Merge branch 'blender-v4.2-release'

source/blender/draw/engines/eevee_next/shaders/eevee_forward_lib.glsl

@@ -30,6 +30,7 @@ void forward_lighting_eval(float thickness, out vec3 radiance, out vec3 transmit
     ClosureUndetermined cl = g_closure_get(i);
     if (!valid_N && (cl.weight > 0.0)) {
       surface_N = cl.N;
+      valid_N = true;
     }
     closure_light_set(stack, i, closure_light_new(cl, V));
   }

source/blender/gpu/shaders/material/gpu_shader_material_diffuse.glsl

@@ -7,7 +7,7 @@ void node_bsdf_diffuse(vec4 color, float roughness, vec3 N, float weight, out Cl
   ClosureDiffuse diffuse_data;
   diffuse_data.weight = weight;
   diffuse_data.color = color.rgb;
-  diffuse_data.N = N;
+  diffuse_data.N = safe_normalize(N);
 
   result = closure_eval(diffuse_data);
 }