Updates for robust buffer access in ES 3.2.

src/Magnum/Context.cpp

@@ -881,7 +881,7 @@ Debug& operator<<(Debug& debug, const Context::Flag value) {
         #define _c(value) case Context::Flag::value: return debug << "Context::Flag::" #value;
         _c(Debug)
         _c(NoError)
-        #ifndef MAGNUM_TARGET_GLES
+        #ifndef MAGNUM_TARGET_GLES2
         _c(RobustAccess)
         #endif
         #undef _c
@@ -895,7 +895,7 @@ Debug& operator<<(Debug& debug, const Context::Flags value) {
     return Containers::enumSetDebugOutput(debug, value, "Context::Flags{}", {
         Context::Flag::Debug,
         Context::Flag::NoError,
-        #ifndef MAGNUM_TARGET_GLES
+        #ifndef MAGNUM_TARGET_GLES2
         Context::Flag::RobustAccess
         #endif
     });

src/Magnum/Context.h

@@ -154,15 +154,17 @@ class MAGNUM_EXPORT Context {
              */
             NoError = GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR,
 
-            #ifndef MAGNUM_TARGET_GLES
+            #ifndef MAGNUM_TARGET_GLES2
             /**
              * Context with robust access
-             * @requires_extension Extension @extension{ARB,robustness}
+             * @requires_gl45 Extension @extension{KHR,robustness} or
-             * @requires_es_extension Extension @extension{EXT,robustness}
+             *      @extension{ARB,robustness}
-             * @todo In ES available under glGetIntegerv(CONTEXT_ROBUST_ACCESS_EXT),
+             * @requires_gles32 Extension @extension{KHR,robustness} or
+             *      @extension{EXT,robustness}
+             * @todo In ES2 available under glGetIntegerv(CONTEXT_ROBUST_ACCESS_EXT),
              *      how to make it compatible?
              */
-            RobustAccess = GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
+            RobustAccess = GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT
             #endif
         };