screen shot in opengl

Graphics and GPU Programming Programming OpenGL

Started by dragonsimoto February 17, 2002 05:45 PM

4 comments, last by dragonsimoto 22 years, 2 months ago

122

Author

February 17, 2002 05:45 PM

I was wondering how u get a Screenshot of just the window using vc++ 6? any sources for examples or emails would be great!

RegularKid

139

February 17, 2002 09:52 PM

That would probably be pretty hard. I would suggest going into fullscreen mode and then just writing the whole screen color buffer into a .bmp or whatever file format you want to use. Hope this helps.

Fruny

1,658

February 17, 2002 11:20 PM

glReadPixels(...) to dump the framebuffer to memory as an array of bytes

Write "P3 < image width > < image height > 255< newline >"
(e.g. "P3 800 600 255")

Then write out the RGB triplets for each pixel in ascii format
(max, 70 character per line)

Save that as a .PPM file

Alternatively, put P6 in the header line and spit your triplets in binary.

Edited by - Fruny on February 17, 2002 12:21:10 AM

"Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it." — Brian W. Kernighan

Spikeles

122

February 18, 2002 08:11 AM

Did you try switching to the window and pressing Print Screen? and then going to a paint program and going edit->paste?

Subotron

182

February 18, 2002 08:24 AM

d0h!

Maybe he wants to insert a function so the user can easily make screenshots, or for the programme itself to make screenshots every x minutes?

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