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authorErik Kundiman <erik@megapahit.org>2026-07-24 11:24:12 +0800
committerErik Kundiman <erik@megapahit.org>2026-07-24 11:24:12 +0800
commitfc46ce4c0c7d81349d55933fb4bef3260f79ac8b (patch)
tree42b81558404432b253684661136dcd38722f59a7 /indra/llkdu/llimagej2ckdu.cpp
parentffd174763119879d8be376c7c94b58e1961a7ebd (diff)
parentbcfda3b68a95bbbfb8b53f6313929fc5aeaa591c (diff)
Merge tag 'Second_Life_Release#bcfda3b6-26.3' into 26.3
Diffstat (limited to 'indra/llkdu/llimagej2ckdu.cpp')
-rw-r--r--indra/llkdu/llimagej2ckdu.cpp30
1 files changed, 0 insertions, 30 deletions
diff --git a/indra/llkdu/llimagej2ckdu.cpp b/indra/llkdu/llimagej2ckdu.cpp
index 74aaffbd65..cf45f93168 100644
--- a/indra/llkdu/llimagej2ckdu.cpp
+++ b/indra/llkdu/llimagej2ckdu.cpp
@@ -1551,33 +1551,3 @@ void kdc_flow_control::process_components()
}
}
}
-
-// Layer-factored byte estimator. Walks the resolution pyramid to count
-// layers, weights by layer_factor, then picks between a sqrt-based "new"
-// estimate and a raw-dimensions "old" estimate per TextureNewByteRange.
-// Reference: https://wiki.lindenlab.com/wiki/THX1138_KDU_Improvements#Byte_Range_Study
-S32 LLImageJ2CKDU::estimateDataSize(S32 w, S32 h, S32 comp, S32 discard_level, F32 rate) const
-{
- S32 width = (w > 0) ? w : 2048;
- S32 height = (h > 0) ? h : 2048;
- S32 nb_layers = 1;
- S32 surface = width * height;
- S32 s = MAX_BLOCK_SIZE * MAX_BLOCK_SIZE;
- while (surface > s)
- {
- nb_layers++;
- s *= 4;
- }
- F32 layer_factor = 3.0f * (7 - llclamp(nb_layers, 1, 6));
-
- width >>= discard_level;
- height >>= discard_level;
- width = llmax(width, 1);
- height = llmax(height, 1);
-
- S32 new_bytes = (S32)(sqrtf((F32)(width * height)) * (F32)comp * rate * 1000.f / layer_factor);
- S32 old_bytes = (S32)((F32)(width * height * comp) * rate);
- S32 bytes = (LLImage::useNewByteRange() && (new_bytes < old_bytes)) ? new_bytes : old_bytes;
- bytes = llmax(bytes, LLImageJ2C::calcHeaderSizeJ2C());
- return bytes;
-}