Hello Nik, Thank you very much, I gave it a look but for what I can see they draw the textures by placing them directly somewhere in 2D and specifying the pixels positions directly. My game is 3D and the moves are kind of complicated, so mapping the textures directly into each one of my quads would make my life a million times easier than using the approach from Raincat, I don't even think it's posible for me, it would be insane. Also it would be nice to be able to load the textures using nothing but OpenGL, so no extra libraries are needed. Greeting, Hector Guilarte On Sun, Jul 11, 2010 at 8:03 AM, wrote:

Hector, I also had trouble finding documentation on this topic. I'm not sure exactly where you are stuck, but have you tried using SDL-image (http://hackage.haskell.org/package/SDL-image) to turn the PNG into an IO Surface? That is how Raincat loads textures:

http://github.com/styx/Raincat/blob/f458d076d9961b739d3010725ad7055b02282d25...

I hope that helps, in some way.

Nik

On Sat, Jul 10, 2010 at 9:02 PM, Hector Guilarte wrote:

...

Hello, I've been looking for a way to map a texture into a Quad primitive with HOpenGL with no luck. I've already done this in C++ and had no problem. I did the tutorial in http://www.haskell.org/~pairwise/HOpenGL/HOpenGL.html, downloaded the sources, compiled them and it worked great, but when I change the code to use a .rgb file created by me with the program they provide from a .png file of 256x256 pixels I don't have the same luck... My OpenGL version is 2.4.0.1... I'm really lost in mapping the file, so any kind of help would be greatly appretiated. I checked the textures in the examples of the red book, but they are "procedural" textures, and I need to map an image. One of the pictures I need to map is in http://dl.dropbox.com/u/1476919/Orange256.png Are six like that one and are for making a Rubik's Cube. After I finish it I'll upload it to hackage and let you all know. Thanks a lot, Hector Guilarte _______________________________________________ HOpenGL mailing list HOpenGL@haskell.org http://www.haskell.org/mailman/listinfo/hopengl