glGetShaderInfoLog returns empty string (android)

Question

I am modifying the version of the android version of the 2d texture example from OpenGl ES2.0 programming guide to change the fragment shader. this is written in pure Java a

Answer 1

I had the same problem.

1. Make sure you have the following in ApplicationManufest.xml:

   <uses-feature android:glEsVersion="0x00020000" android:required="true" />

2. Call this after initializing a GLSurfaceView

glSurfaceView.SetEGLContextClientVersion(2);

Answer 2

You're suffering from a bug. I worked around by using the old GL ES 2.0 bindings to get a functioning glGetShaderInfoLog. Like this:

import com.badlogic.gdx.backends.android.AndroidGL20;
...
AndroidGL20 gl2 = new AndroidGL20();
Log.e(TAG, gl2.glGetShaderInfoLog(shader));

I still use the standard GLES20 wrapper library for everything else, so this was simple to drop into my codebase. The two wrappers apparently can coexist without any problems.

Answer 3

Just incase anyone does find this question as they have encountered the same problem, the only way I have found to "get around it" is to compile the shader with another App (such as Rendermonkey). Not ideal, but it got me further in my project!