From b08a38ce74c1cd26f06a4c5076b092e2e3e815b9 Mon Sep 17 00:00:00 2001
From: Adrian G L <adrian@lauterer.it>
Date: Wed, 17 Sep 2025 22:10:42 +0200
Subject: [PATCH] feat: apply translation and perspective projection to
 transform matrix before shader upload

---
 src/main.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main.rs b/src/main.rs
index c592a97..9b2b942 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -315,6 +315,13 @@ fn main() {
                     5 => transform[(1,3)] = v, // f
                     _ => {}
                 }
+                // move scene into viewable negative z range
+                let translation: glm::Mat4 = glm::translation(&glm::vec3(0.0, 0.0, -5.0));
+                transform = translation * transform;
+                // apply perspective projection: (aspect, fovy radians, near, far)
+                let projection: glm::Mat4 =
+                    glm::perspective(window_aspect_ratio, std::f32::consts::PI / 4.0, 1.0, 100.0);
+                transform = projection * transform;
                 gl::UniformMatrix4fv(transform_loc, 1, gl::FALSE, transform.as_ptr());
                 gl::BindVertexArray(my_vao);
                 gl::DrawElements(