added textures for the hardware renderer

- removed "using" directive in .hpp
- reverse order of arguments for quaternion rotation, i.e. q.rot(v)
  instead of v.rot(q), where q is a quaterinon and v a vector
- pass the inverse of the view matrix to render_and_present_frame, to
  allow light calculation in shaders (we used to just pass the matrix of
  the quaternion of the transformation, i.e. discard scaling and
  translations)
- added another mesh and texture (viking_room) for testing purposes
- added transparent background option
- added Quaternion::look_towards(), which is the equivalent of
  Matrix4::look_at() but only for rotations
- various improvement to .obj parsing
- load texture coordinates from .obj file
- merged duplicate vertices in Mesh::linearize_indices()

1 files changed, 2 insertions, 1 deletions

diff --git a/src/o3d/mesh.hpp b/src/o3d/mesh.hpp
index 525d9bd..d1d3f1c 100644
--- a/src/o3d/mesh.hpp
+++ b/src/o3d/mesh.hpp
@@ -17,7 +17,8 @@ struct Mesh {
 
     std::vector<engine::math::Vector3> vertices;
     std::vector<engine::math::Vector3> normals;
-    std::vector<std::array<std::array<size_t, 2>, 3>> indices;
+    std::vector<engine::math::Vector2> uvs;
+    std::vector<std::array<std::array<size_t, 3>, 3>> indices;
 
     // TODO: find a better way to do this. This workaround is due to the fact that vulkan only
     // accepts a single index, not an index for each attributes