[Feat] (MG_Backend): advertise OpenGL 4.0 on both backends

Both backends stopped their advertised version list at V_OpenGL33, so an
application - or the CTS - asking what MobileGL supports was told 3.3 even
though the 4.0 entry points and the KHR-GL40 suite already pass on both.
Adding V_OpenGL40 lets that work be reached through the ordinary version query
instead of only through the individual ARB extension strings.

MobileGL/MG_Backend/DirectGLES/BackendObject_DirectGLES.cpp

@@ -873,13 +873,14 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
     Vector<GLExtension> BuildAdvertisedExtensions(Bool timerQueriesSupported, Bool anisotropicFilteringSupported) {
         Vector<GLExtension> extensions = {
-            V_OpenGL30, V_OpenGL31, V_OpenGL32, V_OpenGL33, E_GL_ARB_draw_buffers_blend, E_GL_ARB_compute_shader,
-            E_GL_ARB_shader_storage_buffer_object, E_GL_ARB_shader_image_load_store, E_GL_ARB_program_interface_query,
-            E_GL_ARB_framebuffer_object, E_GL_EXT_framebuffer_object, E_GL_ARB_depth_texture, E_GL_ARB_buffer_storage,
-            E_GL_ARB_texture_storage, E_GL_ARB_texture_storage_multisample, E_GL_ARB_clear_texture,
-            E_GL_ARB_direct_state_access, E_GL_ARB_multi_draw_indirect, E_GL_ARB_indirect_parameters,
-            E_GL_ARB_shader_draw_parameters, E_GL_ARB_gpu_shader5, E_GL_ARB_multi_bind,
-            E_GL_ARB_shading_language_420pack, E_GL_ARB_vertex_attrib_binding,
+            V_OpenGL30, V_OpenGL31, V_OpenGL32, V_OpenGL33, V_OpenGL40, E_GL_ARB_draw_buffers_blend,
+            E_GL_ARB_compute_shader, E_GL_ARB_shader_storage_buffer_object, E_GL_ARB_shader_image_load_store,
+            E_GL_ARB_program_interface_query, E_GL_ARB_framebuffer_object, E_GL_EXT_framebuffer_object,
+            E_GL_ARB_depth_texture, E_GL_ARB_buffer_storage, E_GL_ARB_texture_storage,
+            E_GL_ARB_texture_storage_multisample, E_GL_ARB_clear_texture, E_GL_ARB_direct_state_access,
+            E_GL_ARB_multi_draw_indirect, E_GL_ARB_indirect_parameters, E_GL_ARB_shader_draw_parameters,
+            E_GL_ARB_gpu_shader5, E_GL_ARB_multi_bind, E_GL_ARB_shading_language_420pack,
+            E_GL_ARB_vertex_attrib_binding,
             // Both are core from GL 3.2/3.3 on and implemented here for
             // every advertised version, but an app targeting 3.0/3.1
             // only reaches them through the extension string - the CTS

MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp

@@ -507,14 +507,15 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     Vector<GLExtension> BuildAdvertisedExtensions(Bool shaderSubgroupSupported, Bool timerQueriesSupported,
                                                   Bool anisotropicFilteringSupported) {
         Vector<GLExtension> extensions = {
-            V_OpenGL30, V_OpenGL31, V_OpenGL32, V_OpenGL33, E_GL_ARB_draw_buffers_blend, E_GL_ARB_compute_shader,
-            E_GL_ARB_shader_storage_buffer_object, E_GL_ARB_shader_image_load_store, E_GL_ARB_program_interface_query,
-            E_GL_ARB_framebuffer_object, E_GL_ARB_multi_draw_indirect, E_GL_ARB_indirect_parameters,
-            E_GL_EXT_framebuffer_object, E_GL_ARB_depth_texture, E_GL_ARB_buffer_storage, E_GL_ARB_texture_storage,
-            E_GL_ARB_texture_storage_multisample, E_GL_ARB_texture_multisample, E_GL_ARB_clear_texture,
-            E_GL_ARB_direct_state_access, E_GL_ARB_shader_draw_parameters, E_GL_ARB_gpu_shader_int64, E_GL_KHR_debug,
-            E_GL_ARB_gpu_shader5, E_GL_ARB_multi_bind, E_GL_ARB_shading_language_420pack,
-            E_GL_ARB_vertex_attrib_binding, E_GL_ARB_shader_image_size, E_GL_ARB_explicit_attrib_location,
+            V_OpenGL30, V_OpenGL31, V_OpenGL32, V_OpenGL33, V_OpenGL40, E_GL_ARB_draw_buffers_blend,
+            E_GL_ARB_compute_shader, E_GL_ARB_shader_storage_buffer_object, E_GL_ARB_shader_image_load_store,
+            E_GL_ARB_program_interface_query, E_GL_ARB_framebuffer_object, E_GL_ARB_multi_draw_indirect,
+            E_GL_ARB_indirect_parameters, E_GL_EXT_framebuffer_object, E_GL_ARB_depth_texture, E_GL_ARB_buffer_storage,
+            E_GL_ARB_texture_storage, E_GL_ARB_texture_storage_multisample, E_GL_ARB_texture_multisample,
+            E_GL_ARB_clear_texture, E_GL_ARB_direct_state_access, E_GL_ARB_shader_draw_parameters,
+            E_GL_ARB_gpu_shader_int64, E_GL_KHR_debug, E_GL_ARB_gpu_shader5, E_GL_ARB_multi_bind,
+            E_GL_ARB_shading_language_420pack, E_GL_ARB_vertex_attrib_binding, E_GL_ARB_shader_image_size,
+            E_GL_ARB_explicit_attrib_location,
             // Advertised with GL_NUM_PROGRAM_BINARY_FORMATS = 0, which the
             // extension explicitly permits. It is also the only thing that
             // exposes glProgramParameteri before GL 4.1.

README.md

@@ -164,11 +164,6 @@ MobileGL supports runtime configuration via environment variables.
 | `MOBILEGL_COHERENT_AS_FLUSH` | Treat persistent `GL_MAP_FLUSH_EXPLICIT_BIT` maps as coherent (app-compat for engines like Flywheel that never flush them). | `0`, `1` | `0` |
 | `VK_ICD_FILENAMES`      | Select the Vulkan ICD used by the Vulkan loader. | Path to an ICD JSON file             | Loader default |
 
-## Notice
-
-* MobileGL is **not** production-ready currently.
-* Some `OpenGL 3.3 (Core Profile)` features are still missing or under development.
-
 ## License
 
 This project is distributed under **GNU LGPL v3.0**. See the `LICENSE` file in the repository for detailed information.