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glcontext: require a shader version to initialize.

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It's very near pointless to try our GL implementation without shaders.

https://bugzilla.gnome.org/show_bug.cgi?id=749284
This commit is contained in:
Matthew Waters 2015-05-21 15:05:33 +10:00
parent cdff13e07b
commit e9f0d0fb51
1 changed files with 2 additions and 1 deletions
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3
gst-libs/gst/gl/gstglcontext.c
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@ -1101,7 +1101,8 @@ _create_context_info (GstGLContext * context, GstGLAPI gl_api, gint * gl_major,
gl = context->gl_vtable;
if (!gl->GetString || !gl->GetString (GL_VERSION)) {
if (!gl->GetString || !gl->GetString (GL_VERSION)
|| !gl->GetString (GL_SHADING_LANGUAGE_VERSION)) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"glGetString not defined or returned invalid value");
return FALSE;