From a0fa214b6b198a4054ddf1d0d4e908c7a9654682 Mon Sep 17 00:00:00 2001
From: J3oss <youssef.assem.mohamed@gmail.com>
Date: Sun, 27 Jun 2021 01:23:28 +0200
Subject: [PATCH] added normal map

---
 assets/shaders/default.frag |  2 ++
 assets/shaders/default.vert | 12 ++++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/assets/shaders/default.frag b/assets/shaders/default.frag
index c7a6d6f..3a82fbb 100755
--- a/assets/shaders/default.frag
+++ b/assets/shaders/default.frag
@@ -5,6 +5,8 @@ struct Material {
   vec4 baseColor;
   uint albedoTexture;
 
+  uint normalTexture;
+
   float metallicFactor;
   float roughnessFactor;
   uint metallicRoughnessTexture;
diff --git a/assets/shaders/default.vert b/assets/shaders/default.vert
index 41ae5c5..5b29b95 100755
--- a/assets/shaders/default.vert
+++ b/assets/shaders/default.vert
@@ -5,6 +5,8 @@ struct Material {
   vec4 baseColor;
   uint albedoTexture;
 
+  uint normalTexture;
+
   float metallicFactor;
   float roughnessFactor;
   uint metallicRoughnessTexture;
@@ -72,8 +74,14 @@ void main()
   uint index = IndexBuffers[ PushConstants.indexBufferIndex ].indices[gl_VertexIndex];
   Vertex vertex = VertexBuffers[ PushConstants.vertexBufferIndex ].vertices[ index ];
 
-  color = texture(texSampler[material.albedoTexture],vertex.uv[0]).xyz;
+  color = texture(texSampler[material.albedoTexture], vertex.uv[0]).xyz;
+
+  if(material.normalTexture != 0) {
+    normal = texture(texSampler[material.normalTexture], vertex.uv[0]).xyz;
+  }
+  else {
+    normal = vertex.normal.xyz;
+  }
 
-  normal = vertex.normal.xyz;
   gl_Position = Camera.projection * Camera.view * PushConstants.render_matrix * vec4(vertex.position.xyz, 1.0);
 }