Patch for openmotif. This expands FIX_1536 (color caching) to also be used for drawing text. This is especially important for macOS performance. See https://github.com/justinmeiners/classic-colors/issues/12 for history.

text_perf_fix_like_1536.patch

Subject: [PATCH] XmRenderT: extend FIX_1536 color caching to text drawing

FIX_1536 introduced a cached XftColor path to avoid repeated
XQueryColor calls. However this optimization was not applied
to text drawing paths.

Apply the same cached path to _XmXftDrawString and
_XmXftDrawString2.

--- a/lib/Xm/XmRenderT.c
+++ b/lib/Xm/XmRenderT.c
@@ -2975,7 +2975,9 @@ _XmXftDrawString2(Display *display, Window window, GC gc, XftFont *font, int bpc
     XftColor xftcol;
     
     XGetGCValues(display, gc, GCForeground, &gc_val);
-
+#ifdef FIX_1536
+    xftcol = _XmXftGetXftColor(display, gc_val.foreground);
+#else
     xcol.pixel = gc_val.foreground;
     XQueryColor(display, DefaultColormap(display,
         DefaultScreen(display)), &xcol);
@@ -2983,6 +2985,7 @@ _XmXftDrawString2(Display *display, Window window, GC gc, XftFont *font, int bpc
     xftcol.color.blue = xcol.blue;
     xftcol.color.green = xcol.green;
     xftcol.color.alpha = 0xFFFF;
+#endif
 
     switch (bpc)
     {
@@ -3049,6 +3052,9 @@ _XmXftDrawString(Display *display, Window window, XmRendition rend, int bpc,
 	    XColor xcol;
 
 	    XGetGCValues(display, _XmRendGC(rend), GCBackground, &gc_val);
+  #ifdef FIX_1536
+      bg_color = _XmXftGetXftColor(display, gc_val.background);
+  #else
 	    xcol.pixel = gc_val.background;
             XQueryColor(display, DefaultColormapOfScreen(
                   DefaultScreenOfDisplay(display)), &xcol);
@@ -3057,6 +3063,7 @@ _XmXftDrawString(Display *display, Window window, XmRendition rend, int bpc,
 	    bg_color.color.green = xcol.green;
 	    bg_color.color.blue = xcol.blue;
 	    bg_color.color.alpha = 0xFFFF;
+  #endif
 	}
 #ifdef FIX_1451
         XftDrawRect(draw, &bg_color, x, y - _XmRendXftFont(rend)->ascent,
@@ -3076,6 +3083,9 @@ _XmXftDrawString(Display *display, Window window, XmRendition rend, int bpc,
         XGCValues gc_val;
 	XColor xcol;
 	XGetGCValues(display, _XmRendGC(rend), GCForeground, &gc_val);
+#ifdef FIX_1536
+  fg_color = _XmXftGetXftColor(display, gc_val.foreground);
+#else
 	xcol.pixel = gc_val.foreground;
         XQueryColor(display, DefaultColormapOfScreen(
               DefaultScreenOfDisplay(display)), &xcol);
@@ -3084,6 +3094,7 @@ _XmXftDrawString(Display *display, Window window, XmRendition rend, int bpc,
 	fg_color.color.green = xcol.green;
 	fg_color.color.blue = xcol.blue;
 	fg_color.color.alpha = 0xFFFF;
+#endif
     }
 
     switch (bpc)