gboolean
gst_gl_context_supports_glsl_profile_version (GstGLContext * context,
GstGLSLVersion version, GstGLSLProfile profile)
{
g_return_val_if_fail (GST_IS_GL_CONTEXT (context), FALSE);
if (!_is_valid_version_profile (version, profile))
return FALSE;
if (profile != GST_GLSL_PROFILE_NONE) {
if (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0)) {
if ((profile & GST_GLSL_PROFILE_ES) == 0)
return FALSE;
} else if ((gst_gl_context_get_gl_api (context) & GST_GL_API_OPENGL) != 0) {
if ((profile & GST_GLSL_PROFILE_COMPATIBILITY) == 0)
return FALSE;
} else if ((gst_gl_context_get_gl_api (context) & GST_GL_API_OPENGL3) != 0) {
/* GL_ARB_es2_compatibility is requried for GL3 contexts */
if ((profile & (GST_GLSL_PROFILE_CORE | GST_GLSL_PROFILE_ES)) == 0)
return FALSE;
} else {
g_assert_not_reached ();
}
}
if (version != GST_GLSL_VERSION_NONE) {
GstGLAPI gl_api;
gint maj, min, glsl_version;
if (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 1)) {
if (version > GST_GLSL_VERSION_310)
return FALSE;
} else if (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3,
0)) {
if (version > GST_GLSL_VERSION_300)
return FALSE;
} else if (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2,
0)) {
if (version > GST_GLSL_VERSION_100)
return FALSE;
}
gl_api = gst_gl_context_get_gl_api (context);
gst_gl_context_get_gl_version (context, &maj, &min);
glsl_version = gst_gl_version_to_glsl_version (gl_api, maj, min);
if (glsl_version > version)
return FALSE;
if (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 1, 0))
/* GL_ARB_es2_compatibility is requried for GL3 contexts */
if (version < GST_GLSL_VERSION_150 && version != GST_GLSL_VERSION_100)
return FALSE;
if (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0)
&& version < GST_GLSL_VERSION_110)
return FALSE;
}
return TRUE;
}
gchar *
gst_glsl_version_profile_to_string (GstGLSLVersion version,
GstGLSLProfile profile)
{
const gchar *version_s, *profile_s;
if (!_is_valid_version_profile (version, profile))
return NULL;
version_s = gst_glsl_version_to_string (version);
/* no profiles in GL/ES <= 150 */
if (version <= GST_GLSL_VERSION_150)
profile_s = NULL;
else
profile_s = gst_glsl_profile_to_string (profile);
if (!version_s)
return NULL;
if (profile_s)
return g_strdup_printf ("%s %s", version_s, profile_s);
return g_strdup (version_s);
}
gboolean
gst_glsl_version_profile_from_string (const gchar * string,
GstGLSLVersion * version_ret, GstGLSLProfile * profile_ret)
{
gchar *str, *version_s, *profile_s;
GstGLSLVersion version;
GstGLSLProfile profile;
gint i;
if (!string)
goto error;
str = g_strdup (string);
version_s = g_strstrip (str);
/* skip possible #version prefix */
if (str[0] == '#') {
if (!(version_s =
(gchar *) _check_valid_version_preprocessor_string (version_s)))
goto error;
}
version_s = g_strstrip (version_s);
i = 0;
while (version_s && version_s[i] != '\0' && g_ascii_isdigit (version_s[i]))
i++;
/* wrong version length */
if (i != 3) {
g_free (str);
goto error;
}
version_s[i] = '\0';
i++;
profile_s = &version_s[i];
profile_s = g_strstrip (profile_s);
profile = gst_glsl_profile_from_string (profile_s);
version = gst_glsl_version_from_string (version_s);
g_free (str);
/* check whether the parsed data is valid */
if (!version)
goto error;
if (!_is_valid_version_profile (version, profile))
goto error;
/* got a profile when none was expected */
if (version <= GST_GLSL_VERSION_150 && profile != GST_GLSL_PROFILE_NONE)
goto error;
_fixup_version_profile (&version, &profile);
if (profile_ret)
*profile_ret = profile;
if (version_ret)
*version_ret = version;
return TRUE;
error:
{
if (profile_ret)
*profile_ret = GST_GLSL_PROFILE_NONE;
if (version_ret)
*version_ret = GST_GLSL_VERSION_NONE;
return FALSE;
}
}
gboolean
gst_glsl_version_profile_from_string (const gchar * string,
GstGLSLVersion * version_ret, GstGLSLProfile * profile_ret)
{
gchar *str, *version_s, *profile_s;
GstGLSLVersion version = GST_GLSL_VERSION_NONE;
GstGLSLProfile profile = GST_GLSL_PROFILE_NONE;
gint i;
_init_debug ();
if (!string)
goto error;
str = g_strdup (string);
version_s = g_strstrip (str);
/* skip possible #version prefix */
if (str[0] == '#') {
if (!(version_s =
(gchar *) _check_valid_version_preprocessor_string (version_s))) {
GST_WARNING ("Invalid preprocesser directive detected: %s", version_s);
g_free (str);
goto error;
}
}
version_s = g_strstrip (version_s);
i = 0;
while (version_s && version_s[i] != '\0' && g_ascii_isdigit (version_s[i]))
i++;
/* wrong version length */
if (i != 3) {
GST_WARNING ("version number has the wrong number of digits: %s",
version_s);
g_free (str);
goto error;
}
if (version_s[i] != 0) {
version_s[i] = '\0';
i++;
profile_s = &version_s[i];
profile_s = g_strstrip (profile_s);
profile = gst_glsl_profile_from_string (profile_s);
}
version = gst_glsl_version_from_string (version_s);
g_free (str);
/* check whether the parsed data is valid */
if (!version) {
GST_WARNING ("Could not map the version number to a valid GLSL version:");
goto error;
}
if (!_is_valid_version_profile (version, profile)) {
GST_WARNING ("Invalid version/profile combination specified: %s %s",
gst_glsl_version_to_string (version),
gst_glsl_profile_to_string (profile));
goto error;
}
/* got a profile when none was expected */
if (version <= GST_GLSL_VERSION_140 && profile != GST_GLSL_PROFILE_NONE) {
GST_WARNING
("Found a profile (%s) with a version (%s) that does not support "
"profiles", gst_glsl_version_to_string (version),
gst_glsl_profile_to_string (profile));
goto error;
}
_fixup_version_profile (&version, &profile);
if (profile_ret)
*profile_ret = profile;
if (version_ret)
*version_ret = version;
return TRUE;
error:
{
if (profile_ret)
*profile_ret = GST_GLSL_PROFILE_NONE;
if (version_ret)
*version_ret = GST_GLSL_VERSION_NONE;
return FALSE;
}
}
