Text object renders as a solid black rectangle on specific Android devices (Samsung Galaxy A04e) when WebGPU is enabled

[gamesgouki]

Checks

• I have read and understand the bug report guidelines
• I checked for existing similar reports to avoid submitting a duplicate
• I verified the issue occurs in the latest beta release to avoid submitting an issue that has already been resolved

Problem description

When using the native Text object and previewing via Remote Preview or exporting to HTML5, the Text object renders as a solid black rectangle on certain Android devices. If the object is resized, the black rectangle scales accordingly. Disabling WebGPU in the Project Properties (Advanced Settings -> WebGPU -> No) resolves the issue, forcing the engine to use WebGL. This suggests a WebGPU rendering issue or a graphics driver conflict on specific mobile GPUs (PowerVR GE8320).

Upload a project

text.issue.zip

Steps to reproduce

1. Create a new empty project.
2. Add a native Text object to the default layout and type some text.
3. Ensure WebGPU is set to "Auto" or "Yes" in Project Properties.
4. Use Remote Preview or export to HTML5 and open it on the affected device.

Observed result

The text is invisible and the bounding box of the Text object renders as a solid black rectangle. Resizing the object scales the black rectangle.

Expected result

The text should render normally and be readable.

Affected platforms

Android

Affected browsers

Chrome

Last unaffected release (including beta releases)

r476-4

First affected release (including beta releases)

r477

Additional remarks

Device: Samsung Galaxy A04e (SM-A042M)
OS: Android 14, One UI 6.1
GPU: PowerVR GE8320
Browser: Chrome / Android System WebView
Platform: HTML5 Export / Remote Preview

Platform information

Platform information
Product: Construct 3 r487.2 (stable)
Browser: Chrome 149.0.7827.54
Browser engine: Chromium
Context: browser
Operating system: Windows 10
Device type: desktop
Device pixel ratio: 1
Logical CPU cores: 12
Approx. device memory: 32 GB
User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36
Language setting: en-US

Local storage
Storage quota (approx): 11 GB
Storage usage (approx): 615 MB (5.7%)
Persistent storage: No

Browser support notes
This list contains missing features that are not required, but could improve performance or user experience if supported.

Nothing is missing. Everything is OK!
WebGPU information
Renderer: WebGPU
Compatibility mode: no
Supports GPU profiling: yes
Major performance caveat: no
Maximum texture size: 16384
Adapter vendor: nvidia
Adapter architecture: blackwell
Adapter device: (unavailable)
Adapter description: (unavailable)
Adapter type: (unavailable)
Adapter backend: (unavailable)
Adapter features:

bgra8unorm-storage
clip-distances
core-features-and-limits
depth-clip-control
depth32float-stencil8
dual-source-blending
float32-blendable
float32-filterable
indirect-first-instance
primitive-index
rg11b10ufloat-renderable
shader-f16
subgroups
texture-component-swizzle
texture-compression-bc
texture-compression-bc-sliced-3d
texture-formats-tier1
texture-formats-tier2
timestamp-query
Audio information
System sample rate: 48000 Hz
Output channels: 2
Output interpretation: speakers
Supported decode formats:

WebM Opus (audio/webm;codecs=opus)
WebM Vorbis (audio/webm;codecs=vorbis)
MPEG-4 Opus (audio/mp4;codecs=opus)
MPEG-4 AAC (audio/mp4;codecs=mp4a.40.2)
MP3 (audio/mpeg)
FLAC (audio/flac)
PCM WAV (audio/wav;codecs=1)
Supported encode formats:

WebM Opus (audio/webm;codecs=opus)
MPEG-4 Opus (audio/mp4;codecs=opus)
MPEG-4 AAC (audio/mp4;codecs=mp4a.40.2)
Video information
Supported decode formats:

WebM AV1 (video/webm;codecs=av01.0.00M.08)
WebM VP9 (video/webm;codecs=vp9)
WebM VP8 (video/webm;codecs=vp8)
MPEG-4 AV1 (video/mp4;codecs=av01.0.00M.08)
MPEG-4 H.265 (video/mp4;codecs=hev1.1.2.L93.B0)
MPEG-4 H.264 (video/mp4;codecs=avc1.420034)
Supported encode formats:

WebM AV1 (video/webm;codecs=av01.0.00M.08)
WebM VP9 (video/webm;codecs=vp9)
WebM VP8 (video/webm;codecs=vp8)
WebM H.264 (video/webm;codecs=avc1.420034)
MPEG-4 AV1 (video/mp4;codecs=av01.0.00M.08)
MPEG-4 VP9 (video/mp4;codecs=vp9)
MPEG-4 H.265 (video/mp4;codecs=hev1.1.2.L93.B0)
MPEG-4 H.264 (video/mp4;codecs=avc1.420034)

[AshleyScirra]

Please provide the platform information for all affected Android devices you've identified. That's what we actually need for this report, but it looks like you provided information for a Windows system.

[gamesgouki]

Platform information
Product: Construct 3 r487.2 (stable)
Browser: Chrome 149.0.7827.59
Browser engine: Chromium
Context: browser
Operating system: Android 14.0.0
Device type: mobile
Device pixel ratio: 1.875
Logical CPU cores: 8
Approx. device memory: 2 GB
User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Mobile Safari/537.36
Language setting: en-US

Local storage
Storage quota (approx): 10 GB
Storage usage (approx): 7.1 MB (0.1%)
Persistent storage: No

Browser support notes
This list contains missing features that are not required, but could improve performance or user experience if supported.

Nothing is missing. Everything is OK!
WebGPU information
Renderer: WebGPU
Compatibility mode: yes
Supports GPU profiling: no
Major performance caveat: no
Maximum texture size: 8192
Adapter vendor: img-tec
Adapter architecture: rogue
Adapter device: (unavailable)
Adapter description: (unavailable)
Adapter type: (unavailable)
Adapter backend: (unavailable)
Adapter features:

float32-blendable
texture-component-swizzle
texture-compression-astc
texture-compression-etc2
Audio information
System sample rate: 48000 Hz
Output channels: 2
Output interpretation: speakers
Supported decode formats:

WebM Opus (audio/webm;codecs=opus)
WebM Vorbis (audio/webm;codecs=vorbis)
MPEG-4 Opus (audio/mp4;codecs=opus)
MPEG-4 AAC (audio/mp4;codecs=mp4a.40.2)
MP3 (audio/mpeg)
FLAC (audio/flac)
PCM WAV (audio/wav;codecs=1)
Supported encode formats:

WebM Opus (audio/webm;codecs=opus)
MPEG-4 Opus (audio/mp4;codecs=opus)
MPEG-4 AAC (audio/mp4;codecs=mp4a.40.2)
Video information
Supported decode formats:

WebM AV1 (video/webm;codecs=av01.0.00M.08)
WebM VP9 (video/webm;codecs=vp9)
WebM VP8 (video/webm;codecs=vp8)
MPEG-4 AV1 (video/mp4;codecs=av01.0.00M.08)
MPEG-4 H.265 (video/mp4;codecs=hev1.1.2.L93.B0)
MPEG-4 H.264 (video/mp4;codecs=avc1.420034)
Supported encode formats:

WebM VP9 (video/webm;codecs=vp9)
WebM VP8 (video/webm;codecs=vp8)
WebM H.264 (video/webm;codecs=avc1.420034)
MPEG-4 VP9 (video/mp4;codecs=vp9)
MPEG-4 H.264 (video/mp4;codecs=avc1.420034)

[AshleyScirra]

OK, thanks for providing that. It looks like this device is now using WebGPU in compatibility mode, which is newly added in the r487 release cycle. Presumably there's a bug affecting that mode. All we can really do is block WebGPU from "img-tec rogue" devices as that's what's listed in the platform information. This is done for the next beta where you can check again to verify it's working correctly (as it should fall back to WebGL). If any other devices are still affected please provide the same information so we can also review those.

[gamesgouki]

The issue was resolved in the latest version, r487-3. If you need any additional information, please let me know. And thanks for the fix!

[AshleyScirra]

Thanks for confirming, likely is a graphics driver bug, but those devices should be able to continue working fine with WebGL instead of WebGPU.