1 files changed, 7 insertions, 1 deletions
diff --git a/indra/newview/llgltfmaterialpreviewmgr.cpp b/indra/newview/llgltfmaterialpreviewmgr.cpp
index 36bd552c31..1c39f1ae7d 100644
--- a/indra/newview/llgltfmaterialpreviewmgr.cpp
+++ b/indra/newview/llgltfmaterialpreviewmgr.cpp
@@ -517,9 +517,12 @@ BOOL LLGLTFPreviewTexture::render()
         screen.flush();
     }
 
+    // *HACK: Hide mExposureMap from generateExposure
+    gPipeline.mExposureMap.swapFBORefs(gPipeline.mLastExposure);
+
     gPipeline.copyScreenSpaceReflections(&screen, &gPipeline.mSceneMap);
     gPipeline.generateLuminance(&screen, &gPipeline.mLuminanceMap);
-    gPipeline.generateExposure(&gPipeline.mLuminanceMap, &gPipeline.mExposureMap);
+    gPipeline.generateExposure(&gPipeline.mLuminanceMap, &gPipeline.mExposureMap, /*use_history = */ false);
     gPipeline.gammaCorrect(&screen, &gPipeline.mPostMap);
     LLVertexBuffer::unbind();
     gPipeline.generateGlow(&gPipeline.mPostMap);
@@ -527,6 +530,9 @@ BOOL LLGLTFPreviewTexture::render()
 	gPipeline.renderDoF(&screen, &gPipeline.mPostMap);
 	gPipeline.applyFXAA(&gPipeline.mPostMap, &screen);
 
+    // *HACK: Restore mExposureMap (it will be consumed by generateExposure next frame)
+    gPipeline.mExposureMap.swapFBORefs(gPipeline.mLastExposure);
+
     // Final render
 
 	gDeferredPostNoDoFProgram.bind();