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-rw-r--r--src/core/compositor/display_gl_output_surface_qsg.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/core/compositor/display_gl_output_surface_qsg.cpp b/src/core/compositor/display_gl_output_surface_qsg.cpp
index 2f7b3de84..2ed24ef1d 100644
--- a/src/core/compositor/display_gl_output_surface_qsg.cpp
+++ b/src/core/compositor/display_gl_output_surface_qsg.cpp
@@ -76,6 +76,7 @@ public:
QOpenGLFunctions *funcs = context->functions();
funcs->glBindTexture(GL_TEXTURE_2D, m_id);
}
+ int comparisonKey() const override { return m_id; }
private:
uint32_t m_id;