From 775090fdda30c18542d19d7dcf7a804ea773e597 Mon Sep 17 00:00:00 2001
From: Romain Guy <romainguy@curious-creature.com>
Date: Fri, 15 Oct 2021 17:30:06 -0700
Subject: [PATCH] Re-fix tests

---
 libs/imageio/src/ImageDecoder.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/libs/imageio/src/ImageDecoder.cpp b/libs/imageio/src/ImageDecoder.cpp
index 7336e9ef4d..b0126a167b 100644
--- a/libs/imageio/src/ImageDecoder.cpp
+++ b/libs/imageio/src/ImageDecoder.cpp
@@ -234,10 +234,14 @@ LinearImage PNGDecoder::decode() {
             png_set_tRNS_to_alpha(mPNG);
         }
         if (getColorSpace() == ImageDecoder::ColorSpace::SRGB) {
-            png_set_alpha_mode(mPNG, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB);
+            double gamma = 1.0;
+            png_get_gAMA(mPNG, mInfo, &gamma);
+            if (gamma != 1.0) {
+                png_set_alpha_mode(mPNG, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB);
+            }
         } else {
-            png_set_alpha_mode(mPNG, PNG_ALPHA_PNG, PNG_GAMMA_LINEAR);
             png_set_gamma_fixed(mPNG, PNG_FP_1, PNG_FP_1);
+            png_set_alpha_mode(mPNG, PNG_ALPHA_PNG, PNG_GAMMA_LINEAR);
         }
         if (bitDepth < 16) {
             png_set_expand_16(mPNG);