private void SetScanoutRegion(int buffer)
{
LinuxWindowInfo wnd = WindowInfo as LinuxWindowInfo;
if (wnd == null)
{
throw new InvalidOperationException();
}
unsafe
{
ModeInfo *mode = wnd.DisplayDevice.pConnector->modes;
int connector_id = wnd.DisplayDevice.pConnector->connector_id;
int crtc_id = wnd.DisplayDevice.Id;
int x = 0;
int y = 0;
int connector_count = 1;
int ret = Drm.ModeSetCrtc(fd, crtc_id, buffer, x, y,
&connector_id, connector_count, mode);
if (ret != 0)
{
Debug.Print("[KMS] Drm.ModeSetCrtc{0}, {1}, {2}, {3}, {4:x}, {5}, {6:x}) failed. Error: {7}",
fd, crtc_id, buffer, x, y, (IntPtr)connector_id, connector_count, (IntPtr)mode, ret);
}
}
}
protected override void Dispose(bool manual)
{
if (manual)
{
// Reset the scanout region
LinuxWindowInfo wnd = WindowInfo as LinuxWindowInfo;
if (wnd != null)
{
unsafe
{
int connector_id = wnd.DisplayDevice.pConnector->connector_id;
ModeInfo mode = wnd.DisplayDevice.OriginalMode;
Drm.ModeSetCrtc(fd,
wnd.DisplayDevice.pCrtc->crtc_id,
wnd.DisplayDevice.pCrtc->buffer_id,
wnd.DisplayDevice.pCrtc->x,
wnd.DisplayDevice.pCrtc->y,
&connector_id,
1,
&mode);
}
}
}
base.Dispose(manual);
}
private unsafe static ModeEncoder *GetEncoder(int fd, ModeConnector *c)
{
ModeEncoder *encoder = null;
for (int i = 0; i < c->count_encoders && encoder == null; i++)
{
ModeEncoder *e = (ModeEncoder *)Drm.ModeGetEncoder(
fd, *(c->encoders + i));
if (e != null)
{
if (e->encoder_id == c->encoder_id)
{
encoder = e;
}
else
{
Drm.ModeFreeEncoder((IntPtr)e);
}
}
}
if (encoder != null)
{
Debug.Print("[KMS] Encoder {0} found for connector {1}",
encoder->encoder_id, c->connector_id);
}
else
{
Debug.Print("[KMS] Failed to find encoder for connector {0}", c->connector_id);
}
return(encoder);
}
private void SetCursor(MouseCursor cursor)
{
BufferObject bo = default(BufferObject);
if (cursor == MouseCursor.Default)
{
bo = cursor_default;
}
else if (cursor == MouseCursor.Empty)
{
bo = cursor_empty;
}
else
{
if (cursor_custom != BufferObject.Zero)
{
cursor_custom.Dispose();
}
cursor_custom = CreateCursor(window.BufferManager, cursor);
bo = cursor_custom;
}
// If we failed to create a proper cursor, try falling back
// to the empty cursor. We do not want to crash here!
if (bo == BufferObject.Zero)
{
bo = cursor_empty;
}
if (bo != BufferObject.Zero)
{
Drm.SetCursor(window.FD, window.DisplayDevice.Id,
bo.Handle, bo.Width, bo.Height, cursor.X, cursor.Y);
}
}
/// \internal
/// <summary>
/// Queries the specified GPU for connected displays and, optionally,
/// returns the list of displays.
/// </summary>
/// <returns><c>true</c>, if at least one display is connected, <c>false</c> otherwise.</returns>
/// <param name="fd">The fd for the GPU to query, obtained through open("/dev/dri/card0").</param>
/// <param name="displays">
/// If not null, this will contain a list <see cref="LinuxDisplay"/> instances,
/// one for each connected display.
/// </param>
internal static bool QueryDisplays(int fd, List <LinuxDisplay> displays)
{
unsafe
{
bool has_displays = false;
if (displays != null)
{
displays.Clear();
}
ModeRes *resources = (ModeRes *)Drm.ModeGetResources(fd);
if (resources == null)
{
Debug.Print("[KMS] Drm.ModeGetResources failed.");
return(false);
}
Debug.Print("[KMS] DRM found {0} connectors", resources->count_connectors);
// Search for a valid connector
ModeConnector *connector = null;
for (int i = 0; i < resources->count_connectors; i++)
{
connector = (ModeConnector *)Drm.ModeGetConnector(fd,
*(resources->connectors + i));
if (connector != null)
{
bool success = false;
LinuxDisplay display = null;
try
{
if (connector->connection == ModeConnection.Connected &&
connector->count_modes > 0)
{
success = QueryDisplay(fd, connector, out display);
has_displays |= success;
}
}
catch (Exception e)
{
Debug.Print("[KMS] Failed to add display. Error: {0}", e);
}
if (success && displays != null)
{
displays.Add(display);
}
else
{
Drm.ModeFreeConnector((IntPtr)connector);
connector = null;
}
}
}
return(has_displays);
}
}
public override bool TryRestoreResolution(DisplayDevice device)
{
unsafe
{
LinuxDisplay display = (LinuxDisplay)device.Id;
ModeInfo mode = display.OriginalMode;
int connector_id = display.pConnector->connector_id;
return(Drm.ModeSetCrtc(FD, display.Id, 0, 0, 0,
&connector_id, 1, &mode) == 0);
}
}
private static void HandleDestroyFB(BufferObject bo, IntPtr data)
{
IntPtr gbm = bo.Device;
int fb = data.ToInt32();
Debug.Print("[KMS] Destroying framebuffer {0}", fb);
if (fb != 0)
{
Drm.ModeRmFB(Gbm.DeviceGetFD(gbm), fb);
}
}
private void UpdateCursor()
{
Point p = new Point(
(int)Math.Round(CursorPosition.X + CursorOffset.X),
(int)Math.Round(CursorPosition.Y + CursorOffset.Y));
DisplayDevice display = DisplayDevice.FromPoint(p.X, p.Y) ?? DisplayDevice.Default;
if (display != null)
{
LinuxDisplay d = (LinuxDisplay)display.Id;
Drm.MoveCursor(d.FD, d.Id, p.X, p.Y);
}
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
Debug.Print("[KMS] Destroying window {0}.", window.Handle);
Drm.SetCursor(window.FD, window.DisplayDevice.Id, 0, 0, 0, 0, 0);
window.Dispose();
Gbm.DestroySurface(window.Handle);
}
else
{
Debug.Print("[KMS] {0} leaked. Did you forget to call Dispose()?", GetType().FullName);
}
}
public override bool TryChangeResolution(DisplayDevice device, DisplayResolution resolution)
{
unsafe
{
LinuxDisplay display = (LinuxDisplay)device.Id;
ModeInfo * mode = GetModeInfo(display, resolution);
int connector_id = display.pConnector->connector_id;
if (mode != null)
{
return(Drm.ModeSetCrtc(FD, display.Id, 0, 0, 0,
&connector_id, 1, mode) == 0);
}
return(false);
}
}
private int GetFramebuffer(BufferObject bo)
{
if (bo == BufferObject.Zero)
{
goto fail;
}
int bo_handle = bo.Handle;
if (bo_handle == 0)
{
Debug.Print("[KMS] Gbm.BOGetHandle({0:x}) failed.", bo);
goto fail;
}
int width = bo.Width;
int height = bo.Height;
int bpp = Mode.ColorFormat.BitsPerPixel;
int depth = Mode.Depth;
int stride = bo.Stride;
if (width == 0 || height == 0 || bpp == 0)
{
Debug.Print("[KMS] Invalid framebuffer format: {0}x{1} {2} {3} {4}",
width, height, stride, bpp, depth);
goto fail;
}
int buffer;
int ret = Drm.ModeAddFB(
fd, width, height,
(byte)depth, (byte)bpp, stride, bo_handle,
out buffer);
if (ret != 0)
{
Debug.Print("[KMS] Drm.ModeAddFB({0}, {1}, {2}, {3}, {4}, {5}, {6}) failed. Error: {7}",
fd, width, height, depth, bpp, stride, bo_handle, ret);
goto fail;
}
bo.SetUserData((IntPtr)buffer, DestroyFB);
return(buffer);
fail:
Debug.Print("[Error] Failed to create framebuffer.");
return(-1);
}
private unsafe static ModeCrtc *GetCrtc(int fd, ModeEncoder *encoder)
{
ModeCrtc *crtc = (ModeCrtc *)Drm.ModeGetCrtc(fd, encoder->crtc_id);
if (crtc != null)
{
Debug.Print("[KMS] CRTC {0} found for encoder {1}",
encoder->crtc_id, encoder->encoder_id);
}
else
{
Debug.Print("[KMS] Failed to find crtc {0} for encoder {1}",
encoder->crtc_id, encoder->encoder_id);
}
return(crtc);
}
private void WaitFlip(bool block)
{
PollFD fds = new PollFD();
fds.fd = fd;
fds.events = PollFlags.In;
EventContext evctx = new EventContext();
evctx.version = EventContext.Version;
evctx.page_flip_handler = PageFlipPtr;
int timeout = block ? -1 : 0;
while (is_flip_queued)
{
fds.revents = 0;
if (Libc.poll(ref fds, 1, timeout) < 0)
{
break;
}
if ((fds.revents & (PollFlags.Hup | PollFlags.Error)) != 0)
{
break;
}
if ((fds.revents & PollFlags.In) != 0)
{
Drm.HandleEvent(fd, ref evctx);
}
else
{
break;
}
}
// Page flip has taken place, update buffer objects
if (!is_flip_queued)
{
IntPtr gbm_surface = WindowInfo.Handle;
Gbm.ReleaseBuffer(gbm_surface, bo);
bo = bo_next;
}
}
private void QueueFlip(int buffer)
{
LinuxWindowInfo wnd = WindowInfo as LinuxWindowInfo;
if (wnd == null)
{
throw new InvalidOperationException();
}
unsafe
{
int ret = Drm.ModePageFlip(fd, wnd.DisplayDevice.Id, buffer,
PageFlipFlags.FlipEvent, IntPtr.Zero);
if (ret < 0)
{
Debug.Print("[KMS] Failed to enqueue framebuffer flip. Error: {0}", ret);
}
is_flip_queued = true;
}
}