[Webkit-unassigned] [Bug 215141] Flickering on sedona.dev

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215141

--- Comment #16 from Dean Jackson <dino at apple.com> ---
I'm a bit confused as to what is going on with the page. On good frames the page simply does:

bufferSubData
clear
drawArrays (the lines)
drawArrays (the nodes)

On the frames that produce black, there is also a pass that:

createFramebuffer
createTexture
texImage2D
framebufferTexture2D
createRenderbuffer
viewport
scissor
createProgram
adds shaders and links
drawArrays
readPixels

The page is compiled, so it is hard to work out what is going on, but it seems to be coming from a call to three.js readRenderTargetPixels which I think comes from the three.js mouse/target picking code. This would explain why it happens as you move the mouse.

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