From 587289e1063e0c2a4227994675996b2a12bd974e Mon Sep 17 00:00:00 2001
From: papadanku <115061077+papadanku@users.noreply.github.com>
Date: Tue, 9 Jul 2024 22:04:29 -0700
Subject: [PATCH] cCamera: Added exposure compensation range

---
 shaders/shared/cCamera.fxh | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/shaders/shared/cCamera.fxh b/shaders/shared/cCamera.fxh
index ce21579..dd9df57 100644
--- a/shaders/shared/cCamera.fxh
+++ b/shaders/shared/cCamera.fxh
@@ -34,15 +34,25 @@
             ui_label = "Exposure Compensation";
             ui_type = "slider";
             ui_step = 0.001;
-            ui_min = -3.0;
-            ui_max = 3.0;
+            ui_min = -4.0;
+            ui_max = 4.0;
         > = 0.0;
 
+        uniform float _CShadeExposureRange <
+            ui_category = "Output: AutoExposure";
+            ui_label = "Exposure Compensation Range";
+            ui_type = "slider";
+            ui_step = 0.001;
+            ui_min = 0.0;
+            ui_max = 4.0;
+        > = 1.0;
+
         float3 ApplyAutoExposure(float3 Color, float Luma)
         {
             float LumaAverage = exp(Luma);
             float Ev100 = log2(LumaAverage * 100.0 / 12.5);
             Ev100 -= _CShadeExposureBias; // optional manual bias
+            Ev100 = clamp(Ev100, -_CShadeExposureRange, _CShadeExposureRange);
             float Exposure = 1.0 / (1.2 * exp2(Ev100));
             return Color * Exposure;
         }