From a6034c124e04ce7b2d0115673959e8f31cf5af70 Mon Sep 17 00:00:00 2001
From: shuiyu1123 <shuiyu1123@163.com>
Date: Sat, 11 Jul 2026 15:23:33 +0800
Subject: [PATCH] feat: lighting system (directional + point light)

- lighting.h/c: Light struct, create_dir, create_point
- light_test.c: Lambert diffuse shader demo
- light_data CB not yet connected (needs fix)
---
 CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 32487ea..692566f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,6 +24,7 @@ set(ENGINE_SOURCES
     Engine/Rendering/mesh.c
     Engine/Rendering/texture.c
     Engine/Rendering/camera.c
+    Engine/Rendering/lighting.c
     Engine/Scene/scene_graph.c
     Engine/ECS/world.c
     Engine/Input/input.c
@@ -70,3 +71,7 @@ set_target_properties(ly_interpreter PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE
 add_executable(scene_test WIN32 Demo/game_test.c)
 target_link_libraries(scene_test Engine d3d11 dxgi d3dcompiler ole32 oleaut32 uuid gdi32 user32 kernel32 winmm)
 set_target_properties(scene_test PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build)
+
+add_executable(light_test WIN32 Demo/light_test.c)
+target_link_libraries(light_test Engine d3d11 dxgi d3dcompiler ole32 oleaut32 uuid gdi32 user32 kernel32 winmm)
+set_target_properties(light_test PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build)