1 files changed, 13 insertions(+), 1 deletions(-)

M src/shaders/frag.glsl

@@ 1,5 1,7 @@
 #version 330
 
+#define M_PI 3.1415926535897932384626433832795
+
 uniform float time;
 uniform vec3 cam_pos;
 uniform sampler2D tex;


@@ 9,9 11,14 @@ uniform sampler1D dir_lights;
 in vec3 g_normal;
 in vec3 g_pos;
 in vec2 g_texture;
+in vec2 g_diff;
 
 out vec4 frag_output;
 
+float rand(vec2 co) {
+    return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);
+}
+
 void main() {
     int size = textureSize(dir_lights, 0);
     float lum = 0.0;


@@ 26,5 33,10 @@ void main() {
 
     float dist = abs(distance(cam_pos, g_pos)) / 80.0;
 
-    frag_output = texture(tex, g_texture) * vec4(vec3((0.6 * avg_lum) + (0.4 * dist)), 1.0);
+    float alpha = cos(g_diff.x * 2 * M_PI) + cos(g_diff.y * 2 * M_PI);
+    alpha += smoothstep(0.2, 0.8, rand(g_pos.xy));
+
+    vec4 lighting_col = vec4(vec3((0.6 * avg_lum) + (0.4 * dist)), alpha);
+
+    frag_output = texture(tex, g_texture) * lighting_col;
 }