From 15c2fe01c029d19da2996678145bee5d1831f05e Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sat, 3 Dec 2022 04:37:18 +0900
Subject: [PATCH] internal/glfwwin: bug fix: unexpected error at
 wglSwapIntervalEXT

Updates #2478
---
 internal/glfwwin/api_windows.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/internal/glfwwin/api_windows.go b/internal/glfwwin/api_windows.go
index ec6e79453..ea81b6f2d 100644
--- a/internal/glfwwin/api_windows.go
+++ b/internal/glfwwin/api_windows.go
@@ -1856,7 +1856,8 @@ func wglShareLists(unnamedParam1 _HGLRC, unnamedParam2 _HGLRC) error {
 
 func wglSwapIntervalEXT(interval int32) error {
 	r, _, e := syscall.Syscall(procWGLSwapIntervalEXT, 1, uintptr(interval), 0, 0)
-	if int32(r) == 0 {
+	// wglSwapIntervalEXT can return ERROR_SUCCESS (#2478).
+	if int32(r) == 0 && !errors.Is(e, windows.ERROR_SUCCESS) {
 		return fmt.Errorf("glfwwin: wglSwapIntervalEXT failed: %w", e)
 	}
 	return nil