From 6e46c54e6e4ce042ff499738bf0fd6cc43ac0bde Mon Sep 17 00:00:00 2001
From: sergeypdev <sergeypoznyak@protonmail.com>
Date: Mon, 12 Feb 2024 16:40:31 +0400
Subject: [PATCH] Gamma correction and add missing light intensity

---
 assets/shaders/mesh.frag.glsl | 6 +++++-
 src/game.zig                  | 8 ++++----
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/assets/shaders/mesh.frag.glsl b/assets/shaders/mesh.frag.glsl
index 1891868..c1903a7 100644
--- a/assets/shaders/mesh.frag.glsl
+++ b/assets/shaders/mesh.frag.glsl
@@ -38,8 +38,12 @@ void main() {
 
     float ndotl = max(dot(L, normal), 0);
 
-    finalColor += ndotl * lights[i].color.xyz * att * diffuseColor;
+    finalColor += ndotl * lights[i].color.w * lights[i].color.xyz * att * diffuseColor;
+
   }
 
   FragColor = vec4(finalColor, 1.0f);
+
+  float gamma = 2.2;
+  FragColor.rgb = pow(FragColor.rgb, vec3(1.0/gamma));
 }
diff --git a/src/game.zig b/src/game.zig
index 49aad98..366cf96 100644
--- a/src/game.zig
+++ b/src/game.zig
@@ -419,7 +419,7 @@ export fn game_init(global_allocator: *std.mem.Allocator) void {
     _ = g_mem.world.addEntity(.{
         .transform = .{ .pos = Vec3.new(1, 1, 0) },
         .flags = .{ .point_light = true, .rotate = true },
-        .point_light = .{ .color_intensity = Vec4.new(1.0, 0.5, 0.2, 1.0), .radius = 1 },
+        .point_light = .{ .color_intensity = Vec4.new(1.0, 0.3, 0.1, 100.0), .radius = 0.1 },
         .rotate = .{ .axis = Vec3.up(), .rate = 60 },
     });
 
@@ -427,10 +427,10 @@ export fn game_init(global_allocator: *std.mem.Allocator) void {
         .transform = .{ .pos = Vec3.new(-1, 1, 0) },
         .flags = .{ .point_light = true, .rotate = true },
         .point_light = .{
-            .color_intensity = Vec4.new(0.2, 0.5, 1.0, 1.0),
-            .radius = 1,
+            .color_intensity = Vec4.new(0.2, 0.5, 1.0, 100.0),
+            .radius = 0.1,
         },
-        .rotate = .{ .axis = Vec3.up(), .rate = -60 },
+        .rotate = .{ .axis = Vec3.up(), .rate = -20 },
     });
 
     // Plane