Re: [fltk.general] how to improve image draw speed in fltk1.3

2012-05-22 Thread Greg Ercolano
On 05/21/12 19:27, leowang wrote: Dear All, I found that the fltk draw image speed is not fast, for example, I have a 1280*800 window which has a 1280*800 png file as it's background, it will takes about 2 second to display it in my arm board, the CPU is 800MHz, my compile tools is

Re: [fltk.general] how to improve image draw speed in fltk1.3

2012-05-22 Thread leowang
On 05/21/12 19:27, leowang wrote: Dear All, I found that the fltk draw image speed is not fast, for example, I have a 1280*800 window which has a 1280*800 png file as it's background, it will takes about 2 second to display it in my arm board, the CPU is 800MHz, my compile tools is

Re: [fltk.general] how to improve image draw speed in fltk1.3

2012-05-22 Thread leowang
On 05/21/12 19:27, leowang wrote: Dear All, I found that the fltk draw image speed is not fast, for example, I have a 1280*800 window which has a 1280*800 png file as it's background, it will takes about 2 second to display it in my arm board, the CPU is 800MHz, my compile

Re: [fltk.general] how to improve image draw speed in fltk1.3

2012-05-22 Thread MacArthur, Ian (SELEX GALILEO, UK)
additional information, the png has transparent effect will let the speed slower, if the png has no transparent effect, the speed is fast. Transparency probably requires that the image be composited. Compositing is expensive and slow on most graphics hardware, so if your graphics hardware is

[fltk.general] how to improve image draw speed in fltk1.3

2012-05-21 Thread leowang
Dear All, I found that the fltk draw image speed is not fast, for example, I have a 1280*800 window which has a 1280*800 png file as it's background, it will takes about 2 second to display it in my arm board, the CPU is 800MHz, my compile tools is amr-linux-gcc-4.3.2, I have break down the