why is GL_ARB_texture_env_combine different from EXT?

diff --git a/src/mesa/drivers/glide/fxdd.c b/src/mesa/drivers/glide/fxdd.c
index 30e5fe0..f7db789 100644 (file)
--- a/src/mesa/drivers/glide/fxdd.c
+++ b/src/mesa/drivers/glide/fxdd.c
@@ -1940,6 +1940,7 @@ fxDDInitExtensions(GLcontext * ctx)
    }
 
    if (fxMesa->HaveCmbExt) {
+      _mesa_enable_extension(ctx, "GL_ARB_texture_env_combine");
       _mesa_enable_extension(ctx, "GL_EXT_texture_env_combine");
    }