我需要做什么才能让这个OpenGL超炫的顶点着色器在OS X上编译？

最近发布了OpenGL Superbible 5th Edition，它记录了OpenGL 3.3。不幸的是，OS X只支持OpenGL 2.1和GLSL 1.20版本。他们给你的第一个不平凡的顶点着色器失败，出现错误消息编译：我需要做什么才能让这个OpenGL超炫的顶点着色器在OS X上编译？

ERROR: 0:5: '' : Version number not supported by GL2 
ERROR: 0:8: 'in' : syntax error syntax error

的，书面的着色器：

// Simple Diffuse lighting Shader 
// Vertex Shader 
// Richard S. Wright Jr. 
// OpenGL SuperBible 
#version 130 

// Incoming per vertex... position and normal 
in vec4 vVertex; 
in vec3 vNormal; 

// Set per batch 
uniform vec4 diffuseColor; 
uniform vec3 vLightPosition; 
uniform mat4 mvpMatrix; 
uniform mat4 mvMatrix; 
uniform mat3 normalMatrix; 

// Color to fragment program 
smooth out vec4 vVaryingColor; 

void main(void) 
    { 
    // Get surface normal in eye coordinates 
    vec3 vEyeNormal = normalMatrix * vNormal; 

    // Get vertex position in eye coordinates 
    vec4 vPosition4 = mvMatrix * vVertex; 
    vec3 vPosition3 = vPosition4.xyz/vPosition4.w; 

    // Get vector to light source 
    vec3 vLightDir = normalize(vLightPosition - vPosition3); 

    // Dot product gives us diffuse intensity 
    float diff = max(0.0, dot(vEyeNormal, vLightDir)); 

    // Multiply intensity by diffuse color 
    vVaryingColor.rgb = diff * diffuseColor.rgb; 
    vVaryingColor.a = diffuseColor.a; 

    // Let's not forget to transform the geometry 
    gl_Position = mvpMatrix * vVertex; 
    }

来源

2010-08-23 Michael Labbé