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    <p>From your code and help from <a href="http://basic4gl.wikispaces.com/2D+Drawing+in+OpenGL" rel="nofollow">http://basic4gl.wikispaces.com/2D+Drawing+in+OpenGL</a>, I got SharpGL displaying a video from EmguCV</p> <pre><code>public partial class FormSharpGLTexturesSample : Form { Capture capture; public FormSharpGLTexturesSample() { InitializeComponent(); // Get the OpenGL object, for quick access. SharpGL.OpenGL gl = this.openGLControl1.OpenGL; // A bit of extra initialisation here, we have to enable textures. gl.Enable(OpenGL.GL_TEXTURE_2D); gl.Disable(OpenGL.GL_DEPTH_TEST); // Create our texture object from a file. This creates the texture for OpenGL. capture = new Capture(@"Video file here"); } private void openGLControl1_OpenGLDraw(object sender, RenderEventArgs e) { // Get the OpenGL object, for quick access. SharpGL.OpenGL gl = this.openGLControl1.OpenGL; int Width = openGLControl1.Width; int Height = openGLControl1.Height; gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT); gl.LoadIdentity(); var frame = capture.QueryFrame(); texture.Destroy(gl); texture.Create(gl, frame.Bitmap); // Bind the texture. texture.Bind(gl); gl.Begin(OpenGL.GL_QUADS); gl.TexCoord(0.0f, 0.0f); gl.Vertex(0, 0, 0); gl.TexCoord(1.0f, 0.0f); gl.Vertex(Width, 0, 0); gl.TexCoord(1.0f, 1.0f); gl.Vertex(Width, Height, 0); gl.TexCoord(0.0f, 1.0f); gl.Vertex(0, Height, 0); gl.End(); gl.Flush(); } // The texture identifier. Texture texture = new Texture(); private void openGLControl1_Resized(object sender, EventArgs e) { SharpGL.OpenGL gl = this.openGLControl1.OpenGL; // Create an orthographic projection. gl.MatrixMode(MatrixMode.Projection); gl.LoadIdentity(); // NOTE: Basically no matter what I do, the only points I see are those at // the "near" surface (with z = -zNear)--in this case, I only see green points gl.Ortho(0, openGLControl1.Width, openGLControl1.Height, 0, 0, 1); // Back to the modelview. gl.MatrixMode(MatrixMode.Modelview); } } </code></pre> <p>I hope it helps.</p> <p>After some experiments, I could use TexImage2D but only with images having a width and height be a power of two</p> <p>Instead of:</p> <pre><code>var frame = capture.QueryFrame(); texture.Destroy(gl); texture.Create(gl, frame.Bitmap); </code></pre> <p>It can be replaced by the following block to update the data of the picture. I would like to know how to remove the need to call Resize.</p> <pre><code>var frame = capture.QueryFrame(); frame = frame.Resize(256, 256, Emgu.CV.CvEnum.INTER.CV_INTER_NN); Bitmap Bitmap = frame.Bitmap; BitmapData bitmapData = Bitmap.LockBits(new Rectangle(0, 0, Bitmap.Width, Bitmap.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb); gl.BindTexture(OpenGL.GL_TEXTURE_2D, textures[0]); gl.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA, Bitmap.Width, Bitmap.Height, 0, OpenGL.GL_BGR, OpenGL.GL_UNSIGNED_BYTE, bitmapData.Scan0); gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR); // Required for TexImage2D gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR); // Required for TexImage2D </code></pre>
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