From c49a6953b0f5cbfa2d20de4246a87efdc3b0aa52 Mon Sep 17 00:00:00 2001
From: José Fonseca <jfonseca@vmware.com>
Date: Mon, 5 Jan 2015 20:22:44 +0000
Subject: glretrace: Ensure we get a matching context.

---
 helpers/glprofile.hpp      |  7 +++++++
 retrace/glretrace_main.cpp | 16 +++++++++++++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/helpers/glprofile.hpp b/helpers/glprofile.hpp
index dc35400b..1ff922cb 100644
--- a/helpers/glprofile.hpp
+++ b/helpers/glprofile.hpp
@@ -65,6 +65,13 @@ struct Profile {
                (major == refMajor && minor >= refMinor);
     }
 
+    inline bool
+    matches(const Profile expected) const {
+        return api == expected.api &&
+               versionGreaterOrEqual(expected.major, expected.minor) &&
+               core == expected.core;
+    }
+
     // Comparison operator, mainly for use in std::map
     inline bool
     operator == (const Profile & other) const {
diff --git a/retrace/glretrace_main.cpp b/retrace/glretrace_main.cpp
index 714295f5..d60c4051 100755
--- a/retrace/glretrace_main.cpp
+++ b/retrace/glretrace_main.cpp
@@ -336,12 +336,26 @@ clientWaitSync(trace::Call &call, GLsync sync, GLbitfield flags, GLuint64 timeou
 }
 
 
+/*
+ * Called the first time a context is made current.
+ */
 void
 initContext() {
     glretrace::Context *currentContext = glretrace::getCurrentContext();
+    assert(currentContext);
+
+    /* Ensure we got a matching profile.
+     *
+     * In particular on MacOSX, there is no other way.
+     */
+    glprofile::Profile expectedProfile = currentContext->wsContext->profile;
+    glprofile::Profile currentProfile = glprofile::getCurrentContextProfile();
+    if (!currentProfile.matches(expectedProfile)) {
+        std::cerr << "error: bad context version: expected " << expectedProfile << ", got " << currentProfile << "\n";
+        exit(1);
+    }
 
     /* Ensure we have adequate extension support */
-    assert(currentContext);
     supportsTimestamp   = currentContext->hasExtension("GL_ARB_timer_query");
     supportsElapsed     = currentContext->hasExtension("GL_EXT_timer_query") || supportsTimestamp;
     supportsOcclusion   = currentContext->hasExtension("GL_ARB_occlusion_query");
-- 
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