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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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4
imgui_internal.h
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@@ -545,6 +545,8 @@ struct IMGUI_API ImDrawListSharedData
ImVec2 ArcFastVtx[12 * IM_DRAWLIST_ARCFAST_TESSELLATION_MULTIPLIER]; // FIXME: Bake rounded corners fill/borders in atlas
ImU8 CircleSegmentCounts[64]; // Precomputed segment count for given radius (array index + 1) before we calculate it dynamically (to avoid calculation overhead)
ImVector<ImVec4>* TexUvAALines; // UV of anti-aliased lines in the atlas
ImDrawListSharedData();
void SetCircleSegmentMaxError(float max_error);
};
@@ -2018,8 +2020,10 @@ namespace ImGui
// ImFontAtlas internals
IMGUI_API bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas);
IMGUI_API void ImFontAtlasBuildInit(ImFontAtlas* atlas);
IMGUI_API void ImFontAtlasBuildRegisterAALineCustomRects(ImFontAtlas* atlas);
IMGUI_API void ImFontAtlasBuildSetupFont(ImFontAtlas* atlas, ImFont* font, ImFontConfig* font_config, float ascent, float descent);
IMGUI_API void ImFontAtlasBuildPackCustomRects(ImFontAtlas* atlas, void* stbrp_context_opaque);
IMGUI_API void ImFontAtlasBuildAALinesTexData(ImFontAtlas* atlas);
IMGUI_API void ImFontAtlasBuildFinish(ImFontAtlas* atlas);
IMGUI_API void ImFontAtlasBuildMultiplyCalcLookupTable(unsigned char out_table[256], float in_multiply_factor);
IMGUI_API void ImFontAtlasBuildMultiplyRectAlpha8(const unsigned char table[256], unsigned char* pixels, int x, int y, int w, int h, int stride);