HRESULT CheckDeviceFormat	(	LPD3D9_DRIVERCAPS	pDriverCaps,
		D3DFORMAT	AdapterFormat,
		DWORD	Usage,
		D3DRESOURCETYPE	RType,
		D3DFORMAT	CheckFormat
	)
Definition at line 326 of file format.c.
Referenced by DECLARE_INTERFACE_(), and IDirect3D9Impl_CheckDeviceFormat().
{
    const DWORD NumFormatOps = pDriverCaps->NumSupportedFormatOps;
    DWORD NonCompatibleOperations = 0, MustSupportOperations = 0;
    BOOL bSupportedWithAutogen = FALSE;
    DWORD FormatOpIndex;

    if (FALSE == IsSupportedFormatOp(pDriverCaps, AdapterFormat, D3DFORMAT_OP_DISPLAYMODE | D3DFORMAT_OP_3DACCELERATION))
    {
        return D3DERR_NOTAVAILABLE;
    }

    /* Check for driver auto generated mip map support if requested */
    if ((Usage & (D3DUSAGE_AUTOGENMIPMAP)) != 0)
    {
        switch (RType)
        {
        case D3DRTYPE_TEXTURE:
            if ((pDriverCaps->DriverCaps9.TextureCaps & D3DPTEXTURECAPS_MIPMAP) == 0)
                return D3DERR_NOTAVAILABLE;

            break;

        case D3DRTYPE_VOLUME:
        case D3DRTYPE_VOLUMETEXTURE:
            if ((pDriverCaps->DriverCaps9.TextureCaps & D3DPTEXTURECAPS_MIPVOLUMEMAP) == 0)
                return D3DERR_NOTAVAILABLE;

            break;

        case D3DRTYPE_CUBETEXTURE:
            if ((pDriverCaps->DriverCaps9.TextureCaps & D3DPTEXTURECAPS_MIPCUBEMAP) == 0)
                return D3DERR_NOTAVAILABLE;

            break;

        default:
            /* Do nothing */
            break;
        }

        MustSupportOperations |= D3DFORMAT_OP_AUTOGENMIPMAP;
    }

    /* Translate from RType and Usage parameters to FormatOps */
    switch (RType)
    {
    case D3DRTYPE_TEXTURE:
        MustSupportOperations |= D3DFORMAT_OP_TEXTURE;
        break;

    case D3DRTYPE_VOLUME:
    case D3DRTYPE_VOLUMETEXTURE:
        MustSupportOperations |= D3DFORMAT_OP_VOLUMETEXTURE;
        break;

    case D3DRTYPE_CUBETEXTURE:
        MustSupportOperations |= D3DFORMAT_OP_CUBETEXTURE;
        break;

    default:
        /* Do nothing */
        break;
    }

    if (Usage == 0 && RType == D3DRTYPE_SURFACE)
    {
        MustSupportOperations |= D3DFORMAT_OP_OFFSCREENPLAIN;
    }

    if ((Usage & D3DUSAGE_DEPTHSTENCIL) != 0)
    {
        MustSupportOperations |= D3DFORMAT_OP_ZSTENCIL;
    }

    if ((Usage & D3DUSAGE_DMAP) != 0)
    {
        MustSupportOperations |= D3DFORMAT_OP_DMAP;
    }

    if ((Usage & D3DUSAGE_QUERY_LEGACYBUMPMAP) != 0)
    {
        MustSupportOperations |= D3DFORMAT_OP_BUMPMAP;
    }

    if ((Usage & D3DUSAGE_QUERY_SRGBREAD) != 0)
    {
        MustSupportOperations |= D3DFORMAT_OP_SRGBREAD;
    }

    if ((Usage & D3DUSAGE_QUERY_SRGBWRITE) != 0)
    {
        MustSupportOperations |= D3DFORMAT_OP_SRGBWRITE;
    }

    if ((Usage & D3DUSAGE_QUERY_VERTEXTEXTURE) != 0)
    {
        MustSupportOperations |= D3DFORMAT_OP_VERTEXTEXTURE;
    }

    CheckFormat = GetStencilFormat(pDriverCaps, CheckFormat);

    if ((Usage & D3DUSAGE_RENDERTARGET) != 0)
    {
        if (AdapterFormat == CheckFormat)
        {
            MustSupportOperations |= D3DFORMAT_OP_SAME_FORMAT_RENDERTARGET;
        }
        else
        {
            D3DFORMAT NonAlphaAdapterFormat;
            D3DFORMAT NonAlphaCheckFormat;

            NonAlphaAdapterFormat = RemoveAlphaChannel(AdapterFormat);
            NonAlphaCheckFormat = RemoveAlphaChannel(CheckFormat);

            if (NonAlphaAdapterFormat == NonAlphaCheckFormat &&
                NonAlphaCheckFormat != D3DFMT_UNKNOWN)
            {
                MustSupportOperations |= D3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
            }
            else
            {
                MustSupportOperations |= D3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
            }
        }
    }

    if ((Usage & D3DUSAGE_QUERY_FILTER) != 0)
    {
        NonCompatibleOperations |= D3DFORMAT_OP_OFFSCREENPLAIN;
    }

    if ((Usage & D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING) != 0)
    {
        NonCompatibleOperations |= D3DFORMAT_OP_NOALPHABLEND;
    }

    if ((Usage & D3DUSAGE_QUERY_WRAPANDMIP) != 0)
    {
        NonCompatibleOperations |= D3DFORMAT_OP_NOTEXCOORDWRAPNORMIP;
    }

    for (FormatOpIndex = 0; FormatOpIndex < NumFormatOps; FormatOpIndex++)
    {
        DWORD dwOperations;
        LPDDSURFACEDESC pSurfaceDesc = &pDriverCaps->pSupportedFormatOps[FormatOpIndex];

        if (pSurfaceDesc->ddpfPixelFormat.dwFourCC != CheckFormat)
            continue;

        dwOperations = pSurfaceDesc->ddpfPixelFormat.dwOperations;

        if ((dwOperations & NonCompatibleOperations) != 0)
            continue;

        if ((dwOperations & MustSupportOperations) == MustSupportOperations)
            return D3D_OK;
        
        if (((dwOperations & MustSupportOperations) | D3DFORMAT_OP_AUTOGENMIPMAP) == MustSupportOperations)
            bSupportedWithAutogen = TRUE;
    }

    if (TRUE == bSupportedWithAutogen)
        return D3DOK_NOAUTOGEN;

    return D3DERR_NOTAVAILABLE;
}
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