1 files changed, 79 insertions, 0 deletions
diff --git a/src/libdraw/md-mkcmap.c b/src/libdraw/md-mkcmap.c
new file mode 100644
index 00000000..e8d5efc3
--- /dev/null
+++ b/src/libdraw/md-mkcmap.c
@@ -0,0 +1,79 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+#include <memdraw.h>
+
+/*
+struct Memcmap
+{
+	uchar	cmap2rgb[3*256];
+	uchar	rgb2cmap[16*16*16];
+};
+*/
+
+static Memcmap*
+mkcmap(void)
+{
+	static Memcmap def;
+
+	int i, rgb, r, g, b;
+
+	for(i=0; i<256; i++){
+		rgb = cmap2rgb(i);
+		r = (rgb>>16)&0xff;
+		g = (rgb>>8)&0xff;
+		b = rgb&0xff;
+		def.cmap2rgb[3*i] = r;
+		def.cmap2rgb[3*i+1] = g;
+		def.cmap2rgb[3*i+2] = b;
+	}
+
+	for(r=0; r<16; r++)
+	for(g=0; g<16; g++)
+	for(b=0; b<16; b++)
+		def.rgb2cmap[r*16*16+g*16+b] = rgb2cmap(r*0x11, g*0x11, b*0x11);
+	return &def;
+}
+
+void
+main(int argc, char **argv)
+{
+	Memcmap *c;
+	int i, j, inferno;
+
+	inferno = 0;
+	ARGBEGIN{
+	case 'i':
+		inferno = 1;
+	}ARGEND
+
+	memimageinit();
+	c = mkcmap();
+	if(!inferno)
+		print("#include <u.h>\n#include <libc.h>\n");
+	else
+		print("#include \"lib9.h\"\n");
+	print("#include <draw.h>\n");
+	print("#include <memdraw.h>\n\n");
+	print("static Memcmap def = {\n");
+	print("/* cmap2rgb */ {\n");
+	for(i=0; i<sizeof(c->cmap2rgb); ){
+		print("\t");
+		for(j=0; j<16; j++, i++)
+			print("0x%2.2ux,", c->cmap2rgb[i]);
+		print("\n");
+	}
+	print("},\n");
+	print("/* rgb2cmap */ {\n");
+	for(i=0; i<sizeof(c->rgb2cmap);){
+		print("\t");
+		for(j=0; j<16; j++, i++)
+			print("0x%2.2ux,", c->rgb2cmap[i]);
+		print("\n");
+	}
+	print("}\n");
+	print("};\n");
+	print("Memcmap *memdefcmap = &def;\n");
+	print("void _memmkcmap(void){}\n");
+	exits(0);
+}