# OpenGLES 3 (Alpha testing) **URL:** \ **Category:** Announcements\ **Created:** [February 8, 2021, 12:23pm UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495 "2021-02-08T12:23:45Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [February 8, 2021, 12:23pm UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/1 "2021-02-08T12:23:45Z")
We’ve now updated our OpenGL backend to support OpenGLES 3 for mobile devices. For HTML5, this means support for WebGL 2 (currently Chrome + Firefox). The glsl shader model is `300 es` In order to support older devices/browsers, there are some runtime fallbacks: - Html5 has a fallback to WebGL 1 - Android has a fallback to OpenGLES 2 For desktop, we target OpenGL 3.3 and glsl shader model `140` # Texture format support Using the higher OpenGL version will enable support for ETC2 on Android, and ASTC on iOS. # Where do I get it? Download from our [alpha page](http://d.defold.com/alpha/) # Feedback We’d like to know if you encounter any cases where the build doesn’t work for one reason or another. Please specify platform, and OpenGL version ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [February 8, 2021, 12:23pm UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/2 "2021-02-08T12:23:59Z")
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**Author:** ![Pkeod](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/pkeod/32/606_2.png) [@Pkeod](https://forum.defold.com/u/Pkeod)\ **Post date:** [February 9, 2021, 5:01am UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/3 "2021-02-09T05:01:14Z")
Maybe the profiler should list the currently used OpenGLES / WebGL versions? It being available in system info may be useful as well. We could use it to dynamically switch problem materials potentially? I tested some projects and did not notice issues. Spector.js shows version being used, but that might not be reliable? ![html](https://forum-defold.b-cdn.net/uploads/default/original/3X/f/5/f5055e187f55c21860ec626e541d4e8a7970e8b6.png) ---
**Author:** ![aglitchman](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/aglitchman/32/19432_2.png) [@aglitchman](https://forum.defold.com/u/aglitchman)\ **Post date:** [February 9, 2021, 5:51pm UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/4 "2021-02-09T17:51:25Z")
I prepared a demo project to test possible cases. - **[Source code](https://github.com/aglitchman/defold-webgl1-fallback-test)** - **[Online demo](https://aglitchman.github.io/defold-webgl1-fallback-test/)**. How it looks if it runs without errors: > **Windows 10 x64 - Screenshot** > > ![image](https://forum-defold.b-cdn.net/uploads/default/original/3X/b/c/bc3b97b34e54981c7c8d5aefd4b960a0de60fb8b.png) _By the way, CI can’t build the demo on the “xenial” distro - [check the logs](https://travis-ci.com/github/aglitchman/defold-webgl1-fallback-test/builds/216563091). I had to change “distro” to “bionic” to build it. Previous versions of bob.jar run well on “xenial”._ Issues: 1. DF fonts don’t work in the HTML5 build on WebGL 2.0. You can see the errors in your browser log. Additionally, I built .apk and tested the demo on my Samsung S10e (i.e. on a OpenGLES 3.0 device). Errors are almost the same: > **Samsung S10e - adb logcat** > > ![image](https://forum-defold.b-cdn.net/uploads/default/original/3X/e/8/e8a48ff5848d043f7de03d077ccf2447729477f5.png) 1. The HTML5 demo doesn’t run on Tecno Pop 2F (Mali-400 GPU, WebGL 1.0, latest Chrome 88). Possible source of the issue is that the browser supports WebGL 2.0 (i.e. API exists), but the device doesn’t. > **Tecno Pop 2F - Chrome Remote Inspector logs** > > ![180%20ALPHA](https://forum-defold.b-cdn.net/uploads/default/original/3X/c/4/c486c5d4856bb0f0474f913128759503cfa5e647.png) APK fails to run, too: > **Tecno Pop 2F - adb logcat** > > ![image](https://forum-defold.b-cdn.net/uploads/default/original/3X/3/5/35888477523210796f8981543b999204418d0b8c.png) * * * Additionally, I built the demo on Defold 1.2.179 - html5 (and apk) runs fine on all my devices. ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [February 10, 2021, 7:33am UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/5 "2021-02-10T07:33:58Z")
Thank you @aglitchman! This is some really good info. \*) I’m not sure why bob suddenly wouldn’t work on xenial, since we didn’t change build server (ubuntu-18) since 2019. 🤔 1. Thanks! I’ll fix the shader and make a note of the `sample` keyword in the migration notes. 2. This is trickier. Not sure how to reproduce here. Is there a way to create a virtual device like that fails like this in Android Studio? I guess worst case, I’ll make a special build with lots of extra logging. ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [February 12, 2021, 10:38am UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/6 "2021-02-12T10:38:22Z")
I’ve updated the [alpha build](https://d.defold.com/alpha/) with some fixes: - [Issue 5551](https://github.com/defold/defold/issues/5551) - Added “display.display\_device\_info” to enable printout of the selected GPU device info at startup (ping @Pkeod) - [Issue 5554](https://github.com/defold/defold/issues/5554) - Fixed editor compilation of shaders (for build-and-run) (and also the `font-df.fp` usage of the `sample` keyword.) @aglitchman I’m currently preparing a branch [here](https://github.com/defold/defold/actions/runs/560722660) with lots of extra debug prints for Android, to see if we can pinpoint the issue for the Tecno Pop device. ---
**Author:** ![Pkeod](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/pkeod/32/606_2.png) [@Pkeod](https://forum.defold.com/u/Pkeod)\ **Post date:** [February 12, 2021, 11:01am UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/7 "2021-02-12T11:01:55Z")
> [@Mathias\_Westerdahl](#): > > display.display\_device\_info Here is a sample of output from HTML5 build. Useful! ![output](https://forum-defold.b-cdn.net/uploads/default/original/3X/4/1/414b61286e8340cc3194c85210fb9af250393049.png) ---
**Author:** ![aglitchman](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/aglitchman/32/19432_2.png) [@aglitchman](https://forum.defold.com/u/aglitchman)\ **Post date:** [February 12, 2021, 11:31am UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/8 "2021-02-12T11:31:33Z")
> [@Mathias\_Westerdahl](#): > > @aglitchman I’m currently preparing a branch [here](https://github.com/defold/defold/actions/runs/560722660) with lots of extra debug prints for Android, to see if we can pinpoint the issue for the Tecno Pop device. Thank you! I’ll PM you logs from the device. ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [February 15, 2021, 1:10pm UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/9 "2021-02-15T13:10:46Z")
I just pushed the latest fixes for the OpenGLES update to CI and it’s currently building a new alpha build (done in ~45minutes). After that, those of you that wanted the OpenGLES 2 fallbacks, please take a moment to verify that it still works for you with the latest alpha. Edit: It’s up now on [https://d.defold.com/alpha/](https://d.defold.com/alpha/) ---
**Author:** ![dmitriy](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/dmitriy/32/18452_2.png) [@dmitriy](https://forum.defold.com/u/dmitriy)\ **Post date:** [February 16, 2021, 7:59pm UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/10 "2021-02-16T19:59:17Z")
![38](https://forum-defold.b-cdn.net/uploads/default/original/3X/2/f/2fd78f0aefeb1e72140b1f751d0e75aa0bf851db.png) This is how sprites & tiles look for me in alpha. ![39](https://forum-defold.b-cdn.net/uploads/default/original/3X/3/5/35ac07c8c290aac6a5150f2000112e4553bc63b8.png) ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [February 17, 2021, 6:15am UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/11 "2021-02-17T06:15:41Z")
Ah, yes theres another fix coming for that too. Edit: It’s live on the [d.defold.com/alpha](http://d.defold.com/alpha) now ---
**Author:** ![gianmichele](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/gianmichele/32/24028_2.png) [@gianmichele](https://forum.defold.com/u/gianmichele)\ **Post date:** [February 17, 2021, 7:59am UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/12 "2021-02-17T07:59:12Z")
My game is probably not the most demanding in terms of opengl, but is using DF and bitmap font extensively. Everything is working fine, including webgl fallback. ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [February 17, 2021, 8:02am UTC](https://forum.defold.com/t/opengles-3-alpha-testing/67495/13 "2021-02-17T08:02:31Z")
Thanks for testing!