Simplify GLSL in bump mapping, use gl_NormalMatrix where appropriate.

tangents are directions and should be transformed like directions.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/gpu/shaders/gpu_shader_material.glsl b/source/blender/gpu/shaders/gpu_shader_material.glsl
index 23716c8105d..5a0812cb367 100644
--- a/source/blender/gpu/shaders/gpu_shader_material.glsl
+++ b/source/blender/gpu/shaders/gpu_shader_material.glsl
@@ -1507,9 +1507,9 @@ void mtex_nspace_world(mat4 viewmat, vec3 texnormal, out vec3 outnormal)
 	outnormal = normalize((viewmat*vec4(texnormal, 0.0)).xyz);
 }
 
-void mtex_nspace_object(mat4 viewmat, mat4 obmat, vec3 texnormal, out vec3 outnormal)
+void mtex_nspace_object(vec3 texnormal, out vec3 outnormal)
 {
-	outnormal = normalize((viewmat*(obmat*vec4(texnormal, 0.0))).xyz);
+	outnormal = normalize(gl_NormalMatrix * texnormal);
 }
 
 void mtex_blend_normal(float norfac, vec3 normal, vec3 newnormal, out vec3 outnormal)