-#ifndef IS_REQUIRED_ROUNDED_CORNER
-#define IS_REQUIRED_ROUNDED_CORNER 0
-#endif
-#ifndef IS_REQUIRED_BORDERLINE
-#define IS_REQUIRED_BORDERLINE 0
-#endif
-#ifndef IS_REQUIRED_ALPHA_MASKING
-#define IS_REQUIRED_ALPHA_MASKING 0
-#endif
-
INPUT mediump vec2 aPosition;
OUTPUT mediump vec2 vTexCoord;
-#if IS_REQUIRED_ROUNDED_CORNER || IS_REQUIRED_BORDERLINE
+#if defined(IS_REQUIRED_ROUNDED_CORNER) || defined(IS_REQUIRED_BORDERLINE)
OUTPUT mediump vec2 vPosition;
OUTPUT mediump vec2 vRectSize;
OUTPUT mediump vec2 vOptRectSize;
-#if IS_REQUIRED_ROUNDED_CORNER
+#ifdef IS_REQUIRED_ROUNDED_CORNER
OUTPUT mediump vec4 vCornerRadius;
#endif
#endif
uniform mediump vec4 offsetSizeMode;
uniform mediump vec2 origin;
uniform mediump vec2 anchorPoint;
-#if IS_REQUIRED_BORDERLINE
+#ifdef IS_REQUIRED_BORDERLINE
uniform mediump float borderlineWidth;
uniform mediump float borderlineOffset;
#endif
-#if IS_REQUIRED_ROUNDED_CORNER
+#ifdef IS_REQUIRED_ROUNDED_CORNER
uniform mediump vec4 cornerRadius;
uniform mediump float cornerRadiusPolicy;
#endif
-#if IS_REQUIRED_ALPHA_MASKING
+#ifdef IS_REQUIRED_ALPHA_MASKING
OUTPUT mediump vec2 vMaskTexCoord;
uniform lowp float cropToMask;
uniform mediump vec2 maskTextureRatio;
vec2 visualSize = mix(uSize.xy * size, size, offsetSizeMode.zw) + extraSize;
vec2 visualOffset = mix(offset, offset/uSize.xy, offsetSizeMode.xy);
-#if IS_REQUIRED_ROUNDED_CORNER || IS_REQUIRED_BORDERLINE
+#if defined(IS_REQUIRED_ROUNDED_CORNER) || defined(IS_REQUIRED_BORDERLINE)
vRectSize = visualSize * 0.5;
vOptRectSize = vRectSize;
#endif
-#if IS_REQUIRED_ROUNDED_CORNER
-#if IS_REQUIRED_BORDERLINE
+#ifdef IS_REQUIRED_ROUNDED_CORNER
+#ifdef IS_REQUIRED_BORDERLINE
mediump float minSize = min(visualSize.x, visualSize.y) + (1.0 + clamp(borderlineOffset, -1.0, 1.0)) * borderlineWidth;
#else
mediump float minSize = min(visualSize.x, visualSize.y);
vOptRectSize -= 0.2929 * maxRadius + 1.0;
#endif
-#if IS_REQUIRED_BORDERLINE
+#ifdef IS_REQUIRED_BORDERLINE
vPosition = aPosition * (visualSize + (1.0 + clamp(borderlineOffset, -1.0, 1.0)) * borderlineWidth);
vOptRectSize -= (1.0 - clamp(borderlineOffset, -1.0, 1.0)) * 0.5 * borderlineWidth + 1.0;
-#elif IS_REQUIRED_ROUNDED_CORNER
+#elif defined(IS_REQUIRED_ROUNDED_CORNER)
vPosition = aPosition * visualSize;
#else
mediump vec2 vPosition = aPosition * visualSize;
#endif
vec4 finalPixelArea = pixelArea;
-#if IS_REQUIRED_ALPHA_MASKING
+#ifdef IS_REQUIRED_ALPHA_MASKING
finalPixelArea = mix(pixelArea,
vec4(
vec2(0.5) + (pixelArea.xy - vec2(0.5)) * maskTextureRatio,