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DrawList: added ImDrawFlags_NoAAEnds which allows to disable line end AA.

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This commit is contained in:
Mikko Mononen
2026-08-05 21:24:51 +02:00
committed by ocornut
parent fc3097ba17
commit 2b0e9043dc
3 changed files with 54 additions and 29 deletions
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imgui_draw.cpp
+49 -26
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@@ -929,21 +929,31 @@ void ImDrawList::_AddPolyline(const ImVec2* points, ImVec2* normals, float* sqr_
const ImVec2 dir(n1.y, -n1.x);
if (flags & ImDrawFlags_SquareCap)
p1 -= dir * half_thickness;
const ImVec2 pa = p1 - dir * half_aa;
const ImVec2 pb = p1 + dir * half_aa;
base_idx = (int)_VtxCurrentIdx;
IM_APPEND_VTX(pa.x - n1.x * thickness0, pa.y - n1.y * thickness0, uv0, col_trans);
IM_APPEND_VTX(pa.x + n1.x * thickness1, pa.y + n1.y * thickness1, uv1, col_trans);
if (flags & ImDrawFlags_NoAAEnds)
{
base_idx = (int)_VtxCurrentIdx;
IM_APPEND_VTX(p1.x - n1.x * thickness0, p1.y - n1.y * thickness0, uv0, col);
IM_APPEND_VTX(p1.x + n1.x * thickness1, p1.y + n1.y * thickness1, uv1, col);
}
else
{
const ImVec2 pa = p1 - dir * half_aa;
const ImVec2 pb = p1 + dir * half_aa;
int next_base_idx = (int)_VtxCurrentIdx;
IM_APPEND_VTX(pb.x - n1.x * thickness0, pb.y - n1.y * thickness0, uv0, col);
IM_APPEND_VTX(pb.x + n1.x * thickness1, pb.y + n1.y * thickness1 , uv1, col);
base_idx = (int)_VtxCurrentIdx;
IM_APPEND_VTX(pa.x - n1.x * thickness0, pa.y - n1.y * thickness0, uv0, col_trans);
IM_APPEND_VTX(pa.x + n1.x * thickness1, pa.y + n1.y * thickness1, uv1, col_trans);
// AA cap
IM_APPEND_TRI(base_idx+0, base_idx+2, base_idx+3);
IM_APPEND_TRI(base_idx+0, base_idx+3, base_idx+1);
base_idx = next_base_idx;
int next_base_idx = (int)_VtxCurrentIdx;
IM_APPEND_VTX(pb.x - n1.x * thickness0, pb.y - n1.y * thickness0, uv0, col);
IM_APPEND_VTX(pb.x + n1.x * thickness1, pb.y + n1.y * thickness1, uv1, col);
// AA cap
IM_APPEND_TRI(base_idx + 0, base_idx + 2, base_idx + 3);
IM_APPEND_TRI(base_idx + 0, base_idx + 3, base_idx + 1);
base_idx = next_base_idx;
}
}
else
{
@@ -1101,24 +1111,37 @@ void ImDrawList::_AddPolyline(const ImVec2* points, ImVec2* normals, float* sqr_
const ImVec2 dir(n1.y, -n1.x);
if (flags & ImDrawFlags_SquareCap)
p1 += dir * half_thickness;
const ImVec2 pa = p1 - dir * half_aa;
const ImVec2 pb = p1 + dir * half_aa;
int next_base_idx = (int)_VtxCurrentIdx;
IM_APPEND_VTX(pa.x - n1.x * thickness0, pa.y - n1.y * thickness0, uv0, col);
IM_APPEND_VTX(pa.x + n1.x * thickness1, pa.y + n1.y * thickness1, uv1, col);
if (flags & ImDrawFlags_NoAAEnds)
{
IM_APPEND_VTX(p1.x - n1.x * thickness0, p1.y - n1.y * thickness0, uv0, col);
IM_APPEND_VTX(p1.x + n1.x * thickness1, p1.y + n1.y * thickness1, uv1, col);
IM_APPEND_VTX(pb.x - n1.x * thickness0, pb.y - n1.y * thickness0, uv0, col_trans);
IM_APPEND_VTX(pb.x + n1.x * thickness1, pb.y + n1.y * thickness1, uv1, col_trans);
// Connect
IM_APPEND_TRI(base_idx + 0, base_idx + 2, base_idx + 3);
IM_APPEND_TRI(base_idx + 0, base_idx + 3, base_idx + 1);
}
else
{
const ImVec2 pa = p1 - dir * half_aa;
const ImVec2 pb = p1 + dir * half_aa;
// Connect
IM_APPEND_TRI(base_idx+0, base_idx+2, base_idx+3);
IM_APPEND_TRI(base_idx+0, base_idx+3, base_idx+1);
base_idx = next_base_idx;
int next_base_idx = (int)_VtxCurrentIdx;
IM_APPEND_VTX(pa.x - n1.x * thickness0, pa.y - n1.y * thickness0, uv0, col);
IM_APPEND_VTX(pa.x + n1.x * thickness1, pa.y + n1.y * thickness1, uv1, col);
// AA cap
IM_APPEND_TRI(base_idx+0, base_idx+2, base_idx+3);
IM_APPEND_TRI(base_idx+0, base_idx+3, base_idx+1);
IM_APPEND_VTX(pb.x - n1.x * thickness0, pb.y - n1.y * thickness0, uv0, col_trans);
IM_APPEND_VTX(pb.x + n1.x * thickness1, pb.y + n1.y * thickness1, uv1, col_trans);
// Connect
IM_APPEND_TRI(base_idx + 0, base_idx + 2, base_idx + 3);
IM_APPEND_TRI(base_idx + 0, base_idx + 3, base_idx + 1);
base_idx = next_base_idx;
// AA cap
IM_APPEND_TRI(base_idx + 0, base_idx + 2, base_idx + 3);
IM_APPEND_TRI(base_idx + 0, base_idx + 3, base_idx + 1);
}
}
else
{