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Fonts: for large size fonts, layout/size calculation only load glyphs metrics. Actual glyphs are renderer+packed when used by drawing functions. (#8758, #8465)

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(Breaking) breaks signature of ImFontLoader::FontBakedLoadGlyph, sorry.
This commit is contained in:
ocornut 2025-06-30 21:16:20 +02:00
parent 51b3495ad8
commit fd75bdccb0
4 changed files with 93 additions and 23 deletions
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6
imgui_internal.h
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@ -3691,7 +3691,7 @@ struct ImFontLoader
bool (*FontSrcContainsGlyph)(ImFontAtlas* atlas, ImFontConfig* src, ImWchar codepoint);
bool (*FontBakedInit)(ImFontAtlas* atlas, ImFontConfig* src, ImFontBaked* baked, void* loader_data_for_baked_src);
void (*FontBakedDestroy)(ImFontAtlas* atlas, ImFontConfig* src, ImFontBaked* baked, void* loader_data_for_baked_src);
bool (*FontBakedLoadGlyph)(ImFontAtlas* atlas, ImFontConfig* src, ImFontBaked* baked, void* loader_data_for_baked_src, ImWchar codepoint, ImFontGlyph* out_glyph);
bool (*FontBakedLoadGlyph)(ImFontAtlas* atlas, ImFontConfig* src, ImFontBaked* baked, void* loader_data_for_baked_src, ImWchar codepoint, ImFontGlyph* out_glyph, float* out_advance_x);
// Size of backend data, Per Baked * Per Source. Buffers are managed by core to avoid excessive allocations.
// FIXME: At this point the two other types of buffers may be managed by core to be consistent?
@ -3711,7 +3711,8 @@ typedef ImFontLoader ImFontBuilderIO; // [renamed/changed in 1.92] The types are
// [SECTION] ImFontAtlas internal API
//-----------------------------------------------------------------------------
#define IMGUI_FONT_SIZE_MAX (512.0f)
#define IMGUI_FONT_SIZE_MAX (512.0f)
#define IMGUI_FONT_SIZE_THRESHOLD_FOR_LOADADVANCEXONLYMODE (128.0f)
// Helpers: ImTextureRef ==/!= operators provided as convenience
// (note that _TexID and _TexData are never set simultaneously)
@ -3829,6 +3830,7 @@ IMGUI_API ImFontBaked* ImFontAtlasBakedGetClosestMatch(ImFontAtlas* atlas,
IMGUI_API ImFontBaked* ImFontAtlasBakedAdd(ImFontAtlas* atlas, ImFont* font, float font_size, float font_rasterizer_density, ImGuiID baked_id);
IMGUI_API void ImFontAtlasBakedDiscard(ImFontAtlas* atlas, ImFont* font, ImFontBaked* baked);
IMGUI_API ImFontGlyph* ImFontAtlasBakedAddFontGlyph(ImFontAtlas* atlas, ImFontBaked* baked, ImFontConfig* src, const ImFontGlyph* in_glyph);
IMGUI_API void ImFontAtlasBakedAddFontGlyphAdvancedX(ImFontAtlas* atlas, ImFontBaked* baked, ImFontConfig* src, ImWchar codepoint, float advance_x);
IMGUI_API void ImFontAtlasBakedDiscardFontGlyph(ImFontAtlas* atlas, ImFont* font, ImFontBaked* baked, ImFontGlyph* glyph);
IMGUI_API void ImFontAtlasBakedSetFontGlyphBitmap(ImFontAtlas* atlas, ImFontBaked* baked, ImFontConfig* src, ImFontGlyph* glyph, ImTextureRect* r, const unsigned char* src_pixels, ImTextureFormat src_fmt, int src_pitch);