DDS file options for DirectX

SysAdm · 08-24-2003, 09:46 AM

Hey everyone... new guy here...

I've been working with 3D for sometime now... I mainly use a program called Blender. It's FREE and can run with the big dogs...

Anyways... I was toying around with some .dds files and have a question for anyone who has created similiar works as Jim's Aquariums... I'm trying to figure out the .dds options and have attached a screen shot of the options box... need to know what options will work.

I have saved some .dds images with various options, but I get wrong results... There is so many choices for a .dds file, I'd thought I'd ask....

Thanks...
Michael
aka... ____SysAdm

Jim Sachs · 08-24-2003, 10:45 AM

I only use DXT1 and DXT3.

feldon34 · 08-24-2003, 12:39 PM

Explicit Alpha (DXT3)
No MIP maps

You will likely have to flip over the texture in your program before using it.

Jim Sachs · 08-24-2003, 02:57 PM

DX6 flips the texture, DX8 does not. (Just to make conversion from DX6 to DX8 as hard as possible.)

feldon34 · 08-24-2003, 03:09 PM

So THAT'S why... I couldn't figure that out.

SysAdm · 08-25-2003, 10:05 AM

Thanks for your replies... just starting to play around with Microsoft's DirectX... amazing capabilities!!

Hats off to your work Jim... maybe someday I can contribute...

My 3D gallery (Blender only)... http://centralsource.com/michael

Thanks again...

____SysAdm

Marian Nichols · 08-25-2003, 01:47 PM

I thought them quite well done, my favorite is;
Light viewing
Others I really like;
moon night
blender never dies
May I borrow to use as wallpaper, and I promise for nothing else.

SysAdm · 08-26-2003, 09:06 PM

Hey Jim, one last question... what application are you (or should I ) use to create a DXT3 correctly with Alpha channel...

I'm using Adobe Photoshop with the DDT plugin, but getting weird results... my DXT1's are working fine, but my DXT3 are not utilizing the Alpha channel correctly...

Thanks again...

____SysAdm

Jim Sachs · 08-26-2003, 11:28 PM

I use DXTex, a utility in the DirectX Software Development Kit.

SysAdm · 08-27-2003, 09:06 AM

I have just downloaded the SDK... let's see what happens...

Thanks again...
____SysAdm

feldon34 · 08-27-2003, 01:36 PM

Getting DirectX 8 to display a properly alpha-channeled DXT3 texture requires a few directives that are non-obvious and not documented anywhere within DirectX 8 SDK examples. If you are getting the textures, but the alpha channel is being ignored, lemme know and I'll paste the code.

08-24-2003, 09:46 AM	#1
SysAdm Registered Join Date: Aug 2003 Location: Sunny Florida Posts: 6	DDS file options for DirectX Hey everyone... new guy here... I've been working with 3D for sometime now... I mainly use a program called Blender. It's FREE and can run with the big dogs... Anyways... I was toying around with some .dds files and have a question for anyone who has created similiar works as Jim's Aquariums... I'm trying to figure out the .dds options and have attached a screen shot of the options box... need to know what options will work. I have saved some .dds images with various options, but I get wrong results... There is so many choices for a .dds file, I'd thought I'd ask.... Thanks... Michael aka... ____SysAdm I'd rather be rendering...

08-24-2003, 10:45 AM	#2
Jim Sachs Developer Join Date: Dec 2000 Location: Southern Oregon Posts: 9,774	I only use DXT1 and DXT3. Jim Sachs Creator of SereneScreen Aquarium

08-24-2003, 12:39 PM	#3
feldon34 Forum Administrator Join Date: Dec 2000 Location: Rock Hill, SC Posts: 10,938	Explicit Alpha (DXT3) No MIP maps You will likely have to flip over the texture in your program before using it. "Journalism is printing what someone else does not want printed. Everything else is public relations." - George Orwell "If voting changed anything, they'd make it illegal." - Emma Goldman

08-24-2003, 02:57 PM	#4
Jim Sachs Developer Join Date: Dec 2000 Location: Southern Oregon Posts: 9,774	DX6 flips the texture, DX8 does not. (Just to make conversion from DX6 to DX8 as hard as possible.) Jim Sachs Creator of SereneScreen Aquarium

08-24-2003, 03:09 PM	#5
feldon34 Forum Administrator Join Date: Dec 2000 Location: Rock Hill, SC Posts: 10,938	So THAT'S why... I couldn't figure that out. "Journalism is printing what someone else does not want printed. Everything else is public relations." - George Orwell "If voting changed anything, they'd make it illegal." - Emma Goldman

08-25-2003, 10:05 AM	#6
SysAdm Registered Join Date: Aug 2003 Location: Sunny Florida Posts: 6	Thanks!!! Thanks for your replies... just starting to play around with Microsoft's DirectX... amazing capabilities!! Hats off to your work Jim... maybe someday I can contribute... My 3D gallery (Blender only)... http://centralsource.com/michael Thanks again... ____SysAdm I'd rather be rendering...

08-25-2003, 01:47 PM	#7
Marian Nichols ~Author~ Join Date: Apr 2003 Location: Rocky Mount, NC Posts: 7,429	I thought them quite well done, my favorite is; Light viewing Others I really like; moon night blender never dies May I borrow to use as wallpaper, and I promise for nothing else. Write paranormal mysteries. Six books so far.

08-26-2003, 09:06 PM	#8
SysAdm Registered Join Date: Aug 2003 Location: Sunny Florida Posts: 6	DXT3 application? Hey Jim, one last question... what application are you (or should I ) use to create a DXT3 correctly with Alpha channel... I'm using Adobe Photoshop with the DDT plugin, but getting weird results... my DXT1's are working fine, but my DXT3 are not utilizing the Alpha channel correctly... Thanks again... ____SysAdm I'd rather be rendering...

08-26-2003, 11:28 PM	#9
Jim Sachs Developer Join Date: Dec 2000 Location: Southern Oregon Posts: 9,774	I use DXTex, a utility in the DirectX Software Development Kit. Jim Sachs Creator of SereneScreen Aquarium

08-27-2003, 09:06 AM	#10
SysAdm Registered Join Date: Aug 2003 Location: Sunny Florida Posts: 6	I have just downloaded the SDK... let's see what happens... Thanks again... ____SysAdm I'd rather be rendering...

08-27-2003, 01:36 PM	#11
feldon34 Forum Administrator Join Date: Dec 2000 Location: Rock Hill, SC Posts: 10,938	Getting DirectX 8 to display a properly alpha-channeled DXT3 texture requires a few directives that are non-obvious and not documented anywhere within DirectX 8 SDK examples. If you are getting the textures, but the alpha channel is being ignored, lemme know and I'll paste the code. "Journalism is printing what someone else does not want printed. Everything else is public relations." - George Orwell "If voting changed anything, they'd make it illegal." - Emma Goldman