Problem with glDrawArrays

Hi,
i'm sure this is a stupid problem, but I'm unable to make glDrawArrays work.
I'm trying to display a simple triangle: if I use glVertex3f(...) for each vertex it works, while if I use glDrawArrays(...) it doesn't.

I've attached my code: Renderer.java

Where is glColorPointer???

I think that if GL_COLOR_ARRAY isn't enabled you can specify the color using glColor4f(...) even if you are using glVertexPointer/glDrawArrays...
However I updated my code and added glColorPointer and the color array, but it still shows nothing.

Here's the code: Renderer.java

Any hints?

Maybe try to disable explicitly the color array.

Edit.: Don't do this:

Matteo Battaglio wrote

triangle = ByteBuffer.allocateDirect(triangleSizeInBytes).asFloatBuffer();

Use Buffers.newFloatBuffer.

gouessej wrote

Don't do this:

Matteo Battaglio wrote

triangle = ByteBuffer.allocateDirect(triangleSizeInBytes).asFloatBuffer();

Use Buffers.newFloatBuffer.

Yeah!!
It solved my problem.
Many thanks for your support!

You're welcome. Actually, what you did didn't take into account the native order of your buffers, several beginners here made the same mistake.

You can have a look at my source code if you want to know how to use JOGL (even though I still use JOGL 1.1.1a :(). I looked at it to understand why your code was not working.

Demoscene Passivist and Sven have a lot of examples too.

gouessej wrote

You're welcome. Actually, what you did didn't take into account the native order of your buffers, several beginners here made the same mistake.

I understand, damned byte order!

gouessej wrote

You can have a look at my source code if you want to know how to use JOGL (even though I still use JOGL 1.1.1a :(). I looked at it to understand why your code was not working.

Demoscene Passivist and Sven have a lot of examples too.

Thanks for the hint! I'll take a look at your code and examples when I don't understand something...