Method readRasterBuffer

mapoglrenderer.cpp:216–232

}

void OglRenderer::readRasterBuffer(rasterBufferObj * rb) 
{   
    makeCurrent();
    unsigned char* buffer = new unsigned char[4 * width * height];
    glReadPixels(0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
    
    rb->type =MS_BUFFER_BYTE_RGBA;
    rb->data.rgba.pixels = buffer;
    rb->data.rgba.row_step = 4*width;
    rb->data.rgba.pixel_step = 4;
    rb->width = width;
    rb->height = height;
    rb->data.rgba.r = &buffer[2];
    rb->data.rgba.g = &buffer[1];
    rb->data.rgba.b = &buffer[0];
    rb->data.rgba.a = NULL;
}

void OglRenderer::drawRasterBuffer(rasterBufferObj *overlay, double opacity, int srcX, int srcY, int dstX, int dstY, int width, int height)
{