mutter/src/backends/meta-gles3.c
Daniel van Vugt 89b254a74b gles3: Ensure missing_extensions is always populated
This appears to be the only explanation for `init_secondary_gpu_data_gpu`
crashing in `g_strjoinv`, but I don't know the exact conditions causing
`glGetString (GL_EXTENSIONS)` to return NULL.

https://launchpad.net/bugs/1994011

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2674>
2023-01-18 10:14:39 +00:00

164 lines
3.8 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2017 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include <stdio.h>
#include "config.h"
#include "backends/meta-gles3.h"
#include <dlfcn.h>
#include <gio/gio.h>
#include "backends/meta-gles3-table.h"
struct _MetaGles3
{
GObject parent;
MetaEgl *egl;
MetaGles3Table table;
};
G_DEFINE_TYPE (MetaGles3, meta_gles3, G_TYPE_OBJECT)
MetaGles3Table *
meta_gles3_get_table (MetaGles3 *gles3)
{
return &gles3->table;
}
void
meta_gles3_ensure_loaded (MetaGles3 *gles3,
gpointer *func,
const char *name)
{
GError *error = NULL;
if (*func)
return;
*func = meta_egl_get_proc_address (gles3->egl, name, &error);
if (!*func)
g_error ("Failed to load GLES3 symbol: %s", error->message);
}
static const char *
get_gl_error_str (GLenum gl_error)
{
switch (gl_error)
{
case GL_NO_ERROR:
return "No error has been recorded.";
case GL_INVALID_ENUM:
return "An unacceptable value is specified for an enumerated argument.";
case GL_INVALID_VALUE:
return "A numeric argument is out of range.";
case GL_INVALID_OPERATION:
return "The specified operation is not allowed in the current state.";
case GL_INVALID_FRAMEBUFFER_OPERATION:
return "The framebuffer object is not complete.";
case GL_OUT_OF_MEMORY:
return "There is not enough memory left to execute the command.";
default:
return "Unknown error";
}
}
void
meta_gles3_clear_error (MetaGles3 *gles3)
{
while (TRUE)
{
GLenum gl_error = glGetError ();
if (gl_error == GL_NO_ERROR)
break;
}
}
gboolean
meta_gles3_validate (MetaGles3 *gles3,
GError **error)
{
GLenum gl_error;
gl_error = glGetError ();
if (gl_error != GL_NO_ERROR)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
get_gl_error_str (gl_error));
return FALSE;
}
return TRUE;
}
gboolean
meta_gles3_has_extensions (MetaGles3 *gles3,
const char ***missing_extensions,
const char *first_extension,
...)
{
va_list var_args;
const char *extensions_str;
gboolean has_extensions;
extensions_str = (const char *) glGetString (GL_EXTENSIONS);
if (!extensions_str)
{
g_warning ("Failed to get string: %s", get_gl_error_str (glGetError ()));
extensions_str = "";
}
va_start (var_args, first_extension);
has_extensions =
meta_extensions_string_has_extensions_valist (extensions_str,
missing_extensions,
first_extension,
var_args);
va_end (var_args);
return has_extensions;
}
MetaGles3 *
meta_gles3_new (MetaEgl *egl)
{
MetaGles3 *gles3;
gles3 = g_object_new (META_TYPE_GLES3, NULL);
gles3->egl = egl;
return gles3;
}
static void
meta_gles3_init (MetaGles3 *gles3)
{
}
static void
meta_gles3_class_init (MetaGles3Class *klass)
{
}