Update mudlord-emeraldenvy4.slang

procedural/mudlord-emeraldenvy4.slang

@@ -1,11 +1,11 @@
 #version 450
 layout(std140, set = 0, binding = 0) uniform UBO
 {
-	mat4 MVP;
+    mat4 MVP;
-	vec4 OutputSize;
+    vec4 OutputSize;
-	vec4 OriginalSize;
+    vec4 OriginalSize;
-	vec4 SourceSize;
+    vec4 SourceSize;
-	uint FrameCount;
+    uint FrameCount;
 } global;
 
 #pragma stage vertex
@@ -16,8 +16,8 @@ const vec2 madd = vec2(0.5, 0.5);
 
 void main()
 {
-	gl_Position = global.MVP * Position;
+    gl_Position = global.MVP * Position;
-	vTexCoord   = gl_Position.xy;
+    vTexCoord   = gl_Position.xy;
 }
 
 #pragma stage fragment
@@ -37,76 +37,76 @@ float ground_z  = speed*0.125;
 
 vec2 rotate(vec2 k,float t)
 {
-	return vec2(cos(t)*k.x-sin(t)*k.y, sin(t)*k.x+cos(t)*k.y);
+    return vec2(cos(t)*k.x-sin(t)*k.y, sin(t)*k.x+cos(t)*k.y);
 }
 
 float scene(vec3 p)
 {
-	float ball_p = 0.25;
+    float ball_p = 0.25;
-	float ball_w = ball_p*1.0;
+    float ball_w = ball_p*1.0;
-	float ball   = length(mod(p.xyz,ball_p)-ball_p*0.5)-ball_w;
+    float ball   = length(mod(p.xyz,ball_p)-ball_p*0.5)-ball_w;
-	float hole_w = ball_p*0.55;
+    float hole_w = ball_p*0.55;
-	float hole   = length(mod(p.xyz,ball_p)-ball_p*0.5)-hole_w;
+    float hole   = length(mod(p.xyz,ball_p)-ball_p*0.5)-hole_w;
-	float pipe_p = 0.015;
+    float pipe_p = 0.015;
-	float pipe_w = pipe_p*0.42;//-0.00375*sync;
+    float pipe_w = pipe_p*0.42;//-0.00375*sync;
-	float pipe_y = length(max(abs(mod(p.xy,pipe_p)-pipe_p*0.5)-pipe_w,0.0));
+    float pipe_y = length(max(abs(mod(p.xy,pipe_p)-pipe_p*0.5)-pipe_w,0.0));
-	float pipe_z = length(max(abs(mod(p.xz,pipe_p)-pipe_p*0.5)-pipe_w,0.0));
+    float pipe_z = length(max(abs(mod(p.xz,pipe_p)-pipe_p*0.5)-pipe_w,0.0));
 
-	return max(max(ball,-hole),max(pipe_y,max(pipe_y,pipe_z)));
+    return max(max(ball,-hole),max(pipe_y,max(pipe_y,pipe_z)));
 }
 
 vec3 getNormal(vec3 pos) 
 { 
-	vec3 e = vec3(0.0, 0.0001, 0.0); 
+    vec3 e = vec3(0.0, 0.0001, 0.0); 
 
-	return normalize(vec3(scene(pos+e.yxx) - scene(pos-e.yxx),
+    return normalize(vec3(scene(pos+e.yxx) - scene(pos-e.yxx),
-	                      scene(pos+e.xyx) - scene(pos-e.xyx),
+                          scene(pos+e.xyx) - scene(pos-e.xyx),
                           scene(pos+e.xxy) - scene(pos-e.xxy))); 
 }
 
 float render_scene(vec3 ray_origin, vec3 ray_dir,float t)
 {
-	const int ray_n=96;
+    const int ray_n=96;
-	for(int i = 0; i<ray_n; i++)
+    for(int i = 0; i<ray_n; i++)
-	{
+    {
-		float k = scene(ray_origin+ray_dir*t);
+        float k = scene(ray_origin+ray_dir*t);
-		t += k*fade;
+        t += k*fade;
-	}
+    }
-	return t;	
+    return t;   
 }
 
 void main(void)
 {
-	vec2 FragCoord = vTexCoord.xy*global.OutputSize.xy;
+    vec2 FragCoord = vTexCoord.xy*global.OutputSize.xy;
-	FragCoord.y    = -FragCoord.y;
+    FragCoord.y    = -FragCoord.y;
 
-	vec2 position = (FragCoord.xy/resolution.xy);
+    vec2 position = (FragCoord.xy/resolution.xy);
-	vec2 p        = -1.0+2.0*position;
+    vec2 p        = -1.0+2.0*position;
-	
+    
-	//set up camera
+    //set up camera
-	float speed = time*0.5;
+    float speed = time*0.5;
-	vec3 dir = normalize(vec3(p*vec2(1.0,1.0),1.));
+    vec3 dir = normalize(vec3(p*vec2(1.0,1.0),1.));
-	dir.yz = rotate(dir.yz,PI*1.0*sin(speed*0.25));		// rotation x
+    dir.yz = rotate(dir.yz,PI*1.0*sin(speed*0.25));     // rotation x
-	dir.zx = rotate(dir.zx,PI*1.0*cos(speed*0.25));		// rotation y
+    dir.zx = rotate(dir.zx,PI*1.0*cos(speed*0.25));     // rotation y
-	dir.xy = rotate(dir.xy,-speed*0.5);					// rotation z
+    dir.xy = rotate(dir.xy,-speed*0.5);                 // rotation z
-	vec3 ray = vec3(ground_x,ground_y,ground_z);
+    vec3 ray = vec3(ground_x,ground_y,ground_z);
-	
+    
-	//the raymarch
+    //the raymarch
-	float t  = 0.0;
+    float t  = 0.0;
-	t        = render_scene(ray,dir,t);
+    t        = render_scene(ray,dir,t);
-	vec3 hit = ray + dir*t;
+    vec3 hit = ray + dir*t;
-	t       += hit.x;
+    t       += hit.x;
-	
+    
-	//get normal for reflection
+    //get normal for reflection
-	vec3 n = getNormal(hit);
+    vec3 n = getNormal(hit);
-	
+    
-	//render reflection
+    //render reflection
-	dir        = reflect(dir, n);
+    dir        = reflect(dir, n);
-	dir        = normalize(refract(dir, n, .82)); 	
+    dir        = normalize(refract(dir, n, .82));   
-	t          = render_scene(ray, dir, t);	
+    t          = render_scene(ray, dir, t); 
-	float c    = (n.x*1.0 + n.y+n.z)*0.5;	
+    float c    = (n.x*1.0 + n.y+n.z)*0.5;   
-	vec3 color = vec3(0., c*t*0.125*p.x + t*0.1, c*t*0.);
+    vec3 color = vec3(0., c*t*0.125*p.x + t*0.1, c*t*0.);
-	color     *= 2.412;
+    color     *= 2.412;
-	
+    
-	FragColor = vec4(color, 1.0);
+    FragColor = vec4(color, 1.0);
 }