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main/extensions: Create extra extensions override string

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This will allow us to utilize the early MESA_EXTENSION_OVERRIDE
parsing at the later extension string initialization step.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
This commit is contained in:
Jordan Justen 2014-06-08 13:26:11 -07:00
parent 10e03b4401
commit 863f57ee1b
1 changed files with 38 additions and 0 deletions
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38
src/mesa/main/extensions.c
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@ -39,6 +39,7 @@
struct gl_extensions _mesa_extension_override_enables;
struct gl_extensions _mesa_extension_override_disables;
static char *extra_extensions = NULL;
enum {
DISABLE = 0,
@ -590,6 +591,19 @@ get_extension_override( struct gl_context *ctx )
}
/**
* \brief Free extra_extensions string
*
* This string is allocated early during the first context creation by
* _mesa_one_time_init_extension_overrides.
*/
static void
free_unknown_extensions_strings(void)
{
free(extra_extensions);
}
/**
* \brief Initialize extension override tables.
*
@ -601,8 +615,11 @@ _mesa_one_time_init_extension_overrides(void)
const char *env_const = _mesa_getenv("MESA_EXTENSION_OVERRIDE");
char *env;
char *ext;
int len;
size_t offset;
atexit(free_unknown_extensions_strings);
memset(&_mesa_extension_override_enables, 0, sizeof(struct gl_extensions));
memset(&_mesa_extension_override_disables, 0, sizeof(struct gl_extensions));
@ -610,10 +627,14 @@ _mesa_one_time_init_extension_overrides(void)
return;
}
/* extra_exts: List of unrecognized extensions. */
extra_extensions = calloc(ALIGN(strlen(env_const) + 2, 4), sizeof(char));
/* Copy env_const because strtok() is destructive. */
env = strdup(env_const);
for (ext = strtok(env, " "); ext != NULL; ext = strtok(NULL, " ")) {
int enable;
bool recognized;
switch (ext[0]) {
case '+':
enable = 1;
@ -631,10 +652,27 @@ _mesa_one_time_init_extension_overrides(void)
offset = set_extension(&_mesa_extension_override_enables, ext, enable);
if (offset != 0 && (offset != o(dummy_true) || enable != GL_FALSE)) {
((GLboolean *) &_mesa_extension_override_disables)[offset] = !enable;
recognized = true;
} else {
recognized = false;
}
if (!recognized && enable) {
strcat(extra_extensions, ext);
strcat(extra_extensions, " ");
}
}
free(env);
/* Remove trailing space, and free if unused. */
len = strlen(extra_extensions);
if (len == 0) {
free(extra_extensions);
extra_extensions = NULL;
} else if (extra_extensions[len - 1] == ' ') {
extra_extensions[len - 1] = '\0';
}
}