bool ALSoftwareGraphicsDriver::Init(int width, int height, int colourDepth, bool windowed, volatile int *loopTimer)
{
_screenWidth = width;
_screenHeight = height;
_colorDepth = colourDepth;
_windowed = windowed;
_loopTimer = loopTimer;
int driver = GetAllegroGfxDriverID(windowed);
set_color_depth(colourDepth);
int actualInitWid = width, actualInitHit = height;
_filter->GetRealResolution(&actualInitWid, &actualInitHit);
if (_initGfxCallback != NULL)
_initGfxCallback(NULL);
if ((IsModeSupported(driver, actualInitWid, actualInitHit, colourDepth)) &&
(set_gfx_mode(driver, actualInitWid, actualInitHit, 0, 0) == 0))
{
clear(screen);
screen = _filter->ScreenInitialized(screen, width, height);
virtualScreen = screen;
#ifdef _WIN32
if (!windowed)
{
memset(&ddrawCaps, 0, sizeof(ddrawCaps));
ddrawCaps.dwSize = sizeof(ddrawCaps);
IDirectDraw2_GetCaps(directdraw, &ddrawCaps, NULL);
if ((ddrawCaps.dwCaps2 & DDCAPS2_PRIMARYGAMMA) == 0) { }
else if (IDirectDrawSurface2_QueryInterface(gfx_directx_primary_surface->id, IID_IDirectDrawGammaControl, (void **)&dxGammaControl) == 0)
{
dxGammaControl->GetGammaRamp(0, &defaultGammaRamp);
}
}
#endif
return true;
}
return false;
}
/**
* Probe the capabilities of the hardware
*
* It is nice to know which features are supported by the hardware so we can
* find ways to optimize our rendering.
*/
static void DirectXGetDDrawCaps(vout_display_t *vd)
{
vout_display_sys_t *sys = vd->sys;
/* This is just an indication of whether or not we'll support overlay,
* but with this test we don't know if we support YUV overlay */
DDCAPS ddcaps;
ZeroMemory(&ddcaps, sizeof(ddcaps));
ddcaps.dwSize = sizeof(ddcaps);
HRESULT hr = IDirectDraw2_GetCaps(sys->ddobject, &ddcaps, NULL);
if (hr != DD_OK) {
msg_Warn(vd, "cannot get caps");
return;
}
/* Determine if the hardware supports overlay surfaces */
const bool has_overlay = ddcaps.dwCaps & DDCAPS_OVERLAY;
/* Determine if the hardware supports overlay surfaces */
const bool has_overlay_fourcc = ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC;
/* Determine if the hardware supports overlay deinterlacing */
const bool can_deinterlace = ddcaps.dwCaps & DDCAPS2_CANFLIPODDEVEN;
/* Determine if the hardware supports colorkeying */
const bool has_color_key = ddcaps.dwCaps & DDCAPS_COLORKEY;
/* Determine if the hardware supports scaling of the overlay surface */
const bool can_stretch = ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH;
/* Determine if the hardware supports color conversion during a blit */
sys->can_blit_fourcc = ddcaps.dwCaps & DDCAPS_BLTFOURCC;
/* Determine overlay source boundary alignment */
const bool align_boundary_src = ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYSRC;
/* Determine overlay destination boundary alignment */
const bool align_boundary_dest = ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYDEST;
/* Determine overlay destination size alignment */
const bool align_size_src = ddcaps.dwCaps & DDCAPS_ALIGNSIZESRC;
/* Determine overlay destination size alignment */
const bool align_size_dest = ddcaps.dwCaps & DDCAPS_ALIGNSIZEDEST;
msg_Dbg(vd, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
"can_deinterlace_overlay=%i colorkey=%i stretch=%i "
"bltfourcc=%i",
has_overlay, has_overlay_fourcc, can_deinterlace,
has_color_key, can_stretch, sys->can_blit_fourcc);
if (align_boundary_src || align_boundary_dest || align_size_src || align_size_dest) {
if (align_boundary_src)
vd->sys->i_align_src_boundary = ddcaps.dwAlignBoundarySrc;
if (align_boundary_dest)
vd->sys->i_align_dest_boundary = ddcaps.dwAlignBoundaryDest;
if (align_size_src)
vd->sys->i_align_src_size = ddcaps.dwAlignSizeSrc;
if (align_size_dest)
vd->sys->i_align_dest_size = ddcaps.dwAlignSizeDest;
msg_Dbg(vd,
"align_boundary_src=%i,%i align_boundary_dest=%i,%i "
"align_size_src=%i,%i align_size_dest=%i,%i",
align_boundary_src, vd->sys->i_align_src_boundary,
align_boundary_dest, vd->sys->i_align_dest_boundary,
align_size_src, vd->sys->i_align_src_size,
align_size_dest, vd->sys->i_align_dest_size);
}
}
