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Fonts: Core allocates per-baked-per-src backend buffers, to allow having custom backend per font source. Backend BakedInit/Destroy/AddGlyph process a single source.

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ocornut 2025-02-06 15:19:23 +01:00
parent d59f10d7f5
commit 1cfc0de31d
4 changed files with 133 additions and 128 deletions
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12
imgui_internal.h
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@ -3668,9 +3668,13 @@ struct ImFontLoader
bool (*FontSrcInit)(ImFontAtlas* atlas, ImFontConfig* src);
void (*FontSrcDestroy)(ImFontAtlas* atlas, ImFontConfig* src);
bool (*FontSrcContainsGlyph)(ImFontAtlas* atlas, ImFontConfig* src, ImWchar codepoint);
void (*FontBakedInit)(ImFontAtlas* atlas, ImFontBaked* baked);
void (*FontBakedDestroy)(ImFontAtlas* atlas, ImFontBaked* baked);
bool (*FontBakedAddGlyph)(ImFontAtlas* atlas, ImFontBaked* baked, ImFontConfig* srcs, int srcs_count, ImWchar codepoint);
void (*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 (*FontBakedAddGlyph)(ImFontAtlas* atlas, ImFontConfig* src, ImFontBaked* baked, void* loader_data_for_baked_src, ImWchar codepoint);
// 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?
size_t FontBakedSrcLoaderDataSize;
ImFontLoader() { memset(this, 0, sizeof(*this)); }
};
@ -3770,11 +3774,11 @@ IMGUI_API bool ImFontAtlasBuildAddFont(ImFontAtlas* atlas, ImFontCo
IMGUI_API void ImFontAtlasBuildSetupFontSpecialGlyphs(ImFontAtlas* atlas, ImFont* font, ImFontConfig* src);
IMGUI_API void ImFontAtlasBuildDiscardBakes(ImFontAtlas* atlas, int unused_frames);
IMGUI_API void ImFontAtlasBuildDiscardFont(ImFontAtlas* atlas, ImFont* font);
IMGUI_API ImFontBaked* ImFontAtlasBuildAddFontBaked(ImFontAtlas* atlas, ImFont* font, float font_size, ImGuiID baked_id);
IMGUI_API void ImFontAtlasBuildDiscardFontBaked(ImFontAtlas* atlas, ImFont* font, ImFontBaked* baked);
IMGUI_API void ImFontAtlasBuildDiscardFontBakedGlyph(ImFontAtlas* atlas, ImFont* font, ImFontBaked* baked, ImFontGlyph* glyph);
IMGUI_API void ImFontAtlasBuildPreloadAllGlyphRanges(ImFontAtlas* atlas); // Legacy
IMGUI_API void ImFontAtlasBuildGetOversampleFactors(ImFontConfig* src, float size, int* out_oversample_h, int* out_oversample_v);
IMGUI_API bool ImFontAtlasBuildAcceptCodepointForSource(ImFontConfig* src, ImWchar codepoint);
IMGUI_API ImFontGlyph* ImFontAtlasBakedAddFontGlyph(ImFontAtlas* atlas, ImFontBaked* baked, ImFontConfig* src, const ImFontGlyph* in_glyph);
IMGUI_API void ImFontAtlasBakedSetFontGlyphBitmap(ImFontAtlas* atlas, ImFontBaked* baked, ImFontConfig* src, ImFontGlyph* glyph, ImFontAtlasRect* r, const unsigned char* src_pixels, ImTextureFormat src_fmt, int src_pitch);