1 files changed, 13 insertions, 9 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/exposureF.glsl b/indra/newview/app_settings/shaders/class1/deferred/exposureF.glsl
index 709b47dcbd..eff7221ae7 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/exposureF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/exposureF.glsl
@@ -1,34 +1,36 @@
-/**
+/** 
  * @file exposureF.glsl
  *
  * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2023, Linden Research, Inc.
- *
+ * 
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- *
+ * 
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- *
+ * 
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
+ * 
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
-
+ 
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_color;
 
 uniform sampler2D emissiveRect;
+#ifdef USE_LAST_EXPOSURE
 uniform sampler2D exposureMap;
+#endif
 
 uniform float dt;
 uniform vec2 noiseVec;
@@ -41,7 +43,7 @@ float lum(vec3 col)
     return dot(l, col);
 }
 
-void main()
+void main() 
 {
     vec2 tc = vec2(0.5,0.5);
 
@@ -51,11 +53,13 @@ void main()
     L /= max_L;
     L = pow(L, 2.0);
     float s = mix(dynamic_exposure_params.z, dynamic_exposure_params.y, L);
-
+    
+#ifdef USE_LAST_EXPOSURE
     float prev = texture(exposureMap, vec2(0.5,0.5)).r;
 
     s = mix(prev, s, min(dt*2.0*abs(prev-s), 0.04));
-
+#endif
+    
     frag_color = max(vec4(s, s, s, dt), vec4(0.0));
 }