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AA branch: added ImDrawData::DeIndexAllBuffers() helper (#254)

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This commit is contained in:
ocornut
2015-07-05 22:09:55 -06:00
parent b2b616be00
commit 0676efd37f
2 changed files with 26 additions and 0 deletions
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23
imgui.cpp
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@@ -9503,6 +9503,29 @@ void ImDrawList::AddImage(ImTextureID user_texture_id, const ImVec2& a, const Im
PopTextureID();
}
//-----------------------------------------------------------------------------
// ImDrawData
//-----------------------------------------------------------------------------
// For backward compatibility: convert all buffers from indexed to de-indexed, in case you cannot render indexed. Note: this is slow and most likely a waste of resources. Always prefer indexed rendering!
void ImDrawData::DeIndexAllBuffers()
{
ImVector<ImDrawVert> new_vtx_buffer;
total_vtx_count = total_idx_count = 0;
for (int i = 0; i < cmd_lists_count; i++)
{
ImDrawList* cmd_list = cmd_lists[i];
if (cmd_list->idx_buffer.empty())
continue;
new_vtx_buffer.resize(cmd_list->idx_buffer.size());
for (size_t i = 0; i < cmd_list->idx_buffer.size(); i++)
new_vtx_buffer[i] = cmd_list->vtx_buffer[cmd_list->idx_buffer[i]];
cmd_list->vtx_buffer.swap(new_vtx_buffer);
cmd_list->idx_buffer.resize(0);
total_vtx_count += (int)cmd_list->vtx_buffer.size();
}
}
//-----------------------------------------------------------------------------
// ImFontAtlias
//-----------------------------------------------------------------------------

3
imgui.h
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@@ -1095,6 +1095,9 @@ struct ImDrawData
int cmd_lists_count;
int total_vtx_count; // For convenience, sum of all cmd_lists vtx_buffer.size()
int total_idx_count; // For convenience, sum of all cmd_lists idx_buffer.size()
// Functions
void DeIndexAllBuffers(); // For backward compatibility: convert all buffers from indexed to de-indexed, in case you cannot render indexed. Note: this is slow and most likely a waste of resources. Always prefer indexed rendering!
};
// Load and rasterize multiple TTF fonts into a same texture.