lib/glesv2: add some doc to `GLError`

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/glesv2/glesv2.nit b/lib/glesv2/glesv2.nit
index 814ec68..54a9fcd 100644 (file)
--- a/lib/glesv2/glesv2.nit
+++ b/lib/glesv2/glesv2.nit
@@ -328,8 +328,13 @@ end
 # An OpenGL ES 2.0 error code
 extern class GLError
        super GLEnum
+
+       # Is there no error?
        fun is_ok: Bool do return is_no_error
+
+       # Is this not an error?
        fun is_no_error: Bool `{ return recv == GL_NO_ERROR; `}
+
        fun is_invalid_enum: Bool `{ return recv == GL_INVALID_ENUM; `}
        fun is_invalid_value: Bool `{ return recv == GL_INVALID_VALUE; `}
        fun is_invalid_operation: Bool `{ return recv == GL_INVALID_OPERATION; `}