Android Open Source - android_cubism Cubism Renderer

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License

The source code is released under:

Apache License

Java Source Code

/*
   Copyright 2012 Harri Smatt//from  www  .  j  av a 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 fi.harism.cubism;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.nio.ByteBuffer;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.content.Context;
import android.graphics.BitmapFactory;
import android.media.MediaPlayer;
import android.opengl.GLES30;
import android.opengl.GLSurfaceView;
import android.opengl.Matrix;
import android.os.Handler;
import android.os.Looper;
import android.widget.Toast;

public final class CubismRenderer extends GLSurfaceView implements
    GLSurfaceView.Renderer {

  private final AnimationRunnable mAnimationRunnable = new AnimationRunnable();
  private ByteBuffer mBufferQuad;
  private Context mContext;
  private final CubismFbo mFboCubeMap = new CubismFbo();
  private final CubismFbo mFboFull = new CubismFbo();
  private final CubismFbo mFboQuarter = new CubismFbo();
  private int mInitCounter;
  private final float[] mMatrixExtrude = new float[16];
  private final float[] mMatrixProjection = new float[16];
  private final float[] mMatrixProjectionDepth = new float[16];
  private final float[] mMatrixRotate = new float[16];
  private final float[] mMatrixView = new float[16];
  private final float[] mMatrixViewExtrude = new float[16];
  private final float[] mMatrixViewLight = new float[16];
  private final float[] mMatrixViewProjection = new float[16];
  private MediaPlayer mMediaPlayer;
  private final Model[] mModels;
  private CubismParser mParser;
  private final CubismParser.Data mParserData = new CubismParser.Data();
  private final float[] mPlanes = new float[24];
  private final CubismShader mShaderBloom1 = new CubismShader();
  private final CubismShader mShaderBloom2 = new CubismShader();
  private final CubismShader mShaderBloom3 = new CubismShader();
  private final boolean[] mShaderCompilerSupport = new boolean[1];
  private final CubismShader mShaderDefault = new CubismShader();
  private final CubismShader mShaderDepth = new CubismShader();
  private final CubismShader mShaderDepthMap = new CubismShader();
  private final CubismShader mShaderStencil = new CubismShader();
  private final CubismShader mShaderStencilMask = new CubismShader();
  private final CubismCube mSkybox = new CubismCube();
  private int mWidth, mHeight;

  public CubismRenderer(Context context, CubismParser parser,
      MediaPlayer mediaPlayer) {
    super(context);

    mContext = context;
    mParser = parser;
    mMediaPlayer = mediaPlayer;

    setEGLContextClientVersion(3);
    setRenderer(this);
    setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);

    // Create full scene quad buffer.
    final byte FULL_QUAD_COORDS[] = { -1, 1, -1, -1, 1, 1, 1, -1 };
    mBufferQuad = ByteBuffer.allocateDirect(4 * 2);
    mBufferQuad.put(FULL_QUAD_COORDS).position(0);

    mSkybox.setScale(-10f);

    mModels = new Model[8];
    mModels[0] = new CubismModelBasic();
    mModels[1] = new CubismModelExplosion(10);
    mModels[2] = new CubismModelRandom(6);
    mModels[3] = new CubismModelBitmap(BitmapFactory.decodeStream(mContext
        .getResources().openRawResource(R.raw.img_cubism)));
    mModels[4] = new CubismModelBitmap(BitmapFactory.decodeStream(mContext
        .getResources().openRawResource(R.raw.img_harism)));
    mModels[5] = new CubismModelBitmap(BitmapFactory.decodeStream(mContext
        .getResources().openRawResource(R.raw.img_heart)));
    mModels[6] = new CubismModelBitmap(BitmapFactory.decodeStream(mContext
        .getResources().openRawResource(R.raw.img_jinny)));
    mModels[7] = new CubismModelExplosionShadowVolume(6);

    queueEvent(mAnimationRunnable);
  }

  /**
   * Loads String from raw resources with given id.
   */
  private String loadRawString(int rawId) throws Exception {
    InputStream is = mContext.getResources().openRawResource(rawId);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    byte[] buf = new byte[1024];
    int len;
    while ((len = is.read(buf)) != -1) {
      baos.write(buf, 0, len);
    }
    return baos.toString();
  }

  @Override
  public void onDrawFrame(GL10 unused) {

    /**
     * Initialize OpenGL context.
     */
    switch (mInitCounter) {
    case 0: {
      // Check if shader compiler is supported.
      GLES30.glGetBooleanv(GLES30.GL_SHADER_COMPILER,
          mShaderCompilerSupport, 0);

      // If not, show user an error message and return immediately.
      if (!mShaderCompilerSupport[0]) {
        String msg = mContext.getString(R.string.error_shader_compiler);
        showError(msg);
      }
    }
    case 1: {
      GLES30.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
      GLES30.glClear(GLES30.GL_COLOR_BUFFER_BIT);
      if (!mShaderCompilerSupport[0]) {
        mInitCounter = 1;
        return;
      }
      mInitCounter = 2;
      return;
    }
    case 2: {

      // Load vertex and fragment shaders.
      try {
        String vertexSource, fragmentSource;
        vertexSource = loadRawString(R.raw.default_vs);
        fragmentSource = loadRawString(R.raw.default_fs);
        mShaderDefault.setProgram(vertexSource, fragmentSource);
        vertexSource = loadRawString(R.raw.depthmap_vs);
        fragmentSource = loadRawString(R.raw.depthmap_fs);
        mShaderDepthMap.setProgram(vertexSource, fragmentSource);
        vertexSource = loadRawString(R.raw.depth_vs);
        fragmentSource = loadRawString(R.raw.depth_fs);
        mShaderDepth.setProgram(vertexSource, fragmentSource);
        vertexSource = loadRawString(R.raw.stencil_vs);
        fragmentSource = loadRawString(R.raw.stencil_fs);
        mShaderStencil.setProgram(vertexSource, fragmentSource);
        vertexSource = loadRawString(R.raw.stencil_mask_vs);
        fragmentSource = loadRawString(R.raw.stencil_mask_fs);
        mShaderStencilMask.setProgram(vertexSource, fragmentSource);
        vertexSource = loadRawString(R.raw.bloom_vs);
        fragmentSource = loadRawString(R.raw.bloom_pass1_fs);
        mShaderBloom1.setProgram(vertexSource, fragmentSource);
        vertexSource = loadRawString(R.raw.bloom_vs);
        fragmentSource = loadRawString(R.raw.bloom_pass2_fs);
        mShaderBloom2.setProgram(vertexSource, fragmentSource);
        vertexSource = loadRawString(R.raw.bloom_vs);
        fragmentSource = loadRawString(R.raw.bloom_pass3_fs);
        mShaderBloom3.setProgram(vertexSource, fragmentSource);
      } catch (Exception ex) {
        showError(ex.getMessage());
      }
    }
    case 3: {
      float aspectR = (float) mWidth / mHeight;
      CubismUtils.setPerspectiveM(mMatrixProjection, 45f, aspectR, .1f,
          40f);
      CubismUtils.setPerspectiveM(mMatrixProjectionDepth, 90f, 1f, .1f,
          40f);
      CubismUtils.setExtrudeM(mMatrixExtrude, 45f, aspectR, .1f);

      mFboCubeMap.init(512, 512, GLES30.GL_TEXTURE_CUBE_MAP, 1, true);
      mFboQuarter.init(mWidth / 4, mHeight / 4, 2);
      mFboFull.init(mWidth, mHeight, GLES30.GL_TEXTURE_2D, 1, true);

      mInitCounter = 4;
    }
    }

    /**
     * Actual scene rendering.
     */

    int renderMode = mModels[mParserData.mModelId].getRenderMode();
    switch (renderMode) {
    case Model.MODE_SHADOWMAP: {
      renderDepthMap();

      mFboFull.bindTexture(GLES30.GL_TEXTURE_2D, 0);
      GLES30.glClear(GLES30.GL_DEPTH_BUFFER_BIT);

      renderScene(renderMode);
      renderBloom();
      break;
    }
    case Model.MODE_SHADOWVOLUME: {
      mFboFull.bindTexture(GLES30.GL_TEXTURE_2D, 0);
      GLES30.glClear(GLES30.GL_DEPTH_BUFFER_BIT
          | GLES30.GL_STENCIL_BUFFER_BIT);

      renderScene(renderMode);
      renderShadowStencil();

      GLES30.glEnable(GLES30.GL_STENCIL_TEST);
      GLES30.glEnable(GLES30.GL_BLEND);
      GLES30.glStencilFunc(GLES30.GL_NOTEQUAL, 0x00, 0xFF);
      GLES30.glBlendFunc(GLES30.GL_SRC_ALPHA,
          GLES30.GL_ONE_MINUS_SRC_ALPHA);

      mShaderStencilMask.useProgram();
      GLES30.glVertexAttribPointer(
          mShaderStencilMask.getHandle("aPosition"), 2,
          GLES30.GL_BYTE, false, 0, mBufferQuad);
      GLES30.glEnableVertexAttribArray(mShaderStencilMask
          .getHandle("aPosition"));
      GLES30.glDrawArrays(GLES30.GL_TRIANGLE_STRIP, 0, 4);

      GLES30.glDisable(GLES30.GL_STENCIL_TEST);
      GLES30.glDisable(GLES30.GL_BLEND);

      renderBloom();
      break;
    }
    }

    queueEvent(mAnimationRunnable);
  }

  @Override
  public void onSurfaceChanged(GL10 unused, int width, int height) {
    mWidth = width;
    mHeight = height;

    if (mInitCounter > 3) {
      mInitCounter = 3;
    }
  }

  @Override
  public void onSurfaceCreated(GL10 unused, EGLConfig config) {
    mInitCounter = 0;
  }

  private void renderBloom() {
    /**
     * Instantiate variables for bloom filter.
     */

    // Pixel sizes.
    float blurSizeH = 1f / mFboQuarter.getWidth();
    float blurSizeV = 1f / mFboQuarter.getHeight();

    // Calculate number of pixels from relative size.
    int numBlurPixelsPerSide = (int) (0.05f * Math.min(
        mFboQuarter.getWidth(), mFboQuarter.getHeight()));
    if (numBlurPixelsPerSide < 1)
      numBlurPixelsPerSide = 1;
    double sigma = 1.0 + numBlurPixelsPerSide * 0.5;

    // Values needed for incremental gaussian blur.
    double incrementalGaussian1 = 1.0 / (Math.sqrt(2.0 * Math.PI) * sigma);
    double incrementalGaussian2 = Math.exp(-0.5 / (sigma * sigma));
    double incrementalGaussian3 = incrementalGaussian2
        * incrementalGaussian2;

    GLES30.glDisable(GLES30.GL_DEPTH_TEST);

    /**
     * First pass, blur texture horizontally.
     */

    mFboQuarter.bindTexture(GLES30.GL_TEXTURE_2D, 0);
    mShaderBloom1.useProgram();

    GLES30.glActiveTexture(GLES30.GL_TEXTURE0);
    GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mFboFull.getTexture(0));
    GLES30.glUniform3f(mShaderBloom1.getHandle("uIncrementalGaussian"),
        (float) incrementalGaussian1, (float) incrementalGaussian2,
        (float) incrementalGaussian3);
    GLES30.glUniform1f(mShaderBloom1.getHandle("uNumBlurPixelsPerSide"),
        numBlurPixelsPerSide);
    GLES30.glUniform2f(mShaderBloom1.getHandle("uBlurOffset"), blurSizeH,
        0f);

    GLES30.glVertexAttribPointer(mShaderBloom1.getHandle("aPosition"), 2,
        GLES30.GL_BYTE, false, 0, mBufferQuad);
    GLES30.glEnableVertexAttribArray(mShaderBloom1.getHandle("aPosition"));
    GLES30.glDrawArrays(GLES30.GL_TRIANGLE_STRIP, 0, 4);

    /**
     * Second pass, blur texture vertically.
     */
    mFboQuarter.bindTexture(GLES30.GL_TEXTURE_2D, 1);
    mShaderBloom2.useProgram();

    GLES30.glActiveTexture(GLES30.GL_TEXTURE0);
    GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mFboQuarter.getTexture(0));
    GLES30.glUniform3f(mShaderBloom2.getHandle("uIncrementalGaussian"),
        (float) incrementalGaussian1, (float) incrementalGaussian2,
        (float) incrementalGaussian3);
    GLES30.glUniform1f(mShaderBloom2.getHandle("uNumBlurPixelsPerSide"),
        numBlurPixelsPerSide);
    GLES30.glUniform2f(mShaderBloom2.getHandle("uBlurOffset"), 0f,
        blurSizeV);

    GLES30.glVertexAttribPointer(mShaderBloom2.getHandle("aPosition"), 2,
        GLES30.GL_BYTE, false, 0, mBufferQuad);
    GLES30.glEnableVertexAttribArray(mShaderBloom2.getHandle("aPosition"));
    GLES30.glDrawArrays(GLES30.GL_TRIANGLE_STRIP, 0, 4);

    /**
     * Third pass, combine source texture and calculated bloom texture into
     * output texture.
     */

    GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, 0);
    GLES30.glViewport(0, 0, mWidth, mHeight);

    mShaderBloom3.useProgram();

    GLES30.glActiveTexture(GLES30.GL_TEXTURE0);
    GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mFboQuarter.getTexture(1));
    GLES30.glUniform1i(mShaderBloom3.getHandle("sTextureBloom"), 0);
    GLES30.glActiveTexture(GLES30.GL_TEXTURE1);
    GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mFboFull.getTexture(0));
    GLES30.glUniform1i(mShaderBloom3.getHandle("sTextureSource"), 1);
    GLES30.glUniform4fv(mShaderBloom3.getHandle("uForegroundColor"), 1,
        mParserData.mForegroundColor, 0);

    GLES30.glVertexAttribPointer(mShaderBloom3.getHandle("aPosition"), 2,
        GLES30.GL_BYTE, false, 0, mBufferQuad);
    GLES30.glEnableVertexAttribArray(mShaderBloom3.getHandle("aPosition"));
    GLES30.glDrawArrays(GLES30.GL_TRIANGLE_STRIP, 0, 4);
  }

  public void renderDepthMap() {
    // Render shadow map forward.
    mFboCubeMap.bindTexture(GLES30.GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0);
    GLES30.glClear(GLES30.GL_DEPTH_BUFFER_BIT);
    CubismUtils.setRotateM(mMatrixRotate, 0f, 0f, 180f);
    renderDepthMapFace(mMatrixRotate);

    // Render shadow map right.
    mFboCubeMap.bindTexture(GLES30.GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0);
    GLES30.glClear(GLES30.GL_DEPTH_BUFFER_BIT);
    CubismUtils.setRotateM(mMatrixRotate, 0f, 90f, 180f);
    renderDepthMapFace(mMatrixRotate);

    // Render shadow map back.
    mFboCubeMap.bindTexture(GLES30.GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0);
    GLES30.glClear(GLES30.GL_DEPTH_BUFFER_BIT);
    CubismUtils.setRotateM(mMatrixRotate, 0f, 180f, 180f);
    renderDepthMapFace(mMatrixRotate);

    // Render shadow map left.
    mFboCubeMap.bindTexture(GLES30.GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0);
    GLES30.glClear(GLES30.GL_DEPTH_BUFFER_BIT);
    CubismUtils.setRotateM(mMatrixRotate, 0f, -90f, 180f);
    renderDepthMapFace(mMatrixRotate);

    // Render shadow map down.
    mFboCubeMap.bindTexture(GLES30.GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0);
    GLES30.glClear(GLES30.GL_DEPTH_BUFFER_BIT);
    CubismUtils.setRotateM(mMatrixRotate, -90f, 0f, 0f);
    renderDepthMapFace(mMatrixRotate);

    // Render shadow map up.
    mFboCubeMap.bindTexture(GLES30.GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0);
    GLES30.glClear(GLES30.GL_DEPTH_BUFFER_BIT);
    CubismUtils.setRotateM(mMatrixRotate, 90f, 0f, 0f);
    renderDepthMapFace(mMatrixRotate);
  }

  public void renderDepthMapFace(float[] viewRotateM) {
    // Render filled cube.
    mShaderDepth.useProgram();

    int uModelM = mShaderDepth.getHandle("uModelM");
    int uViewM = mShaderDepth.getHandle("uViewM");
    int uProjM = mShaderDepth.getHandle("uProjM");
    int aPosition = mShaderDepth.getHandle("aPosition");

    Matrix.multiplyMM(mMatrixViewProjection, 0, viewRotateM, 0,
        mMatrixViewLight, 0);

    GLES30.glUniformMatrix4fv(uViewM, 1, false, mMatrixViewProjection, 0);
    GLES30.glUniformMatrix4fv(uProjM, 1, false, mMatrixProjectionDepth, 0);

    GLES30.glVertexAttribPointer(aPosition, 3, GLES30.GL_BYTE, false, 0,
        CubismCube.getVertices());
    GLES30.glEnableVertexAttribArray(aPosition);

    GLES30.glEnable(GLES30.GL_CULL_FACE);
    GLES30.glEnable(GLES30.GL_DEPTH_TEST);

    Matrix.multiplyMM(mMatrixViewProjection, 0, mMatrixProjectionDepth, 0,
        mMatrixViewProjection, 0);
    CubismVisibility.extractPlanes(mMatrixViewProjection, mPlanes);

    CubismCube[] cubes = mModels[mParserData.mModelId].getCubes();
    for (int i = 0; i < cubes.length; ++i) {
      if (CubismVisibility.intersects(mPlanes,
          cubes[i].getBoundingSphere())) {
        GLES30.glUniformMatrix4fv(uModelM, 1, false,
            cubes[i].getModelM(), 0);
        GLES30.glDrawArrays(GLES30.GL_TRIANGLES, 0, 6 * 6);
      }
    }

    GLES30.glUniformMatrix4fv(uModelM, 1, false, mSkybox.getModelM(), 0);

    GLES30.glDrawArrays(GLES30.GL_TRIANGLES, 0, 6 * 6);

    GLES30.glDisable(GLES30.GL_CULL_FACE);
  }

  public void renderScene(int renderMode) {
    CubismShader shader;
    if (renderMode == Model.MODE_SHADOWMAP) {
      shader = mShaderDepthMap;
    } else {
      shader = mShaderDefault;
    }

    shader.useProgram();
    int uModelM = shader.getHandle("uModelM");
    int uViewM = shader.getHandle("uViewM");
    int uProjM = shader.getHandle("uProjM");
    int uLightPos = shader.getHandle("uLightPos");
    int uColor = shader.getHandle("uColor");
    int aPosition = shader.getHandle("aPosition");
    int aNormal = shader.getHandle("aNormal");

    GLES30.glUniform3fv(uLightPos, 1, mParserData.mLightPosition, 0);

    GLES30.glVertexAttribPointer(aPosition, 3, GLES30.GL_BYTE, false, 0,
        CubismCube.getVertices());
    GLES30.glEnableVertexAttribArray(aPosition);

    GLES30.glVertexAttribPointer(aNormal, 3, GLES30.GL_BYTE, false, 0,
        CubismCube.getNormals());
    GLES30.glEnableVertexAttribArray(aNormal);

    if (renderMode == Model.MODE_SHADOWMAP) {
      GLES30.glActiveTexture(GLES30.GL_TEXTURE0);
      GLES30.glBindTexture(GLES30.GL_TEXTURE_CUBE_MAP,
          mFboCubeMap.getTexture(0));
    }

    GLES30.glEnable(GLES30.GL_CULL_FACE);
    GLES30.glEnable(GLES30.GL_DEPTH_TEST);

    GLES30.glUniformMatrix4fv(uViewM, 1, false, mMatrixView, 0);
    GLES30.glUniformMatrix4fv(uProjM, 1, false, mMatrixProjection, 0);
    GLES30.glUniform3f(uColor, .4f, .6f, 1f);

    Matrix.multiplyMM(mMatrixViewProjection, 0, mMatrixProjection, 0,
        mMatrixView, 0);
    CubismVisibility.extractPlanes(mMatrixViewProjection, mPlanes);

    CubismCube[] cubes = mModels[mParserData.mModelId].getCubes();
    for (int i = 0; i < cubes.length; ++i) {
      if (CubismVisibility.intersects(mPlanes,
          cubes[i].getBoundingSphere())) {
        GLES30.glUniformMatrix4fv(uModelM, 1, false,
            cubes[i].getModelM(), 0);
        GLES30.glDrawArrays(GLES30.GL_TRIANGLES, 0, 6 * 6);
      }
    }

    GLES30.glUniformMatrix4fv(uModelM, 1, false, mSkybox.getModelM(), 0);
    GLES30.glUniform3f(uColor, .5f, .5f, .5f);

    GLES30.glVertexAttribPointer(aNormal, 3, GLES30.GL_BYTE, false, 0,
        CubismCube.getNormalsInv());
    GLES30.glEnableVertexAttribArray(aNormal);

    GLES30.glDrawArrays(GLES30.GL_TRIANGLES, 0, 6 * 6);

    GLES30.glDisable(GLES30.GL_CULL_FACE);
  }

  public void renderShadowStencil() {
    Matrix.multiplyMM(mMatrixViewProjection, 0, mMatrixProjection, 0,
        mMatrixView, 0);
    Matrix.multiplyMM(mMatrixViewExtrude, 0, mMatrixExtrude, 0,
        mMatrixView, 0);

    mShaderStencil.useProgram();
    int uModelM = mShaderStencil.getHandle("uModelM");
    int uViewProjectionM = mShaderStencil.getHandle("uViewProjectionM");
    int uViewExtrudeM = mShaderStencil.getHandle("uViewExtrudeM");
    int uLightPosition = mShaderStencil.getHandle("uLightPosition");
    int aPosition = mShaderStencil.getHandle("aPosition");
    int aNormal = mShaderStencil.getHandle("aNormal");

    GLES30.glUniform3fv(uLightPosition, 1, mParserData.mLightPosition, 0);

    GLES30.glVertexAttribPointer(aPosition, 4, GLES30.GL_BYTE, false, 0,
        CubismCube.getVerticesShadow());
    GLES30.glEnableVertexAttribArray(aPosition);

    GLES30.glVertexAttribPointer(aNormal, 3, GLES30.GL_BYTE, false, 0,
        CubismCube.getNormalsShadow());
    GLES30.glEnableVertexAttribArray(aNormal);

    GLES30.glDisable(GLES30.GL_CULL_FACE);
    GLES30.glEnable(GLES30.GL_DEPTH_TEST);
    GLES30.glEnable(GLES30.GL_STENCIL_TEST);
    // GLES30.glEnable(GLES30.GL_BLEND);

    GLES30.glUniformMatrix4fv(uViewProjectionM, 1, false,
        mMatrixViewProjection, 0);
    GLES30.glUniformMatrix4fv(uViewExtrudeM, 1, false, mMatrixViewExtrude,
        0);

    GLES30.glDepthMask(false);
    GLES30.glColorMask(false, false, false, false);
    // GLES30.glBlendFunc(GLES30.GL_SRC_ALPHA,
    // GLES30.GL_ONE_MINUS_SRC_ALPHA);

    GLES30.glStencilFunc(GLES30.GL_ALWAYS, 0x00, 0xFF);
    GLES30.glStencilOpSeparate(GLES30.GL_FRONT, GLES30.GL_KEEP,
        GLES30.GL_KEEP, GLES30.GL_INCR_WRAP);
    GLES30.glStencilOpSeparate(GLES30.GL_BACK, GLES30.GL_KEEP,
        GLES30.GL_KEEP, GLES30.GL_DECR_WRAP);

    CubismCube[] cubes = mModels[mParserData.mModelId].getCubes();
    for (int i = 0; i < cubes.length; ++i) {
      GLES30.glUniformMatrix4fv(uModelM, 1, false, cubes[i].getModelM(),
          0);
      GLES30.glDrawArrays(GLES30.GL_TRIANGLES, 0, 6 * 24);
    }

    GLES30.glDepthMask(true);
    GLES30.glColorMask(true, true, true, true);

    GLES30.glDisable(GLES30.GL_CULL_FACE);
    GLES30.glDisable(GLES30.GL_DEPTH_TEST);
    GLES30.glDisable(GLES30.GL_STENCIL_TEST);
    // GLES30.glDisable(GLES30.GL_BLEND);
  }

  /**
   * Shows Toast on screen with given message.
   */
  private void showError(final String errorMsg) {
    new Handler(Looper.getMainLooper()).post(new Runnable() {
      @Override
      public void run() {
        Toast.makeText(mContext, errorMsg, Toast.LENGTH_LONG).show();
      }
    });
  }

  private class AnimationRunnable implements Runnable {

    @Override
    public void run() {
      mParser.interpolate(mParserData,
          mMediaPlayer.getCurrentPosition() / 1000f);
      mModels[mParserData.mModelId].setInterpolation(mParserData.mModelT);

      final float[] pos = mParserData.mCameraPosition;
      final float[] la = mParserData.mCameraLookAt;
      final float[] lpos = mParserData.mLightPosition;
      Matrix.setLookAtM(mMatrixView, 0, pos[0], pos[1], pos[2], la[0],
          la[1], la[2], 0f, 1f, 0f);
      Matrix.setIdentityM(mMatrixViewLight, 0);
      Matrix.translateM(mMatrixViewLight, 0, -lpos[0], -lpos[1], -lpos[2]);
    }
  }

  public interface Model {
    public static final int MODE_SHADOWMAP = 1;
    public static final int MODE_SHADOWVOLUME = 2;

    public CubismCube[] getCubes();

    public int getRenderMode();

    public void setInterpolation(float t);
  }

}

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