They are what prevented it being a required part of ES3 I believe. See the "IP Status" section here https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_c

They are what prevented it being a required part of ES3 I believe. See the "IP Status" section here https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_color_buffer_float.txt https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_c... Individual vendors can of course expose that extension, provided they have a license. Edit: it looks like ES3.2 requires support for floating-point framebuffers, so presumably the patent issue has been resolved somehow.