Android GPUImage implementation of GPUImageTwoPassFilter

GPUImageTwoPassFilter.java

package jp.co.cyberagent.android.gpuimage;

import static jp.co.cyberagent.android.gpuimage.GPUImageRenderer.CUBE;
import static jp.co.cyberagent.android.gpuimage.utils.TextureRotationUtils.TEXTURE_NO_ROTATION;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;

import jp.co.cyberagent.android.gpuimage.utils.TextureRotationUtils;
import android.opengl.GLES20;
import android.util.Log;

public class GPUImageTwoPassFilter1 extends GPUImageFilter {
  final static String TAG = "GPUImageTwoPassFilter";
	//int secondFilterOutputTexture;
	
	int secondFilterPositionAttribute;
	int secondFilterTextureCoordinateAttribute;
	
	int secondFilterInputTextureUniform;
	int secondFilterInputTextureUniform2;
	int secondFilterProgram;
	
	private ByteBuffer mTexture2CoordinatesBuffer;
	String secondStageVertexShader;
	String secondStageFragmentShader;
    
    
    private int[] secondFilterFramebuffer;
    private int[] secondFilterOutputTexture;
    private int outputTexture;
	public GPUImageTwoPassFilter1(String firstStageVertexShaderString, String firstStageFragmentShaderString, String secondStageVertexShaderString, String secondStageFragmentShaderString){
		super(firstStageVertexShaderString, firstStageFragmentShaderString);
		Log.d(TAG, "Full Constructor");
		secondStageVertexShader = secondStageVertexShaderString;
		secondStageFragmentShader = secondStageFragmentShaderString;
	}
	
	public GPUImageTwoPassFilter1(String firstStageFragmentShaderString, String secondStageFragmentShaderString){
		this(NO_FILTER_VERTEX_SHADER, firstStageFragmentShaderString, NO_FILTER_VERTEX_SHADER, secondStageFragmentShaderString);
		Log.d(TAG, "Second Constructor");
		secondStageVertexShader = NO_FILTER_VERTEX_SHADER;
		secondStageFragmentShader = secondStageFragmentShaderString;
	}
	
	@Override
    public void onInit() {
        super.onInit();

        //create the second filter program
        Log.d("Second Filter Program", "Pre Load");
        secondFilterProgram = OpenGlUtils.loadProgram(secondStageVertexShader, secondStageFragmentShader);
        Log.d("Second Filter Program", secondFilterProgram + "");
        secondFilterPositionAttribute = GLES20.glGetAttribLocation(secondFilterProgram, "position");
        secondFilterTextureCoordinateAttribute = GLES20.glGetAttribLocation(secondFilterProgram, "inputTextureCoordinate");
        
        secondFilterInputTextureUniform =  GLES20.glGetUniformLocation(secondFilterProgram, "inputImageTexture");
        secondFilterInputTextureUniform2 = GLES20.glGetUniformLocation(secondFilterProgram, "inputImageTexture2");
        
        //TODO: [GPUImageOpenGLESContext setActiveShaderProgram:secondFilterProgram]; ??
        GLES20.glUseProgram(secondFilterProgram);
        GLES20.glEnableVertexAttribArray(secondFilterPositionAttribute);
        GLES20.glEnableVertexAttribArray(secondFilterTextureCoordinateAttribute);

    }
	
	
	
	
    @Override
	public void onDraw(final int textureId, final FloatBuffer cubeBuffer,final FloatBuffer textureBuffer){
		//do the first pass, as usual
		super.onDraw(textureId, cubeBuffer, textureBuffer);
		
		//createSecondFilterFBO
		if(secondFilterFramebuffer == null){
			//createFilterFBOOfSize
			secondFilterFramebuffer = new int[1];
	    	Log.d(TAG, "creating filter framebuffer");
	    	
	    	
			  GLES20.glGenFramebuffers(1, secondFilterFramebuffer, 0);
	    	GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, secondFilterFramebuffer[0]);
	    	
	    	if(secondFilterOutputTexture == null){
	    		Log.d(TAG, "creating second output texture");
	    		secondFilterOutputTexture = new int[1];
	    		GLES20.glGenTextures(1, secondFilterOutputTexture, 0);
		    	GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, secondFilterOutputTexture[0]);
		    	GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
		    	GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
		        GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
		        GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
		        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
	    	}
	    	
	        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, secondFilterOutputTexture[0]);
	        GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, width, height, 0,GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, null);
	        GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, secondFilterOutputTexture[0], 0);
		    	GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
		}
		int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
		if(status != GLES20.GL_FRAMEBUFFER_COMPLETE){
			Log.d(TAG, "framebuffer failed to create");
		}
		    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, secondFilterFramebuffer[0]);
	    	//GLES20.glViewport(0, 0, width, height);
		
		     //change the program
      	GLES20.glUseProgram(secondFilterProgram);
      	
      	//clear the old colors
        GLES20.glClearColor(0, 0, 0, 1);
        GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
		
        
		
      	GLES20.glActiveTexture(GLES20.GL_TEXTURE3); //ios version is GL_TEXTURE3
		    //TODO: change this texture to be the correct input texture
      	GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, secondFilterOutputTexture[0]);
        GLES20.glUniform1i(secondFilterInputTextureUniform, 3);
        
        
        cubeBuffer.position(0);
        
        GLES20.glVertexAttribPointer(secondFilterPositionAttribute, 2, GLES20.GL_FLOAT, false, 0, cubeBuffer);
        GLES20.glEnableVertexAttribArray(secondFilterPositionAttribute);
        
        textureBuffer.position(0);
        //TODO: change the textureBuffer to be NO ROTATION
        GLES20.glVertexAttribPointer(secondFilterTextureCoordinateAttribute, 2, GLES20.GL_FLOAT, false, 0, textureBuffer);
        GLES20.glEnableVertexAttribArray(secondFilterTextureCoordinateAttribute); 
        
        
        
        
        GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
        GLES20.glDisableVertexAttribArray(secondFilterPositionAttribute);
        GLES20.glDisableVertexAttribArray(secondFilterTextureCoordinateAttribute);
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
        
        GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
        
	}
}

did you get this work?