Add line wrapping and support for arbitrarily long messages

Add trivial line wrapping algorithm. Words are only added to
a line if they don't put it over the column limit, and only broken if
they alone exceed the column limit.

Extend board size to 16x6, using 145 bits of parameter memory.

Add simple generate.sh script, which generates everything needed to
use the text-to-text board.

1 files changed, 51 insertions, 3 deletions

diff --git a/TaSTT.shader b/TaSTT.shader
index f5ec6af..3e1e19a 100644
--- a/TaSTT.shader
+++ b/TaSTT.shader
@@ -18,6 +18,8 @@
     _Letter_Row00_Col11("_Letter_Row00_Col11", float) = 0

     _Letter_Row00_Col12("_Letter_Row00_Col12", float) = 0

     _Letter_Row00_Col13("_Letter_Row00_Col13", float) = 0

+    _Letter_Row00_Col14("_Letter_Row00_Col14", float) = 0

+    _Letter_Row00_Col15("_Letter_Row00_Col15", float) = 0

     _Letter_Row01_Col00("_Letter_Row01_Col00", float) = 0

     _Letter_Row01_Col01("_Letter_Row01_Col01", float) = 0

     _Letter_Row01_Col02("_Letter_Row01_Col02", float) = 0

@@ -32,6 +34,8 @@
     _Letter_Row01_Col11("_Letter_Row01_Col11", float) = 0

     _Letter_Row01_Col12("_Letter_Row01_Col12", float) = 0

     _Letter_Row01_Col13("_Letter_Row01_Col13", float) = 0

+    _Letter_Row01_Col14("_Letter_Row01_Col14", float) = 0

+    _Letter_Row01_Col15("_Letter_Row01_Col15", float) = 0

     _Letter_Row02_Col00("_Letter_Row02_Col00", float) = 0

     _Letter_Row02_Col01("_Letter_Row02_Col01", float) = 0

     _Letter_Row02_Col02("_Letter_Row02_Col02", float) = 0

@@ -46,6 +50,8 @@
     _Letter_Row02_Col11("_Letter_Row02_Col11", float) = 0

     _Letter_Row02_Col12("_Letter_Row02_Col12", float) = 0

     _Letter_Row02_Col13("_Letter_Row02_Col13", float) = 0

+    _Letter_Row02_Col14("_Letter_Row02_Col14", float) = 0

+    _Letter_Row02_Col15("_Letter_Row02_Col15", float) = 0

     _Letter_Row03_Col00("_Letter_Row03_Col00", float) = 0

     _Letter_Row03_Col01("_Letter_Row03_Col01", float) = 0

     _Letter_Row03_Col02("_Letter_Row03_Col02", float) = 0

@@ -60,6 +66,8 @@
     _Letter_Row03_Col11("_Letter_Row03_Col11", float) = 0

     _Letter_Row03_Col12("_Letter_Row03_Col12", float) = 0

     _Letter_Row03_Col13("_Letter_Row03_Col13", float) = 0

+    _Letter_Row03_Col14("_Letter_Row03_Col14", float) = 0

+    _Letter_Row03_Col15("_Letter_Row03_Col15", float) = 0

     _Letter_Row04_Col00("_Letter_Row04_Col00", float) = 0

     _Letter_Row04_Col01("_Letter_Row04_Col01", float) = 0

     _Letter_Row04_Col02("_Letter_Row04_Col02", float) = 0

@@ -74,6 +82,8 @@
     _Letter_Row04_Col11("_Letter_Row04_Col11", float) = 0

     _Letter_Row04_Col12("_Letter_Row04_Col12", float) = 0

     _Letter_Row04_Col13("_Letter_Row04_Col13", float) = 0

+    _Letter_Row04_Col14("_Letter_Row04_Col14", float) = 0

+    _Letter_Row04_Col15("_Letter_Row04_Col15", float) = 0

     _Letter_Row05_Col00("_Letter_Row05_Col00", float) = 0

     _Letter_Row05_Col01("_Letter_Row05_Col01", float) = 0

     _Letter_Row05_Col02("_Letter_Row05_Col02", float) = 0

@@ -88,6 +98,8 @@
     _Letter_Row05_Col11("_Letter_Row05_Col11", float) = 0

     _Letter_Row05_Col12("_Letter_Row05_Col12", float) = 0

     _Letter_Row05_Col13("_Letter_Row05_Col13", float) = 0

+    _Letter_Row05_Col14("_Letter_Row05_Col14", float) = 0

+    _Letter_Row05_Col15("_Letter_Row05_Col15", float) = 0

   }

   SubShader

   {

@@ -132,6 +144,8 @@
       float _Letter_Row00_Col11;

       float _Letter_Row00_Col12;

       float _Letter_Row00_Col13;

+      float _Letter_Row00_Col14;

+      float _Letter_Row00_Col15;

       float _Letter_Row01_Col00;

       float _Letter_Row01_Col01;

       float _Letter_Row01_Col02;

@@ -146,6 +160,8 @@
       float _Letter_Row01_Col11;

       float _Letter_Row01_Col12;

       float _Letter_Row01_Col13;

+      float _Letter_Row01_Col14;

+      float _Letter_Row01_Col15;

       float _Letter_Row02_Col00;

       float _Letter_Row02_Col01;

       float _Letter_Row02_Col02;

@@ -160,6 +176,8 @@
       float _Letter_Row02_Col11;

       float _Letter_Row02_Col12;

       float _Letter_Row02_Col13;

+      float _Letter_Row02_Col14;

+      float _Letter_Row02_Col15;

       float _Letter_Row03_Col00;

       float _Letter_Row03_Col01;

       float _Letter_Row03_Col02;

@@ -174,6 +192,8 @@
       float _Letter_Row03_Col11;

       float _Letter_Row03_Col12;

       float _Letter_Row03_Col13;

+      float _Letter_Row03_Col14;

+      float _Letter_Row03_Col15;

       float _Letter_Row04_Col00;

       float _Letter_Row04_Col01;

       float _Letter_Row04_Col02;

@@ -188,6 +208,8 @@
       float _Letter_Row04_Col11;

       float _Letter_Row04_Col12;

       float _Letter_Row04_Col13;

+      float _Letter_Row04_Col14;

+      float _Letter_Row04_Col15;

       float _Letter_Row05_Col00;

       float _Letter_Row05_Col01;

       float _Letter_Row05_Col02;

@@ -202,6 +224,8 @@
       float _Letter_Row05_Col11;

       float _Letter_Row05_Col12;

       float _Letter_Row05_Col13;

+      float _Letter_Row05_Col14;

+      float _Letter_Row05_Col15;

 

       v2f vert (appdata v)

       {

@@ -223,7 +247,7 @@
         // Thus given UV, I need to know a few things:

         // 1. What grid cell I'm in. This is simply u * m, v * n.

         float CHAR_ROWS = 6.0;

-        float CHAR_COLS = 14.0;

+        float CHAR_COLS = 16.0;

         float CHAR_COL = floor(i.uv.x * CHAR_COLS);

         float CHAR_ROW = floor(i.uv.y * CHAR_ROWS);

 

@@ -263,7 +287,7 @@
       float GetLetterParameter(v2f i)

       {

         float CHAR_ROWS = 6.0;

-        float CHAR_COLS = 14.0;

+        float CHAR_COLS = 16.0;

         float CHAR_COL = floor(i.uv.x * CHAR_COLS);

         float CHAR_ROW = floor(i.uv.y * CHAR_ROWS);

 

@@ -297,6 +321,10 @@
             return _Letter_Row00_Col12;

           } else if (CHAR_COL == 13) {

             return _Letter_Row00_Col13;

+          } else if (CHAR_COL == 14) {

+            return _Letter_Row00_Col14;

+          } else if (CHAR_COL == 15) {

+            return _Letter_Row00_Col15;

           }

         } else if (CHAR_ROW == 4) {

           if (CHAR_COL == 0) {

@@ -327,6 +355,10 @@
             return _Letter_Row01_Col12;

           } else if (CHAR_COL == 13) {

             return _Letter_Row01_Col13;

+          } else if (CHAR_COL == 14) {

+            return _Letter_Row01_Col14;

+          } else if (CHAR_COL == 15) {

+            return _Letter_Row01_Col15;

           }

         } else if (CHAR_ROW == 3) {

           if (CHAR_COL == 0) {

@@ -357,6 +389,10 @@
             return _Letter_Row02_Col12;

           } else if (CHAR_COL == 13) {

             return _Letter_Row02_Col13;

+          } else if (CHAR_COL == 14) {

+            return _Letter_Row02_Col14;

+          } else if (CHAR_COL == 15) {

+            return _Letter_Row02_Col15;

           }

         } else if (CHAR_ROW == 2) {

           if (CHAR_COL == 0) {

@@ -387,6 +423,10 @@
             return _Letter_Row03_Col12;

           } else if (CHAR_COL == 13) {

             return _Letter_Row03_Col13;

+          } else if (CHAR_COL == 14) {

+            return _Letter_Row03_Col14;

+          } else if (CHAR_COL == 15) {

+            return _Letter_Row03_Col15;

           }

         } else if (CHAR_ROW == 1) {

           if (CHAR_COL == 0) {

@@ -417,6 +457,10 @@
             return _Letter_Row04_Col12;

           } else if (CHAR_COL == 13) {

             return _Letter_Row04_Col13;

+          } else if (CHAR_COL == 14) {

+            return _Letter_Row04_Col14;

+          } else if (CHAR_COL == 15) {

+            return _Letter_Row04_Col15;

           }

         } else if (CHAR_ROW == 0) {

           if (CHAR_COL == 0) {

@@ -447,6 +491,10 @@
             return _Letter_Row05_Col12;

           } else if (CHAR_COL == 13) {

             return _Letter_Row05_Col13;

+          } else if (CHAR_COL == 14) {

+            return _Letter_Row05_Col14;

+          } else if (CHAR_COL == 15) {

+            return _Letter_Row05_Col15;

           }

         }

 

@@ -458,7 +506,7 @@
         float letter = GetLetterParameter(i);

         float2 uv = GetLetter(i, letter);

         fixed4 ret = tex2D(_MainTex, uv);

-        if (uv.x == 0 && uv.y == 0) {

+        if (uv.x == 0 || uv.y == 0 || uv.x == 1 || uv.y == 1) {

           ret.xyz = 0;

           ret.w = 0;

         }