So here I was again, trying to figure out a way to get opengl infos like max texture size, max uniform vectors, max vertex attributes, etc. for several android devices. Technically you could just use a small getter:
1 2 3 4 5 6 7 | Log.v("GL_MAX_TEXTURE_UNITS:", glGetIntegerv(GLES10.GL_MAX_TEXTURE_UNITS)); public static int glGetIntegerv(int value) { size = IntBuffer.allocate(1); GLES10.glGetIntegerv(value, size); return size.get(0); } |
The problem was that on many devices the the returned number would always be 0. That’s because there hasn’t been created an opengl context yet. As suggested on Stackoverflow you could create a GLSurfaceView, add a renderer which could read the required infos by adding the glsurfaceview to the actual main active view and simply remove itself when done. In order to get opengles 1.0 and opengles 2.0 infos you would need to create two surfacesviews with different opengl versions. The following example looks a bit complicated, because I use fragments which i need to update on the main thread after I got all the infos I wanted. A full example is on github.
0 Comments
1 Pingback