/* Updates missing video mode params with current values,
* Checks if resulting mode is liked by the host and fits into VRAM.
* Returns TRUE if resulting mode could be used.
*/
static BOOLEAN
VBoxMPValidateVideoModeParams(PVBOXMP_DEVEXT pExt, uint32_t iDisplay, uint32_t &xres, uint32_t &yres, uint32_t &bpp)
{
/* Make sure all important video mode values are set */
if (VBoxMPIsStartingUp(pExt, iDisplay))
{
/* Use stored custom values only if nothing was read from host. */
xres = xres ? xres:g_CustomVideoModes[iDisplay].VisScreenWidth;
yres = yres ? yres:g_CustomVideoModes[iDisplay].VisScreenHeight;
bpp = bpp ? bpp :g_CustomVideoModes[iDisplay].BitsPerPlane;
}
else
{
/* Use current values for field which weren't read from host. */
#ifdef VBOX_XPDM_MINIPORT
xres = xres ? xres:pExt->CurrentModeWidth;
yres = yres ? yres:pExt->CurrentModeHeight;
bpp = bpp ? bpp :pExt->CurrentModeBPP;
#else
PVBOXWDDM_ALLOC_DATA pAllocData = pExt->aSources[iDisplay].pPrimaryAllocation ?
&pExt->aSources[iDisplay].pPrimaryAllocation->AllocData
: &pExt->aSources[iDisplay].AllocData;
xres = xres ? xres:pAllocData->SurfDesc.width;
yres = yres ? yres:pAllocData->SurfDesc.height;
/* VBox WDDM driver does not allow 24 modes since OS could choose the 24bit mode as default in that case,
* the pExt->aSources[iDisplay].AllocData.SurfDesc.bpp could be initially 24 though,
* i.e. when driver occurs the current mode on driver load via DxgkCbAcquirePostDisplayOwnership
* and until driver reports the supported modes
* This is true for Win8 Display-Only driver currently since DxgkCbAcquirePostDisplayOwnership is only used by it
*
* This is why we need to adjust the current mode bpp to the value we actually report as supported */
bpp = bpp ? bpp : VBoxMPAdjustBpp(pAllocData->SurfDesc.bpp);
#endif
}
/* Round down width to be a multiple of 8 if necessary */
if (!VBoxCommonFromDeviceExt(pExt)->fAnyX)
{
xres &= 0xFFF8;
}
/* We always need bpp to be set */
if (!bpp)
{
bpp=32;
}
if (!VBoxMPValidateVideoModeParamsGuest(pExt, iDisplay, xres, yres, bpp))
{
WARN(("GUEST does not like special mode %dx%d:%d for display %d", xres, yres, bpp, iDisplay));
return FALSE;
}
/* Check if host likes this mode */
if (!VBoxLikesVideoMode(iDisplay, xres, yres, bpp))
{
WARN_NOBP(("HOST does not like special mode %dx%d:%d for display %d", xres, yres, bpp, iDisplay));
return FALSE;
}
#ifdef VBOX_XPDM_MINIPORT
ULONG vramSize = pExt->pPrimary->u.primary.ulMaxFrameBufferSize;
#else
ULONG vramSize = vboxWddmVramCpuVisibleSegmentSize(pExt);
vramSize /= pExt->u.primary.commonInfo.cDisplays;
# ifdef VBOX_WDDM_WIN8
if (!g_VBoxDisplayOnly)
# endif
{
/* at least two surfaces will be needed: primary & shadow */
vramSize /= 2;
}
vramSize &= ~PAGE_OFFSET_MASK;
#endif
/* Check that values are valid and mode fits into VRAM */
if (!xres || !yres
|| !((bpp == 16)
#ifdef VBOX_WITH_8BPP_MODES
|| (bpp == 8)
#endif
|| (bpp == 24)
|| (bpp == 32)))
{
LOG(("invalid params for special mode %dx%d:%d", xres, yres, bpp));
return FALSE;
}
if ((xres * yres * (bpp / 8) >= vramSize))
{
/* Store values of last reported release log message to avoid log flooding. */
static uint32_t s_xresNoVRAM=0, s_yresNoVRAM=0, s_bppNoVRAM=0;
LOG(("not enough VRAM for video mode %dx%dx%dbpp. Available: %d bytes. Required: more than %d bytes.",
xres, yres, bpp, vramSize, xres * yres * (bpp / 8)));
s_xresNoVRAM = xres;
s_yresNoVRAM = yres;
s_bppNoVRAM = bpp;
return FALSE;
}
return TRUE;
}
/* Updates missing video mode params with current values,
* Checks if resulting mode is liked by the host and fits into VRAM.
* Returns TRUE if resulting mode could be used.
*/
static BOOLEAN
VBoxMPValidateVideoModeParams(PVBOXMP_DEVEXT pExt, uint32_t iDisplay, uint32_t &xres, uint32_t &yres, uint32_t &bpp)
{
/* Make sure all important video mode values are set */
if (VBoxMPIsStartingUp(pExt, iDisplay))
{
/* Use stored custom values only if nothing was read from host. */
xres = xres ? xres:g_CustomVideoModes[iDisplay].VisScreenWidth;
yres = yres ? yres:g_CustomVideoModes[iDisplay].VisScreenHeight;
bpp = bpp ? bpp :g_CustomVideoModes[iDisplay].BitsPerPlane;
}
else
{
/* Use current values for field which weren't read from host. */
#ifdef VBOX_XPDM_MINIPORT
xres = xres ? xres:pExt->CurrentModeWidth;
yres = yres ? yres:pExt->CurrentModeHeight;
bpp = bpp ? bpp :pExt->CurrentModeBPP;
#else
xres = xres ? xres:pExt->aSources[iDisplay].pPrimaryAllocation->SurfDesc.width;
yres = yres ? yres:pExt->aSources[iDisplay].pPrimaryAllocation->SurfDesc.height;
bpp = bpp ? bpp :pExt->aSources[iDisplay].pPrimaryAllocation->SurfDesc.bpp;
#endif
}
/* Round down width to be a multiple of 8 if necessary */
if (!pExt->fAnyX)
{
xres &= 0xFFF8;
}
/* We always need bpp to be set */
if (!bpp)
{
bpp=32;
}
if (!VBoxMPValidateVideoModeParamsGuest(pExt, iDisplay, xres, yres, bpp))
return FALSE;
/* Check if host likes this mode */
if (!VBoxLikesVideoMode(iDisplay, xres, yres, bpp))
{
WARN_NOBP(("host does not like special mode %dx%d:%d for display %d", xres, yres, bpp, iDisplay));
return FALSE;
}
#ifdef VBOX_XPDM_MINIPORT
ULONG vramSize = pExt->pPrimary->u.primary.ulMaxFrameBufferSize;
#else
ULONG vramSize = vboxWddmVramCpuVisibleSegmentSize(pExt);
/* at least two surfaces will be needed: primary & shadow */
vramSize /= 2 * pExt->u.primary.commonInfo.cDisplays;
#endif
/* Check that values are valid and mode fits into VRAM */
if (!xres || !yres
|| !((bpp == 16)
#ifdef VBOX_WITH_8BPP_MODES
|| (bpp == 8)
#endif
|| (bpp == 24)
|| (bpp == 32)))
{
LOG(("invalid params for special mode %dx%d:%d", xres, yres, bpp));
return FALSE;
}
if ((xres * yres * (bpp / 8) >= vramSize))
{
/* Store values of last reported release log message to avoid log flooding. */
static uint32_t s_xresNoVRAM=0, s_yresNoVRAM=0, s_bppNoVRAM=0;
LOG(("not enough VRAM for video mode %dx%dx%dbpp. Available: %d bytes. Required: more than %d bytes.",
xres, yres, bpp, vramSize, xres * yres * (bpp / 8)));
s_xresNoVRAM = xres;
s_yresNoVRAM = yres;
s_bppNoVRAM = bpp;
return FALSE;
}
return TRUE;
}
