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Replace UTF-8 decoder with one based on branchless version by Christopher Wellons. (not branchless anymore tho)

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Decoding performance increase ~30%
This commit is contained in:
Rokas Kupstys
2020-11-03 14:32:44 +01:00
committed by ocornut
parent 3777fbbd81
commit 9cca1b2e97
2 changed files with 50 additions and 55 deletions
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docs/CHANGELOG.txt
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@ -64,6 +64,9 @@ Other Changes:
- Drag and Drop: Fix drag and drop to tie same-size drop targets by choosen the later one. Fixes dragging
into a full-window-sized dockspace inside a zero-padded window. (#3519, #2717) [@Black-Cat]
- Metrics: Fixed mishandling of ImDrawCmd::VtxOffset in wireframe mesh renderer.
- Misc: Replaced UTF-8 decoder by branchless one by Christopher Wellons (30~40% faster). [@rokups]
Super minor fix handling incomplete UTF-8 contents: if input does not contain enough bytes, decoder
returns IM_UNICODE_CODEPOINT_INVALID and consume remaining bytes (vs old decoded consumed only 1 byte).
- Backends: OpenGL3: Use glGetString(GL_VERSION) query instead of glGetIntegerv(GL_MAJOR_VERSION, ...)
when the later returns zero (e.g. Desktop GL 2.x). (#3530) [@xndcn]
- Backends: OpenGL3: Backup and restore GL_PRIMITIVE_RESTART state. (#3544) [@Xipiryon]