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Author Topic: 80kb 1024x768 jpeg backdrop draws 2megs of RTG mem???  (Read 2395 times)

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Offline AmigazTopic starter

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80kb 1024x768 jpeg backdrop draws 2megs of RTG mem???
« on: March 17, 2007, 05:29:28 PM »
Have had some Warp3D problems recently but discovered that the cause has been that I'm using a wallpaper on my desktop, the size and complexety doesn't seem to matter..it eats 2 megs of my RTG memory which results in that no Warp3D stuff will run
Without a backdrup I have almost 5 megs free mem according to availp96 and with an active backdrop it drops to 2.5 megs

This is ridiculous  :crazy:
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Offline AmigazTopic starter

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Re: 80kb 1024x768 jpeg backdrop draws 2megs of RTG mem???
« Reply #1 on: March 17, 2007, 05:47:39 PM »
Quote

Thomas wrote:

1024 x 768 x 3 = 2,359,296 Bytes (2.25 MB)

JPEG file size does not matter. In memory the gfx data has to be uncompressed in order to be displayed.

Bye,
Thomas


Thanks for the tech. info, Thomas  :-)

A1200+Mediator=8mb RTG memory = sucks!  :-(
-------------------------------------------------------------------
Amiga 4000T - A3640 '040
Amiga 4000 - CS MKIII
Amiga 1200 - Blizzard 1230 MKIV
Amiga 1200 - Stock
Amiga CD32 - TF360
A bunch of ol' A500's
 

Offline AmigazTopic starter

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Re: 80kb 1024x768 jpeg backdrop draws 2megs of RTG mem???
« Reply #2 on: March 17, 2007, 06:18:13 PM »
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keropi wrote:
mediator eh?  :-P  :-P  :-P


arghhh...gimme a DCE BPPC  :pissed:
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Amiga 4000T - A3640 '040
Amiga 4000 - CS MKIII
Amiga 1200 - Blizzard 1230 MKIV
Amiga 1200 - Stock
Amiga CD32 - TF360
A bunch of ol' A500's
 

Offline AmigazTopic starter

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Re: 80kb 1024x768 jpeg backdrop draws 2megs of RTG mem???
« Reply #3 on: March 17, 2007, 06:44:11 PM »
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adolescent wrote:
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AMIGAZ wrote:
A1200+Mediator=8mb RTG memory = sucks!  :-(


Why not turn on the MMU and use all the memory?


Then Warp3D PPC stuff won't run..  :-(
-------------------------------------------------------------------
Amiga 4000T - A3640 '040
Amiga 4000 - CS MKIII
Amiga 1200 - Blizzard 1230 MKIV
Amiga 1200 - Stock
Amiga CD32 - TF360
A bunch of ol' A500's
 

Offline AmigazTopic starter

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Re: 80kb 1024x768 jpeg backdrop draws 2megs of RTG mem???
« Reply #4 on: March 17, 2007, 09:53:22 PM »
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adolescent wrote:
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AMIGAZ wrote:

Then Warp3D PPC stuff won't run..  :-(


Bummer.  I guess no background for you.  :-D


 :boohoo:   :-D

Life can be a {bleep}  ;-)
-------------------------------------------------------------------
Amiga 4000T - A3640 '040
Amiga 4000 - CS MKIII
Amiga 1200 - Blizzard 1230 MKIV
Amiga 1200 - Stock
Amiga CD32 - TF360
A bunch of ol' A500's
 

Offline AmigazTopic starter

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Re: 80kb 1024x768 jpeg backdrop draws 2megs of RTG mem???
« Reply #5 on: March 17, 2007, 09:54:16 PM »
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itix wrote:
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No, it's perfectly normal. Of course, the alternative is that the image is stored in Fast RAM and freshly exposed bits of it copied to the workbench screen's framebuffer as you move windows etc around.


But is it good idea waste 1/4 of precious VRAM to the image?


Yeah, glad I have an A4000 mediator system too which I have 16mb to play with instead of 8  ;-)
-------------------------------------------------------------------
Amiga 4000T - A3640 '040
Amiga 4000 - CS MKIII
Amiga 1200 - Blizzard 1230 MKIV
Amiga 1200 - Stock
Amiga CD32 - TF360
A bunch of ol' A500's