I am learning openGL now. But I found that it is very complicated with the vertex value. I dont even know what values should I put in order to draw a simple cube. So, I plan to draw out a texture that I import from an image directly. Is it possible?
There are a lots of array in openGL. I am totally lost here. What kind of array should I use for texture?
A cube? Make it -1.0 to 1.0.
No, you can’t draw a texture. You can only texturemap polygons.
What kind of array to use for a texture?
Assuming your image data is RGBA8, declare your array as
GLubyte myarray = new GLubyte[wh*4];
You might want to read the Red Book.
This is the online version of the first Red Book.
and click on
Chapter 9: Texture Mapping