Commit f9724c30 authored by Dave DeMarle's avatar Dave DeMarle
Browse files

Bug 0014446-must enable blending when we use it

Per http://www.vtk.org/Bug/view.php?id=14446 we must be sure to enable blending
before we use it.

Thanks Stephan Rademacher for catching it.

Change-Id: I0678b90bd869579413a6267fece356045c41d305
parent 41771964
......@@ -206,6 +206,8 @@ void vtkOpenGLRayCastImageDisplayHelper::RenderTextureInternal( vtkVolume *vol,
glPixelTransferf( GL_BLUE_SCALE, this->PixelScale );
glPixelTransferf( GL_ALPHA_SCALE, this->PixelScale );
glEnable( GL_BLEND );
if ( this->PreMultipliedColors )
{
// Values in the texture map have already been pre-multiplied by alpha
......
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