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DrawList: optimize non-AA non-rounded case of AddRect()

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Mikko Mononen 2026-05-08 13:44:14 +03:00 committed by ocornut
parent 9199934a7f
commit 789f0d7140
1 changed files with 25 additions and 8 deletions
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33
imgui_draw.cpp
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@ -1767,17 +1767,34 @@ void ImDrawList::AddRect(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, fl
s_rounding += s_thickness / 2; s_rounding += s_thickness / 2;
} }
// FIXME-WIP: Why isn't rounding offset in the _StrokeInside case?
if (s_rounding <= 0 || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone) if (s_rounding <= 0 || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
{ {
// FIXME-WIP: This could use half the number of vertices. const ImVec2 opaque_uv = _Data->TexUvWhitePixel;
const float t = (float)s_thickness * _FringeScale; const float t = (float)s_thickness * _FringeScale;
PrimReserve(6*4, 4*4);
PrimRect(ImVec2(s_min.x, s_min.y), ImVec2(s_max.x, s_min.y + t), col); PrimReserve(8*3, 8);
PrimRect(ImVec2(s_min.x, s_min.y + t), ImVec2(s_min.x + t, s_max.y - t), col); const ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
PrimRect(ImVec2(s_max.x - t, s_min.y + t), ImVec2(s_max.x, s_max.y - t), col); IM_APPEND_VTX(s_min.x, s_min.y, opaque_uv, col);
PrimRect(ImVec2(s_min.x, s_max.y - t), ImVec2(s_max.x, s_max.y), col); IM_APPEND_VTX(s_min.x + t, s_min.y + t, opaque_uv, col);
IM_APPEND_VTX(s_max.x, s_min.y, opaque_uv, col);
IM_APPEND_VTX(s_max.x - t, s_min.y + t, opaque_uv, col);
IM_APPEND_VTX(s_max.x, s_max.y, opaque_uv, col);
IM_APPEND_VTX(s_max.x - t, s_max.y - t, opaque_uv, col);
IM_APPEND_VTX(s_min.x, s_max.y, opaque_uv, col);
IM_APPEND_VTX(s_min.x + t, s_max.y - t, opaque_uv, col);
IM_APPEND_TRI(idx + 0, idx + 3, idx + 1);
IM_APPEND_TRI(idx + 0, idx + 2, idx + 3);
IM_APPEND_TRI(idx + 2, idx + 5, idx + 3);
IM_APPEND_TRI(idx + 2, idx + 4, idx + 5);
IM_APPEND_TRI(idx + 4, idx + 7, idx + 5);
IM_APPEND_TRI(idx + 4, idx + 6, idx + 7);
IM_APPEND_TRI(idx + 6, idx + 1, idx + 7);
IM_APPEND_TRI(idx + 6, idx + 0, idx + 1);
return; return;
} }
if ((Flags & ImDrawListFlags_RoundCornersUseTex) && s_thickness <= IM_DRAWLIST_TEX_CORNERS_THICKNESS_MAX && s_rounding <= IM_DRAWLIST_TEX_CORNERS_ROUNDING_MAX) if ((Flags & ImDrawListFlags_RoundCornersUseTex) && s_thickness <= IM_DRAWLIST_TEX_CORNERS_THICKNESS_MAX && s_rounding <= IM_DRAWLIST_TEX_CORNERS_ROUNDING_MAX)