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Texture-based thick lines: Initial version of AA line drawing using textures (press SHIFT to enable)

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Ben Carter
2020-01-13 14:24:55 +09:00
committed by omar
parent 8e4046e13b
commit 1d3c3070d8
5 changed files with 206 additions and 27 deletions
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6
imgui.cpp
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@ -935,6 +935,7 @@ ImGuiStyle::ImGuiStyle()
DisplaySafeAreaPadding = ImVec2(3,3); // If you cannot see the edge of your screen (e.g. on a TV) increase the safe area padding. Covers popups/tooltips as well regular windows.
MouseCursorScale = 1.0f; // Scale software rendered mouse cursor (when io.MouseDrawCursor is enabled). May be removed later.
AntiAliasedLines = true; // Enable anti-aliased lines/borders. Disable if you are really tight on CPU/GPU.
TexturedAntiAliasedLines= true; // Draw anti-aliased lines using textures where possible.
AntiAliasedFill = true; // Enable anti-aliased filled shapes (rounded rectangles, circles, etc.).
CurveTessellationTol = 1.25f; // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
CircleSegmentMaxError = 1.60f; // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or drawing rounded corner rectangles with no explicit segment count specified. Decrease for higher quality but more geometry.
@ -3688,10 +3689,14 @@ void ImGui::NewFrame()
g.DrawListSharedData.InitialFlags = ImDrawListFlags_None;
if (g.Style.AntiAliasedLines)
g.DrawListSharedData.InitialFlags |= ImDrawListFlags_AntiAliasedLines;
if (g.Style.TexturedAntiAliasedLines)
g.DrawListSharedData.InitialFlags |= ImDrawListFlags_TexturedAALines;
if (g.Style.AntiAliasedFill)
g.DrawListSharedData.InitialFlags |= ImDrawListFlags_AntiAliasedFill;
if (g.IO.BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset)
g.DrawListSharedData.InitialFlags |= ImDrawListFlags_AllowVtxOffset;
if ((g.Style.TexturedAntiAliasedLines) && (!(g.Font->ContainerAtlas->Flags & ImFontAtlasFlags_NoAALines)))
g.DrawListSharedData.InitialFlags |= ImDrawListFlags_TexturedAALines;
g.BackgroundDrawList._ResetForNewFrame();
g.BackgroundDrawList.PushTextureID(g.IO.Fonts->TexID);
@ -6158,6 +6163,7 @@ void ImGui::SetCurrentFont(ImFont* font)
ImFontAtlas* atlas = g.Font->ContainerAtlas;
g.DrawListSharedData.TexUvWhitePixel = atlas->TexUvWhitePixel;
g.DrawListSharedData.TexUvAALines = &atlas->TexUvAALines;
g.DrawListSharedData.Font = g.Font;
g.DrawListSharedData.FontSize = g.FontSize;
}