kc3-lang/angle

2017-08-28T15:17:37

Add getUniform impl methods. This will let us remove some of the uniform data management code in the GL front-end, and simplify the GL back-end. It will also enable us to implement uniform data more efficiently in the D3D11 back-end, and probably Vulkan back-end later. This also implements a new impl method for the ProgramGL class to flag optimized-out uniforms as no longer used, post-link. This is important because otherwise the optimized uniforms get assigned valid locations, and then the getUniform calls are expected to succeed. We also use a workaround for uniform value queries for the GL back-end. It seems as though some drivers (seen on NVIDIA and AMD) may not properly clamp to the maximum representable integer value when querying out-of-range floating point values. Work around this by always calling the driver with the proper type and then casting the value in ANGLE. BUG=angleproject:1390 Change-Id: I03dc2382e7af52455c356a2bf3971a4d1bd46ec6 Reviewed-on: https://chromium-review.googlesource.com/616785 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>