diff --git a/src/node_stroke_preview.cpp b/src/node_stroke_preview.cpp
index 964c696..6a03afc 100644
--- a/src/node_stroke_preview.cpp
+++ b/src/node_stroke_preview.cpp
@@ -31,9 +31,10 @@ void NodeStrokePreview::clone_finalize(Node* dest) const
 void NodeStrokePreview::init_controls()
 {
     m_mesh.create();
-    m_sampler.create(GL_LINEAR, GL_REPEAT);
-    m_sampler_brush.create();
-    m_sampler_brush.set_filter(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
+    m_sampler_linear.create();
+    m_sampler_linear_repeat.create(GL_LINEAR, GL_REPEAT);
+    m_sampler_mipmap.create();
+    m_sampler_mipmap.set_filter(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
     m_brush_shape.create();
 //     TextureManager::load("data/thumbs/Round-Hard.png");
 //     Canvas::I->m_current_brush.m_tex_id = const_hash("data/thumbs/Round-Hard.png");
@@ -91,6 +92,7 @@ void NodeStrokePreview::stroke_draw_mix(const glm::vec2& bb_min, const glm::vec2
     ShaderManager::u_float(kShaderUniform::PatternBright, b->m_pattern_brightness);
     ShaderManager::u_float(kShaderUniform::PatternContrast, b->m_pattern_contrast);
 
+    m_sampler_linear.bind(0);
     glActiveTexture(GL_TEXTURE0);
     m_tex_background.bind();
     glActiveTexture(GL_TEXTURE1);
@@ -228,11 +230,11 @@ void NodeStrokePreview::draw_stroke()
     glm::mat4 ortho_proj = glm::ortho<float>(0, size.x, 0, size.y, -1, 1);
     glViewport(0, 0, m_rtt.getWidth(), m_rtt.getHeight());
     m_rtt.bindFramebuffer();
-    m_sampler.bind(0);
-    m_sampler.bind(1);
-    m_sampler.bind(2);
-    m_sampler.bind(3);
-    m_sampler.bind(4);
+    m_sampler_mipmap.bind(0);
+    m_sampler_linear.bind(1);
+    m_sampler_linear_repeat.bind(2);
+    m_sampler_linear.bind(3);
+    m_sampler_linear.bind(4);
 
     const auto& b = m_brush;
     m_stroke.m_filter_points = false;
@@ -390,11 +392,11 @@ void NodeStrokePreview::draw_stroke()
     ShaderManager::u_float(kShaderUniform::PatternBright, b->m_pattern_brightness);
     ShaderManager::u_float(kShaderUniform::PatternContrast, b->m_pattern_contrast);
     
-    m_sampler.bind(0);
-    m_sampler.bind(1);
-    m_sampler.bind(2);
-    m_sampler.bind(3);
-    m_sampler.bind(4);
+    m_sampler_linear.bind(0);
+    m_sampler_linear.bind(1);
+    m_sampler_linear.bind(2);
+    m_sampler_linear.bind(3);
+    m_sampler_linear_repeat.bind(4);
 
     glActiveTexture(GL_TEXTURE0);
     m_tex_background.bind();
@@ -419,9 +421,9 @@ void NodeStrokePreview::draw()
     ShaderManager::u_mat4(kShaderUniform::MVP, m_mvp);
     ShaderManager::u_int(kShaderUniform::Tex, 0);
     m_rtt.bindTexture();
-    m_sampler.bind(0);
+    m_sampler_linear.bind(0);
     m_plane.draw_fill();
-    m_sampler.unbind();
+    m_sampler_linear.unbind();
     m_rtt.unbindTexture();
 }
 
diff --git a/src/node_stroke_preview.h b/src/node_stroke_preview.h
index ce9215e..314d417 100644
--- a/src/node_stroke_preview.h
+++ b/src/node_stroke_preview.h
@@ -19,8 +19,9 @@ class NodeStrokePreview : public NodeBorder
     Texture2D m_tex; // blending tmp texture
     Texture2D m_tex_dual;
     Texture2D m_tex_background;
-    Sampler m_sampler;
-    Sampler m_sampler_brush;
+    Sampler m_sampler_linear;
+    Sampler m_sampler_linear_repeat;
+    Sampler m_sampler_mipmap;
     BrushMesh m_mesh;
     DynamicShape m_brush_shape;
 public: