protected override void OnRenderFrame(Rect rect) { // clear everything Gles.glClear(Gles.GL_COLOR_BUFFER_BIT | Gles.GL_DEPTH_BUFFER_BIT | Gles.GL_STENCIL_BUFFER_BIT); // create the SkiaSharp context if (context == null) { glInterface = GRGlInterface.CreateNativeAngleInterface(); context = GRContext.Create(GRBackend.OpenGL, glInterface); } // get the new surface size var newSize = new SKSizeI((int)rect.Width, (int)rect.Height); // manage the drawing surface if (renderTarget == null || lastSize != newSize || !renderTarget.IsValid) { // create or update the dimensions lastSize = newSize; // read the info from the buffer 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; } glInfo = new GRGlFramebufferInfo((uint)framebuffer, colorType.ToGlSizedFormat()); // destroy the old surface surface?.Dispose(); surface = null; canvas = null; // re-create the render target renderTarget?.Dispose(); renderTarget = new GRBackendRenderTarget(newSize.Width, newSize.Height, samples, stencil, glInfo); } // create the surface if (surface == null) { surface = SKSurface.Create(context, renderTarget, surfaceOrigin, colorType); canvas = surface.Canvas; } using (new SKAutoCanvasRestore(canvas, true)) { // start drawing OnPaintSurface(new SKPaintGLSurfaceEventArgs(surface, renderTarget, surfaceOrigin, colorType, glInfo)); } // update the control canvas.Flush(); context.Flush(); }
protected override void OnRenderFrame(Rect rect) { // clear everything Gles.glClear(Gles.GL_COLOR_BUFFER_BIT | Gles.GL_DEPTH_BUFFER_BIT | Gles.GL_STENCIL_BUFFER_BIT); // create the SkiaSharp context if (context == null) { glInterface = GRGlInterface.CreateNativeAngleInterface(); context = GRContext.Create(GRBackend.OpenGL, glInterface); } // manage the drawing surface if (renderTarget == null || surface == null || renderTarget.Width != (int)rect.Width || renderTarget.Height != (int)rect.Height) { // create or update the dimensions renderTarget?.Dispose(); renderTarget = SKGLDrawable.CreateRenderTarget((int)rect.Width, (int)rect.Height); // create the surface surface?.Dispose(); surface = SKSurface.Create(context, renderTarget, GRSurfaceOrigin.BottomLeft, SKColorType.Rgba8888); } using (new SKAutoCanvasRestore(surface.Canvas, true)) { // start drawing OnPaintSurface(new SKPaintGLSurfaceEventArgs(surface, renderTarget, GRSurfaceOrigin.BottomLeft, SKColorType.Rgba8888)); } // update the control surface.Canvas.Flush(); context.Flush(); }
public void Resize(int width, int height) { if (_context == null) { //var glInterface = GRGlInterface.AssembleAngleInterface(D3DAngleInterop._window_info,); var glInterface = GRGlInterface.CreateNativeAngleInterface(); _context = GRContext.Create(GRBackend.OpenGL, glInterface); } var glInfo = new GRGlFramebufferInfo( fboId: 0, format: SKColorType.Rgba8888.ToGlSizedFormat()); _renderTarget = new GRBackendRenderTarget( width: width, height: height, sampleCount: 8, stencilBits: 8, glInfo: glInfo); _surface = SKSurface.Create( _context, _renderTarget, GRSurfaceOrigin.TopLeft, SKColorType.Rgba8888); }
protected override void OnRenderFrame(Rect rect) { base.OnRenderFrame(rect); if (designMode) { return; } if (!isVisible) { return; } // create the SkiaSharp context if (context == null) { var glInterface = GRGlInterface.CreateNativeAngleInterface(); context = GRContext.Create(GRBackend.OpenGL, glInterface); renderTarget = SKGLDrawable.CreateRenderTarget(); } // set the size renderTarget.Width = (int)rect.Width; renderTarget.Height = (int)rect.Height; // create the surface using (var surface = SKSurface.Create(context, renderTarget)) { // draw to the SkiaSharp surface OnPaintSurface(new SKPaintGLSurfaceEventArgs(surface, renderTarget)); // flush the canvas surface.Canvas.Flush(); } // flush the SkiaSharp context to the GL context context.Flush(); }
protected override void OnRenderFrame(Rect rect) { // clear everything Gles.glClear(Gles.GL_COLOR_BUFFER_BIT | Gles.GL_DEPTH_BUFFER_BIT | Gles.GL_STENCIL_BUFFER_BIT); // create the SkiaSharp context if (context == null) { glInterface = GRGlInterface.CreateNativeAngleInterface(); context = GRContext.Create(GRBackend.OpenGL, glInterface); } // manage the drawing surface if (renderTarget == null || surface == null || renderTarget.Width != (int)rect.Width || renderTarget.Height != (int)rect.Height) { // 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); var glInfo = new GRGlFramebufferInfo((uint)framebuffer, colorType.ToGlSizedFormat()); renderTarget = new GRBackendRenderTarget((int)rect.Width, (int)rect.Height, context.GetMaxSurfaceSampleCount(colorType), stencil, glInfo); // create the surface surface?.Dispose(); surface = SKSurface.Create(context, renderTarget, surfaceOrigin, colorType); } using (new SKAutoCanvasRestore(surface.Canvas, true)) { // start drawing OnPaintSurface(new SKPaintGLSurfaceEventArgs(surface, renderTarget, surfaceOrigin, colorType)); } // update the control surface.Canvas.Flush(); context.Flush(); }