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egl_dri2: Use a helper function for looking up and binding extensions

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This commit is contained in:
Kristian Høgsberg 2010-02-09 10:57:43 -05:00
parent ed46e90f05
commit 8c593d3ea9
1 changed files with 52 additions and 27 deletions
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79
src/egl/drivers/dri2/egl_dri2.c
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@ -375,6 +375,56 @@ static const char dri_driver_format[] = "%.*s/%.*s_dri.so";
static const char dri_driver_path[] = DEFAULT_DRIVER_DIR;
struct dri2_extension_match {
const char *name;
int version;
int offset;
};
static struct dri2_extension_match dri2_driver_extensions[] = {
{ __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
{ __DRI_DRI2, 1, offsetof(struct dri2_egl_display, dri2) },
{ NULL }
};
static struct dri2_extension_match dri2_core_extensions[] = {
{ __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
{ NULL }
};
static EGLBoolean
dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
struct dri2_extension_match *matches,
const __DRIextension **extensions)
{
int i, j, ret = EGL_TRUE;
void *field;
for (i = 0; extensions[i]; i++) {
_eglLog(_EGL_DEBUG, "DRI2: found extension `%s'", extensions[i]->name);
for (j = 0; matches[j].name; j++) {
if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
extensions[i]->version >= matches[j].version) {
field = ((char *) dri2_dpy + matches[j].offset);
*(const __DRIextension **) field = extensions[i];
_eglLog(_EGL_INFO, "DRI2: found extension %s version %d",
extensions[i]->name, extensions[i]->version);
}
}
}
for (j = 0; matches[j].name; j++) {
field = ((char *) dri2_dpy + matches[j].offset);
if (*(const __DRIextension **) field == NULL) {
_eglLog(_EGL_FATAL, "DRI2: did not find extension %s version %d",
matches[j].name, matches[j].version);
ret = EGL_FALSE;
}
}
return ret;
}
/**
* Called via eglInitialize(), GLX_drv->API.Initialize().
*/
@ -497,24 +547,8 @@ dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp,
goto cleanup_driver;
}
for (i = 0; extensions[i]; i++) {
_eglLog(_EGL_DEBUG, "DRI2: found driver extension `%s'",
extensions[i]->name);
if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
dri2_dpy->core = (__DRIcoreExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
dri2_dpy->dri2 = (__DRIdri2Extension *) extensions[i];
}
if (dri2_dpy->core == NULL) {
_eglLog(_EGL_FATAL, "DRI2: driver has no core extension");
if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions))
goto cleanup_driver;
}
if (dri2_dpy->dri2 == NULL) {
_eglLog(_EGL_FATAL, "DRI2: driver has no dri2 extension");
goto cleanup_driver;
}
snprintf(path, sizeof path, "%.*s",
xcb_dri2_connect_device_name_length (connect),
@ -570,17 +604,8 @@ dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp,
}
extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
for (i = 0; extensions[i]; i++) {
_eglLog(_EGL_DEBUG, "DRI2: found core extension `%s'",
extensions[i]->name);
if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0))
dri2_dpy->flush = (__DRI2flushExtension *) extensions[i];
}
if (dri2_dpy->flush == NULL) {
_eglLog(_EGL_FATAL, "DRI2: driver doesn't support the flush extension");
if (!dri2_bind_extensions(dri2_dpy, dri2_core_extensions, extensions))
goto cleanup_dri_screen;
}
for (i = 0; driver_configs[i]; i++)
dri2_add_config(disp, driver_configs[i], i + 1);