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author | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2019-05-18 21:52:20 +0300 |
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committer | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2019-05-19 15:36:42 +0300 |
commit | 7aaa7aa9dd79b8c6e37f351fd67a93ba07fbb883 (patch) | |
tree | 6d64084b9b104ad3d9f2bbff2b3d0404ec356862 /source/blender/makesdna | |
parent | 3b23b5c638feae0ad6319440771b83a64a1f9ebe (diff) |
Images: change alpha settings to support channel packing
This also replaces the Use Alpha setting. We now have these alpha modes:
* Straight: store RGB and alpha channels separately with alpha acting as a
mask, also known as unassociated alpha.
* Premultiplied: transparent RGB pixels are multiplied by the alpha channel.
The natural format for renders.
* Channel Packed: different images are packed in the RGB and alpha channels,
and they should not influence each other. Channel packing is commonly used
by game engines to save memory.
* None: ignore alpha channel from the file and make image fully opaque.
Cycles OSL does not correctly support Channel Packed and None yet, we are
missing fine control over the OpenImageIO texture cache to do that.
Fixes T53672
Diffstat (limited to 'source/blender/makesdna')
-rw-r--r-- | source/blender/makesdna/DNA_image_types.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/source/blender/makesdna/DNA_image_types.h b/source/blender/makesdna/DNA_image_types.h index 3e42aa17492..6141472125f 100644 --- a/source/blender/makesdna/DNA_image_types.h +++ b/source/blender/makesdna/DNA_image_types.h @@ -178,7 +178,7 @@ enum { /** For image user, but these flags are mixed. */ IMA_USER_FRAME_IN_RANGE = (1 << 10), IMA_VIEW_AS_RENDER = (1 << 11), - IMA_IGNORE_ALPHA = (1 << 12), + IMA_FLAG_UNUSED_12 = (1 << 12), /* cleared */ IMA_DEINTERLACE = (1 << 13), IMA_USE_VIEWS = (1 << 14), IMA_FLAG_UNUSED_15 = (1 << 15), /* cleared */ @@ -233,6 +233,8 @@ enum { enum { IMA_ALPHA_STRAIGHT = 0, IMA_ALPHA_PREMUL = 1, + IMA_ALPHA_CHANNEL_PACKED = 2, + IMA_ALPHA_IGNORE = 3, }; #endif |