Update framebuffer bindings logic. #316
Merged
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This patch adds tracking for separate read/draw framebuffer bindings, which is a new feature in WebGL 2.0 and is needed for APIs like BlitFramebuffer. It also adds support for framebufferTextureLayer, another API used in WebGL 2.0.
@dhritzkiv FYI, a couple other small improvements planned after this. There's still a huge number of missing features, including proper support for the new texture formats.