Image from file

Graphics and GPU Programming Programming OpenGL

Started by cerin April 15, 2006 01:33 PM

3 comments, last by Kalidor 18 years ago

cerin

122

Author

April 15, 2006 01:33 PM

What command do I use to get OpenGL to draw an image from an image file?

daniel_i_l

295

April 15, 2006 01:52 PM

Look at NeHe's tutorials (search NeHe on google), I think you want tutorial 7 on texture mapping.

"We've all heard that a million monkeys banging on a million typewriters will eventually reproduce the entire works of Shakespeare. Now, thanks to the internet, we know this is not true." -- Professor Robert Silensky

cerin

122

Author

April 17, 2006 10:03 AM

No, I don't believe that it is. I want to display the image as the background for the opening screen.

nefthy

184

April 17, 2006 10:46 AM

load the image as a texture, then draw a quad that covers the whole screen with that texture.

Kalidor

1,087

April 17, 2006 12:35 PM

You could use glDrawPixels to write the image directly to the frame buffer. You still need to load the image from the file yourself to get the pixel data. Using a textured quad is the way to go however; that way you only have to transfer the image data to the video card instead of every time you want to draw it.

Image from file

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