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DrawList: fixed passing large thickness value (e.g. 1e20f) to thickness crashing the code.

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thedmd
2026-07-30 21:25:37 +02:00
committed by ocornut
parent d9711abaa0
commit 9695af5162
1 changed files with 3 additions and 1 deletions
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4
imgui_draw.cpp
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@@ -921,8 +921,10 @@ void ImDrawList::_SelectFringeTexture(float screen_thickness, ImVec4* out_tex_uv
int texture_idx;
if (screen_thickness <= IM_DRAWLIST_TEX_LINES_DETAILED_WIDTH) IM_LIKELY
texture_idx = (int)((screen_thickness - 1.0f) * IM_DRAWLIST_TEX_LINES_SAMPLE_COUNT + 0.5f) + (IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 1);
else if (screen_thickness < (float)IM_DRAWLIST_TEX_LINES_WIDTH_MAX - 1.5f) IM_LIKELY
texture_idx = (int)(screen_thickness + 0.5f);
else
texture_idx = ImMin((int)(screen_thickness + 0.5f), IM_DRAWLIST_TEX_LINES_WIDTH_MAX - 1);
texture_idx = IM_DRAWLIST_TEX_LINES_WIDTH_MAX - 1; // Catches large values of screen_thickness (and +inf/NaN) that a ImMin() wouldn't.
// Scale the fringe so that the texture matches the line thickness.
ImVec4 tex_uvs = _Data->TexUvLines[texture_idx];