SDL_bool
KMSDRM_GLES_SetupCrtc(_THIS, SDL_Window * window) {
SDL_WindowData *wdata = ((SDL_WindowData *) window->driverdata);
SDL_DisplayData *displaydata = (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata;
SDL_VideoData *vdata = ((SDL_VideoData *)_this->driverdata);
KMSDRM_FBInfo *fb_info;
if (!(_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, wdata->egl_surface))) {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "eglSwapBuffers failed on CRTC setup");
return SDL_FALSE;
}
wdata->next_bo = KMSDRM_gbm_surface_lock_front_buffer(wdata->gs);
if (wdata->next_bo == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not lock GBM surface front buffer on CRTC setup");
return SDL_FALSE;
}
fb_info = KMSDRM_FBFromBO(_this, wdata->next_bo);
if (fb_info == NULL) {
return SDL_FALSE;
}
if(KMSDRM_drmModeSetCrtc(vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id,
0, 0, &vdata->saved_conn_id, 1, &displaydata->cur_mode) != 0) {
SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not set up CRTC to a GBM buffer");
return SDL_FALSE;
}
wdata->crtc_ready = SDL_TRUE;
return SDL_TRUE;
}
void
KMSDRM_VideoQuit(_THIS)
{
SDL_VideoData *vdata = ((SDL_VideoData *)_this->driverdata);
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "KMSDRM_VideoQuit()");
if (_this->gl_config.driver_loaded) {
SDL_GL_UnloadLibrary();
}
if(vdata->saved_crtc != NULL) {
if(vdata->drm_fd > 0 && vdata->saved_conn_id > 0) {
/* Restore saved CRTC settings */
drmModeCrtc *crtc = vdata->saved_crtc;
if(KMSDRM_drmModeSetCrtc(vdata->drm_fd, crtc->crtc_id, crtc->buffer_id,
crtc->x, crtc->y, &vdata->saved_conn_id, 1,
&crtc->mode) != 0) {
SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not restore original CRTC mode");
}
}
KMSDRM_drmModeFreeCrtc(vdata->saved_crtc);
vdata->saved_crtc = NULL;
}
if (vdata->gbm != NULL) {
KMSDRM_gbm_device_destroy(vdata->gbm);
vdata->gbm = NULL;
}
if (vdata->drm_fd >= 0) {
close(vdata->drm_fd);
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Closed DRM FD %d", vdata->drm_fd);
vdata->drm_fd = -1;
}
#ifdef SDL_INPUT_LINUXEV
SDL_EVDEV_Quit();
#endif
}
int
KMSDRM_GLES_SwapWindow(_THIS, SDL_Window * window) {
SDL_WindowData *wdata = ((SDL_WindowData *) window->driverdata);
SDL_DisplayData *displaydata = (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata;
SDL_VideoData *vdata = ((SDL_VideoData *)_this->driverdata);
KMSDRM_FBInfo *fb_info;
int ret;
/* Do we still need to wait for a flip? */
int timeout = 0;
if (_this->egl_data->egl_swapinterval == 1) {
timeout = -1;
}
if (!KMSDRM_WaitPageFlip(_this, wdata, timeout)) {
return 0;
}
/* Release previously displayed buffer (which is now the backbuffer) and lock a new one */
if (wdata->next_bo != NULL) {
KMSDRM_gbm_surface_release_buffer(wdata->gs, wdata->current_bo);
/* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Released GBM surface %p", (void *)wdata->next_bo); */
wdata->current_bo = wdata->next_bo;
wdata->next_bo = NULL;
}
if (!(_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, wdata->egl_surface))) {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "eglSwapBuffers failed.");
return 0;
}
if (wdata->current_bo == NULL) {
wdata->current_bo = KMSDRM_gbm_surface_lock_front_buffer(wdata->gs);
if (wdata->current_bo == NULL) {
return 0;
}
}
wdata->next_bo = KMSDRM_gbm_surface_lock_front_buffer(wdata->gs);
if (wdata->next_bo == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not lock GBM surface front buffer");
return 0;
/* } else {
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Locked GBM surface %p", (void *)wdata->next_bo); */
}
fb_info = KMSDRM_FBFromBO(_this, wdata->next_bo);
if (fb_info == NULL) {
return 0;
}
if (_this->egl_data->egl_swapinterval == 0) {
/* Swap buffers instantly, possible tearing */
/* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "drmModeSetCrtc(%d, %u, %u, 0, 0, &%u, 1, &%ux%u@%u)",
vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id, vdata->saved_conn_id,
displaydata->cur_mode.hdisplay, displaydata->cur_mode.vdisplay, displaydata->cur_mode.vrefresh); */
ret = KMSDRM_drmModeSetCrtc(vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id,
0, 0, &vdata->saved_conn_id, 1, &displaydata->cur_mode);
if(ret != 0) {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not pageflip with drmModeSetCrtc: %d", ret);
}
} else {
/* Queue page flip at vsync */
/* Have we already setup the CRTC to one of the GBM buffers? Do so if we have not,
or FlipPage won't work in some cases. */
if (!wdata->crtc_ready) {
if(!KMSDRM_GLES_SetupCrtc(_this, window)) {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not set up CRTC for doing vsync-ed pageflips");
return 0;
}
}
/* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "drmModePageFlip(%d, %u, %u, DRM_MODE_PAGE_FLIP_EVENT, &wdata->waiting_for_flip)",
vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id); */
ret = KMSDRM_drmModePageFlip(vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id,
DRM_MODE_PAGE_FLIP_EVENT, &wdata->waiting_for_flip);
if (ret == 0) {
wdata->waiting_for_flip = SDL_TRUE;
} else {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not queue pageflip: %d", ret);
}
}
return 0;
}
