webrtc err-glUseProgram: GLES20 error: 1282

[jojosoftcj]

I am developing a voice and video chat project using WebRTC. During testing, some devices encounter the following error during video calls:
EglRenderer: android.opengl.GLException: glUseProgram: GLES20 error: 1282
at org.webrtc.GlUtil.checkNoGLES2Error(GlUtil.java:37)
at org.webrtc.GlShader.useProgram(GlShader.java:120)
at org.webrtc.GlGenericDrawer.prepareShader(GlGenericDrawer.java:249)
at org.webrtc.GlGenericDrawer.drawOes(GlGenericDrawer.java:159)
at org.webrtc.GlRectDrawer.drawOes(GlRectDrawer.java:14)
at org.webrtc.VideoFrameDrawer.drawTexture(VideoFrameDrawer.java:40)
at org.webrtc.VideoFrameDrawer.drawFrame(VideoFrameDrawer.java:213)
at org.webrtc.EglRenderer.renderFrameOnRenderThread(EglRenderer.java:664)
at org.webrtc.EglRenderer.$r8$lambda$e9wh5aG8guAmVhgqcG9XXkddr0k(Unknown Source:0)
at org.webrtc.EglRenderer$$ExternalSyntheticLambda5.run(D8$$SyntheticClass:0)
at android.os.Handler.handleCallback(Handler.java:955)
at android.os.Handler.dispatchMessage(Handler.java:102)
at org.webrtc.EglRenderer$HandlerWithExceptionCallback.dispatchMessage(EglRenderer.java:103)
at android.os.Looper.loopOnce(Looper.java:206)
at android.os.Looper.loop(Looper.java:296)
at android.os.HandlerThread.run(HandlerThread.java:67)
How can I solve this issue?

[Shriharsh-Deshmukh]

To resolve the GLES20 error: 1282 in your WebRTC project, follow these steps:

1. Update WebRTC: Ensure you're on the latest stable WebRTC build. Older versions may have unresolved compatibility issues with specific Android devices.

2. Context Management: Implement proper handling for OpenGL context loss. This often happens during activity/fragment lifecycle changes. You can catch and reinitialize the EGL context in the onSurfaceCreated and onSurfaceChanged methods.

3. Texture Scaling: Reduce the resolution of textures being rendered. Devices with limited GPU resources may fail when processing high-res textures.

4. GLES Compatibility: Add conditional checks to switch between GLES2 and GLES3 rendering paths, depending on the device’s supported features.

5. Device-Specific Fixes: Gather logs from affected devices using adb logcat, and apply device-specific workarounds if needed (e.g., disabling specific shaders or adjusting buffer sizes).

These steps should mitigate the GLES error and stabilize video rendering across all devices.