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POGet nothing when retriving OpengGL capabilities values via glget on android
 

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  1. POGet nothing when retriving OpengGL capabilities values via glget on android
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    <p>I want to detect whether those devices running my game support some OpengGL features, like GL_MAX_VERTEX_ATTRIBS. I had wrote these codes:</p> <pre><code>int[] result = new int[1]; GLES20.glGetIntegerv(GLES20.GL_MAX_VERTEX_ATTRIBS, result, 0); </code></pre> <p>I have read the official document and it said the return value must be higher than 8, but what I have got from the result is always 0. I had used these things via C language on IOS well, but on android they had really confused me. What should i do to finish this kind of tasks on android?</p> <p>I have found that "OpenGL Extensions Viewer"(<a href="http://www.realtech-vr.com/glview/" rel="nofollow noreferrer">http://www.realtech-vr.com/glview/</a>) can detect a lot of things on android and it only has a listview on screen, can I get these informations without create a custom GLSurfaceView and a Renderer?</p> <p>I found this similar question <a href="https://stackoverflow.com/questions/8442720/get-gpu-info-on-android-without-surfaceview">Get GPU info on Android without SurfaceView</a> But it also has no best answer.</p> <p>I have solved this problem now, I put the detecting codes in another Activity, and follow this tutorial <a href="http://www.learnopengles.com/android-lesson-one-getting-started/" rel="nofollow noreferrer">http://www.learnopengles.com/android-lesson-one-getting-started/</a> to get an OpenGL ES 2.0 context, then retrieve these capability infos via gl API calls, after all those done, I jump back to my main activity.</p>
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    1. COCheck for errors via `glGetError`. There must be a valid context around. Effectively, this means -- assuming you use the `GLSurfaceView` -- all calls to GL ES are happen inside the renderer thread.
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      1. POGet nothing when retriving OpengGL capabilities values via glget on android
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    2. COI found this similar question http://stackoverflow.com/questions/8442720/get-gpu-info-on-android-without-surfaceview But it also has no best answer.
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