Added teddy to the scene.

assets/scenes/test_scene.yml

@@ -1,7 +1,18 @@
 nodes:
   - type: mesh
     translation: [0, 0, 0]
+    rotation:
+      pitch: 45
+      roll: 45
     mesh: meshes/cube.obj
   - type: mesh
     translation: [1, 0, -10]
+    rotation:
+      yaw: 45
     mesh: meshes/cube.obj
+  - type: mesh
+    translation: [1, 0, -5]
+    rotation:
+      yaw: 90
+    scale: 0.1
+    mesh: meshes/teddy.obj

private/sdl_gpu_test/scene/loader.cpp

@@ -12,6 +12,9 @@ void loadCommonNodeProperties(const YAML::Node& yaml, SceneNode& node)
 {
     const YAML::Node& translationNode = yaml["translation"];
     glm::vec3 translation = {0.f, 0.f, 0.f};
+    glm::vec3 pitchYawRoll = {0.f, 0.f, 0.f};
+    glm::vec3 scale = {1.f, 1.f, 1.f};
+
     if (translationNode.IsDefined())
     {
         mijin::ensure(translationNode.IsSequence() && translationNode.size() == 3
@@ -22,7 +25,45 @@ void loadCommonNodeProperties(const YAML::Node& yaml, SceneNode& node)
         translation.z = translationNode[2].as<float>();
     }
 
-    node.setTransform(Transform3D::make(translation));
+    if (const YAML::Node& rotationNode = yaml["rotation"]; rotationNode.IsDefined())
+    {
+        mijin::ensure(rotationNode.IsMap(), "Invalid scene YAML: node rotation must be a map.");
+        if (const YAML::Node& pitchNode = rotationNode["pitch"]; pitchNode.IsDefined())
+        {
+            mijin::ensure(pitchNode.IsScalar(), "Invalid scene YAML: node pitch must be a scalar.");
+            pitchYawRoll[0] = pitchNode.as<float>();
+        }
+        if (const YAML::Node& yawNode = rotationNode["yaw"]; yawNode.IsDefined())
+        {
+            mijin::ensure(yawNode.IsScalar(), "Invalid scene YAML: yaw pitch must be a scalar.");
+            pitchYawRoll[1] = yawNode.as<float>();
+        }
+        if (const YAML::Node& rollNode = rotationNode["roll"]; rollNode.IsDefined())
+        {
+            mijin::ensure(rollNode.IsScalar(), "Invalid scene YAML: node roll must be a scalar.");
+            pitchYawRoll[2] = rollNode.as<float>();
+        }
+    }
+    if (const YAML::Node& scaleNode = yaml["scale"]; scaleNode.IsDefined())
+    {
+        if (scaleNode.IsScalar())
+        {
+            scale = glm::vec3(scaleNode.as<float>());
+        }
+        else
+        {
+            mijin::ensure(scaleNode.IsSequence() && scaleNode.size() == 3
+                          && scaleNode[0].IsScalar() && scaleNode[1].IsScalar() && scaleNode[2].IsScalar(),
+                          "Invalid scene YAML: node scale must be scalar or sequence of three scalars.");
+            scale = {
+                scaleNode[0].as<float>(),
+                scaleNode[1].as<float>(),
+                scaleNode[2].as<float>()
+            };
+        }
+    }
+
+    node.setTransform(Transform3D::make(translation, glm::quat(glm::radians(pitchYawRoll)), scale));
 }
 
 std::unique_ptr<MeshNode> loadMeshNode(const YAML::Node& yaml)

private/sdl_gpu_test/scene/scene_renderer.cpp

@@ -88,7 +88,7 @@ void SceneRenderer::render(const SceneRendererRenderArgs& args)
             -args.camera.position
         ),
         .viewToClip = glm::perspectiveFov(
-            /* fov    = */ glm::radians(90.f),
+            /* fov    = */ args.camera.fovh,
             /* width  = */ static_cast<float>(args.targetTextureWidth),
             /* height = */ static_cast<float>(args.targetTextureHeight),
             /* zNear  = */ args.camera.zNear,

private/sdl_gpu_test/scene/scene_renderer.hpp

@@ -33,7 +33,7 @@ struct CameraOptions
     float pitch = 0.f;
     float yaw = 0.f;
     float fovh = glm::radians(90.f);
-    float zNear = 0.f;
+    float zNear = 0.1f;
     float zFar = 100.f;
 };
 

private/sdl_gpu_test/scene/transform3d.hpp

@@ -68,7 +68,10 @@ struct Transform3D
 
 inline Transform3D Transform3D::make(const glm::vec3& translation, const glm::quat& rotation, const glm::vec3& scale)
 {
-    return Transform3D{glm::translate(glm::mat4_cast(rotation) * glm::scale(glm::mat4(1), scale), translation)};
+    // return Transform3D{glm::translate(glm::mat4_cast(rotation) * glm::scale(scale), translation)};
+    return Transform3D{
+        glm::translate(translation) * glm::mat4_cast(rotation) * glm::scale(scale)
+    };
 }
 
 void Transform3D::setTranslation(const glm::vec3& translation)

private/sdl_gpu_test/util/mesh.cpp

@@ -44,21 +44,33 @@ Mesh loadMesh(const mijin::PathReference& path)
             for (int vertexIdx = 0; vertexIdx < 3; ++vertexIdx)
             {
                 const tinyobj::index_t& index = shape.mesh.indices[indexOffset + vertexIdx];
+                glm::vec3 normal;
+                glm::vec2 texcoord;
+
+                if (index.normal_index > -1)
+                {
+                    normal = {
+                        attrib.normals[3 * index.normal_index + 0],
+                        attrib.normals[3 * index.normal_index + 1],
+                        attrib.normals[3 * index.normal_index + 2]
+                    };
+                }
+                if (index.texcoord_index > -1)
+                {
+                    texcoord = {
+                        attrib.texcoords[2 * index.texcoord_index + 0],
+                        1.f - attrib.texcoords[2 * index.texcoord_index + 1] // obj UV is weird
+                    };
+                }
+
                 mesh.vertices.push_back({
                     .pos = {
                         attrib.vertices[3 * index.vertex_index + 0],
                         attrib.vertices[3 * index.vertex_index + 1],
                         attrib.vertices[3 * index.vertex_index + 2]
                     },
-                    .normal = {
-                        attrib.normals[3 * index.normal_index + 0],
-                        attrib.normals[3 * index.normal_index + 1],
-                        attrib.normals[3 * index.normal_index + 2]
-                    },
-                    .texcoord = {
-                        attrib.texcoords[2 * index.texcoord_index + 0],
-                        1.f - attrib.texcoords[2 * index.texcoord_index + 1] // obj UV is weird
-                    },
+                    .normal = normal,
+                    .texcoord = texcoord,
                     .color = {
                         attrib.colors[3 * index.vertex_index + 0],
                         attrib.colors[3 * index.vertex_index + 1],