How to direct a simple graphics application to a different framebuffer?

sudiptasubudhi — Wed, 18 Mar 2015 13:37:02 GMT

Hi,

I am using a simple graphics application VertexColors.c in gpu_sdk_v1.00 from freescale. It has main(), init(),render(),resize() as the function blocks. and the flow of calls is like

1.main() => init() (i.e. main() is calling init())

2.init() => resize()

3.after init(), main() => render()

and then eglSwapBuffers(egldisplay, eglsurface) is called.

And now to direct it to /dev/fb1 i assume i have to include:

int fd_fb,result;

//Applying color key

struct mxcfb_color_key color_key;

color_key.color_key = 0x0;

color_key.enable = 1;

if ((fd_fb = open("/dev/fb1", O_RDWR, 0)) < 0)

{

return 0;

}

if ( ioctl(fd_fb, MXCFB_SET_CLR_KEY, &color_key) < 0) {

printf("Error in applying Color Key\n");

}

struct mxcfb_loc_alpha loc_alpha;

ioctl(fd_fb, FBIOBLANK, FB_BLANK_NORMAL);

loc_alpha.enable = 1;

loc_alpha.alpha_in_pixel = 1;

result = ioctl(fd_fb, MXCFB_SET_LOC_ALPHA, &loc_alpha);

if (result < 0)

{

printf("fb ioctl MXCFB_SET_LOC_ALPHA fail\n");

//goto err1;

}

ioctl(fd_fb, MXCFB_WAIT_FOR_VSYNC, 0);

ioctl(fd_fb, FBIOBLANK, FB_BLANK_UNBLANK);

close(fd_fb);

Please correct me if i am wrong or if i am missing any details. But, i wonder where to include this piece of code in the given application.

Thanks in advance.

Sudlin

Re: How to direct a simple graphics application to a different framebuffer?

Bio_TICFSL — Mon, 30 Mar 2015 15:44:56 GMT

The provided answer on Re: How to direct a simple graphics application to a different framebuffer? is correct!

i.MX ProcessorsのトピックRe: How to direct a simple graphics application to a different framebuffer?

How to direct a simple graphics application to a different framebuffer?

Re: How to direct a simple graphics application to a different framebuffer?