[1.10][DX11] Cubic .dds don't work. Bug?

[mkultra333]

I have a cube map called "menuspace." It is defined in the material as either a tga or dds, since I have both. I comment out one or the other to swap.

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			texture_unit 
            {
				filtering none
// I uncomment the textures as I test them
				//cubic_texture menuspace.dds combinedUVW
				//cubic_texture menuspace.tga combinedUVW
            }

If I use .tga it works fine. In the log, I see it load like this.

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14:30:37: Texture: menuspace.tga: Loading 6 faces(PF_R8G8B8,1024x1024x1) with 5 generated mipmaps from multiple Images. Internal format is PF_A8B8G8R8,1024x1024x1.
14:30:37: D3D11: Loading Cube Texture, base image name : 'menuspace.tga' with 5 mip map levels

However .dds (compressed as dxt1) won't load, or only loads the first image, depending on what I try. Here's the log.

14:35:24: OGRE EXCEPTION(6:FileNotFoundException): Cannot locate resource menuspace.dds in resource group QuickResource or any other group. in ResourceGroupManager::openResource at C:\Ogre\Ogre_1_10\OgreMain\src\OgreResourceGroupManager.cpp (line 757)
14:35:24: Error loading texture menuspace.dds. Texture layer will be blank. Loading the texture failed with the following exception: OGRE EXCEPTION(6:FileNotFoundException): Cannot locate resource menuspace.dds in resource group QuickResource or any other group. in ResourceGroupManager::openResource at C:\Ogre\Ogre_1_10\OgreMain\src\OgreResourceGroupManager.cpp (line 757)

Have tried the alternate naming method in the material.

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			texture_unit 
            {
				filtering none
// I uncomment the textures as I test them.
				//cubic_texture menuspace_fr.dds menuspace_bk.dds menuspace_lf.dds menuspace_rt.dds menuspace_up.dds menuspace_dn.dds combinedUVW
				//cubic_texture menuspace_fr.tga menuspace_bk.tga menuspace_lf.tga menuspace_rt.tga menuspace_up.tga menuspace_dn.tga combinedUVW

            }

This doesn't work at all for the .tga, it's messing up the name and trying to load " menuspace_fr_rt.tga" I get the following:

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14:44:13: OGRE EXCEPTION(6:FileNotFoundException): Cannot locate resource menuspace_fr_rt.tga in resource group QuickResource or any other group. in ResourceGroupManager::openResource at C:\Ogre\Ogre_1_10\OgreMain\src\OgreResourceGroupManager.cpp (line 757)
14:44:13: Error loading texture menuspace_fr.tga. Texture layer will be blank. Loading the texture failed with the following exception: OGRE EXCEPTION(6:FileNotFoundException): Cannot locate resource menuspace_fr_rt.tga in resource group QuickResource or any other group. in ResourceGroupManager::openResource at C:\Ogre\Ogre_1_10\OgreMain\src\OgreResourceGroupManager.cpp (line 757)

Using .dds, it doesn't report any error but only one of the images draws, possibly it's using the wrong base name.

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14:46:22: Texture: menuspace_fr.dds: Loading 1 faces(PF_DXT1,1024x1024x1) with 3 generated mipmaps from Image. Internal format is PF_DXT1,1024x1024x1.
14:46:22: D3D11: Loading Cube Texture, base image name : 'menuspace_fr.dds' with 3 mip map levels

So only "cubic_texture menuspace.tga combinedUVW" seems to work.

Edit: Just tried DX9, it crashes and says:

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15:06:57: OGRE EXCEPTION(3:RenderingAPIException): Can't create cube texture: Unspecified error

 in D3D9Texture::_loadCubeTex at C:\Ogre\Ogre_1_10\RenderSystems\Direct3D9\src\OgreD3D9Texture.cpp (line 574)

So are you just not supposed to use .dds in cubemaps?

[dark_sylinc]

IIRC you're supposed to use 'texture' and ogre will figure out it's a cubemap from the dds.
Cubic_texture is for manually specifying a cubemap out of many different files

[mkultra333]

Hmm... the documentation for 1.8 says to use "cubic_texture" and then either define a single texture that it will be used as the base name for loading 6 different textures, or by naming all six individually.
I've just noticed you can alternately use "texture" and then define the type as "cubic".

http://www.ogre3d.org/docs/manual/manua ... ml#texture

But either way seems to require you specify cubic texturing. Maybe the docs are out of date for 1.10. But then this still doesn't explain the errors, why "cubic_texture menuspace.tga combinedUVW" works but not "cubic_texture menuspace.dds combinedUVW"

Does .dds have some specific cubemap format? I was unaware of that, I'll have to see what I can find. It isn't too important now, I've worked around it with a plain old cube with the .dds textures stuck on it. It was for a distant skybox, although elsewhere I have a .tga cubic reflection map.

[dark_sylinc]

These interfaces are old, back from when there was a D3D7 RenderSystem. Microsoft had just licensed S3TC (DXT compression) from S3 to be used with their new dds format.

Traditionally you'd create a cubemap out of 6 separate files, and that's what these interfaces would help you to do (i.e. either you adopt Ogre's suffix naming convention so that all 6 textures are loaded from a base name; or you provide them explicitly).

Then the dds format came with built-in cubemap support. You can literally store all 6 images, including their mipmaps, inside the DDS; and thus Ogre is capable of deducing you're loading a cubemap if the dds header says it's a cubemap. But if you use "cubic_texture" (which predates dds support), you'll be instructing Ogre to load 6 separate files.

You can try "texture myFile.dds cubic" and "texture myFile.dds". One of those two should work.

[mkultra333]

Ok, thanks. I'll have to find out how to create the .dds cubemap in the proper single image format. I wonder if nvcompress does it...

[Kojack]

AMD have Cubemapgen: http://developer.amd.com/tools-and-sdks ... ubemapgen/
It can convert to and from dds cube maps.

Nvidia's photoshop plugin has cube maps too: https://developer.nvidia.com/nvidia-tex ... -photoshop

The Direct X sdk texture tool can also manually load images onto faces of a cube map and save it out as dds.
(I use it to make custom mip map levels too, like colour coded ones for debugging texture resolution)

[mkultra333]

Thanks. I found CubeMapGen the other day, I think I had it years ago but have changed computer since and forgot it.

I usually avoid the Nvidia plugin, although I do have it. At one point I was having some problems with it, it was making buggy .dss textures under some circumstances, or some software I used had problems with with its textures, I can't remember. I mostly use nvcompress.exe with a batch file to make my textures, though it's pretty old now. Unfortunately it doesn't seem to have a cubemap option, but CubeMapGen looks good.