Avoid UB in VertexAttributeTestES3.DrawWithUnalignedData The test uses a signed normalized vertex attribute, which requires a floating point vertex input. Bug: angleproject:7001 Fixed: angleproject:7068 Change-Id: I97afc97b03a58130e0d6ee63ec7ee3e44f1e0230 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5105194 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>