Open Bug 719168 Opened 10 years ago Updated 3 years ago
Use async Read
Pixels into a PBO for faster Web GL with non-accel layers
WebGL on non-accelerated layers is slow because we have to glReadPixels every frame. A big part of why glReadPixels is slowing us down is that it's synchronous. There exists an asynchronous variant, reading the pixels into a PBO, and we should seriously consider that. It should fit well with OMTC. It would get us faster WebGL where we can't have accelerated layers. See: http://www.songho.ca/opengl/gl_pbo.html
Indeed. I believe it will also need its own form of multibuffering, though.
I am told that PBOs aren't available on Android.
Component: Graphics → Canvas: WebGL
OS: Linux → All
QA Contact: thebes → canvas.webgl
Hardware: x86_64 → All
Summary: Use async ReadPixels into a PBO for faster WebGL with non-accel layers with OMTC → Use async ReadPixels into a PBO for faster WebGL with non-accel layers
Mass tracking-e10s flag change. Filter bugmail on "2be0fcce-e36a-4e2c-aa80-0e3d33eb5406".
Priority: -- → P2
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