shader实现一个图片波纹效果可以正常显示，但是预览的时候控制台报错

[lliichen1 (chelios)]

// Copyright © 2017-2020 Xiamen Yaji Software Co., Ltd.
CCEffect %{
techniques:

• passes:
  • vert: sprite-vs:vert
    frag: sprite-fs:frag
    depthStencilState:
    depthTest: false
    depthWrite: false
    blendState:
    targets:
    • blend: true
      blendSrc: src_alpha
      blendDst: one_minus_src_alpha
      blendDstAlpha: one_minus_src_alpha
      rasterizerState:
      cullMode: none
      properties:
      alphaThreshold: { value: 0.5 }
      }%

CCProgram sprite-vs %{
precision highp float;
#include
#if USE_LOCAL
#include
#endif
#if SAMPLE_FROM_RT
#include
#endif
in vec3 a_position;
in vec2 a_texCoord;
in vec4 a_color;

out vec4 color;
out vec2 uv0;

vec4 vert () {
vec4 pos = vec4(a_position, 1);

#if USE_LOCAL
  pos = cc_matWorld * pos;
#endif

#if USE_PIXEL_ALIGNMENT
  pos = cc_matView * pos;
  pos.xyz = floor(pos.xyz);
  pos = cc_matProj * pos;
#else
  pos = cc_matViewProj * pos;
#endif

uv0 = a_texCoord;
#if SAMPLE_FROM_RT
  CC_HANDLE_RT_SAMPLE_FLIP(uv0);
#endif
color = a_color;

return pos;

}
}%

CCProgram sprite-fs %{
precision highp float;
#include
#include
#include

in vec4 color;

#if USE_TEXTURE
in vec2 uv0;
#pragma builtin(local)
layout(set = 2, binding = 10) uniform sampler2D cc_spriteTexture;
#endif

vec4 frag () {
vec4 o = vec4(1, 1, 1, 1);

vec2 uv = uv0.xy;
uv += vec2(0.,0.05 * cos(uv.x * 10. + cc_time.x * 3.));

#if USE_TEXTURE
  o *= CCSampleWithAlphaSeparated(cc_spriteTexture, uv);
  #if IS_GRAY
    float gray  = 0.2126 * o.r + 0.7152 * o.g + 0.0722 * o.b;
    o.r = o.g = o.b = gray;
  #endif
#endif


o *= color;


ALPHA_TEST(o);
return o;

}
}%