CODEWITHSUNDEEP
chaskellopenglglfw
Ace shinigami
Ace shinigami

Reputation: 1484

unable to create window with OpenGL 3.3 context macOS with GLFW installed through brew

I am unable to create GLFW windows with versions past 2.1 after install glfw through brew using the command brew install glfw.

basically my problem is that this code works:

import qualified Graphics.UI.GLFW as GLFW

configAndCreateWindow :: IO (Maybe GLFW.Window)
configAndCreateWindow = do              
    GLFW.windowHint (GLFW.WindowHint'ContextVersionMajor 2)
    GLFW.windowHint (GLFW.WindowHint'ContextVersionMinor 1)
    GLFW.createWindow 100 100 "test" Nothing Nothing

main :: IO ()
main = do
    GLFW.init
    maybeWindow <- configAndCreateWindow
    case maybeWindow of
        Nothing -> putStrLn "Failure :("
        Just _ -> putStrLn "Success!"

but if I change

GLFW.windowHint (GLFW.WindowHint'ContextVersionMajor 2)
GLFW.windowHint (GLFW.WindowHint'ContextVersionMinor 1)

to

GLFW.windowHint (GLFW.WindowHint'ContextVersionMajor 3)
GLFW.windowHint (GLFW.WindowHint'ContextVersionMinor 3)

it breaks.

Just to make sure it didn't have to do with GLFW-b I also wrote a c program:

#define GLFW_INCLUDE_GL_3
#include <GLFW/glfw3.h>
#include <stdio.h>

int main ()
{
    glfwInit();

    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);

    GLFWwindow* window = glfwCreateWindow(800, 600, "GLFW test", NULL, NULL);
    if (window == NULL) {
        printf("Success!");
    } else {
        printf("Failure :(");
    }
}

and if I change context version number it works just like with the Haskell example.

Upvotes: 2

Views: 1548

Answers (1)

BDL
BDL

Reputation: 22167

When requesting an OpenGL context on MacOS, two additional flags have to be set:

glfwWindowHint (GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
glfwWindowHint (GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

Upvotes: 5

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