added godrays in light and shadow

Version 2.0/godrays.frag

@@ -0,0 +1,103 @@
+/* Adapted from https://godotshaders.com/shader/god-rays/ Author : pend00 
+ Adapted for enve/friction by axiomgraph
+ Opengl version 3.3*/
+#version 330 core
+#define PI 3.1415926535
+layout(location = 0) out vec4 fragColor;
+layout(pixel_center_integer) in vec4 gl_FragCoord;
+
+uniform sampler2D texture; 
+in vec2 texCoord;
+
+uniform float time;
+uniform float angle; 
+uniform float position; 
+uniform float spread; 
+uniform float cutoff; 
+uniform float falloff; 
+uniform float edge_fade; 
+
+uniform float speed; 
+uniform float ray1_density; 
+uniform float ray2_density; 
+uniform float ray2_intensity; 
+
+uniform vec4 color; 
+
+uniform int hdr;  // boolean value
+uniform float seed; 
+
+// Random and noise functions from Book of Shader's chapter on Noise.
+float random(vec2 _uv) {
+    return fract(sin(dot(_uv.xy,
+                         vec2(12.9898, 78.233))) *
+        43758.5453123);
+}
+
+float noise (in vec2 uv) {
+    vec2 i = floor(uv);
+    vec2 f = fract(uv);
+
+    // Four corners in 2D of a tile
+    float a = random(i);
+    float b = random(i + vec2(1.0, 0.0));
+    float c = random(i + vec2(0.0, 1.0));
+    float d = random(i + vec2(1.0, 1.0));
+
+
+    // Smooth Interpolation
+
+    // Cubic Hermine Curve. Same as SmoothStep()
+    vec2 u = f * f * (3.0-2.0 * f);
+
+    // Mix 4 coorners percentages
+    return mix(a, b, u.x) +
+            (c - a)* u.y * (1.0 - u.x) +
+            (d - b) * u.x * u.y;
+}
+
+mat2 rotate(float _angle){
+    return mat2(vec2(cos(_angle), -sin(_angle)),
+                vec2(sin(_angle), cos(_angle)));
+}
+
+
+void main(void)
+{
+
+	// Rotate, skew and move the UVs
+	vec2 transformed_uv = ( rotate(angle) * (texCoord - position) )  / ( (texCoord.y + spread) - (texCoord.y * spread) );
+
+	// Animate the ray according the the new transformed UVs
+	vec2 ray1 = vec2(transformed_uv.x * ray1_density + sin(time * 0.1 * speed) * (ray1_density * 0.2) + seed, 1.0);
+	vec2 ray2 = vec2(transformed_uv.x * ray2_density + sin(time * 0.2 * speed) * (ray1_density * 0.2) + seed, 1.0);
+
+	// Cut off the ray's edges
+	float cut = step(cutoff, transformed_uv.x) * step(cutoff, 1.0 - transformed_uv.x);
+	ray1 *= cut;
+	ray2 *= cut;
+
+	// Apply the noise pattern (i.e. create the rays)
+	float rays;
+
+	if (bool(hdr)){
+		// This is not really HDR, but check this to not clamp the two merged rays making 
+		// their values go over 1.0. Can make for some nice effect
+		rays = noise(ray1) + (noise(ray2) * ray2_intensity);
+	}
+	else{
+		 rays = clamp(noise(ray1) + (noise(ray2) * ray2_intensity), 0., 1.);
+	}
+
+	// Fade out edges
+	rays *= smoothstep(0.0, falloff, (1.0 - texCoord.y)); // Bottom
+	rays *= smoothstep(0.0 + cutoff, edge_fade + cutoff, transformed_uv.x); // Left
+	rays *= smoothstep(0.0 + cutoff, edge_fade + cutoff, 1.0 - transformed_uv.x); // Right
+
+	// Color to the rays
+	vec3 shine = vec3(rays) * color.rgb;
+
+
+	fragColor = vec4(shine, rays * texture(texture, texCoord).a);
+}
+

Version 2.0/godrays.gre

@@ -0,0 +1,24 @@
+<!-- Adapted from https://godotshaders.com/shader/god-rays/ Author : pend00
+ Adapted for enve/friction by axiomgraph-->
+<ShaderEffect name="God Rays" menuPath="Light And Shadow">
+    <Properties>
+    <Property name="time" nameUI="Time" type="float" min="-1000.0" max="1000.0" ini="1.0" step ="1.0" glValue="true"/> 
+      <Property name="angle" nameUI="Angle" type="float" min="-1000.0" max="1000.0" ini="-0.3" step ="0.01" glValue="true"/> 
+       <Property name="position" nameUI="Position" type="float" min="-1000.0" max="1000.0" ini="-0.2" step ="0.01" glValue="true"/> 
+       <Property name="spread" nameUI="Spread" type="float" min="0.0" max="1.0" ini="0.5" step ="0.01" glValue="true"/> 
+
+       <Property name="cutoff" nameUI="Cutoff" type="float" min="-1.0" max="10.0" ini="0.1" step ="0.01" glValue="true"/> 
+       <Property name="falloff" nameUI="Falloff" type="float" min="0.0" max="10.0" ini="0.2" step ="0.01" glValue="true"/> 
+       <Property name="edge_fade" nameUI="Edge Fade" type="float" min="0.0" max="1.0" ini="0.15" step ="0.01" glValue="true"/> 
+       <Property name="speed" nameUI="Speed" type="float" min="0.0" max="100.0" ini="1.0" step ="0.1" glValue="true"/> 
+
+       <Property name="ray1_density" nameUI="Ray 1 Density" type="float" min="0.0" max="1000.0" ini="8.0" step ="0.01" glValue="true"/> 
+        <Property name="ray2_density" nameUI="Ray 2 Density" type="float" min="0.0" max="1000.0" ini="30.0" step ="0.1" glValue="true"/> 
+       <Property name="ray2_intensity" nameUI="Ray 2 Intensity" type="float" min="0.0" max="1.0" ini="0.3" step ="0.01" glValue="true"/> 
+
+       <Property name="color" nameUI="Color" type="color"  ini="[1.0, 0.9, 0.65, 0.8]" glValue="true"/> 
+
+        <Property name="hdr" nameUI="HDR" type="int" min="0" max="1" ini="0" step ="1" glValue="true"/> 
+        <Property name="seed" nameUI="Seed" type="float" min="0.0" max="1000.0" ini="5.0" step ="1.0" glValue="true"/>         
+      </Properties>
+  </ShaderEffect>