add first person demo

1 files changed, 18 insertions, 0 deletions

diff --git a/demo/first_person/height.fs b/demo/first_person/height.fs
new file mode 100644
index 0000000..19315b9
--- /dev/null
+++ b/demo/first_person/height.fs
@@ -0,0 +1,18 @@
+#version 330 core
+
+in vec3 pos;
+in vec3 normal;
+in vec2 uv; 
+  
+uniform sampler2D grass; 
+
+out vec4 fragment_color; 
+
+
+void main()
+{
+    vec4 tex = texture(grass, uv);
+    vec4 grey = vec4(0.3, 0.3, 0.3, 1.0);
+    float steepness = dot(vec3(0, 1, 0), normal);
+    fragment_color = mix(tex, grey, steepness);
+}