From aac74b7c367feba4329f475c4b4f22ea7c4679d9 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Fri, 3 Nov 2017 11:39:15 +0100
Subject: vo_gpu: ra_gl: fix crash trying to use glBindBufferBase on GL 2.1

Apparently this is required, but it doesn't check for it. To be fair,
this was tested by creating a compatibility context and pretending it's
GL 2.1. GL_ARB_shader_storage_buffer_object actually requires GL 4.0 or
up, but GL_ARB_uniform_buffer_object requires only GL 2.0.
---
 video/out/opengl/ra_gl.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/video/out/opengl/ra_gl.c b/video/out/opengl/ra_gl.c
index ccb8755ba6..ae6cd00765 100644
--- a/video/out/opengl/ra_gl.c
+++ b/video/out/opengl/ra_gl.c
@@ -102,8 +102,6 @@ static int ra_init_gl(struct ra *ra, GL *gl)
         {RA_CAP_TEX_3D,             MPGL_CAP_3D_TEX},
         {RA_CAP_COMPUTE,            MPGL_CAP_COMPUTE_SHADER},
         {RA_CAP_NESTED_ARRAY,       MPGL_CAP_NESTED_ARRAY},
-        {RA_CAP_BUF_RO,             MPGL_CAP_UBO},
-        {RA_CAP_BUF_RW,             MPGL_CAP_SSBO},
     };
 
     for (int i = 0; i < MP_ARRAY_SIZE(caps_map); i++) {
@@ -111,6 +109,13 @@ static int ra_init_gl(struct ra *ra, GL *gl)
             ra->caps |= caps_map[i][0];
     }
 
+    if (gl->BindBufferBase) {
+        if (gl->mpgl_caps & MPGL_CAP_UBO)
+            ra->caps |= RA_CAP_BUF_RO;
+        if (gl->mpgl_caps & MPGL_CAP_SSBO)
+            ra->caps |= RA_CAP_BUF_RW;
+    }
+
     if (gl->BlitFramebuffer)
         ra->caps |= RA_CAP_BLIT;
 
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