ssize_t drmtest_write(struct file *filp, const char __user *user_buf, size_t count, loff_t *f_pos) {
init_drm();
display_animation();
exit_drm();
return count;
}
static void *drm_gfx_init(const video_info_t *video,
const input_driver_t **input, void **input_data)
{
struct drm_video *_drmvars = (struct drm_video*)
calloc(1, sizeof(struct drm_video));
if (!_drmvars)
return NULL;
/* Setup surface parameters */
_drmvars->menu_active = false;
_drmvars->rgb32 = video->rgb32;
/* It's very important that we set aspect here because the
* call seq when a core is loaded is gfx_init()->set_aspect()->gfx_frame()
* and we don't want the main surface to be setup in set_aspect()
* before we get to gfx_frame(). */
_drmvars->current_aspect = video_driver_get_aspect_ratio();
/* Initialize the rest of the mutexes and conditions. */
_drmvars->vsync_condition = scond_new();
_drmvars->vsync_cond_mutex = slock_new();
_drmvars->pending_mutex = slock_new();
_drmvars->core_width = 0;
_drmvars->core_height = 0;
_drmvars->main_surface = NULL;
_drmvars->menu_surface = NULL;
if (input && input_data)
*input = NULL;
/* DRM Init */
if (!init_drm())
{
RARCH_ERR ("DRM: Failed to initialize DRM\n");
return NULL;
}
else
RARCH_LOG ("DRM: Init succesful.\n");
_drmvars->kms_width = drm.current_mode->hdisplay;
_drmvars->kms_height = drm.current_mode->vdisplay;
return _drmvars;
}
struct display *
display_create(int *argc, char **argv[], const GOptionEntry *option_entries)
{
struct display *d;
GOptionContext *context;
GOptionGroup *xkb_option_group;
GError *error;
g_type_init();
context = g_option_context_new(NULL);
if (option_entries)
g_option_context_add_main_entries(context, option_entries, "Wayland View");
xkb_option_group = g_option_group_new("xkb",
"Keyboard options",
"Show all XKB options",
NULL, NULL);
g_option_group_add_entries(xkb_option_group, xkb_option_entries);
g_option_context_add_group (context, xkb_option_group);
if (!g_option_context_parse(context, argc, argv, &error)) {
fprintf(stderr, "option parsing failed: %s\n", error->message);
exit(EXIT_FAILURE);
}
d = malloc(sizeof *d);
if (d == NULL)
return NULL;
d->display = wl_display_connect(NULL);
if (d->display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return NULL;
}
wl_list_init(&d->input_list);
/* Set up listener so we'll catch all events. */
wl_display_add_global_listener(d->display,
display_handle_global, d);
/* Process connection events. */
wl_display_iterate(d->display, WL_DISPLAY_READABLE);
if (d->device_name && init_drm(d) < 0)
return NULL;
create_pointer_surfaces(d);
display_render_frame(d);
d->loop = g_main_loop_new(NULL, FALSE);
d->source = wl_glib_source_new(d->display);
g_source_attach(d->source, NULL);
wl_list_init(&d->window_list);
init_xkb(d);
return d;
}
const struct drm *init_drm_atomic(const char *device, uint64_t *modifiers,
unsigned int num_modifiers)
{
uint32_t plane_id;
int ret;
ret = init_drm(&drm, device);
if (ret)
return NULL;
drm.num_modifiers = num_modifiers;
drm.modifiers = modifiers;
ret = drmSetClientCap(drm.fd, DRM_CLIENT_CAP_ATOMIC, 1);
if (ret) {
printf("no atomic modesetting support: %s\n", strerror(errno));
return NULL;
}
ret = get_plane_id();
if (!ret) {
printf("could not find a suitable plane\n");
return NULL;
} else {
plane_id = ret;
}
/* We only do single plane to single crtc to single connector, no
* fancy multi-monitor or multi-plane stuff. So just grab the
* plane/crtc/connector property info for one of each:
*/
drm.plane = calloc(1, sizeof(*drm.plane));
drm.crtc = calloc(1, sizeof(*drm.crtc));
drm.connector = calloc(1, sizeof(*drm.connector));
#define get_resource(type, Type, id) do { \
drm.type->type = drmModeGet##Type(drm.fd, id); \
if (!drm.type->type) { \
printf("could not get %s %i: %s\n", \
#type, id, strerror(errno)); \
return NULL; \
} \
} while (0)
get_resource(plane, Plane, plane_id);
get_resource(crtc, Crtc, drm.crtc_id);
get_resource(connector, Connector, drm.connector_id);
#define get_properties(type, TYPE, id) do { \
uint32_t i; \
drm.type->props = drmModeObjectGetProperties(drm.fd, \
id, DRM_MODE_OBJECT_##TYPE); \
if (!drm.type->props) { \
printf("could not get %s %u properties: %s\n", \
#type, id, strerror(errno)); \
return NULL; \
} \
drm.type->props_info = calloc(drm.type->props->count_props, \
sizeof(drm.type->props_info)); \
for (i = 0; i < drm.type->props->count_props; i++) { \
drm.type->props_info[i] = drmModeGetProperty(drm.fd, \
drm.type->props->props[i]); \
} \
} while (0)
get_properties(plane, PLANE, plane_id);
get_properties(crtc, CRTC, drm.crtc_id);
get_properties(connector, CONNECTOR, drm.connector_id);
if (num_modifiers == 0) {
ret = drm_atomic_get_modifiers(&drm);
if (ret < 0)
return NULL;
}
drm.run = atomic_run;
return &drm;
}
int init_egl_drm()
{
fd_set fds;
drmEventContext evctx = {
.version = DRM_EVENT_CONTEXT_VERSION,
.vblank_handler = 0,
.page_flip_handler = page_flip_handler,
};
struct gbm_bo *bo;
struct drm_fb *fb;
ret = init_drm();
if (ret) {
printf("failed to initialize DRM\n");
return ret;
}
printf("### Primary display => ConnectorId = %d, Resolution = %dx%d\n",
drm.connector_id[DISP_ID], drm.mode[DISP_ID]->hdisplay,
drm.mode[DISP_ID]->vdisplay);
FD_ZERO(&fds);
FD_SET(drm.fd, &fds);
ret = init_gbm();
if (ret) {
printf("failed to initialize GBM\n");
return ret;
}
//Initialise egl regularly here
}
void egl_drm_draw_flip()
{
/* set mode: */
if (all_display) {
for (i=0; i<drm.ndisp; i++) {
ret = drmModeSetCrtc(drm.fd, drm.crtc_id[i], fb->fb_id, 0, 0,
&drm.connector_id[i], 1, drm.mode[i]);
if (ret) {
printf("display %d failed to set mode: %s\n", i, strerror(errno));
return ret;
}
}
} else {
ret = drmModeSetCrtc(drm.fd, drm.crtc_id[DISP_ID], fb->fb_id,
0, 0, &drm.connector_id[DISP_ID], 1, drm.mode[DISP_ID]);
if (ret) {
printf("display %d failed to set mode: %s\n", DISP_ID, strerror(errno));
return ret;
}
}
//Draw call here
//Swapping is involved
next_bo = gbm_surface_lock_front_buffer(gbm.surface);
fb = drm_fb_get_from_bo(next_bo);
/*
* Here you could also update drm plane layers if you want
* hw composition
*/
ret = drmModePageFlip(drm.fd, drm.crtc_id[DISP_ID], fb->fb_id,
DRM_MODE_PAGE_FLIP_EVENT, &waiting_for_flip);
if (ret) {
printf("failed to queue page flip: %s\n", strerror(errno));
return -1;
}
while (waiting_for_flip) {
ret = select(drm.fd + 1, &fds, NULL, NULL, NULL);
if (ret < 0) {
printf("select err: %s\n", strerror(errno));
return ret;
} else if (ret == 0) {
printf("select timeout!\n");
return -1;
} else if (FD_ISSET(0, &fds)) {
continue;
}
drmHandleEvent(drm.fd, &evctx);
}
/* release last buffer to render on again: */
gbm_surface_release_buffer(gbm.surface, bo);
bo = next_bo;
}
int main(int argc, char *argv[])
{
struct opt_data opts; optproc(argc, argv, &opts);
if(audio_init(&opts) < 0) exit(1);
if(opts.w < 0 && opts.h < 0) opts.w = opts.h = 512;
else if(opts.w < 0) opts.w = opts.h;
else if(opts.h < 0) opts.h = opts.w;
int ret;
ret = init_drm(&opts, 512);
if (ret) {
printf("failed to initialize DRM\n");
return ret;
}
ret = init_gbm();
if (ret) {
printf("failed to initialize GBM\n");
return ret;
}
ret = init_egl();
if (ret) {
printf("failed to initialize EGL\n");
return ret;
}
// call init_gl
//init_gl(&opts, drm.mode->hdisplay, drm.mode->vdisplay);
init_gl(&opts, opts.w, opts.h); //TODO: better dealing with our great big screen
eglSwapBuffers(gl.display, gl.surface);
struct gbm_bo *bo = gbm_surface_lock_front_buffer(gbm.surface);
fb = drm_fb_get_from_bo(bo);
/* set mode: */
ret = drmModeSetCrtc(drm.fd, drm.crtc_id, fb->fb_id, 0, 0,
&drm.connector_id, 1, drm.mode);
if (ret) {
printf("failed to set mode: %s\n", strerror(errno));
return ret;
}
// turn off line buffering on input and echoing of characters
struct termios term;
tcgetattr(STDIN_FILENO, &save_term);
tcgetattr(STDIN_FILENO, &term);
term.c_lflag &= ~(ICANON|ECHO);
tcsetattr(STDIN_FILENO, TCSANOW, &term);
atexit(shutdown_cleanup);
drmVBlank vbl;
/* Get current count first hopefully also sync up with blank too*/
vbl.request.type = DRM_VBLANK_RELATIVE;
vbl.request.sequence = 1;
ret = drmWaitVBlank(drm.fd, &vbl);
if (ret != 0) {
printf("drmWaitVBlank (relative, event) failed ret: %i\n", ret);
return -1;
}
printf("starting msc: %d\n", vbl.request.sequence);
/* Queue an event for frame + 1 */
vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
vbl.request.sequence = 1;
vbl.request.signal = NULL;
ret = drmWaitVBlank(drm.fd, &vbl);
if (ret != 0) {
printf("drmWaitVBlank (relative, event) failed ret: %i\n", ret);
return -1;
}
struct pollfd pfds[] = {
{drm.fd, POLLIN | POLLPRI, 0 },
{STDIN_FILENO, POLLIN, 0 },
};
int debug_maxsrc = 0, debug_pal = 0, show_mandel = 0, show_fps_hist = 0;
bool done = false;
while (!done) {
render_frame(debug_maxsrc, debug_pal, show_mandel, show_fps_hist);
while (waiting_for_flip) { // TODO: input handling
ret = poll(pfds, 2, -1);
if (ret < 0) {
printf("poll err: %s\n", strerror(errno));
return ret;
} else if (ret == 0) {
printf("poll timeout!\n");
done = true;
break;
}
if (pfds[1].revents) {
char buf[128];
int cnt = read(STDIN_FILENO, buf, sizeof(buf));
if(buf[0] == 27) done = true;
else if(buf[0] == '1') debug_maxsrc = !debug_maxsrc;
else if(buf[0] == '2') debug_pal = !debug_pal;
else if(buf[0] == '3') show_mandel = !show_mandel;
else if(buf[0] == '4') show_fps_hist = !show_fps_hist;
//continue;
}
if(pfds[0].revents)
drmHandleEvent(drm.fd, &evctx);
}
/* release last buffer to render on again: */
gbm_surface_release_buffer(gbm.surface, bo);
bo = next_bo;
}
audio_shutdown();
return ret;
}
