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Henrik RydgårdandClaude Opus 5.5
02b688e4f3
MeasureString was slow mostly because of wrapping: DrawStringRect and MeasureStringRect re-ran the word wrapper every frame, and it measures every prefix of every word. Wrapped strings are now cached. The caches are unordered_maps with an xxhash of the key, and lookups reuse a key buffer so a hit doesn't allocate. UIContext also skips switching fonts when measuring in the current style. In a Mac debug build, 200 cached measures go from 0.26 to 0.06 ms and 10 wrapped paragraphs from 2.1 to 0.01 ms per frame. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
#pragma once
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#include <string>
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#include <string_view>
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#include "Common/Common.h"
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#include "Common/CommonTypes.h"
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#include "Common/Render/TextureAtlas.h"
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#include "Common/Data/Hash/Hash.h"
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// NOTE: Make sure the java flags match.
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enum class FontStyleFlags : u8 {
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Default = 0,
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Bold = 1,
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Light = 2,
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Italic = 16,
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Underline = 32, // Future use.
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Strikethrough = 64, // Future use.
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};
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ENUM_CLASS_BITOPS(FontStyleFlags);
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enum class FontFamily : u8 {
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SansSerif = 1,
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Fixed = 2,
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};
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struct FontStyle {
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FontStyle() {}
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constexpr FontStyle(FontFamily _family, int size, FontStyleFlags _flags) : family(_family), sizePts(size), flags(_flags) {}
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u16 sizePts = 0;
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FontFamily family = FontFamily::SansSerif;
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FontStyleFlags flags = FontStyleFlags::Default;
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};
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inline constexpr bool operator==(const FontStyle &a, const FontStyle &b) {
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return a.family == b.family && a.sizePts == b.sizePts && a.flags == b.flags;
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}
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inline constexpr bool operator<(const FontStyle &a, const FontStyle &b) {
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if (a.family != b.family)
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return a.family < b.family;
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if (a.sizePts != b.sizePts)
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return a.sizePts < b.sizePts;
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return a.flags < b.flags;
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}
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