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ImDrawList: Fixed an issue when draw command merging or cancelling while crossing the VtxOffset boundary would lead to draw command being emitted with wrong VtxOffset value. (#3129, #3163, #3232)

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thedmd 2020-06-06 16:37:07 +02:00 committed by ocornut
parent 78d5ccfb90
commit e22e3f300a
3 changed files with 26 additions and 11 deletions
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3
docs/CHANGELOG.txt
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@ -56,6 +56,9 @@ Other Changes:
BeginMenu()/EndMenu() or BeginPopup/EndPopup(). (#3223, #1207) [@rokups]
- Drag and Drop: Fixed unintended fallback "..." tooltip display during drag operation when
drag source uses _SourceNoPreviewTooltip flags. (#3160) [@rokups]
- ImDrawList: Fixed an issue when draw command merging or cancelling while crossing the VtxOffset
boundary would lead to draw command being emitted with wrong VtxOffset value. (#3129, #3163, #3232)
[@thedmd, @Shironekoben, @sergeyn, @ocornut]
- Misc, Freetype: Fix for rare case where FT_Get_Char_Index() succeed but FT_Load_Glyph() fails.
- CI: Added CI test to verify we're never accidentally dragging libstdc++ (on some compiler setups,
static constructors for non-pod data seems to drag in libstdc++ due to thread-safety concerns).

2
imgui.cpp
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@ -10267,7 +10267,7 @@ void ImGui::ShowMetricsWindow(bool* p_open)
ImDrawIdx* idx_buffer = (draw_list->IdxBuffer.Size > 0) ? draw_list->IdxBuffer.Data : NULL;
char buf[300];
ImFormatString(buf, IM_ARRAYSIZE(buf), "DrawCmd: %4d triangles, Tex 0x%p, ClipRect (%4.0f,%4.0f)-(%4.0f,%4.0f)",
ImFormatString(buf, IM_ARRAYSIZE(buf), "DrawCmd:%5d triangles, Tex 0x%p, ClipRect (%4.0f,%4.0f)-(%4.0f,%4.0f)",
pcmd->ElemCount/3, (void*)(intptr_t)pcmd->TextureId,
pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z, pcmd->ClipRect.w);
bool pcmd_node_open = ImGui::TreeNode((void*)(pcmd - draw_list->CmdBuffer.begin()), "%s", buf);

32
imgui_draw.cpp
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@ -460,11 +460,17 @@ void ImDrawList::UpdateClipRect()
}
// Try to merge with previous command if it matches, else use current command
ImDrawCmd* prev_cmd = CmdBuffer.Size > 1 ? curr_cmd - 1 : NULL;
if (curr_cmd->ElemCount == 0 && prev_cmd && memcmp(&prev_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) == 0 && prev_cmd->TextureId == GetCurrentTextureId() && prev_cmd->UserCallback == NULL)
CmdBuffer.pop_back();
else
curr_cmd->ClipRect = curr_clip_rect;
if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1)
{
ImDrawCmd* prev_cmd = curr_cmd - 1;
if (memcmp(&prev_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) == 0 && prev_cmd->VtxOffset == _VtxCurrentOffset && prev_cmd->TextureId == GetCurrentTextureId() && prev_cmd->UserCallback == NULL)
{
CmdBuffer.pop_back();
return;
}
}
curr_cmd->ClipRect = curr_clip_rect;
}
void ImDrawList::UpdateTextureID()
@ -479,11 +485,17 @@ void ImDrawList::UpdateTextureID()
}
// Try to merge with previous command if it matches, else use current command
ImDrawCmd* prev_cmd = CmdBuffer.Size > 1 ? curr_cmd - 1 : NULL;
if (curr_cmd->ElemCount == 0 && prev_cmd && prev_cmd->TextureId == curr_texture_id && memcmp(&prev_cmd->ClipRect, &GetCurrentClipRect(), sizeof(ImVec4)) == 0 && prev_cmd->UserCallback == NULL)
CmdBuffer.pop_back();
else
curr_cmd->TextureId = curr_texture_id;
if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1)
{
ImDrawCmd* prev_cmd = curr_cmd - 1;
if (prev_cmd->TextureId == curr_texture_id && memcmp(&prev_cmd->ClipRect, &GetCurrentClipRect(), sizeof(ImVec4)) == 0 && prev_cmd->VtxOffset == _VtxCurrentOffset && prev_cmd->UserCallback == NULL)
{
CmdBuffer.pop_back();
return;
}
}
curr_cmd->TextureId = curr_texture_id;
}
#undef GetCurrentClipRect