Implemented KHR_no_error.

doc/opengl-support.dox

@@ -248,7 +248,7 @@ Extension                                   | Status
 @extension{ARB,transform_feedback_overflow_query} | |
 @extension{KHR,blend_equation_advanced}     | done
 @extension3{KHR,blend_equation_advanced_coherent,blend_equation_advanced} | done
-@extension{KHR,no_error}                    | |
+@extension{KHR,no_error}                    | done
 
 @subsection opengl-support-extensions-vendor Vendor OpenGL extensions
 
@@ -384,7 +384,7 @@ Extension                                   | Status
 @es_extension{KHR,robustness}               | |
 @es_extension{KHR,robust_buffer_access_behavior} | done (nothing to do)
 @es_extension{KHR,context_flush_control}    | |
-@es_extension2{KHR,no_error,no_error}       | |
+@es_extension2{KHR,no_error,no_error}       | done
 @es_extension2{NV,read_buffer_front,NV_read_buffer} | done
 @es_extension2{NV,read_depth,NV_read_depth_stencil} | done
 @es_extension2{NV,read_stencil,NV_read_depth_stencil} | done

src/Magnum/Context.cpp

@@ -812,6 +812,7 @@ Debug& operator<<(Debug& debug, const Context::Flag value) {
     switch(value) {
         #define _c(value) case Context::Flag::value: return debug << "Context::Flag::" #value;
         _c(Debug)
+        _c(NoError)
         #ifndef MAGNUM_TARGET_GLES
         _c(RobustAccess)
         #endif

src/Magnum/Context.h

@@ -136,6 +136,13 @@ class MAGNUM_EXPORT Context {
             Debug = GL_CONTEXT_FLAG_DEBUG_BIT_KHR,
             #endif
 
+            /**
+             * Context without error reporting
+             * @requires_extension Extension @extension{KHR,no_error}
+             * @requires_es_extension Extension @es_extension2{KHR,no_error,no_error}
+             */
+            NoError = GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR,
+
             #ifndef MAGNUM_TARGET_GLES
             /**
              * Context with robust access

src/Magnum/Platform/GlfwApplication.h

@@ -290,7 +290,7 @@ class GlfwApplication::Configuration {
         /**
          * @brief Context flag
          *
-         * @see @ref Flags, @ref setFlags()
+         * @see @ref Flags, @ref setFlags(), @ref Context::Flag
          */
         enum class Flag: Int {
             #ifdef GLFW_CONTEXT_NO_ERROR

src/Magnum/Platform/magnum-info.cpp

@@ -269,11 +269,12 @@ MagnumInfo::MagnumInfo(const Arguments& arguments): Platform::WindowlessApplicat
     Context& c = Context::current();
 
     Debug() << "Context flags:";
-    #ifndef MAGNUM_TARGET_GLES
-    for(const auto flag: {Context::Flag::Debug, Context::Flag::RobustAccess})
-    #else
-    for(const auto flag: {Context::Flag::Debug})
-    #endif
+    for(const auto flag: {Context::Flag::Debug,
+                          Context::Flag::NoError,
+                          #ifndef MAGNUM_TARGET_GLES
+                          Context::Flag::RobustAccess
+                          #endif
+                          })
         if(c.flags() & flag) Debug() << "   " << flag;
 
     Debug() << "Supported GLSL versions:";

src/MagnumExternal/OpenGL/GL/extensions.txt

@@ -33,3 +33,4 @@ extension KHR_texture_compression_astc_ldr      optional
 extension KHR_texture_compression_astc_hdr      optional
 extension KHR_blend_equation_advanced           optional
 extension KHR_blend_equation_advanced_coherent  optional
+extension KHR_no_error                          optional

src/MagnumExternal/OpenGL/GL/flextGL.h

@@ -1749,6 +1749,10 @@ typedef void (APIENTRY *GLDEBUGPROC)(GLenum source,GLenum type,GLuint id,GLenum
 
 #define GL_BLEND_ADVANCED_COHERENT_KHR 0x9285
 
+/* GL_KHR_no_error */
+
+#define GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR 0x00000008
+
 /* Function prototypes */
 
 /* GL_ARB_bindless_texture */

src/MagnumExternal/OpenGL/GLES2/extensions.txt

@@ -74,6 +74,7 @@ extension KHR_blend_equation_advanced_coherent  optional
 extension KHR_robustness                        optional
 extension KHR_robust_buffer_access_behavior     optional
 extension KHR_context_flush_control             optional
+extension KHR_no_error                          optional
 extension NV_read_buffer_front                  optional
 extension NV_read_depth                         optional
 extension NV_read_stencil                       optional

src/MagnumExternal/OpenGL/GLES2/flextGL.h

@@ -981,6 +981,10 @@ typedef khronos_ssize_t GLsizeiptr;
 #define GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_KHR 0x82FC
 #define GL_NONE 0
 
+/* GL_KHR_no_error */
+
+#define GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR 0x00000008
+
 /* GL_NV_texture_border_clamp */
 
 #define GL_TEXTURE_BORDER_COLOR_NV 0x1004

src/MagnumExternal/OpenGL/GLES3/extensions.txt

@@ -36,6 +36,7 @@ extension KHR_blend_equation_advanced_coherent      optional
 extension KHR_robustness                            optional
 extension KHR_robust_buffer_access_behavior         optional
 extension KHR_context_flush_control                 optional
+extension KHR_no_error                              optional
 extension NV_read_buffer_front                      optional
 extension NV_read_depth                             optional
 extension NV_read_stencil                           optional

src/MagnumExternal/OpenGL/GLES3/flextGL.h

@@ -1280,6 +1280,10 @@ typedef khronos_ssize_t GLsizeiptr;
 #define GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_KHR 0x82FC
 #define GL_NONE 0
 
+/* GL_KHR_no_error */
+
+#define GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR 0x00000008
+
 /* GL_NV_texture_border_clamp */
 
 #define GL_TEXTURE_BORDER_COLOR_NV 0x1004