From 1bedff2affac95e715adac0fea590eb53b780c94 Mon Sep 17 00:00:00 2001
From: Anemunt <69436164+darkresident55@users.noreply.github.com>
Date: Sat, 27 Dec 2025 21:46:33 -0500
Subject: [PATCH] fixed light flickering when rotating an object.

---
 Resources/Shaders/postfx_bright_frag.glsl |  6 +++--
 Resources/Shaders/postfx_frag.glsl        | 30 ++++++++++-------------
 2 files changed, 17 insertions(+), 19 deletions(-)

diff --git a/Resources/Shaders/postfx_bright_frag.glsl b/Resources/Shaders/postfx_bright_frag.glsl
index 0e2369c..8482a18 100644
--- a/Resources/Shaders/postfx_bright_frag.glsl
+++ b/Resources/Shaders/postfx_bright_frag.glsl
@@ -9,7 +9,9 @@ uniform float threshold = 1.0;
 void main() {
     vec3 c = texture(sceneTex, TexCoord).rgb;
     float luma = dot(c, vec3(0.2125, 0.7154, 0.0721));
-    float bright = max(luma - threshold, 0.0);
-    vec3 masked = c * step(0.0, bright);
+    float knee = 0.25;
+    float w = clamp((luma - threshold) / max(knee, 1e-4), 0.0, 1.0);
+    w = w * w * (3.0 - 2.0 * w);
+    vec3 masked = c * w;
     FragColor = vec4(masked, 1.0);
 }
diff --git a/Resources/Shaders/postfx_frag.glsl b/Resources/Shaders/postfx_frag.glsl
index d2047ba..be3dc6e 100644
--- a/Resources/Shaders/postfx_frag.glsl
+++ b/Resources/Shaders/postfx_frag.glsl
@@ -42,17 +42,8 @@ vec3 applyColorAdjust(vec3 color) {
     return color;
 }
 
-vec3 sampleCombined(vec2 uv) {
-    vec3 c = texture(sceneTex, uv).rgb;
-    if (enableBloom) {
-        vec3 glow = texture(bloomTex, uv).rgb * bloomIntensity;
-        c += glow;
-    }
-    return c;
-}
-
-vec3 sampleAdjusted(vec2 uv) {
-    return applyColorAdjust(sampleCombined(uv));
+vec3 sampleBase(vec2 uv) {
+    return applyColorAdjust(texture(sceneTex, uv).rgb);
 }
 
 float luminance(vec3 c) {
@@ -66,24 +57,24 @@ float computeVignette(vec2 uv) {
 }
 
 vec3 applyChromatic(vec2 uv) {
-    vec3 base = sampleAdjusted(uv);
+    vec3 base = sampleBase(uv);
     vec2 dir = uv - vec2(0.5);
     float dist = max(length(dir), 0.0001);
     vec2 offset = normalize(dir) * chromaticAmount * (1.0 + dist * 2.0);
-    vec3 rSample = sampleAdjusted(uv + offset);
-    vec3 bSample = sampleAdjusted(uv - offset);
+    vec3 rSample = sampleBase(uv + offset);
+    vec3 bSample = sampleBase(uv - offset);
     vec3 ca = vec3(rSample.r, base.g, bSample.b);
     return mix(base, ca, 0.85);
 }
 
 float computeAOFactor(vec2 uv) {
-    vec3 centerColor = sampleAdjusted(uv);
+    vec3 centerColor = sampleBase(uv);
     float centerLum = luminance(centerColor);
     float occlusion = 0.0;
     vec2 directions[4] = vec2[](vec2(1.0, 0.0), vec2(-1.0, 0.0), vec2(0.0, 1.0), vec2(0.0, -1.0));
     for (int i = 0; i < 4; ++i) {
         vec2 sampleUv = uv + directions[i] * aoRadius;
-        vec3 sampleColor = sampleAdjusted(sampleUv);
+        vec3 sampleColor = sampleBase(sampleUv);
         float sampleLum = luminance(sampleColor);
         occlusion += max(0.0, centerLum - sampleLum);
     }
@@ -92,7 +83,7 @@ float computeAOFactor(vec2 uv) {
 }
 
 void main() {
-    vec3 color = sampleAdjusted(TexCoord);
+    vec3 color = sampleBase(TexCoord);
 
     if (enableChromatic) {
         color = applyChromatic(TexCoord);
@@ -132,5 +123,10 @@ void main() {
         }
     }
 
+    if (enableBloom) {
+        vec3 glow = texture(bloomTex, TexCoord).rgb * bloomIntensity;
+        color += glow;
+    }
+
     FragColor = vec4(color, 1.0);
 }