From 3e12e79b8f433f47aa4b7d9bec624012149d2e47 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Wed, 31 Dec 2014 21:04:29 +0100
Subject: gl_hwdec_vda: refuse to work with old OpenGL versions

The way we use rectangle textures (required by VDA for no reason) works
onl in OpenGL 3.0 or higher. Below that, the shader will fail to
compile. We could add support for older OpenGL versions, but that would
be a major pain.

This normally doesn't matter; mpv itself always creates OpenGL 3.2
contexts on OSX. But it could matter if a client API user uses
vo_opengl_cb, and gives it a 2.1 context (which OSX also allows you to
create).
---
 video/out/gl_hwdec_vda.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/video/out/gl_hwdec_vda.c b/video/out/gl_hwdec_vda.c
index 50ff2db437..4264dff975 100644
--- a/video/out/gl_hwdec_vda.c
+++ b/video/out/gl_hwdec_vda.c
@@ -37,6 +37,11 @@ static bool check_hwdec(struct gl_hwdec *hw)
         return false;
     }
 
+    if (hw->gl->version < 300) {
+        MP_ERR(hw, "need >= OpenGL 3.0 for core rectangle texture support\n");
+        return false;
+    }
+
     if (!CGLGetCurrentContext()) {
         MP_ERR(hw, "need cocoa opengl backend to be active");
         return false;
-- 
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