在glsl 3.3中将浮点数组从顶点着色器传递到片段着色器

我试图通过

out float texture_contribs[16]

使用glsl 3.3从顶点着色器到框架着色器

但是，无论顶点着色器中的值如何，帧着色器中的值始终为0.0。

这是我的顶点着色器代码：

uniform mat4 projectionMatrix;
uniform mat4 viewMatrix;
uniform mat4 modelMatrix;
uniform mat4 normalMatrix;

layout(location = 0) in vec4 in_position;
layout(location = 1) in vec4 in_colour;
layout(location = 2) in vec2 in_coord;
layout(location = 3) in vec3 in_normal;
layout(location = 4) in float texture_contributions[16];

out vec2 texcoord;
out vec4 pass_colour;
out float texture_contribs[16];

smooth out vec3 vNormal;

void main()
{
    gl_Position = projectionMatrix * viewMatrix * modelMatrix * in_position;
    texcoord = in_coord;
    vec4 vRes = normalMatrix*vec4(in_normal, 0.0); 
    vNormal = vRes.xyz;
    pass_colour = in_colour;
    for (int i = 0; i < 16; i++)
    {
        texture_contribs[i] = texture_contributions[i];
    }
}

这是片段着色器代码：

uniform sampler2D texture[16];

in vec2 texcoord;
in vec4 pass_colour;
in float texture_contribs[16];

smooth in vec3 vNormal;

out vec4 out_colour;

struct SimpleDirectionalLight
{
   vec3 vColor;
   vec3 vDirection;
   float fAmbientIntensity;
};

uniform SimpleDirectionalLight sunLight;

void main()
{
    vec4 vTexColor = texture2D(texture[2], texcoord) * texture_contribs[2] + texture2D(texture[3], texcoord) * texture_contribs[3];
    if(vTexColor.a < 0.1)
        discard;
    float fDiffuseIntensity = max(0.0, dot(normalize(vNormal), -sunLight.vDirection));
    out_colour = vTexColor*pass_colour*vec4(sunLight.vColor*(sunLight.fAmbientIntensity+fDiffuseIntensity), 1.0);
}

我尝试将数组拆分为单独的变量，然后分别传递它们，它们的值仍在片段着色器中消失。