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Best texture format

Started by Alpha Nox Jun 23, 2007 at 3:51 PM 2 replies 1k views

Original Post

Jun 23, 2007 at 3:51 PM

Hello everyone, I'm really new to OpenGL and I was wondering what texture format should I use for my game? It's a 2d game in zelda like style, I intend to use either alpha channels or color keying in the textures and heard about TGA, DXT etc. So what format would be the best for me to use? I'd also appreciate if you know any websites with tutorials on how to use that texture format By the way, I'm using SDL+OpenGL. Thanks in advance, Victor Freire

psycho_svk

Jun 23, 2007 at 4:00 PM

png files have alpha values..
you can load them with glpng library [see link for more]

this library is very easy to use - here is the simplest example:

pngInfo info;GLuint id = pngBind("Texture.png", PNG_NOMIPMAP, PNG_SOLID, &info, GL_CLAMP, GL_NEAREST, GL_NEAREST);if (id != 0){   puts("Loaded Texture.png with resounding success");   printf("Size=%i,%i Depth=%i Alpha=%i\n", info.Width, info.Height, info.Depth, info.Alpha);}else{   puts("Can't load Texture.png");   exit(1);}

and then just glBindTexture(GL_TEXTURE_2D, id);

Alpha Nox

Author

Alpha Nox

Jun 23, 2007 at 8:42 PM

Ok, I just downloaded and I'm going to try it, it seems really simple to use indeed.

Thanks a lot for the quick answer!

Promit

Mod

1,082

Promit

Jun 23, 2007 at 8:53 PM

I'd say, download the DevIL image library, and don't worry about your formats. Later on you may want to favor certain formats due to compression or speed benefits, but at this stage it really doesn't matter.

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