Android Open Source - Schooner-3D Shader

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2012 Dan Mercer//from  w  w  w . j a  va  2 s.  c o  m
 * 
 * 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.engine.shaders;

import com.supermercerbros.gameengine.engine.GameRenderer;

import android.opengl.GLES20;
import android.opengl.GLException;
import android.util.Log;

public class Shader {
  private static final String TAG = "com.supermercerbros.gameengine.engine.Shader";
  public final String source;
  private int handle;
  private boolean loaded;
  
  Shader(String source){
    this.source = source;
  }
  
  int load(int type) throws GLException {
    if (loaded) {
      return handle;
    }
    handle = GLES20.glCreateShader(type);
    if (handle == 0) {
      int error = GameRenderer.logError("glCreateShader(" + type + ")");
      throw new GLException(error, "CreateShader failed");
    }
    GLES20.glShaderSource(handle, source);
    GameRenderer.logError("glShaderSource(handle, source)");
    GLES20.glCompileShader(handle);
    
    // Check compile status
    int[] compiled = { 0 };
    GLES20.glGetShaderiv(handle, GLES20.GL_COMPILE_STATUS, compiled, 0);
    if (compiled[0] != GLES20.GL_TRUE) {
      Log.e(TAG, "Error compiling shader. \n" + GLES20.glGetShaderInfoLog(handle));
      
      // Undo the shader
      GLES20.glDeleteShader(handle);
      return 0;
    }
    
    Log.d(TAG, "shader successfully compiled!");
    
    return handle;
  }
  
  void reset(){
    loaded = false;
    handle = -1;
  }

}

Java Source Code List

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