GL: exposing GL::Context::Flag::ForwardCompatible.

doc/changelog.dox

@@ -51,6 +51,11 @@ See also:
     and @ref DebugTools::CompareFileToImage comparators extending
     @ref DebugTools::CompareImage with convenient image file loading
 
+@subsubsection changelog-latest-new-gl GL library
+
+-   Exposing @ref GL::Context::Flag::ForwardCompatible through
+    @ref GL::Context::flags(), which was deliberately ignored before.
+
 @subsubsection changelog-latest-new-math Math library
 
 -   New @ref Math::CubicHermite class for cubic Hermite spline interpolation,

src/Magnum/GL/Context.cpp

@@ -890,6 +890,9 @@ Debug& operator<<(Debug& debug, const Context::Flag value) {
         /* LCOV_EXCL_START */
         #define _c(value) case Context::Flag::value: return debug << "GL::Context::Flag::" #value;
         _c(Debug)
+        #ifndef MAGNUM_TARGET_GLES
+        _c(ForwardCompatible)
+        #endif
         _c(NoError)
         #ifndef MAGNUM_TARGET_GLES2
         _c(RobustAccess)
@@ -904,6 +907,9 @@ Debug& operator<<(Debug& debug, const Context::Flag value) {
 Debug& operator<<(Debug& debug, const Context::Flags value) {
     return Containers::enumSetDebugOutput(debug, value, "GL::Context::Flags{}", {
         Context::Flag::Debug,
+        #ifndef MAGNUM_TARGET_GLES
+        Context::Flag::ForwardCompatible,
+        #endif
         Context::Flag::NoError,
         #ifndef MAGNUM_TARGET_GLES2
         Context::Flag::RobustAccess

src/Magnum/GL/Context.h

@@ -164,6 +164,16 @@ class MAGNUM_GL_EXPORT Context {
             Debug = GL_CONTEXT_FLAG_DEBUG_BIT_KHR,
             #endif
 
+            #ifndef MAGNUM_TARGET_GLES
+            /**
+             * Forward compatible context
+             * @see @ref isCoreProfile()
+             * @requires_gl Core/compatibility profile distinction and forward
+             *      compatibility applies only to desktop GL.
+             */
+            ForwardCompatible = GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT,
+            #endif
+
             /**
              * Context without error reporting
              * @requires_gl46 Extension @gl_extension{KHR,no_error}
@@ -489,8 +499,10 @@ class MAGNUM_GL_EXPORT Context {
          *
          * The result is cached, repeated queries don't result in repeated
          * OpenGL calls.
-         * @see @fn_gl{Get} with @def_gl_keyword{CORE_PROFILE_MASK}
-         * @requires_gl Not available on OpenGL ES or WebGL.
+         * @see @fn_gl{Get} with @def_gl_keyword{CORE_PROFILE_MASK},
+         *      @ref Flag::ForwardCompatible
+         * @requires_gl Core/compatibility profile distinction and forward
+         *      compatibility applies only to desktop GL.
          */
         bool isCoreProfile();
         #endif