removing branching on tiling shader, improving performance

Now tga export needs extra care, but boy that 5 FPS improvement

assets/mods/basegame/blocks/Terrain - Air tile must have black transparent tile, NOT white.txt

@@ -0,0 +1 @@
+Air tile (tile 0,0) must have colour of 0x00000000, NOT 0xFFFFFF00. You can modify the tga file directly to correct bad exporter behaviour.

assets/tiling.frag

@@ -23,14 +23,11 @@ uniform sampler2D backgroundTexture;
 
 uniform ivec2 tilesInAtlas = ivec2(256, 256);
 uniform ivec2 atlasTexSize = ivec2(4096, 4096);
+ivec2 tileSizeInPx = atlasTexSize / tilesInAtlas;
 
 uniform vec4 colourFilter = vec4(1, 1, 1, 1);
 
 uniform ivec2 cameraTranslation = ivec2(0, 0);
-uniform int tileSizeInPx = 16;
-
-
-vec4 nocolour = vec4(0,0,0,0);
 
 
 ivec2 getTileXY(int tileNumber) {
@@ -75,8 +72,10 @@ void main() {
     // TODO blend a breakage (0xrrggbb where 0xr0 -- upper 4 bits of int_red component)
 
 
-    if (tileXY.x == 0 && tileXY.y == 0)
+    // if statements considered harmful
+    //        --definitely not Dijkstra
+    /*if (tileXY.x == 0 && tileXY.y == 0)
         gl_FragColor = nocolour;
-    else
+    else*/
         gl_FragColor = colourFilter * texture2D(tilesAtlas, finalUVCoordForTile);
 }

src/net/torvald/terrarum/modulebasegame/gameactors/AVKey.kt

@@ -108,4 +108,8 @@ object AVKey {
 
     const val HEALTH = "health"
     const val MAGIC = "magic"
+
+
+    const val __HISTORICAL_BORNTIME = "__borntime" // time_t
+    const val __HISTORICAL_DEADTIME = "__deadtime" // time_t
 }