From a8ffa0d0ebca8e502c4dafb6ea5011e17c978b1a Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Tue, 23 Dec 2014 02:46:44 +0100
Subject: vo_opengl: make use of newer OpenGL logging API

GL_ARB_debug_output provides a logging callback, which can be used to
diagnose problems etc. in case the driver supports it. It's enabled only
if the vo_opengl "debug" suboption is set.
---
 video/out/gl_common.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'video/out/gl_common.c')

diff --git a/video/out/gl_common.c b/video/out/gl_common.c
index a94ad1fc75..cfae5cc39f 100644
--- a/video/out/gl_common.c
+++ b/video/out/gl_common.c
@@ -107,6 +107,7 @@ static const struct feature features[] = {
     {MPGL_CAP_TEX_RG,           "RG textures"},
     {MPGL_CAP_1ST_CLASS_ARRAYS, "1st class shader arrays"},
     {MPGL_CAP_3D_TEX,           "3D textures"},
+    {MPGL_CAP_DEBUG,            "debugging extensions"},
     {MPGL_CAP_SW,               "suspected software renderer"},
     {0},
 };
@@ -462,6 +463,16 @@ static const struct gl_functions gl_functions[] = {
         .extension = "GL_APPLE_rgb_422",
         .provides = MPGL_CAP_APPLE_RGB_422,
     },
+    {
+        .ver_core = 430,
+        .extension = "GL_ARB_debug_output",
+        .provides = MPGL_CAP_DEBUG,
+        .functions = (const struct gl_function[]) {
+            // (only functions needed by us)
+            DEF_FN(DebugMessageCallback),
+            {0}
+        },
+    },
 };
 
 #undef FN_OFFS
@@ -972,6 +983,8 @@ MPGLContext *mpgl_init(struct vo *vo, const char *backend_name,
             goto cleanup;
     }
 
+    ctx->gl->debug_context = !!(vo_flags & VOFLAG_GL_DEBUG);
+
     return ctx;
 
 cleanup:
-- 
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