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POGL Project doesn't work properly
 

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    <p>I'm using code which tries to work like Glu.Project() since OpenTK doesn't support Glu.</p> <pre><code> Vector4 pos = new Vector4(s.Position.X, 0.0f, s.Position.Y, 1.0f); Matrix4 mov = new Matrix4(); Matrix4 prj = new Matrix4(); Matrix4 mpj = new Matrix4(); float[] vp = new float[4]; GL.GetFloat(GetPName.ModelviewMatrix, out mov); GL.GetFloat(GetPName.ProjectionMatrix, out prj); GL.GetFloat(GetPName.Viewport, vp); Matrix4.Mult(ref prj, ref mov, out mpj); Vector4.Transform(ref pos, ref mpj, out pos); // Final mathematics as described in OpenGL 2.1 Glu specs s.set2DPos(new Vector2f( (vp[0] + (vp[2] * (pos.X + 1) / 2.0f)), (vp[1] + (vp[3] * (pos.Y + 1) / 2.0f)) )); // Final mathematics as described in OpenGL 3 Vector specs s.set2DPos(new Vector2f( (view[2] / 2 * pos.X + view[0]), (view[3] / 2 * pos.X + view[1]) )); // Neither of them work, but in relation OpenGL 3 vector specs work better. </code></pre> <p>s is a class which primary exists as a model in 3D space at s.Position. But the values I'm getting from this are astronomically far beyond the window boundaries.</p> <p>The ModelView matrix from a breakpoint:</p> <pre><code>{(1, 0, 0, 0) (0, 0.7071068, 0.7071068, 0) (0, -0.7071068, 0.7071068, 0) (0, -141.4214, -141.4214, 1)} </code></pre> <p>The Projection matrix from a breakpoint:</p> <pre><code>{(1.931371, 0, 0, 0) (0, 2.414213, 0, 0) (0, 0, -1.0002, -1) (0, 0, -2.0002, 0)} </code></pre> <p>Am I doing something wrong or did I get something wrong? Am I missing something?</p>
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    1. COTried with Glu, very very similar results.
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