From 198d3cb78d9f9432e1d829f44aec46ec7971c24d Mon Sep 17 00:00:00 2001
From: Kirill Chibisov <contact@kchibisov.com>
Date: Sat, 14 Nov 2020 21:48:24 +0300
Subject: [PATCH] Load only gl 3.3 functions

This commit makes 'gl::load_with' only load
symbols from the minimal OpenGL (3.3) version alacritty
aims to support. Doing so reduces the size of gl_bindings.rs
from 21K LoC to 11K LoC, and also the actual
loading by up to ~2x, thugh the loading is usually sub millisecond
anyway.
---
 alacritty/build.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/alacritty/build.rs b/alacritty/build.rs
index 3c0ec110..0d4a0560 100644
--- a/alacritty/build.rs
+++ b/alacritty/build.rs
@@ -1,3 +1,4 @@
+use std::collections::HashSet;
 use std::env;
 use std::fs::File;
 use std::path::Path;
@@ -11,7 +12,7 @@ fn main() {
     let dest = env::var("OUT_DIR").unwrap();
     let mut file = File::create(&Path::new(&dest).join("gl_bindings.rs")).unwrap();
 
-    Registry::new(Api::Gl, (4, 5), Profile::Core, Fallbacks::All, ["GL_ARB_blend_func_extended"])
+    Registry::new(Api::Gl, (3, 3), Profile::Core, Fallbacks::All, ["GL_ARB_blend_func_extended"])
         .write_bindings(GlobalGenerator, &mut file)
         .unwrap();