[Unity 4] 3D texture with mipmaps and crashes?

Unity Engine
1

I’m trying to get 3D textures to work with mipmap, my 3D textures work just fine without mipmap but simply changing

tex = new Texture3D(size, size, itemscount, TextureFormat.ARGB32, false);
to
tex = new Texture3D(size, size, itemscount, TextureFormat.ARGB32, true);
causes a unity hard crash (even if i divide the resolution by 4 to make sure i’m not just going over a memory limit)
This is with the latest unity 4
It also crashes in a different way than usual as it doesn’t even bring the unity bug reporter!

2

Sorry,

As I have no experience with that issue, but if you weren’t aware you can bring up the bug reporter from the menus:

‘Help’ >> ‘Report a Bug’.

3

Already bug reported it, but wanted it on the forum too as sometimes you report a bug and posting it in the forum someone will let you know that it isn’t a bug and you totally messed up, so since there’s a param to explicitely say wether you want it mipmapped or not, i’m assuming it’s misuse on my end as i can’t see such a large bug making it throught testing.

4

Bumping because I’m having a similar problem with 4.1.5 (d3d11). It crashed for me once, but usually I will just get undefined contents in all levels > 0 when I try to set them. I’m not getting any errors, and I’m calling Apply(false).

Did you ever resolve this?

Cheers

5

Just a quick not helpful answer since i wouldn’t want you to wait, no iirc i never really fixed it, i did get 3D textures working just fine but it always failed past a certain resolution, and at a lower resolution it failed randomly.
I do remember i had something going but i can’t remember if i stuck to 3D textures on it or not, if i find the code again i’ll update here.

6

Do you have a link to the bug report?

Here’s the crash I’m seeing:

In TexturesD3D11::UploadTexture3D, ‘srcSlice’ points to invalid memory, and is used as the source for a memcpy. The locals are:

+		this	0x00000020 {m_Samplers={ size=??? } m_Textures={rep={hash={...} equals=equal_to get_key={...} ...} } ...}	TexturesD3D11 *
+		tid	{m_ID=1235 }	TextureID
+		srcData	0x0e925db4 "ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ...	unsigned char *
		width	64	int
		height	64	int
		depth	16	int
		format	4	unsigned long
		mipCount	7	int
		uploadFlags	1	unsigned long
+		ctx	0x02112d94 {...}	ID3D11DeviceContext *
		maxLevel	6	int
+		rgba	0x0b246fbc "ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ...	unsigned char *
+		uploadFormat	{unityformat=4 d3dformat=DXGI_FORMAT_R8G8B8A8_UNORM (28) sRGBD3dformat=DXGI_FORMAT_R8G8B8A8_UNORM_SRGB (29) }	const FormatDesc11 
+		it	{ht=0x19c87078 {hash={...} equals=equal_to get_key={...} ...} pos=0x19c8ba70 ({m_ID=4261281277 }, {m_Texture=0xdeadbeef {...} m_SRV=0xdeadbeef {...} m_UAV=0xdeadbeef {...} ...}) ...}	dense_hashtable_iterator<std::pair<TextureID const ,TexturesD3D11::smile:3D11Texture>,TextureID,TextureIDHashFunctor,dense_hash_map<TextureID,TexturesD3D11::smile:3D11Texture,TextureIDHashFunctor,std::equal_to<TextureID>,stl_allocator<std::pair<TextureID const ,TexturesD3D11::smile:3D11Texture>,49,4> >::SelectKey,std::equal_to<TextureID>,stl_allocator<std::pair<TextureID const ,TexturesD3D11::smile:3D11Texture>,49,4> >
+		texture	0x1fa1df90 <Information not available, no symbols loaded for d3d11.dll>	ID3D11Texture3D *
+		viewDesc	{Format=DXGI_FORMAT_R8G8B8A8_UNORM (28) ViewDimension=D3D11_SRV_DIMENSION_TEXTURE3D (8) Buffer={FirstElement=...} ...}	D3D11_SHADER_RESOURCE_VIEW_DESC
+		srView	0x0b246fbc {...}	ID3D11ShaderResourceView *
+		desc	{Width=64 Height=64 Depth=16 ...}	D3D11_TEXTURE3D_DESC
		level	1	int
+		dstSlice	0x0b246fbc "ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ...	unsigned char *
+		srcSlice	0x0ea25db4 <Error reading characters of string.>	const unsigned char *

And the full call-stack is:

 	Unity.exe!memcpy(unsigned char * dst, unsigned char * src, unsigned long count) Line 185	Unknown
 	Unity.exe!prcore::Surface::BlitImage(const prcore::Surface  source, prcore::Surface::BlitMode mode) Line 4077	C++
 	Unity.exe!SwizzleToRGBA(const unsigned char * src, unsigned char * dst, int width, int height, int dstPitch, unsigned long format) Line 20	C++
>	Unity.exe!TexturesD3D11::UploadTexture3D(TextureID tid, unsigned char * srcData, int width, int height, int depth, unsigned long format, int mipCount, unsigned long uploadFlags) Line 713	C++
 	Unity.exe!GfxDeviceD3D11::UploadTexture3D(TextureID texture, unsigned char * srcData, int srcSize, int width, int height, int depth, unsigned long format, int mipCount, unsigned long uploadFlags) Line 1579	C++
 	Unity.exe!GfxDeviceWorker::RunCommand(ThreadedStreamBuffer  stream) Line 762	C++
 	Unity.exe!GfxDeviceWorker::Run() Line 202	C++
 	Unity.exe!GfxDeviceWorker::RunGfxDeviceWorker(void * data) Line 174	C++
 	Unity.exe!Thread::RunThreadWrapper(void * ptr) Line 252	C++
 	kernel32.dll!7725850d()	Unknown
 	[Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]	
 	ntdll.dll!7747bf39()	Unknown
 	ntdll.dll!7747bf0c()	Unknown
7

No clue if it’s the same issue, but found the case number by digging in my mails and it was 498351
Also the issue wasn’t about 3D tex in the end i think but about a mono crash that happened after using a 3D tex when allocating a color array

8

Thanks. I’ll submit a new bug for this.