Sadly I can confirm that the Nexus 6 / Adreno 420 ships with only GLES 3.0 drivers. I have confirmed this via "eglQueryContext" with "EGL_CONTEXT_MAJOR_VERSION_KHR" and "EGL_CONTEXT_MINOR_VERSION_KHR" after creating a context with EGL 1.4 using the same major / minor versions in the attrib list. All the NVidia Tegra K1 devices I have work correctly w/ GLES 3.1 support. I'm working with compute sha