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-rw-r--r--src/mesa/drivers/dri/i915/intel_context.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_context.c b/src/mesa/drivers/dri/i915/intel_context.c
index 4db4edd17b..d201fcf323 100644
--- a/src/mesa/drivers/dri/i915/intel_context.c
+++ b/src/mesa/drivers/dri/i915/intel_context.c
@@ -569,7 +569,7 @@ void intelWindowMoved( intelContextPtr intel )
GLint areaB = driIntersectArea( drw_rect, pipeB_rect );
GLuint flags = intel->vblank_flags;
- if (areaB > areaA || (areaA > 0 && areaB > 0)) {
+ if (areaB > areaA || (areaA == areaB && areaB > 0)) {
flags = intel->vblank_flags | VBLANK_FLAG_SECONDARY;
} else {
flags = intel->vblank_flags & ~VBLANK_FLAG_SECONDARY;