I'm pretty sure this is the right forum. This is the only forum where I know that the viewers would no how to use matrices!

I don't get it. I know matrices are used in shaders. I also know that it isn't just used for shaders, because entity.u,v, and material.scale are going to be abandoned because you can use matrices for this.

How do matrices work?

I'm sorry I can't give more info about specifically what I need to know, but I have no idea how it works!?

Please help.

Julian

YOU ARE SHADER PROGRAMMERS!!! SURELY YOU CAN EXPLAIN A BIT ABOUT MATRICES, OR DIRECT ME TO A SITE THAT EXPLAINS IT?

PLEASE!?

Julian

What do you want to know? About matrix in general or about how to work with them?

Quote:

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I'm sorry I can't give more info about specifically what I need to know, but I have no idea how it works!?

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Um... whatever you can tell me?

Mainly how to work with them, but I have no "general knowledge."

Thanks for whatever you can tell me, and thanks for the reply.

Julian

Probably start with the DX SDK. Can I just flip out an answer that will make it all make sense?? No, I can't, so I give you these:

http://www.drunkenhyena.com/cgi-bin/view_article.pl?article=15

http://tomsdxfaq.blogspot.com/2002_05_01_tomsdxfaq_archive.html

http://www.screel.de/direct3d.net/tutorials/tutorial2/first_steps_to_animation.html

Wow, THANKS!!!!

Julian

Thanks for the help guys! Those were good links, but...

I guess I need to wait till I learn about them at school. I just don't get it.

Thanks anyway guys,

Julian

Yeah. You may need high-level math to understand matrices before you get to learn shaders.

But you can do a search on Matrix in here...
http://www.google.com/search?hl=en&lr=lang_en&ie=UTF-8&oe=UTF-8&q=Matrix+Math+Tutorial

I hope this helps.

Some basic things about matrices:

• Matrices are like vectors of vectors, so they have rows and columns.
  
• You can use matrices for transforming vectors. You do this by multipling the matrix with the vector. This way you can move, scale or rotate vectors.
  
• If you multiply two matrices, the new matrix will combine the transformations of each matrix. So if you combine a rotation and scaling matrix, the vector will be rotated and scaled in one multiplication.
  
• By multipling with the inverse of a matrix, you can make that matrix undo.

That's very general info, hope that helps you.

Wow thanks!! That is very helpful!

Julian