Handle WEBGL_draw_buffers availability upfront #3
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| if (!gl.getExtension("WEBGL_draw_buffers")) { | ||
| console.warn("WEBGL_draw_buffers extension unavailable; rendering will fail."); | ||
| if (msg) { | ||
| msg.innerText = "WEBGL_draw_buffers is required for SEC3DEMO."; | ||
| } |
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When WEBGL_draw_buffers is unavailable, setupScene now returns early here (return at line 527), but main() still calls setKeyInputs, SEC3.renderer.init(), etc. (lines 203‑221) assuming scene, interactor, and lights were created. In browsers where the extension is missing, this path now triggers runtime exceptions (e.g., interactor.onKeyDown or renderer init using scene) instead of a graceful exit. The fail-fast should either halt the rest of main() or propagate a failure signal so the remaining initialization is skipped.
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@codex I think without drawbuffers the move is to fail gracefully. Let's check how common it would be that they wouldn't be available these days.
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Summary
- Made
setupScenereturn explicit success status for WebGL context acquisition, extension availability, and FBO initialization so failures exit early with clear messaging. demos/SEC3DEMO.jsL506-L636 - Updated
mainto skip key/input setup and renderer initialization when scene setup fails, preventing runtime errors when WEBGL_draw_buffers is missing. demos/SEC3DEMO.jsL203-L220
Testing
⚠️ Not run (not requested).
Summary
Testing
Codex Task