From 12829892b262a0c7fcccba9198e5b6b31b2a8015 Mon Sep 17 00:00:00 2001
From: Loic Guegan <manzerbredes@mailbox.org>
Date: Thu, 9 Jul 2020 13:02:31 +0200
Subject: Cleaning code

---
 resources/shaders/julia.frag | 48 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 resources/shaders/julia.frag

(limited to 'resources/shaders/julia.frag')

diff --git a/resources/shaders/julia.frag b/resources/shaders/julia.frag
new file mode 100644
index 0000000..12d923b
--- /dev/null
+++ b/resources/shaders/julia.frag
@@ -0,0 +1,48 @@
+// ----- Vertex Shader -----
+#version 410 core
+
+layout(location = 0) in vec3 position;
+uniform mat4 projection;
+uniform mat4 model;
+
+void main(){
+  gl_Position =  projection * model * vec4(position,1);
+}
+
+// ----- Fragment Shader -----
+
+#version 410 core
+
+uniform vec2 resolution;
+uniform float time;
+
+out vec3 color;
+
+#define ACCURACY 1000
+#define LIMIT 1000
+
+vec2 cmult(vec2 z1,vec2 z2){
+	return(vec2(z1.x*z2.x-z1.y*z2.y,z1.x*z2.y+z1.y*z2.x));
+}
+
+vec2 IsDiverging(vec2 coord){
+	vec2 z=vec2(coord.x,coord.y);
+	int i;
+	for(i=0;i<ACCURACY;i++){
+		z=cmult(z,z)+vec2(-0.3,0.5);
+		if(length(z) > LIMIT)
+			break;
+				
+	}
+	return(z);
+}
+
+
+void main()
+{
+	vec2 coord=gl_FragCoord.xy/resolution.xy;
+	coord-=0.5;
+	coord/=(time/10);
+	float d=length(IsDiverging(coord));
+	color=vec3(LIMIT/(d*2),0,0);
+}
-- 
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