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//=========================================================================
//
// Program: Visualization Toolkit
// Module: vtkSurfaceLICComposite_fs1.glsl
//
// Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// All rights reserved.
// See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
//
// This software is distributed WITHOUT ANY WARRANTY; without even
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
// PURPOSE. See the above copyright notice for more information.
//
//=========================================================================
// This shader composites for surface lic
// it expects float depth values encoded
// in alpha channel.
#version 110
uniform sampler2D texData;
void main()
{
vec4 newData = texture2D(texData, gl_TexCoord[0].st);
float newDepth = newData.a;
if (newDepth == 0.0)
{
discard;
}
gl_FragDepth = newDepth;
gl_FragData[0] = newData;
}
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