diff --git a/doc/demo10_animation/animation.md b/doc/demo10_animation/animation.md
index 96fe101..661af09 100644
--- a/doc/demo10_animation/animation.md
+++ b/doc/demo10_animation/animation.md
@@ -1,3 +1,12 @@
+- sprite
+
+```
+上世纪70年代，在德州电器公司，一个叫Daniel Hillis的前辈最早把Sprite这个词用在计算机图形上，在展示界面上，
+有一些东西在实现层面并不是和整个画面融为一体的，而是『漂浮』在其他画面之上，像『幽灵』一样，所以被称为Sprite。
+
+一张一张的图片组成了一个会动的精灵
+```
+
 ![Image text](image/animation1.png)
 ![Image text](image/animation2.png)
 ![Image text](image/animation3.png)
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+modulate = Color( 0.109804, 0.0784314, 0.482353, 1 )
+position = Vector2( 671.349, 157.411 )
+scale = Vector2( 0.33008, 0.33008 )
+texture = ExtResource( 1 )
+
+[node name="Light2D" type="Light2D" parent="."]
+position = Vector2( 537.522, 221.192 )
+scale = Vector2( 3.52112, 0.96036 )
+texture = ExtResource( 1 )
diff --git a/scene/demo11_particle_light/occlude.tscn b/scene/demo11_particle_light/occlude.tscn
new file mode 100644
index 0000000..147ec4c
--- /dev/null
+++ b/scene/demo11_particle_light/occlude.tscn
@@ -0,0 +1,40 @@
+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://scene/demo11_particle_light/image/white_square.png" type="Texture" id=1]
+[ext_resource path="res://icon.png" type="Texture" id=2]
+
+[sub_resource type="OccluderPolygon2D" id=1]
+polygon = PoolVector2Array( -149.743, -150.861, -148.283, 150.259, 150.348, 150.259, 150.348, -151.244 )
+
+[node name="Node2D" type="Node2D"]
+
+[node name="Background" type="Sprite" parent="."]
+modulate = Color( 0.427451, 0.392157, 0.392157, 1 )
+light_mask = 3
+position = Vector2( 514.927, 190.273 )
+scale = Vector2( 3, 100 )
+texture = ExtResource( 1 )
+
+[node name="Shadow" type="Sprite" parent="."]
+modulate = Color( 0.490196, 0.0509804, 0.541176, 1 )
+position = Vector2( 478.061, 140.326 )
+scale = Vector2( 0.31026, 0.31026 )
+texture = ExtResource( 1 )
+
+[node name="LightOccluder2D" type="LightOccluder2D" parent="Shadow"]
+light_mask = 2
+occluder = SubResource( 1 )
+light_mask = 2
+
+[node name="Light" type="Sprite" parent="."]
+position = Vector2( 462.666, 380.919 )
+texture = ExtResource( 2 )
+__meta__ = {
+"_edit_group_": true
+}
+
+[node name="Light2D" type="Light2D" parent="Light"]
+scale = Vector2( 10, 10 )
+texture = ExtResource( 1 )
+shadow_enabled = true
+shadow_item_cull_mask = 2
diff --git a/scene/demo11_particle_light/particle1.tscn b/scene/demo11_particle_light/particle1.tscn
new file mode 100644
index 0000000..f8a8b30
--- /dev/null
+++ b/scene/demo11_particle_light/particle1.tscn
@@ -0,0 +1,37 @@
+[gd_scene load_steps=7 format=2]
+
+[ext_resource path="res://scene/demo11_particle_light/image/white_square.png" type="Texture" id=1]
+
+[sub_resource type="Gradient" id=1]
+colors = PoolColorArray( 0.29541, 0.150013, 0.150013, 1, 0.682129, 0.167868, 0.167868, 1 )
+
+[sub_resource type="GradientTexture" id=2]
+gradient = SubResource( 1 )
+
+[sub_resource type="Curve" id=3]
+_data = [ Vector2( 0.0592105, 0.263636 ), 0.0, 0.0, 0, 0, Vector2( 0.532895, 0.745454 ), 0.0, 0.0, 0, 0, Vector2( 0.967105, 0.327273 ), 0.0, 0.0, 0, 0 ]
+
+[sub_resource type="CurveTexture" id=4]
+curve = SubResource( 3 )
+
+[sub_resource type="ParticlesMaterial" id=5]
+flag_disable_z = true
+direction = Vector3( 0, -1, 0 )
+spread = 10.0
+gravity = Vector3( 0, 0, 0 )
+initial_velocity = 441.86
+angular_velocity = 200.93
+orbit_velocity = 0.0
+orbit_velocity_random = 0.0
+scale = 0.2
+scale_random = 0.36
+scale_curve = SubResource( 4 )
+color_ramp = SubResource( 2 )
+
+[node name="Node2D" type="Node2D"]
+
+[node name="Particles2D" type="Particles2D" parent="."]
+position = Vector2( 433.903, 489.402 )
+amount = 20
+process_material = SubResource( 5 )
+texture = ExtResource( 1 )