From fdc568c4bcb65cf260b49118f2eb8881084f7944 Mon Sep 17 00:00:00 2001
From: Daniel Bross <daniel@brossferatu.com>
Date: Sun, 6 Jul 2025 23:58:40 +0200
Subject: [PATCH] Removed old shadow map code

---
 module.jai                  |  2 --
 renderer/engine_buffers.jai | 64 -------------------------------------
 2 files changed, 66 deletions(-)

diff --git a/module.jai b/module.jai
index 76c0ae7..f9950bd 100644
--- a/module.jai
+++ b/module.jai
@@ -41,8 +41,6 @@ Engine_Core :: struct {
     directional_light_buffer : Buffer_Handle;
     point_light_buffer : Buffer_Handle;
 
-    on_frustum_render: (Vector3, Vector3);
-
     procs: struct {
        on_scene_loaded: (*Scene, Engine_Mode);
        on_pre_scene_loaded: (*Scene, Engine_Mode);
diff --git a/renderer/engine_buffers.jai b/renderer/engine_buffers.jai
index 85c88c2..fd45437 100644
--- a/renderer/engine_buffers.jai
+++ b/renderer/engine_buffers.jai
@@ -44,70 +44,6 @@ calc_tight_light_projection :: (camera: Camera, light_direction: Vector3) -> Mat
     return light_projection * light_view;
 }
 
-calculate_sun_transform :: (camera: Camera, light_direction: Vector3) -> Matrix4 {
-     success, inv_viewproj := inverse(camera.projection_matrix * camera.view_matrix);
-
-    view : Matrix4;
-    proj : Matrix4;
-
-    ndc : [8] Vector4 = .[
-        .{-1, -1, 0, 1}, .{1, -1, 0, 1}, .{-1, 1, 0, 1}, .{1, 1, 0, 1}, // near plane
-        .{-1, -1, 1, 1}, .{1, -1, 1, 1}, .{-1, 1, 1, 1}, .{1, 1, 1, 1} // far plane
-    ];
-
-    corners : [8] Vector3;
-    center : Vector3;
-
-    for i: 0..7 {
-        world := inv_viewproj * ndc[i];
-        corners[i] = world.xyz / world.w;
-        center += corners[i];
-    }
-
-    center /= 8.0;
-
-    {
-        // Build light basis
-        forward := normalize(-light_direction);
-        up := ifx abs(forward.y) > 0.99 then Vector3.{0, 0, 1} else .{0, 1, 0};
-        right := normalize(cross(up, forward));
-        up = cross(forward, right);
-
-        // Build view matrix manually (row-major layout)
-        view = Matrix4_Identity;
-        view.v[0] = Vector4.{right.x, right.y, right.z, 0.0};
-        view.v[1] = Vector4.{up.x, up.y, up.z, 0.0};
-        view.v[2] = Vector4.{forward.x, forward.y, forward.z, 0.0};
-        view.v[3] = Vector4.{-dot(right, center),
-                              -dot(up, center),
-                              -dot(forward, center),
-                              1.0};
-    }
-
-    {
-        min_bounds : Vector3 = .{FLOAT32_MAX, FLOAT32_MAX, FLOAT32_MAX};
-        max_bounds : Vector3 = .{-FLOAT32_MAX, -FLOAT32_MAX, -FLOAT32_MAX};
-
-        for i: 0..7 {
-            ls := transform_position(corners[i], view);
-            min_bounds = min(min_bounds, ls);
-            max_bounds = max(max_bounds, ls);
-        }
-
-        // Step 5: Build orthographic projection (DX11 Z: 0..1)
-        left   := min_bounds.x;
-        right  := max_bounds.x;
-        bottom := min_bounds.y;
-        top    := max_bounds.y;
-        near_z  := min_bounds.z;
-        far_z   := max_bounds.z;
-
-        proj = orthographic_lh_projection_matrix(left, right, bottom, top, near_z, far_z);
-    }
-
-    return proj * view;
-}
-
 update_light_buffer :: () {
     scene := engine.current_scene;