/*******************************************************************************
* Copyright 2014 Geoscience Australia
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package au.gov.ga.earthsci.worldwind.common.layers.sun;
import java.io.InputStream;
import javax.media.opengl.GL2;
import au.gov.ga.earthsci.worldwind.common.render.Shader;
/**
* Horizontal blur shader.
*
* @author Michael de Hoog (michael.dehoog@ga.gov.au)
*/
@SuppressWarnings("nls")
public class BlurHorizontalShader extends Shader
{
private int width = -1;
private int od = -1;
public void use(GL2 gl, int width, float od)
{
if (super.use(gl))
{
gl.glUniform1i(this.width, width);
gl.glUniform1f(this.od, od);
}
}
@Override
protected void getUniformLocations(GL2 gl)
{
gl.glUniform1i(gl.glGetUniformLocation(shaderProgram, "Texture"), 0);
width = gl.glGetUniformLocation(shaderProgram, "Width");
od = gl.glGetUniformLocation(shaderProgram, "od");
}
@Override
protected InputStream getVertexSource()
{
return getClass().getResourceAsStream("SunVertexShader.glsl");
}
@Override
protected InputStream getFragmentSource()
{
return getClass().getResourceAsStream("BlurHorizontalFragmentShader.glsl");
}
}