From db41d43345ea73cf7c1bbb29448e52ffb822e3e0 Mon Sep 17 00:00:00 2001
From: vimene <vincent.menegaux@gmail.com>
Date: Tue, 13 Jan 2026 02:04:52 +0100
Subject: 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()
---
 src/renderer.cpp | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

(limited to 'src/renderer.cpp')

diff --git a/src/renderer.cpp b/src/renderer.cpp
index 73b31f7..cf97af8 100644
--- a/src/renderer.cpp
+++ b/src/renderer.cpp
@@ -10,6 +10,7 @@
 using namespace engine;
 using
     engine::math::Vector2,
+    engine::math::Vector3,
     engine::math::Vector4,
     engine::o3d::Triangle,
     engine::o3d::TriangleDerived,
@@ -19,8 +20,7 @@ using
     engine::fb::PixelFrameBuffer;
 
 template<typename FrameBuffer>
-template<typename FBArg>
-Renderer<FrameBuffer>::Renderer(FBArg&& fb) : fb{std::forward<FBArg>(fb)} {
+Renderer<FrameBuffer>::Renderer(FrameBuffer&& fb) : fb { std::forward<FrameBuffer>(fb) } {
     depth_buf.resize(this->fb.width() * this->fb.height());
 }
 
@@ -145,8 +145,9 @@ void Renderer<FrameBuffer>::_draw_cropped_triangle(const Triangle& root, const T
                     loc_z
                 };
                 fb.draw_point(x, y, loc,
-                    VertexData::bilerp(root.vertex1.data, root.vertex2.data, root.vertex3.data, b0, b1),
-                    Vector3::bilerp(root.vertex1.normal, root.vertex2.normal, root.vertex3.normal, b0, b1).normalize());
+                    Vector3   ::bilerp(root.vertex1.normal, root.vertex2.normal, root.vertex3.normal, b0, b1),
+                    Vector2   ::bilerp(root.vertex1.uv,     root.vertex2.uv,     root.vertex3.uv,     b0, b1),
+                    VertexData::bilerp(root.vertex1.data,   root.vertex2.data,   root.vertex3.data,   b0, b1));
             }
         }
     };
@@ -155,8 +156,4 @@ void Renderer<FrameBuffer>::_draw_cropped_triangle(const Triangle& root, const T
 }
 
 template class Renderer<CharacterFrameBuffer>;
-template Renderer<CharacterFrameBuffer>::Renderer(CharacterFrameBuffer&&);
-template Renderer<CharacterFrameBuffer>::Renderer(const CharacterFrameBuffer&);
 template class Renderer<PixelFrameBuffer>;
-template Renderer<PixelFrameBuffer>::Renderer(PixelFrameBuffer&&);
-template Renderer<PixelFrameBuffer>::Renderer(const PixelFrameBuffer&);
-- 
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