app/src/main/assets/shaders/bg.vert

@@ -45,6 +45,8 @@ layout(push_constant) uniform PushConstants {
 	float radius;
 	float ux;
 	float uy;
+    float offset_x;
+	float offset_y;
 } pushConstants;
 
 
@@ -55,6 +57,8 @@ void main() {
     // 获取顶点位置
     vec2 position = positions[gl_VertexIndex];
     position = position * pushConstants.zoom;
+    position.x = position.x + (pushConstants.offset_x/480);
+	position.y = position.y + (pushConstants.offset_y/480);
     
     // 设置输出位置（Vulkan使用不同的坐标系）
     gl_Position = vec4(position, 0.0, 1.0);

app/src/main/assets/shaders/texture.vert

@@ -24,6 +24,8 @@ layout(push_constant) uniform PushConstants {
 	float radius;
 	float ux;
 	float uy;
+	float offset_x;
+	float offset_y;
 } pushConstants;
 
 out gl_PerVertex 
@@ -37,6 +39,8 @@ void main()
 
 	vec2 position = vec2(inPos.xy*2 -1);
     position = position * pushConstants.zoom;
+	position.x = position.x + (pushConstants.offset_x/480);
+	position.y = position.y + (pushConstants.offset_y/480);
     gl_Position = vec4(position, 0.5, 1.0);
 
     vec4 pos = ubo.model * vec4(inPos, 1.0);

app/src/main/java/com/hmwl/face_sdk/InitArg.java

@@ -8,7 +8,8 @@ public class InitArg {
     public float g;
     public float b;
     public float radius;
-
+    public float offset_x;
+    public float offset_y;
     public String toJson() {
         try {
             JSONObject jsonObject = new JSONObject();
@@ -18,6 +19,8 @@ public class InitArg {
             jsonObject.put("g", g);
             jsonObject.put("b", b);
             jsonObject.put("radius", radius);
+            jsonObject.put("offset_x", offset_x);
+            jsonObject.put("offset_y", offset_y);
             return jsonObject.toString();
         } catch (Exception e) {
             e.printStackTrace();

example/src/main/java/com/inewme/uvmirror/MakeupActivity.kt

@@ -19,7 +19,7 @@ class MakeupActivity : FaceActivity()
     lateinit var motionMgr: MotionManager
     private var updateJob: Job? = null
     override fun onCreate(savedInstanceState: Bundle?) {
-        motionMgr = MotionManager(this, 10, 1.5f, 0f,0f,1f,240f)
+        motionMgr = MotionManager(this, 10, 1.5f, 0f,0f,1f,240f, 200f, -200f)
         super.onCreate(savedInstanceState)
         // 启动一个生命周期感知的协程, 每10ms 调用一次，可以通过update 来处理业务的逻辑
         updateJob = lifecycleScope.launch {

example/src/main/java/com/inewme/uvmirror/MotionManager.kt

@@ -16,7 +16,7 @@ import java.io.InputStreamReader
 class MotionManager {
     var faceActivity:FaceActivity
 
-    constructor(activity: FaceActivity, fps: Int, z: Float, r: Float, g: Float, b: Float, radius: Float) {
+    constructor(activity: FaceActivity, fps: Int, z: Float, r: Float, g: Float, b: Float, radius: Float, offset_x:Float, offset_y: Float) {
         faceActivity = activity
         val initArg = InitArg().apply {
             action_fps = fps
@@ -25,6 +25,8 @@ class MotionManager {
             this.g = g
             this.b = b
             this.radius = radius
+            this.offset_x = offset_x;
+            this.offset_y = offset_y;
         }
         activity.SetInitArg(initArg.toJson())
         existMotions = readMotionsFromAssets(activity, "pic/motion_data_ex.json")

vulkan/FaceApp.cpp

@@ -1377,6 +1377,8 @@ void FaceApp::SetInitArg(const char* arg)
 	pushConstants.g = _initArg.g;
 	pushConstants.b = _initArg.b;
 	pushConstants.radius = _initArg.radius;
+	pushConstants.offset_x = _initArg.offset_x;
+	pushConstants.offset_y = _initArg.offset_y;
 }
 
 void FaceApp::drawFrame(long long frameTime)

vulkan/FaceApp.h

@@ -42,8 +42,10 @@ struct InitArg
     float g;
     float b;
     float radius;
+    float offset_x;
+    float offset_y;
     //Motion motion;
-    NLOHMANN_DEFINE_TYPE_INTRUSIVE(InitArg, action_fps, zoom, r, g, b, radius);
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE(InitArg, action_fps, zoom, r, g, b, radius, offset_x, offset_y);
 };
 
 
@@ -55,6 +57,8 @@ struct PushConstants {
     float radius = 240;
     float ux = 0;
     float uy = 0;
+    float offset_x = 0;
+    float offset_y = 0;
 };
 
 using Callback = std::function<void()>;

vulkan/main.cpp

@@ -154,6 +154,8 @@ int main() {
     init_arg.g = 0;
     init_arg.b = 0;
     init_arg.radius = 240;
+    init_arg.offset_x = 100;
+    init_arg.offset_y = -100;
 
     string json_str = json(init_arg).dump();