halcaps.cpp
来自「老外的一个开源项目」· C++ 代码 · 共 488 行 · 第 1/2 页
CPP
488 行
{
memset( lpddhi, 0, sizeof(DDHALINFO) ); // Clear the DDHALINFO structure
DDHALMODEINFO * ModeTable = NULL;
SA2Video * pSA2Video = (SA2Video *)g_pGPE;
ModeTable = new DDHALMODEINFO();
if (!ModeTable)
{
DEBUGMSG( GPE_ZONE_INIT,(TEXT("Unable to allocate mode table!\r\n")) );
return;
}
ModeTable->dwWidth = pSA2Video->m_pMode->width;
ModeTable->dwHeight = pSA2Video->m_pMode->height;
ModeTable->lPitch = pSA2Video->m_cbScanLineLength;
ModeTable->dwBPP = pSA2Video->m_pMode->Bpp;
if (ModeTable->dwBPP <= 8)
{
ModeTable->wFlags = DDMODEINFO_PALETTIZED;
}
else
{
ModeTable->wFlags = 0;
}
ModeTable->wRefreshRate = pSA2Video->m_pMode->frequency;
switch (ModeTable->dwBPP)
{
case 8:
ModeTable->dwRBitMask = 0;
ModeTable->dwGBitMask = 0;
ModeTable->dwBBitMask = 0;
ModeTable->dwAlphaBitMask = 0;
break;
case 16:
ModeTable->dwRBitMask = 0xF800;
ModeTable->dwGBitMask = 0x07E0;
ModeTable->dwBBitMask = 0x001F;
ModeTable->dwAlphaBitMask = 0;
break;
case 24:
ModeTable->dwRBitMask = 0x00FF0000;
ModeTable->dwGBitMask = 0x0000FF00;
ModeTable->dwBBitMask = 0x000000FF;
ModeTable->dwAlphaBitMask = 0x00000000;
break;
case 32:
ModeTable->dwRBitMask = 0x00FF0000;
ModeTable->dwGBitMask = 0x0000FF00;
ModeTable->dwBBitMask = 0x000000FF;
ModeTable->dwAlphaBitMask = 0x00000000;
break;
}
if ( !g_pVideoMemory ) // in case this is called more than once...
{
unsigned long VideoMemoryStart;
pSA2Video->GetVirtualVideoMemory( &VideoMemoryStart, &g_nVideoMemorySize );
DEBUGMSG( GPE_ZONE_INIT,(TEXT("GetVirtualVideoMemory returned addr=0x%08x size=%d\r\n"), VideoMemoryStart, g_nVideoMemorySize));
g_pVideoMemory = (BYTE*)VideoMemoryStart;
DEBUGMSG( GPE_ZONE_INIT,(TEXT("gpVidMem=%08x\r\n"), g_pVideoMemory ));
}
lpddhi->dwSize = sizeof(DDHALINFO);
lpddhi->lpDDCallbacks = &cbDDCallbacks;
lpddhi->lpDDSurfaceCallbacks = &cbDDSurfaceCallbacks;
lpddhi->lpDDPaletteCallbacks = &cbDDPaletteCallbacks;
lpddhi->lpDDExeBufCallbacks = &cbDDExeBufCallbacks;
lpddhi->GetDriverInfo = HalGetDriverInfo;
lpddhi->vmiData.fpPrimary = (unsigned long)(g_pVideoMemory) + g_pDDrawPrimarySurface->OffsetInVideoMemory();
lpddhi->vmiData.dwFlags = 0;
lpddhi->vmiData.dwDisplayWidth = SCREEN_WIDTH;
lpddhi->vmiData.dwDisplayHeight = SCREEN_HEIGHT;
lpddhi->vmiData.lDisplayPitch = ModeTable->lPitch;
DEBUGMSG( GPE_ZONE_INIT,(TEXT("stride: %d\r\n"), lpddhi->vmiData.lDisplayPitch ));
lpddhi->vmiData.ddpfDisplay.dwSize = sizeof(DDPIXELFORMAT);
lpddhi->vmiData.ddpfDisplay.dwFourCC = 0; // (FOURCC code)
if (ModeTable->wFlags & DDMODEINFO_PALETTIZED)
{
lpddhi->vmiData.ddpfDisplay.dwFlags = DDPF_RGB | DDPF_PALETTEINDEXED8;
}
else
{
lpddhi->vmiData.ddpfDisplay.dwFlags = DDPF_RGB;
}
lpddhi->vmiData.ddpfDisplay.dwRBitMask = ModeTable->dwRBitMask;
lpddhi->vmiData.ddpfDisplay.dwGBitMask = ModeTable->dwGBitMask;
lpddhi->vmiData.ddpfDisplay.dwBBitMask = ModeTable->dwBBitMask;
lpddhi->vmiData.ddpfDisplay.dwRGBBitCount = ModeTable->dwBPP;
lpddhi->vmiData.dwOffscreenAlign = 4; // byte alignment for offscreen surfaces
lpddhi->vmiData.dwOverlayAlign = 4; // byte alignment for overlays
lpddhi->vmiData.dwTextureAlign = 0; // byte alignment for textures
lpddhi->vmiData.dwZBufferAlign = 0; // byte alignment for z buffers
lpddhi->vmiData.dwAlphaAlign = 4; // byte alignment for alpha
lpddhi->vmiData.dwNumHeaps = 0; // number of memory heaps in vmList
lpddhi->vmiData.pvmList = (LPVIDMEM)NULL; // array of heaps
// hw specific caps:
lpddhi->ddCaps.dwSize = sizeof(DDCAPS); // size of the DDDRIVERCAPS structure
lpddhi->ddCaps.dwCaps = // driver specific capabilities
// DDCAPS_3D | // Display hardware has 3D acceleration
DDCAPS_BLT | // Display hardware is capable of blt operations
// DDCAPS_BLTQUEUE | // Display hardware is capable of asynchronous blt operations
// DDCAPS_BLTFOURCC | // Display hardware is capable of color space conversions during the blt operation
// DDCAPS_BLTSTRETCH | // Display hardware is capable of stretching during blt operations
// DDCAPS_GDI | // Display hardware is shared with GDI
// DDCAPS_OVERLAY | // Display hardware can overlay
// DDCAPS_OVERLAYCANTCLIP | // Set if display hardware supports overlays but can not clip them
// DDCAPS_OVERLAYFOURCC | // overlay hardware is capable of color space conversions
// DDCAPS_OVERLAYSTRETCH | // Indicates that stretching can be done by the overlay hardware
// DDCAPS_PALETTE | // unique DirectDrawPalettes can be created for DirectDrawSurfaces
// DDCAPS_PALETTEVSYNC | // palette changes can be syncd with the vertical
// DDCAPS_READSCANLINE | // Display hardware can return the current scan line
// DDCAPS_STEREOVIEW | // Display hardware has stereo vision capabilities
// DDCAPS_VBI | // Display hardware is capable of generating a vertical blank interrupt
// DDCAPS_ZBLTS | // Supports the use of z buffers with blt operations
// DDCAPS_ZOVERLAYS | // Supports Z Ordering of overlays
// DDCAPS_COLORKEY | // Supports color key
// DDCAPS_ALPHA | // Supports alpha surfaces
// DDCAPS_COLORKEYHWASSIST | // colorkey is hardware assisted
// DDCAPS_NOHARDWARE | // no hardware support at all
DDCAPS_BLTCOLORFILL | // Display hardware is capable of color fill with bltter
// DDCAPS_BANKSWITCHED | // Display hardware is bank switched
// DDCAPS_BLTDEPTHFILL | // Display hardware is capable of depth filling Z-buffers with bltter
// DDCAPS_CANCLIP | // Display hardware is capable of clipping while bltting
// DDCAPS_CANCLIPSTRETCHED | // Display hardware is capable of clipping while stretch bltting
DDCAPS_CANBLTSYSMEM | // Display hardware is capable of bltting to or from system memory
0;
lpddhi->ddCaps.dwCaps2 = // more driver specific capabilities
// DDCAPS2_CERTIFIED // Display hardware is certified
DDCAPS2_NO2DDURING3DSCENE | // Driver cannot interleave 2D & 3D operations
// DDCAPS2_VIDEOPORT | // Display hardware contains a video port
// DDCAPS2_AUTOFLIPOVERLAY | // automatic doubled buffered display of video port
// DDCAPS2_CANBOBINTERLEAVED | // Overlay can display each field of interlaced data
// DDCAPS2_CANBOBNONINTERLEAVED | // As above but for non-interleaved data
// DDCAPS2_COLORCONTROLOVERLAY | // The overlay surface contains color controls
// DDCAPS2_COLORCONTROLPRIMARY | // The primary surface contains color controls
// DDCAPS2_CANDROPZ16BIT | // RGBZ -> RGB supported for 16:16 RGB:Z
// DDCAPS2_NONLOCALVIDMEM | // Driver supports non-local video memory
// DDCAPS2_NONLOCALVIDMEMCAPS | // Dirver supports non-local video memory but has different capabilities
// DDCAPS2_NOPAGELOCKREQUIRED | // Driver neither requires nor prefers surfaces to be pagelocked
DDCAPS2_WIDESURFACES | // Driver can create surfaces which are wider than the primary surface
// DDCAPS2_CANFLIPODDEVEN | // Driver supports bob without using a video port
// DDCAPS2_CANBOBHARDWARE | // Driver supports bob using hardware
// DDCAPS2_COPYFOURCC | // Driver supports bltting any FOURCC surface to another surface of the same FOURCC
0 ;
lpddhi->ddCaps.dwCKeyCaps = // color key capabilities of the surface
// DDCKEYCAPS_SRCBLT | // Hardware can use colorkey (cf source only)
// ..for transparent blts
0;
lpddhi->ddCaps.dwFXCaps= // driver specific stretching and effects capabilites
DDFXCAPS_BLTMIRRORUPDOWN | // Supports vertical inversion Blts
DDFXCAPS_BLTSTRETCHY | // Supports stretch blts in the Y-direction
DDFXCAPS_BLTSHRINKY | // Supports shrink blts in the Y-direction
DDFXCAPS_BLTSTRETCHX | // Supports stretch blts in the X-direction
DDFXCAPS_BLTSHRINKX | // Supports shrink blts in the X-direction
0;
lpddhi->ddCaps.dwPalCaps=0; // palette capabilities
if (ModeTable->dwBPP == 8)
{
lpddhi->ddCaps.dwPalCaps= // palette capabilities
// DDPCAPS_1BIT | // Simple 1-bit palette
// DDPCAPS_2BIT | // Simple 2-bit palette
// DDPCAPS_4BIT | // Simple 4-bit palette
// DDPCAPS_8BITENTRIES | // Palette indexes into 8 bit target
DDPCAPS_8BIT | // Simple 8-bit palette
DDPCAPS_PRIMARYSURFACE | // Palette is attached to primary surface
// DDPCAPS_PRIMARYSURFACELEFT | // Palette is attached to left-eye primary surface
DDPCAPS_ALLOW256 | // All 256 entries may be set
0;
}
lpddhi->ddCaps.dwSVCaps=0; // Stereo vision capabilities (none)
lpddhi->ddCaps.dwAlphaBltConstBitDepths = 0;// No Alpha Blt's
lpddhi->ddCaps.dwAlphaBltPixelBitDepths = 0;
lpddhi->ddCaps.dwAlphaBltSurfaceBitDepths = 0;
lpddhi->ddCaps.dwZBufferBitDepths=0; // No z buffer
lpddhi->ddCaps.dwVidMemTotal = g_nVideoMemorySize; // total amount of video memory
lpddhi->ddCaps.dwVidMemFree = g_nVideoMemorySize; // amount of free video memory
// maximum number of visible overlays
lpddhi->ddCaps.dwCurrVisibleOverlays = 0; // current number of visible overlays
lpddhi->ddCaps.dwNumFourCCCodes = 0; // number of four cc codes
lpddhi->ddCaps.dwAlignBoundarySrc = 0; // source rectangle alignment
lpddhi->ddCaps.dwAlignSizeSrc = 0; // source rectangle byte size
lpddhi->ddCaps.dwAlignStrideAlign = 0; // stride alignment
lpddhi->ddCaps.ddsCaps.dwCaps= // DDSCAPS structure has all the general capabilities
// DDSCAPS_ALPHA | // Can create alpha-only surfaces
DDSCAPS_BACKBUFFER | // Can create backbuffer surfaces
// DDSCAPS_COMPLEX | // Can create complex surfaces
// DDSCAPS_FLIP | // Can flip between surfaces
DDSCAPS_FRONTBUFFER | // Can create front-buffer surfaces
DDSCAPS_OFFSCREENPLAIN | // Can create off-screen bitmaps
// DDSCAPS_OVERLAY | // Can create overlay surfaces
DDSCAPS_PALETTE | // Has one palette ???
DDSCAPS_PRIMARYSURFACE | // Has a primary surface
// DDSCAPS_PRIMARYSURFACELEFT | // Has a left-eye primary surface
// DDSCAPS_TEXTURE | // Supports texture surrfaces
DDSCAPS_SYSTEMMEMORY | // Surfaces are in system memory
// DDSCAPS_VIDEOMEMORY | // Surfaces are in video memory
DDSCAPS_VISIBLE | // Changes are instant ???
// DDSCAPS_ZBUFFER | // Can create (pseudo) Z buffer
// DDSCAPS_EXECUTEBUFFER | // Can create execute buffer
// DDSCAPS_3DDEVICE | // Surfaces can be 3d targets
// DDSCAPS_WRITEONLY | // Can create write-only surfaces
// DDSCAPS_ALLOCONLOAD | // Can create alloconload surfaces
// DDSCAPS_MIPMAP | // Can create mipmap
0;
SETROPBIT(lpddhi->ddCaps.dwRops,SRCCOPY); // Set bits for ROPS supported
SETROPBIT(lpddhi->ddCaps.dwRops,PATCOPY);
SETROPBIT(lpddhi->ddCaps.dwRops,BLACKNESS);
SETROPBIT(lpddhi->ddCaps.dwRops,WHITENESS);
lpddhi->dwMonitorFrequency = ModeTable->wRefreshRate; // monitor frequency in current mode
lpddhi->dwModeIndex = 0; // current mode: index into array
lpddhi->lpdwFourCC = 0; // fourcc codes supported
lpddhi->dwNumModes = 1; // number of modes supported
lpddhi->lpModeInfo = ModeTable; // mode information
lpddhi->dwFlags = DDHALINFO_MODEXILLEGAL | // create flags
DDHALINFO_GETDRIVERINFOSET |
0;
lpddhi->lpPDevice = (LPVOID)0; // physical device ptr
lpddhi->hInstance = (DWORD)0; // instance handle of driver
}
#endif // DD_ENABLE
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