From 1e44d6ddc27eaab9ef17a9687f7cc0140c34611f Mon Sep 17 00:00:00 2001
From: katajisto <t@ktj.st>
Date: Sat, 20 Sep 2025 23:50:51 +0300
Subject: [PATCH] weird grass shader test

---
 src/shaders/jai/shader_plane.jai | 197 ++++++++++++-------------------
 src/shaders/shader_plane.glsl    |  21 +++-
 2 files changed, 91 insertions(+), 127 deletions(-)

diff --git a/src/shaders/jai/shader_plane.jai b/src/shaders/jai/shader_plane.jai
index d449d13..4259429 100644
--- a/src/shaders/jai/shader_plane.jai
+++ b/src/shaders/jai/shader_plane.jai
@@ -141,14 +141,9 @@ vs_plane_source_glsl430 := u8.[
         }
         else
         {
-            vec2 _63 = vec2(float(int(pos.x * 50000.0)), float(int(pos.z * 50000.0)));
-            vec2 param = _63;
-            if (random(param) < (float(idx) * 0.100000001490116119384765625))
-            {
-                discard;
-            }
-            vec2 param_1 = _63;
-            frag_color = vec4(0.0, random(param_1) + 0.100000001490116119384765625, 0.0, 1.0);
+            vec2 _54 = pos.xy * 10.0;
+            vec2 param = _54;
+            frag_color = vec4(vec3(length(vec2((fract(_54.x) * 2.0) - 1.0, (fract(_54.y) * 2.0) - 1.0))) * 0.100000001490116119384765625, 1.0);
         }
     }
 
@@ -199,28 +194,19 @@ fs_plane_source_glsl430 := u8.[
     0x63,0x34,0x28,0x30,0x2e,0x30,0x2c,0x20,0x30,0x2e,0x30,0x2c,0x20,0x31,0x2e,0x30,
     0x2c,0x20,0x31,0x2e,0x30,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x7d,0x0a,0x20,0x20,
     0x20,0x20,0x65,0x6c,0x73,0x65,0x0a,0x20,0x20,0x20,0x20,0x7b,0x0a,0x20,0x20,0x20,
-    0x20,0x20,0x20,0x20,0x20,0x76,0x65,0x63,0x32,0x20,0x5f,0x36,0x33,0x20,0x3d,0x20,
-    0x76,0x65,0x63,0x32,0x28,0x66,0x6c,0x6f,0x61,0x74,0x28,0x69,0x6e,0x74,0x28,0x70,
-    0x6f,0x73,0x2e,0x78,0x20,0x2a,0x20,0x35,0x30,0x30,0x30,0x30,0x2e,0x30,0x29,0x29,
-    0x2c,0x20,0x66,0x6c,0x6f,0x61,0x74,0x28,0x69,0x6e,0x74,0x28,0x70,0x6f,0x73,0x2e,
-    0x7a,0x20,0x2a,0x20,0x35,0x30,0x30,0x30,0x30,0x2e,0x30,0x29,0x29,0x29,0x3b,0x0a,
-    0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x76,0x65,0x63,0x32,0x20,0x70,0x61,0x72,
-    0x61,0x6d,0x20,0x3d,0x20,0x5f,0x36,0x33,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,
-    0x20,0x20,0x69,0x66,0x20,0x28,0x72,0x61,0x6e,0x64,0x6f,0x6d,0x28,0x70,0x61,0x72,
-    0x61,0x6d,0x29,0x20,0x3c,0x20,0x28,0x66,0x6c,0x6f,0x61,0x74,0x28,0x69,0x64,0x78,
-    0x29,0x20,0x2a,0x20,0x30,0x2e,0x31,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x31,0x34,
-    0x39,0x30,0x31,0x31,0x36,0x31,0x31,0x39,0x33,0x38,0x34,0x37,0x36,0x35,0x36,0x32,
-    0x35,0x29,0x29,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x7b,0x0a,0x20,0x20,
-    0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x64,0x69,0x73,0x63,0x61,0x72,
-    0x64,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x7d,0x0a,0x20,0x20,0x20,
-    0x20,0x20,0x20,0x20,0x20,0x76,0x65,0x63,0x32,0x20,0x70,0x61,0x72,0x61,0x6d,0x5f,
-    0x31,0x20,0x3d,0x20,0x5f,0x36,0x33,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
+    0x20,0x20,0x20,0x20,0x20,0x76,0x65,0x63,0x32,0x20,0x5f,0x35,0x34,0x20,0x3d,0x20,
+    0x70,0x6f,0x73,0x2e,0x78,0x79,0x20,0x2a,0x20,0x31,0x30,0x2e,0x30,0x3b,0x0a,0x20,
+    0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x76,0x65,0x63,0x32,0x20,0x70,0x61,0x72,0x61,
+    0x6d,0x20,0x3d,0x20,0x5f,0x35,0x34,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
     0x20,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,0x6f,0x72,0x20,0x3d,0x20,0x76,0x65,
-    0x63,0x34,0x28,0x30,0x2e,0x30,0x2c,0x20,0x72,0x61,0x6e,0x64,0x6f,0x6d,0x28,0x70,
-    0x61,0x72,0x61,0x6d,0x5f,0x31,0x29,0x20,0x2b,0x20,0x30,0x2e,0x31,0x30,0x30,0x30,
-    0x30,0x30,0x30,0x30,0x31,0x34,0x39,0x30,0x31,0x31,0x36,0x31,0x31,0x39,0x33,0x38,
-    0x34,0x37,0x36,0x35,0x36,0x32,0x35,0x2c,0x20,0x30,0x2e,0x30,0x2c,0x20,0x31,0x2e,
-    0x30,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x7d,0x0a,0x7d,0x0a,0x0a,0x00,
+    0x63,0x34,0x28,0x76,0x65,0x63,0x33,0x28,0x6c,0x65,0x6e,0x67,0x74,0x68,0x28,0x76,
+    0x65,0x63,0x32,0x28,0x28,0x66,0x72,0x61,0x63,0x74,0x28,0x5f,0x35,0x34,0x2e,0x78,
+    0x29,0x20,0x2a,0x20,0x32,0x2e,0x30,0x29,0x20,0x2d,0x20,0x31,0x2e,0x30,0x2c,0x20,
+    0x28,0x66,0x72,0x61,0x63,0x74,0x28,0x5f,0x35,0x34,0x2e,0x79,0x29,0x20,0x2a,0x20,
+    0x32,0x2e,0x30,0x29,0x20,0x2d,0x20,0x31,0x2e,0x30,0x29,0x29,0x29,0x20,0x2a,0x20,
+    0x30,0x2e,0x31,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x31,0x34,0x39,0x30,0x31,0x31,
+    0x36,0x31,0x31,0x39,0x33,0x38,0x34,0x37,0x36,0x35,0x36,0x32,0x35,0x2c,0x20,0x31,
+    0x2e,0x30,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x7d,0x0a,0x7d,0x0a,0x0a,0x00,
 ];
 /*
     #version 300 es
@@ -312,14 +298,9 @@ vs_plane_source_glsl300es := u8.[
         }
         else
         {
-            highp vec2 _63 = vec2(float(int(pos.x * 50000.0)), float(int(pos.z * 50000.0)));
-            highp vec2 param = _63;
-            if (random(param) < (float(idx) * 0.100000001490116119384765625))
-            {
-                discard;
-            }
-            highp vec2 param_1 = _63;
-            frag_color = vec4(0.0, random(param_1) + 0.100000001490116119384765625, 0.0, 1.0);
+            highp vec2 _54 = pos.xy * 10.0;
+            highp vec2 param = _54;
+            frag_color = vec4(vec3(length(vec2((fract(_54.x) * 2.0) - 1.0, (fract(_54.y) * 2.0) - 1.0))) * 0.100000001490116119384765625, 1.0);
         }
     }
 
@@ -377,29 +358,19 @@ fs_plane_source_glsl300es := u8.[
     0x30,0x2c,0x20,0x31,0x2e,0x30,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x7d,0x0a,0x20,
     0x20,0x20,0x20,0x65,0x6c,0x73,0x65,0x0a,0x20,0x20,0x20,0x20,0x7b,0x0a,0x20,0x20,
     0x20,0x20,0x20,0x20,0x20,0x20,0x68,0x69,0x67,0x68,0x70,0x20,0x76,0x65,0x63,0x32,
-    0x20,0x5f,0x36,0x33,0x20,0x3d,0x20,0x76,0x65,0x63,0x32,0x28,0x66,0x6c,0x6f,0x61,
-    0x74,0x28,0x69,0x6e,0x74,0x28,0x70,0x6f,0x73,0x2e,0x78,0x20,0x2a,0x20,0x35,0x30,
-    0x30,0x30,0x30,0x2e,0x30,0x29,0x29,0x2c,0x20,0x66,0x6c,0x6f,0x61,0x74,0x28,0x69,
-    0x6e,0x74,0x28,0x70,0x6f,0x73,0x2e,0x7a,0x20,0x2a,0x20,0x35,0x30,0x30,0x30,0x30,
-    0x2e,0x30,0x29,0x29,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x68,
-    0x69,0x67,0x68,0x70,0x20,0x76,0x65,0x63,0x32,0x20,0x70,0x61,0x72,0x61,0x6d,0x20,
-    0x3d,0x20,0x5f,0x36,0x33,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x69,
-    0x66,0x20,0x28,0x72,0x61,0x6e,0x64,0x6f,0x6d,0x28,0x70,0x61,0x72,0x61,0x6d,0x29,
-    0x20,0x3c,0x20,0x28,0x66,0x6c,0x6f,0x61,0x74,0x28,0x69,0x64,0x78,0x29,0x20,0x2a,
-    0x20,0x30,0x2e,0x31,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x31,0x34,0x39,0x30,0x31,
-    0x31,0x36,0x31,0x31,0x39,0x33,0x38,0x34,0x37,0x36,0x35,0x36,0x32,0x35,0x29,0x29,
-    0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x7b,0x0a,0x20,0x20,0x20,0x20,0x20,
-    0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x64,0x69,0x73,0x63,0x61,0x72,0x64,0x3b,0x0a,
-    0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x7d,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,
-    0x20,0x20,0x68,0x69,0x67,0x68,0x70,0x20,0x76,0x65,0x63,0x32,0x20,0x70,0x61,0x72,
-    0x61,0x6d,0x5f,0x31,0x20,0x3d,0x20,0x5f,0x36,0x33,0x3b,0x0a,0x20,0x20,0x20,0x20,
-    0x20,0x20,0x20,0x20,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,0x6f,0x72,0x20,0x3d,
-    0x20,0x76,0x65,0x63,0x34,0x28,0x30,0x2e,0x30,0x2c,0x20,0x72,0x61,0x6e,0x64,0x6f,
-    0x6d,0x28,0x70,0x61,0x72,0x61,0x6d,0x5f,0x31,0x29,0x20,0x2b,0x20,0x30,0x2e,0x31,
+    0x20,0x5f,0x35,0x34,0x20,0x3d,0x20,0x70,0x6f,0x73,0x2e,0x78,0x79,0x20,0x2a,0x20,
+    0x31,0x30,0x2e,0x30,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x68,0x69,
+    0x67,0x68,0x70,0x20,0x76,0x65,0x63,0x32,0x20,0x70,0x61,0x72,0x61,0x6d,0x20,0x3d,
+    0x20,0x5f,0x35,0x34,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x66,0x72,
+    0x61,0x67,0x5f,0x63,0x6f,0x6c,0x6f,0x72,0x20,0x3d,0x20,0x76,0x65,0x63,0x34,0x28,
+    0x76,0x65,0x63,0x33,0x28,0x6c,0x65,0x6e,0x67,0x74,0x68,0x28,0x76,0x65,0x63,0x32,
+    0x28,0x28,0x66,0x72,0x61,0x63,0x74,0x28,0x5f,0x35,0x34,0x2e,0x78,0x29,0x20,0x2a,
+    0x20,0x32,0x2e,0x30,0x29,0x20,0x2d,0x20,0x31,0x2e,0x30,0x2c,0x20,0x28,0x66,0x72,
+    0x61,0x63,0x74,0x28,0x5f,0x35,0x34,0x2e,0x79,0x29,0x20,0x2a,0x20,0x32,0x2e,0x30,
+    0x29,0x20,0x2d,0x20,0x31,0x2e,0x30,0x29,0x29,0x29,0x20,0x2a,0x20,0x30,0x2e,0x31,
     0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x31,0x34,0x39,0x30,0x31,0x31,0x36,0x31,0x31,
-    0x39,0x33,0x38,0x34,0x37,0x36,0x35,0x36,0x32,0x35,0x2c,0x20,0x30,0x2e,0x30,0x2c,
-    0x20,0x31,0x2e,0x30,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x7d,0x0a,0x7d,0x0a,0x0a,
-    0x00,
+    0x39,0x33,0x38,0x34,0x37,0x36,0x35,0x36,0x32,0x35,0x2c,0x20,0x31,0x2e,0x30,0x29,
+    0x3b,0x0a,0x20,0x20,0x20,0x20,0x7d,0x0a,0x7d,0x0a,0x0a,0x00,
 ];
 /*
     #include <metal_stdlib>
@@ -519,7 +490,6 @@ vs_plane_source_metal_macos := u8.[
     struct main0_in
     {
         float4 pos [[user(locn0)]];
-        int idx [[user(locn1)]];
     };
 
     static inline __attribute__((always_inline))
@@ -537,14 +507,9 @@ vs_plane_source_metal_macos := u8.[
         }
         else
         {
-            float2 _63 = float2(float(int(in.pos.x * 50000.0)), float(int(in.pos.z * 50000.0)));
-            float2 param = _63;
-            if (random(param) < (float(in.idx) * 0.100000001490116119384765625))
-            {
-                discard_fragment();
-            }
-            float2 param_1 = _63;
-            out.frag_color = float4(0.0, random(param_1) + 0.100000001490116119384765625, 0.0, 1.0);
+            float2 _54 = in.pos.xy * 10.0;
+            float2 param = _54;
+            out.frag_color = float4(float3(length(float2((fract(_54.x) * 2.0) - 1.0, (fract(_54.y) * 2.0) - 1.0))) * 0.100000001490116119384765625, 1.0);
         }
         return out;
     }
@@ -586,61 +551,49 @@ fs_plane_source_metal_macos := u8.[
     0x28,0x30,0x29,0x5d,0x5d,0x3b,0x0a,0x7d,0x3b,0x0a,0x0a,0x73,0x74,0x72,0x75,0x63,
     0x74,0x20,0x6d,0x61,0x69,0x6e,0x30,0x5f,0x69,0x6e,0x0a,0x7b,0x0a,0x20,0x20,0x20,
     0x20,0x66,0x6c,0x6f,0x61,0x74,0x34,0x20,0x70,0x6f,0x73,0x20,0x5b,0x5b,0x75,0x73,
-    0x65,0x72,0x28,0x6c,0x6f,0x63,0x6e,0x30,0x29,0x5d,0x5d,0x3b,0x0a,0x20,0x20,0x20,
-    0x20,0x69,0x6e,0x74,0x20,0x69,0x64,0x78,0x20,0x5b,0x5b,0x75,0x73,0x65,0x72,0x28,
-    0x6c,0x6f,0x63,0x6e,0x31,0x29,0x5d,0x5d,0x3b,0x0a,0x7d,0x3b,0x0a,0x0a,0x73,0x74,
-    0x61,0x74,0x69,0x63,0x20,0x69,0x6e,0x6c,0x69,0x6e,0x65,0x20,0x5f,0x5f,0x61,0x74,
-    0x74,0x72,0x69,0x62,0x75,0x74,0x65,0x5f,0x5f,0x28,0x28,0x61,0x6c,0x77,0x61,0x79,
-    0x73,0x5f,0x69,0x6e,0x6c,0x69,0x6e,0x65,0x29,0x29,0x0a,0x66,0x6c,0x6f,0x61,0x74,
-    0x20,0x72,0x61,0x6e,0x64,0x6f,0x6d,0x28,0x74,0x68,0x72,0x65,0x61,0x64,0x20,0x63,
-    0x6f,0x6e,0x73,0x74,0x20,0x66,0x6c,0x6f,0x61,0x74,0x32,0x26,0x20,0x73,0x74,0x29,
-    0x0a,0x7b,0x0a,0x20,0x20,0x20,0x20,0x72,0x65,0x74,0x75,0x72,0x6e,0x20,0x66,0x72,
-    0x61,0x63,0x74,0x28,0x73,0x69,0x6e,0x28,0x64,0x6f,0x74,0x28,0x73,0x74,0x2c,0x20,
-    0x66,0x6c,0x6f,0x61,0x74,0x32,0x28,0x31,0x32,0x2e,0x39,0x38,0x39,0x38,0x30,0x30,
-    0x34,0x35,0x33,0x31,0x38,0x36,0x30,0x33,0x35,0x31,0x35,0x36,0x32,0x35,0x2c,0x20,
-    0x37,0x36,0x37,0x2e,0x32,0x33,0x32,0x39,0x37,0x31,0x31,0x39,0x31,0x34,0x30,0x36,
-    0x32,0x35,0x29,0x29,0x29,0x20,0x2a,0x20,0x34,0x33,0x37,0x35,0x38,0x2e,0x35,0x34,
-    0x36,0x38,0x37,0x35,0x29,0x3b,0x0a,0x7d,0x0a,0x0a,0x66,0x72,0x61,0x67,0x6d,0x65,
-    0x6e,0x74,0x20,0x6d,0x61,0x69,0x6e,0x30,0x5f,0x6f,0x75,0x74,0x20,0x6d,0x61,0x69,
-    0x6e,0x30,0x28,0x6d,0x61,0x69,0x6e,0x30,0x5f,0x69,0x6e,0x20,0x69,0x6e,0x20,0x5b,
-    0x5b,0x73,0x74,0x61,0x67,0x65,0x5f,0x69,0x6e,0x5d,0x5d,0x2c,0x20,0x63,0x6f,0x6e,
-    0x73,0x74,0x61,0x6e,0x74,0x20,0x70,0x6c,0x61,0x6e,0x65,0x5f,0x77,0x6f,0x72,0x6c,
-    0x64,0x5f,0x63,0x6f,0x6e,0x66,0x69,0x67,0x26,0x20,0x5f,0x32,0x38,0x20,0x5b,0x5b,
-    0x62,0x75,0x66,0x66,0x65,0x72,0x28,0x30,0x29,0x5d,0x5d,0x29,0x0a,0x7b,0x0a,0x20,
-    0x20,0x20,0x20,0x6d,0x61,0x69,0x6e,0x30,0x5f,0x6f,0x75,0x74,0x20,0x6f,0x75,0x74,
-    0x20,0x3d,0x20,0x7b,0x7d,0x3b,0x0a,0x20,0x20,0x20,0x20,0x69,0x66,0x20,0x28,0x5f,
-    0x32,0x38,0x2e,0x70,0x6c,0x61,0x6e,0x65,0x54,0x79,0x70,0x65,0x20,0x3d,0x3d,0x20,
-    0x31,0x29,0x0a,0x20,0x20,0x20,0x20,0x7b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
-    0x20,0x6f,0x75,0x74,0x2e,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,0x6f,0x72,0x20,
-    0x3d,0x20,0x66,0x6c,0x6f,0x61,0x74,0x34,0x28,0x30,0x2e,0x30,0x2c,0x20,0x30,0x2e,
-    0x30,0x2c,0x20,0x31,0x2e,0x30,0x2c,0x20,0x31,0x2e,0x30,0x29,0x3b,0x0a,0x20,0x20,
-    0x20,0x20,0x7d,0x0a,0x20,0x20,0x20,0x20,0x65,0x6c,0x73,0x65,0x0a,0x20,0x20,0x20,
-    0x20,0x7b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x66,0x6c,0x6f,0x61,0x74,
-    0x32,0x20,0x5f,0x36,0x33,0x20,0x3d,0x20,0x66,0x6c,0x6f,0x61,0x74,0x32,0x28,0x66,
-    0x6c,0x6f,0x61,0x74,0x28,0x69,0x6e,0x74,0x28,0x69,0x6e,0x2e,0x70,0x6f,0x73,0x2e,
-    0x78,0x20,0x2a,0x20,0x35,0x30,0x30,0x30,0x30,0x2e,0x30,0x29,0x29,0x2c,0x20,0x66,
-    0x6c,0x6f,0x61,0x74,0x28,0x69,0x6e,0x74,0x28,0x69,0x6e,0x2e,0x70,0x6f,0x73,0x2e,
-    0x7a,0x20,0x2a,0x20,0x35,0x30,0x30,0x30,0x30,0x2e,0x30,0x29,0x29,0x29,0x3b,0x0a,
-    0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x66,0x6c,0x6f,0x61,0x74,0x32,0x20,0x70,
-    0x61,0x72,0x61,0x6d,0x20,0x3d,0x20,0x5f,0x36,0x33,0x3b,0x0a,0x20,0x20,0x20,0x20,
-    0x20,0x20,0x20,0x20,0x69,0x66,0x20,0x28,0x72,0x61,0x6e,0x64,0x6f,0x6d,0x28,0x70,
-    0x61,0x72,0x61,0x6d,0x29,0x20,0x3c,0x20,0x28,0x66,0x6c,0x6f,0x61,0x74,0x28,0x69,
-    0x6e,0x2e,0x69,0x64,0x78,0x29,0x20,0x2a,0x20,0x30,0x2e,0x31,0x30,0x30,0x30,0x30,
-    0x30,0x30,0x30,0x31,0x34,0x39,0x30,0x31,0x31,0x36,0x31,0x31,0x39,0x33,0x38,0x34,
-    0x37,0x36,0x35,0x36,0x32,0x35,0x29,0x29,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
-    0x20,0x7b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x64,
-    0x69,0x73,0x63,0x61,0x72,0x64,0x5f,0x66,0x72,0x61,0x67,0x6d,0x65,0x6e,0x74,0x28,
-    0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x7d,0x0a,0x20,0x20,0x20,
+    0x65,0x72,0x28,0x6c,0x6f,0x63,0x6e,0x30,0x29,0x5d,0x5d,0x3b,0x0a,0x7d,0x3b,0x0a,
+    0x0a,0x73,0x74,0x61,0x74,0x69,0x63,0x20,0x69,0x6e,0x6c,0x69,0x6e,0x65,0x20,0x5f,
+    0x5f,0x61,0x74,0x74,0x72,0x69,0x62,0x75,0x74,0x65,0x5f,0x5f,0x28,0x28,0x61,0x6c,
+    0x77,0x61,0x79,0x73,0x5f,0x69,0x6e,0x6c,0x69,0x6e,0x65,0x29,0x29,0x0a,0x66,0x6c,
+    0x6f,0x61,0x74,0x20,0x72,0x61,0x6e,0x64,0x6f,0x6d,0x28,0x74,0x68,0x72,0x65,0x61,
+    0x64,0x20,0x63,0x6f,0x6e,0x73,0x74,0x20,0x66,0x6c,0x6f,0x61,0x74,0x32,0x26,0x20,
+    0x73,0x74,0x29,0x0a,0x7b,0x0a,0x20,0x20,0x20,0x20,0x72,0x65,0x74,0x75,0x72,0x6e,
+    0x20,0x66,0x72,0x61,0x63,0x74,0x28,0x73,0x69,0x6e,0x28,0x64,0x6f,0x74,0x28,0x73,
+    0x74,0x2c,0x20,0x66,0x6c,0x6f,0x61,0x74,0x32,0x28,0x31,0x32,0x2e,0x39,0x38,0x39,
+    0x38,0x30,0x30,0x34,0x35,0x33,0x31,0x38,0x36,0x30,0x33,0x35,0x31,0x35,0x36,0x32,
+    0x35,0x2c,0x20,0x37,0x36,0x37,0x2e,0x32,0x33,0x32,0x39,0x37,0x31,0x31,0x39,0x31,
+    0x34,0x30,0x36,0x32,0x35,0x29,0x29,0x29,0x20,0x2a,0x20,0x34,0x33,0x37,0x35,0x38,
+    0x2e,0x35,0x34,0x36,0x38,0x37,0x35,0x29,0x3b,0x0a,0x7d,0x0a,0x0a,0x66,0x72,0x61,
+    0x67,0x6d,0x65,0x6e,0x74,0x20,0x6d,0x61,0x69,0x6e,0x30,0x5f,0x6f,0x75,0x74,0x20,
+    0x6d,0x61,0x69,0x6e,0x30,0x28,0x6d,0x61,0x69,0x6e,0x30,0x5f,0x69,0x6e,0x20,0x69,
+    0x6e,0x20,0x5b,0x5b,0x73,0x74,0x61,0x67,0x65,0x5f,0x69,0x6e,0x5d,0x5d,0x2c,0x20,
+    0x63,0x6f,0x6e,0x73,0x74,0x61,0x6e,0x74,0x20,0x70,0x6c,0x61,0x6e,0x65,0x5f,0x77,
+    0x6f,0x72,0x6c,0x64,0x5f,0x63,0x6f,0x6e,0x66,0x69,0x67,0x26,0x20,0x5f,0x32,0x38,
+    0x20,0x5b,0x5b,0x62,0x75,0x66,0x66,0x65,0x72,0x28,0x30,0x29,0x5d,0x5d,0x29,0x0a,
+    0x7b,0x0a,0x20,0x20,0x20,0x20,0x6d,0x61,0x69,0x6e,0x30,0x5f,0x6f,0x75,0x74,0x20,
+    0x6f,0x75,0x74,0x20,0x3d,0x20,0x7b,0x7d,0x3b,0x0a,0x20,0x20,0x20,0x20,0x69,0x66,
+    0x20,0x28,0x5f,0x32,0x38,0x2e,0x70,0x6c,0x61,0x6e,0x65,0x54,0x79,0x70,0x65,0x20,
+    0x3d,0x3d,0x20,0x31,0x29,0x0a,0x20,0x20,0x20,0x20,0x7b,0x0a,0x20,0x20,0x20,0x20,
+    0x20,0x20,0x20,0x20,0x6f,0x75,0x74,0x2e,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,
+    0x6f,0x72,0x20,0x3d,0x20,0x66,0x6c,0x6f,0x61,0x74,0x34,0x28,0x30,0x2e,0x30,0x2c,
+    0x20,0x30,0x2e,0x30,0x2c,0x20,0x31,0x2e,0x30,0x2c,0x20,0x31,0x2e,0x30,0x29,0x3b,
+    0x0a,0x20,0x20,0x20,0x20,0x7d,0x0a,0x20,0x20,0x20,0x20,0x65,0x6c,0x73,0x65,0x0a,
+    0x20,0x20,0x20,0x20,0x7b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x66,0x6c,
+    0x6f,0x61,0x74,0x32,0x20,0x5f,0x35,0x34,0x20,0x3d,0x20,0x69,0x6e,0x2e,0x70,0x6f,
+    0x73,0x2e,0x78,0x79,0x20,0x2a,0x20,0x31,0x30,0x2e,0x30,0x3b,0x0a,0x20,0x20,0x20,
     0x20,0x20,0x20,0x20,0x20,0x66,0x6c,0x6f,0x61,0x74,0x32,0x20,0x70,0x61,0x72,0x61,
-    0x6d,0x5f,0x31,0x20,0x3d,0x20,0x5f,0x36,0x33,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,
-    0x20,0x20,0x20,0x6f,0x75,0x74,0x2e,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,0x6f,
-    0x72,0x20,0x3d,0x20,0x66,0x6c,0x6f,0x61,0x74,0x34,0x28,0x30,0x2e,0x30,0x2c,0x20,
-    0x72,0x61,0x6e,0x64,0x6f,0x6d,0x28,0x70,0x61,0x72,0x61,0x6d,0x5f,0x31,0x29,0x20,
-    0x2b,0x20,0x30,0x2e,0x31,0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x31,0x34,0x39,0x30,
-    0x31,0x31,0x36,0x31,0x31,0x39,0x33,0x38,0x34,0x37,0x36,0x35,0x36,0x32,0x35,0x2c,
-    0x20,0x30,0x2e,0x30,0x2c,0x20,0x31,0x2e,0x30,0x29,0x3b,0x0a,0x20,0x20,0x20,0x20,
-    0x7d,0x0a,0x20,0x20,0x20,0x20,0x72,0x65,0x74,0x75,0x72,0x6e,0x20,0x6f,0x75,0x74,
-    0x3b,0x0a,0x7d,0x0a,0x0a,0x00,
+    0x6d,0x20,0x3d,0x20,0x5f,0x35,0x34,0x3b,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
+    0x20,0x6f,0x75,0x74,0x2e,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,0x6f,0x72,0x20,
+    0x3d,0x20,0x66,0x6c,0x6f,0x61,0x74,0x34,0x28,0x66,0x6c,0x6f,0x61,0x74,0x33,0x28,
+    0x6c,0x65,0x6e,0x67,0x74,0x68,0x28,0x66,0x6c,0x6f,0x61,0x74,0x32,0x28,0x28,0x66,
+    0x72,0x61,0x63,0x74,0x28,0x5f,0x35,0x34,0x2e,0x78,0x29,0x20,0x2a,0x20,0x32,0x2e,
+    0x30,0x29,0x20,0x2d,0x20,0x31,0x2e,0x30,0x2c,0x20,0x28,0x66,0x72,0x61,0x63,0x74,
+    0x28,0x5f,0x35,0x34,0x2e,0x79,0x29,0x20,0x2a,0x20,0x32,0x2e,0x30,0x29,0x20,0x2d,
+    0x20,0x31,0x2e,0x30,0x29,0x29,0x29,0x20,0x2a,0x20,0x30,0x2e,0x31,0x30,0x30,0x30,
+    0x30,0x30,0x30,0x30,0x31,0x34,0x39,0x30,0x31,0x31,0x36,0x31,0x31,0x39,0x33,0x38,
+    0x34,0x37,0x36,0x35,0x36,0x32,0x35,0x2c,0x20,0x31,0x2e,0x30,0x29,0x3b,0x0a,0x20,
+    0x20,0x20,0x20,0x7d,0x0a,0x20,0x20,0x20,0x20,0x72,0x65,0x74,0x75,0x72,0x6e,0x20,
+    0x6f,0x75,0x74,0x3b,0x0a,0x7d,0x0a,0x0a,0x00,
 ];
 plane_shader_desc :: (backend: sg_backend) -> sg_shader_desc {
     desc: sg_shader_desc;
diff --git a/src/shaders/shader_plane.glsl b/src/shaders/shader_plane.glsl
index 8f5d685..4c6d606 100644
--- a/src/shaders/shader_plane.glsl
+++ b/src/shaders/shader_plane.glsl
@@ -49,15 +49,26 @@ layout(binding=1) uniform plane_world_config {
 };
 
 void main() {
+    
     if(planeType == 1) {
         frag_color = vec4(0.0, 0.0, 1.0, 1.0);
     } else {
-        vec2 approxPos = vec2(int(pos.x * 50000.0), int(pos.z * 50000.0));
-        float height = random(approxPos);
-        if(height < float(idx) * 0.1) {
-            discard;
+        float density = 10.0;
+    
+        vec2 uv = pos.xy * density;
+        vec2 localUV = vec2(fract(uv.x) * 2.0 - 1.0, fract(uv.y) * 2.0 - 1.0);
+
+        float localDistanceFromCenter = length(localUV);
+
+        float rand = random(uv);
+        
+
+        bool outsideThickness = localDistanceFromCenter > (0.1 * (rand - pos.y));
+
+        if(outsideThickness) {
+            // discard;
         }
-        frag_color = vec4(0.0, random(approxPos) + 0.1, 0.0, 1.0);
+        frag_color = vec4(vec3(localDistanceFromCenter) * 0.1, 1.0);
     }
 }
 @end