Java-Gaming.org Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (741)
Games in Android Showcase (225)
games submitted by our members
Games in WIP (823)
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  
  LWJGL problem with shared contexts  (Read 1242 times)
0 Members and 1 Guest are viewing this topic.
Offline theagentd
« Posted 2015-02-22 01:32:17 »

Due to some reasons we recently put our asset loading code in their own threads. These threads have their own shared OpenGL contexts, but it seems like we don't need it, so we'll probably make them normal threads. Anyway, the point is that sometimes when a shared context is made current on the new thread, it crashes due to some kind of concurrency issue sometimes. This is with the latest stable version of LWJGL 2. The problem seems related to capabilities checking that the context switch triggers.

Quote
java.lang.IllegalStateException: Function is not supported
   at org.lwjgl.BufferChecks.checkFunctionAddress(BufferChecks.java:58)
   at org.lwjgl.opengl.GL11.glGetError(GL11.java:1301)
   at org.lwjgl.opengl.Util.checkGLError(Util.java:57)
   at org.lwjgl.opengl.GLContext.getSupportedExtensions(GLContext.java:280)
   at org.lwjgl.opengl.ContextCapabilities.initAllStubs(ContextCapabilities.java:5802)
   at org.lwjgl.opengl.ContextCapabilities.<init>(ContextCapabilities.java:6240)
   at org.lwjgl.opengl.GLContext.useContext(GLContext.java:374)
   at org.lwjgl.opengl.ContextGL.makeCurrent(ContextGL.java:195)
   at org.lwjgl.opengl.DrawableGL.makeCurrent(DrawableGL.java:110)
   at org.lwjgl.opengl.SharedDrawable.makeCurrent(SharedDrawable.java:47)
   at engine.gl.GLThread.run(GLThread.java:60)

Quote
org.lwjgl.LWJGLException: GL11 not supported
   at org.lwjgl.opengl.ContextCapabilities.initAllStubs(ContextCapabilities.java:5806)
   at org.lwjgl.opengl.ContextCapabilities.<init>(ContextCapabilities.java:6240)
   at org.lwjgl.opengl.GLContext.useContext(GLContext.java:374)
   at org.lwjgl.opengl.ContextGL.makeCurrent(ContextGL.java:195)
   at org.lwjgl.opengl.DrawableGL.makeCurrent(DrawableGL.java:110)
   at org.lwjgl.opengl.SharedDrawable.makeCurrent(SharedDrawable.java:47)
   at engine.gl.GLThread.run(GLThread.java:60)

Creating a simple test program to reproduce the problem failed as usual...

Myomyomyo.
Pages: [1]
  ignore  |  Print  
 
 

 
Ecumene (110 views)
2017-09-30 02:57:34

theagentd (144 views)
2017-09-26 18:23:31

cybrmynd (245 views)
2017-08-02 12:28:51

cybrmynd (241 views)
2017-08-02 12:19:43

cybrmynd (240 views)
2017-08-02 12:18:09

Sralse (254 views)
2017-07-25 17:13:48

Archive (872 views)
2017-04-27 17:45:51

buddyBro (1016 views)
2017-04-05 03:38:00

CopyableCougar4 (1573 views)
2017-03-24 15:39:42

theagentd (1373 views)
2017-03-24 15:32:08
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
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!