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

The following examples show how to use android.opengl.GLES20#glDrawElements() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: GLBubble.java From Android-AudioRecorder-App with Apache License 2.0

6 votes

/**
 * Draw bubble.
 */
public void draw() {
  GLES20.glUseProgram(getProgram());
  int positionHandle = GLES20.glGetAttribLocation(getProgram(), VERTEX_POSITION);
  GLES20.glEnableVertexAttribArray(positionHandle);
  GLES20.glVertexAttribPointer(positionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false,
      COORDS_PER_VERTEX * SIZE_OF_FLOAT, vertexBuffer);
  int colorHandle = GLES20.glGetUniformLocation(getProgram(), VERTEX_COLOR);
  GLES20.glEnable(GLES20.GL_BLEND);
  GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);
  GLES20.glUniform4fv(colorHandle, 1, getColor(), 0);
  GLES20.glDrawElements(GLES20.GL_TRIANGLE_FAN, shortBuffer.capacity(), GLES20.GL_UNSIGNED_SHORT,
      shortBuffer);
  GLES20.glDisableVertexAttribArray(positionHandle);
  GLES20.glDisable(GLES20.GL_BLEND);
}

Example 2

Source File: MDAbsObject3D.java From MD360Player4Android with Apache License 2.0

5 votes

public void draw() {
    // Draw
    if (getIndicesBuffer() != null){
        getIndicesBuffer().position(0);
        GLES20.glDrawElements(GLES20.GL_TRIANGLES, getNumIndices(), GLES20.GL_UNSIGNED_SHORT, getIndicesBuffer());
    } else {
        GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, getNumIndices());
    }
}

Example 3

Source File: Sphere.java From Fatigue-Detection with MIT License

5 votes

public void draw() {
    if (indexBuffer != null){
        indexBuffer.position(0);
        GLES20.glDrawElements(GLES20.GL_TRIANGLES, mNumIndices, GLES20.GL_UNSIGNED_SHORT, indexBuffer);
    } else {
        GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, mNumIndices);
    }
}

Example 4

Source File: GLImage.java From AndroidPlayground with MIT License

5 votes

public void draw(float[] matrix) {
    int positionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");
    GLES20.glEnableVertexAttribArray(positionHandle);
    GLES20.glVertexAttribPointer(positionHandle, 3, GLES20.GL_FLOAT, false, 0, vertexBuffer);

    int mTexCoordLoc = GLES20.glGetAttribLocation(mProgram, "a_texCoord");
    GLES20.glEnableVertexAttribArray(mTexCoordLoc);
    GLES20.glVertexAttribPointer(mTexCoordLoc, 2, GLES20.GL_FLOAT, false, 0, uvBuffer);

    // Get handle to shape's transformation matrix
    int mtrxhandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");

    // Apply the projection and view transformation
    GLES20.glUniformMatrix4fv(mtrxhandle, 1, false, matrix, 0);

    // Get handle to textures locations
    int mSamplerLoc = GLES20.glGetUniformLocation(mProgram, "s_texture");

    // Set the sampler texture unit to 0, where we have saved the texture.
    GLES20.glUniform1i(mSamplerLoc, 0);

    // Draw the triangle
    GLES20.glDrawElements(GLES20.GL_TRIANGLES, indices.length, GLES20.GL_UNSIGNED_SHORT,
            drawListBuffer);

    // Disable vertex array
    GLES20.glDisableVertexAttribArray(positionHandle);
    GLES20.glDisableVertexAttribArray(mTexCoordLoc);
}

Example 5

Source File: OffScreenBlurRenderer.java From HokoBlur with Apache License 2.0

5 votes

private void drawOneDimenBlur(BlurContext blurContext, boolean isHorizontal) {
    try {
        GLES20.glUseProgram(mProgram.id());

        int positionId = GLES20.glGetAttribLocation(mProgram.id(), "aPosition");
        GLES20.glEnableVertexAttribArray(positionId);
        GLES20.glVertexAttribPointer(positionId, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, VERTEX_STRIDE, mVertexBuffer);

        int texCoordId = GLES20.glGetAttribLocation(mProgram.id(), "aTexCoord");
        GLES20.glEnableVertexAttribArray(texCoordId);
        GLES20.glVertexAttribPointer(texCoordId, 2, GLES20.GL_FLOAT, false, 0, mTexCoordBuffer);

        if (isHorizontal) {
            blurContext.getBlurFrameBuffer().bindSelf();
        }

        int textureUniformId = GLES20.glGetUniformLocation(mProgram.id(), "uTexture");
        GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, isHorizontal ? blurContext.getInputTexture().id() : blurContext.getHorizontalTexture().id());
        GLES20.glUniform1i(textureUniformId, 0);

        int radiusId = GLES20.glGetUniformLocation(mProgram.id(), "uRadius");
        int widthOffsetId = GLES20.glGetUniformLocation(mProgram.id(), "uWidthOffset");
        int heightOffsetId = GLES20.glGetUniformLocation(mProgram.id(), "uHeightOffset");
        GLES20.glUniform1i(radiusId, mRadius);
        GLES20.glUniform1f(widthOffsetId, isHorizontal ? 0 : 1f / blurContext.getBitmap().getWidth());
        GLES20.glUniform1f(heightOffsetId, isHorizontal ? 1f / blurContext.getBitmap().getHeight() : 0);

        GLES20.glDrawElements(GLES20.GL_TRIANGLES, drawOrder.length, GLES20.GL_UNSIGNED_SHORT, mDrawListBuffer);

        if (!isHorizontal) {
            GLES20.glDisableVertexAttribArray(positionId);
            GLES20.glDisableVertexAttribArray(texCoordId);
        }
    } finally {
        resetAllBuffer();
    }

}

Example 6

Source File: MDAbsObject3D.java From Beginner-Level-Android-Studio-Apps with GNU General Public License v3.0

5 votes

public void draw() {
    // Draw
    if (getIndicesBuffer() != null){
        getIndicesBuffer().position(0);
        GLES20.glDrawElements(GLES20.GL_TRIANGLES, getNumIndices(), GLES20.GL_UNSIGNED_SHORT, getIndicesBuffer());
    } else {
        GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, getNumIndices());
    }
}

Example 7

Source File: GLWave.java From Android-AudioRecorder-App with Apache License 2.0

5 votes

/**
 * Draw wave.
 */
public void draw() {
  GLES20.glUseProgram(getProgram());
  int positionHandle = GLES20.glGetAttribLocation(getProgram(), VERTEX_POSITION);
  GLES20.glEnableVertexAttribArray(positionHandle);
  GLES20.glVertexAttribPointer(positionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false,
      COORDS_PER_VERTEX * SIZE_OF_FLOAT, vertexBuffer);
  int colorHandle = GLES20.glGetUniformLocation(getProgram(), VERTEX_COLOR);
  GLES20.glUniform4fv(colorHandle, 1, getColor(), 0);
  GLES20.glDrawElements(GLES20.GL_TRIANGLE_FAN, shortBuffer.capacity(), GLES20.GL_UNSIGNED_SHORT,
      shortBuffer);
  GLES20.glDisableVertexAttribArray(positionHandle);
}

Example 8

Source File: MyShader.java From poly-sample-android with Apache License 2.0

5 votes

public void render(float[] mvpMatrix, int numIndices, int ibo, int positionVbo, int colorsVbo) {
  GLES20.glUseProgram(program);

  // Set up to feed positions to shader from positions VBO.
  GLES20.glEnableVertexAttribArray(positionHandle);
  GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, positionVbo);
  GLES20.glVertexAttribPointer(positionHandle, MyGLUtils.COORDS_PER_VERTEX, GLES20.GL_FLOAT, false,
      /* stride */ 0, /* offset in positionVbo */ 0);

  // Set up to feed colors to shader from color VBO.
  GLES20.glEnableVertexAttribArray(colorHandle);
  GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, colorsVbo);
  GLES20.glVertexAttribPointer(colorHandle, MyGLUtils.NUM_COLOR_COMPONENTS, GLES20.GL_FLOAT, false,
      /* stride */ 0, /* offset in colorVbo */ 0);

  // Feed MVP matrix uniform to shader.
  GLES20.glUniformMatrix4fv(mvpMatrixHandle, 1, false, mvpMatrix, 0);

  // Bind IBO and render the triangles.
  GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, ibo);
  GLES20.glDrawElements(GLES20.GL_TRIANGLES, numIndices, GLES20.GL_UNSIGNED_SHORT,
      /* offset in ibo */ 0);
  MyGLUtils.checkGlError("render");

  // Clean up.
  GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);
  GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
  GLES20.glDisableVertexAttribArray(positionHandle);
  GLES20.glDisableVertexAttribArray(colorHandle);
  GLES20.glUseProgram(0);
}

Example 9

Source File: Square.java From opengl with Apache License 2.0

5 votes

/**
 * Encapsulates the OpenGL ES instructions for drawing this shape.
 *
 * @param mvpMatrix - The Model View Project matrix in which to draw
 * this shape.
 */
public void draw(float[] mvpMatrix) {
    // Add program to OpenGL environment
    GLES20.glUseProgram(mProgram);

    // get handle to vertex shader's vPosition member
    mPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");

    // Enable a handle to the triangle vertices
    GLES20.glEnableVertexAttribArray(mPositionHandle);

    // Prepare the triangle coordinate data
    GLES20.glVertexAttribPointer(
            mPositionHandle, COORDS_PER_VERTEX,
            GLES20.GL_FLOAT, false,
            vertexStride, vertexBuffer);

    // get handle to fragment shader's vColor member
    mColorHandle = GLES20.glGetUniformLocation(mProgram, "vColor");

    // Set color for drawing the triangle
    GLES20.glUniform4fv(mColorHandle, 1, color, 0);

    // get handle to shape's transformation matrix
    mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
    MyGLRenderer.checkGlError("glGetUniformLocation");

    // Apply the projection and view transformation
    GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mvpMatrix, 0);
    MyGLRenderer.checkGlError("glUniformMatrix4fv");

    // Draw the square
    GLES20.glDrawElements(
            GLES20.GL_TRIANGLES, drawOrder.length,
            GLES20.GL_UNSIGNED_SHORT, drawListBuffer);

    // Disable vertex array
    GLES20.glDisableVertexAttribArray(mPositionHandle);
}

Example 10

Source File: GLDrawer.java From Building-Android-UIs-with-Custom-Views with MIT License

4 votes

@Override
public void onDrawFrame(GL10 unused) {
    scroller.computeScrollOffset();
    if (scroller.isFinished()) {
        int lastX = scroller.getCurrX();
        int modulo = lastX % 90;
        int snapX = (lastX / 90) * 90;
        if (modulo >= 45) snapX += 90;
        if (modulo <- 45) snapX -= 90;

        if (lastX != snapX) {
            scroller.startScroll(lastX, 0, snapX - lastX, 0);
        }
    }

    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, -3,
            0f, 0f, 0f,
            0f, 1.0f, 0.0f);


    Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mViewMatrix, 0);
    Matrix.rotateM(mMVPMatrix, 0, scroller.getCurrX(), 0.f, 1.f, 0.f);
    Matrix.rotateM(mMVPMatrix, 0, 5.f, 1.f, 0.f, 0.f);


    GLES20.glUseProgram(shaderProgram);

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

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

    int colorHandle = GLES20.glGetAttribLocation(shaderProgram, "aColor");
    GLES20.glVertexAttribPointer(colorHandle, 4,
            GLES20.GL_FLOAT, false,
            4 * 4, colorBuffer);

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

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

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

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

Example 11

Source File: GLES20Canvas.java From TurboLauncher with Apache License 2.0

4 votes

@Override
public void drawMesh(BasicTexture texture, int x, int y, int xyBuffer, int uvBuffer,
        int indexBuffer, int indexCount) {
    prepareTexture(texture, mMeshProgram, mMeshParameters);

    GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, indexBuffer);
    checkError();

    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, xyBuffer);
    checkError();
    int positionHandle = mMeshParameters[INDEX_POSITION].handle;
    GLES20.glVertexAttribPointer(positionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false,
            VERTEX_STRIDE, 0);
    checkError();

    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, uvBuffer);
    checkError();
    int texCoordHandle = mMeshParameters[INDEX_TEXTURE_COORD].handle;
    GLES20.glVertexAttribPointer(texCoordHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT,
            false, VERTEX_STRIDE, 0);
    checkError();
    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
    checkError();

    GLES20.glEnableVertexAttribArray(positionHandle);
    checkError();
    GLES20.glEnableVertexAttribArray(texCoordHandle);
    checkError();

    setMatrix(mMeshParameters, x, y, 1, 1);
    GLES20.glDrawElements(GLES20.GL_TRIANGLE_STRIP, indexCount, GLES20.GL_UNSIGNED_BYTE, 0);
    checkError();

    GLES20.glDisableVertexAttribArray(positionHandle);
    checkError();
    GLES20.glDisableVertexAttribArray(texCoordHandle);
    checkError();
    GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);
    checkError();
    mCountDrawMesh++;
}

Example 12

Source File: VideoTextureRenderer.java From AndroidOpenGLVideoDemo with Apache License 2.0

4 votes

@Override
protected boolean draw()
{
    synchronized (this)
    {
        if (frameAvailable)
        {
            videoTexture.updateTexImage();
            videoTexture.getTransformMatrix(videoTextureTransform);
            frameAvailable = false;
        }
        else
        {
            return false;
        }

    }

    if (adjustViewport)
        adjustViewport();

    GLES20.glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);

    // Draw texture
    GLES20.glUseProgram(shaderProgram);
    int textureParamHandle = GLES20.glGetUniformLocation(shaderProgram, "texture");
    int textureCoordinateHandle = GLES20.glGetAttribLocation(shaderProgram, "vTexCoordinate");
    int positionHandle = GLES20.glGetAttribLocation(shaderProgram, "vPosition");
    int textureTranformHandle = GLES20.glGetUniformLocation(shaderProgram, "textureTransform");

    GLES20.glEnableVertexAttribArray(positionHandle);
    GLES20.glVertexAttribPointer(positionHandle, 3, GLES20.GL_FLOAT, false, 4 * 3, vertexBuffer);

    GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, textures[0]);
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glUniform1i(textureParamHandle, 0);

    GLES20.glEnableVertexAttribArray(textureCoordinateHandle);
    GLES20.glVertexAttribPointer(textureCoordinateHandle, 4, GLES20.GL_FLOAT, false, 0, textureBuffer);

    GLES20.glUniformMatrix4fv(textureTranformHandle, 1, false, videoTextureTransform, 0);

    GLES20.glDrawElements(GLES20.GL_TRIANGLES, DRAW_ORDER.length, GLES20.GL_UNSIGNED_SHORT, drawListBuffer);
    GLES20.glDisableVertexAttribArray(positionHandle);
    GLES20.glDisableVertexAttribArray(textureCoordinateHandle);

    return true;
}

Example 13

Source File: GLES20Canvas.java From LB-Launcher with Apache License 2.0

4 votes

@Override
public void drawMesh(BasicTexture texture, int x, int y, int xyBuffer, int uvBuffer,
        int indexBuffer, int indexCount) {
    prepareTexture(texture, mMeshProgram, mMeshParameters);

    GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, indexBuffer);
    checkError();

    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, xyBuffer);
    checkError();
    int positionHandle = mMeshParameters[INDEX_POSITION].handle;
    GLES20.glVertexAttribPointer(positionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false,
            VERTEX_STRIDE, 0);
    checkError();

    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, uvBuffer);
    checkError();
    int texCoordHandle = mMeshParameters[INDEX_TEXTURE_COORD].handle;
    GLES20.glVertexAttribPointer(texCoordHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT,
            false, VERTEX_STRIDE, 0);
    checkError();
    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
    checkError();

    GLES20.glEnableVertexAttribArray(positionHandle);
    checkError();
    GLES20.glEnableVertexAttribArray(texCoordHandle);
    checkError();

    setMatrix(mMeshParameters, x, y, 1, 1);
    GLES20.glDrawElements(GLES20.GL_TRIANGLE_STRIP, indexCount, GLES20.GL_UNSIGNED_BYTE, 0);
    checkError();

    GLES20.glDisableVertexAttribArray(positionHandle);
    checkError();
    GLES20.glDisableVertexAttribArray(texCoordHandle);
    checkError();
    GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);
    checkError();
    mCountDrawMesh++;
}

Example 14

Source File: InvertedColorsVideoRenderer.java From opentok-android-sdk-samples with MIT License

4 votes

@Override
public void onDrawFrame(GL10 gl) {
    gl.glClearColor(0, 0, 0, 1);
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);

    mFrameLock.lock();
    if (mCurrentFrame != null && !mVideoDisabled) {
        GLES20.glUseProgram(mProgram);

        if (mTextureWidth != mCurrentFrame.getWidth()
                || mTextureHeight != mCurrentFrame.getHeight()) {
            setupTextures(mCurrentFrame);
        }
        updateTextures(mCurrentFrame);

        Matrix.setIdentityM(mScaleMatrix, 0);
        float scaleX = 1.0f, scaleY = 1.0f;
        float ratio = (float) mCurrentFrame.getWidth()
                / mCurrentFrame.getHeight();
        float vratio = (float) mViewportWidth / mViewportHeight;

        if (mVideoFitEnabled) {
            if (ratio > vratio) {
                scaleY = vratio / ratio;
            } else {
                scaleX = ratio / vratio;
            }
        } else {
            if (ratio < vratio) {
                scaleY = vratio / ratio;
            } else {
                scaleX = ratio / vratio;
            }
        }

       Matrix.scaleM(mScaleMatrix, 0,
                scaleX * (mCurrentFrame.isMirroredX() ? -1.0f : 1.0f),
                scaleY, 1);

        if (metadataListener != null) {
            metadataListener.onMetadataReady(mCurrentFrame.getMetadata());
        }

        int mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram,
                "uMVPMatrix");
        GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false,
                mScaleMatrix, 0);

        GLES20.glDrawElements(GLES20.GL_TRIANGLES, mVertexIndex.length,
                GLES20.GL_UNSIGNED_SHORT, mDrawListBuffer);
    } else {
        //black frame when video is disabled
        gl.glClearColor(0, 0, 0, 1);
        GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
    }
    mFrameLock.unlock();
}

Example 15

Source File: Quad.java From ShapesInOpenGLES2.0 with MIT License

4 votes

/**
     * draws Quad shape object.
     * @param aMVPMatrix
     * @param texture
     */
    public void render(float[] aMVPMatrix, final int texture) {
//        // Use culling to remove back faces.
        GLES20.glDisable(GLES20.GL_CULL_FACE);

        // Set our per-vertex lighting program.
        GLES20.glUseProgram(aQuadProgramHandle);

        // Set program handles for cube drawing.
        aMVPMatrixHandle = GLES20.glGetUniformLocation(aQuadProgramHandle, "u_MVPMatrix");
        aPositionHandle = GLES20.glGetAttribLocation(aQuadProgramHandle, "a_Position");
        aColorHandle = GLES20.glGetAttribLocation(aQuadProgramHandle, "a_Color");
        aTextureCoordinateHandle = GLES20.glGetAttribLocation(aQuadProgramHandle, "a_TexCoordinate");
        aTextureUniformHandle = GLES20.glGetUniformLocation(aQuadProgramHandle, "u_Texture");

        // Pass in the combined matrix.
        GLES20.glUniformMatrix4fv(aMVPMatrixHandle, 1, false, aMVPMatrix, 0);

        if (qvbo[0] > 0 && qibo[0] > 0) {
            GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, qvbo[0]);

            // Bind Attributes
            GLES20.glVertexAttribPointer(aPositionHandle, POSITION_DATA_SIZE, GLES20.GL_FLOAT, false,
                    STRIDE, 0);
            GLES20.glEnableVertexAttribArray(aPositionHandle);

            GLES20.glVertexAttribPointer(aColorHandle, COLOR_DATA_SIZE, GLES20.GL_FLOAT, false,
                    STRIDE, (POSITION_DATA_SIZE) * BYTES_PER_FLOAT);
            GLES20.glEnableVertexAttribArray(aColorHandle);

            GLES20.glVertexAttribPointer(aTextureCoordinateHandle, UV_DATA_SIZE, GLES20.GL_FLOAT, false,
                    STRIDE, (POSITION_DATA_SIZE + COLOR_DATA_SIZE) * BYTES_PER_FLOAT);
            GLES20.glEnableVertexAttribArray(aTextureCoordinateHandle);

            GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
            GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texture);
            GLES20.glUniform1f(aTextureUniformHandle, 0);

            // Draw
            GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, qibo[0]);
            GLES20.glDrawElements(GLES20.GL_TRIANGLE_STRIP, indexCount, GLES20.GL_UNSIGNED_SHORT, 0);

            GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
            GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);
        }

//        // Use culling to remove back faces.
//        GLES20.glEnable(GLES20.GL_CULL_FACE);
    }

Example 16

Source File: PointsMatrix.java From MegviiFacepp-Android-SDK with Apache License 2.0

4 votes

public void draw(float[] mvpMatrix) {
		// Add program to OpenGL environment
		GLES20.glUseProgram(mProgram);

		// get handle to vertex shader's vPosition member
		mPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");

		// get handle to fragment shader's vColor member
		mColorHandle = GLES20.glGetUniformLocation(mProgram, "vColor");

		// get handle to shape's transformation matrix
		mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
		checkGlError("glGetUniformLocation");

		// Apply the projection and view transformation
		GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mvpMatrix, 0);
		checkGlError("glUniformMatrix4fv");
		// Enable a handle to the triangle vertices
		GLES20.glEnableVertexAttribArray(mPositionHandle);
		// Set color for drawing the triangle
		GLES20.glUniform4fv(mColorHandle, 1, color_rect, 0);

		synchronized (this) {
			for (int i = 0; i < vertexBuffers.size(); i++) {
				FloatBuffer vertexBuffer = vertexBuffers.get(i);
				if (vertexBuffer != null) {
					// Prepare the triangle coordinate data
					GLES20.glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false,
							vertexStride, vertexBuffer);
					// Draw the square

					GLES20.glDrawElements(GLES20.GL_TRIANGLES, drawOrder.length, GLES20.GL_UNSIGNED_SHORT,
							drawListBuffer);
				}
			}
		}

		GLES20.glUniform4fv(mColorHandle, 1, color, 0);

		if (!isFaceCompare&&!isShowFaceRect){    //这里在绘制判断，需要调用api判断
			synchronized (this) {
				for (int i = 0; i < points.size(); i++) {
					ArrayList<FloatBuffer> triangleVBList = points.get(i);
					for (int j = 0; j < triangleVBList.size(); j++) {
						FloatBuffer fb = triangleVBList.get(j);
						if (fb != null) {
							GLES20.glVertexAttribPointer(mPositionHandle, 3, GLES20.GL_FLOAT, false, 0, fb);
							// Draw the point
							GLES20.glDrawArrays(GLES20.GL_POINTS, 0, 1);
						}
					}
				}
			}
		}


		synchronized (this) {
			if (bottomVertexBuffer != null) {
				GLES20.glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, vertexStride,
						bottomVertexBuffer);
//				GLES20.glUniform4fv(mColorHandle, 1, color_megvii[1], 0);
//				GLES20.glDrawElements(GLES20.GL_TRIANGLES, drawOrder.length, GLES20.GL_UNSIGNED_SHORT,
//						drawListBuffer);
//				GLES20.glUniform4fv(mColorHandle, 1, color_megvii[0], 0);
//				GLES20.glDrawElements(GLES20.GL_LINES, drawLineOrder.length, GLES20.GL_UNSIGNED_SHORT,
//						drawLineListBuffer);
				// Draw the square
				GLES20.glLineWidth(4.0f);
				for (int i = 0; i < cubeOrders.length; ++i) {
					GLES20.glUniform4fv(mColorHandle, 1, color_megvii[i + 2], 0);
					GLES20.glDrawElements(GLES20.GL_LINES, cubeOrders[i].length, GLES20.GL_UNSIGNED_SHORT,
							cubeListBuffer[i]);
				}
			}
		}


		synchronized (this){
			if (faceRects != null && faceRects.size()>0){
				GLES20.glLineWidth(4.0f);
				GLES20.glUniform4f(mColorHandle, 1.0f, 0.0f, 0.0f, 1.0f);

				for(int i = 0; i < faceRects.size(); i++){
					FloatBuffer buffer = faceRects.get(i);
					GLES20.glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, 0, buffer);
					GLES20.glDrawElements(GLES20.GL_LINES, drawFaceRectOrder.length, GLES20.GL_UNSIGNED_SHORT, faceRectListBuffer);

				}
			}
		}



			// Disable vertex array
		GLES20.glDisableVertexAttribArray(mPositionHandle);
	}

Example 17

Source File: GLES20Canvas.java From PhotoMovie with Apache License 2.0

4 votes

@Override
public void drawMesh(BasicTexture texture, int x, int y, int xyBuffer, int uvBuffer,
                     int indexBuffer, int indexCount) {
    prepareTexture(texture, mMeshProgram, mMeshParameters);

    GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, indexBuffer);
    checkError();

    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, xyBuffer);
    checkError();
    int positionHandle = mMeshParameters[INDEX_POSITION].handle;
    GLES20.glVertexAttribPointer(positionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false,
            VERTEX_STRIDE, 0);
    checkError();

    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, uvBuffer);
    checkError();
    int texCoordHandle = mMeshParameters[INDEX_TEXTURE_COORD].handle;
    GLES20.glVertexAttribPointer(texCoordHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT,
            false, VERTEX_STRIDE, 0);
    checkError();
    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
    checkError();

    GLES20.glEnableVertexAttribArray(positionHandle);
    checkError();
    GLES20.glEnableVertexAttribArray(texCoordHandle);
    checkError();

    setMatrix(mMeshParameters, x, y, 1, 1);
    GLES20.glDrawElements(GLES20.GL_TRIANGLE_STRIP, indexCount, GLES20.GL_UNSIGNED_BYTE, 0);
    checkError();

    GLES20.glDisableVertexAttribArray(positionHandle);
    checkError();
    GLES20.glDisableVertexAttribArray(texCoordHandle);
    checkError();
    GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);
    checkError();
    mCountDrawMesh++;
}

Example 18

Source File: CameraMatrix.java From MegviiFacepp-Android-SDK with Apache License 2.0

4 votes

/**
	 * 绘制：
	 *
	 * 我们在 onDrawFrame 回调中执行绘制操作，绘制的过程其实就是为 shader 代码变量赋值，并调用绘制命令的过程：
	 */
	public void draw(float[] mtx) {
		// to program
		GLES20.glUseProgram(mProgram);

		GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
		GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, mTextureID);
		// get handle to vertex shader's vPosition member
		// (顶点着色器的vPosition成员得到处理)
		int mPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");

		// Enable a handle to the triangle vertices(使一个句柄三角形顶点)
		GLES20.glEnableVertexAttribArray(mPositionHandle);

		// Prepare the <insert shape here> coordinate data (准备<插入形状这里>坐标数据)
		GLES20.glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX,
				GLES20.GL_FLOAT, false, vertexStride, vertexBuffer);

		int mTextureCoordHandle = GLES20.glGetAttribLocation(mProgram,
				"inputTextureCoordinate");
		GLES20.glEnableVertexAttribArray(mTextureCoordHandle);

		//照相机镜像
		textureVerticesBuffer.clear();
		textureVerticesBuffer.put(transformTextureCoordinates(textureVertices,
				mtx));
		textureVerticesBuffer.position(0);

		GLES20.glVertexAttribPointer(mTextureCoordHandle, COORDS_PER_VERTEX,
				GLES20.GL_FLOAT, false, vertexStride, textureVerticesBuffer);
		GLES20.glDrawElements(GLES20.GL_TRIANGLES, drawOrder.length,
				GLES20.GL_UNSIGNED_SHORT, drawListBuffer);

//		for (int i = 0; i < points.size(); i++) {
//			ArrayList<FloatBuffer> triangleVBList = points.get(i);
//			for (int j = 0; j < triangleVBList.size(); j++) {
//				FloatBuffer fb = triangleVBList.get(j);
//				GLES20.glVertexAttribPointer(mPositionHandle, 3,
//						GLES20.GL_FLOAT, false, 0, fb);
//				GLES20.glEnableVertexAttribArray(mPositionHandle);
//				// Draw the point
//				GLES20.glDrawArrays(GLES20.GL_POINTS, 0, 1);
//			}
//		}

		// Disable vertex array
		GLES20.glDisableVertexAttribArray(mPositionHandle);
		GLES20.glDisableVertexAttribArray(mTextureCoordHandle);
	}

Example 19

Source File: AnchorRenderer.java From justaline-android with Apache License 2.0

4 votes

/**
 * Encapsulates the OpenGL ES instructions for drawing this shape.
 */
public void draw(float[] cameraView, float[] cameraPerspective, boolean changeColor) {

    Matrix.multiplyMM(mModelViewMatrix, 0, cameraView, 0, mModelMatrix, 0);
    Matrix.multiplyMM(mModelViewProjectionMatrix, 0, cameraPerspective, 0, mModelViewMatrix, 0);
    Matrix.scaleM(mModelViewProjectionMatrix, 0, 0.005f, 0.005f, 0.005f);

    if (mProgram != 0) {
        // Add program to OpenGL environment
        GLES20.glUseProgram(mProgram);

        // Get handle to vertex shader's vPosition member
        int mPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");

        // Enable a handle to the triangle vertices
        GLES20.glEnableVertexAttribArray(mPositionHandle);

        // Get handle to fragment shader's vColor member
        int mColor = GLES20.glGetAttribLocation(mProgram, "vColor");

        // Enable a handle to the color vertices
        GLES20.glEnableVertexAttribArray(mColor);

        // Get handle to shape's transformation matrix
        int mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
        checkGlError("glGetUniformLocation");

        // Apply the projection and view transformation
        GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mModelViewProjectionMatrix, 0);
        checkGlError("glUniformMatrix4fv");

        // Prepare the coordinate data
        GLES20.glVertexAttribPointer(
                mPositionHandle, COORDS_PER_VERTEX,
                GLES20.GL_FLOAT, false,
                VERTEX_STRIDE, mVertexBuffer);

        // Prepare the color data
        if (changeColor) {
            GLES20.glVertexAttribPointer(
                    mColor, COORDS_PER_COLORS,
                    GLES20.GL_FLOAT, false,
                    COLORS_STRIDE, mColor2Buffer);
        } else {
            GLES20.glVertexAttribPointer(
                    mColor, COORDS_PER_COLORS,
                    GLES20.GL_FLOAT, false,
                    COLORS_STRIDE, mColor1Buffer);
        }

        // Draw the shape
        GLES20.glDrawElements(
                GLES20.GL_TRIANGLES, INDICES.length,
                GLES20.GL_UNSIGNED_SHORT, mIndexBuffer);

        // Disable vertex array
        GLES20.glDisableVertexAttribArray(mPositionHandle);
        // Disable color array
        GLES20.glDisableVertexAttribArray(mColor);
    } else {
        Log.i(TAG, "Bummer");
    }
}

Example 20

Source File: NoosaScript.java From remixed-dungeon with GNU General Public License v3.0

3 votes

public void drawQuad( FloatBuffer vertices ) {

		if(vertices.limit()<16){
			throw new AssertionError();
		}

		vertices.position( 0 );
		aXY.vertexPointer( 2, 4, vertices );
		
		vertices.position( 2 );
		aUV.vertexPointer( 2, 4, vertices );

		GLES20.glDrawElements( GLES20.GL_TRIANGLES, Quad.SIZE, GLES20.GL_UNSIGNED_SHORT, Quad.getIndices( 1 ) );
		
	}