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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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This commit is contained in:
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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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