diff --git a/index.html b/index.html
index 68052157..873c3d3b 100644
--- a/index.html
+++ b/index.html
@@ -10,27 +10,27 @@
 <script>
     window.addEventListener("DOMContentLoaded", async () => 
     {
-        // next2d.load("develop");
-        const { Sprite, Shape } = next2d.display;
-        const root = await next2d.createRootMovieClip(480, 480);
-        const shape = root.addChild(new Shape());
-        shape.x = 75;
-        shape.y = 75;
-        shape
-            .graphics
-            .beginFill(0x0000ff)
-            .moveTo(0, 0).curveTo(50, -25, 100, 0).curveTo(125, 50, 100, 100).lineTo(0, 100).curveTo(20, 50, 0, 0)
-            // .endFill()
-            // non-zero
-            // .beginFill(0x00ff00)
-            .moveTo(75, 75).curveTo(170, 30, 75, 50).curveTo(50, 10, 50, 50).curveTo(95, 25+35/2, 50, 75).lineTo(75, 75)
-            // .endFill()
-            // even-odd
-            // .beginFill(0xff0000)
-            // .moveTo(25, 25).lineTo(60, 25).lineTo(60, 60).lineTo(25, 60).curveTo(-55, 25+35/2, 25, 25)
-            // .beginFill(0x00ff00)
-            // .moveTo(35, 35).lineTo(70, 35).curveTo(100, 52, 70, 70).lineTo(35, 70).curveTo(100, 52, 35, 35)
-            .endFill();
+        next2d.load("develop");
+        // const { Sprite, Shape } = next2d.display;
+        // const root = await next2d.createRootMovieClip(480, 480);
+        // const shape = root.addChild(new Shape());
+        // shape.x = 75;
+        // shape.y = 75;
+        // shape
+        //     .graphics
+        //     .beginFill(0x0000ff)
+        //     .moveTo(0, 0).curveTo(50, -25, 100, 0).curveTo(125, 50, 100, 100).lineTo(0, 100).curveTo(20, 50, 0, 0)
+        //     .endFill()
+        //     // non-zero
+        //     // .beginFill(0x00ff00)
+        //     .moveTo(75, 75).curveTo(170, 30, 75, 50).curveTo(50, 10, 50, 50).curveTo(95, 25+35/2, 50, 75).lineTo(75, 75)
+        //     // .endFill()
+        //     // even-odd
+        //     // .beginFill(0xff0000)
+        //     // .moveTo(25, 25).lineTo(60, 25).lineTo(60, 60).lineTo(25, 60).curveTo(-55, 25+35/2, 25, 25)
+        //     // .beginFill(0x00ff00)
+        //     // .moveTo(35, 35).lineTo(70, 35).curveTo(100, 52, 70, 70).lineTo(35, 70).curveTo(100, 52, 35, 35)
+        //     .endFill();
     });
 </script>
 </body>
diff --git a/packages/webgl/src/Shader/Fragment/FragmentShaderSourceTexture.ts b/packages/webgl/src/Shader/Fragment/FragmentShaderSourceTexture.ts
index 6dfc11ab..e6712179 100644
--- a/packages/webgl/src/Shader/Fragment/FragmentShaderSourceTexture.ts
+++ b/packages/webgl/src/Shader/Fragment/FragmentShaderSourceTexture.ts
@@ -44,19 +44,19 @@ precision mediump float;
 
 uniform sampler2D u_texture;
 
-in vec4 mul;
-in vec4 add;
+in vec4 v_mul;
+in vec4 v_add;
 in vec2 v_coord;
 out vec4 o_color;
 
 void main() {
     vec4 src = texture(u_texture, v_coord);
 
-    if (mul.x != 1.0 || mul.y != 1.0 || mul.z != 1.0 || mul.w != 1.0
-        || add.x != 0.0 || add.y != 0.0 || add.z != 0.0 || add.w != 0.0
+    if (v_mul.x != 1.0 || v_mul.y != 1.0 || v_mul.z != 1.0 || v_mul.w != 1.0
+        || v_add.x != 0.0 || v_add.y != 0.0 || v_add.z != 0.0 || v_add.w != 0.0
     ) {
         src.rgb /= max(0.0001, src.a);
-        src = clamp(src * mul + add, 0.0, 1.0);
+        src = clamp(src * v_mul + v_add, 0.0, 1.0);
         src.rgb *= src.a;
     }
     
diff --git a/packages/webgl/src/Shader/Vertex/VertexShaderSource.ts b/packages/webgl/src/Shader/Vertex/VertexShaderSource.ts
index 09e25ff6..ef0fc38c 100644
--- a/packages/webgl/src/Shader/Vertex/VertexShaderSource.ts
+++ b/packages/webgl/src/Shader/Vertex/VertexShaderSource.ts
@@ -70,13 +70,13 @@ layout (location = 5) in vec4 a_mul;
 layout (location = 6) in vec4 a_add;
 
 out vec2 v_coord;
-out vec4 mul;
-out vec4 add;
+out vec4 v_mul;
+out vec4 v_add;
 
 void main() {
     v_coord = a_vertex * a_rect.zw + a_rect.xy;
-    mul = a_mul;
-    add = a_add;
+    v_mul = a_mul;
+    v_add = a_add;
 
     vec2 position = vec2(a_vertex.x, 1.0 - a_vertex.y);
     position = position * a_size.xy;
diff --git a/packages/webgl/src/VertexArrayObject/usecase/VertexArrayObjectBindAttributeUseCase.ts b/packages/webgl/src/VertexArrayObject/usecase/VertexArrayObjectBindAttributeUseCase.ts
index f87a0c63..17996071 100644
--- a/packages/webgl/src/VertexArrayObject/usecase/VertexArrayObjectBindAttributeUseCase.ts
+++ b/packages/webgl/src/VertexArrayObject/usecase/VertexArrayObjectBindAttributeUseCase.ts
@@ -1,6 +1,9 @@
 import type { ShaderInstancedManager } from "../../Shader/ShaderInstancedManager";
 import { execute as vertexArrayObjectBindService } from "../service/VertexArrayObjectBindService";
-import { $gl } from "../../WebGLUtil";
+import {
+    $gl,
+    $upperPowerOfTwo
+} from "../../WebGLUtil";
 import {
     $instancedVertexArrayObject,
     $getAttributeBuffer,
@@ -27,7 +30,7 @@ export const execute = (shader_instanced_manager: ShaderInstancedManager): void
     if (shader_instanced_manager.attributes.length > attributeBuffer.length) {
 
         attributeBuffer = new Float32Array(
-            shader_instanced_manager.attributes.length
+            $upperPowerOfTwo(shader_instanced_manager.attributes.length)
         );
         $setAttributeBuffer(attributeBuffer);