1 files changed, 25 insertions, 0 deletions
diff --git a/engine-ocean/Resources/Shaders/grass.vert b/engine-ocean/Resources/Shaders/grass.vert
new file mode 100644
index 0000000..647f171
--- /dev/null
+++ b/engine-ocean/Resources/Shaders/grass.vert
@@ -0,0 +1,25 @@
+#version 330 core
+layout (location = 0) in vec3 pos;
+
+out VS_OUT {
+  float visibility;
+} vs_out;
+
+uniform mat4 view, projection;
+uniform vec4 plane;
+
+// fog
+const float density = .01f;
+const float gradient = 4.f;
+
+void main() {
+
+    gl_ClipDistance[0]=dot(vec4(pos, 1.f), plane);
+
+    vec4 positionRelationToCam = view * vec4(pos, 1.f);
+    float distance = length(positionRelationToCam.xyz);
+    float vis = exp(-pow((distance*density), gradient));
+    vs_out.visibility = clamp(vis, 0.f, 1.f);
+
+    gl_Position = vec4(pos, 1.0);
+}