+# The automatically detected source extensions are incorrect; EXT_sRGB provides
+# SRGB8_ALPHA8 only for renderbuffers while NV_sRGB_formats provides SRGB8 only
+# for immutable texture storage
+gles2:source none
+# Unsized sRGB internal formats are not available on OpenGL ES
+optional GL_SRGB_EXT
+optional GL_SRGB_ALPHA_EXT