コード例 #1
0
            private void updateTargetTexture(int width, int height)
            {
                GLES20.GlActiveTexture(GLES20.GlTexture2);
                _buffer = new byte[0];

                if (funnyGhostEffectBuffer == null)
                {
                    _buffer = new byte[4 * width * height];
                    for (var i = 0; i < (width * height * 4); i++)
                    {
                        _buffer [i] = (byte)((System.Math.Sin(i) * 127) + 127);
                    }
                }

                GLES20.GlBindTexture(GLES20.GlTexture2d, _otherTextureId);
                GLES20.GlUniform1i(_otherTextureUniform, 2);
                GLES20.GlTexParameterf(GLES20.GlTexture2d, GLES20.GlTextureMinFilter,
                                       GLES20.GlNearest);
                GLES20.GlTexParameterf(GLES20.GlTexture2d, GLES20.GlTextureMagFilter,
                                       GLES20.GlLinear);
                GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapS,
                                       GLES20.GlClampToEdge);
                GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapT,
                                       GLES20.GlClampToEdge);

                GLES10.GlTexImage2D(GLES20.GlTexture2d, 0, GLES20.GlRgba, width, height, 0, GLES20.GlRgba, GLES20.GlUnsignedByte, funnyGhostEffectBuffer ?? ByteBuffer.Wrap(_buffer));
                if (funnyGhostEffectBuffer != null)
                {
                    funnyGhostEffectBuffer.Clear();
                    funnyGhostEffectBuffer.Dispose();
                }
            }
コード例 #2
0
        public void OnDrawFrame(IGL10 gl)
        {
            GLES10.GlClear(GLES10.GlColorBufferBit | GLES10.GlDepthBufferBit | GLES10.GlStencilBufferBit);

            // create the contexts if not done already
            if (context == null)
            {
                var glInterface = GRGlInterface.CreateNativeGlInterface();
                context = GRContext.Create(GRBackend.OpenGL, glInterface);
            }

            // manage the drawing surface
            if (renderTarget == null || surface == null || renderTarget.Width != surfaceWidth || renderTarget.Height != surfaceHeight)
            {
                // create or update the dimensions
                renderTarget?.Dispose();
                var buffer = new int[3];
                GLES20.GlGetIntegerv(GLES20.GlFramebufferBinding, buffer, 0);
                GLES20.GlGetIntegerv(GLES20.GlStencilBits, buffer, 1);
                GLES20.GlGetIntegerv(GLES20.GlSamples, buffer, 2);
                var samples    = buffer[2];
                var maxSamples = context.GetMaxSurfaceSampleCount(colorType);
                if (samples > maxSamples)
                {
                    samples = maxSamples;
                }
                var glInfo = new GRGlFramebufferInfo((uint)buffer[0], colorType.ToGlSizedFormat());
                renderTarget = new GRBackendRenderTarget(surfaceWidth, surfaceHeight, samples, buffer[1], 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
                OnDrawFrame(e.Surface, e.RenderTarget);
#pragma warning restore CS0618 // Type or member is obsolete
            }

            // flush the SkiaSharp contents to GL
            surface.Canvas.Flush();
            context.Flush();
        }
コード例 #3
0
        public void OnDrawFrame(IGL10 gl)
        {
            GLES10.GlClear(GLES10.GlStencilBufferBit);

            // create the surface
            using (var surface = SKSurface.Create(context, renderTarget))
            {
                // draw using SkiaSharp
                OnDrawFrame(surface, renderTarget);

                surface.Canvas.Flush();
            }

            // flush the SkiaSharp contents to GL
            context.Flush();
        }
コード例 #4
0
        public void OnDrawFrame(IGL10 gl)
        {
            GLES10.GlClear(GLES10.GlColorBufferBit | GLES10.GlDepthBufferBit | GLES10.GlStencilBufferBit);

            // create the contexts if not done already
            if (context == null)
            {
                var glInterface = GRGlInterface.CreateNativeGlInterface();
                context = GRContext.Create(GRBackend.OpenGL, glInterface);
            }

            // manage the drawing surface
            if (renderTarget == null || surface == null || renderTarget.Width != surfaceWidth || renderTarget.Height != surfaceHeight)
            {
                // create or update the dimensions
                renderTarget?.Dispose();
                renderTarget = SKGLDrawable.CreateRenderTarget(surfaceWidth, surfaceHeight);

                // 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
                OnDrawFrame(e.Surface, e.RenderTarget);
#pragma warning restore CS0618 // Type or member is obsolete
            }

            // flush the SkiaSharp contents to GL
            surface.Canvas.Flush();
            context.Flush();
        }