InputText: Fixed password fields displaying ASCII spaces as blanks. Fixed non-ASCII space occasionally creating unnecessary empty polygons. (#2149, #515)

imgui.h

@@ -2068,9 +2068,12 @@ struct ImFontConfig
     IMGUI_API ImFontConfig();
 };
 
+// Hold rendering data for one glyph.
+// (Note: some language parsers may fail to convert the 31+1 bitfield members, in this case maybe drop store a single u32 or we can rework this)
 struct ImFontGlyph
 {
-    ImWchar         Codepoint;          // 0x0000..0xFFFF
+    unsigned int    Codepoint : 31;     // 0x0000..0xFFFF
+    unsigned int    Visible : 1;        // Flag to allow early out when rendering
     float           AdvanceX;           // Distance to next character (= data from font + ImFontConfig::GlyphExtraSpacing.x baked in)
     float           X0, Y0, X1, Y1;     // Glyph corners
     float           U0, V0, U1, V1;     // Texture coordinates
@@ -2265,6 +2268,7 @@ struct ImFont
     IMGUI_API void              GrowIndex(int new_size);
     IMGUI_API void              AddGlyph(ImWchar c, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float advance_x);
     IMGUI_API void              AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst = true); // Makes 'dst' character/glyph points to 'src' character/glyph. Currently needs to be called AFTER fonts have been built.
+    IMGUI_API void              SetGlyphVisible(ImWchar c, bool visible);
     IMGUI_API void              SetFallbackChar(ImWchar c);
 };