Currently we query the backbuffer's age in `RenderCompositorEGL::BeginFrame()`. This makes the driver dequeue a backbuffer, may cause the driver to block until a buffer is available. (See bug 1668878.) We should delay calling this until necessary (in `Renderer::composite_simple()`) to increase the chances that the backbuffer is available.
Bug 1670014 Comment 0 Edit History
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Currently we query the backbuffer's age in `RenderCompositorEGL::BeginFrame()`. This makes the driver dequeue a backbuffer, which may cause the driver to block until a buffer is available. (See bug 1668878.) We should delay calling this until necessary (in `Renderer::composite_simple()`) to increase the chances that the backbuffer is available.