Runtime error: call to OpenGL ES API with no current context

[ptitseb]

Runtime error: call to OpenGL ES API with no current context

[liming0791]

@ptitSeb
Finally, I find the problem has nothing to do with the GLES 1.1 context creation.

I use GLSurfaceView in JAVA code to create GLES 1.1 context.

Although the error log shows every time when the app runs :

E/libEGL: call to OpenGL ES API with no current context (logged once per thread)
E/libEGL: call to OpenGL ES API with no current context (logged once per thread)

In fact the opengl functions can work fine.

The problem is some other bugs and have nothing to do with gl4es.

Sorry about that ...

Besides, I find that GL_TEXTURE_RECTANGLE_ARB does not work with gl4es, while GL_TEXTURE_2D works fine.

[ptitSeb]

I haven't checked the entire source code but I suspect the issue is with the GLES 1.1 context creation.

There is a limit of gl4es on Android for now: there is no real glX support, so gl4es is not abble to create the GLES 1.1 context by itself.
Most (all?) existing use of gl4es on Android use SDL or SDL2 and let it create that context.

So you have to create a GLES 1.1 context before calling any gl function in your Android app.

(the gl itself looks fine and should run in gl4es)