Filetype:MIP Texture Format - Revision history

DokkeFyxen at 22:04, 21 January 2025

2025-01-21T22:04:38Z

← Older revision		Revision as of 22:04, 21 January 2025
Line 55:		Line 55:
	MIP files uploaded to the game server are always flipped vertically.		MIP files uploaded to the game server are always flipped vertically.

	[[Category:File Formats\|I]]		[[Category:File Formats]]
	[[Category:LittleBigPlanet (PlayStation Portable) File Formats\|I]]		[[Category:LittleBigPlanet (PlayStation Portable) File Formats]]
			[[Category:Technical Pages]]

DokkeFyxen at 15:05, 22 June 2024

2024-06-22T15:05:04Z

← Older revision		Revision as of 15:05, 22 June 2024
Line 4:		Line 4:

	==Format==		==Format==
	A MIP file has no file magic, and can only be detected by blindly reading the header and performing some heuristics. It is stored within an [[~~Filetype~~:Encrypted PSP Container\|Encrypted PSP Container]].		A MIP file has no file magic, and can only be detected by blindly reading the header and performing some heuristics. It is stored within an [[{{ns:3010}}:Encrypted PSP Container\|Encrypted PSP Container]].

	=== Header<sup>[https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipHeader.cs]</sup> ===		=== Header<sup>[https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipHeader.cs]</sup> ===

Chunky104: Fixed broken link

2024-06-22T08:41:12Z

Fixed broken link

← Older revision		Revision as of 08:41, 22 June 2024
Line 4:		Line 4:

	==Format==		==Format==
	A MIP file has no file magic, and can only be detected by blindly reading the header and performing some heuristics. It is stored within an [[Encrypted PSP Container]].		A MIP file has no file magic, and can only be detected by blindly reading the header and performing some heuristics. It is stored within an [[Filetype:Encrypted PSP Container\|Encrypted PSP Container]].

	=== Header<sup>[https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipHeader.cs]</sup> ===		=== Header<sup>[https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipHeader.cs]</sup> ===

DokkeFyxen: DokkeFyxen moved page Level Part:MIP Texture Format to Filetype:MIP Texture Format without leaving a redirect

2024-06-19T17:33:23Z

DokkeFyxen moved page Level Part:MIP Texture Format to Filetype:MIP Texture Format without leaving a redirect

← Older revision	Revision as of 17:33, 19 June 2024
(No difference)

DokkeFyxen: DokkeFyxen moved page MIP Texture Format to Filetype:MIP Texture Format without leaving a redirect

2024-06-19T17:15:43Z

DokkeFyxen moved page MIP Texture Format to Filetype:MIP Texture Format without leaving a redirect

← Older revision	Revision as of 17:15, 19 June 2024
(No difference)

Beyley at 23:17, 9 January 2024

2024-01-09T23:17:11Z

← Older revision		Revision as of 23:17, 9 January 2024
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	{{WIP}}		{{WIP}}
	==About==		==About==
	MIP is a texture format used in [[LittleBigPlanet (PlayStation Portable)\|LittleBigPlanet Portable]].		MIP is the texture format used in [[LittleBigPlanet (PlayStation Portable)\|LittleBigPlanet Portable]].

	==Format==		==Format==
Line 28:		Line 28:
	\|}		\|}

	Only '4bpp' and '8bpp' are known to be valid bits per pixel values. It is currently unknown what 'Number of Blocks' and 'Texture mode' are used for. They can be ignored when reading and set to '2' and '1' respectively when writing. Alpha is either '0' or '1', representing a boolean value of whether or not the ~~image contains~~ alpha.		Only '4bpp' and '8bpp' are known to be valid bits per pixel values. It is currently unknown what 'Number of Blocks' and 'Texture mode' are used for. They can be ignored when reading and set to '2' and '1' respectively when writing. Alpha is either '0' or '1', representing a boolean value of whether or not to use the alpha information contained within the file.

	=== Color Lookup Table (CLUT) ===		=== Color Lookup Table (CLUT) ===

	The Color Lookup Table is a 16 (if 4bpp) or 256 (if 8bpp) entry table containing all the colors used in the image. Each entry is 4 bytes wide, using a simple RGBA8888 layout. Each entry is tightly packed. It is located at the offset specified in the header.		The Color Lookup Table is a 16 (if 4bpp) or 256 (if 8bpp) entry table containing all the colors used in the image. Each entry is 4 bytes wide, using a simple RGBA8888 layout. Each entry is tightly packed. It is located at the offset specified in the header. The alpha field of each entry does nothing if Alpha is set to 0 in the header, but the information is still there.
	{\| class="wikitable"		{\| class="wikitable"
	\|+ Color Entry		\|+ Color Entry

Jvyden: Grammar pass

2024-01-09T21:43:43Z

Grammar pass

← Older revision		Revision as of 21:43, 9 January 2024
Line 4:		Line 4:

	==Format==		==Format==
	A MIP file has no file magic, and can only be detected by heuristics. It is stored within an [[Encrypted PSP Container]].		A MIP file has no file magic, and can only be detected by blindly reading the header and performing some heuristics. It is stored within an [[Encrypted PSP Container]].

	=== Header<sup>[https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipHeader.cs]</sup> ===		=== Header<sup>[https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipHeader.cs]</sup> ===
Line 28:		Line 28:
	\|}		\|}

	Only 4bpp and 8bpp are known to be valid. It is unknown what Number of Blocks and Texture mode are used for~~, they~~ can be ignored when reading, and set to "2" and "1" respectively when writing. Alpha is "0" or "1", representing a boolean value of whether or not the image contains alpha.		Only '4bpp' and '8bpp' are known to be valid bits per pixel values. It is currently unknown what 'Number of Blocks' and 'Texture mode' are used for. They can be ignored when reading and set to '2' and '1' respectively when writing. Alpha is either '0' or '1', representing a boolean value of whether or not the image contains alpha.

	=== Color Lookup Table ===		=== Color Lookup Table (CLUT) ===

	The Color Lookup Table is a 16 (if 4bpp) or 256 (if 8bpp) entry table containing all the colors used in the image. Each entry is 4 bytes wide, using a simple RGBA8888 layout. Each entry is tightly packed. It is located at the offset specified in the header.		The Color Lookup Table is a 16 (if 4bpp) or 256 (if 8bpp) entry table containing all the colors used in the image. Each entry is 4 bytes wide, using a simple RGBA8888 layout. Each entry is tightly packed. It is located at the offset specified in the header.
Line 49:		Line 49:
	=== Image Data ===		=== Image Data ===

	Image data is stored uncompressed in the file at the offset specified in the header. In an 8bpp file, every byte is an index into the color lookup table, representing a single pixel. In a 4bpp file, every byte represents a two pixel horizontal strip, with the 4 least significant bits representing the color lookup table offset for the leftmost pixel, and the most significant 4 bits representing the color lookup table offset for the rightmost pixel. The game expects the image data to be swizzled<sup>[http://homebrew.pixelbath.com/wiki/PSP_texture_swizzling]</sup><sup>[https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipDecoder.cs#L29]</sup><sup>[https://github.com/ennuo/lbparc/blob/16ad36aa7f4eae2f7b406829e604082750f16fe1/src/resources/texture.js#L6]</sup>.		Image data is stored uncompressed in the file at the offset specified in the header. In an 8bpp file, every byte is an index into the color lookup table, representing a single pixel. In a 4bpp file, every byte represents a two pixel horizontal strip, with the 4 least significant bits representing the color lookup table offset for the leftmost pixel, and the most significant 4 bits representing the color lookup table offset for the rightmost pixel.

	MIP files uploaded to the ~~PSP UGC~~ server are always flipped vertically.		In all cases, the game expects the image data to be swizzled<sup>[http://homebrew.pixelbath.com/wiki/PSP_texture_swizzling]</sup><sup>[https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipDecoder.cs#L29]</sup><sup>[https://github.com/ennuo/lbparc/blob/16ad36aa7f4eae2f7b406829e604082750f16fe1/src/resources/texture.js#L6]</sup>.

			MIP files uploaded to the game server are always flipped vertically.

	[[Category:File Formats\|I]]		[[Category:File Formats\|I]]
	[[Category:LittleBigPlanet (PlayStation Portable) File Formats\|I]]		[[Category:LittleBigPlanet (PlayStation Portable) File Formats\|I]]

Beyley: Add basic information about the format

2024-01-09T20:33:53Z

Add basic information about the format

New page

{{WIP}}
==About==
MIP is a texture format used in [[LittleBigPlanet (PlayStation Portable)|LittleBigPlanet Portable]].

==Format==
A MIP file has no file magic, and can only be detected by heuristics. It is stored within an [[Encrypted PSP Container]].

=== Header[https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipHeader.cs] ===
{| class="wikitable"
|-
! Offset !! Name !! Data Type
|-
| 0x00 || Color Lookup Table Offset || u32
|-
| 0x04 || Image Width || u32
|-
| 0x08 || Image Height || u32
|-
| 0x0C || Bits per pixel || u8
|-
| 0x0D || Number of Blocks || u8
|-
| 0x0E || Texture mode || u8
|-
| 0x0F || Alpha || u8
|-
| 0x10 || Data Offset || u32
|}

Only 4bpp and 8bpp are known to be valid. It is unknown what Number of Blocks and Texture mode are used for, they can be ignored when reading, and set to "2" and "1" respectively when writing. Alpha is "0" or "1", representing a boolean value of whether or not the image contains alpha.

=== Color Lookup Table ===

The Color Lookup Table is a 16 (if 4bpp) or 256 (if 8bpp) entry table containing all the colors used in the image. Each entry is 4 bytes wide, using a simple RGBA8888 layout. Each entry is tightly packed. It is located at the offset specified in the header.
{| class="wikitable"
|+ Color Entry
|-
! Name !! Data Type
|-
| R || u8
|-
| G || u8
|-
| B || u8
|-
| A || u8
|}

=== Image Data ===

Image data is stored uncompressed in the file at the offset specified in the header. In an 8bpp file, every byte is an index into the color lookup table, representing a single pixel. In a 4bpp file, every byte represents a two pixel horizontal strip, with the 4 least significant bits representing the color lookup table offset for the leftmost pixel, and the most significant 4 bits representing the color lookup table offset for the rightmost pixel. The game expects the image data to be swizzled[http://homebrew.pixelbath.com/wiki/PSP_texture_swizzling][https://github.com/LittleBigRefresh/Refresh/blob/eae66b71158531f07a37dbacbabe79b6ff692348/Refresh.GameServer/Importing/Mip/MipDecoder.cs#L29][https://github.com/ennuo/lbparc/blob/16ad36aa7f4eae2f7b406829e604082750f16fe1/src/resources/texture.js#L6].

MIP files uploaded to the PSP UGC server are always flipped vertically.

[[Category:File Formats|I]]
[[Category:LittleBigPlanet (PlayStation Portable) File Formats|I]]