Why is my GPU showing as 'SwiftShader' or 'llvmpipe'?

Those are software renderers used when hardware acceleration is disabled or blocked. Enable hardware acceleration in your browser settings and restart, then rerun the test.

Is WebGL2 required for WebXR or 3D games?

Most modern 3D content prefers WebGL2 for better precision and performance. WebGL1 works for older scenes but may render incorrectly or run slower.

Can extensions being missing cause blank canvases?

Yes. Missing extensions like EXT_color_buffer_float or OES_texture_float can break certain shaders. Updating the browser and GPU drivers often restores them.

Browser Diagnostics

WebGL Test

Graphics support and performance

WebGL Support

Graphics capabilities and GPU performance

Not supported

🎨

Renderer

Unknown GPU

🏭

Vendor

Unknown GPU

📦

Version

Unknown

📐

Max Texture

0px

🔌

Extensions

What this WebGL test tells you

We check whether your browser exposes WebGL1 and WebGL2, identify the reported GPU class, vendor strings, max texture size, and extension count. Use this to confirm if hardware acceleration is active and whether a device is powerful enough for 3D canvases, dashboards, or WebXR experiences.

If the result shows 'Not supported' or a low FPS score, enable hardware acceleration and update your graphics drivers. Laptop battery saver modes and remote desktop sessions often force software rendering, so re-run the test after switching to a native session.

Fix a failing WebGL test

Follow our step-by-step guide for Chrome, Edge, Firefox, and Safari.

Troubleshoot WebGL →Hardware acceleration

FAQ

Why is my GPU showing as 'SwiftShader' or 'llvmpipe'?: Those are software renderers used when hardware acceleration is disabled or blocked. Enable hardware acceleration in your browser settings and restart, then rerun the test.
Is WebGL2 required for WebXR or 3D games?: Most modern 3D content prefers WebGL2 for better precision and performance. WebGL1 works for older scenes but may render incorrectly or run slower.
Can extensions being missing cause blank canvases?: Yes. Missing extensions like EXT_color_buffer_float or OES_texture_float can break certain shaders. Updating the browser and GPU drivers often restores them.