Shading: Add White Noise node.

The White Noise node hashes the input and returns a random number in the
range [0, 1]. The input can be a 1D, 2D, 3D, or a 4D vector.

Reviewers: brecht, JacquesLucke

Differential Revision: https://developer.blender.org/D5550

5 files changed, 14 insertions, 8 deletions

diff --git a/intern/cycles/blender/blender_curves.cpp b/intern/cycles/blender/blender_curves.cpp
index 29a1408d85d..4dba8ffbe0e 100644
--- a/intern/cycles/blender/blender_curves.cpp
+++ b/intern/cycles/blender/blender_curves.cpp
@@ -656,7 +656,7 @@ static void ExportCurveSegments(Scene *scene, Mesh *mesh, ParticleCurveData *CDa
       }
 
       if (attr_random != NULL) {
-        attr_random->add(hash_int_01(num_curves));
+        attr_random->add(hash_uint2_to_float(num_curves, 0));
       }
 
       mesh->add_curve(num_keys, CData->psys_shader[sys]);
diff --git a/intern/cycles/blender/blender_object.cpp b/intern/cycles/blender/blender_object.cpp
index 7ccf8226e5b..ab47da9c1a2 100644
--- a/intern/cycles/blender/blender_object.cpp
+++ b/intern/cycles/blender/blender_object.cpp
@@ -217,7 +217,7 @@ void BlenderSync::sync_light(BL::Object &b_parent,
     light->random_id = random_id;
   }
   else {
-    light->random_id = hash_int_2d(hash_string(b_ob.name().c_str()), 0);
+    light->random_id = hash_uint2(hash_string(b_ob.name().c_str()), 0);
   }
 
   if (light->type == LIGHT_AREA)
@@ -490,7 +490,7 @@ Object *BlenderSync::sync_object(BL::Depsgraph &b_depsgraph,
     else {
       object->dupli_generated = make_float3(0.0f, 0.0f, 0.0f);
       object->dupli_uv = make_float2(0.0f, 0.0f);
-      object->random_id = hash_int_2d(hash_string(object->name.c_str()), 0);
+      object->random_id = hash_uint2(hash_string(object->name.c_str()), 0);
     }
 
     object->tag_update(scene);
diff --git a/intern/cycles/blender/blender_session.cpp b/intern/cycles/blender/blender_session.cpp
index 047cc82dbfc..9a798a4f979 100644
--- a/intern/cycles/blender/blender_session.cpp
+++ b/intern/cycles/blender/blender_session.cpp
@@ -539,8 +539,8 @@ void BlenderSession::render(BL::Depsgraph &b_depsgraph_)
     /* Make sure all views have different noise patterns. - hardcoded value just to make it random
      */
     if (view_index != 0) {
-      scene->integrator->seed += hash_int_2d(scene->integrator->seed,
-                                             hash_int(view_index * 0xdeadbeef));
+      scene->integrator->seed += hash_uint2(scene->integrator->seed,
+                                            hash_uint2(view_index * 0xdeadbeef, 0));
       scene->integrator->tag_update(scene);
     }
 
diff --git a/intern/cycles/blender/blender_shader.cpp b/intern/cycles/blender/blender_shader.cpp
index 322a1771786..fdefe2140bd 100644
--- a/intern/cycles/blender/blender_shader.cpp
+++ b/intern/cycles/blender/blender_shader.cpp
@@ -844,6 +844,12 @@ static ShaderNode *add_node(Scene *scene,
     }
     node = ies;
   }
+  else if (b_node.is_a(&RNA_ShaderNodeTexWhiteNoise)) {
+    BL::ShaderNodeTexWhiteNoise b_tex_white_noise_node(b_node);
+    WhiteNoiseTextureNode *white_noise_node = new WhiteNoiseTextureNode();
+    white_noise_node->dimensions = b_tex_white_noise_node.dimensions();
+    node = white_noise_node;
+  }
   else if (b_node.is_a(&RNA_ShaderNodeNormalMap)) {
     BL::ShaderNodeNormalMap b_normal_map_node(b_node);
     NormalMapNode *nmap = new NormalMapNode();
diff --git a/intern/cycles/blender/blender_sync.cpp b/intern/cycles/blender/blender_sync.cpp
index bac571b02ce..aec21887088 100644
--- a/intern/cycles/blender/blender_sync.cpp
+++ b/intern/cycles/blender/blender_sync.cpp
@@ -255,13 +255,13 @@ void BlenderSync::sync_integrator()
 
   integrator->seed = get_int(cscene, "seed");
   if (get_boolean(cscene, "use_animated_seed")) {
-    integrator->seed = hash_int_2d(b_scene.frame_current(), get_int(cscene, "seed"));
+    integrator->seed = hash_uint2(b_scene.frame_current(), get_int(cscene, "seed"));
     if (b_scene.frame_subframe() != 0.0f) {
       /* TODO(sergey): Ideally should be some sort of hash_merge,
        * but this is good enough for now.
        */
-      integrator->seed += hash_int_2d((int)(b_scene.frame_subframe() * (float)INT_MAX),
-                                      get_int(cscene, "seed"));
+      integrator->seed += hash_uint2((int)(b_scene.frame_subframe() * (float)INT_MAX),
+                                     get_int(cscene, "seed"));
     }
   }