Initial test

This reverts commit 4f7b712f8c.

@@ -117,6 +117,10 @@ class DATA_PT_EEVEE_light(DataButtonsPanel, Panel):
             col.separator()
 
             col.prop(light, "use_shadow", text="Cast Shadow")
+            col.prop(light, "use_shadow_jittering", text="Shadow Jittering")

@@ -94,1 +97,3 @@
-                              la->shadow_trace_distance);
+                              la->sun_angle * softness,
+                              la->shadow_trace_distance,
+                              this->sun.radius * la->shadow_softness_factor);

@@ -113,3 +118,3 @@
                            radius,
                            this->local.influence_radius_max,
-                           la->shadow_softness_factor,
+                           softness,

@@ -344,1 +349,3 @@
-  if (handle.recalc != 0 || !light.initialized) {
+
+  ::Light *bl_light = static_cast<::Light *>(ob->data);
+  light.do_jittering = inst_.shadows.do_jittering() && bl_light->mode & LA_SHADOW_JITTER;

@@ -349,4 +386,3 @@
   float4x4 obmat_tmp = light.object_mat;
-
   /* Clear embedded custom data. */
   obmat_tmp[0][3] = obmat_tmp[1][3] = obmat_tmp[2][3] = 0.0f;

@@ -687,0 +723,4 @@
+    float3 jitter = object_mat_.x_axis() * r_disk.x + object_mat_.y_axis() * r_disk.y;
+    object_mat_[2] += float4(jitter, 0.0f);
+    object_mat_ = math::orthogonalize(object_mat_, math::Axis::Z);
+    light.object_mat = object_mat_;

@@ -90,6 +90,8 @@ void shadow_tag_usage_tilemap_punctual(
   }
 
   vec3 lP = light_world_to_local(light, P - light._position);
+  lP -= light_local_data_get(light).shadow_projection_shift;

@@ -35,2 +33,2 @@
-  light.do_not_access_directly._pad0_reserved = intBitsToFloat(clipmap_base_offset.x);
-  light.do_not_access_directly._pad1_reserved = intBitsToFloat(clipmap_base_offset.y);
+  // light.do_not_access_directly.shadow_scale = intBitsToFloat(0);
+  // light.do_not_access_directly.shadow_projection_shift = intBitsToFloat(0);

@@ -562,0 +560,4 @@
+  }
+  else {
+    lP = light_world_to_local(light, P - light._position) -
+         light_local_data_get(light).shadow_projection_shift;

@@ -81,3 +81,2 @@
   float shadow_resolution_scale;
-
-  float _pad0;
+  float shadow_jitter_overblur;

@@ -153,6 +153,10 @@ class DATA_PT_EEVEE_light_shadow(DataButtonsPanel, Panel):
         layout.active = context.scene.eevee.use_shadows and light.use_shadow
 
         col = layout.column()
+        col.prop(light, "use_shadow_jittering")

@@ -780,2 +780,4 @@
         col.prop(props, "shadow_normal_bias", text="Normal Bias")
 
+        col = layout.column()
+        col.prop(props, "use_shadow_jittered_viewport", text="Jittered Shadows (Viewport)")

@@ -341,2 +328,4 @@
   Light &light = light_map_.lookup_or_add_default(handle.object_key);
   light.used = true;
+
+  ::Light *bl_light = static_cast<::Light *>(ob->data);

@@ -737,3 +787,2 @@
 
-  jittered_transparency_ = !inst_.is_viewport() ||
-                           scene.eevee.flag & SCE_EEVEE_SHADOW_JITTERED_VIEWPORT;
+  do_jittering_ = !inst_.is_viewport() || (scene.eevee.flag & SCE_EEVEE_SHADOW_JITTERED_VIEWPORT &&

@@ -261,3 +262,3 @@
                                           shadow_P,
                                           Ng,
-                                          lv.L,
+                                          L,

@@ -17,0 +28,4 @@
+  }
+}
+
+vec3 light_local_to_shadow_local(LightData light, vec3 lP, bool is_directional)

@@ -53,2 +55,4 @@
     float local_min = FLT_MAX;
     float local_max = -FLT_MAX;
+
+    vec3 L = shadow_vector_get(light, true, vec3(0));

@@ -55,6 +55,26 @@ Quaternion Quaternion_identity()
   return Quaternion(1, 0, 0, 0);
 }
 
+Quaternion as_quaternion(vec4 quat)

@@ -58,0 +60,4 @@
+  return Quaternion(quat.x, quat.y, quat.z, quat.w);
+}
+
+Quaternion invert(Quaternion quat)

@@ -58,0 +62,4 @@
+
+Quaternion invert(Quaternion quat)
+{
+  quat.x *= -1.0;

@@ -58,0 +68,4 @@
+  return quat;
+}
+
+vec3 rotate(Quaternion quat, vec3 vec)

@@ -325,0 +331,4 @@
+  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
+  RNA_def_property_update(prop, 0, "rna_Light_update");
+
+  prop = RNA_def_property(srna, "shadow_jitter_overblur", PROP_FLOAT, PROP_FACTOR);

@@ -325,0 +332,4 @@
+  RNA_def_property_update(prop, 0, "rna_Light_update");
+
+  prop = RNA_def_property(srna, "shadow_jitter_overblur", PROP_FLOAT, PROP_FACTOR);
+  RNA_def_property_range(prop, 0.0f, 1.0);

@@ -325,0 +333,4 @@
+
+  prop = RNA_def_property(srna, "shadow_jitter_overblur", PROP_FLOAT, PROP_FACTOR);
+  RNA_def_property_range(prop, 0.0f, 1.0);
+  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1f, 2);