void DoUpdate()
{
// set context and bind buffers
EAGLContext.SetCurrentContext(_glContext);
ThreadContext.Current.GLContext = _glContext.Handle;
_alContext.MakeCurrent();
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, _cb);
// do user time-step
var time = _link.Timestamp;
_frame.Time = time;
_frame.DeltaTime = _lastTime < 0.0 ? 0f : (float)(time - _lastTime);
_lastTime = time;
if (_loadFrame > 0)
{
_frame.DeltaTime = Interval / 60f;
_loadFrame--;
}
if (this.Update != null)
{
Update(this, _frame);
}
if (this.Render != null)
{
Render(this, _frame);
}
// present output
_glContext.PresentRenderBuffer((uint)RenderbufferTarget.Renderbuffer);
}
public void PresentRenderBufferTest()
{
TestRuntime.AssertXcodeVersion(8, 0);
var obj = new EAGLContext(EAGLRenderingAPI.OpenGLES2);
Asserts.AreEqual(true, obj.PresentRenderBuffer((int)RenderbufferTarget.Renderbuffer, 0), "PresentRenderBuffer");
if (TestRuntime.CheckXcodeVersion(8, 3))
{
Asserts.AreEqual(true, obj.PresentRenderBuffer((int)RenderbufferTarget.Renderbuffer, 0, EAGLContext.PresentationMode.AtTime), "PresentRenderBufferAtTime");
Asserts.AreEqual(true, obj.PresentRenderBuffer((int)RenderbufferTarget.Renderbuffer, 0, EAGLContext.PresentationMode.AfterMinimumDuration), "PresentRenderBufferAfterMinimumDuration");
}
}
public virtual void Render()
{
if (glContext == null)
{
PrepareGLContexts();
}
EAGLContext.SetCurrentContext(glContext);
// create the surface
if (renderTarget.Width == 0 || renderTarget.Height == 0)
{
renderTarget = SKGLDrawable.CreateRenderTarget();
}
using (var surface = SKSurface.Create(context, renderTarget))
{
// draw on the surface
DrawInSurface(surface, renderTarget);
SKDelegate?.DrawInSurface(surface, renderTarget);
surface.Canvas.Flush();
}
// flush the SkiaSharp context to the GL context
context.Flush();
// present the GL buffers
glContext.PresentRenderBuffer(Gles.GL_RENDERBUFFER);
EAGLContext.SetCurrentContext(null);
}
public override void SwapBuffers()
{
if (!EAGLContext.PresentRenderBuffer((uint)OpenTK.Graphics.ES11.All.RenderbufferOes))
{
throw new InvalidOperationException ("EAGLContext.PresentRenderbuffer failed.");
}
}
public override void SwapBuffers()
{
if (!EAGLContext.PresentRenderBuffer((uint)All.Renderbuffer))
{
throw new InvalidOperationException("EAGLContext.PresentRenderbuffer failed.");
}
}
void drawView()
{
GL.BindFramebuffer(FramebufferTarget.Framebuffer, frameBuffer);
Controller.Draw();
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, renderBuffer);
context.PresentRenderBuffer((uint)RenderbufferTarget.Renderbuffer);
}
public virtual void Render()
{
if (glContext == null)
{
PrepareGLContexts();
}
EAGLContext.SetCurrentContext(glContext);
// manage the drawing surface
if (renderTarget == null || surface == null)
{
// create or update the dimensions
renderTarget?.Dispose();
Gles.glGetIntegerv(Gles.GL_FRAMEBUFFER_BINDING, out var framebuffer);
Gles.glGetIntegerv(Gles.GL_STENCIL_BITS, out var stencil);
Gles.glGetIntegerv(Gles.GL_SAMPLES, out var samples);
var maxSamples = context.GetMaxSurfaceSampleCount(colorType);
if (samples > maxSamples)
{
samples = maxSamples;
}
Gles.glGetRenderbufferParameteriv(Gles.GL_RENDERBUFFER, Gles.GL_RENDERBUFFER_WIDTH, out var bufferWidth);
Gles.glGetRenderbufferParameteriv(Gles.GL_RENDERBUFFER, Gles.GL_RENDERBUFFER_HEIGHT, out var bufferHeight);
var glInfo = new GRGlFramebufferInfo((uint)framebuffer, colorType.ToGlSizedFormat());
renderTarget = new GRBackendRenderTarget(bufferWidth, bufferHeight, samples, stencil, glInfo);
// create the surface
surface?.Dispose();
surface = SKSurface.Create(context, renderTarget, surfaceOrigin, colorType);
}
using (new SKAutoCanvasRestore(surface.Canvas, true))
{
// start drawing
var e = new SKPaintGLSurfaceEventArgs(surface, renderTarget, surfaceOrigin, colorType);
OnPaintSurface(e);
#pragma warning disable CS0618 // Type or member is obsolete
DrawInSurface(e.Surface, e.RenderTarget);
SKDelegate?.DrawInSurface(e.Surface, e.RenderTarget);
#pragma warning restore CS0618 // Type or member is obsolete
}
// flush the SkiaSharp context to the GL context
surface.Canvas.Flush();
context.Flush();
// present the GL buffers
glContext.PresentRenderBuffer(Gles.GL_RENDERBUFFER);
EAGLContext.SetCurrentContext(null);
}
public virtual void Render()
{
if (glContext == null)
{
PrepareGLContexts();
}
EAGLContext.SetCurrentContext(glContext);
// manage the drawing surface
if (renderTarget == null || surface == null)
{
// create or update the dimensions
renderTarget?.Dispose();
renderTarget = SKGLDrawable.CreateRenderTarget(0, 0);
// create the surface
surface?.Dispose();
surface = SKSurface.Create(context, renderTarget, GRSurfaceOrigin.BottomLeft, SKColorType.Rgba8888);
}
using (new SKAutoCanvasRestore(surface.Canvas, true))
{
// start drawing
var e = new SKPaintGLSurfaceEventArgs(surface, renderTarget, GRSurfaceOrigin.BottomLeft, SKColorType.Rgba8888);
OnPaintSurface(e);
#pragma warning disable CS0618 // Type or member is obsolete
DrawInSurface(e.Surface, e.RenderTarget);
SKDelegate?.DrawInSurface(e.Surface, e.RenderTarget);
#pragma warning restore CS0618 // Type or member is obsolete
}
// flush the SkiaSharp context to the GL context
surface.Canvas.Flush();
context.Flush();
// present the GL buffers
glContext.PresentRenderBuffer(Gles.GL_RENDERBUFFER);
EAGLContext.SetCurrentContext(null);
}
private void RenderWithSquareVerticies(float[,] squareVerticies, float[,] textureVerticies)
{
// Use Shader Program
GL.UseProgram(glProgram);
// Update attribute values
GL.VertexAttribPointer(ATTRIB_VERTEX, 2, VertexAttribPointerType.Float, false, 0, squareVerticies);
GL.EnableVertexAttribArray(ATTRIB_VERTEX);
GL.VertexAttribPointer(ATTRIB_TEXCOORD, 2, VertexAttribPointerType.Float, false, 0, textureVerticies);
GL.EnableVertexAttribArray(ATTRIB_TEXCOORD);
// Validate program before drawing. (For Debugging purposes)
#if DEBUG
GL.ValidateProgram(glProgram);
#endif
GL.DrawArrays(BeginMode.TriangleStrip, 0, 4);
// Present
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, colorBuffer);
context.PresentRenderBuffer((uint)All.Renderbuffer);
}
public void Present()
{
Bind();
var success = _context.PresentRenderBuffer(GlConsts.GL_RENDERBUFFER);
}
public void DisplayPixelBuffer(CVPixelBuffer pixelBuffer)
{
DrawTextInCorner(pixelBuffer);
CVReturn error;
if (pixelBuffer != null)
{
int frameWidth = (int)pixelBuffer.Width;
int frameHeight = (int)pixelBuffer.Height;
if (videoTextureCache == null)
{
Console.WriteLine("No video texture cache");
return;
}
CleanUpTextures();
CVAttachmentMode attachmentMode;
var colorAttachments = pixelBuffer.GetAttachment <NSString> (CVImageBuffer.YCbCrMatrixKey, out attachmentMode);
if (colorAttachments == CVImageBuffer.YCbCrMatrix_ITU_R_601_4)
{
preferredConversion = colorConversion601;
}
else
{
preferredConversion = colorConversion709;
}
GL.ActiveTexture(TextureUnit.Texture0);
lumaTexture = videoTextureCache.TextureFromImage(pixelBuffer, true, All.RedExt, frameWidth, frameHeight,
All.RedExt, DataType.UnsignedByte, 0, out error);
if (lumaTexture == null)
{
Console.WriteLine("Error at CVOpenGLESTextureCach.TextureFromImage");
}
GL.BindTexture(lumaTexture.Target, lumaTexture.Name);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.ClampToEdge);
GL.ActiveTexture(TextureUnit.Texture1);
chromaTexture = videoTextureCache.TextureFromImage(pixelBuffer, true, All.RgExt, frameWidth / 2, frameHeight / 2,
All.RgExt, DataType.UnsignedByte, 1, out error);
if (chromaTexture == null)
{
Console.WriteLine("Error at CVOpenGLESTextureCach.TextureFromImage");
}
GL.BindTexture(chromaTexture.Target, chromaTexture.Name);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.ClampToEdge);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, frameBufferHandle);
GL.Viewport(0, 0, backingWidth, backingHeight);
}
GL.ClearColor(0f, 0f, 0f, 1f);
GL.Clear(ClearBufferMask.ColorBufferBit);
GL.UseProgram(Program);
GL.Uniform1(uniforms [(int)UniformIndex.RotationAngle], 0f);
GL.UniformMatrix3(uniforms [(int)UniformIndex.ColorConversionMatrix], 1, false, preferredConversion);
CGRect vertexSamplingRect = AVUtilities.WithAspectRatio(Bounds, PresentationRect);
var normalizedSamplingSize = new CGSize(0f, 0f);
var cropScaleAmount = new CGSize(vertexSamplingRect.Width / Bounds.Width, vertexSamplingRect.Height / Bounds.Height);
if (cropScaleAmount.Width > cropScaleAmount.Height)
{
normalizedSamplingSize.Width = 1f;
normalizedSamplingSize.Height = cropScaleAmount.Height / cropScaleAmount.Width;
}
else
{
normalizedSamplingSize.Width = 1f;
normalizedSamplingSize.Height = cropScaleAmount.Width / cropScaleAmount.Height;
}
float[] quadVertexData =
{
-1f * (float)normalizedSamplingSize.Width, -1f * (float)normalizedSamplingSize.Height,
(float)normalizedSamplingSize.Width, -1f * (float)normalizedSamplingSize.Height,
-1f * (float)normalizedSamplingSize.Width, (float)normalizedSamplingSize.Height,
(float)normalizedSamplingSize.Width, (float)normalizedSamplingSize.Height,
};
GL.VertexAttribPointer((int)AttributeIndex.Vertex, 2, VertexAttribPointerType.Float, false, 0, quadVertexData);
GL.EnableVertexAttribArray((int)AttributeIndex.Vertex);
var textureSamplingRect = new CGRect(0, 0, 1, 1);
float[] quadTextureData =
{
(float)textureSamplingRect.GetMinX(), (float)textureSamplingRect.GetMaxY(),
(float)textureSamplingRect.GetMaxX(), (float)textureSamplingRect.GetMaxY(),
(float)textureSamplingRect.GetMinX(), (float)textureSamplingRect.GetMinY(),
(float)textureSamplingRect.GetMaxX(), (float)textureSamplingRect.GetMinY()
};
GL.VertexAttribPointer((int)AttributeIndex.TextureCoordinates, 2, VertexAttribPointerType.Float, false, 0, quadTextureData);
GL.EnableVertexAttribArray((int)AttributeIndex.TextureCoordinates);
GL.DrawArrays(BeginMode.TriangleStrip, 0, 4);
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, colorBufferHandle);
context.PresentRenderBuffer((int)RenderbufferTarget.Renderbuffer);
}
