From 8f906c3139a813b9a829821944b464b3facdad59 Mon Sep 17 00:00:00 2001
From: hachem <im@hachem.wtf>
Date: Sat, 16 Aug 2025 15:36:25 +0200
Subject: fix: first optimization

---
 src/engine/engine.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'src/engine/engine.cpp')

diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index c2a84a8..c9a23ca 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -39,6 +39,8 @@ namespace Donut
             + 16 * (sizeof(glm::vec4) + sizeof(glm::vec4))
             + 16 * sizeof(float);
         m_objects_ubo = UniformBuffer::create(obj_ubo_size, 3);
+        
+        m_simulation_ubo = UniformBuffer::create(sizeof(int) * 2 + sizeof(float) * 2, 4);
 
         auto result = quad_vao();
         m_quad_vao = result.first;
@@ -97,6 +99,7 @@ namespace Donut
         upload_camera_ubo(cam);
         upload_disk_ubo();
         upload_objects_ubo(m_objects);
+        upload_simulation_ubo();
         m_texture->bind_as_image(0, false);
 
         uint32_t groups_x = static_cast<uint32_t>(std::ceil(cw / 16.0f));
@@ -173,6 +176,25 @@ namespace Donut
         m_disk_ubo->bind(2);
     }
 
+    void Engine::upload_simulation_ubo()
+    {
+        struct UBOData
+        {
+            int max_steps_moving;
+            int max_steps_static;
+            float early_exit_distance;
+            int padding;
+        } data;
+
+        data.max_steps_moving    = m_max_steps_moving;
+        data.max_steps_static    = m_max_steps_static;
+        data.early_exit_distance = m_early_exit_distance;
+        data.padding           = 0;
+
+        m_simulation_ubo->set_data(&data, sizeof(data));
+        m_simulation_ubo->bind(4);
+    }
+
     void Engine::update_physics(float delta_time)
     {
         for (auto& obj : m_objects)
-- 
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