SDL: opengles2: fix comment about client-side arrays.

SDL Commits
1 
From 426c1f4b85bfdc3ce54b4200b5c5ffbfbe121cf9 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Wed, 19 Jan 2022 14:27:58 -0500
Subject: [PATCH] opengles2: fix comment about client-side arrays.

---
 src/render/opengles2/SDL_render_gles2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/render/opengles2/SDL_render_gles2.c b/src/render/opengles2/SDL_render_gles2.c
index 2df9d5463e6..1b25e735402 100644
--- a/src/render/opengles2/SDL_render_gles2.c
+++ b/src/render/opengles2/SDL_render_gles2.c
@@ -31,7 +31,8 @@
 /* WebGL doesn't offer client-side arrays, so use Vertex Buffer Objects
    on Emscripten, which converts GLES2 into WebGL calls.
    In all other cases, attempt to use client-side arrays, as they tend to
-   be faster. */
+   be dramatically faster when not batching, and about the same when
+   we are. */
 #if defined(__EMSCRIPTEN__)
 #define USE_VERTEX_BUFFER_OBJECTS 1
 #else