Merge branch 'fastgltf'

assets/shaders/color3d.glsl

@@ -2,10 +2,8 @@
 #version 450 core
 
 layout(location = 0) in vec3 a_Position;
-layout(location = 1) in vec4 a_Color;
-layout(location = 2) in vec3 a_Normal;
-layout(location = 3) in vec2 a_TexCoord;
-layout(location = 4) in int a_EntityID;
+layout(location = 1) in vec3 a_Normal;
+layout(location = 2) in vec2 a_TexCoord;
 
 layout(std140, binding = 0) uniform Camera
 {
@@ -20,25 +18,20 @@ layout(std140, binding = 1) uniform Transform
 
 struct VertexOutput
 {
-	vec4 Color;
 	vec2 TexCoord;
     vec3 Normal;
     vec3 ViewPos;
 };
 
 layout (location = 0) out VertexOutput Output;
-layout (location = 4) out flat int v_EntityID;
 layout (location = 5) out vec4 v_Pos;
 
 void main()
 {
-	Output.Color = a_Color;
 	Output.TexCoord = a_TexCoord;
     Output.Normal = mat3(transpose(inverse(u_Transform))) * a_Normal;
     Output.ViewPos = u_ViewPosition;
 
-	v_EntityID = a_EntityID;
-
     v_Pos = u_Transform * vec4(a_Position, 1.0);
     gl_Position = u_ViewProjection * v_Pos;
 }
@@ -49,9 +42,22 @@ void main()
 layout (location = 0) out vec4 color;
 layout (location = 1) out int color2;
 
+layout (std140, binding = 2) uniform Material
+{
+    vec4 u_Albedo;
+    float u_Roughness;
+    float u_Metallic;
+    float u_AmbientStrength;
+    float u_SpecularStrength;
+};
+
+layout(std140, binding = 3) uniform EditorID
+{
+    int u_EntityID;
+};
+
 struct VertexOutput
 {
-	vec4 Color;
 	vec2 TexCoord;
     vec3 Normal;
     vec3 ViewPos;
@@ -67,8 +73,7 @@ void main()
     vec3 lightColor = vec3(1.0f, 1.0f, 1.0f);
 
     // Ambiant lighting
-    float ambientStrength = 0.8;
-    vec3 ambient = ambientStrength * lightColor;
+    vec3 ambient = lightColor * u_AmbientStrength;
 
     // Diffuse lighting
     vec3 norm = normalize(Input.Normal);
@@ -78,16 +83,19 @@ void main()
     vec3 diffuse = diff * lightColor;
 
     // Specular highlight
-    float specularStrength = 0.5;
     vec3 viewDir = normalize(Input.ViewPos - v_Pos.xyz); // .xyz here too
     vec3 reflectDir = reflect(-lightDir, norm);
 
-    float spec = pow(max(dot(viewDir, reflectDir), 0.0), 32);
-    vec3 specular = specularStrength * spec * lightColor;
+    float shininess = mix(2.0, 256.0, 1.0 - u_Roughness);
+    float spec = pow(max(dot(viewDir, reflectDir), 0.0), shininess);
+    vec3 specularColor = mix(vec3(1.0), u_Albedo.rgb, u_Metallic);
+    vec3 specular = u_SpecularStrength * spec * lightColor * specularColor;
 
-    vec3 result = (ambient + diffuse + specular) * Input.Color.rgb; // objectColor → Input.Color.rgb
+    // Total
+    //vec3 result = (ambient + diffuse + specular) * Input.Color.rgb; // objectColor → Input.Color.rgb
+    vec3 result = (ambient + diffuse + specular) * u_Albedo.rgb; // objectColor → Input.Color.rgb
 
     // Output
-    color = vec4(result, 1.0); // vec3 → vec4
-	color2 = v_EntityID;
+    color = vec4(result, u_Albedo.w); // vec3 → vec4
+	color2 = u_EntityID;
 }

conanfile.txt

@@ -4,6 +4,7 @@ spdlog/1.16.0
 entt/3.16.0
 yaml-cpp/0.8.0
 joltphysics/5.2.0
+fastgltf/0.9.0
 
 [generators]
 CMakeDeps

editor/include/editor.hpp

@@ -1,9 +1,12 @@
 #ifndef EDITOR_HPP
 #define EDITOR_HPP
 
-#include <X11/X.h>
 #include <open_engine.hpp>
 
+#include "open_engine/fastgltf.hpp"
+#include "open_engine/logging.hpp"
+#include "open_engine/ref_scope.hpp"
+#include "open_engine/renderer/model3d.hpp"
 #include "open_engine/renderer/renderer3d.hpp"
 #include "open_engine/scene/components.hpp"
 #include "panels/content_browser.hpp"
@@ -129,6 +132,23 @@ namespace OpenEngine {
                 auto& mc2 = cube2.AddComponent<MeshComponent>(mesh2);
                 mc2.primitive_type = PrimitiveType::Cube;
 
+                // ============================================================
+
+                Entity cube3 = scene->CreateEntity("glb");
+                Entity cube4 = scene->CreateEntity("glb2");
+                Entity cube5 = scene->CreateEntity("glb2");
+                cube3.AddComponent<TransformComponent>();
+                cube4.AddComponent<TransformComponent>();
+                cube5.AddComponent<TransformComponent>();
+
+                Ref<Model3D> model = Model3D::Create("./assets/models/cubes.glb");
+                Ref<Model3D> model2 = Model3D::Create("./assets/models/cube_legs.glb");
+                Ref<Model3D> monkey = Model3D::Create("./assets/models/monkey.glb");
+
+                cube3.AddComponent<ModelComponent>(model);
+                cube3.AddComponent<ModelComponent>(model2);
+                cube4.AddComponent<ModelComponent>(monkey);
+
                 /*
                 auto view = scene->GetRegistry().view<TagComponent>();
 

editor/include/editor_component.hpp

@@ -22,6 +22,7 @@ namespace OpenEngine {
     void SphereShapeOnImGuiRender(entt::registry& registry, entt::entity entity);
     void BoxShapeOnImGuiRender(entt::registry& registry, entt::entity entity);
     void PlaneShapeOnImGuiRender(entt::registry& registry, entt::entity entity);
+    void ModelOnImGuiRender(entt::registry& registry, entt::entity entity);
 }
 
 #endif // EDITOR_COMPONENT_HPP

editor/src/editor_component.cpp

@@ -2,6 +2,7 @@
 #include "open_engine/renderer/renderer3d.hpp"
 #include "open_engine/scene/components.hpp"
 #include <Jolt/Physics/Body/MotionType.h>
+#include <cstdint>
 #include <editor_component.hpp>
 #include <entt/entity/fwd.hpp>
 #include <glm/gtc/type_ptr.hpp>
@@ -295,4 +296,33 @@ namespace OpenEngine {
                 "%.2f",
                 ImGuiSliderFlags_AlwaysClamp);
     }
+
+    void ModelOnImGuiRender(entt::registry& registry, entt::entity entity)
+    {
+        auto& model_comp = registry.get<ModelComponent>(entity);
+
+        bool opened = ImGui::TreeNodeEx(
+                (void*)(intptr_t)entity,
+                ImGuiTreeNodeFlags_None,
+                "Meshes",
+                nullptr
+                );
+
+        if (opened) {
+            unsigned int i = 0;
+            for (auto& mesh : model_comp.model->GetMeshes())
+                ImGui::Text("Mesh: %i", i++);
+
+
+            ImGui::PushStyleColor(ImGuiCol_ChildBg, {1, 1, 1, 1});
+            if (ImGui::BeginChild("Material list")) {
+                for (auto& mesh : model_comp.model->GetMeshes())
+                    ImGui::Text("Material: %s", mesh.material.name.c_str());
+                ImGui::EndChild();
+            }
+            ImGui::PopStyleColor();
+
+            ImGui::TreePop();
+        }
+    }
 }

editor/src/panels/scene_hierarchy.cpp

@@ -28,6 +28,7 @@ namespace OpenEngine {
         RegisterDrawer<SphereShapeComponent>("Sphere Shape", &SphereShapeOnImGuiRender);
         RegisterDrawer<BoxShapeComponent>("Box Shape", &BoxShapeOnImGuiRender);
         RegisterDrawer<PlaneShapeComponent>("Plane Shape", &PlaneShapeOnImGuiRender);
+        RegisterDrawer<ModelComponent>("Model", &ModelOnImGuiRender);
 
         scene = context;
         selected_context = {};
@@ -81,6 +82,11 @@ namespace OpenEngine {
                 selected_context.AddComponent<PlaneShapeComponent>();
                 ImGui::CloseCurrentPopup();
             }
+        if (!selected_context.HasComponent<ModelComponent>())
+            if (ImGui::MenuItem("Model")) {
+                selected_context.AddComponent<ModelComponent>();
+                ImGui::CloseCurrentPopup();
+            }
     }
 
     void EntityPopup(Ref<Scene>& scene)

imgui.ini

@@ -1,6 +1,6 @@
 [Window][WindowOverViewport_11111111]
 Pos=0,24
-Size=2560,1371
+Size=1272,1363
 Collapsed=0
 
 [Window][Debug##Default]
@@ -10,31 +10,31 @@ Collapsed=0
 
 [Window][Statistics]
 Pos=0,24
-Size=224,439
+Size=409,437
 Collapsed=0
 DockId=0x00000003,0
 
 [Window][Properties]
-Pos=2110,24
-Size=450,810
+Pos=822,24
+Size=450,805
 Collapsed=0
 DockId=0x00000007,0
 
 [Window][Viewport]
-Pos=226,61
-Size=1882,964
+Pos=411,61
+Size=409,956
 Collapsed=0
 DockId=0x00000012,0
 
 [Window][Dear ImGui Demo]
-Pos=2110,836
-Size=450,559
+Pos=822,831
+Size=450,556
 Collapsed=0
 DockId=0x00000008,0
 
 [Window][Scene]
-Pos=0,465
-Size=224,930
+Pos=0,463
+Size=409,924
 Collapsed=0
 DockId=0x00000004,0
 
@@ -143,8 +143,8 @@ Collapsed=0
 DockId=0x00000012,1
 
 [Window][Assets]
-Pos=226,1027
-Size=1882,368
+Pos=411,1019
+Size=409,368
 Collapsed=0
 DockId=0x0000000C,0
 
@@ -155,18 +155,18 @@ Collapsed=0
 DockId=0x0000000F,0
 
 [Window][##play_state_bar]
-Pos=226,24
-Size=1882,35
+Pos=411,24
+Size=409,35
 Collapsed=0
 DockId=0x00000011,0
 
 [Docking][Data]
-DockSpace               ID=0x08BD597D Window=0x1BBC0F80 Pos=0,24 Size=2560,1371 Split=X
+DockSpace               ID=0x08BD597D Window=0x1BBC0F80 Pos=0,24 Size=1272,1363 Split=X
   DockNode              ID=0x00000005 Parent=0x08BD597D SizeRef=820,1386 Split=X
-    DockNode            ID=0x00000001 Parent=0x00000005 SizeRef=224,1386 Split=Y Selected=0xE601B12F
+    DockNode            ID=0x00000001 Parent=0x00000005 SizeRef=409,1386 Split=Y Selected=0xE601B12F
       DockNode          ID=0x00000003 Parent=0x00000001 SizeRef=255,417 Selected=0x553E127E
       DockNode          ID=0x00000004 Parent=0x00000001 SizeRef=255,883 Selected=0xE601B12F
-    DockNode            ID=0x00000002 Parent=0x00000005 SizeRef=594,1386 Split=Y Selected=0xC450F867
+    DockNode            ID=0x00000002 Parent=0x00000005 SizeRef=409,1386 Split=Y Selected=0xC450F867
       DockNode          ID=0x00000009 Parent=0x00000002 SizeRef=483,784 Split=Y Selected=0xC450F867
         DockNode        ID=0x0000000B Parent=0x00000009 SizeRef=409,932 Split=X Selected=0xC450F867
           DockNode      ID=0x0000000D Parent=0x0000000B SizeRef=1080,993 Split=Y Selected=0xC450F867

open_engine/CMakeLists.txt

@@ -14,6 +14,7 @@ find_package(imgui REQUIRED)
 find_package(EnTT REQUIRED)
 find_package(yaml-cpp REQUIRED)
 find_package(Jolt REQUIRED)
+find_package(fastgltf REQUIRED)
 
 file(GLOB_RECURSE SRC_FILES "src/*.cpp")
 file(GLOB IMGUIZMO_SRC_FILES "${CMAKE_SOURCE_DIR}/vendor/ImGuizmo/*.cpp")
@@ -63,6 +64,7 @@ target_link_libraries(${PROJECT_EXECUTABLE_NAME} PUBLIC
     spirv-cross-glsl
     spirv-cross-reflect
     Jolt::Jolt
+    fastgltf::fastgltf
 )
 
 #target_link_directories(${PROJECT_EXECUTABLE_NAME} PRIVATE

open_engine/include/open_engine/fastgltf.hpp

@@ -0,0 +1,13 @@
+#ifndef FASTGLTF_HPP
+#define FASTGLTF_HPP
+
+#include "renderer/renderer3d.hpp"
+#include "open_engine/ref_scope.hpp"
+
+namespace OpenEngine {
+
+    Ref<Mesh> TestGLTF();
+
+}
+
+#endif // FASTGLTF_HPP

open_engine/include/open_engine/gltf/gltf_model3d.hpp

@@ -0,0 +1,38 @@
+#ifndef GLTF_MODEL3D_HPP
+#define GLTF_MODEL3D_HPP
+
+#include "open_engine/renderer/model3d.hpp"
+
+#include <fastgltf/types.hpp>
+#include <vector>
+#include <cstddef>
+
+namespace OpenEngine {
+
+    class GLTFModel3D : public Model3D
+    {
+        public:
+            GLTFModel3D(const char* path);
+
+            void loadPrimitive(fastgltf::Asset& asset,
+                    fastgltf::Primitive& primitive,
+                    Mesh& out);
+            virtual const Mesh& GetMesh(int index) const override;
+            virtual const std::vector<Mesh>& GetMeshes() const override;
+
+            virtual size_t GetMeshCount() const override { return meshes.size(); };
+
+            virtual std::vector<Mesh>::iterator begin() override { return meshes.begin(); };
+            virtual std::vector<Mesh>::iterator end() override { return meshes.end(); };
+
+            virtual std::vector<Mesh>::const_iterator begin() const override { return meshes.cbegin(); };
+            virtual std::vector<Mesh>::const_iterator end() const override { return meshes.end(); };
+
+        private:
+            std::string name;
+            std::vector<Mesh> meshes;
+    };
+
+}
+
+#endif // GLTF_MODEL3D_HPP

open_engine/include/open_engine/renderer/model3d.hpp

@@ -0,0 +1,69 @@
+#ifndef MODEL3D_HPP
+#define MODEL3D_HPP
+
+#include "open_engine/core/uuid.hpp"
+#include "open_engine/renderer/vertex_array.hpp"
+#include <cstddef>
+#include <cstdint>
+#include <glm/glm.hpp>
+#include <vector>
+
+namespace OpenEngine {
+
+    struct Material
+    {
+        glm::vec4 albedo = { 1.0f, 0.0f, 0.8f, 1.0f };
+        float roughness = 1.0f;
+        float metallic = 1.0f;
+        float ambient_strength = 1.0f;
+        float specular_strength = 1.0f;
+        std::string name = "un-named material";
+    };
+
+    struct MeshVertex
+    {
+        glm::vec3 position;
+        glm::vec3 normal;
+        glm::vec2 text_coords;
+    };
+
+    struct Mesh
+    {
+        UUID uuid;
+
+        Material material;
+
+        Ref<VertexArray> vertex_array;
+        Ref<VertexBuffer> vertex_buffer;
+        Ref<IndexBuffer> index_buffer;
+
+        // TODO: Make them a ptr or something
+        std::vector<MeshVertex> vertices;
+        std::vector<uint32_t> indices;
+    };
+
+    // TODO: Model3D.Instanciate();
+    // Or Model3D.GetVertices() {return iterateaccessorwithindex bla bla bla}
+    // What data should Model3D hold in the end if it is not a renderable object?
+    class Model3D
+    {
+        public:
+            virtual ~Model3D() = default;
+
+            static Ref<Model3D> Create(const char* path);
+
+            virtual const Mesh& GetMesh(int index) const = 0;
+            virtual const std::vector<Mesh>& GetMeshes() const = 0;
+
+            virtual size_t GetMeshCount() const = 0;
+
+            virtual std::vector<Mesh>::iterator begin() = 0;
+            virtual std::vector<Mesh>::iterator end() = 0;
+
+            virtual std::vector<Mesh>::const_iterator begin() const = 0;
+            virtual std::vector<Mesh>::const_iterator end() const = 0;
+    };
+
+}
+
+#endif // MODEL3D_HPP

open_engine/include/open_engine/renderer/renderer3d.hpp

@@ -2,9 +2,8 @@
 #define RENDERER3D_HPP
 
 #include "open_engine/renderer/editor_camera.hpp"
-#include "open_engine/renderer/vertex_array.hpp"
-#include "open_engine/renderer/buffer.hpp"
 #include "open_engine/scene/scene_camera.hpp"
+#include "open_engine/renderer/model3d.hpp"
 #include <cstdint>
 
 namespace OpenEngine {
@@ -18,39 +17,12 @@ namespace OpenEngine {
         Cube
     };
 
-    struct MeshVertex
-    {
-        glm::vec3 position;
-        glm::vec4 color;
-        glm::vec3 normal;
-        glm::vec2 text_coords;
-        uint32_t id = -1;
-    };
-
-    struct Material
-    {
-        glm::vec4 albedo = { 1.0f, 1.0f, 1.0f, 1.0f };
-        float roughness = 1.0f;
-        float metallic = 1.0f;
-        float ambient_strength = 1.0f;
-        float specular_strength = 1.0f;
-    };
-
-    struct Mesh
-    {
-        Ref<VertexArray> vertex_array;
-        Ref<VertexBuffer> vertex_buffer;
-        Ref<IndexBuffer> index_buffer;
-
-        // TODO: Make them a ptr or something
-        std::vector<MeshVertex> vertices;
-        std::vector<uint32_t> indices;
-    };
-
     Ref<Mesh> CreateMesh(const std::vector<MeshVertex>& vertices,
             const std::vector<uint32_t>& indices);
+    void PopulateMesh(Mesh& mesh);
     Ref<Mesh> CreateCube(uint32_t id = -1);
     Ref<Mesh> CreateQuad(uint32_t id = -1, bool back_face = false);
+
     // ==================================================
 
     class Renderer3D
@@ -65,6 +37,12 @@ namespace OpenEngine {
 
             static void DrawMesh(const Ref<Mesh>& mesh, Material& material,
                     const glm::mat4& transform);
+            static void DrawMesh(const Ref<Mesh>& mesh, Material& material,
+                    const glm::mat4& transform,
+                    uint32_t entity_id);
+            static void DrawModel(const Ref<Model3D>& model,
+                    const glm::mat4& transform,
+                    uint32_t entity_id);
     };
 }
 

open_engine/include/open_engine/scene/components.hpp

@@ -7,6 +7,8 @@
 #include "open_engine/renderer/renderer3d.hpp"
 #include "open_engine/physics.hpp"
 #include "open_engine/core/uuid.hpp"
+#include "open_engine/ref_scope.hpp"
+#include "open_engine/renderer/model3d.hpp"
 
 #include <Jolt/Physics/Body/BodyCreationSettings.h>
 #include <Jolt/Physics/Body/BodyInterface.h>
@@ -147,16 +149,36 @@ namespace OpenEngine {
     struct BoxShapeComponent
     {
         glm::vec3 size = { 1.0f, 1.0f, 1.0f };
+
+        BoxShapeComponent() = default;
+        BoxShapeComponent(const BoxShapeComponent&) = default;
     };
 
     struct SphereShapeComponent
     {
         float radius = 1.0f;
+
+        SphereShapeComponent() = default;
+        SphereShapeComponent(const SphereShapeComponent&) = default;
     };
 
     struct PlaneShapeComponent
     {
         float extent = 1.0f;
+
+        PlaneShapeComponent() = default;
+        PlaneShapeComponent(const PlaneShapeComponent&) = default;
+    };
+
+    struct ModelComponent
+    {
+        Ref<Model3D> model;
+
+        ModelComponent() = default;
+        ModelComponent(const ModelComponent&) = default;
+        ModelComponent(Ref<Model3D>& model)
+            : model(model)
+        {}
     };
 }
 

open_engine/src/open_engine/fastgltf.cpp

@@ -0,0 +1,86 @@
+#include <pch.hpp>
+
+#include "logging.hpp"
+#include <fastgltf.hpp>
+#include "ref_scope.hpp"
+
+#include <cstddef>
+#include <cstdint>
+#include <glm/fwd.hpp>
+#include <fastgltf/core.hpp>
+#include <fastgltf/types.hpp>
+#include <fastgltf/tools.hpp>
+#include <fastgltf/glm_element_traits.hpp>
+
+#include <vector>
+
+namespace OpenEngine {
+
+    void loadPrimitive(fastgltf::Asset& asset,
+            fastgltf::Primitive& primitive,
+            Mesh& out)
+    {
+        if (primitive.indicesAccessor.has_value()) {
+            auto& accessor = asset.accessors[primitive.indicesAccessor.value()];
+            out.indices.resize(accessor.count);
+
+            fastgltf::iterateAccessorWithIndex<uint32_t>(asset, accessor,
+                    [&](uint32_t index, size_t i) {
+                        out.indices[i] = index;
+                    });
+        }
+
+        {
+            auto* position_iterator = primitive.findAttribute("POSITION");
+            auto& accessor = asset.accessors[position_iterator->accessorIndex];
+            out.vertices.resize(accessor.count);
+            
+            fastgltf::iterateAccessorWithIndex<glm::vec3>(asset, accessor,
+                    [&](glm::vec3 pos, size_t i) {
+                        out.vertices[i].position = pos;
+                    });
+        }
+
+        if (auto* normal_iterator = primitive.findAttribute("NORMAL");
+                normal_iterator != primitive.attributes.end()) {
+            auto& accessor = asset.accessors[normal_iterator->accessorIndex];
+
+            fastgltf::iterateAccessorWithIndex<glm::vec3>(asset, accessor,
+                    [&](glm::vec3 norm, size_t i) {
+                        out.vertices[i].normal = norm;
+                    });
+        }
+
+        {
+            if (primitive.materialIndex.has_value()) {
+                auto& material = asset.materials[primitive.materialIndex.value()];
+                auto& pbr = material.pbrData;
+
+                auto& c = pbr.baseColorFactor;
+            }
+        }
+    }
+
+    Ref<Mesh> TestGLTF()
+    {
+        fastgltf::Parser parser;
+        Ref<Mesh> new_mesh = CreateRef<Mesh>();
+
+        auto data = fastgltf::GltfDataBuffer::FromPath("assets/models/cube.glb");
+        if (data.error() != fastgltf::Error::None)
+            OE_CORE_ERROR("Could not parse model");
+
+        auto asset = parser.loadGltfBinary(data.get(), ".",
+                fastgltf::Options::LoadExternalBuffers
+                );
+        if (asset.error() != fastgltf::Error::None)
+            OE_CORE_ERROR("Could not optain asset");
+
+        for (auto& mesh : asset->meshes)
+            for (auto& primitive : mesh.primitives)
+                loadPrimitive(asset.get(), primitive, *new_mesh);
+
+        return new_mesh;
+    }
+
+}

open_engine/src/open_engine/gltf/gltf_model3d.cpp

@@ -0,0 +1,137 @@
+#include "logging.hpp"
+#include <pch.hpp>
+
+#include <gltf/gltf_model3d.hpp>
+
+#include <fastgltf/core.hpp>
+#include <fastgltf/types.hpp>
+#include <fastgltf/tools.hpp>
+#include <fastgltf/glm_element_traits.hpp>
+
+namespace OpenEngine {
+
+    void PopulateMesh(Mesh& mesh)
+    {
+        mesh.vertex_array = VertexArray::Create();
+
+        mesh.vertex_buffer = VertexBuffer::Create(mesh.vertices.size() * sizeof(MeshVertex));
+        mesh.vertex_buffer->SetData(mesh.vertices.data(), mesh.vertices.size() * sizeof(MeshVertex));
+
+        BufferLayout layout = {
+            { ShaderDataType::Float3, "a_Position" },
+            { ShaderDataType::Float3, "a_Normal" },
+            { ShaderDataType::Float2, "a_TexCoord" }
+        };
+
+        mesh.vertex_buffer->SetLayout(layout);
+        mesh.vertex_array->AddVertexBuffer(mesh.vertex_buffer);
+
+        mesh.index_buffer = IndexBuffer::Create(mesh.indices.data(), mesh.indices.size());
+        mesh.vertex_array->SetIndexBuffer(mesh.index_buffer);
+    }
+
+    Ref<Mesh> CreateMesh(const std::vector<MeshVertex>& vertices,
+            const std::vector<uint32_t>& indices)
+    {
+        Ref<Mesh> mesh = CreateRef<Mesh>();
+
+        mesh->vertices = vertices;
+        mesh->indices = indices;
+
+        PopulateMesh(*mesh);
+
+        return mesh;
+    }
+
+    void GLTFModel3D::loadPrimitive(fastgltf::Asset& asset,
+            fastgltf::Primitive& primitive,
+            Mesh& out)
+    {
+        if (primitive.indicesAccessor.has_value()) {
+            auto& accessor = asset.accessors[primitive.indicesAccessor.value()];
+            out.indices.resize(accessor.count);
+
+            fastgltf::iterateAccessorWithIndex<uint32_t>(asset, accessor,
+                    [&](uint32_t index, size_t i) {
+                    out.indices[i] = index;
+                    });
+        }
+
+        {
+            auto* position_iterator = primitive.findAttribute("POSITION");
+            auto& accessor = asset.accessors[position_iterator->accessorIndex];
+            out.vertices.resize(accessor.count);
+
+            fastgltf::iterateAccessorWithIndex<glm::vec3>(asset, accessor,
+                    [&](glm::vec3 pos, size_t i) {
+                    out.vertices[i].position = pos;
+                    });
+        }
+
+        if (auto* normal_iterator = primitive.findAttribute("NORMAL");
+                normal_iterator != primitive.attributes.end()) {
+            auto& accessor = asset.accessors[normal_iterator->accessorIndex];
+
+            fastgltf::iterateAccessorWithIndex<glm::vec3>(asset, accessor,
+                    [&](glm::vec3 norm, size_t i) {
+                    out.vertices[i].normal = norm;
+                    });
+        }
+
+        {
+            if (primitive.materialIndex.has_value()) {
+                auto& material = asset.materials[primitive.materialIndex.value()];
+                auto& pbr = material.pbrData;
+
+                auto& color = pbr.baseColorFactor;
+                auto& roughness = pbr.roughnessFactor;
+                auto& metallic = pbr.metallicFactor;
+
+                out.material.name = material.name;
+                out.material.albedo = glm::vec4(color[0], color[1], color[2], color[3]);
+                out.material.roughness = roughness;
+                out.material.metallic = metallic;
+            }
+        }
+    }
+
+    GLTFModel3D::GLTFModel3D(const char* path)
+    {
+        fastgltf::Parser parser;
+
+        auto data = fastgltf::GltfDataBuffer::FromPath(path);
+        if (data.error() != fastgltf::Error::None)
+            OE_CORE_ERROR("Could not parse model");
+
+        auto asset = parser.loadGltfBinary(data.get(), ".",
+                fastgltf::Options::LoadExternalBuffers
+                );
+        if (asset.error() != fastgltf::Error::None)
+            OE_CORE_ERROR("Could not optain asset");
+
+
+        for (auto& mesh : asset->meshes) {
+            name = mesh.name;
+
+            for (auto& primitive : mesh.primitives) {
+                Mesh prim_mesh;
+
+                loadPrimitive(asset.get(), primitive, prim_mesh);
+                PopulateMesh(prim_mesh);
+
+                meshes.emplace_back(prim_mesh);
+            }
+        }
+    };
+
+    const Mesh& GLTFModel3D::GetMesh(int index) const
+    {
+        return meshes[index];
+    }
+
+    const std::vector<Mesh>& GLTFModel3D::GetMeshes() const
+    {
+        return meshes;
+    }
+
+}

open_engine/src/open_engine/renderer/model3d.cpp

@@ -0,0 +1,19 @@
+#include <pch.hpp>
+
+#include <renderer/model3d.hpp>
+
+#include <gltf/gltf_model3d.hpp>
+#include <instrumentor.hpp>
+#include <ref_scope.hpp>
+
+
+namespace OpenEngine {
+
+    Ref<Model3D> Model3D::Create(const char* path)
+    {
+        OE_PROFILE_FUNCTION();
+
+        return CreateRef<GLTFModel3D>(path);
+    }
+
+}

open_engine/src/open_engine/renderer/renderer3d.cpp

@@ -23,33 +23,6 @@
 namespace OpenEngine {
 
     // SHOULD BE MOVED ==================================
-    Ref<Mesh> CreateMesh(const std::vector<MeshVertex>& vertices,
-            const std::vector<uint32_t>& indices)
-    {
-        Ref<Mesh> mesh = CreateRef<Mesh>();
-        mesh->vertices = vertices;
-        mesh->indices = indices;
-
-        mesh->vertex_array = VertexArray::Create();
-
-        mesh->vertex_buffer = VertexBuffer::Create(vertices.size() * sizeof(MeshVertex));
-        mesh->vertex_buffer->SetData(vertices.data(), vertices.size() * sizeof(MeshVertex));
-
-        BufferLayout layout = {
-            { ShaderDataType::Float3, "a_Position" },
-            { ShaderDataType::Float4, "a_Color" },
-            { ShaderDataType::Float3, "a_Normal" },
-            { ShaderDataType::Float2, "a_TexCoord" },
-            { ShaderDataType::Int, "a_EntityID"}
-        };
-        mesh->vertex_buffer->SetLayout(layout);
-        mesh->vertex_array->AddVertexBuffer(mesh->vertex_buffer);
-
-        mesh->index_buffer = IndexBuffer::Create(indices.data(), indices.size());
-        mesh->vertex_array->SetIndexBuffer(mesh->index_buffer);
-
-        return mesh;
-    }
 
     Ref<Mesh> CreateQuad(uint32_t id, bool back_face)
     {
@@ -61,16 +34,16 @@ namespace OpenEngine {
         if (back_face) {
             vertices = {
                 // Front face (normal 0, 0, 1)
-                {{-0.5f, -0.5f,  0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {0,0}, id},
-                {{-0.5f,  0.5f,  0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {0,1}, id},
-                {{ 0.5f,  0.5f,  0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {1,1}, id},
-                {{ 0.5f, -0.5f,  0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {1,0}, id},
+                {{-0.5f, -0.5f,  0.0f}, {0,0,1}, {0,0}},
+                {{-0.5f,  0.5f,  0.0f}, {0,0,1}, {0,1}},
+                {{ 0.5f,  0.5f,  0.0f}, {0,0,1}, {1,1}},
+                {{ 0.5f, -0.5f,  0.0f}, {0,0,1}, {1,0}},
 
                 // Back face (normal 0, 0, -1)
-                {{-0.5f, -0.5f, -0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,-1}, {0,0}, id},
-                {{-0.5f,  0.5f, -0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,-1}, {0,1}, id},
-                {{ 0.5f,  0.5f, -0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,-1}, {1,1}, id},
-                {{ 0.5f, -0.5f, -0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,-1}, {1,0}, id}
+                {{-0.5f, -0.5f, -0.0f}, {0,0,-1}, {0,0}},
+                {{-0.5f,  0.5f, -0.0f}, {0,0,-1}, {0,1}},
+                {{ 0.5f,  0.5f, -0.0f}, {0,0,-1}, {1,1}},
+                {{ 0.5f, -0.5f, -0.0f}, {0,0,-1}, {1,0}}
             };
 
             indices = {
@@ -82,10 +55,10 @@ namespace OpenEngine {
         } else {
             vertices = {
                 // Front face (normal 0, 0, 1)
-                {{-0.5f, -0.5f,  0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {0,0}, id},
-                {{-0.5f,  0.5f,  0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {0,1}, id},
-                {{ 0.5f,  0.5f,  0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {1,1}, id},
-                {{ 0.5f, -0.5f,  0.0f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {1,0}, id}
+                {{-0.5f, -0.5f,  0.0f}, {0,0,1}, {0,0}},
+                {{-0.5f,  0.5f,  0.0f}, {0,0,1}, {0,1}},
+                {{ 0.5f,  0.5f,  0.0f}, {0,0,1}, {1,1}},
+                {{ 0.5f, -0.5f,  0.0f}, {0,0,1}, {1,0}}
             };
 
             indices = {
@@ -103,40 +76,40 @@ namespace OpenEngine {
         OE_CORE_DEBUG("Creating cube with id {}.", id);
         std::vector<MeshVertex> vertices = {
             // Front face (normal 0, 0, 1)
-            {{-0.5f, -0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {0,0}, id},
-            {{-0.5f,  0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {0,1}, id},
-            {{ 0.5f,  0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {1,1}, id},
-            {{ 0.5f, -0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,1}, {1,0}, id},
+            {{-0.5f, -0.5f,  0.5f}, {0,0,1}, {0,0}},
+            {{-0.5f,  0.5f,  0.5f}, {0,0,1}, {0,1}},
+            {{ 0.5f,  0.5f,  0.5f}, {0,0,1}, {1,1}},
+            {{ 0.5f, -0.5f,  0.5f}, {0,0,1}, {1,0}},
 
             // Back face (normal 0, 0, -1)
-            {{-0.5f, -0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,-1}, {0,0}, id},
-            {{-0.5f,  0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,-1}, {0,1}, id},
-            {{ 0.5f,  0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,-1}, {1,1}, id},
-            {{ 0.5f, -0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,0,-1}, {1,0}, id},
+            {{-0.5f, -0.5f, -0.5f}, {0,0,-1}, {0,0}},
+            {{-0.5f,  0.5f, -0.5f}, {0,0,-1}, {0,1}},
+            {{ 0.5f,  0.5f, -0.5f}, {0,0,-1}, {1,1}},
+            {{ 0.5f, -0.5f, -0.5f}, {0,0,-1}, {1,0}},
 
             // Left face (normal -1, 0, 0)
-            {{-0.5f, -0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {-1,0,0}, {0,0}, id},
-            {{-0.5f,  0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {-1,0,0}, {0,1}, id},
-            {{-0.5f,  0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {-1,0,0}, {1,1}, id},
-            {{-0.5f, -0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {-1,0,0}, {1,0}, id},
+            {{-0.5f, -0.5f, -0.5f}, {-1,0,0}, {0,0}},
+            {{-0.5f,  0.5f, -0.5f}, {-1,0,0}, {0,1}},
+            {{-0.5f,  0.5f,  0.5f}, {-1,0,0}, {1,1}},
+            {{-0.5f, -0.5f,  0.5f}, {-1,0,0}, {1,0}},
 
             // Right face (normal 1, 0, 0)
-            {{ 0.5f, -0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {1,0,0}, {0,0}, id},
-            {{ 0.5f,  0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {1,0,0}, {0,1}, id},
-            {{ 0.5f,  0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {1,0,0}, {1,1}, id},
-            {{ 0.5f, -0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {1,0,0}, {1,0}, id},
+            {{ 0.5f, -0.5f, -0.5f}, {1,0,0}, {0,0}},
+            {{ 0.5f,  0.5f, -0.5f}, {1,0,0}, {0,1}},
+            {{ 0.5f,  0.5f,  0.5f}, {1,0,0}, {1,1}},
+            {{ 0.5f, -0.5f,  0.5f}, {1,0,0}, {1,0}},
 
             // Top face (normal 0, 1, 0)
-            {{-0.5f,  0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,1,0}, {0,0}, id},
-            {{-0.5f,  0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,1,0}, {0,1}, id},
-            {{ 0.5f,  0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,1,0}, {1,1}, id},
-            {{ 0.5f,  0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,1,0}, {1,0}, id},
+            {{-0.5f,  0.5f, -0.5f}, {0,1,0}, {0,0}},
+            {{-0.5f,  0.5f,  0.5f}, {0,1,0}, {0,1}},
+            {{ 0.5f,  0.5f,  0.5f}, {0,1,0}, {1,1}},
+            {{ 0.5f,  0.5f, -0.5f}, {0,1,0}, {1,0}},
 
             // Bottom face (normal 0, -1, 0)
-            {{-0.5f, -0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,-1,0}, {0,0}, id},
-            {{-0.5f, -0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,-1,0}, {0,1}, id},
-            {{ 0.5f, -0.5f,  0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,-1,0}, {1,1}, id},
-            {{ 0.5f, -0.5f, -0.5f}, { 0.5f, 0.5f, 0.5f, 1 }, {0,-1,0}, {1,0}, id},
+            {{-0.5f, -0.5f, -0.5f}, {0,-1,0}, {0,0}},
+            {{-0.5f, -0.5f,  0.5f}, {0,-1,0}, {0,1}},
+            {{ 0.5f, -0.5f,  0.5f}, {0,-1,0}, {1,1}},
+            {{ 0.5f, -0.5f, -0.5f}, {0,-1,0}, {1,0}},
         };
 
         std::vector<uint32_t> indices = {
@@ -179,6 +152,8 @@ namespace OpenEngine {
 
         Material material_buffer;
         Ref<UniformBuffer> material_uniform_buffer;
+
+        Ref<UniformBuffer> id_uniform_buffer;
     };
 
     static Renderer3DData renderer_data;
@@ -194,6 +169,7 @@ namespace OpenEngine {
         renderer_data.camera_uniform_buffer = UniformBuffer::Create(sizeof(Renderer3DData::CameraData), 0);
         renderer_data.transform_uniform_buffer = UniformBuffer::Create(sizeof(Renderer3DData::TransformData), 1);
         renderer_data.material_uniform_buffer = UniformBuffer::Create(sizeof(Material), 2);
+        renderer_data.id_uniform_buffer = UniformBuffer::Create(sizeof(uint32_t), 3);
 
         glEnable(GL_DEBUG_OUTPUT);
         glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
@@ -209,6 +185,7 @@ namespace OpenEngine {
         renderer_data.camera_uniform_buffer.reset();
         renderer_data.transform_uniform_buffer.reset();
         renderer_data.material_uniform_buffer.reset();
+        renderer_data.id_uniform_buffer.reset();
     }
     
     void Renderer3D::BeginScene(const SceneCamera& camera, const glm::mat4& transform)
@@ -253,4 +230,48 @@ namespace OpenEngine {
 
         RenderCommand::DrawIndexed(mesh->vertex_array, mesh->indices.size());
     }
+
+    void Renderer3D::DrawMesh(const Ref<Mesh>& mesh, Material& material,
+            const glm::mat4& transform,
+            uint32_t entity_id)
+    {
+        OE_PROFILE_FUNCTION();
+
+        renderer_data.color_shader_3d->Bind();
+
+        renderer_data.transform_buffer.transform = transform;
+        renderer_data.transform_uniform_buffer->SetData(&renderer_data.transform_buffer, sizeof(Renderer3DData::TransformData));
+
+        renderer_data.material_buffer = material;
+        renderer_data.material_uniform_buffer->SetData(&renderer_data.material_buffer, sizeof(Material));
+
+        renderer_data.id_uniform_buffer->SetData(&entity_id, sizeof(uint32_t));
+
+        mesh->vertex_array->Bind();
+
+        RenderCommand::DrawIndexed(mesh->vertex_array, mesh->indices.size());
+    }
+
+    void Renderer3D::DrawModel(const Ref<Model3D>& model,
+            const glm::mat4& transform,
+            uint32_t entity_id)
+    {
+        OE_PROFILE_FUNCTION();
+
+        renderer_data.color_shader_3d->Bind();
+
+        renderer_data.transform_buffer.transform = transform;
+        renderer_data.transform_uniform_buffer->SetData(&renderer_data.transform_buffer, sizeof(Renderer3DData::TransformData));
+
+        for (auto& mesh : *model) {
+            renderer_data.material_buffer = mesh.material;
+            renderer_data.material_uniform_buffer->SetData(&renderer_data.material_buffer, sizeof(Material));
+
+            renderer_data.id_uniform_buffer->SetData(&entity_id, sizeof(uint32_t));
+
+            mesh.vertex_array->Bind();
+
+            RenderCommand::DrawIndexed(mesh.vertex_array, mesh.indices.size());
+        }
+    }
 }

open_engine/src/open_engine/scene/scene.cpp

@@ -1,6 +1,7 @@
 #include "logging.hpp"
 #include "physics.hpp"
 #include "ref_scope.hpp"
+#include "renderer/model3d.hpp"
 #include <Jolt/Physics/Body/MotionType.h>
 #include <Jolt/Physics/Collision/ObjectLayer.h>
 #include <Jolt/Physics/Collision/Shape/ConvexShape.h>
@@ -264,7 +265,17 @@ namespace OpenEngine {
                 material = _entity.GetComponents<MaterialComponent>().material;
 
             if (mesh.mesh)
-                Renderer3D::DrawMesh(mesh.mesh, material, GetTransformFromComp(transform));
+                Renderer3D::DrawMesh(mesh.mesh, material, GetTransformFromComp(transform), (uint32_t)_entity);
+        }
+
+        auto model_view = registry.view<TransformComponent, ModelComponent>();
+
+        for (const auto& entity : model_view) {
+            auto [transform, model_comp] = model_view.get<TransformComponent, ModelComponent>(entity);
+
+            Entity _entity(entity, this);
+
+            Renderer3D::DrawModel(model_comp.model, GetTransformFromComp(transform), (uint32_t)_entity);
         }
 
 		Renderer3D::EndScene();
@@ -363,4 +374,9 @@ namespace OpenEngine {
 	void Scene::OnComponentAdded<PlaneShapeComponent>(Entity entity, PlaneShapeComponent& component)
 	{
 	}
+
+    template<>
+	void Scene::OnComponentAdded<ModelComponent>(Entity entity, ModelComponent& component)
+	{
+	}
 }

open_engine/src/open_engine/scene/scene_serializer.cpp

@@ -93,8 +93,7 @@ namespace OpenEngine {
         out << YAML::BeginMap;
         out << YAML::Key << "Entity" << YAML::Value << entity.GetUUID(); // Needs random
 
-        if (entity.HasComponent<TagComponent>())
-        {
+        if (entity.HasComponent<TagComponent>()) {
             out << YAML::Key << "TagComponent";
             out << YAML::BeginMap; // TagComponent
 
@@ -104,8 +103,7 @@ namespace OpenEngine {
             out << YAML::EndMap; // TagComponent
         }
 
-        if (entity.HasComponent<TransformComponent>())
-        {
+        if (entity.HasComponent<TransformComponent>()) {
             out << YAML::Key << "TransformComponent";
             out << YAML::BeginMap; // TransformComponent
 
@@ -141,8 +139,7 @@ namespace OpenEngine {
             out << YAML::EndMap; // CameraComponent
         }
 
-        if (entity.HasComponent<SpriteRendererComponent>())
-        {
+        if (entity.HasComponent<SpriteRendererComponent>()) {
             out << YAML::Key << "SpriteRendererComponent";
             out << YAML::BeginMap; // SpriteRendererComponent
 
@@ -266,8 +263,7 @@ namespace OpenEngine {
 		OE_CORE_TRACE("Deserializing scene '{0}'", sceneName);
 
 		auto entities = data["Entities"];
-		if (entities)
-		{
+		if (entities) {
 			for (auto entity : entities)
 			{
 				uint64_t uuid = entity["Entity"].as<uint64_t>();
@@ -282,8 +278,7 @@ namespace OpenEngine {
 				Entity deserializedEntity = context->CreateEntityWithUUID(uuid, name);
 
 				auto transformComponent = entity["TransformComponent"];
-				if (transformComponent)
-				{
+				if (transformComponent) {
 					auto& tc = deserializedEntity.AddComponent<TransformComponent>();
 					tc.translation = transformComponent["Translation"].as<glm::vec3>();
 					tc.rotation = transformComponent["Rotation"].as<glm::vec3>();
@@ -291,8 +286,7 @@ namespace OpenEngine {
 				}
 
 				auto cameraComponent = entity["CameraComponent"];
-				if (cameraComponent)
-				{
+				if (cameraComponent) {
 					auto& cc = deserializedEntity.AddComponent<CameraComponent>();
 
 					auto camera_props = cameraComponent["Camera"];
@@ -311,15 +305,13 @@ namespace OpenEngine {
 				}
 
 				auto spriteRendererComponent = entity["SpriteRendererComponent"];
-				if (spriteRendererComponent)
-				{
+				if (spriteRendererComponent) {
 					auto& src = deserializedEntity.AddComponent<SpriteRendererComponent>();
 					src.color = spriteRendererComponent["Color"].as<glm::vec4>();
 				}
 
                 auto mesh_component = entity["MeshComponent"];
-                if (mesh_component)
-                {
+                if (mesh_component) {
                     auto& mesh = deserializedEntity.AddComponent<MeshComponent>();
                     mesh.primitive_type = (PrimitiveType)mesh_component["MeshType"].as<int>();
                     switch (mesh.primitive_type) {
@@ -388,6 +380,7 @@ namespace OpenEngine {
 
 		return true;
     }
+
     bool SceneSerializer::DeserializeRuntime(const std::string& file_path)
     {
         OE_CORE_ASSERT(false, "Not implemented yet");