109   if (image->alpha_trait == UndefinedPixelTrait)  in ClearBounds()
272   coalesce_image->background_color.alpha_trait=BlendPixelTrait;  in CoalesceImages()
275   coalesce_image->alpha_trait=next->alpha_trait;  in CoalesceImages()
287   dispose_image->background_color.alpha_trait=BlendPixelTrait;  in CoalesceImages()
329         dispose_image->background_color.alpha_trait=BlendPixelTrait;  in CoalesceImages()
343     coalesce_image->background_color.alpha_trait=BlendPixelTrait;  in CoalesceImages()
347         next->alpha_trait != UndefinedPixelTrait ? OverCompositeOp :  in CoalesceImages()
428   dispose_image->background_color.alpha_trait=BlendPixelTrait;  in DisposeImages()
447     current_image->background_color.alpha_trait=BlendPixelTrait;  in DisposeImages()
449       next->alpha_trait != UndefinedPixelTrait ? OverCompositeOp : CopyCompositeOp,  in DisposeImages()
500       dispose_image->background_color.alpha_trait=BlendPixelTrait;  in DisposeImages()
557   o1 = (p->alpha_trait != UndefinedPixelTrait) ? p->alpha : OpaqueAlpha;  in ComparePixels()
558   o2 = (q->alpha_trait != UndefinedPixelTrait) ? q->alpha : OpaqueAlpha;  in ComparePixels()
810   image_a->background_color.alpha_trait=BlendPixelTrait;  in CompareImagesLayers()
832     image_b->background_color.alpha_trait=BlendPixelTrait;  in CompareImagesLayers()
850   layers->background_color.alpha_trait=BlendPixelTrait;  in CompareImagesLayers()
871     image_a->background_color.alpha_trait=BlendPixelTrait;  in CompareImagesLayers()
1029   prev_image->background_color.alpha_trait=BlendPixelTrait;  in OptimizeLayerFrames()
1134             dup_image->background_color.alpha_trait=BlendPixelTrait;  in OptimizeLayerFrames()
1164         bgnd_image->background_color.alpha_trait=BlendPixelTrait;  in OptimizeLayerFrames()
1352     prev_image->background_color.alpha_trait=BlendPixelTrait;  in OptimizeLayerFrames()
1516   dispose_image->background_color.alpha_trait=BlendPixelTrait;  in OptimizeImageTransparency()
1534     current_image->background_color.alpha_trait=BlendPixelTrait;  in OptimizeImageTransparency()
1535     (void) CompositeImage(current_image,next,next->alpha_trait != UndefinedPixelTrait ?  in OptimizeImageTransparency()
1845         dest->background_color.alpha_trait=BlendPixelTrait;  in CompositeLayers()
1859           destination->background_color.alpha_trait=BlendPixelTrait;  in CompositeLayers()
2071   canvas->background_color.alpha_trait=BlendPixelTrait;  in MergeImageLayers()