mirror of https://github.com/encounter/SDL.git
[KMS/DRM] Rework some functions.
This commit is contained in:
parent
67f0b9b86d
commit
427c96ec11
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@ -252,7 +252,7 @@ KMSDRM_ShowCursor(SDL_Cursor * cursor)
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info.plane = dispdata->cursor_plane;
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/* The rest of the members are zeroed. */
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drm_atomic_set_plane_props(&info);
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if (drm_atomic_commit(display->device, SDL_TRUE))
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if (drm_atomic_commit(display->device, SDL_TRUE, SDL_FALSE))
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return SDL_SetError("Failed atomic commit in KMSDRM_ShowCursor.");
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}
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return 0;
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@ -324,7 +324,7 @@ KMSDRM_ShowCursor(SDL_Cursor * cursor)
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drm_atomic_set_plane_props(&info);
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if (drm_atomic_commit(display->device, SDL_TRUE)) {
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if (drm_atomic_commit(display->device, SDL_TRUE, SDL_FALSE)) {
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ret = SDL_SetError("Failed atomic commit in KMSDRM_ShowCursor.");
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goto cleanup;
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}
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@ -491,7 +491,7 @@ KMSDRM_DeinitMouse(_THIS)
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drm_atomic_set_plane_props(&info);
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/* Wait until the cursor is unset from the cursor plane
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before destroying it's BO. */
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if (drm_atomic_commit(video_device, SDL_TRUE)) {
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if (drm_atomic_commit(video_device, SDL_TRUE, SDL_FALSE)) {
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SDL_SetError("Failed atomic commit in KMSDRM_DenitMouse.");
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}
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/* ..and finally destroy the cursor DRM BO! */
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@ -224,7 +224,6 @@ KMSDRM_GLES_SwapWindowFenced(_THIS, SDL_Window * window)
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uint32_t blob_id;
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SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata;
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dispdata->atomic_flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
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add_connector_property(dispdata->atomic_req, dispdata->connector, "CRTC_ID", dispdata->crtc->crtc->crtc_id);
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KMSDRM_drmModeCreatePropertyBlob(viddata->drm_fd, &dispdata->mode, sizeof(dispdata->mode), &blob_id);
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add_crtc_property(dispdata->atomic_req, dispdata->crtc, "MODE_ID", blob_id);
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@ -237,10 +236,15 @@ KMSDRM_GLES_SwapWindowFenced(_THIS, SDL_Window * window)
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/* this must not block so the game can start building another */
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/* frame, even if the just-requested pageflip hasnt't completed. */
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/*****************************************************************/
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if (drm_atomic_commit(_this, SDL_FALSE)) {
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if (drm_atomic_commit(_this, SDL_FALSE, dispdata->modeset_pending)) {
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return SDL_SetError("Failed to issue atomic commit on pageflip");
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}
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/* If we had a pending modesetting, we have done it by now. */
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if (dispdata->modeset_pending) {
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dispdata->modeset_pending = SDL_FALSE;
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}
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/* Release the previous front buffer so EGL can chose it as back buffer
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and render on it again. */
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if (windata->bo) {
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@ -283,22 +287,23 @@ KMSDRM_GLES_SwapWindowDoubleBuffered(_THIS, SDL_Window * window)
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KMSDRM_FBInfo *fb;
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KMSDRM_PlaneInfo info = {0};
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/****************************************************************************************************/
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/* In double-buffer mode, atomic_commit will always be synchronous/blocking (ie: won't return until */
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/* the requested changes are really done). */
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/* Also, there's no need to fence KMS or the GPU, because we won't be entering game loop again */
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/* (hence not building or executing a new cmdstring) until pageflip is done, so we don't need to */
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/* protect the KMS/GPU access to the buffer. */
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/****************************************************************************************************/
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/**********************************************************************************/
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/* In double-buffer mode, atomic_commit will always be synchronous/blocking (ie: */
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/* won't return until the requested changes are really done). */ /* Also, there's no need to fence KMS or the GPU, because we won't be entering */
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/* game loop again (hence not building or executing a new cmdstring) until */
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/* pageflip is done, so we don't need to protect the KMS/GPU access to the buffer.*/
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/**********************************************************************************/
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/* Mark, at EGL level, the buffer that we want to become the new front buffer.
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However, it won't really happen until we request a pageflip at the KMS level and it completes. */
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It won't really happen until we request a pageflip at the KMS level and it
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completes. */
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if (! _this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, windata->egl_surface)) {
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return SDL_EGL_SetError("Failed to swap EGL buffers", "eglSwapBuffers");
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}
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/* Lock the buffer that is marked by eglSwapBuffers() to become the next front buffer (so it can not
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be chosen by EGL as back buffer to draw on), and get a handle to it to request the pageflip on it. */
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/* Lock the buffer that is marked by eglSwapBuffers() to become the next front buffer
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(so it can not be chosen by EGL as back buffer to draw on), and get a handle to it,
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to request the pageflip on it. */
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windata->next_bo = KMSDRM_gbm_surface_lock_front_buffer(windata->gs);
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if (!windata->next_bo) {
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return SDL_SetError("Failed to lock frontbuffer");
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@ -324,20 +329,25 @@ KMSDRM_GLES_SwapWindowDoubleBuffered(_THIS, SDL_Window * window)
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/* Do we have a pending modesetting? If so, set the necessary
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props so it's included in the incoming atomic commit. */
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if (dispdata->modeset_pending) {
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SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata;
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uint32_t blob_id;
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dispdata->atomic_flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
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SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata;
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add_connector_property(dispdata->atomic_req, dispdata->connector, "CRTC_ID", dispdata->crtc->crtc->crtc_id);
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KMSDRM_drmModeCreatePropertyBlob(viddata->drm_fd, &dispdata->mode, sizeof(dispdata->mode), &blob_id);
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add_crtc_property(dispdata->atomic_req, dispdata->crtc, "MODE_ID", blob_id);
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add_crtc_property(dispdata->atomic_req, dispdata->crtc, "active", 1);
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dispdata->modeset_pending = SDL_FALSE;
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}
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/* Issue the one and only atomic commit where all changes will be requested!.
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Blocking for double buffering: won't return until completed. */
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if (drm_atomic_commit(_this, SDL_TRUE)) {
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return SDL_SetError("Failed to issue atomic commit");
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if (drm_atomic_commit(_this, SDL_TRUE, dispdata->modeset_pending)) {
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return SDL_SetError("Failed to issue atomic commit on pageflip");
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}
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/* If we had a pending modesetting, we have done it by now. */
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if (dispdata->modeset_pending) {
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dispdata->modeset_pending = SDL_FALSE;
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}
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/* Release last front buffer so EGL can chose it as back buffer and render on it again. */
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@ -486,8 +486,8 @@ void get_planes_info(_THIS)
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#endif
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/* Get the plane_id of a plane that is of the specified plane type (primary,
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overlay, cursor...) and can use the CRTC we have chosen previously. */
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static int get_plane_id(_THIS, uint32_t plane_type)
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overlay, cursor...) and can use specified CRTC. */
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static int get_plane_id(_THIS, unsigned int crtc_id, uint32_t plane_type)
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{
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drmModeRes *resources = NULL;
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drmModePlaneResPtr plane_resources = NULL;
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@ -497,14 +497,13 @@ static int get_plane_id(_THIS, uint32_t plane_type)
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int found = 0;
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SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata);
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SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0);
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resources = KMSDRM_drmModeGetResources(viddata->drm_fd);
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/* Get the crtc_index for the current CRTC.
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It's needed to find out if a plane supports the CRTC. */
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for (i = 0; i < resources->count_crtcs; i++) {
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if (resources->crtcs[i] == dispdata->crtc->crtc->crtc_id) {
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if (resources->crtcs[i] == crtc_id) {
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crtc_index = i;
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break;
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}
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@ -565,6 +564,7 @@ setup_plane(_THIS, struct plane **plane, uint32_t plane_type)
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{
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uint32_t plane_id;
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SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata);
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SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0);
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int ret = 0;
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*plane = SDL_calloc(1, sizeof(**plane));
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@ -573,8 +573,8 @@ setup_plane(_THIS, struct plane **plane, uint32_t plane_type)
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goto cleanup;
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}
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/* Get plane ID. */
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plane_id = get_plane_id(_this, plane_type);
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/* Get plane ID for a given CRTC and plane type. */
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plane_id = get_plane_id(_this, dispdata->crtc->crtc->crtc_id, plane_type);
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if (!plane_id) {
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ret = SDL_SetError("Invalid Plane ID");
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@ -671,19 +671,28 @@ drm_atomic_set_plane_props(struct KMSDRM_PlaneInfo *info)
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add_plane_property(dispdata->atomic_req, info->plane, "CRTC_Y", info->crtc_y);
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}
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int drm_atomic_commit(_THIS, SDL_bool blocking)
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int drm_atomic_commit(_THIS, SDL_bool blocking, SDL_bool allow_modeset)
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{
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SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0);
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SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata);
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uint32_t atomic_flags = 0;
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int ret;
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if (!blocking)
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dispdata->atomic_flags |= DRM_MODE_ATOMIC_NONBLOCK;
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if (!blocking) {
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atomic_flags |= DRM_MODE_ATOMIC_NONBLOCK;
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}
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/* Never issue a new atomic commit if previous has not yet completed, or it will error. */
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if (allow_modeset) {
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atomic_flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
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}
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/* Never issue a new atomic commit if previous has not yet completed,
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or it will error. */
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drm_atomic_waitpending(_this);
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ret = KMSDRM_drmModeAtomicCommit(viddata->drm_fd, dispdata->atomic_req, dispdata->atomic_flags, NULL);
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ret = KMSDRM_drmModeAtomicCommit(viddata->drm_fd, dispdata->atomic_req,
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atomic_flags, NULL);
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if (ret) {
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SDL_SetError("Atomic commit failed, returned %d.", ret);
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/* Uncomment this for fast-debugging */
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@ -701,7 +710,6 @@ int drm_atomic_commit(_THIS, SDL_bool blocking)
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out:
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KMSDRM_drmModeAtomicFree(dispdata->atomic_req);
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dispdata->atomic_req = NULL;
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dispdata->atomic_flags = 0;
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return ret;
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}
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@ -739,7 +747,7 @@ KMSDRM_Available(void)
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if (ret >= 0)
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return 1;
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return ret;
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return ret;
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}
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static void
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@ -886,7 +894,6 @@ VideoBootStrap KMSDRM_bootstrap = {
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KMSDRM_CreateDevice
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};
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static void
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KMSDRM_FBDestroyCallback(struct gbm_bo *bo, void *data)
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{
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@ -1010,7 +1017,6 @@ int KMSDRM_DisplayDataInit (_THIS, SDL_DisplayData *dispdata) {
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int ret = 0;
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unsigned i,j;
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dispdata->atomic_flags = 0;
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dispdata->atomic_req = NULL;
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dispdata->kms_fence = NULL;
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dispdata->gpu_fence = NULL;
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@ -1326,6 +1332,30 @@ KMSDRM_DestroySurfaces(_THIS, SDL_Window *window)
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SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0);
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KMSDRM_PlaneInfo plane_info = {0};
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/* TODO : Continue investigating why this doesn't work. We should do this instead
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of making the display plane point to the TTY console, which isn't there
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after creating and destroying a Vulkan window. */
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#if 0
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/* Disconnect the connector from the CRTC (remember: several connectors
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can read a CRTC), deactivate the CRTC, and set the PRIMARY PLANE props
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CRTC_ID and FB_ID to 0. Then we can destroy the GBM buffers and surface. */
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add_connector_property(dispdata->atomic_req, dispdata->connector , "CRTC_ID", 0);
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add_crtc_property(dispdata->atomic_req, dispdata->crtc , "MODE_ID", 0);
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add_crtc_property(dispdata->atomic_req, dispdata->crtc , "active", 0);
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plane_info.plane = dispdata->display_plane;
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plane_info.crtc_id = 0;
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plane_info.fb_id = 0;
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drm_atomic_set_plane_props(&plane_info);
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/* Issue atomic commit that is blocking and allows modesetting. */
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if (drm_atomic_commit(_this, SDL_TRUE, SDL_TRUE)) {
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SDL_SetError("Failed to issue atomic commit on surfaces destruction.");
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}
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#endif
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#if 1
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/************************************************************/
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/* Make the display plane point to the original TTY buffer. */
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/************************************************************/
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@ -1340,9 +1370,10 @@ KMSDRM_DestroySurfaces(_THIS, SDL_Window *window)
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drm_atomic_set_plane_props(&plane_info);
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if (drm_atomic_commit(_this, SDL_TRUE)) {
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if (drm_atomic_commit(_this, SDL_TRUE, SDL_FALSE)) {
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SDL_SetError("Failed to issue atomic commit on surfaces destruction.");
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}
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#endif
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/***************************/
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/* Destroy the EGL surface */
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@ -1467,6 +1498,7 @@ KMSDRM_DestroyWindow(_THIS, SDL_Window *window)
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if (_this->egl_data) {
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SDL_EGL_UnloadLibrary(_this);
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}
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/* Free display plane, and destroy GBM device. */
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KMSDRM_GBMDeinit(_this, dispdata);
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}
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@ -1706,10 +1738,12 @@ KMSDRM_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
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return SDL_SetError("Mode doesn't have an associated index");
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}
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/* Take note of the new mode. It will be used in SwapWindow to
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set the props needed for mode setting. */
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/* Take note of the new mode to be set. */
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dispdata->mode = conn->modes[modedata->mode_index];
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/* Take note that we have to change mode in SwapWindow(). We have to do it there
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because we need a buffer of the new size so the commit that contains the
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mode change can be completed OK. */
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dispdata->modeset_pending = SDL_TRUE;
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for (i = 0; i < viddata->num_windows; i++) {
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@ -84,7 +84,6 @@ typedef struct SDL_DisplayData
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{
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drmModeModeInfo mode;
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drmModeModeInfo preferred_mode;
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uint32_t atomic_flags;
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plane *display_plane;
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plane *cursor_plane;
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@ -173,7 +172,7 @@ KMSDRM_FBInfo *KMSDRM_FBFromBO(_THIS, struct gbm_bo *bo);
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void drm_atomic_set_plane_props(struct KMSDRM_PlaneInfo *info);
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void drm_atomic_waitpending(_THIS);
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int drm_atomic_commit(_THIS, SDL_bool blocking);
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int drm_atomic_commit(_THIS, SDL_bool blocking, SDL_bool allow_modeset);
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int add_plane_property(drmModeAtomicReq *req, struct plane *plane,
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const char *name, uint64_t value);
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int add_crtc_property(drmModeAtomicReq *req, struct crtc *crtc,
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