diff --git a/src/app_shaders.cpp b/src/app_shaders.cpp
index c50d281..0d8c98f 100644
--- a/src/app_shaders.cpp
+++ b/src/app_shaders.cpp
@@ -242,7 +242,6 @@ void App::initShaders()
         "uniform mediump vec2 resolution;\n"
         "uniform bool lock;\n"
         "uniform bool mask;\n"
-        "uniform bool fragUV2;\n"
 
         "uniform bool use_dual;\n"
         "uniform sampler2D tex_dual;\n"
@@ -264,12 +263,11 @@ void App::initShaders()
         SHADER_FUNCTION_BLEND_STROKE
         SHADER_FUNCTION_COLOR
         "void main() {\n"
-        "   mediump vec2 uv2 = fragUV2 ? (gl_FragCoord.st / resolution) : uv;\n"
-        "   mediump vec4 base = texture(tex, uv2);\n"
+        "   mediump vec4 base = texture(tex, uv);\n"
         "   mediump vec4 stroke = texture(tex_stroke, uv);\n"
         "   if (use_pattern){\n"
         "       mediump vec2 rscale = resolution / vec2(512.0);\n"
-        "       mediump float patt = texture(tex_pattern, uv2 * (0.5 / pattern_scale) * rscale + pattern_offset).r;\n"
+        "       mediump float patt = texture(tex_pattern, uv * (0.5 / pattern_scale) * rscale + pattern_offset).r;\n"
         "       if (pattern_bright != 0.5)\n"
         "           patt = brightness1(patt, 1.0 - pattern_bright);\n"
         "       if (pattern_contr != 0.5)\n"
@@ -280,7 +278,7 @@ void App::initShaders()
         "       mediump vec4 dual = texture(tex_dual, uv);\n"
         "       stroke.a = blend_stroke(stroke.a, dual.a * dual_alpha, dual_blend_mode);\n"
         "   }\n"
-        "   stroke.a = mask ? stroke.a * stroke_alpha * blur(tex_mask, uv2).r : stroke.a * stroke_alpha;\n"
+        "   stroke.a = mask ? stroke.a * stroke_alpha * blur(tex_mask, uv).r : stroke.a * stroke_alpha;\n"
         "   if (!lock && base.a == 0.0) { frag = stroke * vec4(1.0, 1.0, 1.0, alpha); return; }\n"
         "   mediump vec4 blended = blend(base, stroke, blend_mode);\n"
         "   frag = vec4(blended.rgb, (lock ? base.a : blended.a) * alpha);\n"
diff --git a/src/canvas.cpp b/src/canvas.cpp
index 346dc5d..80b6d70 100644
--- a/src/canvas.cpp
+++ b/src/canvas.cpp
@@ -253,7 +253,6 @@ void Canvas::stroke_draw_mix(const glm::vec2& bb_min, const glm::vec2& bb_sz)
         ShaderManager::u_float(kShaderUniform::Alpha, 1);
         ShaderManager::u_int(kShaderUniform::Lock, false/*m_layers[layer_index].m_alpha_locked*/);
         ShaderManager::u_int(kShaderUniform::Mask, false/*m_smask_active*/);
-        ShaderManager::u_int(kShaderUniform::UseFragCoordUV2, false);
         ShaderManager::u_int(kShaderUniform::UseDual, false);
         ShaderManager::u_int(kShaderUniform::UsePattern, false);
         ShaderManager::u_int(kShaderUniform::BlendMode, b->m_blend_mode);
@@ -764,7 +763,6 @@ void Canvas::stroke_commit()
             ShaderManager::u_int(kShaderUniform::TexStroke, 1);
             ShaderManager::u_int(kShaderUniform::TexMask, 2);
             ShaderManager::u_int(kShaderUniform::Mask, m_smask_active);
-            ShaderManager::u_int(kShaderUniform::UseFragCoordUV2, false);
             ShaderManager::u_float(kShaderUniform::StrokeAlpha, b->m_tip_opacity);
             ShaderManager::u_float(kShaderUniform::Alpha, 1);
             ShaderManager::u_mat4(kShaderUniform::MVP, glm::ortho(-.5f, .5f, -.5f, .5f, -1.f, 1.f));
@@ -795,7 +793,6 @@ void Canvas::stroke_commit()
             ShaderManager::u_float(kShaderUniform::PatternAlpha, b->m_pattern_opacity);
             ShaderManager::u_float(kShaderUniform::Alpha, 1);
             ShaderManager::u_int(kShaderUniform::Mask, m_smask_active);
-            ShaderManager::u_int(kShaderUniform::UseFragCoordUV2, false);
             ShaderManager::u_int(kShaderUniform::BlendMode, b->m_blend_mode);
             ShaderManager::u_mat4(kShaderUniform::MVP, glm::ortho(-.5f, .5f, -.5f, .5f, -1.f, 1.f));
             ShaderManager::u_int(kShaderUniform::UseDual, b->m_dual_enabled);
@@ -1007,7 +1004,6 @@ void Canvas::layer_merge(int source_idx, int dest_idx) // m_layer index
             ShaderManager::u_int(kShaderUniform::Tex, 0); // dest
             ShaderManager::u_int(kShaderUniform::TexStroke, 1); // source
             ShaderManager::u_vec2(kShaderUniform::Resolution, m_size);
-            ShaderManager::u_int(kShaderUniform::UseFragCoordUV2, false);
             ShaderManager::u_float(kShaderUniform::StrokeAlpha, 1);
             ShaderManager::u_float(kShaderUniform::PatternAlpha, 0);
             ShaderManager::u_float(kShaderUniform::Alpha, m_layers[source_idx].m_opacity);
diff --git a/src/canvas_modes.cpp b/src/canvas_modes.cpp
index 5dcb2bb..d358e71 100644
--- a/src/canvas_modes.cpp
+++ b/src/canvas_modes.cpp
@@ -1157,7 +1157,6 @@ void CanvasModeTransform::leave()
     ShaderManager::u_float(kShaderUniform::StrokeAlpha, 1);
     ShaderManager::u_int(kShaderUniform::Lock, false);
     ShaderManager::u_int(kShaderUniform::Mask, false);
-    ShaderManager::u_int(kShaderUniform::UseFragCoordUV2, false);
     ShaderManager::u_vec2(kShaderUniform::Resolution, Canvas::I->m_size);
     ShaderManager::u_int(kShaderUniform::BlendMode, 0);
     ShaderManager::u_int(kShaderUniform::UseDual, false);
diff --git a/src/node_canvas.cpp b/src/node_canvas.cpp
index cd92457..5aad5f3 100644
--- a/src/node_canvas.cpp
+++ b/src/node_canvas.cpp
@@ -184,7 +184,6 @@ void NodeCanvas::draw()
                 //ShaderManager::u_vec2(kShaderUniform::Resolution, zw(m_canvas->m_box) / zoom);
                 ShaderManager::u_float(kShaderUniform::StrokeAlpha, b->m_tip_opacity);
                 ShaderManager::u_float(kShaderUniform::Alpha, m_canvas->m_layers[layer_index].m_opacity);
-                ShaderManager::u_int(kShaderUniform::UseFragCoordUV2, false);
                 //ShaderManager::u_int(kShaderUniform::Lock, m_canvas->m_layers[layer_index].m_alpha_locked);
                 ShaderManager::u_int(kShaderUniform::Mask, m_canvas->m_smask_active);
                 ShaderManager::u_mat4(kShaderUniform::MVP, plane_mvp_z);
@@ -216,7 +215,6 @@ void NodeCanvas::draw()
                 ShaderManager::u_float(kShaderUniform::Alpha, m_canvas->m_layers[layer_index].m_opacity);
                 ShaderManager::u_int(kShaderUniform::Lock, m_canvas->m_layers[layer_index].m_alpha_locked);
                 ShaderManager::u_int(kShaderUniform::Mask, m_canvas->m_smask_active);
-                ShaderManager::u_int(kShaderUniform::UseFragCoordUV2, false);
                 ShaderManager::u_int(kShaderUniform::BlendMode, b->m_blend_mode);
                 ShaderManager::u_mat4(kShaderUniform::MVP, plane_mvp_z);
                 ShaderManager::u_int(kShaderUniform::UseDual, b->m_dual_enabled);
diff --git a/src/node_stroke_preview.cpp b/src/node_stroke_preview.cpp
index 5ddfd92..ea6033e 100644
--- a/src/node_stroke_preview.cpp
+++ b/src/node_stroke_preview.cpp
@@ -82,7 +82,6 @@ void NodeStrokePreview::stroke_draw_mix(const glm::vec2& bb_min, const glm::vec2
     ShaderManager::u_float(kShaderUniform::Alpha, 1);
     ShaderManager::u_int(kShaderUniform::Lock, false);
     ShaderManager::u_int(kShaderUniform::Mask, false);
-    ShaderManager::u_int(kShaderUniform::UseFragCoordUV2, false);
     ShaderManager::u_int(kShaderUniform::BlendMode, b->m_blend_mode);
     ShaderManager::u_mat4(kShaderUniform::MVP, glm::ortho(-.5f, .5f, -.5f, .5f, -1.f, 1.f));
     ShaderManager::u_int(kShaderUniform::UseDual, b->m_dual_enabled);
@@ -387,7 +386,6 @@ void NodeStrokePreview::draw_stroke()
     ShaderManager::u_float(kShaderUniform::PatternAlpha, b->m_pattern_opacity);
     ShaderManager::u_float(kShaderUniform::Alpha, 1);
     ShaderManager::u_int(kShaderUniform::Mask, false);
-    ShaderManager::u_int(kShaderUniform::UseFragCoordUV2, false);
     ShaderManager::u_int(kShaderUniform::BlendMode, b->m_blend_mode);
     ShaderManager::u_mat4(kShaderUniform::MVP, glm::ortho(-.5f, .5f, -.5f, .5f, -1.f, 1.f));
     ShaderManager::u_int(kShaderUniform::UseDual, b->m_dual_enabled);
diff --git a/src/shader.h b/src/shader.h
index 4f41af6..d2e0c1c 100644
--- a/src/shader.h
+++ b/src/shader.h
@@ -31,7 +31,6 @@ enum class kShaderUniform : uint16_t
     DualBlendMode = const_hash("dual_blend_mode"),
     Noise = const_hash("noise"),
     Direction = const_hash("dir"),
-    UseFragCoordUV2 = const_hash("fragUV2"),
     UseDual = const_hash("use_dual"),
     UsePattern = const_hash("use_pattern"),
     LightDir = const_hash("light_dir"),