Thank you both. Dark Photon, that's a real revelation there. Funny how a misconception sometimes gets to be adopted by a majority as a standard. I'd...

@rakeshthp How cool. I did something similar for my dissertation, but did it all in PostScript written by FORTRAN, since OpenGL wasn't available...

@Roaoul Thanks for the explaination. Firstly, I am sorry for improperly presenting what I require. The car's post was just an example. What I...

Some compilers might resolve it that way, but it's not guaranteed. I'd be more inclined to write this as "dot (normalTex.xy, normalTex.xy)"...

More of a brain fart then, but to my defense the ref I looked up at the time didn't mention this limitation. Also my first assumption was pow(x, 2)...

The issue was that mamo had wrong expectation for the quaternion constructors. It doesn't take an axis and an angle but there is a function for that...

The documentation for pow() says: In general, raising a negative value to a fractional power produces a complex result. There are specific cases...

Not much. I think we have different ideas of what you are trying to do. Carmine's directions would replace calling glOrtho() on resizing/shaping...

GL_LUMINANCE and the sized versions thereof are deprecated. If you want a single-component texture, use GL_RED, and use swizzling to expand one...

Yeah, a complete tutorial would be helpful, but 2 things that will be causing a black screen: 1) You need to load the texture before drawing the...

For some reasons you can get a lot of performance from changing this: for(int i = 0; i < soManyLoops; ++i) ...to this: for(int i = soManyLoops; i...

i think you should look over some tutorials. the code youre using is from a very old opengl by the way. if you want to learn old opengl then visit...

Hello, thank you very much. Im fairly new to Open GL and thought it was possible to display the image without a support object sort to say. So then...

Benchmarking executions is what you want, but FPS (frames per second) is not what you want to use as a metric (it is non-linear). Use "ms per frame"...

If you look up pow(x,y) in the GLSL programming guide, you'll see that its not defined where x < 0 (and also when x == 0 and y <= 0). The reason is...

Or, take a look at your double post. Seriously.

Let's find your answer by taking the dot product of the fact that I'm just a noob in this matter with your question being a little generic :D what...

Loading a texture isn't enough, you need to draw some triangles too. Instead of loading the texture every frame (which will cause you too run out of...

@Roaoul Are you trying to explain the same thing what carmine explained?

Croc, The call to gluPerspective() creates a cool perspective matrix (Googl gluPerspective), and then multiplies that into the current matrix from...

Hi CroCodile, in the Reshape function you are setting up the projection matrix and you first switch to the projection matrix:...

What you've pulled off is awesome. Don't feel embarrassed. OpenGL does that to me all the time: see my post on "Lost Hello Triangle". :P Welcome...