Backends: OpenGL3: Fixed erroneous use glGetIntegerv(GL_CONTEXT_PROFILE_MASK) on contexts lower than 3.2. (#6539, #6333)

backends/imgui_impl_opengl3.cpp

@@ -19,6 +19,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2023-06-20: OpenGL: Fixed erroneous use glGetIntegerv(GL_CONTEXT_PROFILE_MASK) on contexts lower than 3.2. (#6539, #6333)
 //  2023-05-09: OpenGL: Support for glBindSampler() backup/restore on ES3. (#6375)
 //  2023-04-18: OpenGL: Restore front and back polygon mode separately when supported by context. (#6333)
 //  2023-03-23: OpenGL: Properly restoring "no shader program bound" if it was the case prior to running the rendering function. (#6267, #6220, #6224)
@@ -301,7 +302,8 @@ bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
     }
     bd->GlVersion = (GLuint)(major * 100 + minor * 10);
 #if defined(GL_CONTEXT_PROFILE_MASK)
-    glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &bd->GlProfileMask);
+    if (bd->GlVersion >= 320)
+        glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &bd->GlProfileMask);
     bd->GlProfileIsCompat = (bd->GlProfileMask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT) != 0;
 #endif
 

docs/CHANGELOG.txt

@@ -76,6 +76,8 @@ Other changes:
   comments. Currently mainly for inspecting Docking .ini data, but makes saving slower.
 - Demo: Added more developed "Widgets->Tooltips" section. (#1485)
 - Backends: OpenGL3: Fixed support for glBindSampler() backup/restore on ES3. (#6375, #6508) [@jsm174]
+- Backends: OpenGL3: Fixed erroneous use glGetIntegerv(GL_CONTEXT_PROFILE_MASK) on contexts
+  lower than 3.2. (#6539, #6333) [@krumelmonster]
 - Backends: GLFW: Accept glfwGetTime() not returning a monotonically increasing value.
   This seems to happens on some Windows setup when peripherals disconnect, and is likely
   to also happen on browser+Emscripten. Matches similar 1.89.4 fix in SDL backend. (#6491)