Android Open Source - geoar-app Phong Feature Shader

• Back to Location/Application  ↑

From Project

Back to project page geoar-app.

License

The source code is released under:

Apache License

Java Source Code

/**
 * Copyright 2012 52North Initiative for Geospatial Open Source Software GmbH
 *// www.ja v a 2 s.  c  om
 * 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 org.n52.geoar.view.geoar.gl.mode;

public class PhongFeatureShader extends FeatureShader {
  
  private final String vertexShader = 
      "uniform mat4 " + UNIFORM_MATRIX_MVP + ";    \n" +   
      "uniform mat4 " + UNIFORM_MATRIX_MV + ";    \n" +  
      "uniform vec3 " + UNIFORM_VEC3_LIGHTPOS + ";  \n" +   
      
      "attribute vec3 " + ATTRIBUTE_POSITION + ";    \n" +  
      "attribute vec4 " + ATTRIBUTE_COLOR + ";    \n" +  
      "attribute vec3 " + ATTRIBUTE_NORMAL + ";    \n" +   
        
      /** color varying for fragment shader */
      "varying vec4 vColor;      \n" +  
      
      "void main()          \n" +
      "{                              \n" + 
      
      /** transform vertex and normals into model coordinates */
      "   vec3 vertexMV = vec3(" + UNIFORM_MATRIX_MV + " * vec4(" + ATTRIBUTE_POSITION + ", 0.0));  \n" +
      "  vec3 normalMV = vec3(" + UNIFORM_MATRIX_MV + " * vec4(" + ATTRIBUTE_NORMAL + ", 0.0));    \n" +
        
      /** lightning */
      "  vec3 lightVec = normalize(" + UNIFORM_VEC3_LIGHTPOS + " - vertexMV)      \n" +
      "  float dist = length(" + UNIFORM_VEC3_LIGHTPOS + " - vertexMV)        \n" +
      "  float diffuse = max(dot(normalMV, lightVec), 0.1)*(1.0/(1.0(0.25*dist*dist)))  \n" +
      
      /** set color and position */
      "  vColor = " + ATTRIBUTE_COLOR + " * diffuse;      \n" +
      "   gl_Position = " + UNIFORM_MATRIX_MVP + "         \n" +
      "               * " + ATTRIBUTE_POSITION + ";       \n" + 
      "}                                          \n";       

  private final String fragmentShader = 
      "precision mediump float;       \n"  // Set the default precision to medium. We don't need as high of a 
            // precision in the fragment shader.
    +  "varying vec4 vColor;          \n"  // This is the color from the vertex shader interpolated across the 
            // triangle per fragment.
      
      //The entry point for our fragment shader.
    +  "void main()                    \n"    
    +  "{                              \n"  
      // Pass through the color
    +    "gl_FragColor = vColor;      \n"                             
    +  "}                              \n";
  
  public PhongFeatureShader(String vertexShader, String fragmentShader) {
    super(vertexShader, fragmentShader);
  }

}

Java Source Code List

• Back to Location/Application  ↑