diff options
Diffstat (limited to 'src/jogl/classes/javax/media/opengl')
-rw-r--r-- | src/jogl/classes/javax/media/opengl/GLContext.java | 49 |
1 files changed, 44 insertions, 5 deletions
diff --git a/src/jogl/classes/javax/media/opengl/GLContext.java b/src/jogl/classes/javax/media/opengl/GLContext.java index c039112c1..cc6b40f54 100644 --- a/src/jogl/classes/javax/media/opengl/GLContext.java +++ b/src/jogl/classes/javax/media/opengl/GLContext.java @@ -128,6 +128,7 @@ public abstract class GLContext { protected int ctxMinorVersion; protected int ctxOptions; protected String ctxVersionString; + private int currentSwapInterval; protected void resetStates() { ctxMajorVersion=-1; @@ -137,6 +138,7 @@ public abstract class GLContext { attachedObjectsByString.clear(); attachedObjectsByInt.clear(); contextHandle=0; + currentSwapInterval = -1; } /** @@ -621,17 +623,54 @@ public abstract class GLContext { return isGL2GL3() || isGLES2() ; } - public final void setSwapInterval(int interval) { + /** + * Set the swap interval if the current context. + * @param interval Should be ≥ 0. 0 Disables the vertical synchronisation, + * where ≥ 1 is the number of vertical refreshes before a swap buffer occurs. + * A value < 0 is ignored. + * @return true if the operation was successful, otherwise false + * + * @throws GLException if the context is not current. + */ + public final boolean setSwapInterval(int interval) throws GLException { if (!isCurrent()) { throw new GLException("This context is not current. Current context: "+getCurrent()+", this context "+this); } - setSwapIntervalImpl(interval); + if(0<=interval) { + if( setSwapIntervalImpl(interval) ) { + currentSwapInterval = interval; + return true; + } + } + return false; } - protected void setSwapIntervalImpl(int interval) { /** nop per default .. **/ } - protected int currentSwapInterval = -1; // default: not set yet .. - public int getSwapInterval() { + protected boolean setSwapIntervalImpl(int interval) { + return false; + } + /** Return the current swap interval. + * <p> + * If the context has not been made current at all, + * the default value <code>-1</code> is returned. + * </p> + * <p> + * The default value for a valid context is <code>1</code> for + * an EGL based profile (ES1 or ES2) and <code>-1</code> (undefined) + * for desktop. + * </p> + */ + public final int getSwapInterval() { + if(-1 == currentSwapInterval && this.isGLES()) { + currentSwapInterval = 1; + } return currentSwapInterval; } + protected final void setDefaultSwapInterval() { + if(this.isGLES()) { + currentSwapInterval = 1; + } else { + currentSwapInterval = -1; + } + } public final boolean queryMaxSwapGroups(int[] maxGroups, int maxGroups_offset, int[] maxBarriers, int maxBarriers_offset) { |