From 50485f5d738288ed99d61db3c082b7cb495a0b56 Mon Sep 17 00:00:00 2001
From: Person <Person@QCP2>
Date: Tue, 22 Aug 2017 18:07:43 -0700
Subject: [PATCH] Bug fixes: --EXR images needed the values to be squared to
 look correct.

---
 Source/EmberCommon/EmberCommon.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Source/EmberCommon/EmberCommon.h b/Source/EmberCommon/EmberCommon.h
index 71c56ad..0093d54 100644
--- a/Source/EmberCommon/EmberCommon.h
+++ b/Source/EmberCommon/EmberCommon.h
@@ -229,6 +229,7 @@ static void Rgba32ToRgba16(v4F* rgba, glm::uint16* rgb, size_t width, size_t hei
 /// <summary>
 /// Convert an RGBA 32-bit float buffer to an EXR RGBA 32-bit float buffer.
 /// The two buffers can point to the same memory location if needed.
+/// Note that this squares the values coming in, for some reason EXR expects that.
 /// </summary>
 /// <param name="rgba">The RGBA 32-bit float buffer</param>
 /// <param name="rgb">The EXR RGBA 32-bit float buffer</param>
@@ -239,9 +240,9 @@ static void Rgba32ToRgbaExr(v4F* rgba, Rgba* ilmfRgba, size_t width, size_t heig
 {
 	for (size_t i = 0; i < (width * height); i++)
 	{
-		ilmfRgba[i].r = Clamp<float>(rgba[i].r, 0.0f, 1.0f);
-		ilmfRgba[i].g = Clamp<float>(rgba[i].g, 0.0f, 1.0f);
-		ilmfRgba[i].b = Clamp<float>(rgba[i].b, 0.0f, 1.0f);
+		ilmfRgba[i].r = Clamp<float>(Sqr(rgba[i].r), 0.0f, 1.0f);
+		ilmfRgba[i].g = Clamp<float>(Sqr(rgba[i].g), 0.0f, 1.0f);
+		ilmfRgba[i].b = Clamp<float>(Sqr(rgba[i].b), 0.0f, 1.0f);
 		ilmfRgba[i].a = doAlpha ? Clamp<float>(rgba[i].a * 1.0f, 0.0f, 1.0f) : 1.0f;
 	}
 }