-Change: Added Use Normal texture option to PBR material

Author: AEspinosaDev

include/engine/core/materials/physically_based.h

@@ -39,12 +39,13 @@ class PhysicallyBasedMaterial : public IMaterial
     float m_emisionWeight     = 1.0f; // Weight between parameter and emi texture
     float m_emissionIntensity = 1.0f;
 
-    //Whether to if casts SSR
+    // Whether to if casts SSR
     bool m_isReflective = false;
 
     // Query
     bool m_hasAlbedoTexture    = false;
     bool m_hasNormalTexture    = false;
+    bool m_useNormalTexture    = true;
     bool m_hasRoughnessTexture = false;
     bool m_hasMetallicTexture  = false;
     bool m_hasAOTexture        = false;
@@ -286,6 +287,12 @@ class PhysicallyBasedMaterial : public IMaterial
     inline MaskType get_mask_type() const {
         return (MaskType)m_maskType;
     }
+    inline void use_normal_texture(bool op) {
+        m_useNormalTexture = op;
+    }
+    inline bool use_normal_texture() const {
+        return m_useNormalTexture;
+    }
 };
 } // namespace Core
 VULKAN_ENGINE_NAMESPACE_END

src/core/materials/physically_based.cpp

@@ -9,7 +9,7 @@ Graphics::MaterialUniforms PhysicallyBasedMaterial::get_uniforms() const {
     uniforms.dataSlot2 = {m_tileUV.x, m_tileUV.y, m_settings.alphaTest, m_settings.blending};
     uniforms.dataSlot3 = {m_albedoWeight, m_metalness, m_metalnessWeight, m_roughness};
     uniforms.dataSlot4 = {m_roughnessWeight, m_occlusion, m_occlusionWeight, m_hasAlbedoTexture};
-    uniforms.dataSlot5 = {m_hasNormalTexture, m_hasRoughnessTexture, m_hasMetallicTexture, m_hasAOTexture};
+    uniforms.dataSlot5 = {m_hasNormalTexture && m_useNormalTexture, m_hasRoughnessTexture, m_hasMetallicTexture, m_hasAOTexture};
     uniforms.dataSlot6 = {m_hasMaskTexture, m_maskType, m_opacityWeight, m_hasEmissiveTexture};
     uniforms.dataSlot7 = {m_emissionColor, m_emisionWeight};
     uniforms.dataSlot8 = Vec4{m_emissionIntensity, m_isReflective, 0.0f, 0.0f}; // W = Material ID

src/tools/widgets.cpp

@@ -518,6 +518,11 @@ void ObjectExplorerWidget::render() {
                 if (mat->get_normal_texture())
                 {
                     ImGui::Image(get_image(mat->get_normal_texture())->GUIReadHandle, texSize);
+                    bool useNormal = mat->use_normal_texture();
+                    if (ImGui::Checkbox("Use Normal Texture", &useNormal))
+                    {
+                        mat->use_normal_texture(useNormal);
+                    }
                 }
                 ImGui::Spacing();