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Clipper, Tables: Improved error reporting when misusing the clipper inside a table + made the assert a better recoverable error. (#9350)

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Amend 20e040c8
This commit is contained in:
ocornut
2026-04-07 19:19:40 +02:00
parent 7cb0baeb77
commit 6985925244
2 changed files with 13 additions and 4 deletions
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docs/CHANGELOG.txt
+5
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@@ -48,6 +48,11 @@ Other Changes:
multi-line edit is clipped due to being out of view.
- Fonts:
- imgui_freetype: add FreeType headers & compiled version in 'About Dear ImGui' details.
- Clipper:
- Improved error reporting when misusing the clipper inside a table (prioritize
reporting the common clipper error over a table sanity check assert). (#9350)
- Tweaked assert triggering when first item height measurement fails, and made it
a better recoverable error. (#9350)
- Backends:
- Metal: avoid redundant vertex buffer bind in SetupRenderState, which leads
to validation issue. (#9343) [@Hunam6]
imgui.cpp
+8 -4
View File
@@ -3387,9 +3387,6 @@ static bool ImGuiListClipper_StepInternal(ImGuiListClipper* clipper)
if (clipper->ItemsHeight <= 0.0f)
{
IM_ASSERT(data->StepNo == 1);
if (table)
IM_ASSERT(table->RowPosY1 == clipper->StartPosY && table->RowPosY2 == window->DC.CursorPos.y);
bool affected_by_floating_point_precision = ImIsFloatAboveGuaranteedIntegerPrecision((float)clipper->StartPosY) || ImIsFloatAboveGuaranteedIntegerPrecision(window->DC.CursorPos.y);
if (affected_by_floating_point_precision)
{
@@ -3403,7 +3400,14 @@ static bool ImGuiListClipper_StepInternal(ImGuiListClipper* clipper)
}
if (clipper->ItemsHeight == 0.0f && clipper->ItemsCount == INT_MAX) // Accept that no item have been submitted if in indeterminate mode.
return false;
IM_ASSERT(clipper->ItemsHeight > 0.0f && "Unable to calculate item height! First item hasn't moved the cursor vertically!");
if (clipper->ItemsHeight <= 0.0f)
{
IM_ASSERT_USER_ERROR(clipper->ItemsHeight > 0.0f, "ImGuiListClipper: Failed to calculate item height! First item hasn't been submitted by user code, or has not moved the cursor vertically!");
return false;
}
if (table)
IM_ASSERT(table->RowPosY1 == clipper->StartPosY && table->RowPosY2 == window->DC.CursorPos.y);
calc_clipping = true; // If item height had to be calculated, calculate clipping afterwards.
}