diff --git a/src/ge_particle_circular_halo_shader.cpp b/src/ge_particle_circular_halo_shader.cpp
index 472b5d41d14c76da35db5b421a5541989d61d002..5bc417c023c0985b98c4aa0729b7b528201c5f59 100644
--- a/src/ge_particle_circular_halo_shader.cpp
+++ b/src/ge_particle_circular_halo_shader.cpp
@@ -21,11 +21,10 @@ namespace OHOS {
 namespace Rosen {
 
 namespace {
-    constexpr float DOWN_SAMPLE_SCALE = 4.0;
     static constexpr char GLOW_HALO_PROG[] = R"(
         uniform half2 iResolution;
         uniform half2 rotationCenter;  // center of the halo rings, normalized coords (0. - 10.)
-        uniform float DOWN_SAMPLE_SCALE;
+        const half DOWN_SAMPLE_SCALE = 4.0;
 
         vec4 fragColor;
         const float PI = 3.14159;
@@ -154,7 +153,7 @@ namespace {
         uniform half2 iResolution;
         uniform half randomNoise;
         uniform half2 rotationCenter; // center of the halo rings, normalized coords (0. - 1.)
-        uniform half DOWN_SAMPLE_SCALE;
+        const half DOWN_SAMPLE_SCALE = 4.0;
 
         half4 fragColor;
         // ****************************** Constants ******************************
@@ -255,7 +254,7 @@ namespace {
         uniform half2 rotationCenter;  // center of the halo rings, normalized coords (0. - 1.)
         uniform shader particleHalo;
         uniform shader glowHalo;
-        uniform float DOWN_SAMPLE_SCALE;
+        const half DOWN_SAMPLE_SCALE = 4.0;
 
         vec4 fragColor;
         const int NUMBER_OF_SAMPLES = 11;  // Number of samples used for blur effects
@@ -627,7 +626,6 @@ std::shared_ptr<Drawing::Image> GEParticleCircularHaloShader::MakeGlowHaloShader
     glowHaloBuilder_->SetUniform("iResolution", width, height);
     glowHaloBuilder_->SetUniform("rotationCenter", particleCircularHaloParams_.center_.first,
         particleCircularHaloParams_.center_.second);
-    glowHaloBuilder_->SetUniform("DOWN_SAMPLE_SCALE", DOWN_SAMPLE_SCALE);
     auto preCalculatedGlowHaloShader = glowHaloBuilder_->MakeImage(canvas.GetGPUContext().get(),
         nullptr, imageInfo, false);
     if (preCalculatedGlowHaloShader == nullptr) {
@@ -652,7 +650,6 @@ std::shared_ptr<Drawing::Image> GEParticleCircularHaloShader::MakeParticleHaloSh
     particleHaloBuilder_->SetUniform("rotationCenter", particleCircularHaloParams_.center_.first,
         particleCircularHaloParams_.center_.second);
     particleHaloBuilder_->SetUniform("randomNoise", particleCircularHaloParams_.noise_);
-    particleHaloBuilder_->SetUniform("DOWN_SAMPLE_SCALE", DOWN_SAMPLE_SCALE);
     auto particleHaloShader =
         particleHaloBuilder_->MakeImage(canvas.GetGPUContext().get(), nullptr, imageInfo, false);
     if (particleHaloShader == nullptr) {
@@ -702,7 +699,6 @@ std::shared_ptr<Drawing::ShaderEffect> GEParticleCircularHaloShader::MakeParticl
     builder_->SetUniform("globalRadius", particleCircularHaloParams_.radius_);
     builder_->SetUniform("rotationCenter", particleCircularHaloParams_.center_.first,
         particleCircularHaloParams_.center_.second);
-    builder_->SetUniform("DOWN_SAMPLE_SCALE", DOWN_SAMPLE_SCALE);
     auto particleCircularHaloShader = builder_->MakeShader(nullptr, false);
     if (particleCircularHaloShader == nullptr) {
         GE_LOGE(
diff --git a/test/unittest/ge_particle_circular_halo_shader_test.cpp b/test/unittest/ge_particle_circular_halo_shader_test.cpp
index fc721f2423e3b6bb4ed06b0764cb352766fd19de..a2b76030589256472513f47fc21d484d07b222cc 100644
--- a/test/unittest/ge_particle_circular_halo_shader_test.cpp
+++ b/test/unittest/ge_particle_circular_halo_shader_test.cpp
@@ -33,7 +33,7 @@ public:
     void TearDown() override;
     std::shared_ptr<Drawing::Image> MakeImage(Drawing::Canvas& canvas);
 
-    static inline Drawing::Canvas canvas_;
+    Drawing::Canvas canvas_;
     std::shared_ptr<Drawing::Image> image_ { nullptr };
 
     // 1.0f, 1.0f, 2.0f, 2.0f is left top right bottom
@@ -65,6 +65,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest001,
     params.noise_ = 4.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -86,6 +87,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest002,
     params.noise_ = 4.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -107,6 +109,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest003,
     params.noise_ = 4.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -128,6 +131,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest004,
     params.noise_ = 4.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -149,6 +153,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest005,
     params.noise_ = 4.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -170,6 +175,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest006,
     params.noise_ = 4.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -191,6 +197,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest007,
     params.noise_ = 4.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -212,6 +219,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest008,
     params.noise_ = -2.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -233,6 +241,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest009,
     params.noise_ = -2.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -253,6 +262,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest010,
     params.noise_ = 2.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {
@@ -274,6 +284,7 @@ HWTEST_F(GEParticleCircularHaloShaderTest, GEParticleCircularHaloShaderTest011,
     params.noise_ = 2.0f;
 
     auto shader = GEParticleCircularHaloShader::CreateParticleCircularHaloShader(params);
+    void GEParticleCircularHaloShader::Preprocess(canvas_, rect_);
     auto shaderEffect = shader->MakeParticleCircularHaloShader(rect_);
 
     if (shaderEffect) {