first commit

shaders/skybox.vert

@@ -0,0 +1,35 @@
+#version 460 core
+// layout (location = 0) in vec3 a_position;
+
+struct PositionData {
+    float x;
+    float y;
+    float z;
+};
+
+layout (binding = 0, std430) restrict readonly buffer _positions {
+    PositionData pos_data[];
+};
+
+vec4 getPosition(int index) {
+    return vec4(
+        pos_data[index].x,
+        pos_data[index].y,
+        pos_data[index].z,
+        1
+    );
+}
+
+layout (binding = 0, std140) uniform SharedMatrices {
+    mat4 projection;
+    mat4 cam_matrix;
+};
+
+out vec3 v_texcoord;
+
+void main() {
+    vec4 a_position = getPosition(gl_VertexID);
+    vec4 WVP_position = projection * mat4(mat3(cam_matrix)) * a_position;
+    gl_Position = WVP_position.xyww;
+    v_texcoord   = a_position.xyz;
+}