Added Multi-channel SDF rendering option to texturev (#1006)

tools/texturev/fs_texture_sdf.bin.h

@@ -0,0 +1,194 @@
+static const uint8_t fs_texture_sdf_glsl[647] =
+{
+	0x46, 0x53, 0x48, 0x04, 0x01, 0x83, 0xf2, 0xe1, 0x02, 0x00, 0x0a, 0x73, 0x5f, 0x74, 0x65, 0x78, // FSH........s_tex
+	0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x08, 0x75, 0x5f, 0x70, 0x61, // Color.......u_pa
+	0x72, 0x61, 0x6d, 0x73, 0x02, 0x01, 0x00, 0x00, 0x01, 0x00, 0x58, 0x02, 0x00, 0x00, 0x76, 0x61, // rams......X...va
+	0x72, 0x79, 0x69, 0x6e, 0x67, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, 0x20, 0x76, 0x65, 0x63, 0x32, // rying highp vec2
+	0x20, 0x76, 0x5f, 0x74, 0x65, 0x78, 0x63, 0x6f, 0x6f, 0x72, 0x64, 0x30, 0x3b, 0x0a, 0x75, 0x6e, //  v_texcoord0;.un
+	0x69, 0x66, 0x6f, 0x72, 0x6d, 0x20, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x72, 0x32, 0x44, 0x20, // iform sampler2D 
+	0x73, 0x5f, 0x74, 0x65, 0x78, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x3b, 0x0a, 0x75, 0x6e, 0x69, 0x66, // s_texColor;.unif
+	0x6f, 0x72, 0x6d, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, 0x20, 0x76, 0x65, 0x63, 0x34, 0x20, 0x75, // orm highp vec4 u
+	0x5f, 0x70, 0x61, 0x72, 0x61, 0x6d, 0x73, 0x3b, 0x0a, 0x76, 0x6f, 0x69, 0x64, 0x20, 0x6d, 0x61, // _params;.void ma
+	0x69, 0x6e, 0x20, 0x28, 0x29, 0x0a, 0x7b, 0x0a, 0x20, 0x20, 0x6c, 0x6f, 0x77, 0x70, 0x20, 0x76, // in ().{.  lowp v
+	0x65, 0x63, 0x33, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x3b, 0x0a, 0x20, 0x20, // ec3 tmpvar_1;.  
+	0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x20, 0x3d, 0x20, 0x74, 0x65, 0x78, 0x74, 0x75, // tmpvar_1 = textu
+	0x72, 0x65, 0x32, 0x44, 0x4c, 0x6f, 0x64, 0x20, 0x20, 0x20, 0x20, 0x28, 0x73, 0x5f, 0x74, 0x65, // re2DLod    (s_te
+	0x78, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x2c, 0x20, 0x76, 0x5f, 0x74, 0x65, 0x78, 0x63, 0x6f, 0x6f, // xColor, v_texcoo
+	0x72, 0x64, 0x30, 0x2c, 0x20, 0x75, 0x5f, 0x70, 0x61, 0x72, 0x61, 0x6d, 0x73, 0x2e, 0x78, 0x29, // rd0, u_params.x)
+	0x2e, 0x78, 0x79, 0x7a, 0x3b, 0x0a, 0x20, 0x20, 0x6c, 0x6f, 0x77, 0x70, 0x20, 0x66, 0x6c, 0x6f, // .xyz;.  lowp flo
+	0x61, 0x74, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x3b, 0x0a, 0x20, 0x20, 0x74, // at tmpvar_2;.  t
+	0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x20, 0x3d, 0x20, 0x28, 0x6d, 0x61, 0x78, 0x20, 0x28, // mpvar_2 = (max (
+	0x6d, 0x69, 0x6e, 0x20, 0x28, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x78, 0x2c, // min (tmpvar_1.x,
+	0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x79, 0x29, 0x2c, 0x20, 0x6d, 0x69, //  tmpvar_1.y), mi
+	0x6e, 0x20, 0x28, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x6d, 0x61, 0x78, 0x20, 0x28, 0x74, 0x6d, 0x70, // n (.    max (tmp
+	0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x78, 0x2c, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, // var_1.x, tmpvar_
+	0x31, 0x2e, 0x79, 0x29, 0x0a, 0x20, 0x20, 0x2c, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, // 1.y).  , tmpvar_
+	0x31, 0x2e, 0x7a, 0x29, 0x29, 0x20, 0x2d, 0x20, 0x30, 0x2e, 0x35, 0x29, 0x3b, 0x0a, 0x20, 0x20, // 1.z)) - 0.5);.  
+	0x6c, 0x6f, 0x77, 0x70, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, // lowp float tmpva
+	0x72, 0x5f, 0x33, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x33, 0x20, // r_3;.  tmpvar_3 
+	0x3d, 0x20, 0x63, 0x6c, 0x61, 0x6d, 0x70, 0x20, 0x28, 0x28, 0x28, 0x74, 0x6d, 0x70, 0x76, 0x61, // = clamp (((tmpva
+	0x72, 0x5f, 0x32, 0x20, 0x2f, 0x20, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x28, 0x61, 0x62, 0x73, 0x28, // r_2 / .    (abs(
+	0x64, 0x46, 0x64, 0x78, 0x28, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x29, 0x29, 0x20, // dFdx(tmpvar_2)) 
+	0x2b, 0x20, 0x61, 0x62, 0x73, 0x28, 0x64, 0x46, 0x64, 0x79, 0x28, 0x74, 0x6d, 0x70, 0x76, 0x61, // + abs(dFdy(tmpva
+	0x72, 0x5f, 0x32, 0x29, 0x29, 0x29, 0x0a, 0x20, 0x20, 0x29, 0x20, 0x2b, 0x20, 0x30, 0x2e, 0x35, // r_2))).  ) + 0.5
+	0x29, 0x2c, 0x20, 0x30, 0x2e, 0x30, 0x2c, 0x20, 0x31, 0x2e, 0x30, 0x29, 0x3b, 0x0a, 0x20, 0x20, // ), 0.0, 1.0);.  
+	0x6d, 0x65, 0x64, 0x69, 0x75, 0x6d, 0x70, 0x20, 0x76, 0x65, 0x63, 0x34, 0x20, 0x74, 0x6d, 0x70, // mediump vec4 tmp
+	0x76, 0x61, 0x72, 0x5f, 0x34, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, // var_4;.  tmpvar_
+	0x34, 0x20, 0x3d, 0x20, 0x6d, 0x69, 0x78, 0x20, 0x28, 0x76, 0x65, 0x63, 0x34, 0x28, 0x31, 0x2e, // 4 = mix (vec4(1.
+	0x30, 0x2c, 0x20, 0x31, 0x2e, 0x30, 0x2c, 0x20, 0x31, 0x2e, 0x30, 0x2c, 0x20, 0x31, 0x2e, 0x30, // 0, 1.0, 1.0, 1.0
+	0x29, 0x2c, 0x20, 0x76, 0x65, 0x63, 0x34, 0x28, 0x30, 0x2e, 0x30, 0x2c, 0x20, 0x30, 0x2e, 0x30, // ), vec4(0.0, 0.0
+	0x2c, 0x20, 0x30, 0x2e, 0x30, 0x2c, 0x20, 0x31, 0x2e, 0x30, 0x29, 0x2c, 0x20, 0x74, 0x6d, 0x70, // , 0.0, 1.0), tmp
+	0x76, 0x61, 0x72, 0x5f, 0x33, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x67, 0x6c, 0x5f, 0x46, 0x72, 0x61, // var_3);.  gl_Fra
+	0x67, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x20, 0x3d, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, // gColor = tmpvar_
+	0x34, 0x3b, 0x0a, 0x7d, 0x0a, 0x0a, 0x00,                                                       // 4;.}...
+};
+static const uint8_t fs_texture_sdf_dx9[533] =
+{
+	0x46, 0x53, 0x48, 0x04, 0x01, 0x83, 0xf2, 0xe1, 0x02, 0x00, 0x0a, 0x73, 0x5f, 0x74, 0x65, 0x78, // FSH........s_tex
+	0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x01, 0x00, 0x00, 0x01, 0x00, 0x08, 0x75, 0x5f, 0x70, 0x61, // Color0......u_pa
+	0x72, 0x61, 0x6d, 0x73, 0x12, 0x01, 0x00, 0x00, 0x01, 0x00, 0xe8, 0x01, 0x00, 0x03, 0xff, 0xff, // rams............
+	0xfe, 0xff, 0x2e, 0x00, 0x43, 0x54, 0x41, 0x42, 0x1c, 0x00, 0x00, 0x00, 0x83, 0x00, 0x00, 0x00, // ....CTAB........
+	0x00, 0x03, 0xff, 0xff, 0x02, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x91, 0x00, 0x00, // ................
+	0x7c, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02, 0x00, // |...D...........
+	0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, // P.......`.......
+	0x01, 0x00, 0x00, 0x00, 0x6c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x73, 0x5f, 0x74, 0x65, // ....l.......s_te
+	0x78, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x00, 0xab, 0x04, 0x00, 0x0c, 0x00, 0x01, 0x00, 0x01, 0x00, // xColor..........
+	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x5f, 0x70, 0x61, 0x72, 0x61, 0x6d, 0x73, // ........u_params
+	0x00, 0xab, 0xab, 0xab, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x04, 0x00, 0x01, 0x00, 0x00, 0x00, // ................
+	0x00, 0x00, 0x00, 0x00, 0x70, 0x73, 0x5f, 0x33, 0x5f, 0x30, 0x00, 0x4d, 0x69, 0x63, 0x72, 0x6f, // ....ps_3_0.Micro
+	0x73, 0x6f, 0x66, 0x74, 0x20, 0x28, 0x52, 0x29, 0x20, 0x48, 0x4c, 0x53, 0x4c, 0x20, 0x53, 0x68, // soft (R) HLSL Sh
+	0x61, 0x64, 0x65, 0x72, 0x20, 0x43, 0x6f, 0x6d, 0x70, 0x69, 0x6c, 0x65, 0x72, 0x20, 0x39, 0x2e, // ader Compiler 9.
+	0x32, 0x39, 0x2e, 0x39, 0x35, 0x32, 0x2e, 0x33, 0x31, 0x31, 0x31, 0x00, 0x51, 0x00, 0x00, 0x05, // 29.952.3111.Q...
+	0x01, 0x00, 0x0f, 0xa0, 0x00, 0x00, 0x80, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xbf, // .......?........
+	0x00, 0x00, 0x00, 0x3f, 0x51, 0x00, 0x00, 0x05, 0x02, 0x00, 0x0f, 0xa0, 0x00, 0x00, 0x80, 0xbf, // ...?Q...........
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x00, 0x00, 0x02, // .......?........
+	0x05, 0x00, 0x00, 0x80, 0x00, 0x00, 0x03, 0x90, 0x1f, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x90, // ................
+	0x00, 0x08, 0x0f, 0xa0, 0x05, 0x00, 0x00, 0x03, 0x00, 0x00, 0x07, 0x80, 0x01, 0x00, 0xd0, 0xa0, // ................
+	0x00, 0x00, 0xc4, 0x90, 0x01, 0x00, 0x00, 0x02, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x00, 0xa0, // ................
+	0x5f, 0x00, 0x00, 0x03, 0x00, 0x00, 0x0f, 0x80, 0x00, 0x00, 0xe4, 0x80, 0x00, 0x08, 0xe4, 0xa0, // _...............
+	0x02, 0x00, 0x00, 0x03, 0x00, 0x00, 0x08, 0x80, 0x00, 0x00, 0x55, 0x81, 0x00, 0x00, 0x00, 0x80, // ..........U.....
+	0x58, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03, 0x80, 0x00, 0x00, 0xff, 0x80, 0x00, 0x00, 0xe1, 0x80, // X...............
+	0x00, 0x00, 0xe4, 0x80, 0x0a, 0x00, 0x00, 0x03, 0x01, 0x00, 0x01, 0x80, 0x00, 0x00, 0xaa, 0x80, // ................
+	0x00, 0x00, 0x55, 0x80, 0x0b, 0x00, 0x00, 0x03, 0x02, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x80, // ..U.............
+	0x01, 0x00, 0x00, 0x80, 0x02, 0x00, 0x00, 0x03, 0x00, 0x00, 0x01, 0x80, 0x02, 0x00, 0x00, 0x80, // ................
+	0x01, 0x00, 0xaa, 0xa0, 0x5b, 0x00, 0x00, 0x02, 0x00, 0x00, 0x02, 0x80, 0x00, 0x00, 0x00, 0x80, // ....[...........
+	0x5c, 0x00, 0x00, 0x02, 0x00, 0x00, 0x04, 0x80, 0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x00, 0x03, // ................
+	0x00, 0x00, 0x02, 0x80, 0x00, 0x00, 0xaa, 0x8b, 0x00, 0x00, 0x55, 0x8b, 0x06, 0x00, 0x00, 0x02, // ..........U.....
+	0x00, 0x00, 0x02, 0x80, 0x00, 0x00, 0x55, 0x80, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, 0x11, 0x80, // ......U.........
+	0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x55, 0x80, 0x01, 0x00, 0xff, 0xa0, 0x04, 0x00, 0x00, 0x04, // ......U.........
+	0x00, 0x08, 0x0f, 0x80, 0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x40, 0xa0, 0x02, 0x00, 0xaa, 0xa0, // ..........@.....
+	0xff, 0xff, 0x00, 0x00, 0x00,                                                                   // .....
+};
+static const uint8_t fs_texture_sdf_dx11[708] =
+{
+	0x46, 0x53, 0x48, 0x04, 0x01, 0x83, 0xf2, 0xe1, 0x02, 0x00, 0x08, 0x75, 0x5f, 0x70, 0x61, 0x72, // FSH........u_par
+	0x61, 0x6d, 0x73, 0x12, 0x00, 0x00, 0x00, 0x01, 0x00, 0x0a, 0x73, 0x5f, 0x74, 0x65, 0x78, 0x43, // ams.......s_texC
+	0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x01, 0x00, 0x00, 0x01, 0x00, 0x94, 0x02, 0x44, 0x58, 0x42, 0x43, // olor0.......DXBC
+	0xfa, 0x89, 0x1e, 0xd3, 0xdd, 0xf3, 0x5c, 0xf1, 0xc3, 0xff, 0x7f, 0xa1, 0xd8, 0xa1, 0x03, 0x00, // ................
+	0x01, 0x00, 0x00, 0x00, 0x94, 0x02, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00, // ............,...
+	0xa0, 0x00, 0x00, 0x00, 0xd4, 0x00, 0x00, 0x00, 0x49, 0x53, 0x47, 0x4e, 0x6c, 0x00, 0x00, 0x00, // ........ISGNl...
+	0x03, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ........P.......
+	0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, // ................
+	0x5c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, // ................
+	0x01, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x62, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ........b.......
+	0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x03, 0x03, 0x00, 0x00, // ................
+	0x53, 0x56, 0x5f, 0x50, 0x4f, 0x53, 0x49, 0x54, 0x49, 0x4f, 0x4e, 0x00, 0x43, 0x4f, 0x4c, 0x4f, // SV_POSITION.COLO
+	0x52, 0x00, 0x54, 0x45, 0x58, 0x43, 0x4f, 0x4f, 0x52, 0x44, 0x00, 0xab, 0x4f, 0x53, 0x47, 0x4e, // R.TEXCOORD..OSGN
+	0x2c, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, // ,........... ...
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ................
+	0x0f, 0x00, 0x00, 0x00, 0x53, 0x56, 0x5f, 0x54, 0x41, 0x52, 0x47, 0x45, 0x54, 0x00, 0xab, 0xab, // ....SV_TARGET...
+	0x53, 0x48, 0x44, 0x52, 0xb8, 0x01, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x6e, 0x00, 0x00, 0x00, // [email protected]...
+	0x59, 0x00, 0x00, 0x04, 0x46, 0x8e, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, // Y...F. .........
+	0x5a, 0x00, 0x00, 0x03, 0x00, 0x60, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x58, 0x18, 0x00, 0x04, // Z....`......X...
+	0x00, 0x70, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x00, 0x00, 0x62, 0x10, 0x00, 0x03, // .p......UU..b...
+	0x32, 0x10, 0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x65, 0x00, 0x00, 0x03, 0xf2, 0x20, 0x10, 0x00, // 2.......e.... ..
+	0x00, 0x00, 0x00, 0x00, 0x68, 0x00, 0x00, 0x02, 0x01, 0x00, 0x00, 0x00, 0x48, 0x00, 0x00, 0x0c, // ....h.......H...
+	0xf2, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x10, 0x10, 0x00, 0x02, 0x00, 0x00, 0x00, // ........F.......
+	0x46, 0x7e, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, // F~.......`......
+	0x0a, 0x80, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x07, // .. .........4...
+	0x82, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1a, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, // ................
+	0x0a, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x00, 0x00, 0x07, 0x52, 0x00, 0x10, 0x00, // ........3...R...
+	0x00, 0x00, 0x00, 0x00, 0x56, 0x06, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x03, 0x10, 0x00, // ....V...........
+	0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x07, 0x12, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, // ....4...........
+	0x2a, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, // *...............
+	0x00, 0x00, 0x00, 0x07, 0x12, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x10, 0x00, // ................
+	0x00, 0x00, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0xbf, 0x0b, 0x00, 0x00, 0x05, // .....@..........
+	0x22, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, // "...............
+	0x0c, 0x00, 0x00, 0x05, 0x42, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x10, 0x00, // ....B...........
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x22, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, // ........".......
+	0x2a, 0x00, 0x10, 0x80, 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1a, 0x00, 0x10, 0x80, // *...............
+	0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x00, 0x07, 0x12, 0x00, 0x10, 0x00, // ................
+	0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1a, 0x00, 0x10, 0x00, // ................
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x07, 0x12, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, // ..... ..........
+	0x0a, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, // .........@.....?
+	0x32, 0x00, 0x00, 0x0f, 0xf2, 0x20, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x10, 0x00, // 2.... ..........
+	0x00, 0x00, 0x00, 0x00, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, 0x80, 0xbf, 0x00, 0x00, 0x80, 0xbf, // .....@..........
+	0x00, 0x00, 0x80, 0xbf, 0x00, 0x00, 0x00, 0x00, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, 0x80, 0x3f, // .........@.....?
+	0x00, 0x00, 0x80, 0x3f, 0x00, 0x00, 0x80, 0x3f, 0x00, 0x00, 0x80, 0x3f, 0x3e, 0x00, 0x00, 0x01, // ...?...?...?>...
+	0x00, 0x00, 0x10, 0x00,                                                                         // ....
+};
+static const uint8_t fs_texture_sdf_mtl[955] =
+{
+	0x46, 0x53, 0x48, 0x04, 0x01, 0x83, 0xf2, 0xe1, 0x00, 0x00, 0xac, 0x03, 0x00, 0x00, 0x75, 0x73, // FSH...........us
+	0x69, 0x6e, 0x67, 0x20, 0x6e, 0x61, 0x6d, 0x65, 0x73, 0x70, 0x61, 0x63, 0x65, 0x20, 0x6d, 0x65, // ing namespace me
+	0x74, 0x61, 0x6c, 0x3b, 0x0a, 0x73, 0x74, 0x72, 0x75, 0x63, 0x74, 0x20, 0x78, 0x6c, 0x61, 0x74, // tal;.struct xlat
+	0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x49, 0x6e, 0x70, 0x75, 0x74, 0x20, 0x7b, // MtlShaderInput {
+	0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x32, 0x20, 0x76, 0x5f, 0x74, 0x65, 0x78, 0x63, // .  float2 v_texc
+	0x6f, 0x6f, 0x72, 0x64, 0x30, 0x3b, 0x0a, 0x7d, 0x3b, 0x0a, 0x73, 0x74, 0x72, 0x75, 0x63, 0x74, // oord0;.};.struct
+	0x20, 0x78, 0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x4f, 0x75, //  xlatMtlShaderOu
+	0x74, 0x70, 0x75, 0x74, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x68, 0x61, 0x6c, 0x66, 0x34, 0x20, 0x67, // tput {.  half4 g
+	0x6c, 0x5f, 0x46, 0x72, 0x61, 0x67, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x3b, 0x0a, 0x7d, 0x3b, 0x0a, // l_FragColor;.};.
+	0x73, 0x74, 0x72, 0x75, 0x63, 0x74, 0x20, 0x78, 0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, // struct xlatMtlSh
+	0x61, 0x64, 0x65, 0x72, 0x55, 0x6e, 0x69, 0x66, 0x6f, 0x72, 0x6d, 0x20, 0x7b, 0x0a, 0x20, 0x20, // aderUniform {.  
+	0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x20, 0x75, 0x5f, 0x70, 0x61, 0x72, 0x61, 0x6d, 0x73, 0x3b, // float4 u_params;
+	0x0a, 0x7d, 0x3b, 0x0a, 0x66, 0x72, 0x61, 0x67, 0x6d, 0x65, 0x6e, 0x74, 0x20, 0x78, 0x6c, 0x61, // .};.fragment xla
+	0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x4f, 0x75, 0x74, 0x70, 0x75, 0x74, // tMtlShaderOutput
+	0x20, 0x78, 0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x4d, 0x61, 0x69, 0x6e, 0x20, 0x28, 0x78, 0x6c, //  xlatMtlMain (xl
+	0x61, 0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x49, 0x6e, 0x70, 0x75, 0x74, // atMtlShaderInput
+	0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x69, 0x20, 0x5b, 0x5b, 0x73, 0x74, 0x61, 0x67, 0x65, 0x5f, //  _mtl_i [[stage_
+	0x69, 0x6e, 0x5d, 0x5d, 0x2c, 0x20, 0x63, 0x6f, 0x6e, 0x73, 0x74, 0x61, 0x6e, 0x74, 0x20, 0x78, // in]], constant x
+	0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x55, 0x6e, 0x69, 0x66, // latMtlShaderUnif
+	0x6f, 0x72, 0x6d, 0x26, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x75, 0x20, 0x5b, 0x5b, 0x62, 0x75, // orm& _mtl_u [[bu
+	0x66, 0x66, 0x65, 0x72, 0x28, 0x30, 0x29, 0x5d, 0x5d, 0x0a, 0x20, 0x20, 0x2c, 0x20, 0x20, 0x20, // ffer(0)]].  ,   
+	0x74, 0x65, 0x78, 0x74, 0x75, 0x72, 0x65, 0x32, 0x64, 0x3c, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x3e, // texture2d<float>
+	0x20, 0x73, 0x5f, 0x74, 0x65, 0x78, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x20, 0x5b, 0x5b, 0x74, 0x65, //  s_texColor [[te
+	0x78, 0x74, 0x75, 0x72, 0x65, 0x28, 0x30, 0x29, 0x5d, 0x5d, 0x2c, 0x20, 0x73, 0x61, 0x6d, 0x70, // xture(0)]], samp
+	0x6c, 0x65, 0x72, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x73, 0x6d, 0x70, 0x5f, 0x73, 0x5f, 0x74, 0x65, // ler _mtlsmp_s_te
+	0x78, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x20, 0x5b, 0x5b, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x72, // xColor [[sampler
+	0x28, 0x30, 0x29, 0x5d, 0x5d, 0x29, 0x0a, 0x7b, 0x0a, 0x20, 0x20, 0x78, 0x6c, 0x61, 0x74, 0x4d, // (0)]]).{.  xlatM
+	0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x4f, 0x75, 0x74, 0x70, 0x75, 0x74, 0x20, 0x5f, // tlShaderOutput _
+	0x6d, 0x74, 0x6c, 0x5f, 0x6f, 0x3b, 0x0a, 0x20, 0x20, 0x68, 0x61, 0x6c, 0x66, 0x34, 0x20, 0x74, // mtl_o;.  half4 t
+	0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, // mpvar_1;.  tmpva
+	0x72, 0x5f, 0x31, 0x20, 0x3d, 0x20, 0x68, 0x61, 0x6c, 0x66, 0x34, 0x28, 0x73, 0x5f, 0x74, 0x65, // r_1 = half4(s_te
+	0x78, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x2e, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x28, 0x5f, 0x6d, // xColor.sample(_m
+	0x74, 0x6c, 0x73, 0x6d, 0x70, 0x5f, 0x73, 0x5f, 0x74, 0x65, 0x78, 0x43, 0x6f, 0x6c, 0x6f, 0x72, // tlsmp_s_texColor
+	0x2c, 0x20, 0x28, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x32, 0x29, 0x28, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, // , (float2)(_mtl_
+	0x69, 0x2e, 0x76, 0x5f, 0x74, 0x65, 0x78, 0x63, 0x6f, 0x6f, 0x72, 0x64, 0x30, 0x29, 0x2c, 0x20, // i.v_texcoord0), 
+	0x6c, 0x65, 0x76, 0x65, 0x6c, 0x28, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x75, 0x2e, 0x75, 0x5f, 0x70, // level(_mtl_u.u_p
+	0x61, 0x72, 0x61, 0x6d, 0x73, 0x2e, 0x78, 0x29, 0x29, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x68, 0x61, // arams.x)));.  ha
+	0x6c, 0x66, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x3b, 0x0a, 0x20, 0x20, 0x74, // lf tmpvar_2;.  t
+	0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x20, 0x3d, 0x20, 0x28, 0x6d, 0x61, 0x78, 0x20, 0x28, // mpvar_2 = (max (
+	0x6d, 0x69, 0x6e, 0x20, 0x28, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x78, 0x2c, // min (tmpvar_1.x,
+	0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x79, 0x29, 0x2c, 0x20, 0x6d, 0x69, //  tmpvar_1.y), mi
+	0x6e, 0x20, 0x28, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x6d, 0x61, 0x78, 0x20, 0x28, 0x74, 0x6d, 0x70, // n (.    max (tmp
+	0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x78, 0x2c, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, // var_1.x, tmpvar_
+	0x31, 0x2e, 0x79, 0x29, 0x0a, 0x20, 0x20, 0x2c, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, // 1.y).  , tmpvar_
+	0x31, 0x2e, 0x7a, 0x29, 0x29, 0x20, 0x2d, 0x20, 0x28, 0x68, 0x61, 0x6c, 0x66, 0x29, 0x30, 0x2e, // 1.z)) - (half)0.
+	0x35, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x6f, 0x2e, 0x67, 0x6c, 0x5f, // 5);.  _mtl_o.gl_
+	0x46, 0x72, 0x61, 0x67, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x20, 0x3d, 0x20, 0x6d, 0x69, 0x78, 0x20, // FragColor = mix 
+	0x28, 0x28, 0x68, 0x61, 0x6c, 0x66, 0x34, 0x29, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x28, 0x31, // ((half4)float4(1
+	0x2e, 0x30, 0x2c, 0x20, 0x31, 0x2e, 0x30, 0x2c, 0x20, 0x31, 0x2e, 0x30, 0x2c, 0x20, 0x31, 0x2e, // .0, 1.0, 1.0, 1.
+	0x30, 0x29, 0x2c, 0x20, 0x28, 0x68, 0x61, 0x6c, 0x66, 0x34, 0x29, 0x66, 0x6c, 0x6f, 0x61, 0x74, // 0), (half4)float
+	0x34, 0x28, 0x30, 0x2e, 0x30, 0x2c, 0x20, 0x30, 0x2e, 0x30, 0x2c, 0x20, 0x30, 0x2e, 0x30, 0x2c, // 4(0.0, 0.0, 0.0,
+	0x20, 0x31, 0x2e, 0x30, 0x29, 0x2c, 0x20, 0x63, 0x6c, 0x61, 0x6d, 0x70, 0x20, 0x28, 0x28, 0x0a, //  1.0), clamp ((.
+	0x20, 0x20, 0x20, 0x20, 0x28, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x20, 0x2f, 0x20, //     (tmpvar_2 / 
+	0x28, 0x61, 0x62, 0x73, 0x28, 0x64, 0x66, 0x64, 0x78, 0x28, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, // (abs(dfdx(tmpvar
+	0x5f, 0x32, 0x29, 0x29, 0x20, 0x2b, 0x20, 0x61, 0x62, 0x73, 0x28, 0x64, 0x66, 0x64, 0x79, 0x28, // _2)) + abs(dfdy(
+	0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x29, 0x29, 0x29, 0x29, 0x0a, 0x20, 0x20, 0x20, // tmpvar_2)))).   
+	0x2b, 0x20, 0x28, 0x68, 0x61, 0x6c, 0x66, 0x29, 0x30, 0x2e, 0x35, 0x29, 0x2c, 0x20, 0x28, 0x68, // + (half)0.5), (h
+	0x61, 0x6c, 0x66, 0x29, 0x30, 0x2e, 0x30, 0x2c, 0x20, 0x28, 0x68, 0x61, 0x6c, 0x66, 0x29, 0x31, // alf)0.0, (half)1
+	0x2e, 0x30, 0x29, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x72, 0x65, 0x74, 0x75, 0x72, 0x6e, 0x20, 0x5f, // .0));.  return _
+	0x6d, 0x74, 0x6c, 0x5f, 0x6f, 0x3b, 0x0a, 0x7d, 0x0a, 0x0a, 0x00,                               // mtl_o;.}...
+};
+extern const uint8_t* fs_texture_sdf_pssl;
+extern const uint32_t fs_texture_sdf_pssl_size;

tools/texturev/fs_texture_sdf.sc

@@ -0,0 +1,27 @@
+$input v_texcoord0, v_color0
+
+/*
+ * Copyright 2011-2016 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#include <bgfx_shader.sh>
+
+SAMPLER2D(s_texColor, 0);
+
+uniform vec4 u_params;
+#define u_textureLod u_params.x
+
+float median(float r, float g, float b) {
+    return max(min(r, g), min(max(r, g), b));
+}
+
+void main() {
+	vec4 bgColor = vec4(1.0, 1.0, 1.0, 1.0);
+	vec4 fgColor = vec4(0.0, 0.0, 0.0, 1.0);
+
+    vec3 sample = texture2DLod(s_texColor, v_texcoord0, u_textureLod).rgb;
+    float sigDist = median(sample.r, sample.g, sample.b) - 0.5;
+    float opacity = clamp(sigDist/fwidth(sigDist) + 0.5, 0.0, 1.0);
+    gl_FragColor = mix(bgColor, fgColor, opacity);
+}

tools/texturev/texturev.cpp

@@ -33,6 +33,7 @@ namespace stl = tinystl;
 #include "fs_texture_array.bin.h"
 #include "vs_texture_cube.bin.h"
 #include "fs_texture_cube.bin.h"
+#include "fs_texture_sdf.bin.h"
 
 static const bgfx::EmbeddedShader s_embeddedShaders[] =
 {
@@ -41,6 +42,7 @@ static const bgfx::EmbeddedShader s_embeddedShaders[] =
 	BGFX_EMBEDDED_SHADER(fs_texture_array),
 	BGFX_EMBEDDED_SHADER(vs_texture_cube),
 	BGFX_EMBEDDED_SHADER(fs_texture_cube),
+	BGFX_EMBEDDED_SHADER(fs_texture_sdf),
 
 	BGFX_EMBEDDED_SHADER_END()
 };
@@ -108,6 +110,8 @@ static const InputBinding s_bindingView[] =
 
 	{ entry::Key::KeyH,      entry::Modifier::None,       1, NULL, "view help"        },
 
+	{ entry::Key::KeyS,      entry::Modifier::None,       1, NULL, "view sdf"         },
+
 	INPUT_BINDING_END
 };
 
@@ -137,6 +141,7 @@ struct View
 		, m_filter(true)
 		, m_alpha(false)
 		, m_help(false)
+		, m_sdf(false)
 	{
 	}
 
@@ -276,6 +281,10 @@ struct View
 					m_alpha = false;
 				}
 			}
+			else if (0 == strcmp(_argv[1], "sdf")) 
+			{
+				m_sdf ^= true;
+			}
 			else if (0 == strcmp(_argv[1], "help") )
 			{
 				m_help ^= true;
@@ -351,6 +360,7 @@ struct View
 	bool     m_filter;
 	bool     m_alpha;
 	bool     m_help;
+	bool     m_sdf;
 };
 
 int cmdView(CmdContext* /*_context*/, void* _userData, int _argc, char const* const* _argv)
@@ -685,6 +695,11 @@ int _main_(int _argc, char** _argv)
 			, true
 			);
 
+	bgfx::ProgramHandle textureSDFProgram = bgfx::createProgram(
+			  vsTexture
+			, bgfx::createEmbeddedShader(s_embeddedShaders, type, "fs_texture_sdf")
+			, true);
+
 	bgfx::UniformHandle s_texColor = bgfx::createUniform("s_texColor", bgfx::UniformType::Int1);
 	bgfx::UniformHandle u_mtx      = bgfx::createUniform("u_mtx",      bgfx::UniformType::Mat4);
 	bgfx::UniformHandle u_params   = bgfx::createUniform("u_params",   bgfx::UniformType::Vec4);
@@ -795,6 +810,10 @@ int _main_(int _argc, char** _argv)
 
 				ImGui::TextColored(ImVec4(1.0f, 1.0f, 0.0f, 1.0f), "r/g/b"); ImGui::SameLine(64); ImGui::Text("Toggle R, G, or B color channel.");
 				ImGui::TextColored(ImVec4(1.0f, 1.0f, 0.0f, 1.0f), "a");     ImGui::SameLine(64); ImGui::Text("Toggle alpha blending.");
+				ImGui::NextLine();
+
+				ImGui::TextColored(ImVec4(1.0f, 1.0f, 0.0f, 1.0f), "s");     ImGui::SameLine(64); ImGui::Text("Toggle Multi-channel SDF rendering");
+
 				ImGui::PopFont();
 
 				ImGui::NextLine();
@@ -911,7 +930,7 @@ int _main_(int _argc, char** _argv)
 				);
 			bgfx::submit(0, view.m_info.cubeMap ? textureCubeProgram
 					: 1 < view.m_info.numLayers ? textureArrayProgram
-												: textureProgram
+					: view.m_sdf ? textureSDFProgram : textureProgram
 					);
 
 			bgfx::frame();