap is rectangular */
#define VMEMHEAP_ALIGNMENT 0x00000004l /* Heap has extended alignment info */
/*
* These legacy DLL exports don't handle nonlocal heaps
*/
extern FLATPTR WINAPI VidMemAlloc(LPVMEMHEAP pvmh, DWORD width, DWORD height);
extern void WINAPI VidMemFree(LPVMEMHEAP pvmh, FLATPTR ptr);
/*
* This DLL export can be used by drivers to allocate aligned surfaces from heaps which
* they have previously exposed to DDRAW.DLL. This function can allocate from nonlocal heaps.
*/
extern FLATPTR WINAPI HeapVidMemAllocAligned(struct VIDMEM* lpVidMem, DWORD dwWidth, DWORD dwHeight, LPSURFACEALIGNMENT lpAlignment , LPLONG lpNewPitch);
#endif
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