From 6d576a3e55c5c240b7b8290e8d00c7f6823c2d03 Mon Sep 17 00:00:00 2001
From: itsmattkc <34096995+itsmattkc@users.noreply.github.com>
Date: Mon, 6 Sep 2021 11:01:07 -0700
Subject: [PATCH] opengl: use desktop header on mac

Fixes #1741
---
 app/render/opengl/openglrenderer.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/app/render/opengl/openglrenderer.cpp b/app/render/opengl/openglrenderer.cpp
index 2b8392514..dc8da16cd 100644
--- a/app/render/opengl/openglrenderer.cpp
+++ b/app/render/opengl/openglrenderer.cpp
@@ -869,8 +869,15 @@ GLuint OpenGLRenderer::GetCachedTexture(int width, int height, int depth, VideoP
 
 GLuint OpenGLRenderer::CompileShader(GLenum type, const QString &code)
 {
-  static const QString shader_preamble = QStringLiteral("#version 100\n\n"
-                                                        "precision highp float;\n\n");
+  static const QString shader_preamble =
+#ifndef Q_OS_MAC
+      // Use appropriate GL ES 2.0 shader header
+      QStringLiteral("#version 100\n\n"
+                     "precision highp float;\n\n");
+#else
+      // Use desktop GL equivalent header because apparently macOS doesn't support the ES header
+      QStringLiteral("#version 120\n\n");
+#endif
 
   QString complete_code = shader_preamble;