about glGetFloat

[Ushio]

I can't use glGetFloat() function well. please help me.

I wrote this code.

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GL11.glMatrixMode(GL11.GL_MODELVIEW); GL11.glLoadIdentity(); GL11.glScalef(10.f, 10.f, 10.f); FloatBuffer FB = ByteBuffer.allocateDirect(16 * 4).asFloatBuffer(); GL11.glGetFloat(GL11.GL_MODELVIEW, FB); for(int i = 0 ; i < 16 ; ++i) {   System.out.println(FB.get(i)); }

but, this program out put this.
0.0
0.0
0.0
0.0
...
0.0
all Zero.
this output is not good.
it is different from I expected.
Where is wrong?
 
I'm Japanese. So My English may have some problems. Please pardon me.

[Mike]

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GL11.glMatrixMode(GL11.GL_MODELVIEW); GL11.glLoadIdentity(); GL11.glScalef(10, 10, 10); FloatBuffer modelview = BufferUtils.createFloatBuffer(16); GL11.glGetFloat(GL11.GL_MODELVIEW_MATRIX, modelview); for(int i = 0 ; i < 16 ; i++) {   System.out.println(modelview.get(i)); }

Mike

[gouessej]

The answer is here:
http://lwjgl.org/forum/index.php?topic=1215.0

Mickelukas, rewind() is not necessary in this case, isn't it?

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[Ushio]

Thank you for your appropriate answers !

I could get good program output,
because I used BufferUtils.createFloatBuffer() Instead of BufferUtils.createFloatBuffer(),
I used glGetFloat(GL11.GL_MODELVIEW_MATRIX...) Instead of glGetFloat(GL11.GL_MODELVIEW...)

My problem is solved!.
Thank you.

[ra4king]

...
because I used BufferUtils.createFloatBuffer() Instead of BufferUtils.createFloatBuffer(),
...

Those are the same thing

[Ushio]

oh ... miss take!
I used BufferUtils.createFloatBuffer() Instead of ByteBuffer.allocateDirect(16 * 4).asFloatBuffer();

[ra4king]

Haha alright

[Mike]

Mickelukas, rewind() is not necessary in this case, isn't it?

That's true, I copied the necessary lines from my code and it snuck in I've adjusted my code so that no one spreads it.

Mike