Using OpenGL from the main thread on Android :: OPEN GL ES[SSISO Community]

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OPEN GL ES

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등록일:2020-01-11 11:49:24

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제목:Using OpenGL from the main thread on Android

I would like to call a GLES20 method when an item from the options menu is selected.

public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case R.id.clear:
            GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
            break;
        // ...
    }
}

This does not work since I am in the main thread and not in GLThread. It says:

call to OpenGL ES API with no current context (logged once per thread)

But what do I have to do to get things working?

1 Answer

I found the answer on my own:

public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case R.id.clear:
            // GLSurfaceView.queueEvent
            surface.queueEvent(new Runnable() {
                @Override
                public void run() {
                    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
                }
            });
            break;
        // ...
    }
}

[본문링크] Using OpenGL from the main thread on Android

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