Android Open Source - Schooner-3D Test Materials

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2012 Dan Mercer/*w  w  w.j  ava  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 com.supermercerbros.gameengine;

import com.supermercerbros.gameengine.engine.shaders.Material;
import com.supermercerbros.gameengine.objects.GameObject;
import com.supermercerbros.gameengine.shaders.ProgramSource;

public class TestMaterials {
  public static final int FRAMES_TO_LOG = 0;
  
  /**
   * Flat white polys, no transformations
   */
  public static class MinimalMaterial extends Material {
    private static final String VERT_VARS = 
        "attribute vec3 a_pos;\n";

    private static final String VERT_MAIN = 
        "gl_Position = vec4(a_pos, 1.0);\n";
    
    private static final String FRAG_MAIN =
        "gl_FragColor = vec4(1.0);\n";

    private static final int STRIDE = 3;

    @Override
    public void onLoadObject(GameObject obj, float[] vbo, int vertCount) {
      loadArrayToVbo(obj.verts, vbo, 3, vertCount);
    }
    
    @Override
    public void onAttachAttribs() {
      attachAttrib(a_pos, 3);
    }

    @Override
    public void makeProgram() {
      ProgramSource prog = new ProgramSource(null, null, VERT_VARS, VERT_MAIN, null, null, FRAG_MAIN);
      setProgram(prog, STRIDE);
    }
    
  }
  
  public static class ShadelessMaterial extends Material {
    private static final String VERT_VARS = 
        "uniform mat4 u_viewProj;\n" + 
        "uniform mat4 u_model;\n" + 
        
        "attribute vec3 a_pos;\n";

    private static final String VERT_MAIN = 
        "mat4 transform = u_viewProj * u_model;\n" +
        "gl_Position = transform * vec4(a_pos, 1.0);\n";
    
    private static final String FRAG_MAIN = 
        "gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);\n";
    
    private static final int STRIDE = 3;
    
    @Override
    protected void onLoadObject(GameObject obj, float[] vbo, int vertCount) {
      loadArrayToVbo(obj.verts, vbo, 3, vertCount);
    }

    @Override
    protected void onAttachAttribs() {
      attachAttrib(a_pos, 3);
    }

    @Override
    public void makeProgram() {
      ProgramSource prog = new ProgramSource(null, null, VERT_VARS, VERT_MAIN, null, null, FRAG_MAIN);
      setProgram(prog, STRIDE);
    }
    
  }
  
  /**
   * Vertex-shaded polys
   */
  public static class ShadedMaterial extends Material {
    private static final String VERT_VARS = 
        "uniform mat4 u_viewProj;\n" + 
        "uniform vec3 u_lightVec;\n" +
        "uniform mat4 u_model;\n" + 
        
        "attribute vec3 a_pos;\n" + 
        "attribute vec3 a_normal;\n";

    private static final String VERT_MAIN = 
        "mat4 transform = u_viewProj * u_model;\n" +
        "gl_Position = transform * vec4(a_pos, 1.0);\n" +
        "vec3 normal = (transform * vec4(a_normal, 0.0)).xyz;\n" +
        "v_brightness = (dot(normalize(normal), u_lightVec) + 1.0) / 2.0;\n";
    
    private static final String VARYINGS = 
        "varying float v_brightness;";
    
    private static final String FRAG_VARS =
        "uniform vec3 u_lightColor;\n";
    
    private static final String FRAG_MAIN = 
        "gl_FragColor = vec4(min(u_lightColor * v_brightness + 0.2, vec3(1.0)), 1.0);\n";
    
    private static final int STRIDE = 6;

    @Override
    public void onLoadObject(GameObject obj, float[] vbo, int vertCount) {
      loadArrayToVbo(obj.verts, vbo, 3, vertCount);
      loadArrayToVbo(obj.normals, vbo, 3, vertCount);
    }
    
    @Override
    public void onAttachAttribs() {
      attachAttrib(a_pos, 3);
      attachAttrib(a_normal, 3);
    }

    @Override
    public void makeProgram() {
      ProgramSource prog = new ProgramSource(VARYINGS, null, VERT_VARS, VERT_MAIN, null, FRAG_VARS, FRAG_MAIN);
      setProgram(prog, STRIDE);
    }
  }
}

Java Source Code List

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