From 2ec9e6558a2263c6033695c2ef3c09bb403b0472 Mon Sep 17 00:00:00 2001
From: Brian Cabral <bkc@fb.com>
Date: Mon, 9 Mar 2020 08:17:39 -0700
Subject: [PATCH] Only hint at EGL if we're using it.

Summary: Fixes a latent bug. "EGL" hints to glfw should only be done if we're using EGL.

Reviewed By: aparrapo

Differential Revision: D20323563

fbshipit-source-id: 87d5845a31f46fc40d949a0363758f92e6e2b98d
---
 source/gpu/GlfwUtil.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/source/gpu/GlfwUtil.h b/source/gpu/GlfwUtil.h
index 60fbd6f..4bb513a 100644
--- a/source/gpu/GlfwUtil.h
+++ b/source/gpu/GlfwUtil.h
@@ -345,8 +345,11 @@ class GlWindow {
     glfwWindowHint(GLFW_GREEN_BITS, outputBPP);
     glfwWindowHint(GLFW_BLUE_BITS, outputBPP);
 
-#ifdef __linux__
-    glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_EGL_CONTEXT_API);
+#ifdef USE_EGL_
+    // Only use EGL for offscreen rendering.
+    if (screenState & OFF_SCREEN) {
+      glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_EGL_CONTEXT_API);
+    }
 #endif
 
     window = glfwCreateWindow(width, height, name.c_str(), NULL, NULL);