shaders-vertex_displacement init

examples/shaders/resources/shaders/glsl330/vertex_displacement.vs

@@ -0,0 +1,43 @@
+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+in vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 matModel;
+uniform mat4 matNormal;
+
+uniform float time;
+
+// Output vertex attributes (to fragment shader)
+out vec3 fragPosition;
+out vec2 fragTexCoord;
+out vec4 fragColor;
+out vec3 fragNormal;
+
+float perlinNoise(vec2 p);
+
+void main()
+{
+    float height = perlinNoise(vertexTexCoord +  vec2(time, time) * 0.01);
+    vec3 displacedPosition = vertexPosition + vec3(0.0, height*2.0, 0.0);
+
+    // Send vertex attributes to fragment shader
+    fragPosition = vec3(matModel*vec4(displacedPosition, 1.0));
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    fragNormal = normalize(vec3(matNormal*vec4(vertexNormal, 1.0)));
+
+    // Calculate final vertex position
+    gl_Position = mvp*vec4(displacedPosition, 1.0);
+}
+
+float perlinNoise(vec2 p) {
+    // Implement or call your Perlin noise function here
+    // This is a placeholder function
+    return fract(sin(dot(p ,vec2(12.9898,78.233))) * 43758.5453);
+}