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Backends: Metal: Ignore ImDrawCmd where ElemCount == 0. (#4857)

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ocornut 2022-01-03 22:14:19 +01:00
parent b0a6cd6305
commit efa50f72a7
2 changed files with 5 additions and 0 deletions
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3
backends/imgui_impl_metal.mm
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@ -12,6 +12,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2022-01-03: Metal: Ignore ImDrawCmd where ElemCount == 0 (very rare but can technically be manufactured by user code).
// 2021-12-30: Metal: Added Metal C++ support. Enable with '#define IMGUI_IMPL_METAL_CPP' in your imconfig.h file.
// 2021-08-24: Metal: Fixed a crash when clipping rect larger than framebuffer is submitted. (#4464)
// 2021-05-19: Metal: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
@ -552,6 +553,8 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
if (clip_max.y > fb_height) { clip_max.y = (float)fb_height; }
if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
continue;
if (pcmd->ElemCount == 0) // drawIndexedPrimitives() validation doesn't accept this
continue;
// Apply scissor/clipping rectangle
MTLScissorRect scissorRect =

2
docs/CHANGELOG.txt
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@ -54,6 +54,8 @@ Other Changes:
It would generally not have noticeable side-effect at runtime but would be detected by runtime checkers.
- Backends: Metal: Added Apple Metal C++ API support. (#4824, #4746) [@luigifcruz]
Enable with '#define IMGUI_IMPL_METAL_CPP' in your imconfig.h file.
- Backends: Metal: Ignore ImDrawCmd where ElemCount == 0, which are normally not emitted by the library but
can theorically be created by user code manipulating a ImDrawList. (#4857)
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