From 12315d2791b1b483034ef43a4b0b6241daa28fbe Mon Sep 17 00:00:00 2001
From: Amy Retzerau <amy.retzerau@gmail.com>
Date: Thu, 4 Sep 2025 12:50:36 +0200
Subject: [PATCH] fix: changes inf ray behaviour for better sky rendering

---
 sdf.glsl | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/sdf.glsl b/sdf.glsl
index e73a76b..9dea62e 100644
--- a/sdf.glsl
+++ b/sdf.glsl
@@ -28,7 +28,7 @@ struct Ray {
 };
 
 Ray createRay(vec3 dir, vec3 pos){
-    return Ray(dir, pos, .0, .0, SmallHit(80.,0.,false), vec3(.0));
+    return Ray(dir, pos, .0, .0, SmallHit(80.,0.,false), vec3(1.0));
 }
 
 Ray applyMin(Ray ray, float min) {
@@ -52,11 +52,11 @@ Ray applyMin(Ray ray, float min) {
 
 
 float planeMin(vec3 pos){
-    return pos.y - planeHeight;
+    return pos.y - planeHeight+ 0.2*sin(5*pos.x+t)*sin(5*pos.y+t)*sin(5*pos.z+t);
 }
 
 float sphereMin(vec3 pos){
-    return length(pos - center) - radius + 0.2*sin(5*pos.x+t)*sin(5*pos.y+t)*sin(5*pos.z+t);
+    return length(pos - center) - radius;
 }
 
 Ray minFn(Ray ray){
@@ -88,11 +88,13 @@ Ray march(Ray ray){
     //ray.min = minFn(ray.pos);
     ray = minFn(ray);
     int c = 0;
-    while(( c < 200) && (ray.min < 100.0f) && (ray.min > 0.01f) ) {
+    while(( c < 1000) && (ray.min < 100.0f) && (ray.min > 0.01f) ) {
         ray = minFn(ray);    
         c++;
     }
-
+    if(ray.min > 0.01){
+        ray.color = vec3(1.0);
+    }
     return ray;
 }
 
@@ -142,11 +144,14 @@ void main()
 
     light *= shLeve;
 
+    Ray reflectR = createRay(reflect(ray.dir,normal),ray.pos + 0.1* normal);
+    reflectR = march(reflectR);
+
     if(ray.min <= 0.2){
-        //FragColor = vec4(vec3(shRay.small.min)*0.1,1.0);
-        FragColor = vec4(ray.color * (light+0.3), 1.0);
+        //FragColor = vec4(0,1,0,1.0);
+        FragColor = vec4(mix(ray.color,reflectR.color,0.3) * (light+0.3), 1.0);
     } else {
-        FragColor = vec4(.0,0.0,0.0,1.0);
+        FragColor = vec4(ray.color,1.0);
     }
 
 }