eglwrap: Add comment describing why we don't lookup into libGLESv2.so

A user recently asked me why we didn't perform lookups in
libGLESv2.so, (instead of just libEGL.so). I actually made the mistake
of writing code to do that before I realized the answer.

Adding the answer in a comment here should help me avoid making that
mistake again.

diff --git a/eglwrap.c b/eglwrap.c
index 43b07babcf049a113a6729a1e41086e41b33a431..8317334c8595bca959f5e55101fb5dc844458fd4 100644 (file)
--- a/eglwrap.c
+++ b/eglwrap.c
@@ -48,6 +48,15 @@
 } while (0);
 
 
+/* Note: We only need to perform a lookup in libEGL.so.1, (not
+ * libGLESv2.so.2). This is because the functions we wrap, (currently
+ * wglSwapBufers, eglGetProcAddress, and eglMakeCurrent), exist only
+ * in libEGL.so.1.
+ *
+ * If we *do* later add wrappers for functions that lib in
+ * libGLESv2.so.2 then those might more naturally live in a file named
+ * gleswrap.c or so.
+ */
 static void *
 eglwrap_lookup (char *name)
 {