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Skip rendering if alpha is 0.0

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This commit is contained in:
ocornut 2014-08-18 13:20:57 +01:00
parent c5dacee3a7
commit ca027e1754
1 changed files with 30 additions and 25 deletions
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55
imgui.cpp
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@ -1401,34 +1401,39 @@ void Render()
memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters)); memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
} }
// Render tooltip // Skip render altogether if alpha is 0.0
if (g.Tooltip[0]) // Note that vertex buffers have been created, so it is best practice that you don't call Begin/End in the first place.
if (g.Style.Alpha > 0.0f)
{ {
// Use a dummy window to render the tooltip // Render tooltip
ImGui::BeginTooltip(); if (g.Tooltip[0])
ImGui::TextUnformatted(g.Tooltip); {
ImGui::EndTooltip(); // Use a dummy window to render the tooltip
} ImGui::BeginTooltip();
ImGui::TextUnformatted(g.Tooltip);
ImGui::EndTooltip();
}
// Gather windows to render // Gather windows to render
g.RenderDrawLists.resize(0); g.RenderDrawLists.resize(0);
for (size_t i = 0; i != g.Windows.size(); i++) for (size_t i = 0; i != g.Windows.size(); i++)
{ {
ImGuiWindow* window = g.Windows[i]; ImGuiWindow* window = g.Windows[i];
if (window->Visible && (window->Flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Tooltip)) == 0) if (window->Visible && (window->Flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Tooltip)) == 0)
window->AddToRenderList(); window->AddToRenderList();
} }
for (size_t i = 0; i != g.Windows.size(); i++) for (size_t i = 0; i != g.Windows.size(); i++)
{ {
ImGuiWindow* window = g.Windows[i]; ImGuiWindow* window = g.Windows[i];
if (window->Visible && (window->Flags & ImGuiWindowFlags_Tooltip)) if (window->Visible && (window->Flags & ImGuiWindowFlags_Tooltip))
window->AddToRenderList(); window->AddToRenderList();
} }
// Render // Render
if (!g.RenderDrawLists.empty()) if (!g.RenderDrawLists.empty())
g.IO.RenderDrawListsFn(&g.RenderDrawLists[0], (int)g.RenderDrawLists.size()); g.IO.RenderDrawListsFn(&g.RenderDrawLists[0], (int)g.RenderDrawLists.size());
g.RenderDrawLists.resize(0); g.RenderDrawLists.resize(0);
}
} }
// Find the optional ## from which we stop displaying text. // Find the optional ## from which we stop displaying text.