correct tbn

1 files changed, 2 insertions, 2 deletions

diff --git a/intermediate/surface.glsl b/intermediate/surface.glsl
index 7988502..8afc657 100644
--- a/intermediate/surface.glsl
+++ b/intermediate/surface.glsl
@@ -99,8 +99,8 @@ type: vec4
 void main() {
 	vec4 pos = c_mvp.model * vec4(position, 1.0);
 	vec3 t = normalize((c_mvp.model * vec4(tangent, 0.0)).xyz);
-	vec3 b = normalize((c_mvp.model * vec4(normal, 0.0)).xyz);
-	vec3 n = normalize((c_mvp.model * vec4(cross(normal, tangent), 0.0)).xyz);
+	vec3 n = normalize((c_mvp.model * vec4(normal, 0.0)).xyz);
+	vec3 b = cross(t, n);
 	interpolator.normal = n;
 	interpolator.tbn = mat3(t, b, n);
 	interpolator.uv = uv;