charles bloom 2f44eb27d5 Fix alpha being turned on for textures when "Max Texture Size" is used ...

even when source image was opaque
this is caused by the mip filter being not quite normalized, which introduces a slightly less than 1 alpha
fix by increasing alpha tolerance to where a non-255 U8 alpha would actually be visible
prevents BC1 textures from becoming BC3 for no reason

#jira UE-133281
#preflight 6216749d104496cff89ca0e8
#rb dan.thompson,fabian.giesen

[CL 19097654 by charles bloom in ue5-main branch]

2022-02-23 14:33:29 -05:00

..

Private

Fix alpha being turned on for textures when "Max Texture Size" is used

2022-02-23 14:33:29 -05:00

Public

Remove broken bDitherMipMapAlpha

2022-02-15 17:40:14 -05:00

TextureCompressor.Build.cs

Attempt #2 (with issues fixed from last time): Extract texture format indexing and interfaces from the TargetPlatformManager and instead put it into a new type: TextureFormatManager instead. TargetPlatformManager retains the same API for querying texture format information, it just forwards to the TextureFormatManager instead. This is to facilitate the use of TextureCompressor from standalone executables that shouldn't depend on TargetPlatformManager.

2021-05-03 14:05:29 -04:00