public void drawSelf() {
MatrixState.rotate(xAngle, 1, 0, 0); // 绕X轴转动
MatrixState.rotate(yAngle, 0, 1, 0); // 绕Y轴转动
MatrixState.rotate(zAngle, 0, 0, 1); // 绕Z轴转动
// 制定使用某套着色器程序
GLES20.glUseProgram(mProgram);
// 将最终变换矩阵传入着色器程序
GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, MatrixState.getFinalMatrix(), 0);
// 将位置、旋转变换矩阵传入着色器程序
GLES20.glUniformMatrix4fv(muMMatrixHandle, 1, false, MatrixState.getMMatrix(), 0);
// 将光源位置传入着色器程序
GLES20.glUniform3fv(maLightLocationHandle, 1, MatrixState.lightPositionFB);
// 将摄像机位置传入着色器程序
GLES20.glUniform3fv(maCameraHandle, 1, MatrixState.cameraFB);
// 将顶点经纬度数据传入渲染管线
GLES20.glVertexAttribPointer(maLongLatHandle, 2, GLES20.GL_FLOAT, false, 2 * 4, mLongLatBuffer);
// 将顶点位置数据传入渲染管线
GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false, 3 * 4, mVertexBuffer);
// 将顶点法向量数据传入渲染管线
GLES20.glVertexAttribPointer(maNormalHandle, 3, GLES20.GL_FLOAT, false, 3 * 4, mNormalBuffer);
// 启用顶点位置、顶点经纬度数据
GLES20.glEnableVertexAttribArray(maPositionHandle);
GLES20.glEnableVertexAttribArray(maNormalHandle); // 启用顶点法向量数据
GLES20.glEnableVertexAttribArray(maLongLatHandle);
// 绘制球
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vCount);
}
/**
* Method for painting any given object. Data must be 7 floats per face – we render one triangle
* consisting of 3 vertices with each vertice having an rgba color float value.
*
* @param data The vertice data containing coordinates and colors to draw.
*/
private void drawObject(final FloatBuffer data) {
// Pass in the position information
data.position(mPositionOffset);
GLES20.glVertexAttribPointer(
mPositionHandle, mPositionDataSize, GLES20.GL_FLOAT, false, mStrideBytes, data);
GLES20.glEnableVertexAttribArray(mPositionHandle);
// Pass in the color information
data.position(mColorOffset);
GLES20.glVertexAttribPointer(
mColorHandle, mColorDataSize, GLES20.GL_FLOAT, false, mStrideBytes, data);
GLES20.glEnableVertexAttribArray(mColorHandle);
// This multiplies the view matrix by the model matrix, and stores the result in the MVP matrix
// (which currently contains model * view).
Matrix.multiplyMM(mMVPMatrix, 0, mViewMatrix, 0, mModelMatrix, 0);
// This multiplies the modelview matrix by the projection matrix, and stores the result in the
// MVP matrix
// (which now contains model * view * projection).
Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);
// The (1+data.capacity() / 8) tells us how many vertices we need to
// draw
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, (1 + data.capacity() / 8));
}
void draw(Model m) {
GLES20.glEnable(GLES20.GL_DEPTH_TEST);
int oldProgram = GLES20.GL_CURRENT_PROGRAM;
GLES20.glUseProgram(program);
GLES20.glEnableVertexAttribArray(aVertexHandle);
GLES20.glEnableVertexAttribArray(aNormalHandle);
GLES20.glVertexAttribPointer(aVertexHandle, 3, GLES20.GL_FLOAT, false, 0, m.vertexBuffer);
GLES20.glVertexAttribPointer(aNormalHandle, 3, GLES20.GL_FLOAT, false, 0, m.normalBuffer);
float[] modelViewMatrix = new float[16];
Matrix.multiplyMM(modelViewMatrix, 0, modelMatrix, 0, viewMatrix, 0);
GLES20.glUniformMatrix4fv(uMVMatrixHandle, 1, false, modelViewMatrix, 0);
GLES20.glUniformMatrix4fv(uPMatrixHandle, 1, false, projectionMatrix, 0);
// GLES20.glDrawArrays(mode, first, count)
// if(m.indexBuffer != null)
GLES20.glDrawElements(
GLES20.GL_TRIANGLES, m.num_indices, GLES20.GL_UNSIGNED_SHORT, m.indexBuffer);
// else
// GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, m.num_indices);
GLES20.glDisableVertexAttribArray(aNormalHandle);
GLES20.glDisableVertexAttribArray(aVertexHandle);
GLES20.glUseProgram(oldProgram);
}
/**
* Draws a frame for an eye. The transformation for that eye (from the camera) is passed in as a
* parameter.
*
* @param transform The transformations to apply to render this eye.
*/
@Override
public void onDrawEye(EyeTransform transform) {
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);
GLES20.glUseProgram(mProgram);
GLES20.glActiveTexture(GL_TEXTURE_EXTERNAL_OES);
GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture);
mPositionHandle = GLES20.glGetAttribLocation(mProgram, "position");
GLES20.glEnableVertexAttribArray(mPositionHandle);
GLES20.glVertexAttribPointer(
mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, vertexStride, vertexBuffer);
mTextureCoordHandle = GLES20.glGetAttribLocation(mProgram, "inputTextureCoordinate");
GLES20.glEnableVertexAttribArray(mTextureCoordHandle);
GLES20.glVertexAttribPointer(
mTextureCoordHandle,
COORDS_PER_VERTEX,
GLES20.GL_FLOAT,
false,
vertexStride,
textureVerticesBuffer);
GLES20.glDrawElements(
GLES20.GL_TRIANGLES, drawOrder.length, GLES20.GL_UNSIGNED_SHORT, drawListBuffer);
// Disable vertex array
GLES20.glDisableVertexAttribArray(mPositionHandle);
GLES20.glDisableVertexAttribArray(mTextureCoordHandle);
Matrix.multiplyMM(mView, 0, transform.getEyeView(), 0, mCamera, 0);
}
public static void bindPillowTexture(int color, int state, int deathTimeCounter, int direction) {
if (state == ALIVE || state == BORNING) {
if (direction == DIR_LEFT)
GLES20.glVertexAttribPointer(
Render.maTexCoordsHandle, 2, GLES20.GL_FLOAT, false, 8, Render.rect1TexCoordsBuf);
else if (direction == DIR_UP)
GLES20.glVertexAttribPointer(
Render.maTexCoordsHandle, 2, GLES20.GL_FLOAT, false, 8, Render.rect2TexCoordsBuf);
else if (direction == DIR_RIGHT)
GLES20.glVertexAttribPointer(
Render.maTexCoordsHandle, 2, GLES20.GL_FLOAT, false, 8, Render.rect3TexCoordsBuf);
else if (direction == DIR_DOWN)
GLES20.glVertexAttribPointer(
Render.maTexCoordsHandle, 2, GLES20.GL_FLOAT, false, 8, Render.rect4TexCoordsBuf);
//
if (color == COLOR_GREY) {
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, Render.charGreyTexID);
} else if (color == COLOR_RED) {
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, Render.charRedTexID);
}
} else {
findDyingTexture(direction, color, deathTimeCounter);
}
Render.quadTCBinded = false;
}
public void drawSelf(int texId) {
// 制定使用某套shader程序
GLES20.glUseProgram(mProgram);
// 将最终变换矩阵传入shader程序
GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, MatrixState.getFinalMatrix(), 0);
// 将位置、旋转变换矩阵传入shader程序
GLES20.glUniformMatrix4fv(muMMatrixHandle, 1, false, MatrixState.getMMatrix(), 0);
// 将摄像机位置传入shader程序
GLES20.glUniform3fv(maCameraHandle, 1, MatrixState.cameraFB);
// 将光源位置传入shader程序
GLES20.glUniform3fv(maLightLocationHandle, 1, MatrixState.lightPositionFB);
// 传送顶点位置数据
GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false, 3 * 4, mVertexBuffer);
// 传送顶点纹理坐标数据
GLES20.glVertexAttribPointer(maTexCoorHandle, 2, GLES20.GL_FLOAT, false, 2 * 4, mTexCoorBuffer);
// 传送顶点法向量数据
GLES20.glVertexAttribPointer(maNormalHandle, 4, GLES20.GL_FLOAT, false, 3 * 4, mNormalBuffer);
// 启用顶点位置数据
GLES20.glEnableVertexAttribArray(maPositionHandle);
// 启用顶点纹理数据
GLES20.glEnableVertexAttribArray(maTexCoorHandle);
// 启用顶点法向量数据
GLES20.glEnableVertexAttribArray(maNormalHandle);
// 绑定纹理
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texId);
// 绘制纹理矩形
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vCount);
}
public void onDraw(
final int textureId, final FloatBuffer cubeBuffer, final FloatBuffer textureBuffer) {
GLES20.glUseProgram(mGLProgId);
runPendingOnDrawTasks();
if (!mIsInitialized) {
return;
}
cubeBuffer.position(0);
GLES20.glVertexAttribPointer(mGLAttribPosition, 2, GLES20.GL_FLOAT, false, 0, cubeBuffer);
GLES20.glEnableVertexAttribArray(mGLAttribPosition);
textureBuffer.position(0);
GLES20.glVertexAttribPointer(
mGLAttribTextureCoordinate, 2, GLES20.GL_FLOAT, false, 0, textureBuffer);
GLES20.glEnableVertexAttribArray(mGLAttribTextureCoordinate);
if (textureId != OpenGlUtils.NO_TEXTURE) {
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId);
GLES20.glUniform1i(mGLUniformTexture, 0);
}
onDrawArraysPre();
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
GLES20.glDisableVertexAttribArray(mGLAttribPosition);
GLES20.glDisableVertexAttribArray(mGLAttribTextureCoordinate);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
}
public void onSurfaceChanged(GL10 unused, int width, int height) {
GLES20.glViewport(0, 0, width, height);
ratio = (float) width / height;
// this projection matrix is applied to object coodinates
// in the onDrawFrame() method
Matrix.orthoM(mProjMatrix, 0, -ratio, ratio, -1, 1, 3, 7);
muMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
Matrix.setLookAtM(mVMatrix, 0, 0, 0, 3, 0f, 0f, 0f, 0f, 1.0f, 0.0f);
engine.initGL();
GLES20.glUseProgram(mProgram);
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
GLES20.glUniform1i(mSampleHandle, 0);
GLES20.glUniform1f(mOpacityHandle, 1f);
GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false, 12, quadCoordsBuf);
GLES20.glEnableVertexAttribArray(maPositionHandle);
GLES20.glVertexAttribPointer(maTexCoordsHandle, 2, GLES20.GL_FLOAT, false, 8, quadTexCoordsBuf);
GLES20.glEnableVertexAttribArray(maTexCoordsHandle);
initTextures();
}
@Override
public void draw(GL10 glUnused) {
super.draw(glUnused);
GLES20.glDisable(GLES20.GL_CULL_FACE);
calcMVP();
GLES20.glUniformMatrix4fv(getUniform(ShaderVal.MVP_MATRIX), 1, false, MVP, 0);
GLES20.glEnableVertexAttribArray(ShaderVal.POSITION.loc);
GLES20.glVertexAttribPointer(ShaderVal.POSITION.loc, 3, GLES20.GL_FLOAT, false, 0, vertices);
if (useVertexColors) {
GLES20.glEnableVertexAttribArray(ShaderVal.ATTRIB_COLOR.loc);
GLES20.glVertexAttribPointer(
ShaderVal.ATTRIB_COLOR.loc, 4, GLES20.GL_FLOAT, false, 0, colors);
} else {
GLES20.glUniform4f(
getUniform(ShaderVal.UNIFORM_COLOR),
color.getRed(),
color.getGreen(),
color.getBlue(),
color.getAlpha());
}
GLES20.glDrawArrays(drawMode, 0, vertexCount);
GLES20.glEnable(GLES20.GL_CULL_FACE);
}
/** Constructor this should be called in GL context */
public GLDrawer2D() {
pVertex =
ByteBuffer.allocateDirect(VERTEX_SZ * FLOAT_SZ)
.order(ByteOrder.nativeOrder())
.asFloatBuffer();
pVertex.put(VERTICES);
pVertex.flip();
pTexCoord =
ByteBuffer.allocateDirect(VERTEX_SZ * FLOAT_SZ)
.order(ByteOrder.nativeOrder())
.asFloatBuffer();
pTexCoord.put(TEXCOORD);
pTexCoord.flip();
hProgram = loadShader(vss, fss);
GLES20.glUseProgram(hProgram);
maPositionLoc = GLES20.glGetAttribLocation(hProgram, "aPosition");
maTextureCoordLoc = GLES20.glGetAttribLocation(hProgram, "aTextureCoord");
muMVPMatrixLoc = GLES20.glGetUniformLocation(hProgram, "uMVPMatrix");
muTexMatrixLoc = GLES20.glGetUniformLocation(hProgram, "uTexMatrix");
Matrix.setIdentityM(mMvpMatrix, 0);
GLES20.glUniformMatrix4fv(muMVPMatrixLoc, 1, false, mMvpMatrix, 0);
GLES20.glUniformMatrix4fv(muTexMatrixLoc, 1, false, mMvpMatrix, 0);
GLES20.glVertexAttribPointer(maPositionLoc, 2, GLES20.GL_FLOAT, false, VERTEX_SZ, pVertex);
GLES20.glVertexAttribPointer(
maTextureCoordLoc, 2, GLES20.GL_FLOAT, false, VERTEX_SZ, pTexCoord);
GLES20.glEnableVertexAttribArray(maPositionLoc);
GLES20.glEnableVertexAttribArray(maTextureCoordLoc);
}
public void drawCube() {
GLES20.glUseProgram(cubeProgram);
checkGLError("Use program");
GLES20.glUniform3fv(cubeLightPosParam, 1, lightPosInEyeSpace, 0);
// Set the Model in the shader, used to calculate lighting
GLES20.glUniformMatrix4fv(cubeModelParam, 1, false, mModelCube, 0);
// Set the ModelView in the shader, used to calculate lighting
GLES20.glUniformMatrix4fv(cubeModelViewParam, 1, false, modelView, 0);
// Set the position of the cube
GLES20.glVertexAttribPointer(
cubePositionParam, COORDS_PER_VERTEX_CUBE, GLES20.GL_FLOAT, false, 0, cubeVertices);
// Set the ModelViewProjection matrix in the shader.
GLES20.glUniformMatrix4fv(cubeModelViewProjectionParam, 1, false, modelViewProjection, 0);
// Set the normal positions of the cube, again for shading
GLES20.glVertexAttribPointer(cubeNormalParam, 3, GLES20.GL_FLOAT, false, 0, cubeNormals);
GLES20.glVertexAttribPointer(cubeColorParam, 4, GLES20.GL_FLOAT, false, 0, cubeColors);
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, 36);
checkGLError("Drawing cube");
}
public void drawSelf(int texId) {
MatrixState.rotate(xAngle, 1, 0, 0);
MatrixState.rotate(yAngle, 0, 1, 0);
MatrixState.rotate(zAngle, 0, 0, 1);
// 制定使用某套shader程序
GLES20.glUseProgram(mProgram);
// 将最终变换矩阵传入shader程序
GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, MatrixState.getFinalMatrix(), 0);
// 传送顶点位置数据
GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false, 3 * 4, mVertexBuffer);
// 传送顶点纹理坐标数据
GLES20.glVertexAttribPointer(maTexCoorHandle, 2, GLES20.GL_FLOAT, false, 2 * 4, mTexCoorBuffer);
// 启用顶点位置数据
GLES20.glEnableVertexAttribArray(maPositionHandle);
// 启用顶点纹理数据
GLES20.glEnableVertexAttribArray(maTexCoorHandle);
// 绑定纹理
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texId);
// 绘制纹理矩形
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vCount);
}
public void draw(final int mShader) {
// Bind Texture VBO
GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, getTexVBO());
// Pass in texture map position
mTexVertBuffer.position(0);
final int mTextureCoordinateHandle = GLES20.glGetAttribLocation(mShader, "a_TexCoord");
GLES20.glVertexAttribPointer(
mTextureCoordinateHandle, mPositionDataSize, GLES20.GL_FLOAT, false, 0, 0);
GLES20.glEnableVertexAttribArray(mTextureCoordinateHandle);
// Bind VBO
GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, getPlaneVBO());
// Pass in the position information
mPlaneVertBuffer.position(0);
final int mPositionHandle = GLES20.glGetAttribLocation(mShader, "a_Position");
GLES20.glVertexAttribPointer(mPositionHandle, mPositionDataSize, GLES20.GL_FLOAT, false, 0, 0);
GLES20.glEnableVertexAttribArray(mPositionHandle);
// Pass in the color information
final int mColorHandle = GLES20.glGetUniformLocation(mShader, "u_Color");
GLES20.glUniform4f(mColorHandle, 0, 1, 1, 1);
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, indexCount);
// Unbind buffers
GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);
}
public void draw() {
// Bind the array buffer using the handle we generated for the vertex buffer earlier,
// to tell the graphics card which buffer we're talking about when we issue the next few
// commands
GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, this.mBufferHandles[0]);
// Tell the graphics card how position data is stored in our vertex buffer, so the shader knows
// where to get the data for the "position" attribute value in the shader
GLES20.glEnableVertexAttribArray(GLES20Shader.ATTRIB_POSITION);
GLES20.glVertexAttribPointer(GLES20Shader.ATTRIB_POSITION, 3, GLES20.GL_FLOAT, false, 8 * 4, 0);
// Tell the graphics card how normal data is stored in our vertex buffer, so the shader knows
// where to get the data for the "normal" attribute value in the shader
GLES20.glEnableVertexAttribArray(GLES20Shader.ATTRIB_NORMAL);
GLES20.glVertexAttribPointer(GLES20Shader.ATTRIB_NORMAL, 3, GLES20.GL_FLOAT, false, 8 * 4, 12);
GLES20.glEnableVertexAttribArray(GLES20Shader.ATTRIB_TEXCOORD);
GLES20.glVertexAttribPointer(
GLES20Shader.ATTRIB_TEXCOORD, 2, GLES20.GL_FLOAT, false, 8 * 4, 24);
// Bind the element buffer using the handle we generated for the element buffer earlier,
// to tell the graphics card which buffer we're talking about when we issue the next few
// commands
GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, this.mBufferHandles[1]);
// Issue a command to the graphics card, telling it to draw triangles using the provided data,
// of which
// there are mElements.capacity() total vertices, with the element data provided as unsigned
// ints (4 bytes
// per element value), and starting at offset 0 into the bound element array buffer
GLES20.glDrawElements(
GLES20.GL_TRIANGLES, this.mElements.capacity(), GLES20.GL_UNSIGNED_INT, 0);
}
public void draw() {
// 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 scene vertices
GLES20.glEnableVertexAttribArray(mPositionHandle);
// Prepare the scene coordinate data
GLES20.glVertexAttribPointer(
mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, VERTEX_STRIDE, vertexBuffer);
// get handle to fragment shader's vColor member
mColorHandle = GLES20.glGetUniformLocation(mProgram, "vColor");
// Set colorVertices for drawing the scene
GLES20.glUniform4fv(mColorHandle, 1, colorVertices, 0);
// Get handle to shape's transformation matrix
int mtrxhandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
// Apply the projection and view transformation
GLES20.glUniformMatrix4fv(mtrxhandle, 1, false, pointsRenderer.mtrxProjectionAndView, 0);
// Draw the scene
GLES20.glDrawArrays(GLES20.GL_POINTS, 0, vertexCount);
// Disable vertex array
GLES20.glDisableVertexAttribArray(mPositionHandle);
if (drawLines) {
GLES20.glUseProgram(mLinesProgram);
mLinesPositionHandle = GLES20.glGetAttribLocation(mLinesProgram, "vPosition");
GLES20.glEnableVertexAttribArray(mLinesPositionHandle);
// Prevent null pointer race condition
if (linesVertexBuffer != null) {
GLES20.glVertexAttribPointer(
mLinesPositionHandle,
COORDS_PER_VERTEX,
GLES20.GL_FLOAT,
false,
VERTEX_STRIDE,
linesVertexBuffer);
mLinesColorHandle = GLES20.glGetUniformLocation(mLinesProgram, "vColor");
GLES20.glUniform4fv(mLinesColorHandle, 1, colorLines, 0);
int mtrxLineshandle = GLES20.glGetUniformLocation(mLinesProgram, "uMVPMatrix");
GLES20.glUniformMatrix4fv(
mtrxLineshandle, 1, false, pointsRenderer.mtrxProjectionAndView, 0);
// GLES20.glDrawArrays(GLES20.GL_LINE_STRIP, 0, linesVertexCount);
// GLES20.glDrawArrays(GLES20.GL_LINES, 0, linesVertexCount);
// GLES20.glDrawArrays(GLES20.GL_LINE_LOOP, 0, linesVertexCount);
// GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, linesVertexCount);
GLES20.glDrawArrays(renderMethod, 0, linesVertexCount);
GLES20.glDisableVertexAttribArray(mLinesPositionHandle);
}
}
}
@Override
public void draw(
float[] mMVPMatrix, float[] mRotationMatrix, float[] mvMatrix, float[] mProjMatrix) {
if (visible && canvasSurfaceCreated()) {
if (!initialized) {
if (!initObject()) {
return;
}
}
// Add program to OpenGL environment
GLES20.glUseProgram(programHandle);
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureDataHandle);
GLES20.glUniform1i(textureUniformHandle, 0);
// Enable a handle to the triangle vertices
// Prepare the triangle coordinate data
vBuffer.position(0);
GLES20.glVertexAttribPointer(
positionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, vertexStride, vBuffer);
GLES20.glEnableVertexAttribArray(positionHandle);
// Pass in the texture coordinate information
textureBuffer.position(0);
GLES20.glVertexAttribPointer(
textureCoordinateHandle,
COORDS_PER_TEXTURE,
GLES20.GL_FLOAT,
false,
(COORDS_PER_TEXTURE * 4),
textureBuffer);
GLES20.glEnableVertexAttribArray(textureCoordinateHandle);
Matrix.multiplyMM(mMVPMatrix, 0, mvMatrix, 0, mModelMatrix, 0);
// Apply the projection and view transformation
GLES20.glUniformMatrix4fv(mModelMatrixHandle, 1, false, mMVPMatrix, 0);
GLES20Renderer.checkGLError("glUniformMatrix4fv");
Matrix.multiplyMM(mMVPMatrix, 0, mProjMatrix, 0, mMVPMatrix, 0);
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);
GLES20Renderer.checkGLError("glUniformMatrix4fv");
// Draw the square
GLES20.glDrawElements(
GLES20.GL_TRIANGLES, drawOrder.length, GLES20.GL_UNSIGNED_SHORT, drawBuffer);
// Disable vertex array
// GLES20.glDisableVertexAttribArray(positionHandle);
}
}
/** Draws a cube. */
private void drawCube() {
// Pass in the position information
mCubePositions.position(0);
GLES20.glVertexAttribPointer(
mPositionHandle, mPositionDataSize, GLES20.GL_FLOAT, false, 0, mCubePositions);
GLES20.glEnableVertexAttribArray(mPositionHandle);
// Pass in the color information
mCubeColors.position(0);
GLES20.glVertexAttribPointer(
mColorHandle, mColorDataSize, GLES20.GL_FLOAT, false, 0, mCubeColors);
GLES20.glEnableVertexAttribArray(mColorHandle);
// Pass in the normal information
mCubeNormals.position(0);
GLES20.glVertexAttribPointer(
mNormalHandle, mNormalDataSize, GLES20.GL_FLOAT, false, 0, mCubeNormals);
GLES20.glEnableVertexAttribArray(mNormalHandle);
// Pass in the texture coordinate information
mCubeTextureCoordinates.position(0);
GLES20.glVertexAttribPointer(
mTextureCoordinateHandle,
mTextureCoordinateDataSize,
GLES20.GL_FLOAT,
false,
0,
mCubeTextureCoordinates);
GLES20.glEnableVertexAttribArray(mTextureCoordinateHandle);
// This multiplies the view matrix by the model matrix, and stores the result in the MVP matrix
// (which currently contains model * view).
Matrix.multiplyMM(mMVPMatrix, 0, mViewMatrix, 0, mModelMatrix, 0);
// Pass in the modelview matrix.
GLES20.glUniformMatrix4fv(mMVMatrixHandle, 1, false, mMVPMatrix, 0);
// This multiplies the modelview matrix by the projection matrix, and stores the result in the
// MVP matrix
// (which now contains model * view * projection).
Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
// Pass in the combined matrix.
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);
// Pass in the light position in eye space.
GLES20.glUniform3f(
mLightPosHandle, mLightPosInEyeSpace[0], mLightPosInEyeSpace[1], mLightPosInEyeSpace[2]);
// Draw the cube.
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, 36);
}
public void onDrawFrame(GL10 glUnused) {
synchronized (this) {
if (updateSurface) {
mSurface.updateTexImage();
mSurface.getTransformMatrix(mSTMatrix);
updateSurface = false;
} else {
return;
}
}
GLES20.glClearColor(255.0f, 255.0f, 255.0f, 1.0f);
GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
GLES20.glUseProgram(mProgram);
checkGlError("glUseProgram");
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, mTextureID);
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");
mTextureVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
GLES20.glVertexAttribPointer(
maTextureHandle,
2,
GLES20.GL_FLOAT,
false,
TEXTURE_VERTICES_DATA_STRIDE_BYTES,
mTextureVertices);
checkGlError("glVertexAttribPointer maTextureHandle");
GLES20.glEnableVertexAttribArray(maTextureHandle);
checkGlError("glEnableVertexAttribArray maTextureHandle");
Matrix.setIdentityM(mMVPMatrix, 0);
GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);
GLES20.glUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
checkGlError("glDrawArrays");
GLES20.glFinish();
}
@Override
public void onDrawEye(Eye eyeTransform) {
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);
checkGLError("colorParam");
GLES20.glUseProgram(mProgram);
GLES20.glDrawElements(
GLES20.GL_TRIANGLES, drawOrder.length, GLES20.GL_UNSIGNED_SHORT, drawListBuffer);
checkGLError("befor activeTex");
GLES20.glActiveTexture(GLES20.GL_TEXTURE1);
checkGLError("after activeTex");
GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture);
checkGLError("bind Text");
checkGLError("mPostionHandle");
mPositionHandle = GLES20.glGetAttribLocation(mProgram, "position");
GLES20.glEnableVertexAttribArray(mPositionHandle);
GLES20.glVertexAttribPointer(
mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, vertexStride, vertexBuffer);
checkGLError("mTexture Handle");
mTextureCoordHandle = GLES20.glGetAttribLocation(mProgram, "inputTextureCoordinate");
GLES20.glEnableVertexAttribArray(mTextureCoordHandle);
GLES20.glVertexAttribPointer(
mTextureCoordHandle,
COORDS_PER_VERTEX,
GLES20.GL_FLOAT,
false,
vertexStride,
textureVerticesBuffer);
checkGLError("after mTexture Handle");
mColorHandle = GLES20.glGetAttribLocation(mProgram, "s_texture");
checkGLError("mColor Handel");
GLES20.glDrawElements(
GLES20.GL_TRIANGLES, drawOrder.length, GLES20.GL_UNSIGNED_SHORT, drawListBuffer);
checkGLError("Disable");
GLES20.glDisableVertexAttribArray(mPositionHandle);
GLES20.glDisableVertexAttribArray(mTextureCoordHandle);
checkGLError("before Cube 2");
Matrix.multiplyMM(mView, 0, eyeTransform.getEyeView(), 0, mCamera, 0);
Matrix.multiplyMV(lightPosInEyeSpace, 0, mView, 0, LIGHT_POS_IN_WORLD_SPACE, 0);
checkGLError("before Cube");
float[] perspective = eyeTransform.getPerspective(Z_NEAR, Z_FAR);
Matrix.multiplyMM(modelView, 0, mView, 0, mModelCube, 0);
Matrix.multiplyMM(modelViewProjection, 0, perspective, 0, modelView, 0);
drawCube();
}
public void draw(GL10 gl) {
// Set our vertex/frag shader program.
GLES20.glUseProgram(mProgram);
// Set program handles for drawing.
// mPositionHandle = GLES20.glGetAttribLocation(mProgram, "a_Position");
// mTextureCoordinateHandle = GLES20.glGetAttribLocation(mProgram, "a_TexCoordinate");
mTextureUniformHandle = GLES20.glGetUniformLocation(mProgram, "u_Texture");
// Set the active texture unit to texture unit 0.
// GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
// Bind the texture to this unit.
// GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textures[0]);
vertexBuffer.rewind();
textureBuffer.rewind();
// Tell the texture uniform sampler to use this texture in the shader by binding to texture unit
// 0.
GLES20.glUniform1i(mTextureUniformHandle, 0);
// Point to our buffers
// gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
// gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
// Point to our vertex buffer
// gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer);
// gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer);
GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, vertexBufferPointer);
// first parameter is the ID number of the attribute of the vertex
// we set attribute id = 0 to the position and 1 to the texture coordin
GLES20.glVertexAttribPointer(0, 3, GLES20.GL_FLOAT, false, 0, 0);
GLES20.glEnableVertexAttribArray(0);
GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, textureBufferPointer);
GLES20.glVertexAttribPointer(1, 2, GLES20.GL_FLOAT, false, 0, 0);
GLES20.glEnableVertexAttribArray(1);
// Set the face rotation
// GLES20.glFrontFace(GL10.GL_CW);
// Draw the vertices as triangle strip
GLES20.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, vertices.length / 3);
System.out.println(GLUtils.getEGLErrorString(gl.glGetError()));
// Disable the client state before leaving
// gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
// gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
}
/**
* 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, boolean changeColor) {
if (mProgram != 0) {
// 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);
// Get handle to fragment shader's vColor member
mColor = GLES20.glGetAttribLocation(mProgram, "vColor");
// Enable a handle to the color vertices
GLES20.glEnableVertexAttribArray(mColor);
// 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");
// 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);
}
}
/**
* 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, int eye) {
// Add program to OpenGL environment
GLES20.glUseProgram(mProgram);
// get handle to vertex shader's vPosition member
mPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");
mUVCoordsHandle = GLES20.glGetAttribLocation(mProgram, "aTexCoord");
mSamplerUniformHandle = GLES20.glGetUniformLocation(mProgram, "sTexture");
// Enable a handle to the triangle vertices
GLES20.glEnableVertexAttribArray(mPositionHandle);
GLES20.glEnableVertexAttribArray(mUVCoordsHandle);
// Prepare the triangle coordinate data
GLES20.glVertexAttribPointer(
mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, vertexStride, vertexBuffer);
GLES20.glVertexAttribPointer(mUVCoordsHandle, 2, GLES20.GL_FLOAT, true, 2 * 4, uvBuffer);
int index = 0;
int textureUnit = 0;
if (eye == Eye.Type.LEFT) {
index = 0;
} else {
index = 1;
}
textureUnit = GLES20.GL_TEXTURE0 + index;
GLES20.glActiveTexture(textureUnit);
GLES20.glUniform1i(mSamplerUniformHandle, index);
// 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);
GLES20.glDisableVertexAttribArray(mUVCoordsHandle);
}
public void drawSphere(final FloatBuffer aSphereBuffer) {
aSphereBuffer.position(mPositionOffset);
GLES20.glVertexAttribPointer(
mPositionHandle, mPositionDataSize, GLES20.GL_FLOAT, false, 0, aSphereBuffer);
GLES20.glEnableVertexAttribArray(mPositionHandle);
// Pass in the color information
// aTriangleBuffer.position(mColorOffset);
// GLES20.glVertexAttribPointer(mColorHandle, mColorDataSize, GLES20.GL_FLOAT, false,
// mStrideBytes, aTriangleBuffer);
//
// GLES20.glEnableVertexAttribArray(mColorHandle);
// This multiplies the view matrix by the model matrix, and stores the result in the MVP matrix
// (which currently contains model * view).
Matrix.multiplyMM(mMVPMatrix, 0, mViewMatrix, 0, mModelMatrix, 0);
// This multiplies the modelview matrix by the projection matrix, and stores the result in the
// MVP matrix
// (which now contains model * view * projection).
Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, sphereTriangles * 3);
}
public void draw() {
// Add program to OpenGLES 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, mVertexStride, mVertexBuffer);
// get handle to fragment shader's vColor member
mColorHandle = GLES20.glGetUniformLocation(mProgram, "vColor");
// set color for drawing the triangle
GLES20.glUniform4fv(mColorHandle, 1, mColor, 0);
// draw the triangle
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, mVertexCount);
// disable vertex array
GLES20.glDisableVertexAttribArray(mPositionHandle);
}
public void GenerateVertexArray(
float[] arrayBuffer, int bufferSize, int valuesPerElement, int attributeNumber) {
FloatBuffer.allocate(arrayBuffer.length);
FloatBuffer bufferData =
ByteBuffer.allocateDirect(bufferSize).order(ByteOrder.nativeOrder()).asFloatBuffer();
bufferData.put(arrayBuffer).position(0);
IntBuffer bufferID = (IntBuffer.allocate(1));
bufferID.position(0);
GLES20.glGenBuffers(1, bufferID);
GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, bufferID.get(0));
GLES20.glBufferData(GLES20.GL_ARRAY_BUFFER, bufferSize, bufferData, GLES20.GL_STATIC_DRAW);
GLES20.glVertexAttribPointer(
attributeNumber, // attribute
valuesPerElement, // size
GLES20.GL_FLOAT, // type
false, // normalized?
valuesPerElement * FLOAT_SIZE_BYTES, // stride
0 // array buffer offset
);
vertexArrayList.add(new GLVertexArrayObject(bufferID.get(), attributeNumber, valuesPerElement));
}
@Override
public void onSurfaceCreated(GL10 unused, EGLConfig config) {
int program = GLES20.glCreateProgram();
addShaderTo(GLES20.GL_VERTEX_SHADER, VERTEX_SHADER_STRING, program);
addShaderTo(GLES20.GL_FRAGMENT_SHADER, FRAGMENT_SHADER_STRING, program);
GLES20.glLinkProgram(program);
int[] result = new int[] {GLES20.GL_FALSE};
result[0] = GLES20.GL_FALSE;
GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, result, 0);
abortUnless(result[0] == GLES20.GL_TRUE, GLES20.glGetProgramInfoLog(program));
GLES20.glUseProgram(program);
GLES20.glUniform1i(GLES20.glGetUniformLocation(program, "y_tex"), 0);
GLES20.glUniform1i(GLES20.glGetUniformLocation(program, "u_tex"), 1);
GLES20.glUniform1i(GLES20.glGetUniformLocation(program, "v_tex"), 2);
// Actually set in drawRectangle(), but queried only once here.
posLocation = GLES20.glGetAttribLocation(program, "in_pos");
int tcLocation = GLES20.glGetAttribLocation(program, "in_tc");
GLES20.glEnableVertexAttribArray(tcLocation);
GLES20.glVertexAttribPointer(tcLocation, 2, GLES20.GL_FLOAT, false, 0, textureCoords);
GLES20.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
checkNoGLES2Error();
}
public void draw(float[] mvpMatrix) {
// Add program to OpenGL ES 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");
// Pass the projection and view transformation to the shader
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mvpMatrix, 0);
// Draw the triangle
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vertexCount);
// Disable vertex array
GLES20.glDisableVertexAttribArray(mPositionHandle);
}
public void draw() {
// 将program加入OpenGL ES环境中
GLES20.glUseProgram(mProgram);
// 获取指向vertex shader的成员vPosition的 handle
mPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");
// 启用一个指向三角形的顶点数组的handle
GLES20.glEnableVertexAttribArray(mPositionHandle);
// 准备三角形的坐标数据
GLES20.glVertexAttribPointer(
mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, vertexStride, vertexBuffer);
// 获取指向fragment shader的成员vColor的handle
mColorHandle = GLES20.glGetUniformLocation(mProgram, "vColor");
// 设置三角形的颜色
GLES20.glUniform4fv(mColorHandle, 1, color, 0);
// 画三角形
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vertexCount);
// 禁用指向三角形的顶点数组
GLES20.glDisableVertexAttribArray(mPositionHandle);
}
@Override
public void onDrawFrame(GL10 unused) {
GLES20.glClearColor(0f, 0f, 0f, 0f);
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);
if (mShaderCompilerSupport[0] == false) {
return;
}
GLES20.glDisable(GLES20.GL_DEPTH_TEST);
GLES20.glEnable(GLES20.GL_BLEND);
GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);
float angle = (SystemClock.uptimeMillis() % 5000) / 5000f * 360;
Matrix.setRotateM(mMatrixModel, 0, angle, 1, 2, 0);
Matrix.multiplyMM(mMatrixModelViewProjection, 0, mMatrixView, 0, mMatrixModel, 0);
Matrix.multiplyMM(
mMatrixModelViewProjection, 0, mMatrixProjection, 0, mMatrixModelViewProjection, 0);
mShaderSpline.useProgram();
GLES20.glUniformMatrix4fv(
mShaderSpline.getHandle("uModelViewProjectionM"), 1, false, mMatrixModelViewProjection, 0);
GLES20.glVertexAttribPointer(
mShaderSpline.getHandle("aPosition"), 2, GLES20.GL_FLOAT, false, 0, mBufferSpline);
GLES20.glEnableVertexAttribArray(mShaderSpline.getHandle("aPosition"));
for (float[] ctrl : mSplines) {
GLES20.glUniform3fv(mShaderSpline.getHandle("uCtrl"), 4, ctrl, 0);
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, COUNT_VERTICES);
}
}
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);
}