From 2120ba0b6fb3529f813baedbfdcec871eb22641d Mon Sep 17 00:00:00 2001
From: yuanjiajia <1139393632@qq.com>
Date: Wed, 7 Jun 2023 15:01:13 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B8=B2=E6=9F=93=E6=B5=8B=E5=BC=8F=20?=
 =?UTF-8?q?=E6=A1=88=E4=BE=8B=20=E5=BC=80=E5=8F=91?=
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---
 src/utils/MatHelper.php | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/src/utils/MatHelper.php b/src/utils/MatHelper.php
index 746a137..c6fae71 100644
--- a/src/utils/MatHelper.php
+++ b/src/utils/MatHelper.php
@@ -8,6 +8,7 @@ use Blobt\Luxcore\scene\texture\procedural\ImageMap;
 use Blobt\Luxcore\scene\texture\transform\NormalMap;
 use GuzzleHttp\Client;
 use GuzzleHttp\RequestOptions;
+use Imagick;
 
 class MatHelper{
 
@@ -73,15 +74,23 @@ class MatHelper{
             $textureHandle = fopen($textureSavaPath, "w");
             (new Client())->get($textureUrl, [RequestOptions::SINK => $textureHandle]);
 
-            $metallicTexture = new ImageMap(
-                ['file' => $textureSavaPath]
+            $metalnessTextureSavaPath = $downloadDir.'metalness_'.basename($textureUrl);
+            $metalnessTexture = new Imagick($textureSavaPath);
+            $metalnessTexture->separateImageChannel(Imagick::CHANNEL_BLUE);
+            $metalnessTexture->writeImage($metalnessTextureSavaPath);
+            $metalnessTexture = new ImageMap(
+                ['file' => $metalnessTextureSavaPath]
             );
-            $metallicTexture->mapping = $mapping;
-            $scene->registerTexture($metallicTexture);
-            $material->setMetallic($metallicTexture);
-
+            $metalnessTexture->mapping = $mapping;
+            $scene->registerTexture($metalnessTexture);
+            $material->setMetallic($metalnessTexture);
+
+            $roughnessTextureSavaPath = $downloadDir.'roughness'.basename($textureUrl);
+            $roughnessTexture = new Imagick($textureSavaPath);
+            $roughnessTexture->separateImageChannel(Imagick::CHANNEL_BLUE);
+            $roughnessTexture->writeImage($roughnessTextureSavaPath);
             $roughnessTexture = new ImageMap(
-                ['file' => $textureSavaPath]
+                ['file' => $roughnessTextureSavaPath]
             );
             $roughnessTexture->mapping = $mapping;
             $scene->registerTexture($roughnessTexture);
@@ -106,7 +115,7 @@ class MatHelper{
             $material->setBumptex($normalTexture);
         }
 
-        //TODO： 更多通道贴图处理，待后续完善
+        //TODO： 更多贴图通道处理，待后续完善
 
         return $material;
     }