Workaround Safari WebGL issue: After successfully acquiring WebGL con… #13659
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…text on a canvas, calling .getContext() will always return that context independent of which 'webgl' or 'webgl2' context version was passed. See https://bugs.webkit.org/show_bug.cgi?id=222758. Fixes emscripten-core#13295
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kenrussell
reviewed
Mar 15, 2021
src/library_webgl.js
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| canvas.getContextSafariWebGL2Fixed = canvas.getContext; | ||
| canvas.getContext = function(ver, attrs) { | ||
| var gl = canvas.getContextSafariWebGL2Fixed(ver, attrs); | ||
| return ((ver == 'webgl') == (gl instanceof WebGLRenderingContext)) && gl; |
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Will this end up returning "false" for getContext if this fails, rather than null? I'd suggest writing this more clearly with if-statements.
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Surprised if that matters, but sure, adjusted to return null.
kripken
approved these changes
Mar 17, 2021
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…text on a canvas, calling .getContext() will always return that context independent of which 'webgl' or 'webgl2' context version was passed. See https://bugs.webkit.org/show_bug.cgi?id=222758. Fixes #13295