Fix PSNR formula.

17 years ago · cc5bb56f3f
parent bfb4c39a3d
commit cc5bb56f3f
1 changed files with 1 additions and 1 deletions
--- a/src/nvimage/nvtt/tools/imgdiff.cpp
+++ b/src/nvimage/nvtt/tools/imgdiff.cpp
@ -85,7 +85,7 @@ struct Error
 		mabse /= samples;
 		mse /= samples;
 		rmse = sqrt(mse);
-		psnr = (rmse == 0) ? 999.0f : 20.0f * log10(32767.0 / rmse);
+		psnr = (rmse == 0) ? 999.0f : 20.0f * log10(255.0 / rmse);
 	}

 	void print()