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-rw-r--r--indra/llrender/llimagegl.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index 10fdd7c9a9..9e26247e1e 100644
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -1644,6 +1644,8 @@ void LLImageGLThread::updateClass()
void LLImageGL::syncToMainThread(LLGLuint new_tex_name)
{
LL_PROFILE_ZONE_SCOPED;
+ llassert(!on_main_thread());
+
{
LL_PROFILE_ZONE_NAMED("cglt - sync");
if (gGLManager.mHasSync)