LWJGL version3 drops my apps performance

Troubleshooting graphics
1

Good day all,

Yesterday I decided to try out the jme3-lwjgl3 version on my app, since I have been using lwjgl2.

After the change, my app started, however the performance of the app dropped drastically.

Does anyone here experience similar issues?

Sometimes the frames just drops to 0 fps. It seems like when I move the mouse, the frame rate drops. Proof of fps = 1

image
image1920×1080 490 KB

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2

I don’t have much experience using lwjgl3 yet myself (I plan to upgrade my apps soon too but haven’t gotten around to it yet)

However there were some recent version upgrades in regards to which version of lwjgl3 the engine uses in the latest 3.8 alpha version of jme.

So I’m curious to know what version of the engine you are using while experiencing this issue? And does reverting or advancing the engine version potentially fix it for you?

3

Also might be interesting to turn on JME’s basic and/or advanced profiling to see where the time is going.

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4

Here is my specs used:

Mar 06, 2025 8:50:18 AM com.jme3.system.JmeDesktopSystem initialize
INFO: Running on jMonkeyEngine 3.8.0-alpha4
 * Branch: HEAD
 * Git Hash: 75f0b73
 * Build Date: 2025-03-05
Mar 06, 2025 8:50:18 AM com.jme3.system.lwjgl.LwjglContext printContextInitInfo
INFO: LWJGL 3.3.3+5 context running on thread jME3 Main
 * Graphics Adapter: GLFW 3.4.0 Wayland X11 GLX Null EGL OSMesa monotonic shared
Mar 06, 2025 8:50:18 AM com.jme3.renderer.opengl.GLRenderer loadCapabilitiesCommon
INFO: OpenGL Renderer Information
 * Vendor: Intel
 * Renderer: Mesa Intel(R) Xe Graphics (TGL GT2)
 * OpenGL Version: 4.6 (Core Profile) Mesa 23.2.1-1ubuntu3.1~22.04.3
 * GLSL Version: 4.60
 * Profile: Core
Mar 06, 2025 8:50:19 AM com.jme3.audio.openal.ALAudioRenderer initOpenAL
INFO: Audio Renderer Information
 * Device: OpenAL Soft
 * Vendor: OpenAL Community
 * Renderer: OpenAL Soft
 * Version: 1.1 ALSOFT 1.23.1
 * Supported channels: 64
 * ALC extensions: ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE ALC_EXT_DEDICATED ALC_EXT_disconnect ALC_EXT_EFX ALC_EXT_thread_local_context ALC_SOFT_device_clock ALC_SOFT_HRTF ALC_SOFT_loopback ALC_SOFT_loopback_bformat ALC_SOFT_output_limiter ALC_SOFT_output_mode ALC_SOFT_pause_device ALC_SOFT_reopen_device
 * AL extensions: AL_EXT_ALAW AL_EXT_BFORMAT AL_EXT_DOUBLE AL_EXT_EXPONENT_DISTANCE AL_EXT_FLOAT32 AL_EXT_IMA4 AL_EXT_LINEAR_DISTANCE AL_EXT_MCFORMATS AL_EXT_MULAW AL_EXT_MULAW_BFORMAT AL_EXT_MULAW_MCFORMATS AL_EXT_OFFSET AL_EXT_source_distance_model AL_EXT_SOURCE_RADIUS AL_EXT_STATIC_BUFFER AL_EXT_STEREO_ANGLES AL_LOKI_quadriphonic AL_SOFT_bformat_ex AL_SOFTX_bformat_hoa AL_SOFT_block_alignment AL_SOFT_buffer_length_query AL_SOFT_callback_buffer AL_SOFTX_convolution_reverb AL_SOFT_deferred_updates AL_SOFT_direct_channels AL_SOFT_direct_channels_remix AL_SOFT_effect_target AL_SOFT_events AL_SOFT_gain_clamp_ex AL_SOFTX_hold_on_disconnect AL_SOFT_loop_points AL_SOFTX_map_buffer AL_SOFT_MSADPCM AL_SOFT_source_latency AL_SOFT_source_length AL_SOFT_source_resampler AL_SOFT_source_spatialize AL_SOFT_source_start_delay AL_SOFT_UHJ AL_SOFT_UHJ_ex