🔒 Locked

Help with porting from DirectDraw to Direct3D

Started by sporedude May 24, 2006 at 9:51 AM 5 replies 1.7k views

Original Post

May 24, 2006 at 9:51 AM

Hi all, I am trying to port my game from using DirectDraw to using Direct3D. Now the problem that I have been having is that I need to make all my graphics of resolutions powers of 2 (say and 800*600 image needs to be changed to 1024*1024 image). Someone mentioned that it might just be that the graphics card on my machine is old (which is true-- it is like 3 yrs old) and thus the version of Direct3D that I am using(DirectX SDK-Dec. 2004) doesnot support the hardware completely, thus requiring me to change all the graphics. I was wondering if someone could help me so that I can use rectangular images which are not powers of 2. Else I would need to change all my graphics. cheers

u235

May 24, 2006 at 10:51 AM

It's not that your graphics need to be powers of two, but your textures do. So what you do is put all your graphics into one image that is a power of two. Then load that one image as a texture. When you go to texture your quads, just use the appropriate texture coordinates of the image you want to use. Hope that helps.

-AJ

sporedude

May 24, 2006 at 11:27 AM

Thanks. yeah it did help

cheers

Jonas B

May 24, 2006 at 12:13 PM

You can use a texture atlas tool to help create the textures, such as
http://developer.nvidia.com/object/texture_atlas_tools.html
There are also command-line tools that can be integrated into your build.

sporedude

Jun 9, 2006 at 12:50 PM

hi all

I tried using the NVidia's AtlasCreationTool. Now again the tool requires ur textures to be powers of 2. are there any tools that are useful to say make a non-power of 2 texture to a texture which is power of 2 and then we could use the Atlas Creation tool to add all the textures to one single atlas. if so please let me know.

cheers

Jonas B

Jun 9, 2006 at 2:35 PM

Yup, I've got one (in Endogine). Contact me after the weekend if you're interested, and I'll mail the latest version: list(at)jobe(dot)nu

sporedude

Jun 12, 2006 at 6:54 AM

hey that would be great if you could help me with it.

cheers

Topic Locked

This topic has been locked by a moderator. New replies are not allowed.