GL_EXT_float_blend support DetermineFloatBlendSupport was added to be able to set floatBlend to true if requirements are met. Essentially GL_EXT_float_blend complements GL_EXT_color_buffer_float by making any non-blendable formats blendable. Bug: angleproject:4291 Change-Id: I40d6bb7a93b8847a63de2d25c6a8dc411d6d8fbb Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2001479 Commit-Queue: Alexis Hétu <sugoi@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>