private Image Output()
{
gl.Flush();
gl.Blit(IntPtr.Zero);
var provider = gl.RenderContextProvider as FBORenderContextProvider;
// TODO: We have to remove the alpha channel - for some reason it comes out as 0.0
// meaning the drawing comes out transparent.
var newFormatedBitmapSource = new FormatConvertedBitmap();
if (provider == null)
{
return(null);
}
newFormatedBitmapSource.BeginInit();
newFormatedBitmapSource.Source = BitmapConversion.HBitmapToBitmapSource(provider.InternalDIBSection.HBitmap);
newFormatedBitmapSource.DestinationFormat = PixelFormats.Rgb24;
newFormatedBitmapSource.EndInit();
var outStream = new MemoryStream();
BitmapEncoder enc = new BmpBitmapEncoder();
enc.Frames.Add(BitmapFrame.Create(newFormatedBitmapSource));
enc.Save(outStream);
//Console.ReadLine();
//gl.Flush();
//Console.ReadLine();
return(new Bitmap(outStream));
}
public void Render()
{
_gl.MakeCurrent();
_gl.ClearColor(0.2f, 0.2f, 0.2f, 0);
_gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
_gl.LoadIdentity();
if (RenderScene != null)
{
RenderScene(this, new SimpleOpenGlEventArgs
{
OpenGl = _gl
});
}
_gl.Blit(IntPtr.Zero);
var fboRenderContextProvider = (FBORenderContextProvider)_gl.RenderContextProvider;
var formatConvertedBitmap = new FormatConvertedBitmap();
formatConvertedBitmap.BeginInit();
formatConvertedBitmap.Source = BitmapConversion.HBitmapToBitmapSource(fboRenderContextProvider.InternalDIBSection.HBitmap);
formatConvertedBitmap.DestinationFormat = PixelFormats.Rgb24;
formatConvertedBitmap.EndInit();
OpenGlImage.Source = formatConvertedBitmap;
}
public void Draw()
{
if (this.IsDisposed)
{
return;
}
if (null == gl)
{
return;
}
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, _texture[0]);
gl.Begin(OpenGL.GL_QUADS);
gl.TexCoord(0.0, 0.0); gl.Vertex(-1.0, -1.0);
gl.TexCoord(1.0, 0.0); gl.Vertex(+1.0, -1.0);
gl.TexCoord(1.0, 1.0); gl.Vertex(+1.0, +1.0);
gl.TexCoord(0.0, 1.0); gl.Vertex(-1.0, +1.0);
gl.End();
using (Graphics g = CreateGraphics())
{
var hdc = g.GetHdc();
gl.Blit(hdc);
g.ReleaseHdc(hdc);
}
}
protected override void OnPaint(PaintEventArgs e)
{
// Start the stopwatch so that we can time the rendering.
stopwatch.Restart();
// Only draw if we're not in the designer
if (!DesignMode)
{
OpenGL.MakeCurrent();
DoOpenGLDraw(new RenderEventArgs(e.Graphics));
// Draw the FPS.
if (DrawFPS)
{
OpenGL.DrawText(5, 5, 1.0f, 0.0f, 0.0f, "Courier New", 12.0f,
string.Format("Draw Time: {0:0.0000} ms ~ {1:0.0} FPS", frameTime, 1000.0 / frameTime));
OpenGL.Flush();
}
// Blit our offscreen bitmap.
IntPtr handleDeviceContext = e.Graphics.GetHdc();
OpenGL.Blit(handleDeviceContext);
e.Graphics.ReleaseHdc(handleDeviceContext);
}
// Stop the stopwatch.
stopwatch.Stop();
// Store the frame time.
frameTime = stopwatch.Elapsed.TotalMilliseconds;
}
public override ImageSource Render()
{
GL.MakeCurrent();
GL.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
GL.ClearColor(1f, 0f, 0f, 0f);
_postProcesser.Capture(() =>
{
GL.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
_backgroundRenderer.Render();
_octreeRenderer.Render();
});
_postProcesser.Render();
GL.Blit(IntPtr.Zero);
var provider = GL.RenderContextProvider as FBORenderContextProvider;
if (provider == null)
{
return(null);
}
var newFormatedBitmapSource = new FormatConvertedBitmap();
newFormatedBitmapSource.BeginInit();
newFormatedBitmapSource.Source = BitmapConversion.HBitmapToBitmapSource(provider.InternalDIBSection.HBitmap);
newFormatedBitmapSource.DestinationFormat = PixelFormats.Rgb24;
newFormatedBitmapSource.EndInit();
return(newFormatedBitmapSource);
}
public override void Flush()
{
if (_drawn && Canvas.Sketch.Graphics != null)
{
IntPtr dc = Canvas.Sketch.Graphics.GetHdc();
_openGL.Flush();
_openGL.Blit(dc);
Canvas.Sketch.Graphics.ReleaseHdc(dc);
}
}
public override void EndDraw()
{
if (Canvas.Sketch.Graphics != null)
{
IntPtr dc = Canvas.Sketch.Graphics.GetHdc();
_openGL.Blit(dc);
_openGL.PopMatrix();
Canvas.Sketch.Graphics.ReleaseHdc(dc);
}
}
private void _renderTimer_Tick(object sender, EventArgs e)
{
GL.MakeCurrent();
if (Render != null)
{
Render.Invoke(GL);
}
GL.Blit(IntPtr.Zero);
UpdateImage();
}
protected override void OnPaint(PaintEventArgs e)
{
// Start the stopwatch so that we can time the rendering.
stopwatch.Restart();
// Make sure it's our instance of openSharpGL that's active.
OpenGL.MakeCurrent();
// Do the scene drawing.
Scene.Draw();
if (this.CameraType == CameraTypes.Ortho)
{
// Redraw model container's bounding box so that it appears in front of models.
// TODO: this is not needed in ECameraType.Perspecitive mode. fix this.
//this.modelContainer.Render(this.OpenGL, SceneGraph.Core.RenderMode.Render);
}
UIScene.Draw();
// If there is a draw handler, then call it.
DoOpenGLDraw(new RenderEventArgs(e.Graphics));
// Draw the FPS.
if (DrawFPS)
{
OpenGL.DrawText(5, 5, 1.0f, 0.0f, 0.0f, "Courier New", 12.0f,
string.Format("Draw Time: {0:0.0000} ms ~ {1:0.0} FPS", frameTime, 1000.0 / frameTime));
OpenGL.Flush();
}
// Blit our offscreen bitmap.
IntPtr handleDeviceContext = e.Graphics.GetHdc();
OpenGL.Blit(handleDeviceContext);
e.Graphics.ReleaseHdc(handleDeviceContext);
// If's there's a GDI draw handler, then call it.
DoGDIDraw(new RenderEventArgs(e.Graphics));
// Stop the stopwatch.
stopwatch.Stop();
// Store the frame time.
frameTime = stopwatch.Elapsed.TotalMilliseconds;
}
/// <summary>
/// Renders to the specified graphics.
/// </summary>
/// <param name="graphics">The graphics to render to.</param>
protected void Render(Graphics graphics)
{
// Start the stopwatch so that we can time the rendering.
stopwatch.Restart();
// Make sure it's our instance of openSharpGL that's active.
OpenGL.MakeCurrent();
// If there is a draw handler, then call it.
DoOpenGLDraw(new RenderEventArgs(graphics));
// Draw the FPS.
if (DrawFPS)
{
OpenGL.DrawText(5, 5, 1.0f, 0.0f, 0.0f, "Courier New", 12.0f,
string.Format("Draw Time: {0:0.0000} ms ~ {1:0.0} FPS", frameTime, 1000.0 / frameTime));
OpenGL.Flush();
}
// Blit our offscreen bitmap.
var handleDeviceContext = graphics.GetHdc();
OpenGL.Blit(handleDeviceContext);
graphics.ReleaseHdc(handleDeviceContext);
// Perform GDI drawing.
if (OpenGL.RenderContextProvider != null && OpenGL.RenderContextProvider.GDIDrawingEnabled)
{
DoGDIDraw(new RenderEventArgs(graphics));
}
// Stop the stopwatch.
stopwatch.Stop();
// Store the frame time.
frameTime = stopwatch.Elapsed.TotalMilliseconds;
}
protected override void OnPaint(PaintEventArgs e)
{
// Start the stopwatch so that we can time the rendering.
stopwatch.Restart();
// Make sure it's our instance of openSharpGL that's active.
OpenGL.MakeCurrent();
// Do the scene drawing.
scene.Draw();
// If there is a draw handler, then call it.
DoOpenGLDraw(new RenderEventArgs(e.Graphics));
// Draw the FPS.
if (DrawFPS)
{
OpenGL.DrawText(5, 5, 1.0f, 0.0f, 0.0f, "Courier New", 12.0f,
string.Format("Draw Time: {0:0.0000} ms ~ {1:0.0} FPS", frameTime, 1000.0 / frameTime));
OpenGL.Flush();
}
// Blit our offscreen bitmap.
IntPtr handleDeviceContext = e.Graphics.GetHdc();
OpenGL.Blit(handleDeviceContext);
e.Graphics.ReleaseHdc(handleDeviceContext);
// If's there's a GDI draw handler, then call it.
DoGDIDraw(new RenderEventArgs(e.Graphics));
// Stop the stopwatch.
stopwatch.Stop();
// Store the frame time.
frameTime = stopwatch.Elapsed.TotalMilliseconds;
}
private void RenderLoop()
{
var queuecontext = glContext as QueueSynchronizationContext;
SynchronizationContext.SetSynchronizationContext(glContext);
int fps_count = 0;
int fps_ticks = 0;
int pre_ticks = Environment.TickCount & Int32.MaxValue;
var updatearg = new OGLDeviceUpdateArgs(gl);
int width = -1, height = -1; IntPtr handle = IntPtr.Zero;
uiContext.Send(d => { // WindowsFormsSynchronizationContext обрабатывает синхронные сообщения в
width = Width; // общем обработчике сообщений окна (WndProc). Это означает, что главный
height = Height; // поток обратает синхронное сообщение лишь после того как завершится
handle = Handle; // выполнение текущего кода. Таким образом в неявном виде тут происходит
}, null); // синхронизация потоков - поток ожидаяет выполнения OnMainWindowLoad()
// Создание и работа с устройством OpenGL должны осуществляться в одном потоке
gl.Create(_glVersion, _glRenderContextType, width, height, 32, handle);
_glVersion = ((RenderContextProvider)gl.RenderContextProvider).CreatedOpenGLVersion;
// Установка наиболее распространенных стилей
gl.ShadeModel(OpenGL.GL_SMOOTH);
gl.ClearColor(0.5f, 0.5f, 0.5f, 0.0f);
gl.ClearDepth(1.0f);
gl.Enable(OpenGL.GL_DEPTH_TEST);
gl.DepthFunc(OpenGL.GL_LEQUAL);
gl.Enable(OpenGL.GL_BLEND); // Правило наложения (смешивания) цветов
gl.BlendFunc(OpenGL.GL_SRC_ALPHA, OpenGL.GL_ONE_MINUS_SRC_ALPHA); // result_color = src * src.a + dst * (1 - src.a)
Initialize(Width, Height, false); // задаем проецирование
OpenGL.MakeCurrent();
if (Inited != null)
{
Inited(this, new OpenGLEventArgs(gl));
}
while (true)
{
queuecontext.Run();
if (ogl_resize_request_param != -1)
{
Initialize(ogl_resize_request_param & 0xFFFF, ogl_resize_request_param >> 16, false);
ogl_resize_request_param = -1;
}
var cur_ticks = Environment.TickCount & Int32.MaxValue;
if (cur_ticks - fps_ticks > 1000)
{
uiContext.Post(s => {
if (ParentForm != null)
{
ParentForm.Text = String.Format("FPS: {0}", (int)s);
}
}, fps_count);
fps_count = 1;
fps_ticks = cur_ticks;
}
else
{
++fps_count;
}
lock (LockObj) {
if (DeviceUpdate != null)
{
DeviceUpdate(this, updatearg.Update(cur_ticks - pre_ticks));
gl.Flush();
OpenGL.Blit(handle); // Для ContextType.NativeWindow тут выполняется переключение буфферов,
pre_ticks = cur_ticks; // сам же параметр handle при этом вообще никак и ни где не используется.
}
}
Thread.Sleep(1);
}
}
