Jump to content
  • Advertisement
Sign in to follow this  
Hunter_Ex

Updating part of buffer

This topic is 4849 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

hey i wants to only update a luttle part of my terrain buffer i thought i did correct with this code but

// the vertex buffer is create , dynamic memory and default creation

// as arguments
// and set like this for example
start = 5;
oiffset = 10;

VERTEX *data; 
DOUBLE size = sizeof(VERTEX);
Buffer->Lock(start*size,offset*size,(void**)&data,NULL);
memcpy(data,vertex,offset*size);
Buffer->Unlock();




but the results is really strange everything dissapear except those vertices thats behind the start vertice Image hosted by Photobucket.com plz help hunter_ex [Edited by - Hunter_Ex on August 11, 2005 9:03:32 PM]

Share this post


Link to post
Share on other sites
Advertisement
okay i waited some time now and i feel like getting an answer : ) ive tryed many stuff but if i NOT UPDATE(lock,copy,lock) the whole buffer i get really weird results

Share this post


Link to post
Share on other sites
Are you adding NEW data to the vertexbuffer, or are you changing existing data in the vertexbuffer?

If you're changing(Thus the latter case), remove the D3DLOCK_NOOVERWRITE. It tells the vertexbuffer you won't be changing existing data, so it continues drawing with the contents.

Toolmaker

Share this post


Link to post
Share on other sites
yea im changing the data... i tryed remove the NOOVERWRITE
and use NULL instead but same problem. :(

ill post a screenshot soon

EDIT image

Image hosted by Photobucket.com

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!