So.. Yeah. I've never really wanted to bother with loading openGL textures from
a file, since whenever I looked into it, I had to use a separate library. Now
that I'm using FLTK, I thought it'd be easy since FLTK has some image loading
functionality. I tried using a Fl_PNG_Image and using its data(). It will
display something, but not the image I have on disk, so I guess I'm doing
something wrong.
This is what I use:
Fl_PNG_Image png("test.png");
..
glGenTextures(1, &TexID);
glBindTexture(GL_TEXTURE_2D, TexID);
glTexImage2D(GL_TEXTURE_2D, 0, 3, png.w(), png.h(), 0, GL_RGB,
GL_UNSIGNED_BYTE, png.data());
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glEnable(GL_TEXTURE_2D);
I figure, since it's displaying something, I'm passing the wrong parameters to
glTexImage2D, but since I've never used that function before, I have no idea
how I could fix it.
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