GLSL传递数组

static const char *microshaderFragSource = {
    "varying vec4 color;
"
    "uniform bool test1=true;
"
    "uniform float test2=15.0;
"
    "uniform float gauss_num[10];
"
    "void main(void)
"
    "{
"
    "        if(test1)
"
    "    gl_FragColor = clamp( color, 0.0, 1.0 );
"
    "        else
"
    "    gl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );
"
    "}
"
};

// 数组类型的uniform,数组大小必须与.glsl中的数组大小保持一致
    osg::FloatArray* g_GaussNum = new osg::FloatArray(10);
    osg::Uniform* gauss_num = new osg::Uniform(osg::Uniform::FLOAT, "gauss_num", g_GaussNum->size());
    gauss_num->setArray(g_GaussNum);
//如果是vec2类型的数组，使用FLOAT_VEC2，setElement循环设置每一个元素

    // 给uniform添加一个回调
    osg::Uniform* OffsetUniform = new osg::Uniform("Offset", osg::Vec3(0.0f, 0.0f, 0.0f));
    OffsetUniform->setUpdateCallback(new AnimateCallback());
    ss->addUniform(OffsetUniform);