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DarkBASIC Professional Discussion / Is there a grid limit for a matrix?

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Firesea
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Posted: 8th May 2003 16:50
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I am using a matrix to plot data points(1 point per matrix vertex would be ideal)but..

When I construct a matrix with more than 130x130 grids(size doesn't matter) the grid is drawn upto a certain point then stops. Example below shows 2 grids on top of each other - note how the 200x200 grid stops about 1/3 the way.

Anyway to correct this? Hardware limitation? Does the same on several computers.

I'm using 4 matrixs now with 100x100 grids but it's a pain.

Thanks
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Fluffy Paul
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Posted: 8th May 2003 19:08
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What is the camera doing? Are the matrixes being cut off because parts are out of camera range? Try moving the camera.

Ending a sentence with a French word is so passé
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Firesea
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Posted: 8th May 2003 19:22
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The code I included allows you to use the mouse to fly over the matrix - left button move forward, right back,

No. I wish that was the case.
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spooky
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Posted: 8th May 2003 19:27
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I had this problem as well on big matrices. I think there is some sort of limit on number of tiles in a matrix. Having loads of smaller matrices seems to be acceptable though.

What is maximum size then? When I get home I will find out!

Gronda, Gronda
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Firesea
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Posted: 8th May 2003 21:36
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Rich,

How about it? Can you shed some light on this? Is there a work around? Is this corrected in patch 5?

Is it hardware dependant? I'm writing enormous amounts of code on top of using 4 matrix and would love to use 1 matrix instead.

Thanks
Firesea
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IanM
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Posted: 8th May 2003 22:31
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I know that there is a limit on the number of vertices an object can have, so it may be the case that matrixes have the same limit and a 130x130 matrix hits this limit.
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spooky
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Posted: 8th May 2003 23:26
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And the magic answer is .... 16384 (128*128)

Any tiles past that number are just not rendered! Pity really.

So as long as total tiles is less than or equal 16384 you are safe.

Gronda, Gronda
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IanM
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Posted: 9th May 2003 00:09
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That sounds about the same as objects then. They're limited to 65536 vertices.

So with a vertice for each corner of each tile that comes to the same number.
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Ian T
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Posted: 9th May 2003 00:43
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That's a pretty low vertex limit...

--Mouse

Famous Fighting Furball
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IanM
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Posted: 9th May 2003 00:48
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Is it? Apart from matrixes, I've not heard any problems caused by it.

Anyway, I think this is a limit that may soon to be lifted.
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Firesea
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Posted: 9th May 2003 03:07
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Ian,

Care to elaborate on your insight about lifting the limit? Patch 5 maybe???
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IanM
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Posted: 9th May 2003 10:31
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No, I am not able to elaborate. My lips are sealed
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mhack
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Posted: 9th May 2003 17:33
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Why not use DWord instead of word for vertixes number?

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Dave J
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Posted: 9th May 2003 17:55
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Lol, damn you Ian!!!

"Computers are useless they can only give you answers."
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Andy Igoe
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Posted: 9th May 2003 17:56
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I can run a matrix 2000x2000 in DBPro using native commands, I do this with a much smaller matrix and dynamic content shuffling. This not only renders faster but it allows for the matrix to be animated without huge slowdown.

See my Work in Progress page for Project NFP to download an example of a 2000x2000 animated matrix. Or for a more complete look at a massive matrix demo look at my Terrascape page.

Pneumatic Dryll
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IanM
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Posted: 10th May 2003 02:48
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Exeat: Ah, abuse huh? I've helped confirm what the problem seems to be, and PD has given a workaround ... what more do you want from me? Blood?
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Ian T
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Posted: 10th May 2003 20:33
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I wouldn't wonder

--Mouse

Famous Fighting Furball
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IanM
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Posted: 10th May 2003 21:39
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Hah, I remember you when you had some respect for your elders
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Ian T
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Posted: 10th May 2003 21:50
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When I left you, I was but the learner; now I am the master.

--Mouse

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David T
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Posted: 10th May 2003 21:57
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I'm up to 1000 with no problems

You are the th person to view this signature.
Programmers don't die, they just Gosub without return....
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