Re: [JAVA2D] How to detect hardware acceleration?

I don't believe this is a bug. This is a performance limitation of non-opaque windows on Windows platform - there's nothing we can do about it. Non-opaque windows were not originally intended for windows with high update rate. Every update means that we have to update whole window

Re: [JAVA2D] How to detect hardware acceleration?

[EMAIL PROTECTED] wrote: I don't believe this is a bug. This is a performance limitation of non-opaque windows on Windows platform - there's nothing we can do about it. Non-opaque windows were not originally intended for windows with high update rate. Every update means that we have to update

Re: [JAVA2D] How to detect hardware acceleration?

To let the user decide to enable such an option is OK. However I think possibly there still exists a performance bug. The test case below causes an avererage of 5% CPU utilization for opaque window and 50% CPU utilization for non-opaque windows even if the animated panel is placed on an opaque

Re: [JAVA2D] How to detect hardware acceleration?

even if the animated panel is placed on an opaque panel This doesn't matter. If the window is made non-opaque, then every component inside that window will have to pay the price. I don't believe this is a bug. This is a performance limitation of non-opaque windows on Windows

Re: [JAVA2D] How to detect hardware acceleration?

Thanks for the info. Wolfgang [Message sent by forum member 'wzberger' (wzberger)] http://forums.java.net/jive/thread.jspa?messageID=287672 === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the

Re: [JAVA2D] How to detect hardware acceleration?

Hardware info for the older machine: [code] [I] OS Version = OS_WINXP Pro [I] CheckAdaptersInfo [I] -- [I] Adapter Ordinal : 0 [I] Adapter Handle : 0x10001 [I] Description : NVIDIA GeForce2 MX/MX 400 (Microsoft Corporation) [I] GDI Name, Driver : \\.\DISPLAY1, nv4_disp.dll

Re: [JAVA2D] How to detect hardware acceleration?

That is indeed a rather old board. I think it may not be the board that's slow but the bus between the cpu and vram - since non-opaque window send a bunch of data on every repaint from system memory to vram, the bus speed is very important. The only suggestion I have is to provide

Re: [JAVA2D] How to detect hardware acceleration?

[EMAIL PROTECTED] wrote: Java 6u10 provides a method to modify widow opacity. On older machines, I assume without hardware acceleration, setting a window to the non-opaque mode leads to a very high CPU utilization. HW acceleration is actually disabled for the window with opacity 1.0 on

Re: [JAVA2D] How to detect hardware acceleration?

Thanks for the info. The problem is that my test app works fine on a modern machine with Vista and non-opaque window mode. On an older machine with XP the app is too slow so the additional eye candy which is provided by the non-opaque window mode should not appear. That's why a auto-detection

Re: [JAVA2D] How to detect hardware acceleration?

[EMAIL PROTECTED] wrote: Thanks for the info. The problem is that my test app works fine on a modern machine with Vista and non-opaque window mode. On an older machine with XP the app is too slow so the additional eye candy which is provided by the non-opaque window mode should not appear.