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copied!<p>I´ve encountered the same problems (seen weird distortions and everything else), my solution based on the <a href="http://developer.android.com/training/graphics/opengl/motion.html" rel="nofollow noreferrer" title="Android Training > Displaying Graphics with OpenGL ES > Adding Motion">Android Training > Displaying Graphics with OpenGL ES > Adding Motion</a> below.</p> <p>(Head over to my detailed post for at if needed: <a href="https://stackoverflow.com/questions/13480043/opengl-es-android-matrix-transformations/17292894#17292894">OpenGL ES Android Matrix Transformations</a>.)</p> <ol> <li><p>Set a <em>mModelMatrix</em> to identity Matrix</p> <pre><code>Matrix.setIdentityM(mModelMatrix, 0); // initialize to identity matrix </code></pre></li> <li><p>Apply translation to the <em>mModelMatrix</em></p> <pre><code>Matrix.translateM(mModelMatrix, 0, -0.5f, 0, 0); // translation to the left </code></pre></li> <li><p>Apply rotation to a <em>mRotationMatrix</em> (angles in degrees)</p> <pre><code>Matrix.setRotateM(mRotationMatrix, 0, mAngle, 0, 0, -1.0f); </code></pre></li> <li><p>Combine rotation and translation via <em>Matrix.multiplyMM</em></p> <pre><code>mTempMatrix = mModelMatrix.clone(); Matrix.multiplyMM(mModelMatrix, 0, mTempMatrix, 0, mRotationMatrix, 0); </code></pre></li> <li><p>Combine the model matrix with the projection and camera view</p> <pre><code>mTempMatrix = mMVPMatrix.clone(); Matrix.multiplyMM(mMVPMatrix, 0, mTempMatrix, 0, mModelMatrix, 0); </code></pre></li> </ol>

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