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We already skip this for API_OPENGL_CORE; ES2+ is very similar. The primary user of the swrast context is GL_SELECT and GL_FEEDBACK, which have never existed in ES. This saves approximately 18MB of memory in GLBenchmark 2.7 Egypt (ES2). No regressions in es3conform on Ivybridge. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Matt Turner <mattst88@gmail.com> Reviewed-by: Chad Versace <chad.versace@linux.intel.com> Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>