From e23695f60a9af67d9bcb334c608dd9458aadfa17 Mon Sep 17 00:00:00 2001
From: WestLangley <WestLangley@users.noreply.github.com>
Date: Thu, 3 Sep 2020 18:16:02 -0400
Subject: [PATCH] Properly handle exr files on drag-and-drop

---
 examples/webgl_materials_matcap.html | 32 ++++++++++++++++++++++++----
 1 file changed, 28 insertions(+), 4 deletions(-)

diff --git a/examples/webgl_materials_matcap.html b/examples/webgl_materials_matcap.html
index f63b2c486c5546..139706b579efd9 100644
--- a/examples/webgl_materials_matcap.html
+++ b/examples/webgl_materials_matcap.html
@@ -62,11 +62,14 @@
 				var manager = new THREE.LoadingManager( render );
 
 				// matcap
-				var loader = new EXRLoader( manager );
+				var loader = new EXRLoader( manager )
+					.setDataType( THREE.UnsignedByteType ); // default: FloatType
+
 				var matcap = loader.load( 'textures/matcaps/040full.exr' );
 
 				// normalmap
 				var loader = new THREE.TextureLoader( manager );
+
 				var normalmap = loader.load( 'models/gltf/LeePerrySmith/Infinite-Level_02_Tangent_SmoothUV.jpg' );
 
 				// model
@@ -179,6 +182,8 @@
 
 				var loader = new EXRLoader();
 
+				loader.setDataType( THREE.UnsignedByteType ); // default: FloatType
+
 				var texData = loader.parse( contents );
 
 				var texture = new THREE.DataTexture();
@@ -190,9 +195,28 @@
 				texture.format = texData.format;
 				texture.type = texData.type;
 
-				texture.generateMipmaps = false;
-				texture.magFilter = THREE.LinearFilter;
-				texture.minFilter = THREE.LinearFilter;
+				switch ( texture.type ) {
+
+					case THREE.UnsignedByteType:
+
+						texture.encoding = THREE.RGBEEncoding;
+						texture.minFilter = THREE.NearestFilter;
+						texture.magFilter = THREE.NearestFilter;
+						texture.generateMipmaps = false;
+						texture.flipY = false;
+						break;
+
+					case THREE.FloatType:
+					case THREE.HalfFloatType:
+
+						texture.encoding = THREE.LinearEncoding;
+						texture.minFilter = THREE.LinearFilter;
+						texture.magFilter = THREE.LinearFilter;
+						texture.generateMipmaps = false;
+						texture.flipY = false;
+						break;
+
+				}
 
 				updateMatcap( texture );