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

private void renderBlit() {
    Shader shader = shaders.get("blit");
    if (shader == null) {
        return;
    }

    GLES20.glUseProgram(shader.program);

    GLES20.glUniformMatrix4fv(shader.getUniform("mvpMatrix"), 1, false, FloatBuffer.wrap(renderProjection));
    GLES20.glUniform1i(shader.getUniform("texture"), 0);

    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, getTexture());

    GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA);

    GLES20.glVertexAttribPointer(0, 2, GLES20.GL_FLOAT, false, 8, vertexBuffer);
    GLES20.glEnableVertexAttribArray(0);
    GLES20.glVertexAttribPointer(1, 2, GLES20.GL_FLOAT, false, 8, textureBuffer);
    GLES20.glEnableVertexAttribArray(1);

    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);

    Utils.HasGLError();
}
 

/**
 * Draw an OES texture frame with specified texture transformation matrix. Required resources
 * are allocated at the first call to this function.
 */
public void drawOes(
        int oesTextureId,
        float[] texMatrix,
        int frameWidth,
        int frameHeight,
        int viewportX,
        int viewportY,
        int viewportWidth,
        int viewportHeight) {
    prepareShader(OES_FRAGMENT_SHADER_STRING, texMatrix);
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    // updateTexImage() may be called from another thread in another EGL context, so we need to
    // bind/unbind the texture in each draw call so that GLES understads it's a new texture.
    GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, oesTextureId);
    drawRectangle(viewportX, viewportY, viewportWidth, viewportHeight);
    GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, 0);
}
 

private void renderBlit() {
    Shader shader = shaders.get("blit");
    if (shader == null) {
        return;
    }

    GLES20.glUseProgram(shader.program);

    GLES20.glUniformMatrix4fv(shader.getUniform("mvpMatrix"), 1, false, FloatBuffer.wrap(renderProjection));
    GLES20.glUniform1i(shader.getUniform("texture"), 0);

    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, getTexture());

    GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA);

    GLES20.glVertexAttribPointer(0, 2, GLES20.GL_FLOAT, false, 8, vertexBuffer);
    GLES20.glEnableVertexAttribArray(0);
    GLES20.glVertexAttribPointer(1, 2, GLES20.GL_FLOAT, false, 8, textureBuffer);
    GLES20.glEnableVertexAttribArray(1);

    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);

    Utils.HasGLError();
}
 

@Override
protected void drawFilter() {
  GLES20.glUseProgram(program);

  squareVertex.position(SQUARE_VERTEX_DATA_POS_OFFSET);
  GLES20.glVertexAttribPointer(aPositionHandle, 3, GLES20.GL_FLOAT, false,
      SQUARE_VERTEX_DATA_STRIDE_BYTES, squareVertex);
  GLES20.glEnableVertexAttribArray(aPositionHandle);

  squareVertex.position(SQUARE_VERTEX_DATA_UV_OFFSET);
  GLES20.glVertexAttribPointer(aTextureHandle, 2, GLES20.GL_FLOAT, false,
      SQUARE_VERTEX_DATA_STRIDE_BYTES, squareVertex);
  GLES20.glEnableVertexAttribArray(aTextureHandle);

  GLES20.glUniformMatrix4fv(uMVPMatrixHandle, 1, false, MVPMatrix, 0);
  GLES20.glUniformMatrix4fv(uSTMatrixHandle, 1, false, STMatrix, 0);
  GLES20.glUniform1f(uExposureHandle, exposure);

  GLES20.glUniform1i(uSamplerHandle, 4);
  GLES20.glActiveTexture(GLES20.GL_TEXTURE4);
  GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, previousTexId);
}
 

@Override
public void apply(long presentationTimeNs) {
    GlRenderUtils.checkGlError("onDrawFrame start");
    GLES20.glUseProgram(glProgram);
    GlRenderUtils.checkGlError("glUseProgram");
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, inputTextureId);

    GLES20.glUniformMatrix4fv(mvpMatrixHandle, 1, false, mvpMatrix, mvpMatrixOffset);
    GLES20.glUniformMatrix4fv(uStMatrixHandle, 1, false, inputTextureTransformMatrix, 0);

    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    GlRenderUtils.checkGlError("glDrawArrays");
}
 

/**
 * ISurfaceの実装
 */
@Override
public void swap() {
	if (DEBUG) Log.v(TAG, "swap:");
	GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
	GLES20.glActiveTexture(TEX_UNIT);
	GLES20.glBindTexture(TEX_TARGET, 0);
}
 

private void drawTex(int tex, boolean isOES, int fbo)
{
    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, fbo);

    if(fbo == 0)
        GLES20.glViewport(0, 0, mView.getWidth(), mView.getHeight());
    else
        GLES20.glViewport(0, 0, mFBOWidth, mFBOHeight);

    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);

    if(isOES) {
        GLES20.glUseProgram(progOES);
        GLES20.glVertexAttribPointer(vPosOES, 2, GLES20.GL_FLOAT, false, 4*2, vert);
        GLES20.glVertexAttribPointer(vTCOES,  2, GLES20.GL_FLOAT, false, 4*2, texOES);
    } else {
        GLES20.glUseProgram(prog2D);
        GLES20.glVertexAttribPointer(vPos2D, 2, GLES20.GL_FLOAT, false, 4*2, vert);
        GLES20.glVertexAttribPointer(vTC2D,  2, GLES20.GL_FLOAT, false, 4*2, tex2D);
    }

    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);

    if(isOES) {
        GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, tex);
        GLES20.glUniform1i(GLES20.glGetUniformLocation(progOES, "sTexture"), 0);
    } else {
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, tex);
        GLES20.glUniform1i(GLES20.glGetUniformLocation(prog2D, "sTexture"), 0);
    }

    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    GLES20.glFlush();
}
 

protected void onDrawArraysAfter(){
	if (mLookupSourceTexture != -1){
		GLES20.glActiveTexture(GLES20.GL_TEXTURE3);
		GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
		GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    }
}
 

private void drawTex(int tex, boolean isOES, int fbo)
{
    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, fbo);

    if(fbo == 0)
        GLES20.glViewport(0, 0, mView.getWidth(), mView.getHeight());
    else
        GLES20.glViewport(0, 0, mFBOWidth, mFBOHeight);

    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);

    if(isOES) {
        GLES20.glUseProgram(progOES);
        GLES20.glVertexAttribPointer(vPosOES, 2, GLES20.GL_FLOAT, false, 4*2, vert);
        GLES20.glVertexAttribPointer(vTCOES,  2, GLES20.GL_FLOAT, false, 4*2, texOES);
    } else {
        GLES20.glUseProgram(prog2D);
        GLES20.glVertexAttribPointer(vPos2D, 2, GLES20.GL_FLOAT, false, 4*2, vert);
        GLES20.glVertexAttribPointer(vTC2D,  2, GLES20.GL_FLOAT, false, 4*2, tex2D);
    }

    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);

    if(isOES) {
        GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, tex);
        GLES20.glUniform1i(GLES20.glGetUniformLocation(progOES, "sTexture"), 0);
    } else {
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, tex);
        GLES20.glUniform1i(GLES20.glGetUniformLocation(prog2D, "sTexture"), 0);
    }

    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    GLES20.glFlush();
}
 

public void setTexture(Texture2D img, Texture2D tfm) {
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, img.getHandle());
    GLES20.glUniform1i(mTextureHandle, 0); // bind texture unit 0 to the uniform

    GLES20.glActiveTexture(GLES20.GL_TEXTURE1);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, tfm.getHandle());
    GLES20.glUniform1i(mTextureHandle2, 1); // bind texture unit 1 to the uniform

    GLES20.glUniformMatrix4fv(mSTMatrixHandle, 1, false, img.getTransformMatrix(), 0);
}
 

public static void bindTexture2D(int textureId,int activeTextureID,int handle,int idx){
    if (textureId != GLEtc.NO_TEXTURE) {
        GLES20.glActiveTexture(activeTextureID);
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId);
        GLES20.glUniform1i(handle, idx);
    }
}
 

@Override
public void onDrawFrame() {
  FrameBuffer pendingOutputBuffer = pendingOutputBufferReference.getAndSet(null);
  if (pendingOutputBuffer == null && renderedOutputBuffer == null) {
    // There is no output buffer to render at the moment.
    return;
  }
  if (pendingOutputBuffer != null) {
    if (renderedOutputBuffer != null) {
      renderedOutputBuffer.release();
    }
    renderedOutputBuffer = pendingOutputBuffer;
  }

  FrameBuffer outputBuffer = renderedOutputBuffer;
  // Set color matrix. Assume BT709 if the color space is unknown.
  float[] colorConversion = kColorConversion709;
  /*switch (outputBuffer.pixelFormat) {
    case FrameBuffer.COLORSPACE_BT601:
      colorConversion = kColorConversion601;
      break;
    case FrameBuffer.COLORSPACE_BT2020:
      colorConversion = kColorConversion2020;
      break;
    case FrameBuffer.COLORSPACE_BT709:
    default:
      break; // Do nothing
  }*/

  int bitDepth = outputBuffer.bitDepth;
  int format = bitDepth == 1 ? GLES20.GL_LUMINANCE : GLES20.GL_LUMINANCE_ALPHA;

  GLES20.glUniformMatrix3fv(colorMatrixLocation, 1, false, colorConversion, 0);
  GLES20.glUniform1f(bitDepthLocation, bitDepth);

  for (int i = 0; i < 3; i++) {
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0 + i);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, yuvTextures[i]);

    int width = outputBuffer.yuvStrides[i] / bitDepth;
    int height = (i == 0) ? outputBuffer.height : outputBuffer.height / 2;

    GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
    GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, format,
            width, height, 0, format, GLES20.GL_UNSIGNED_BYTE,
            outputBuffer.yuvPlanes[i]);
  }
  // Set cropping of stride if either width or stride has changed.
  if (previousWidth != outputBuffer.width || previousStride != outputBuffer.yuvStrides[0]) {
    float crop = (float) outputBuffer.width * bitDepth / outputBuffer.yuvStrides[0];
    // This buffer is consumed during each call to glDrawArrays. It needs to be a member variable
    // rather than a local variable to ensure that it doesn't get garbage collected.
    textureCoords = nativeFloatBuffer(
            0.0f, 0.0f,
            0.0f, 1.0f,
            crop, 0.0f,
            crop, 1.0f);
    GLES20.glVertexAttribPointer(
            texLocation, 2, GLES20.GL_FLOAT, false, 0, textureCoords);
    previousWidth = outputBuffer.width;
    previousStride = outputBuffer.yuvStrides[0];
  }
  GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
  GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
  checkNoGLES2Error();
}
 

public void createOnGlThread(Context context, String text, int distance) {
    // Read the texture.
    Bitmap textureBitmap = null;
    try {
        textureBitmap = drawTextToAnnotation(context, text, metresReadable(distance));
        textureBitmap.setHasAlpha(true);
    } catch (Exception e) {
        Log.e(TAG, "Exception reading texture", e);
        return;
    }

    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glGenTextures(mTextures.length, mTextures, 0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextures[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.glBlendColor(0,0,0,0);
    GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);
    GLES20.glEnable(GLES20.GL_BLEND);
    GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, textureBitmap, 0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);

    textureBitmap.recycle();

    ShaderUtil.checkGLError(TAG, "Texture loading");

    // Build the geometry of a simple imageRenderer.

    int numVertices = 4;
    if (numVertices != QUAD_COORDS.length / COORDS_PER_VERTEX) {
        throw new RuntimeException("Unexpected number of vertices in BackgroundRenderer.");
    }

    ByteBuffer bbVertices = ByteBuffer.allocateDirect(QUAD_COORDS.length * Float.BYTES);
    bbVertices.order(ByteOrder.nativeOrder());
    mQuadVertices = bbVertices.asFloatBuffer();
    mQuadVertices.put(QUAD_COORDS);
    mQuadVertices.position(0);

    ByteBuffer bbTexCoords =
            ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * Float.BYTES);
    bbTexCoords.order(ByteOrder.nativeOrder());
    mQuadTexCoord = bbTexCoords.asFloatBuffer();
    mQuadTexCoord.put(QUAD_TEXCOORDS);
    mQuadTexCoord.position(0);

    ByteBuffer bbTexCoordsTransformed =
            ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * Float.BYTES);
    bbTexCoordsTransformed.order(ByteOrder.nativeOrder());

    int vertexShader = loadGLShader(TAG, GLES20.GL_VERTEX_SHADER, VERTEX_SHADER);
    int fragmentShader = loadGLShader(TAG, GLES20.GL_FRAGMENT_SHADER, FRAGMENT_SHADER);

    mQuadProgram = GLES20.glCreateProgram();
    GLES20.glAttachShader(mQuadProgram, vertexShader);
    GLES20.glAttachShader(mQuadProgram, fragmentShader);
    GLES20.glLinkProgram(mQuadProgram);
    GLES20.glUseProgram(mQuadProgram);

    ShaderUtil.checkGLError(TAG, "Program creation");

    mQuadPositionParam = GLES20.glGetAttribLocation(mQuadProgram, "a_Position");
    mQuadTexCoordParam = GLES20.glGetAttribLocation(mQuadProgram, "a_TexCoord");
    mTextureUniform = GLES20.glGetUniformLocation(mQuadProgram, "u_Texture");
    mModelViewProjectionUniform =
            GLES20.glGetUniformLocation(mQuadProgram, "u_ModelViewProjection");

    ShaderUtil.checkGLError(TAG, "Program parameters");

    Matrix.setIdentityM(mModelMatrix, 0);
}
 

@Override
public void onDrawFrame(GL10 glUnused) {
    super.onDrawFrame(glUnused);

    //curProgram = createProgram(getVertexShader(), mBitmapEffect.getShader(mSurfaceView));

    GLES20.glUseProgram(curProgram);
    checkGlError("glUseProgram");

    //绑定注入bitmap
    int mFilterInputTextureUniform2 = GLES20.glGetUniformLocation(curProgram, "sTexture2");
    GLES20.glActiveTexture(GLES20.GL_TEXTURE3);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTexturesBitmap[0]);
    GLES20.glUniform1i(mFilterInputTextureUniform2, mTexturesBitmap[0]);

    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
    GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT,
            false, TRIANGLE_VERTICES_DATA_STRIDE_BYTES,
            mTriangleVertices);
    checkGlError("glVertexAttribPointer maPosition");
    GLES20.glEnableVertexAttribArray(maPositionHandle);
    checkGlError("glEnableVertexAttribArray maPositionHandle");

    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
    GLES20.glVertexAttribPointer(maTextureHandle, 3, GLES20.GL_FLOAT,
            false, TRIANGLE_VERTICES_DATA_STRIDE_BYTES,
            mTriangleVertices);
    checkGlError("glVertexAttribPointer maTextureHandle");
    GLES20.glEnableVertexAttribArray(maTextureHandle);
    checkGlError("glEnableVertexAttribArray maTextureHandle");

    GLES20.glUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);


    GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);

    //水印透明
    GLES20.glEnable(GLES20.GL_BLEND);
    GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);

    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    checkGlError("glDrawArrays");

    GLES20.glFinish();
    GLES20.glDisable(GLES20.GL_BLEND);
}
 

@Override
public void drawFrame(int textureId, float[] texMatrix, float[] mvpMatrix) {
    GlUtil.checkGlError("draw start");

    // Select the program.
    GLES20.glUseProgram(mProgramHandle);
    GlUtil.checkGlError("glUseProgram");

    // Set the texture.
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId);

    // Copy the model / view / projection matrix over.
    GLES20.glUniformMatrix4fv(muMVPMatrixLoc, 1, false, mvpMatrix, 0);
    GlUtil.checkGlError("glUniformMatrix4fv");

    // Copy the texture transformation matrix over.
    GLES20.glUniformMatrix4fv(muTexMatrixLoc, 1, false, texMatrix, 0);
    GlUtil.checkGlError("glUniformMatrix4fv");

    // Enable the "aPosition" vertex attribute.
    GLES20.glEnableVertexAttribArray(maPositionLoc);
    GlUtil.checkGlError("glEnableVertexAttribArray");

    // Connect vertexBuffer to "aPosition".
    GLES20.glVertexAttribPointer(
            maPositionLoc,
            Drawable2d.COORDS_PER_VERTEX,
            GLES20.GL_FLOAT,
            false,
            Drawable2d.VERTEXTURE_STRIDE,
            mDrawable2d.vertexArray());
    GlUtil.checkGlError("glVertexAttribPointer");

    // Enable the "aTextureCoord" vertex attribute.
    GLES20.glEnableVertexAttribArray(maTextureCoordLoc);
    GlUtil.checkGlError("glEnableVertexAttribArray");

    // Connect texBuffer to "aTextureCoord".
    GLES20.glVertexAttribPointer(
            maTextureCoordLoc,
            2,
            GLES20.GL_FLOAT,
            false,
            Drawable2d.TEXTURE_COORD_STRIDE,
            mDrawable2d.texCoordArray());
    GlUtil.checkGlError("glVertexAttribPointer");

    // Draw the rect.
    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, mDrawable2d.vertexCount());
    GlUtil.checkGlError("glDrawArrays");

    // Done -- disable vertex array, texture, and program.
    GLES20.glDisableVertexAttribArray(maPositionLoc);
    GLES20.glDisableVertexAttribArray(maTextureCoordLoc);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
    GLES20.glUseProgram(0);
}
 

@Override
public void run() {
    if (!initied) {
        return;
    }

    if (!eglContext.equals(egl10.eglGetCurrentContext()) || !eglSurface.equals(egl10.eglGetCurrentSurface(EGL10.EGL_DRAW))) {
        if (!egl10.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext)) {
            if (BuildVars.LOGS_ENABLED) {
                FileLog.e("eglMakeCurrent failed " + GLUtils.getEGLErrorString(egl10.eglGetError()));
            }
            return;
        }
    }

    if (updateSurface) {
        videoSurfaceTexture.updateTexImage();
        videoSurfaceTexture.getTransformMatrix(videoTextureMatrix);
        if (videoWidth == 0 || videoHeight == 0) {
            videoWidth = surfaceWidth;
            videoHeight = surfaceHeight;
            if (videoWidth > 1280 || videoHeight > 1280) {
                videoWidth /= 2;
                videoHeight /= 2;
            }
        }
        if (!renderDataSet && videoWidth > 0 && videoHeight > 0) {
            filterShaders.setRenderData(currentBitmap, orientation, videoTexture[0], videoWidth, videoHeight);
            renderDataSet = true;
            renderBufferWidth = filterShaders.getRenderBufferWidth();
            renderBufferHeight = filterShaders.getRenderBufferHeight();
        }
        updateSurface = false;
        filterShaders.onVideoFrameUpdate(videoTextureMatrix);
        videoFrameAvailable = true;
    }

    if (!renderDataSet) {
        return;
    }

    if (videoDelegate == null || videoFrameAvailable) {
        GLES20.glViewport(0, 0, renderBufferWidth, renderBufferHeight);
        filterShaders.drawEnhancePass();
        if (videoDelegate == null) {
            filterShaders.drawSharpenPass();
        }
        filterShaders.drawCustomParamsPass();
        blurred = filterShaders.drawBlurPass();
    }

    GLES20.glViewport(0, 0, surfaceWidth, surfaceHeight);
    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);

    GLES20.glUseProgram(simpleShaderProgram);
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, filterShaders.getRenderTexture(blurred ? 0 : 1));

    GLES20.glUniform1i(simpleSourceImageHandle, 0);
    GLES20.glEnableVertexAttribArray(simpleInputTexCoordHandle);
    GLES20.glVertexAttribPointer(simpleInputTexCoordHandle, 2, GLES20.GL_FLOAT, false, 8, filterShaders.getTextureBuffer());
    GLES20.glEnableVertexAttribArray(simplePositionHandle);
    GLES20.glVertexAttribPointer(simplePositionHandle, 2, GLES20.GL_FLOAT, false, 8, filterShaders.getVertexBuffer());
    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    egl10.eglSwapBuffers(eglDisplay, eglSurface);
}
 

@Override
public void onDrawFrame(GL10 unused) {
    angle = ((float) SystemClock.elapsedRealtime() - startTime) * 0.02f;
    GLES20.glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);

    Matrix.setLookAtM(mViewMatrix, 0,
            0, 0, -4,
            0f, 0f, 0f,
            0f, 1.0f, 0.0f);

    Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mViewMatrix, 0);
    Matrix.rotateM(mMVPMatrix, 0, angle, 1.f, 1.f, 1.f);

    GLES20.glUseProgram(shaderProgram);

    int positionHandle = GLES20.glGetAttribLocation(shaderProgram, "vPosition");

    GLES20.glVertexAttribPointer(positionHandle, 3,
            GLES20.GL_FLOAT, false,
            0, vertexBuffer);

    int texCoordHandle = GLES20.glGetAttribLocation(shaderProgram, "aTex");
    GLES20.glVertexAttribPointer(texCoordHandle, 2,
            GLES20.GL_FLOAT, false,
            0, texBuffer);

    int mMVPMatrixHandle = GLES20.glGetUniformLocation(shaderProgram, "uMVPMatrix");

    GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);

    int texHandle = GLES20.glGetUniformLocation(shaderProgram, "sTex");
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId);
    GLES20.glUniform1i(texHandle, 0);

    GLES20.glEnable(GLES20.GL_DEPTH_TEST);
    GLES20.glEnableVertexAttribArray(texHandle);
    GLES20.glEnableVertexAttribArray(positionHandle);
    GLES20.glDrawElements(
            GLES20.GL_TRIANGLES, index.length,
            GLES20.GL_UNSIGNED_SHORT, indexBuffer);

    GLES20.glDisableVertexAttribArray(positionHandle);
    GLES20.glDisableVertexAttribArray(texHandle);
    GLES20.glDisable(GLES20.GL_DEPTH_TEST);
}
 

/**
 * 绑定默认纹理
 */
protected void onBindTexture(int textureId){
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D,textureId);
    GLES20.glUniform1i(mGLTexture,0);
}
 

/**
 * Upload |planes| into OpenGL textures, taking stride into consideration.
 *
 * @return Array of three texture indices corresponding to Y-, U-, and V-plane respectively.
 */

public int[] uploadYuvData(int width, int height, int[] strides, ByteBuffer[] planes) {
  final int[] planeWidths = new int[] {width, width / 2, width / 2};
  final int[] planeHeights = new int[] {height, height / 2, height / 2};
  // Make a first pass to see if we need a temporary copy buffer.
  int copyCapacityNeeded = 0;
  for (int i = 0; i < 3; ++i) {
    if (strides[i] > planeWidths[i]) {
      copyCapacityNeeded = Math.max(copyCapacityNeeded, planeWidths[i] * planeHeights[i]);
    }
  }
  // Allocate copy buffer if necessary.
  if (copyCapacityNeeded > 0
      && (copyBuffer == null || copyBuffer.capacity() < copyCapacityNeeded)) {
    copyBuffer = ByteBuffer.allocateDirect(copyCapacityNeeded);
  }
  // Make sure YUV textures are allocated.
  if (yuvTextures == null) {
    yuvTextures = new int[3];
    for (int i = 0; i < 3; i++) {
      yuvTextures[i] = GlUtil.generateTexture(GLES20.GL_TEXTURE_2D);
    }
  }
  // Upload each plane.
  for (int i = 0; i < 3; ++i) {
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0 + i);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, yuvTextures[i]);
    // GLES only accepts packed data, i.e. stride == planeWidth.
    final ByteBuffer packedByteBuffer;
    if (strides[i] == planeWidths[i]) {
      // Input is packed already.
      packedByteBuffer = planes[i];
    } else {
      YuvHelper.copyPlane(
          planes[i], strides[i], copyBuffer, planeWidths[i], planeWidths[i], planeHeights[i]);
      packedByteBuffer = copyBuffer;
    }
    GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_LUMINANCE, planeWidths[i],
        planeHeights[i], 0, GLES20.GL_LUMINANCE, GLES20.GL_UNSIGNED_BYTE, packedByteBuffer);
  }
  return yuvTextures;
}
 

/**
 * Issues the draw call.  Does the full setup on every call.
 *
 * @param mvpMatrix       The 4x4 projection matrix.
 * @param vertexBuffer    Buffer with vertex position data.
 * @param firstVertex     Index of first vertex to use in vertexBuffer.
 * @param vertexCount     Number of vertices in vertexBuffer.
 * @param coordsPerVertex The number of coordinates per vertex (e.g. x,y is 2).
 * @param vertexStride    Width, in bytes, of the position data for each vertex (often
 *                        vertexCount * sizeof(float)).
 * @param texMatrix       A 4x4 transformation matrix for texture coords.  (Primarily intended
 *                        for use with SurfaceTexture.)
 * @param texBuffer       Buffer with vertex texture data.
 * @param texStride       Width, in bytes, of the texture data for each vertex.
 */
public void draw(float[] mvpMatrix, FloatBuffer vertexBuffer, int firstVertex,
                 int vertexCount, int coordsPerVertex, int vertexStride,
                 float[] texMatrix, FloatBuffer texBuffer, int textureId, int texStride) {
    GlUtil.checkGlError("draw start");

    // Select the program.
    GLES20.glUseProgram(mProgramHandle);
    GlUtil.checkGlError("glUseProgram");

    // Set the texture.
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(mTextureTarget, textureId);

    // Copy the model / view / projection matrix over.
    GLES20.glUniformMatrix4fv(muMVPMatrixLoc, 1, false, mvpMatrix, 0);
    GlUtil.checkGlError("glUniformMatrix4fv");

    // Copy the texture transformation matrix over.
    GLES20.glUniformMatrix4fv(muTexMatrixLoc, 1, false, texMatrix, 0);
    GlUtil.checkGlError("glUniformMatrix4fv");

    // Enable the "aPosition" vertex attribute.
    GLES20.glEnableVertexAttribArray(maPositionLoc);
    GlUtil.checkGlError("glEnableVertexAttribArray");

    // Connect vertexBuffer to "aPosition".
    GLES20.glVertexAttribPointer(maPositionLoc, coordsPerVertex,
            GLES20.GL_FLOAT, false, vertexStride, vertexBuffer);
    GlUtil.checkGlError("glVertexAttribPointer");

    // Enable the "aTextureCoord" vertex attribute.
    GLES20.glEnableVertexAttribArray(maTextureCoordLoc);
    GlUtil.checkGlError("glEnableVertexAttribArray");

    // Connect texBuffer to "aTextureCoord".
    GLES20.glVertexAttribPointer(maTextureCoordLoc, 2,
            GLES20.GL_FLOAT, false, texStride, texBuffer);
    GlUtil.checkGlError("glVertexAttribPointer");

    // Populate the convolution kernel, if present.
    if (muKernelLoc >= 0) {
        GLES20.glUniform1fv(muKernelLoc, KERNEL_SIZE, mKernel, 0);
        GLES20.glUniform2fv(muTexOffsetLoc, KERNEL_SIZE, mTexOffset, 0);
        GLES20.glUniform1f(muColorAdjustLoc, mColorAdjust);
    }

    // Draw the rect.
    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, firstVertex, vertexCount);
    GlUtil.checkGlError("glDrawArrays");

    // Done -- disable vertex array, texture, and program.
    GLES20.glDisableVertexAttribArray(maPositionLoc);
    GLES20.glDisableVertexAttribArray(maTextureCoordLoc);
    GLES20.glBindTexture(mTextureTarget, 0);
    GLES20.glUseProgram(0);
}