Update debug values

src/main.c

@@ -45,9 +45,9 @@ int main(void) {
       .ambient = 0.3f,
       .diffuse = 1.5f,
       .specular = 2.0f,
-      // .ambient = 0.0f,
+      // .ambient = 1.0f,
       // .diffuse = 0.0f,
-      // .specular = 2.0f,
+      // .specular = 0.0f,
       .shininess = 1.5f,
   };
   obj.material = material;

src/model/render.c

@@ -195,7 +195,7 @@ internal TriangleBBox get_triangle_bbox(const Image *img,
 internal V3f get_barycentric_coords(V3f a, V3f b, V3f c, V3f p) {
   V3f s[2];
 
-  for (int i = 2; i--;) {
+  for (u64 i = 0; i < 2; ++i) {
     s[i].x = c.elements[i] - a.elements[i];
     s[i].y = b.elements[i] - a.elements[i];
     s[i].z = a.elements[i] - p.elements[i];
@@ -206,7 +206,7 @@ internal V3f get_barycentric_coords(V3f a, V3f b, V3f c, V3f p) {
     return (V3f){-1.0f, 1.0f, 1.0f};
   }
 
-  return (V3f){1.f - (u.x + u.y) / u.z, u.y / u.z, u.x / u.z};
+  return (V3f){1.0f - (u.x + u.y) / u.z, u.y / u.z, u.x / u.z};
 }
 
 internal V3f get_viewport_vertex(const V3f *vertex, const Image *img) {

src/vec/vec.h

@@ -5,6 +5,8 @@
 #include "typed_list.h"
 #include <math.h>
 
+#define V3_ELEM_COUNT 3
+
 typedef struct i64x2 V2i;
 struct i64x2 {
   i64 x;
@@ -32,7 +34,7 @@ struct f32x2 {
 typedef struct f32x3 V3f;
 struct f32x3 {
   union {
-    f32 elements[3];
+    f32 elements[V3_ELEM_COUNT];
     struct {
       union {
         f32 x;