Add test that context creation reclaims vram to prevent creation fail… #2984
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kenrussell
reviewed
Dec 19, 2019
| assertMsg(width >= minSize, | ||
| ` drawingBufferWidth (${width}) should be >= ${minSize}`); | ||
| assertMsg(height >= minSize, | ||
| ` drawingBufferHeight (${height}) should be >= ${minSize}`); |
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Chromium's WebGL implementation handles the scenario of users allocating many WebGL contexts with large back buffers by scaling down the size of newly created back buffers, rather than losing older contexts. We've tried in the past to lift the global limits on the amount of back buffer VRAM that can be allocated, but have never succeeded; crashes have been seen inside OpenGL drivers on various platforms, instead of GL_OUT_OF_MEMORY being reported. I'm not sure that requiring that newly-allocated contexts have the same back buffer size as the originally-allocated context is an invariant we should enforce; let's discuss in real time on tomorrow's working group conference call.
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…ure.
This would be a nice invariant to have, but we can talk about how much we want to guarantee here.