first commit

assets/shaders/skybox.vert

@@ -0,0 +1,31 @@
+#version 450 core
+out gl_PerVertex { vec4 gl_Position; };
+
+layout(std140, binding = 0) uniform PerFrame {
+  mat4 uView;
+  mat4 uProj;
+  vec4 uLightDir; // unused here
+};
+layout(std140, binding = 1) uniform PerObject {
+  mat4 uModel; // use this to scale the cube (e.g., 3.0)
+};
+
+layout(location = 0) in  vec3 aPos;
+layout(location = 1) in  vec3 aNormal; // present, unused
+layout(location = 2) in  vec2 aUV;     // present, unused
+
+layout(location = 0) out vec3 vDir;    // explicit location for SSO
+
+void main() {
+  // Use uModel to scale your standard cube (e.g., 3.0) from CPU.
+  vec3 pLocal = mat3(uModel) * aPos;
+
+  // Rotation-only view (drop translation)
+  mat3 R = mat3(uView);
+
+   vDir = pLocal;
+
+  // Glue the cube to the camera (no translation), push to far plane
+  vec4 p = uProj * vec4(R * pLocal, 1.0);
+  gl_Position = vec4(p.xy, 1.0, 1.0);
+}