如何在Mac OS上的Go(Lion-10.8)中创建OpenGL 3.2上下文

如何在Mac OS上的Go(Lion-10.8)中创建OpenGL 3.2上下文

问题描述:

I'm trying to write an OpenGL application in Go on MacOS, and can't figure out how to create a context with a version higher than OpenGL 2.1

I've tried using multiple OpenGL bindings out there, but settled on github.com/go-gl/gl

The below example will output 2.1 NVIDIA-8.12.47 310.40.00.05f01. What do I need to do to create an OpenGL 3.2 context?

package main

import (
    "fmt"
    "github.com/go-gl/gl"
    glfw "github.com/go-gl/glfw3"
)
func main() {
    //request 3.2 context
    glfw.WindowHint(glfw.ContextVersionMajor, 3)
    glfw.WindowHint(glfw.ContextVersionMinor, 2)
    glfw.WindowHint(glfw.OpenglProfile, glfw.OpenglCoreProfile)
    if !glfw.Init() {
        panic("glfw init failed")
    }
    defer glfw.Terminate()

    //create and set window context
    window, err := glfw.CreateWindow(64, 64, "foo", nil, nil)
    if err != nil {
        panic(err)
    }
    window.MakeContextCurrent()

    //check version
    version := gl.GetString(gl.VERSION)
    fmt.Println(version)
}

我试图在Mac OS上的Go语言中编写OpenGL应用程序,但无法弄清楚如何创建 版本高于 OpenGL 2.1 strong> p>

的上下文我曾尝试使用多个OpenGL绑定,但最终选择了 github.com/go-gl / gl strong> p>

以下示例将输出 2.1 NVIDIA-8.12.47 310.40.00.05f01 code>。 创建OpenGL 3.2上下文需要做什么? p>

 包main 
 
import(
“ fmt” 
“ github.com/go-gl/  gl“ 
 glfw” github.com/go-gl/glfw3"
)
func main(){
 //请求3.2上下文
 glfw.WindowHint(glfw.ContextVersionMajor,3)
 glfw.WindowHint(  glfw.ContextVersionMinor,2)
 glfw.WindowHint(glfw.OpenglProfile,glfw.OpenglCoreProfile)
如果!glfw.Init(){
 panic(“ glfw init failed”)
} 
延迟glfw.Terminate(  )
 
 //创建并设置窗口上下文
 window,err:= glfw.CreateWindow(64,64,“ foo”,nil,nil)
如果err!= nil {
 panic(err)\  n} 
 window.MakeContextCurrent()
 
 //检查版本
版本:= gl.GetString(gl.VERSION)
 fmt.Println(version)
} 
  code>  pre  > 
  div>

Since this is a C library wrapper, you might also need the equivalent of:

glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);

on OS X. But, more importantly, you should call glfwInit (or it's equivalent glfw.Init) prior to calling any other GLFW3 function. AFAIK, only glfwSetErrorCallback can be used prior to this call.