extension EXT_texture_sRGB
+# 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
+# Specific compressed formats were not promoted to core
+ignore GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
+ignore GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
+ignore GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
+ignore GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
+# Generic compressed formats are not available on OpenGL ES
+ignore GL_COMPRESSED_SRGB_EXT
+ignore GL_COMPRESSED_SRGB_ALPHA_EXT
+# Luminance formats are deprecated
+ignore GL_COMPRESSED_SLUMINANCE_EXT
+ignore GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
+optional GL_SLUMINANCE_EXT
+optional GL_SLUMINANCE_ALPHA_EXT
+optional GL_SLUMINANCE8_EXT
+optional GL_SLUMINANCE8_ALPHA8_EXT