/// <summary>
/// Releases all resources used by the <see cref="VideoCoreWindow"/> object.
/// </summary>
/// <param name="disposing">
/// </param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (_ElementHandle != 0)
{
uint updateHandle = Bcm.vc_dispmanx_update_start(0);
Bcm.vc_dispmanx_element_remove(updateHandle, _ElementHandle);
Bcm.vc_dispmanx_update_submit_sync(updateHandle);
_ElementHandle = 0;
}
if (_DispManxDisplay != 0)
{
Bcm.vc_dispmanx_display_close(_DispManxDisplay);
_DispManxDisplay = 0;
}
if (_NativeWindowLock != null)
{
_NativeWindowLock.Dispose();
_NativeWindowLock = null;
}
}
}
/// <summary>
/// Copy memory.
/// </summary>
/// <param name="dst">
/// A <see cref="IntPtr"/> that specify the address of the destination unmanaged memory.
/// </param>
/// <param name="src">
/// A <see cref="Array"/> that specify the source array object.
/// </param>
/// <param name="bytes">
/// A <see cref="ulong"/> that specify the number of bytes to copy.
/// </param>
public static void Copy(IntPtr dst, Array src, ulong bytes)
{
using (MemoryLock srcLock = new MemoryLock(src)) {
_CopyPointer(
dst.ToPointer(),
srcLock.Address.ToPointer(),
bytes
);
}
}
/// <summary>
/// Copy memory.
/// </summary>
/// <param name="dst">
/// A <see cref="Array"/> that specify the address of the destination unmanaged memory.
/// </param>
/// <param name="src">
/// A <see cref="IntPtr"/> that specify the source array object.
/// </param>
/// <param name="bytes">
/// A <see cref="ulong"/> that specify the number of bytes to copy.
/// </param>
public static void Copy(Array dst, IntPtr src, ulong bytes)
{
using (MemoryLock dstLock = new MemoryLock(dst)) {
_CopyPointer(
dstLock.Address.ToPointer(),
src.ToPointer(),
bytes
);
}
}
private void DrawLines2f_GL_1_1(Vertex2f[] vertices)
{
if ((vertices.Length % 2) != 0)
{
throw new ArgumentException("length not a multiple of 2", "vertices");
}
using (MemoryLock memoryLock = new MemoryLock(vertices)) {
// Setup arrays
Gl.VertexPointer(2, VertexPointerType.Float, 0, memoryLock.Address);
Gl.EnableClientState(EnableCap.VertexArray);
// Draw arrays
Gl.DrawArrays(PrimitiveType.Lines, 0, vertices.Length);
}
}
/// <summary>
/// Construct a fullscreen window.
/// </summary>
public VideoCoreWindow()
{
try {
int width, height;
KhronosApi.LogComment("Creating VideoCore IV native window");
if (Bcm.graphics_get_display_size(0 /* LCD */, out width, out height) < 0)
{
throw new InvalidOperationException("unable to get BCM display size");
}
Bcm.VC_RECT_T dstRect = new Bcm.VC_RECT_T(0, 0, width, height);
Bcm.VC_RECT_T srcRect = new Bcm.VC_RECT_T(0, 0, width << 16, height << 16);
if ((_DispManxDisplay = Bcm.vc_dispmanx_display_open(0 /* LCD */)) == 0)
{
throw new InvalidOperationException("unable to open DispManX display");
}
// Update - Add element
uint updateHandle = Bcm.vc_dispmanx_update_start(0);
_ElementHandle = Bcm.vc_dispmanx_element_add(updateHandle, _DispManxDisplay, 0, dstRect, 0, srcRect, 0, IntPtr.Zero, IntPtr.Zero, Bcm.DISPMANX_TRANSFORM_T.DISPMANX_NO_ROTATE);
Bcm.vc_dispmanx_update_submit_sync(updateHandle);
// Native window
_NativeWindow = new EGL_DISPMANX_WINDOW_T();
_NativeWindow.element = _ElementHandle;
_NativeWindow.width = width;
_NativeWindow.height = height;
// Keep native window pinned
_NativeWindowLock = new MemoryLock(_NativeWindow);
KhronosApi.LogComment("VideoCore IV Native Window is 0x{0}", _NativeWindowLock.Address.ToString("X"));
} catch {
Dispose();
throw;
}
}
private void DrawLines2f_GL_1_1(Vertex2f[] vertices)
{
if ((vertices.Length % 2) != 0)
throw new ArgumentException("length not a multiple of 2", "vertices");
using (MemoryLock memoryLock = new MemoryLock(vertices)) {
// Setup arrays
Gl.VertexPointer(2, VertexPointerType.Float, 0, memoryLock.Address);
Gl.EnableClientState(EnableCap.VertexArray);
// Draw arrays
Gl.DrawArrays(PrimitiveType.Lines, 0, vertices.Length);
}
}
