Java Code Examples for android.opengl.GLES20#glBindRenderbuffer()

public RenderBuffer(int width, int height, int activeTexUnit) {
    this.width = width;
    this.height = height;
    this.activeTexUnit = activeTexUnit;
    int[] genbuf = new int[1];

    // Generate and bind 2d texture
    GLES20.glActiveTexture(activeTexUnit);
    texId = MyGLUtils.genTexture();
    IntBuffer texBuffer =
            ByteBuffer.allocateDirect(width * height * 4).order(ByteOrder.nativeOrder()).asIntBuffer();
    GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, width, height, 0, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, texBuffer);

    GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
    GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_CLAMP_TO_EDGE);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_CLAMP_TO_EDGE);

    // Generate frame buffer
    GLES20.glGenFramebuffers(1, genbuf, 0);
    frameBufferId = genbuf[0];
    // Bind frame buffer
    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, frameBufferId);

    // Generate render buffer
    GLES20.glGenRenderbuffers(1, genbuf, 0);
    renderBufferId = genbuf[0];
    // Bind render buffer
    GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, renderBufferId);
    GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, width, height);

    unbind();
}
 

protected void initFBO(int width, int height, int[] fboId, int[] rboId, int[] texId) {
  GlUtil.checkGlError("initFBO_S");

  GLES20.glGenFramebuffers(1, fboId, 0);
  GLES20.glGenRenderbuffers(1, rboId, 0);
  GLES20.glGenTextures(1, texId, 0);

  GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, rboId[0]);
  GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, width,
      height);
  GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, fboId[0]);
  GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT,
      GLES20.GL_RENDERBUFFER, rboId[0]);

  GLES20.glActiveTexture(GLES20.GL_TEXTURE3);
  GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texId[0]);
  GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
  GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);
  GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
  GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);

  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, texId[0], 0);

  int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
  if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
    throw new RuntimeException("FrameBuffer uncompleted code: " + status);
  }
  GlUtil.checkGlError("initFBO_E");
}
 

private void initFBO() {
    // 初始化输出纹理
    if (mTextureOut != null) {
        GLES20.glDeleteTextures(1, mTextureOut, 0);
        mTextureOut = null;
    }
    mTextureOut = new int[1];
    GLES20.glGenTextures(1, mTextureOut, 0);
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextureOut[0]);

    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,
            GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,
            GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S,
            GLES20.GL_CLAMP_TO_EDGE);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T,
            GLES20.GL_CLAMP_TO_EDGE);

    GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA,
            getWidth(), getHeight(), 0, GLES20.GL_RGBA,
            GLES20.GL_UNSIGNED_BYTE, null);

    // 初始化帧缓冲和深度缓冲
    if (mFrameBuffer != null) {
        GLES20.glDeleteFramebuffers(1, mFrameBuffer, 0);
        mFrameBuffer = null;
    }
    if (mDepthRenderBuffer != null) {
        GLES20.glDeleteRenderbuffers(1, mDepthRenderBuffer, 0);
        mDepthRenderBuffer = null;
    }
    mFrameBuffer = new int[1];
    mDepthRenderBuffer = new int[1];
    GLES20.glGenFramebuffers(1, mFrameBuffer, 0);
    GLES20.glGenRenderbuffers(1, mDepthRenderBuffer, 0);
    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, mFrameBuffer[0]);
    GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER,
            GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D,
            mTextureOut[0], 0);
    GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, mDepthRenderBuffer[0]);
    GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER,
            GLES20.GL_DEPTH_COMPONENT16, getWidth(), getHeight());
    GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER,
            GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER,
            mDepthRenderBuffer[0]);
}
 

private int setupRenderTextureAndRenderbuffer(int width, int height) {
	if (this.mTextureId != -1) {
		GLES20.glDeleteTextures(1, new int[] { this.mTextureId }, 0);
	}
	if (this.mRenderbufferId != -1) {
		GLES20.glDeleteRenderbuffers(1, new int[] { this.mRenderbufferId },
				0);
	}
	if (this.mFramebufferId != -1) {
		GLES20.glDeleteFramebuffers(1, new int[] { this.mFramebufferId }, 0);
	}
	this.mTextureId = createTexture(width, height);
	checkGlError("setupRenderTextureAndRenderbuffer: create texture");

	int[] renderbufferIds = new int[1];
	GLES20.glGenRenderbuffers(1, renderbufferIds, 0);
	GLES20.glBindRenderbuffer(36161, renderbufferIds[0]);
	GLES20.glRenderbufferStorage(36161, 33189, width, height);

	this.mRenderbufferId = renderbufferIds[0];
	checkGlError("setupRenderTextureAndRenderbuffer: create renderbuffer");

	int[] framebufferIds = new int[1];
	GLES20.glGenFramebuffers(1, framebufferIds, 0);
	GLES20.glBindFramebuffer(36160, framebufferIds[0]);
	this.mFramebufferId = framebufferIds[0];

	GLES20.glFramebufferTexture2D(36160, 36064, 3553, this.mTextureId, 0);

	GLES20.glFramebufferRenderbuffer(36160, 36096, 36161,
			renderbufferIds[0]);

	int status = GLES20.glCheckFramebufferStatus(36160);
	if (status != 36053) {
		throw new RuntimeException("Framebuffer is not complete: "
				+ Integer.toHexString(status));
	}
	GLES20.glBindFramebuffer(36160, 0);

	return framebufferIds[0];
}
 

@Override
public void bindRenderbuffer(int target, int renderbuffer) {
    GLES20.glBindRenderbuffer(target, renderbuffer);
}
 

public void bind() {
	GLES20.glBindRenderbuffer( GLES20.GL_RENDERBUFFER, id );
}
 

private void createFrameBuffer(int width, int height){

        if (this.mTextureIdOutput != 0) {
            GLES20.glDeleteTextures(1, new int[] { this.mTextureIdOutput}, 0);
        }
        if (this.mRenderBufferId != 0) {
            GLES20.glDeleteRenderbuffers(1, new int[] { this.mRenderBufferId }, 0);
        }
        if (this.mFrameBufferId != 0) {
            GLES20.glDeleteFramebuffers(1, new int[] { this.mFrameBufferId }, 0);
        }

        GLES20.glGetIntegerv(GLES20.GL_FRAMEBUFFER_BINDING, originalFramebufferId, 0);

        // frame buffer
        int[] frameBuffer = new int[1];
        GLES20.glGenFramebuffers(1, frameBuffer, 0);
        GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, frameBuffer[0]);
        mFrameBufferId = frameBuffer[0];
        glCheck("Multi Fish Eye frame buffer");

        // renderer buffer
        final int[] renderbufferIds = { 0 };
        GLES20.glGenRenderbuffers(1, renderbufferIds, 0);
        GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, renderbufferIds[0]);
        GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, width, height);
        mRenderBufferId = renderbufferIds[0];
        glCheck("Multi Fish Eye renderer buffer");

        final int[] textureIds = { 0 };
        GLES20.glGenTextures(1, textureIds, 0);
        GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureIds[0]);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
        GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, width, height, 0, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, (Buffer)null);
        mTextureIdOutput = textureIds[0];
        glCheck("Multi Fish Eye texture");

        // attach
        GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, mTextureIdOutput, 0);
        GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER, renderbufferIds[0]);
        glCheck("Multi Fish Eye attach");

        // check
        final int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
        if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
            final String s = "Framebuffer is not complete: ";
            final String value = String.valueOf(Integer.toHexString(status));
            throw new RuntimeException((value.length() != 0) ? s.concat(value) : s);
        }

        GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, originalFramebufferId[0]);
        glCheck("Multi Fish Eye attach");
    }
 

public void bind() {
	GLES20.glBindRenderbuffer( GLES20.GL_RENDERBUFFER, id );
}
 

private FrameBuffer build()
{
  ResultRunnable<FrameBuffer> runnable = new ResultRunnable<FrameBuffer>()
  {
    @Override
    protected FrameBuffer onRun()
    {
      int width = (int) Renderer.getWidth();
      int height = (int) Renderer.getHeight();

      int[] renderTextureIds = new int[1];
      GLES20.glGenTextures(1, renderTextureIds, 0);
      GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, renderTextureIds[0]);
      GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
      GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);
      GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
      GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
      GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, width, height, 0, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, null);

      int[] frameBufferIds = new int[1];
      GLES20.glGenFramebuffers(1, frameBufferIds, 0);
      GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, frameBufferIds[0]);
      GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, renderTextureIds[0], 0);

      int[] depthTextureIds = new int[1];
      GLES20.glGenRenderbuffers(1, depthTextureIds, 0);
      GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, depthTextureIds[0]);
      GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, width, height);
      GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER, depthTextureIds[0]);

      // check FBO status
      int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
      if (status != GLES20.GL_FRAMEBUFFER_COMPLETE)
        throw new GLException(status, "GL_FRAMEBUFFER_COMPLETE failed, CANNOT use FBO");

      return new FrameBuffer(name, frameBufferIds[0], depthTextureIds[0], renderTextureIds[0]);
    }
  };

  GameContext.glThread.sendEvent(runnable);
  return runnable.getResult();
}
 

private void updateRenderBuffer(FrameBuffer fb, RenderBuffer rb) {
        int id = rb.getId();
        if (id == -1) {
            GLES20.glGenRenderbuffers(1, intBuf1);
//            RendererUtil.checkGLError();

            id = intBuf1.get(0);
            rb.setId(id);
        }

        if (context.boundRB != id) {
            GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, id);
//            RendererUtil.checkGLError();

            context.boundRB = id;
        }

        if (fb.getWidth() > maxRBSize || fb.getHeight() > maxRBSize) {
            throw new RendererException("Resolution " + fb.getWidth()
                    + ":" + fb.getHeight() + " is not supported.");
        }

        TextureUtil.AndroidGLImageFormat imageFormat = TextureUtil.getImageFormat(rb.getFormat());
        if (imageFormat.renderBufferStorageFormat == 0) {
            throw new RendererException("The format '" + rb.getFormat() + "' cannot be used for renderbuffers.");
        }

//        if (fb.getSamples() > 1 && GLContext.getCapabilities().GL_EXT_framebuffer_multisample) {
        if (fb.getSamples() > 1) {
//            // FIXME
            throw new RendererException("Multisample FrameBuffer is not supported yet.");
//            int samples = fb.getSamples();
//            if (maxFBOSamples < samples) {
//                samples = maxFBOSamples;
//            }
//            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT,
//                    samples,
//                    glFmt.internalFormat,
//                    fb.getWidth(),
//                    fb.getHeight());
        } else {
            GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER,
                    imageFormat.renderBufferStorageFormat,
                    fb.getWidth(),
                    fb.getHeight());

//            RendererUtil.checkGLError();
        }
    }
 

public void setup(final int width, final int height) {
    final int[] args = new int[1];

    GLES20.glGetIntegerv(GL_MAX_TEXTURE_SIZE, args, 0);
    if (width > args[0] || height > args[0]) {
        throw new IllegalArgumentException("GL_MAX_TEXTURE_SIZE " + args[0]);
    }

    GLES20.glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE, args, 0);
    if (width > args[0] || height > args[0]) {
        throw new IllegalArgumentException("GL_MAX_RENDERBUFFER_SIZE " + args[0]);
    }

    GLES20.glGetIntegerv(GL_FRAMEBUFFER_BINDING, args, 0);
    final int saveFramebuffer = args[0];
    GLES20.glGetIntegerv(GL_RENDERBUFFER_BINDING, args, 0);
    final int saveRenderbuffer = args[0];
    GLES20.glGetIntegerv(GL_TEXTURE_BINDING_2D, args, 0);
    final int saveTexName = args[0];

    release();

    try {
        this.width = width;
        this.height = height;

        GLES20.glGenFramebuffers(args.length, args, 0);
        framebufferName = args[0];
        GLES20.glBindFramebuffer(GL_FRAMEBUFFER, framebufferName);

        GLES20.glGenRenderbuffers(args.length, args, 0);
        renderBufferName = args[0];
        GLES20.glBindRenderbuffer(GL_RENDERBUFFER, renderBufferName);
        GLES20.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height);
        GLES20.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, renderBufferName);

        GLES20.glGenTextures(args.length, args, 0);
        texName = args[0];
        GLES20.glBindTexture(GL_TEXTURE_2D, texName);

        EglUtil.setupSampler(GL_TEXTURE_2D, GL_LINEAR, GL_NEAREST);

        GLES20.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, null);
        GLES20.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texName, 0);

        final int status = GLES20.glCheckFramebufferStatus(GL_FRAMEBUFFER);
        if (status != GL_FRAMEBUFFER_COMPLETE) {
            throw new RuntimeException("Failed to initialize framebuffer object " + status);
        }
    } catch (final RuntimeException e) {
        release();
        throw e;
    }

    GLES20.glBindFramebuffer(GL_FRAMEBUFFER, saveFramebuffer);
    GLES20.glBindRenderbuffer(GL_RENDERBUFFER, saveRenderbuffer);
    GLES20.glBindTexture(GL_TEXTURE_2D, saveTexName);
}
 

@Override
public void setResolution(Resolution res) {
    resolution = res;
    if (framebuffer != -1) {
        release();
    }
    int[] glValues = new int[1];

    GLES20.glGenTextures(1, glValues, 0);
    utils.checkEglError("glGenTextures");
    offScreenTexture = glValues[0];

    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, offScreenTexture);
    utils.checkEglError("glBindTexture");

    GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, res.width(), res.height(), 0, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, null);
    utils.checkEglError("glTexImage2D");

    GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
    GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);

    GLES20.glGenFramebuffers(1, glValues, 0);
    utils.checkEglError("glGenFramebuffers");

    framebuffer = glValues[0];

    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, framebuffer);
    utils.checkEglError("glBindFramebuffer");

    GLES20.glGenRenderbuffers(1, glValues, 0);
    utils.checkEglError("glGenRenderbuffers");
    depthBuffer = glValues[0];

    GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, depthBuffer);
    utils.checkEglError("glBindRenderbuffer");

    GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, res.width(), res.height());
    utils.checkEglError("glRenderbufferStorage");

    GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER, depthBuffer);
    utils.checkEglError("glFramebufferRenderbuffer");

    GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, offScreenTexture, 0);
    utils.checkEglError("glFramebufferTexture2D");

    int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
    utils.checkEglError("glCheckFramebufferStatus");



    if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
        throw new RuntimeException("Incomplete framebuffer. Status: " + status);
    }

    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
    utils.checkEglError("glBindFramebuffer(0)");
}
 

private void createFBO(int width, int height) {
        if (fboTex != null && (fboWidth != width || fboHeight != height)) {
            deleteFBO();
        }

        fboWidth = width;
        fboHeight = height;

        if (fboTex == null) {
            fboId = new int[4];
            fboTex = new int[4];
            renderBufferId = new int[4];

//generate fbo id
            GLES20.glGenFramebuffers(4, fboId, 0);
//generate texture
            GLES20.glGenTextures(4, fboTex, 0);
//generate render buffer
            GLES20.glGenRenderbuffers(4, renderBufferId, 0);

            for (int i = 0; i < fboId.length; i++) {
//Bind Frame buffer
                GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, fboId[i]);
//Bind texture
                GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, fboTex[i]);
//Define texture parameters
                GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, width, height, 0, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, null);
                GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
                GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
                GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
                GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
//Bind render buffer and define buffer dimension
                GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, renderBufferId[i]);
                GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, width, height);
//Attach texture FBO color attachment
                GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, fboTex[i], 0);
//Attach render buffer to depth attachment
                GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER, renderBufferId[i]);
//we are done, reset
                GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
                GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, 0);
                GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
            }
        }
    }
 

public void setup(final int width, final int height) {
    final int[] args = new int[1];

    GLES20.glGetIntegerv(GL_MAX_TEXTURE_SIZE, args, 0);
    if (width > args[0] || height > args[0]) {
        throw new IllegalArgumentException("GL_MAX_TEXTURE_SIZE " + args[0]);
    }

    GLES20.glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE, args, 0);
    if (width > args[0] || height > args[0]) {
        throw new IllegalArgumentException("GL_MAX_RENDERBUFFER_SIZE " + args[0]);
    }

    GLES20.glGetIntegerv(GL_FRAMEBUFFER_BINDING, args, 0);
    final int saveFramebuffer = args[0];
    GLES20.glGetIntegerv(GL_RENDERBUFFER_BINDING, args, 0);
    final int saveRenderbuffer = args[0];
    GLES20.glGetIntegerv(GL_TEXTURE_BINDING_2D, args, 0);
    final int saveTexName = args[0];

    release();

    try {
        this.width = width;
        this.height = height;

        GLES20.glGenFramebuffers(args.length, args, 0);
        framebufferName = args[0];
        GLES20.glBindFramebuffer(GL_FRAMEBUFFER, framebufferName);

        GLES20.glGenRenderbuffers(args.length, args, 0);
        renderBufferName = args[0];
        GLES20.glBindRenderbuffer(GL_RENDERBUFFER, renderBufferName);
        GLES20.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height);
        GLES20.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, renderBufferName);

        GLES20.glGenTextures(args.length, args, 0);
        texName = args[0];
        GLES20.glBindTexture(GL_TEXTURE_2D, texName);

        EglUtil.setupSampler(GL_TEXTURE_2D, GL_LINEAR, GL_NEAREST);

        GLES20.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, null);
        GLES20.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texName, 0);

        final int status = GLES20.glCheckFramebufferStatus(GL_FRAMEBUFFER);
        if (status != GL_FRAMEBUFFER_COMPLETE) {
            throw new RuntimeException("Failed to initialize framebuffer object " + status);
        }
    } catch (final RuntimeException e) {
        release();
        throw e;
    }

    GLES20.glBindFramebuffer(GL_FRAMEBUFFER, saveFramebuffer);
    GLES20.glBindRenderbuffer(GL_RENDERBUFFER, saveRenderbuffer);
    GLES20.glBindTexture(GL_TEXTURE_2D, saveTexName);
}
 

/**
 * Prepares the off-screen framebuffer.
 */
private void prepareFramebuffer(int width, int height) {
    GlUtil.checkGlError("prepareFramebuffer start");

    int[] values = new int[1];

    // Create a texture object and bind it.  This will be the color buffer.
    GLES20.glGenTextures(1, values, 0);
    GlUtil.checkGlError("glGenTextures");
    mOffscreenTexture = values[0];   // expected > 0
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mOffscreenTexture);
    GlUtil.checkGlError("glBindTexture " + mOffscreenTexture);

    // Create texture storage.
    GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, width, height, 0,
            GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, null);

    // Set parameters.  We're probably using non-power-of-two dimensions, so
    // some values may not be available for use.
    GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER,
            GLES20.GL_NEAREST);
    GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER,
            GLES20.GL_LINEAR);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S,
            GLES20.GL_CLAMP_TO_EDGE);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T,
            GLES20.GL_CLAMP_TO_EDGE);
    GlUtil.checkGlError("glTexParameter");

    // Create framebuffer object and bind it.
    GLES20.glGenFramebuffers(1, values, 0);
    GlUtil.checkGlError("glGenFramebuffers");
    mFramebuffer = values[0];    // expected > 0
    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, mFramebuffer);
    GlUtil.checkGlError("glBindFramebuffer " + mFramebuffer);

    // Create a depth buffer and bind it.
    GLES20.glGenRenderbuffers(1, values, 0);
    GlUtil.checkGlError("glGenRenderbuffers");
    mDepthBuffer = values[0];    // expected > 0
    GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, mDepthBuffer);
    GlUtil.checkGlError("glBindRenderbuffer " + mDepthBuffer);

    // Allocate storage for the depth buffer.
    GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16,
            width, height);
    GlUtil.checkGlError("glRenderbufferStorage");

    // Attach the depth buffer and the texture (color buffer) to the framebuffer object.
    GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT,
            GLES20.GL_RENDERBUFFER, mDepthBuffer);
    GlUtil.checkGlError("glFramebufferRenderbuffer");
    GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0,
            GLES20.GL_TEXTURE_2D, mOffscreenTexture, 0);
    GlUtil.checkGlError("glFramebufferTexture2D");

    // See if GLES is happy with all this.
    int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
    if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
        throw new RuntimeException("Framebuffer not complete, status=" + status);
    }

    // Switch back to the default framebuffer.
    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);

    GlUtil.checkGlError("prepareFramebuffer done");
}
 

public void setup(final int width, final int height) {
    final int[] args = new int[1];

    GLES20.glGetIntegerv(GL_MAX_TEXTURE_SIZE, args, 0);
    if (width > args[0] || height > args[0]) {
        throw new IllegalArgumentException("GL_MAX_TEXTURE_SIZE " + args[0]);
    }

    GLES20.glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE, args, 0);
    if (width > args[0] || height > args[0]) {
        throw new IllegalArgumentException("GL_MAX_RENDERBUFFER_SIZE " + args[0]);
    }

    GLES20.glGetIntegerv(GL_FRAMEBUFFER_BINDING, args, 0);
    final int saveFramebuffer = args[0];
    GLES20.glGetIntegerv(GL_RENDERBUFFER_BINDING, args, 0);
    final int saveRenderbuffer = args[0];
    GLES20.glGetIntegerv(GL_TEXTURE_BINDING_2D, args, 0);
    final int saveTexName = args[0];

    release();

    try {
        this.width = width;
        this.height = height;

        GLES20.glGenFramebuffers(args.length, args, 0);
        framebufferName = args[0];
        GLES20.glBindFramebuffer(GL_FRAMEBUFFER, framebufferName);

        GLES20.glGenRenderbuffers(args.length, args, 0);
        renderBufferName = args[0];
        GLES20.glBindRenderbuffer(GL_RENDERBUFFER, renderBufferName);
        GLES20.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height);
        GLES20.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, renderBufferName);

        GLES20.glGenTextures(args.length, args, 0);
        texName = args[0];
        GLES20.glBindTexture(GL_TEXTURE_2D, texName);

        EglUtil.setupSampler(GL_TEXTURE_2D, GL_LINEAR, GL_NEAREST);

        GLES20.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, null);
        GLES20.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texName, 0);

        final int status = GLES20.glCheckFramebufferStatus(GL_FRAMEBUFFER);
        if (status != GL_FRAMEBUFFER_COMPLETE) {
            throw new RuntimeException("Failed to initialize framebuffer object " + status);
        }
    } catch (final RuntimeException e) {
        release();
        throw e;
    }

    GLES20.glBindFramebuffer(GL_FRAMEBUFFER, saveFramebuffer);
    GLES20.glBindRenderbuffer(GL_RENDERBUFFER, saveRenderbuffer);
    GLES20.glBindTexture(GL_TEXTURE_2D, saveTexName);
}
 

private void initFBO() {
		if(firstPassFrameBuffer != null) {
			GLES20.glDeleteFramebuffers(1, firstPassFrameBuffer, 0);
			firstPassFrameBuffer = null;
		}
		if(firstPassTextureOut != null) {
			GLES20.glDeleteTextures(1, firstPassTextureOut, 0);
			firstPassTextureOut = null;
		}
		if(firstPassDepthRenderBuffer != null) {
			GLES20.glDeleteRenderbuffers(1, firstPassDepthRenderBuffer, 0);
			firstPassDepthRenderBuffer = null;
		}
		firstPassFrameBuffer = new int[1];
		firstPassTextureOut = new int[1];
		firstPassDepthRenderBuffer = new int[1];
		GLES20.glGenFramebuffers(1, firstPassFrameBuffer, 0);
		GLES20.glGenRenderbuffers(1, firstPassDepthRenderBuffer, 0);
		GLES20.glGenTextures(1, firstPassTextureOut, 0);
		
		GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, firstPassFrameBuffer[0]);
		
		GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
		GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, firstPassTextureOut[0]);
		GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGB, getWidth(), getHeight(), 0, GLES20.GL_RGB, GLES20.GL_UNSIGNED_SHORT_5_6_5, null);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
		GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, firstPassTextureOut[0], 0);
		
		GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, firstPassDepthRenderBuffer[0]);
		GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, getWidth(), getHeight());
		GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER, firstPassDepthRenderBuffer[0]);
		
		int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
		if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
			throw new RuntimeException(this+": Failed to set up render buffer with status "+status+" and error "+GLES20.glGetError());
		}
	} 

private void initFBO() {
		if(firstPassFrameBuffer != null) {
			GLES20.glDeleteFramebuffers(1, firstPassFrameBuffer, 0);
			firstPassFrameBuffer = null;
		}
		if(firstPassTextureOut != null) {
			GLES20.glDeleteTextures(1, firstPassTextureOut, 0);
			firstPassTextureOut = null;
		}
		if(firstPassDepthRenderBuffer != null) {
			GLES20.glDeleteRenderbuffers(1, firstPassDepthRenderBuffer, 0);
			firstPassDepthRenderBuffer = null;
		}
		firstPassFrameBuffer = new int[1];
		firstPassTextureOut = new int[1];
		firstPassDepthRenderBuffer = new int[1];
		GLES20.glGenFramebuffers(1, firstPassFrameBuffer, 0);
		GLES20.glGenRenderbuffers(1, firstPassDepthRenderBuffer, 0);
		GLES20.glGenTextures(1, firstPassTextureOut, 0);
		
		GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, firstPassFrameBuffer[0]);
		
		GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
		GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, firstPassTextureOut[0]);
		GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGB, getWidth(), getHeight(), 0, GLES20.GL_RGB, GLES20.GL_UNSIGNED_SHORT_5_6_5, null);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
		GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, firstPassTextureOut[0], 0);
		
		GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, firstPassDepthRenderBuffer[0]);
		GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, getWidth(), getHeight());
		GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER, firstPassDepthRenderBuffer[0]);
		
		int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
		if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
			throw new RuntimeException(this+": Failed to set up render buffer with status "+status+" and error "+GLES20.glGetError());
		}
	} 

private void initFBO() {
		if(frameBuffer != null) {
			GLES20.glDeleteFramebuffers(1, frameBuffer, 0);
			frameBuffer = null;
		}
		if(texture_out != null) {
			GLES20.glDeleteTextures(1, texture_out, 0);
			texture_out = null;
		}
		if(depthRenderBuffer != null) {
			GLES20.glDeleteRenderbuffers(1, depthRenderBuffer, 0);
			depthRenderBuffer = null;
		}
		frameBuffer = new int[1];
		texture_out = new int[1];
		depthRenderBuffer = new int[1];
		GLES20.glGenFramebuffers(1, frameBuffer, 0);
		GLES20.glGenRenderbuffers(1, depthRenderBuffer, 0);
		GLES20.glGenTextures(1, texture_out, 0);
		
		GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, frameBuffer[0]);
		
		GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
		GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texture_out[0]);
		GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, getWidth(), getHeight(), 0, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, null);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
		GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, texture_out[0], 0);
		
		GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, depthRenderBuffer[0]);
		GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, getWidth(), getHeight());
		GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER, depthRenderBuffer[0]);
		
		int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
		if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
			throw new RuntimeException(this+": Failed to set up render buffer with status "+status+" and error "+GLES20.glGetError());
		}
	} 

private void initFBO() {
		if(frameBuffer != null) {
			GLES20.glDeleteFramebuffers(1, frameBuffer, 0);
			frameBuffer = null;
		}
		if(texture_out != null) {
			GLES20.glDeleteTextures(1, texture_out, 0);
			texture_out = null;
		}
		if(depthRenderBuffer != null) {
			GLES20.glDeleteRenderbuffers(1, depthRenderBuffer, 0);
			depthRenderBuffer = null;
		}
		frameBuffer = new int[1];
		texture_out = new int[1];
		depthRenderBuffer = new int[1];
		GLES20.glGenFramebuffers(1, frameBuffer, 0);
		GLES20.glGenRenderbuffers(1, depthRenderBuffer, 0);
		GLES20.glGenTextures(1, texture_out, 0);
		
		GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, frameBuffer[0]);
		
		GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
		GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texture_out[0]);
		GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, getWidth(), getHeight(), 0, GLES20.GL_RGBA, GLES20.GL_UNSIGNED_BYTE, null);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
		GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
		GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, texture_out[0], 0);
		
		GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, depthRenderBuffer[0]);
		GLES20.glRenderbufferStorage(GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, getWidth(), getHeight());
		GLES20.glFramebufferRenderbuffer(GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER, depthRenderBuffer[0]);
		
		int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
		if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
			throw new RuntimeException(this+": Failed to set up render buffer with status "+status+" and error "+GLES20.glGetError());
		}
	}