Cocos2dx下 基本的OpenGL ES 绘图

void GLFirstLayer::draw()
{
   // CCLayer::draw();
    
    
    //顶点数据
    static GLfloat vertex[] = {
        0,0,0,
        200,0,0,
        0,200,0,
        200,200,0
    };
    
    //纹理坐标
    static GLfloat coord[] = {
        0,1,
        1,1,
        0,0,
        1,0
    };
    
    //颜色数据
    static GLfloat color[] = {
        1,1,1,1,
        1,1,1,1,
        1,1,1,1,
        1,1,1,1
    };
    
    
    //初始化纹理
    static CCTexture2D* texture2d = NULL;
    if (!texture2d) {
        texture2d = CCTextureCache::sharedTextureCache()->addImage("HelloWorld.png");
    }
    
    //设置着色器
    ccGLEnableVertexAttribs(kCCVertexAttribFlag_PosColorTex);
    texture2d->getShaderProgram()->use();
    texture2d->getShaderProgram()->setUniformForModelViewProjectionMatrix();
    
    
    //绑定纹理
    glBindTexture(GL_TEXTURE_2D, texture2d->getName());
    
    
    //设置顶点数据
    glVertexAttribPointer(kCCVertexAttrib_Position, 3, GL_FLOAT, GL_FALSE, 0, vertex);
    glVertexAttribPointer(kCCVertexAttrib_Color, 4, GL_FLOAT, GL_FALSE, 0, color);
    glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, 0, coord);
    
    //绘图
    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}

上面就绘制了一个矩形，直接重写 draw()方法即可