在Marmalade SDK模拟器上,截图被拍摄得很好,“交叉”效果起到了作用：

但是,这是iOS和Android设备的外观 – 损坏：
http://www.eikona.info/images/81269689420703803966.png

我总是将屏幕看作RGBA 1字节/通道,因为documentation says总是被接受.

以下是用于截取屏幕截图的代码：

uint8* Gfx::ScreenshotBuffer(int& deviceWidth,int& deviceHeight,int& dataLength) {

    /// width/height
    deviceWidth = IwGxGetDeviceWidth();
    deviceHeight = IwGxGetDeviceHeight();
    int rowLength = deviceWidth * 4; /// data always returned by GL as RGBA,1 byte/each

    dataLength = rowLength * deviceHeight;

    // set the target framebuffer to read
    glPixelStorei(GL_UNPACK_ALIGNMENT,1);
    glPixelStorei(GL_PACK_ALIGNMENT,1);
    uint8* buffer = new uint8[dataLength];
    glReadPixels(0,deviceWidth,deviceHeight,GL_RGBA,GL_UNSIGNED_BYTE,buffer);

    return buffer;
}

void Gfx::ScreenshotImage(CIwImage* img,uint8*& pbuffer) {

    int deviceWidth,dataLength;

    pbuffer = ScreenshotBuffer(deviceWidth,dataLength);
    img->SetFormat(CIwImage::ABGR_8888);
    img->SetWidth(deviceWidth);
    img->SetHeight(deviceHeight);
    img->SetBuffers(pbuffer,dataLength,0);
}