Support for ARB_robustness_isolation.

Easier than forgetting about what I read and then learning that all
again later.

doc/opengl-support.dox

@@ -237,7 +237,7 @@ GLSL 4.50                                   | done
 @extension{ARB,robustness}                  | done
 @extension3{KHR,texture_compression_astc_ldr,texture_compression_astc_hdr} (also in ES) | |
 @extension{KHR,texture_compression_astc_hdr} (also in ES) | |
-@extension{ARB,robustness_isolation}        | |
+@extension{ARB,robustness_isolation}        | done
 @extension{ARB,bindless_texture}            | |
 @extension{ARB,compute_variable_group_size} | |
 @extension{ARB,indirect_parameters}         | |

src/Magnum/Context.cpp

@@ -63,6 +63,8 @@ const std::vector<Extension>& Extension::extensions(Version version) {
         _extension(GL,AMD,shader_trinary_minmax),
         _extension(GL,ARB,robustness),
         _extension(GL,ARB,robustness_isolation),
+        _extension(GL,ARB,robustness_application_isolation),
+        _extension(GL,ARB,robustness_share_group_isolation),
         _extension(GL,ARB,bindless_texture),
         _extension(GL,ARB,compute_variable_group_size),
         _extension(GL,ARB,indirect_parameters),

src/Magnum/Extensions.h

@@ -146,6 +146,8 @@ namespace GL {
         _extension(GL,ARB,texture_view,                 GL210, GL430) // #124
         _extension(GL,ARB,vertex_attrib_binding,        GL210, GL430) // #125
         _extension(GL,ARB,robustness_isolation,         GL210,  None) // #126
+        _extension(GL,ARB,robustness_application_isolation, GL210, None) // #126
+        _extension(GL,ARB,robustness_share_group_isolation, GL210, None) // #126
         _extension(GL,ARB,ES3_compatibility,            GL330, GL430) // #127
         _extension(GL,ARB,explicit_uniform_location,    GL210, GL430) // #128
         _extension(GL,ARB,fragment_layer_viewport,      GL300, GL430) // #129

src/Magnum/Platform/Sdl2Application.h

@@ -436,7 +436,10 @@ class Sdl2Application::Configuration {
             Debug = SDL_GL_CONTEXT_DEBUG_FLAG,  /**< Create debug context */
 
             /** Create context with robust access */
-            RobustAccess = SDL_GL_CONTEXT_ROBUST_ACCESS_FLAG
+            RobustAccess = SDL_GL_CONTEXT_ROBUST_ACCESS_FLAG,
+
+            /** Create context with reset isolation */
+            ResetIsolation = SDL_GL_CONTEXT_RESET_ISOLATION_FLAG
         };
 
         /**
@@ -447,7 +450,7 @@ class Sdl2Application::Configuration {
          */
         #ifndef DOXYGEN_GENERATING_OUTPUT
         typedef Containers::EnumSet<Flag, SDL_GL_CONTEXT_DEBUG_FLAG|
-            SDL_GL_CONTEXT_ROBUST_ACCESS_FLAG> Flags;
+            SDL_GL_CONTEXT_ROBUST_ACCESS_FLAG|SDL_GL_CONTEXT_RESET_ISOLATION_FLAG> Flags;
         #else
         typedef Containers::EnumSet<Flag> Flags;
         #endif

src/Magnum/Renderer.h

@@ -1040,6 +1040,12 @@ class MAGNUM_EXPORT Renderer {
          * OpenGL calls. If OpenGL extension @extension{ARB,robustness} or ES
          * extension @es_extension{EXT,robustness} is not available, this
          * function always returns @ref ResetNotificationStrategy::NoResetNotification.
+         *
+         * For the reset notification to work, additionally to the extension
+         * support the context must be created with
+         * @ref Platform::Sdl2Application::Configuration::Flag::RobustAccess "Platform::*Application::Configuration::Flag::RobustAccess"
+         * flag.
+         *
          * @see @ref graphicsResetStatus(), @fn_gl{Get} with
          *      @def_gl{RESET_NOTIFICATION_STRATEGY_ARB}
          */
@@ -1084,7 +1090,22 @@ class MAGNUM_EXPORT Renderer {
          * Reset causes all context state to be lost. If OpenGL extension
          * @extension{ARB,robustness} or ES extension @es_extension{EXT,robustness}
          * is not available, this function always returns @ref GraphicsResetStatus::NoError.
-         * @see @ref resetNotificationStrategy(), @fn_gl_extension{GetGraphicsResetStatus,ARB,robustness}
+         *
+         * For the reset notification to work, additionally to the extension
+         * support the context must be created with
+         * @ref Platform::Sdl2Application::Configuration::Flag::RobustAccess "Platform::*Application::Configuration::Flag::RobustAccess"
+         * flag.
+         *
+         * If the reset occurs, @extension{ARB,robustness_isolation}
+         * extension is supported and context is created with
+         * @ref Platform::Sdl2Application::Configuration::Flag::ResetIsolation "Platform::*Application::Configuration::Flag::ResetIsolation",
+         * advertised support for @extension{ARB,robustness_application_isolation}
+         * indicates that no other application on the system will be affected
+         * by the graphics reset. Advertised support for
+         * @extension{ARB,robustness_share_group_isolation} indicates that no
+         * other share group will be affected by the graphics reset.
+         * @see @ref resetNotificationStrategy(),
+         *      @fn_gl_extension{GetGraphicsResetStatus,ARB,robustness}
          */
         static GraphicsResetStatus graphicsResetStatus();