From a9652327f1c5f3b2734ccc2e43c8ae72596e09bf Mon Sep 17 00:00:00 2001
From: MihailRis <mexaruc@gmail.com>
Date: Thu, 3 Jul 2025 20:12:11 +0300
Subject: [PATCH] improve ssao

---
 res/shaders/effects/deferred_lighting.glsl | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/res/shaders/effects/deferred_lighting.glsl b/res/shaders/effects/deferred_lighting.glsl
index ea9c32bb..79c01435 100644
--- a/res/shaders/effects/deferred_lighting.glsl
+++ b/res/shaders/effects/deferred_lighting.glsl
@@ -1,11 +1,15 @@
 vec4 effect() {
     float ssao = 0.0;
-    for (int y = -1; y <= 1; y++) {
-        for (int x = -1; x <= 1; x++) {
+    float z = texture(u_position, v_uv).z;
+    for (int y = -2; y <= 2; y++) {
+        for (int x = -2; x <= 2; x++) {
             vec2 offset = vec2(x, y) / u_screenSize;
-            ssao += texture(u_ssao, v_uv + offset * 2.0).r;
+            if (abs(z - texture(u_position, v_uv + offset * 2.0).z) > 0.05)
+                ssao += 1.0;
+            else
+                ssao += texture(u_ssao, v_uv + offset * 2.0).r;
         }
     }
-    ssao /= 9.0;
+    ssao /= 24.0;
     return vec4(texture(u_screen, v_uv).rgb * mix(1.0, ssao, 1.0), 1.0);
 }