Java-Gaming.org    
Featured games (81)
games approved by the League of Dukes
Games in Showcase (492)
Games in Android Showcase (112)
games submitted by our members
Games in WIP (556)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  about glGetFloat  (Read 2063 times)
0 Members and 1 Guest are viewing this topic.
Offline Ushio

Junior Newbie





« Posted 2011-05-27 12:22:46 »

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

I wrote this code.
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
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.

Offline Mike

JGO Wizard


Medals: 74
Projects: 1
Exp: 6 years


Java guru wanabee


« Reply #1 - Posted 2011-05-27 14:03:32 »

1  
2  
3  
4  
5  
6  
7  
8  
9  
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

My current game, Minecraft meets Farmville and goes online Smiley
State of Fortune | Discussion thread @ JGO
Offline gouessej
« Reply #2 - Posted 2011-05-27 14:04:30 »

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

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

Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline Ushio

Junior Newbie





« Reply #3 - Posted 2011-05-27 16:08:52 »

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.
Offline ra4king

JGO Kernel


Medals: 345
Projects: 3
Exp: 5 years


I'm the King!


« Reply #4 - Posted 2011-05-27 19:11:52 »

...
because I used BufferUtils.createFloatBuffer() Instead of BufferUtils.createFloatBuffer(),
...
Those are the same thing Tongue

Offline Ushio

Junior Newbie





« Reply #5 - Posted 2011-05-27 20:17:27 »

oh ... miss take! Shocked
I used BufferUtils.createFloatBuffer() Instead of ByteBuffer.allocateDirect(16 * 4).asFloatBuffer();
Offline ra4king

JGO Kernel


Medals: 345
Projects: 3
Exp: 5 years


I'm the King!


« Reply #6 - Posted 2011-05-27 20:50:38 »

Haha alright Smiley

Offline Mike

JGO Wizard


Medals: 74
Projects: 1
Exp: 6 years


Java guru wanabee


« Reply #7 - Posted 2011-05-28 07:58:07 »

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 Smiley I've adjusted my code so that no one spreads it.

Mike

My current game, Minecraft meets Farmville and goes online Smiley
State of Fortune | Discussion thread @ JGO
Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

 

Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.

Nickropheliac (16 views)
2014-08-31 22:59:12

TehJavaDev (23 views)
2014-08-28 18:26:30

CopyableCougar4 (33 views)
2014-08-22 19:31:30

atombrot (42 views)
2014-08-19 09:29:53

Tekkerue (41 views)
2014-08-16 06:45:27

Tekkerue (35 views)
2014-08-16 06:22:17

Tekkerue (26 views)
2014-08-16 06:20:21

Tekkerue (37 views)
2014-08-16 06:12:11

Rayexar (73 views)
2014-08-11 02:49:23

BurntPizza (49 views)
2014-08-09 21:09:32
List of Learning Resources
by Longor1996
2014-08-16 10:40:00

List of Learning Resources
by SilverTiger
2014-08-05 19:33:27

Resources for WIP games
by CogWheelz
2014-08-01 16:20:17

Resources for WIP games
by CogWheelz
2014-08-01 16:19:50

List of Learning Resources
by SilverTiger
2014-07-31 16:29:50

List of Learning Resources
by SilverTiger
2014-07-31 16:26:06

List of Learning Resources
by SilverTiger
2014-07-31 11:54:12

HotSpot Options
by dleskov
2014-07-08 01:59:08
java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!