1 files changed, 59 insertions, 0 deletions
diff --git a/resources/shaders/main.frag b/resources/shaders/main.frag
new file mode 100644
index 0000000..590b849
--- /dev/null
+++ b/resources/shaders/main.frag
@@ -0,0 +1,59 @@
+#version 330 core
+
+uniform vec2 resolution;
+uniform float time;
+
+out vec3 color;
+
+#define MAX_STEPS 100
+#define MAX_DIST 100.
+#define SURF_DIST .01
+#define NORMAL_ACCURACY 0.01
+
+#include "objects/sphere.frag"
+float GetDist(vec3 p) {
+    float sphereDist =  SphereSDF(p,vec3(0, 1, 6),1);
+    float planeDist = p.y;
+    
+    float d = min(sphereDist, planeDist);
+    return d;
+}
+
+#include "algorithms/raymarching.frag"
+#include "algorithms/normal.frag"
+
+
+
+float GetLight(vec3 p) {
+    vec3 lightPos = vec3(0, 5, 6);
+    lightPos.xz += vec2(sin(time), cos(time))*2.;
+    vec3 l = normalize(lightPos-p);
+    vec3 n = GetNormal(p);
+    
+    float dif = clamp(dot(n, l), 0., 1.);
+    float d = RayMarch(p+n*SURF_DIST*2., l);
+    if(d<length(lightPos-p)) dif *= .1;
+    
+    return dif;
+}
+
+void main()
+{
+    vec2 uv = (gl_FragCoord.xy-.5*resolution.xy)/resolution.y;
+
+    vec3 col = vec3(0);
+    
+    vec3 ro = vec3(0, 1, 0);
+    vec3 rd = normalize(vec3(uv.x, uv.y, 1));
+
+    float d = RayMarch(ro, rd);
+    
+    vec3 p = ro + rd * d;
+    
+    float dif = GetLight(p);
+    col = vec3(dif);
+    
+    col = pow(col, vec3(.4545));	// gamma correction
+    
+    color = col;
+}