Added SDL_VIDEO_OPENGL_ES2 to the SDL_config.h templates (Thanks, Kerim!).
diff --git a/include/SDL_config.h.cmake b/include/SDL_config.h.cmake
index 500e72a..f9a9ab9 100644
--- a/include/SDL_config.h.cmake
+++ b/include/SDL_config.h.cmake
@@ -288,6 +288,7 @@
/* Enable OpenGL support */
#cmakedefine SDL_VIDEO_OPENGL @SDL_VIDEO_OPENGL@
#cmakedefine SDL_VIDEO_OPENGL_ES @SDL_VIDEO_OPENGL_ES@
+#cmakedefine SDL_VIDEO_OPENGL_ES2 @SDL_VIDEO_OPENGL_ES2@
#cmakedefine SDL_VIDEO_OPENGL_BGL @SDL_VIDEO_OPENGL_BGL@
#cmakedefine SDL_VIDEO_OPENGL_CGL @SDL_VIDEO_OPENGL_CGL@
#cmakedefine SDL_VIDEO_OPENGL_GLX @SDL_VIDEO_OPENGL_GLX@
diff --git a/include/SDL_config.h.in b/include/SDL_config.h.in
index 7bb1283..551c8b3 100644
--- a/include/SDL_config.h.in
+++ b/include/SDL_config.h.in
@@ -289,6 +289,7 @@
/* Enable OpenGL support */
#undef SDL_VIDEO_OPENGL
#undef SDL_VIDEO_OPENGL_ES
+#undef SDL_VIDEO_OPENGL_ES2
#undef SDL_VIDEO_OPENGL_BGL
#undef SDL_VIDEO_OPENGL_CGL
#undef SDL_VIDEO_OPENGL_EGL