From d68242d59d52f00571b45da2339f94df71414a8a Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Sat, 18 Mar 2023 17:36:52 +0300
Subject: [PATCH] Support material texture in gltf parser

---
 libs/gfx/include/psemek/gfx/gltf_parser.hpp | 1 +
 libs/gfx/source/gltf_parser.cpp             | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/libs/gfx/include/psemek/gfx/gltf_parser.hpp b/libs/gfx/include/psemek/gfx/gltf_parser.hpp
index 976c871a..9c5b8008 100644
--- a/libs/gfx/include/psemek/gfx/gltf_parser.hpp
+++ b/libs/gfx/include/psemek/gfx/gltf_parser.hpp
@@ -48,6 +48,7 @@ namespace psemek::gfx
 			std::optional<color_4f> albedo;
 			std::optional<std::size_t> texture;
 			std::optional<color_3f> emission;
+			std::optional<std::size_t> material_texture;
 		};
 
 		struct texture
diff --git a/libs/gfx/source/gltf_parser.cpp b/libs/gfx/source/gltf_parser.cpp
index 73b40b52..b8c61797 100644
--- a/libs/gfx/source/gltf_parser.cpp
+++ b/libs/gfx/source/gltf_parser.cpp
@@ -170,6 +170,11 @@ namespace psemek::gfx
 				target.texture = document["textures"].GetArray()[pbr["baseColorTexture"]["index"].GetUint64()]["source"].GetInt64();
 			}
 
+			if (pbr.HasMember("metallicRoughnessTexture"))
+			{
+				target.material_texture = document["textures"].GetArray()[pbr["metallicRoughnessTexture"]["index"].GetUint64()]["source"].GetInt64();
+			}
+
 			if (material.HasMember("emissiveFactor"))
 			{
 				auto const & emission = material["emissiveFactor"].GetArray();