Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (736)
Games in Android Showcase (223)
games submitted by our members
Games in WIP (813)
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  
  Vertex Array Sample??  (Read 2491 times)
0 Members and 1 Guest are viewing this topic.
Offline 2late4u

Senior Newbie


« Posted 2004-03-23 06:06:28 »

Hi to all ...
have someone some example of usign java.nio.buffer for this opengl calls?

gl.glVertexPointer(int p1, gl.GL_FLOAT, 0, Buffer);
gl.glTexCoordPointer(2, gl.GL_FLOAT, 0, Buffer);

how do i can fills the buffers?
and ... when i must do it?
Offline overnhet

Junior Devvie

Java games rock!

« Reply #1 - Posted 2004-03-23 06:51:15 »

1) allocate a direct, native ordered {Byte, Float, Int}Buffer per data set using

2) fill each buffer with data (using put(int[]) for example)

3) enable GL states with glEnableClientState(GL_VERTEX_ARRAY) and glEnableClientState(GL_TEXTURE_COORD_ARRAY)

4) bind buffers :
glVertexPointer(3, GL_INT, 0, vertices);
glColorPointer(3, GL_FLOAT, 0, colors);

5) draw with glDrawArrays (draw everything) or glDrawElements (draw only a subset)

Some comments :

* even though you can use a single buffer to store all your vertex, texture coord, color and normal data, it is IMO easier to keep them in separate buffers

* usually you'll only need to enable vertex array states once, in the init method

* when you bind a buffer, data can be copied but it is not a requirement ; therefore when you modify your buffer you must rebind it
Pages: [1]
  ignore  |  Print  
You cannot reply to this message, because it is very, very old.

cybrmynd (118 views)
2017-08-02 12:28:51

cybrmynd (139 views)
2017-08-02 12:19:43

cybrmynd (136 views)
2017-08-02 12:18:09

Sralse (152 views)
2017-07-25 17:13:48

Archive (620 views)
2017-04-27 17:45:51

buddyBro (730 views)
2017-04-05 03:38:00

CopyableCougar4 (1255 views)
2017-03-24 15:39:42

theagentd (1235 views)
2017-03-24 15:32:08

Rule (1213 views)
2017-03-19 12:43:22

Rule (1265 views)
2017-03-19 12:42:17
List of Learning Resources
by elect
2017-03-13 14:05:44

List of Learning Resources
by elect
2017-03-13 14:04:45

SF/X Libraries
by philfrei
2017-03-02 08:45:19

SF/X Libraries
by philfrei
2017-03-02 08:44:05

SF/X Libraries
by SkyAphid
2017-03-02 06:38:56

SF/X Libraries
by SkyAphid
2017-03-02 06:38:32

SF/X Libraries
by SkyAphid
2017-03-02 06:38:05

SF/X Libraries
by SkyAphid
2017-03-02 06:37:51 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‑
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!