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imgui_freetype: Fixed crash when FT_Render_Glyph() returns NULL (which apparently happens with Freetype 2.11). (#4394, #4145 ?)

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This commit is contained in:
ocornut 2021-08-23 16:42:58 +02:00
parent 6afe9bbb45
commit 68f428b449
2 changed files with 7 additions and 2 deletions
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5
docs/CHANGELOG.txt
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@ -40,9 +40,12 @@ Breaking Changes:
Can use 'GetWindowContentRegionMax().x - GetWindowContentRegionMin().x' instead but it's not
very useful in practice, and the only use of it in the demo was illfit.
Other Changes:
- imgui_freetype: Fixed crash when FT_Render_Glyph() fails to render a glyph and returns NULL
(which apparently happens with Freetype 2.11). (#4394, #4145?).
-----------------------------------------------------------------------
VERSION 1.84.2 (Released 2021-08-23)
-----------------------------------------------------------------------

4
misc/freetype/imgui_freetype.cpp
View File

@ -6,6 +6,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2021/08/23: fixed crash when FT_Render_Glyph() fails to render a glyph and returns NULL.
// 2021/03/05: added ImGuiFreeTypeBuilderFlags_Bitmap to load bitmap glyphs.
// 2021/03/02: set 'atlas->TexPixelsUseColors = true' to help some backends with deciding of a prefered texture format.
// 2021/01/28: added support for color-layered glyphs via ImGuiFreeTypeBuilderFlags_LoadColor (require Freetype 2.10+).
@ -539,7 +540,8 @@ bool ImFontAtlasBuildWithFreeTypeEx(FT_Library ft_library, ImFontAtlas* atlas, u
// Render glyph into a bitmap (currently held by FreeType)
const FT_Bitmap* ft_bitmap = src_tmp.Font.RenderGlyphAndGetInfo(&src_glyph.Info);
IM_ASSERT(ft_bitmap);
if (ft_bitmap == NULL)
continue;
// Allocate new temporary chunk if needed
const int bitmap_size_in_bytes = src_glyph.Info.Width * src_glyph.Info.Height * 4;