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DrawList: Fixed divide-by-zero or glitches with Radius/Rounding values close to zero. (#5249, #5293, #3491)

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Amend 8ed34af6f8
This commit is contained in:
ocornut 2022-05-13 17:18:06 +02:00
parent 9779cc2fe2
commit 9e0517a134
4 changed files with 11 additions and 11 deletions
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3
docs/CHANGELOG.txt
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@ -85,8 +85,9 @@ Other Changes:
always lead to menu closure. Fixes using items that are not MenuItem() or BeginItem() at the root
level of a popup with a child menu opened.
- Stack Tool: Added option to copy item path to clipboard. (#4631)
- Drawlist: Fixed PathArcTo() emitting terminating vertices too close to arc vertices. (#4993) [@thedmd]
- DrawList: Fixed PathArcTo() emitting terminating vertices too close to arc vertices. (#4993) [@thedmd]
- DrawList: Fixed texture-based anti-aliasing path with RGBA textures (#5132, #3245) [@cfillion]
- DrawList: Fixed divide-by-zero or glitches with Radius/Rounding values close to zero. (#5249, #5293, #3491)
- Debug: Added DebugTextEncoding() function to facilitate diagnosing issues when not sure about whether
you have a UTF-8 text encoding issue or a font loading issue. [@LaMarche05, @ocornut]
- Metrics: Added a "UTF-8 Encoding Viewer" section using the aforementioned DebugTextEncoding() function.

2
imgui.h
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@ -65,7 +65,7 @@ Index of this file:
// Version
// (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
#define IMGUI_VERSION "1.88 WIP"
#define IMGUI_VERSION_NUM 18720
#define IMGUI_VERSION_NUM 18721
#define IMGUI_CHECKVERSION() ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
#define IMGUI_HAS_TABLE

16
imgui_draw.cpp
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@ -393,7 +393,7 @@ void ImDrawListSharedData::SetCircleTessellationMaxError(float max_error)
for (int i = 0; i < IM_ARRAYSIZE(CircleSegmentCounts); i++)
{
const float radius = (float)i;
CircleSegmentCounts[i] = (ImU8)((i > 0) ? IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, CircleSegmentMaxError) : 0);
CircleSegmentCounts[i] = (ImU8)((i > 0) ? IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, CircleSegmentMaxError) : IM_DRAWLIST_ARCFAST_SAMPLE_MAX);
}
ArcFastRadiusCutoff = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC_R(IM_DRAWLIST_ARCFAST_SAMPLE_MAX, CircleSegmentMaxError);
}
@ -1058,7 +1058,7 @@ void ImDrawList::AddConvexPolyFilled(const ImVec2* points, const int points_coun
void ImDrawList::_PathArcToFastEx(const ImVec2& center, float radius, int a_min_sample, int a_max_sample, int a_step)
{
if (radius <= 0.0f)
if (radius < 0.5f)
{
_Path.push_back(center);
return;
@ -1150,7 +1150,7 @@ void ImDrawList::_PathArcToFastEx(const ImVec2& center, float radius, int a_min_
void ImDrawList::_PathArcToN(const ImVec2& center, float radius, float a_min, float a_max, int num_segments)
{
if (radius <= 0.0f)
if (radius < 0.5f)
{
_Path.push_back(center);
return;
@ -1169,7 +1169,7 @@ void ImDrawList::_PathArcToN(const ImVec2& center, float radius, float a_min, fl
// 0: East, 3: South, 6: West, 9: North, 12: East
void ImDrawList::PathArcToFast(const ImVec2& center, float radius, int a_min_of_12, int a_max_of_12)
{
if (radius <= 0.0f)
if (radius < 0.5f)
{
_Path.push_back(center);
return;
@ -1179,7 +1179,7 @@ void ImDrawList::PathArcToFast(const ImVec2& center, float radius, int a_min_of_
void ImDrawList::PathArcTo(const ImVec2& center, float radius, float a_min, float a_max, int num_segments)
{
if (radius <= 0.0f)
if (radius < 0.5f)
{
_Path.push_back(center);
return;
@ -1360,7 +1360,7 @@ void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, ImDr
rounding = ImMin(rounding, ImFabs(b.x - a.x) * ( ((flags & ImDrawFlags_RoundCornersTop) == ImDrawFlags_RoundCornersTop) || ((flags & ImDrawFlags_RoundCornersBottom) == ImDrawFlags_RoundCornersBottom) ? 0.5f : 1.0f ) - 1.0f);
rounding = ImMin(rounding, ImFabs(b.y - a.y) * ( ((flags & ImDrawFlags_RoundCornersLeft) == ImDrawFlags_RoundCornersLeft) || ((flags & ImDrawFlags_RoundCornersRight) == ImDrawFlags_RoundCornersRight) ? 0.5f : 1.0f ) - 1.0f);
if (rounding <= 0.0f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
{
PathLineTo(a);
PathLineTo(ImVec2(b.x, a.y));
@ -1406,7 +1406,7 @@ void ImDrawList::AddRectFilled(const ImVec2& p_min, const ImVec2& p_max, ImU32 c
{
if ((col & IM_COL32_A_MASK) == 0)
return;
if (rounding <= 0.0f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
{
PrimReserve(6, 4);
PrimRect(p_min, p_max, col);
@ -1646,7 +1646,7 @@ void ImDrawList::AddImageRounded(ImTextureID user_texture_id, const ImVec2& p_mi
return;
flags = FixRectCornerFlags(flags);
if (rounding <= 0.0f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
{
AddImage(user_texture_id, p_min, p_max, uv_min, uv_max, col);
return;

1
imgui_internal.h
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@ -694,7 +694,6 @@ struct ImChunkStream
//
// Rendering circles with an odd number of segments, while mathematically correct will produce
// asymmetrical results on the raster grid. Therefore we're rounding N to next even number (7->8, 8->8, 9->10 etc.)
//
#define IM_ROUNDUP_TO_EVEN(_V) ((((_V) + 1) / 2) * 2)
#define IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MIN 4
#define IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX 512