TXTR (Tropical Freeze): Difference between revisions
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The '''TXTR''' format is Tropical Freeze's texture format. The image data in the GPU buffer is compressed using [[LZSS Compression|LZSS compression]]. | The '''TXTR''' format is Tropical Freeze's texture format. The image data in the GPU buffer is compressed using [[LZSS Compression|LZSS compression]]. | ||
{{research| | {{research|moderate|There are a couple unknowns in the header. It would also be good to have some documentation on how to deswizzle/decompress different texture formats.}} | ||
__TOC__ | __TOC__ | ||
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{| class="wikitable" | {| class="wikitable" | ||
! Offset | ! Offset | ||
! Type | ! style="width:110px;"|Type | ||
! Count | ! style="width:100px;"|Count | ||
! Name | ! style="width:170px;"|Name | ||
! Notes | ! Notes | ||
|- | |- | ||
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| 1 | | 1 | ||
| [[#Texture Type|'''Texture Type''']] | | [[#Texture Type|'''Texture Type''']] | ||
| | | Describes the type/dimensionality of the texture (2D texture, 3D texture, cubemap, array of 2D images, etc). | ||
|- | |- | ||
| 0x1C | | 0x1C | ||
| Line 34: | Line 34: | ||
| 1 | | 1 | ||
| [[#Texture Format|'''Texture Format''']] | | [[#Texture Format|'''Texture Format''']] | ||
| | | Describes the format that the image data is encoded in. | ||
|- | |- | ||
| 0x20 | | 0x20 | ||
| Line 40: | Line 40: | ||
| 1 | | 1 | ||
| '''Width''' | | '''Width''' | ||
| | | Texture X resolution. | ||
|- | |- | ||
| 0x24 | | 0x24 | ||
| Line 46: | Line 46: | ||
| 1 | | 1 | ||
| '''Height''' | | '''Height''' | ||
| | | Texture Y resolution. | ||
|- | |- | ||
| 0x28 | | 0x28 | ||
| Line 52: | Line 52: | ||
| 1 | | 1 | ||
| '''Depth''' | | '''Depth''' | ||
| | | Texture Z resolution. | ||
|- | |- | ||
| 0x2C | | 0x2C | ||
| u32 | | u32 | ||
| 1 | | 1 | ||
| | | '''Tile Mode''' | ||
| | | Indicates how the texture image data is tiled. | ||
|- | |- | ||
| 0x30 | | 0x30 | ||
| Line 64: | Line 64: | ||
| 1 | | 1 | ||
| '''Swizzle''' | | '''Swizzle''' | ||
| | | Indicates how the texture image data is swizzled. | ||
|- | |- | ||
| 0x34 | | 0x34 | ||
| Line 75: | Line 75: | ||
| u32 | | u32 | ||
| ''Mipmap Count'' | | ''Mipmap Count'' | ||
| | | '''Mipmap Sizes''' | ||
| | | The size of the base level mipmap is calculated with padding and alignment taken into account. The size of subsequent mipmaps is calculated as Width*Height*Depth*BPP/8. This does '''not''' take padding and alignment into account, and so it does not accurately reflect the amount of space the mipmap takes up in the file, and it cannot be used to accurately locate and read mipmap data. The offset and size needs to be calculated from the other parameters in the header. The game calculates this data by calling GX2CalcSurfaceSizeAndAlignment. | ||
|- | |- | ||
| {{none}} | | {{none}} | ||
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| 1 | | 1 | ||
| [[#Texture Filter|'''Texture Filter''']] | | [[#Texture Filter|'''Texture Filter''']] | ||
| | | Determines how the texture is filtered when sampled. | ||
|- | |- | ||
| {{none}} | | {{none}} | ||
| u8 | | u8 | ||
| 1 | | 1 | ||
| [[#Texture Wrap|'''Texture | | [[#Texture Wrap|'''Texture Wrap X''']] | ||
| | | Determines how the texture wraps on the X coordinate. | ||
|- | |- | ||
| {{none}} | | {{none}} | ||
| Line 100: | Line 100: | ||
| 1 | | 1 | ||
| [[#Texture Wrap|'''Texture Wrap Y''']] | | [[#Texture Wrap|'''Texture Wrap Y''']] | ||
| | | Determines how the texture wraps on the Y coordinate. | ||
|- | |- | ||
| {{none}} | | {{none}} | ||
| Line 106: | Line 106: | ||
| 1 | | 1 | ||
| [[#Texture Wrap|'''Texture Wrap Z''']] | | [[#Texture Wrap|'''Texture Wrap Z''']] | ||
| | | Determines how the texture wraps on the Z coordinate. | ||
|} | |} | ||
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{| class="wikitable" | {| class="wikitable" | ||
! ID | ! ID | ||
! | ! Type | ||
|- | |- | ||
| 0 | | 0 | ||
| | | 1D Texture | ||
|- | |- | ||
| 1 | | 1 | ||
| | | 2D Texture | ||
|- | |- | ||
| 2 | | 2 | ||
| | | 3D Texture | ||
|- | |- | ||
| 3 | | 3 | ||
| | | Cube Texture | ||
|- | |- | ||
| 4 | | 4 | ||
| | | 1D Texture Array | ||
|- | |- | ||
| 5 | | 5 | ||
| | | 2D Texture Array | ||
|- | |- | ||
| 6 | | 6 | ||
| | | Multisampled 2D Texture | ||
|- | |- | ||
| 7 | | 7 | ||
| | | Multisampled 2D Texture Array | ||
|} | |} | ||
| Line 302: | Line 302: | ||
| 1 | | 1 | ||
| {{unknown|Unknown}} | | {{unknown|Unknown}} | ||
| | | Always 4 | ||
|- | |- | ||
| 0x4 | | 0x4 | ||
| Line 319: | Line 319: | ||
| u32 | | u32 | ||
| 1 | | 1 | ||
| | | '''Base Alignment''' | ||
| | | Alignment of the surface image data | ||
|- | |- | ||
| 0x10 | | 0x10 | ||