| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| |
| #include "../../SDL_internal.h" |
| |
| #if SDL_VIDEO_DRIVER_KMSDRM |
| |
| /* SDL internals */ |
| #include "../SDL_sysvideo.h" |
| #include "SDL_syswm.h" |
| #include "SDL_hints.h" |
| #include "../../events/SDL_events_c.h" |
| #include "../../events/SDL_mouse_c.h" |
| #include "../../events/SDL_keyboard_c.h" |
| |
| #ifdef SDL_INPUT_LINUXEV |
| #include "../../core/linux/SDL_evdev.h" |
| #endif |
| |
| /* KMS/DRM declarations */ |
| #include "SDL_kmsdrmvideo.h" |
| #include "SDL_kmsdrmevents.h" |
| #include "SDL_kmsdrmopengles.h" |
| #include "SDL_kmsdrmmouse.h" |
| #include "SDL_kmsdrmdyn.h" |
| #include <sys/stat.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <poll.h> |
| |
| #define KMSDRM_DRI_PATH "/dev/dri/" |
| |
| static int |
| check_modesetting(int devindex) |
| { |
| SDL_bool available = SDL_FALSE; |
| char device[512]; |
| int drm_fd; |
| |
| SDL_snprintf(device, sizeof (device), "%scard%d", KMSDRM_DRI_PATH, devindex); |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "check_modesetting: probing \"%s\"", device); |
| |
| drm_fd = open(device, O_RDWR | O_CLOEXEC); |
| if (drm_fd >= 0) { |
| if (SDL_KMSDRM_LoadSymbols()) { |
| drmModeRes *resources = KMSDRM_drmModeGetResources(drm_fd); |
| if (resources) { |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "%scard%d connector, encoder and CRTC counts are: %d %d %d", |
| KMSDRM_DRI_PATH, devindex, |
| resources->count_connectors, resources->count_encoders, resources->count_crtcs); |
| |
| if (resources->count_connectors > 0 && resources->count_encoders > 0 && resources->count_crtcs > 0) { |
| for (int i = 0; i < resources->count_connectors; i++) { |
| drmModeConnector *conn = KMSDRM_drmModeGetConnector(drm_fd, resources->connectors[i]); |
| |
| if (!conn) { |
| continue; |
| } |
| |
| if (conn->connection == DRM_MODE_CONNECTED && conn->count_modes) { |
| available = SDL_TRUE; |
| } |
| |
| KMSDRM_drmModeFreeConnector(conn); |
| if (available) { |
| break; |
| } |
| } |
| } |
| KMSDRM_drmModeFreeResources(resources); |
| } |
| SDL_KMSDRM_UnloadSymbols(); |
| } |
| close(drm_fd); |
| } |
| |
| return available; |
| } |
| |
| static int get_dricount(void) |
| { |
| int devcount = 0; |
| struct dirent *res; |
| struct stat sb; |
| DIR *folder; |
| |
| if (!(stat(KMSDRM_DRI_PATH, &sb) == 0 |
| && S_ISDIR(sb.st_mode))) { |
| printf("The path %s cannot be opened or is not available\n", |
| KMSDRM_DRI_PATH); |
| return 0; |
| } |
| |
| if (access(KMSDRM_DRI_PATH, F_OK) == -1) { |
| printf("The path %s cannot be opened\n", |
| KMSDRM_DRI_PATH); |
| return 0; |
| } |
| |
| folder = opendir(KMSDRM_DRI_PATH); |
| if (folder) { |
| while ((res = readdir(folder))) { |
| int len = SDL_strlen(res->d_name); |
| if (len > 4 && SDL_strncmp(res->d_name, "card", 4) == 0) { |
| devcount++; |
| } |
| } |
| closedir(folder); |
| } |
| |
| return devcount; |
| } |
| |
| static int |
| get_driindex(void) |
| { |
| const int devcount = get_dricount(); |
| int i; |
| |
| for (i = 0; i < devcount; i++) { |
| if (check_modesetting(i)) { |
| return i; |
| } |
| } |
| |
| return -ENOENT; |
| } |
| |
| /*********************************/ |
| /* Atomic helper functions block */ |
| /*********************************/ |
| |
| #define VOID2U64(x) ((uint64_t)(unsigned long)(x)) |
| |
| static int add_connector_property(drmModeAtomicReq *req, struct connector *connector, |
| const char *name, uint64_t value) |
| { |
| unsigned int i; |
| int prop_id = 0; |
| |
| for (i = 0 ; i < connector->props->count_props ; i++) { |
| if (strcmp(connector->props_info[i]->name, name) == 0) { |
| prop_id = connector->props_info[i]->prop_id; |
| break; |
| } |
| } |
| |
| if (prop_id < 0) { |
| printf("no connector property: %s\n", name); |
| return -EINVAL; |
| } |
| |
| return KMSDRM_drmModeAtomicAddProperty(req, connector->connector->connector_id, prop_id, value); |
| } |
| |
| static int add_crtc_property(drmModeAtomicReq *req, struct crtc *crtc, |
| const char *name, uint64_t value) |
| { |
| unsigned int i; |
| int prop_id = -1; |
| |
| for (i = 0 ; i < crtc->props->count_props ; i++) { |
| if (strcmp(crtc->props_info[i]->name, name) == 0) { |
| prop_id = crtc->props_info[i]->prop_id; |
| break; |
| } |
| } |
| |
| if (prop_id < 0) { |
| printf("no crtc property: %s\n", name); |
| return -EINVAL; |
| } |
| |
| return KMSDRM_drmModeAtomicAddProperty(req, crtc->crtc->crtc_id, prop_id, value); |
| } |
| |
| static int add_plane_property(drmModeAtomicReq *req, struct plane *plane, |
| const char *name, uint64_t value) |
| { |
| unsigned int i; |
| int prop_id = -1; |
| |
| for (i = 0 ; i < plane->props->count_props ; i++) { |
| if (strcmp(plane->props_info[i]->name, name) == 0) { |
| prop_id = plane->props_info[i]->prop_id; |
| break; |
| } |
| } |
| |
| if (prop_id < 0) { |
| printf("no plane property: %s\n", name); |
| return -EINVAL; |
| } |
| |
| return KMSDRM_drmModeAtomicAddProperty(req, plane->plane->plane_id, prop_id, value); |
| } |
| |
| #if 0 |
| |
| void print_plane_info(_THIS, drmModePlanePtr plane) |
| { |
| char *plane_type; |
| drmModeRes *resources; |
| uint32_t type = 0; |
| SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| |
| drmModeObjectPropertiesPtr props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, |
| plane->plane_id, DRM_MODE_OBJECT_PLANE); |
| |
| /* Search the plane props for the plane type. */ |
| for (int j = 0; j < props->count_props; j++) { |
| |
| drmModePropertyPtr p = KMSDRM_drmModeGetProperty(viddata->drm_fd, props->props[j]); |
| |
| if ((strcmp(p->name, "type") == 0)) { |
| type = props->prop_values[j]; |
| } |
| |
| KMSDRM_drmModeFreeProperty(p); |
| } |
| |
| switch (type) { |
| case DRM_PLANE_TYPE_OVERLAY: |
| plane_type = "overlay"; |
| break; |
| |
| case DRM_PLANE_TYPE_PRIMARY: |
| plane_type = "primary"; |
| break; |
| |
| case DRM_PLANE_TYPE_CURSOR: |
| plane_type = "cursor"; |
| break; |
| } |
| |
| |
| /* Remember that to present a plane on screen, it has to be |
| connected to a CRTC so the CRTC scans it, |
| scales it, etc... and presents it on screen. */ |
| |
| /* Now we look for the CRTCs supported by the plane. */ |
| resources = KMSDRM_drmModeGetResources(viddata->drm_fd); |
| if (!resources) |
| return; |
| |
| printf("--PLANE ID: %d\nPLANE TYPE: %s\nCRTC READING THIS PLANE: %d\nCRTCS SUPPORTED BY THIS PLANE: ", plane->plane_id, plane_type, plane->crtc_id); |
| for (int i = 0; i < resources->count_crtcs; i++) { |
| if (plane->possible_crtcs & (1 << i)) { |
| uint32_t crtc_id = resources->crtcs[i]; |
| printf ("%d", crtc_id); |
| break; |
| } |
| } |
| |
| printf ("\n\n"); |
| } |
| |
| void get_planes_info(_THIS) |
| { |
| drmModePlaneResPtr plane_resources; |
| uint32_t i; |
| |
| SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); |
| |
| plane_resources = KMSDRM_drmModeGetPlaneResources(viddata->drm_fd); |
| if (!plane_resources) { |
| printf("drmModeGetPlaneResources failed: %s\n", strerror(errno)); |
| return; |
| } |
| |
| printf("--Number of planes found: %d-- \n", plane_resources->count_planes); |
| printf("--Usable CRTC that we have chosen: %d-- \n", dispdata->crtc->crtc->crtc_id); |
| |
| /* Iterate on all the available planes. */ |
| for (i = 0; (i < plane_resources->count_planes); i++) { |
| |
| uint32_t plane_id = plane_resources->planes[i]; |
| |
| drmModePlanePtr plane = KMSDRM_drmModeGetPlane(viddata->drm_fd, plane_id); |
| if (!plane) { |
| printf("drmModeGetPlane(%u) failed: %s\n", plane_id, strerror(errno)); |
| continue; |
| } |
| |
| /* Print plane info. */ |
| print_plane_info(_this, plane); |
| KMSDRM_drmModeFreePlane(plane); |
| } |
| |
| KMSDRM_drmModeFreePlaneResources(plane_resources); |
| } |
| |
| #endif |
| |
| /* Get the plane_id of a plane that is of the specified plane type (primary, |
| overlay, cursor...) and can use the CRTC we have chosen previously. */ |
| static uint32_t get_plane_id(_THIS, drmModeRes *resources, uint32_t plane_type) |
| { |
| drmModePlaneResPtr plane_resources; |
| uint32_t i, j; |
| uint32_t crtc_index = 0; |
| uint32_t ret = -EINVAL; |
| int found = 0; |
| |
| SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); |
| |
| /* Get the crtc_index for the current CRTC. |
| It's needed to find out if a plane supports the CRTC. */ |
| for (i = 0; i < resources->count_crtcs; i++) { |
| if (resources->crtcs[i] == dispdata->crtc->crtc->crtc_id) { |
| crtc_index = i; |
| break; |
| } |
| } |
| |
| plane_resources = KMSDRM_drmModeGetPlaneResources(viddata->drm_fd); |
| if (!plane_resources) { |
| printf("drmModeGetPlaneResources failed: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| /* Iterate on all the available planes. */ |
| for (i = 0; (i < plane_resources->count_planes) && !found; i++) { |
| |
| uint32_t plane_id = plane_resources->planes[i]; |
| |
| drmModePlanePtr plane = KMSDRM_drmModeGetPlane(viddata->drm_fd, plane_id); |
| if (!plane) { |
| printf("drmModeGetPlane(%u) failed: %s\n", plane_id, strerror(errno)); |
| continue; |
| } |
| |
| /* See if the current CRTC is available for this plane. */ |
| if (plane->possible_crtcs & (1 << crtc_index)) { |
| |
| drmModeObjectPropertiesPtr props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, |
| plane_id, DRM_MODE_OBJECT_PLANE); |
| ret = plane_id; |
| |
| /* Iterate on the plane props to find the type of the plane, |
| to see if it's of the type we want. */ |
| for (j = 0; j < props->count_props; j++) { |
| |
| drmModePropertyPtr p = KMSDRM_drmModeGetProperty(viddata->drm_fd, |
| props->props[j]); |
| |
| if ((strcmp(p->name, "type") == 0) && |
| (props->prop_values[j] == plane_type)) { |
| /* found our plane, use that: */ |
| found = 1; |
| } |
| |
| KMSDRM_drmModeFreeProperty(p); |
| } |
| |
| KMSDRM_drmModeFreeObjectProperties(props); |
| } |
| |
| KMSDRM_drmModeFreePlane(plane); |
| } |
| |
| KMSDRM_drmModeFreePlaneResources(plane_resources); |
| |
| return ret; |
| } |
| |
| /**********************************************************************************/ |
| /* The most important ATOMIC fn of the backend. */ |
| /* A PLANE reads a BUFFER, and a CRTC reads a PLANE and sends it's contents */ |
| /* over to a CONNECTOR->ENCODER system. */ |
| /* Think of a plane as a "frame" sorrounding a picture, where the "picture" */ |
| /* is the buffer, and we move the "frame" from a picture to another, */ |
| /* and the one that has the "frame" is the one sent over to the screen */ |
| /* via the CONNECTOR->ENCODER system. */ |
| /* Think of a PLANE as being "in the middle", it's the CENTRAL part */ |
| /* bewteen the CRTC and the BUFFER that is shown on screen. */ |
| /* What we do here is connect a PLANE to a CRTC and a BUFFER. */ |
| /* -ALWAYS set the CRTC_ID and FB_ID attribs of a plane at the same time, */ |
| /* meaning IN THE SAME atomic request. */ |
| /* -And NEVER destroy a GBM surface whose buffers are being read by a plane: */ |
| /* first, move the plane away from those buffers and ONLY THEN destroy the */ |
| /* buffers and/or the GBM surface containig them. */ |
| /**********************************************************************************/ |
| void |
| drm_atomic_setbuffer(_THIS, struct plane *plane, uint32_t fb_id) |
| { |
| SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); |
| |
| /* Do we have a set of changes already in the making? If not, allocate a new one. */ |
| if (!dispdata->atomic_req) |
| dispdata->atomic_req = KMSDRM_drmModeAtomicAlloc(); |
| |
| add_plane_property(dispdata->atomic_req, plane, "FB_ID", fb_id); |
| add_plane_property(dispdata->atomic_req, plane, "CRTC_ID", dispdata->crtc->crtc->crtc_id); |
| add_plane_property(dispdata->atomic_req, plane, "SRC_W", dispdata->mode.hdisplay << 16); |
| add_plane_property(dispdata->atomic_req, plane, "SRC_H", dispdata->mode.vdisplay << 16); |
| add_plane_property(dispdata->atomic_req, plane, "SRC_X", 0); |
| add_plane_property(dispdata->atomic_req, plane, "SRC_Y", 0); |
| add_plane_property(dispdata->atomic_req, plane, "CRTC_W", dispdata->mode.hdisplay); |
| add_plane_property(dispdata->atomic_req, plane, "CRTC_H", dispdata->mode.vdisplay); |
| add_plane_property(dispdata->atomic_req, plane, "CRTC_X", 0); |
| add_plane_property(dispdata->atomic_req, plane, "CRTC_Y", 0); |
| |
| if (dispdata->kms_in_fence_fd != -1) { |
| add_crtc_property(dispdata->atomic_req, dispdata->crtc, "OUT_FENCE_PTR", |
| VOID2U64(&dispdata->kms_out_fence_fd)); |
| add_plane_property(dispdata->atomic_req, plane, "IN_FENCE_FD", dispdata->kms_in_fence_fd); |
| } |
| } |
| |
| void |
| drm_atomic_modeset(_THIS, int mode_index) |
| { |
| SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); |
| SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| drmModeModeInfo mode; |
| uint32_t blob_id; |
| |
| mode = dispdata->connector->connector->modes[mode_index]; |
| |
| /* Do we have a set of changes already in the making? If not, allocate a new one. */ |
| if (!dispdata->atomic_req) |
| dispdata->atomic_req = KMSDRM_drmModeAtomicAlloc(); |
| |
| dispdata->atomic_flags |= DRM_MODE_ATOMIC_ALLOW_MODESET; |
| |
| add_connector_property(dispdata->atomic_req, dispdata->connector, "CRTC_ID", dispdata->crtc->crtc->crtc_id); |
| add_crtc_property(dispdata->atomic_req, dispdata->crtc, "ACTIVE", 1); |
| KMSDRM_drmModeCreatePropertyBlob(viddata->drm_fd, &mode, sizeof(mode), &blob_id); |
| add_crtc_property(dispdata->atomic_req, dispdata->crtc, "MODE_ID", blob_id); |
| |
| /* Update video mode in use. */ |
| dispdata->mode = mode; |
| } |
| |
| int |
| drm_atomic_setcursor(KMSDRM_CursorData *curdata, int x, int y) |
| { |
| SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); |
| |
| /* Do we have a set of changes already in the making? If not, allocate a new one. */ |
| if (!dispdata->atomic_req) |
| dispdata->atomic_req = KMSDRM_drmModeAtomicAlloc(); |
| |
| if (curdata) |
| { |
| KMSDRM_FBInfo *fb = KMSDRM_FBFromBO(curdata->video, curdata->bo); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "FB_ID", fb->fb_id); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_ID", dispdata->crtc->crtc->crtc_id); |
| |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "SRC_X", 0); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "SRC_Y", 0); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "SRC_W", curdata->w << 16); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "SRC_H", curdata->h << 16); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_X", x); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_Y", y); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_W", curdata->w); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_H", curdata->h); |
| } |
| else |
| { |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "FB_ID", 0); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_ID", 0); |
| |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "SRC_X", 0); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "SRC_Y", 0); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "SRC_W", 0); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "SRC_H", 0); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_W", 0); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_H", 0); |
| } |
| |
| /* GPU <-> DISPLAY synchronization is done ON the display_plane, |
| so no need to set any fence props here, we do that only on the main |
| display plane. */ |
| |
| return 0; |
| } |
| |
| int |
| drm_atomic_movecursor(KMSDRM_CursorData *curdata, int x, int y) |
| { |
| SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); |
| |
| /* Do we have a set of changes already in the making? If not, allocate a new one. */ |
| if (!dispdata->atomic_req) |
| dispdata->atomic_req = KMSDRM_drmModeAtomicAlloc(); |
| |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_X", x - curdata->hot_x); |
| add_plane_property(dispdata->atomic_req, dispdata->cursor_plane, "CRTC_Y", y - curdata->hot_y); |
| |
| return 0; |
| } |
| |
| int drm_atomic_commit(_THIS, SDL_bool blocking) |
| { |
| SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); |
| SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| int ret; |
| |
| if (!blocking) |
| dispdata->atomic_flags |= DRM_MODE_ATOMIC_NONBLOCK; |
| |
| /* Never issue a new atomic commit if previous has not yet completed, or it will error. */ |
| drm_atomic_waitpending(_this); |
| |
| ret = KMSDRM_drmModeAtomicCommit(viddata->drm_fd, dispdata->atomic_req, dispdata->atomic_flags, NULL); |
| if (ret) { |
| //SDL_SetError("Atomic commit failed, returned %d.", ret); |
| printf("ATOMIC COMMIT FAILED: %d.\n", ret); |
| goto out; |
| } |
| |
| if (dispdata->kms_in_fence_fd != -1) { |
| close(dispdata->kms_in_fence_fd); |
| dispdata->kms_in_fence_fd = -1; |
| } |
| |
| out: |
| KMSDRM_drmModeAtomicFree(dispdata->atomic_req); |
| dispdata->atomic_req = NULL; |
| dispdata->atomic_flags = 0; |
| |
| return ret; |
| } |
| |
| void |
| drm_atomic_waitpending(_THIS) |
| { |
| SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); |
| |
| /* Will return immediately if we have already destroyed the fence, because we NULL-ify it just after. |
| Also, will return immediately in double-buffer mode, because kms_fence will alsawys be NULL. */ |
| if (dispdata->kms_fence) { |
| EGLint status; |
| |
| do { |
| status = _this->egl_data->eglClientWaitSyncKHR(_this->egl_data->egl_display, |
| dispdata->kms_fence, 0, EGL_FOREVER_KHR); |
| } while (status != EGL_CONDITION_SATISFIED_KHR); |
| |
| _this->egl_data->eglDestroySyncKHR(_this->egl_data->egl_display, dispdata->kms_fence); |
| dispdata->kms_fence = NULL; |
| } |
| } |
| |
| /***************************************/ |
| /* End of Atomic helper functions block*/ |
| /***************************************/ |
| |
| static int |
| KMSDRM_Available(void) |
| { |
| int ret = -ENOENT; |
| |
| ret = get_driindex(); |
| if (ret >= 0) |
| return 1; |
| |
| return ret; |
| } |
| |
| static void |
| KMSDRM_DeleteDevice(SDL_VideoDevice * device) |
| { |
| if (device->driverdata) { |
| SDL_free(device->driverdata); |
| device->driverdata = NULL; |
| } |
| |
| SDL_free(device); |
| |
| SDL_KMSDRM_UnloadSymbols(); |
| } |
| |
| static SDL_VideoDevice * |
| KMSDRM_CreateDevice(int devindex) |
| { |
| SDL_VideoDevice *device; |
| SDL_VideoData *viddata; |
| |
| if (!KMSDRM_Available()) { |
| return NULL; |
| } |
| |
| if (!devindex || (devindex > 99)) { |
| devindex = get_driindex(); |
| } |
| |
| if (devindex < 0) { |
| SDL_SetError("devindex (%d) must be between 0 and 99.", devindex); |
| return NULL; |
| } |
| |
| if (!SDL_KMSDRM_LoadSymbols()) { |
| return NULL; |
| } |
| |
| device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice)); |
| if (!device) { |
| SDL_OutOfMemory(); |
| return NULL; |
| } |
| |
| viddata = (SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData)); |
| if (!viddata) { |
| SDL_OutOfMemory(); |
| goto cleanup; |
| } |
| viddata->devindex = devindex; |
| viddata->drm_fd = -1; |
| |
| device->driverdata = viddata; |
| |
| /* Setup all functions that can be handled from this backend. */ |
| device->VideoInit = KMSDRM_VideoInit; |
| device->VideoQuit = KMSDRM_VideoQuit; |
| device->GetDisplayModes = KMSDRM_GetDisplayModes; |
| device->SetDisplayMode = KMSDRM_SetDisplayMode; |
| device->CreateSDLWindow = KMSDRM_CreateWindow; |
| device->CreateSDLWindowFrom = KMSDRM_CreateWindowFrom; |
| device->SetWindowTitle = KMSDRM_SetWindowTitle; |
| device->SetWindowIcon = KMSDRM_SetWindowIcon; |
| device->SetWindowPosition = KMSDRM_SetWindowPosition; |
| device->SetWindowSize = KMSDRM_SetWindowSize; |
| device->ShowWindow = KMSDRM_ShowWindow; |
| device->HideWindow = KMSDRM_HideWindow; |
| device->RaiseWindow = KMSDRM_RaiseWindow; |
| device->MaximizeWindow = KMSDRM_MaximizeWindow; |
| device->MinimizeWindow = KMSDRM_MinimizeWindow; |
| device->RestoreWindow = KMSDRM_RestoreWindow; |
| device->SetWindowGrab = KMSDRM_SetWindowGrab; |
| device->DestroyWindow = KMSDRM_DestroyWindow; |
| device->GetWindowWMInfo = KMSDRM_GetWindowWMInfo; |
| #if SDL_VIDEO_OPENGL_EGL |
| device->GL_LoadLibrary = KMSDRM_GLES_LoadLibrary; |
| device->GL_GetProcAddress = KMSDRM_GLES_GetProcAddress; |
| device->GL_UnloadLibrary = KMSDRM_GLES_UnloadLibrary; |
| device->GL_CreateContext = KMSDRM_GLES_CreateContext; |
| device->GL_MakeCurrent = KMSDRM_GLES_MakeCurrent; |
| device->GL_SetSwapInterval = KMSDRM_GLES_SetSwapInterval; |
| device->GL_GetSwapInterval = KMSDRM_GLES_GetSwapInterval; |
| |
| if (SDL_GetHintBoolean(SDL_HINT_VIDEO_DOUBLE_BUFFER, SDL_FALSE)) |
| device->GL_SwapWindow = KMSDRM_GLES_SwapWindowDB; |
| else |
| device->GL_SwapWindow = KMSDRM_GLES_SwapWindow; |
| |
| device->GL_DeleteContext = KMSDRM_GLES_DeleteContext; |
| #endif |
| device->PumpEvents = KMSDRM_PumpEvents; |
| device->free = KMSDRM_DeleteDevice; |
| |
| return device; |
| |
| cleanup: |
| if (device) |
| SDL_free(device); |
| if (viddata) |
| SDL_free(viddata); |
| return NULL; |
| } |
| |
| VideoBootStrap KMSDRM_bootstrap = { |
| "KMSDRM", |
| "KMS/DRM Video Driver", |
| KMSDRM_CreateDevice |
| }; |
| |
| |
| static void |
| KMSDRM_FBDestroyCallback(struct gbm_bo *bo, void *data) |
| { |
| KMSDRM_FBInfo *fb_info = (KMSDRM_FBInfo *)data; |
| |
| if (fb_info && fb_info->drm_fd >= 0 && fb_info->fb_id != 0) { |
| KMSDRM_drmModeRmFB(fb_info->drm_fd, fb_info->fb_id); |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Delete DRM FB %u", fb_info->fb_id); |
| } |
| |
| SDL_free(fb_info); |
| } |
| |
| KMSDRM_FBInfo * |
| KMSDRM_FBFromBO(_THIS, struct gbm_bo *bo) |
| { |
| SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| unsigned width, height; |
| uint32_t format, strides[4] = {0}, handles[4] = {0}, offsets[4] = {0}; |
| const int num_planes = KMSDRM_gbm_bo_get_plane_count(bo); |
| int ret; |
| |
| /* Check for an existing framebuffer */ |
| KMSDRM_FBInfo *fb_info = (KMSDRM_FBInfo *)KMSDRM_gbm_bo_get_user_data(bo); |
| |
| if (fb_info) { |
| return fb_info; |
| } |
| |
| /* Create a structure that contains the info about framebuffer |
| that we need to use it. */ |
| fb_info = (KMSDRM_FBInfo *)SDL_calloc(1, sizeof(KMSDRM_FBInfo)); |
| |
| if (!fb_info) { |
| SDL_OutOfMemory(); |
| return NULL; |
| } |
| |
| fb_info->drm_fd = viddata->drm_fd; |
| |
| width = KMSDRM_gbm_bo_get_width(bo); |
| height = KMSDRM_gbm_bo_get_height(bo); |
| format = KMSDRM_gbm_bo_get_format(bo); |
| |
| for (int i = 0; i < num_planes; i++) { |
| strides[i] = KMSDRM_gbm_bo_get_stride_for_plane(bo, i); |
| handles[i] = KMSDRM_gbm_bo_get_handle(bo).u32; |
| offsets[i] = KMSDRM_gbm_bo_get_offset(bo, i); |
| } |
| |
| /* Create framebuffer object for the buffer. |
| It's VERY important to note that fb_id is what we ise to set the FB_ID prop of a plane |
| when using the ATOMIC interface, and we get fb_id it here. */ |
| ret = KMSDRM_drmModeAddFB2(viddata->drm_fd, width, height, format, |
| handles, strides, offsets, &fb_info->fb_id, 0); |
| |
| if (ret) { |
| SDL_free(fb_info); |
| return NULL; |
| } |
| |
| /* Set the userdata pointer. This pointer is used to store custom data that we need |
| to access in the future, so we store the fb_id here for later use, because fb_id is |
| what we need to set the FB_ID property of a plane when using the ATOMIC interface. */ |
| KMSDRM_gbm_bo_set_user_data(bo, fb_info, KMSDRM_FBDestroyCallback); |
| |
| return fb_info; |
| } |
| |
| /*****************************************************************************/ |
| /* SDL Video and Display initialization/handling functions */ |
| /* _this is a SDL_VideoDevice * */ |
| /*****************************************************************************/ |
| |
| static void |
| KMSDRM_DestroySurfaces(_THIS, SDL_Window * window) |
| { |
| SDL_WindowData *windata = (SDL_WindowData *)window->driverdata; |
| SDL_DisplayData *dispdata = (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata; |
| |
| /* CAUTION: Before destroying the GBM ane EGL surfaces, we must disconnect the display plane |
| from the GBM surface buffer it's reading, and make it read the original buffer stored |
| on the CRTC while we recreate the GBM surface. |
| The plane will be pointed to one of the buffers of the new GBM surface on the next pageflip |
| (if there is another pageflip: we could arrive here because we are exiting the program...). */ |
| drm_atomic_setbuffer(_this, dispdata->display_plane, dispdata->crtc->crtc->buffer_id); |
| drm_atomic_commit(_this, SDL_TRUE); |
| |
| if (windata->bo) { |
| KMSDRM_gbm_surface_release_buffer(windata->gs, windata->bo); |
| windata->bo = NULL; |
| } |
| |
| if (windata->next_bo) { |
| KMSDRM_gbm_surface_release_buffer(windata->gs, windata->next_bo); |
| windata->next_bo = NULL; |
| } |
| |
| #if SDL_VIDEO_OPENGL_EGL |
| SDL_EGL_MakeCurrent(_this, EGL_NO_SURFACE, EGL_NO_CONTEXT); |
| |
| if (windata->egl_surface != EGL_NO_SURFACE) { |
| SDL_EGL_DestroySurface(_this, windata->egl_surface); |
| windata->egl_surface = EGL_NO_SURFACE; |
| } |
| #endif |
| |
| if (windata->gs) { |
| KMSDRM_gbm_surface_destroy(windata->gs); |
| windata->gs = NULL; |
| } |
| } |
| |
| int |
| KMSDRM_CreateSurfaces(_THIS, SDL_Window * window) |
| { |
| SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| SDL_WindowData *windata = (SDL_WindowData *)window->driverdata; |
| SDL_DisplayData *dispdata = (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata; |
| Uint32 width = dispdata->mode.hdisplay; |
| Uint32 height = dispdata->mode.vdisplay; |
| Uint32 surface_fmt = GBM_FORMAT_ARGB8888; |
| Uint32 surface_flags = GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING; |
| #if SDL_VIDEO_OPENGL_EGL |
| EGLContext egl_context; |
| #endif |
| |
| if (!KMSDRM_gbm_device_is_format_supported(viddata->gbm_dev, surface_fmt, surface_flags)) { |
| SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "GBM surface format not supported. Trying anyway."); |
| } |
| |
| #if SDL_VIDEO_OPENGL_EGL |
| SDL_EGL_SetRequiredVisualId(_this, surface_fmt); |
| egl_context = (EGLContext)SDL_GL_GetCurrentContext(); |
| #endif |
| |
| KMSDRM_DestroySurfaces(_this, window); |
| |
| windata->gs = KMSDRM_gbm_surface_create(viddata->gbm_dev, width, height, surface_fmt, surface_flags); |
| |
| if (!windata->gs) { |
| return SDL_SetError("Could not create GBM surface"); |
| } |
| |
| #if SDL_VIDEO_OPENGL_EGL |
| windata->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType)windata->gs); |
| |
| if (windata->egl_surface == EGL_NO_SURFACE) { |
| return SDL_SetError("Could not create EGL window surface"); |
| } |
| |
| SDL_EGL_MakeCurrent(_this, windata->egl_surface, egl_context); |
| |
| windata->egl_surface_dirty = SDL_FALSE; |
| #endif |
| |
| return 0; |
| } |
| |
| int |
| KMSDRM_VideoInit(_THIS) |
| { |
| int ret = 0; |
| SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| SDL_DisplayData *dispdata = NULL; |
| drmModeRes *resources = NULL; |
| drmModeEncoder *encoder = NULL; |
| char devname[32]; |
| SDL_VideoDisplay display = {0}; |
| uint32_t display_plane_id, cursor_plane_id; |
| |
| dispdata = (SDL_DisplayData *) SDL_calloc(1, sizeof(SDL_DisplayData)); |
| dispdata->display_plane = calloc(1, sizeof(*dispdata->display_plane)); |
| dispdata->cursor_plane = calloc(1, sizeof(*dispdata->cursor_plane)); |
| dispdata->crtc = calloc(1, sizeof(*dispdata->crtc)); |
| dispdata->connector = calloc(1, sizeof(*dispdata->connector)); |
| |
| dispdata->atomic_flags = 0; |
| dispdata->atomic_req = NULL; |
| dispdata->kms_fence = NULL; |
| dispdata->gpu_fence = NULL; |
| dispdata->kms_out_fence_fd = -1; |
| dispdata->kms_in_fence_fd = -1; |
| |
| if (!dispdata) { |
| return SDL_OutOfMemory(); |
| } |
| |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "KMSDRM_VideoInit()"); |
| |
| /* Open /dev/dri/cardNN */ |
| SDL_snprintf(devname, sizeof(devname), "/dev/dri/card%d", viddata->devindex); |
| |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Opening device %s", devname); |
| viddata->drm_fd = open(devname, O_RDWR | O_CLOEXEC); |
| |
| if (viddata->drm_fd < 0) { |
| ret = SDL_SetError("Could not open %s", devname); |
| goto cleanup; |
| } |
| |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Opened DRM FD (%d)", viddata->drm_fd); |
| |
| viddata->gbm_dev = KMSDRM_gbm_create_device(viddata->drm_fd); |
| if (!viddata->gbm_dev) { |
| ret = SDL_SetError("Couldn't create gbm device."); |
| goto cleanup; |
| } |
| |
| /* Get all of the available connectors / devices / crtcs */ |
| resources = KMSDRM_drmModeGetResources(viddata->drm_fd); |
| if (!resources) { |
| ret = SDL_SetError("drmModeGetResources(%d) failed", viddata->drm_fd); |
| goto cleanup; |
| } |
| |
| /* Iterate on the available connectors to find a connected connector. */ |
| for (int i = 0; i < resources->count_connectors; i++) { |
| drmModeConnector *conn = KMSDRM_drmModeGetConnector(viddata->drm_fd, resources->connectors[i]); |
| |
| if (!conn) { |
| continue; |
| } |
| |
| if (conn->connection == DRM_MODE_CONNECTED && conn->count_modes) { |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Found connector %d with %d modes.", |
| conn->connector_id, conn->count_modes); |
| dispdata->connector->connector = conn; |
| break; |
| } |
| |
| KMSDRM_drmModeFreeConnector(conn); |
| } |
| |
| if (!dispdata->connector->connector) { |
| ret = SDL_SetError("No currently active connector found."); |
| goto cleanup; |
| } |
| |
| /* Try to find the connector's current encoder */ |
| for (int i = 0; i < resources->count_encoders; i++) { |
| encoder = KMSDRM_drmModeGetEncoder(viddata->drm_fd, resources->encoders[i]); |
| |
| if (!encoder) { |
| continue; |
| } |
| |
| if (encoder->encoder_id == dispdata->connector->connector->encoder_id) { |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Found encoder %d.", encoder->encoder_id); |
| break; |
| } |
| |
| KMSDRM_drmModeFreeEncoder(encoder); |
| encoder = NULL; |
| } |
| |
| if (!encoder) { |
| /* No encoder was connected, find the first supported one */ |
| for (int i = 0, j; i < resources->count_encoders; i++) { |
| encoder = KMSDRM_drmModeGetEncoder(viddata->drm_fd, resources->encoders[i]); |
| |
| if (!encoder) { |
| continue; |
| } |
| |
| for (j = 0; j < dispdata->connector->connector->count_encoders; j++) { |
| if (dispdata->connector->connector->encoders[j] == encoder->encoder_id) { |
| break; |
| } |
| } |
| |
| if (j != dispdata->connector->connector->count_encoders) { |
| break; |
| } |
| |
| KMSDRM_drmModeFreeEncoder(encoder); |
| encoder = NULL; |
| } |
| } |
| |
| if (!encoder) { |
| ret = SDL_SetError("No connected encoder found."); |
| goto cleanup; |
| } |
| |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Found encoder %d.", encoder->encoder_id); |
| |
| /* Try to find a CRTC connected to this encoder */ |
| dispdata->crtc->crtc = KMSDRM_drmModeGetCrtc(viddata->drm_fd, encoder->crtc_id); |
| |
| /* If no CRTC was connected to the encoder, find the first CRTC that is supported by the encoder, and use that. */ |
| if (!dispdata->crtc->crtc) { |
| for (int i = 0; i < resources->count_crtcs; i++) { |
| if (encoder->possible_crtcs & (1 << i)) { |
| encoder->crtc_id = resources->crtcs[i]; |
| dispdata->crtc->crtc = KMSDRM_drmModeGetCrtc(viddata->drm_fd, encoder->crtc_id); |
| break; |
| } |
| } |
| } |
| |
| if (!dispdata->crtc->crtc) { |
| ret = SDL_SetError("No CRTC found."); |
| goto cleanup; |
| } |
| |
| /* Figure out the default mode to be set. If the current CRTC's mode isn't |
| valid, select the first mode supported by the connector |
| |
| FIXME find first mode that specifies DRM_MODE_TYPE_PREFERRED */ |
| dispdata->mode = dispdata->crtc->crtc->mode; |
| |
| if (dispdata->crtc->crtc->mode_valid == 0) { |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, |
| "Current mode is invalid, selecting connector's mode #0."); |
| dispdata->mode = dispdata->connector->connector->modes[0]; |
| } |
| |
| /* Setup the single display that's available */ |
| |
| display.desktop_mode.w = dispdata->mode.hdisplay; |
| display.desktop_mode.h = dispdata->mode.vdisplay; |
| display.desktop_mode.refresh_rate = dispdata->mode.vrefresh; |
| #if 1 |
| display.desktop_mode.format = SDL_PIXELFORMAT_ARGB8888; |
| #else |
| /* FIXME */ |
| drmModeFB *fb = drmModeGetFB(viddata->drm_fd, dispdata->crtc->buffer_id); |
| display.desktop_mode.format = drmToSDLPixelFormat(fb->bpp, fb->depth); |
| drmModeFreeFB(fb); |
| #endif |
| |
| /* DRM mode index for the desktop mode is needed to complete desktop mode init NOW, |
| so look for it in the DRM modes array. |
| This is needed because SetDisplayMode() uses the mode index, and some programs |
| change to fullscreen desktop video mode as they start. */ |
| for (int i = 0; i < dispdata->connector->connector->count_modes; i++) { |
| if (!SDL_memcmp(dispdata->connector->connector->modes + i, &dispdata->crtc->crtc->mode, sizeof(drmModeModeInfo))) { |
| SDL_DisplayModeData *modedata = SDL_calloc(1, sizeof(SDL_DisplayModeData)); |
| if (modedata) { |
| modedata->mode_index = i; |
| display.desktop_mode.driverdata = modedata; |
| } |
| } |
| } |
| |
| display.current_mode = display.desktop_mode; |
| display.driverdata = dispdata; |
| SDL_AddVideoDisplay(&display); |
| |
| /****************/ |
| /* Atomic block */ |
| /****************/ |
| |
| ret = KMSDRM_drmSetClientCap(viddata->drm_fd, DRM_CLIENT_CAP_ATOMIC, 1); |
| if (ret) { |
| ret = SDL_SetError("no atomic modesetting support."); |
| goto cleanup; |
| } |
| |
| ret = KMSDRM_drmSetClientCap(viddata->drm_fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1); |
| if (ret) { |
| ret = SDL_SetError("no universal planes support."); |
| goto cleanup; |
| } |
| |
| /* Use this if you ever need to see info on all available planes. */ |
| #if 0 |
| get_planes_info(_this); |
| #endif |
| |
| /* Get DISPLAY PLANE (simply a primary plane that can use our CRTC). |
| It has to be a PRIMARY plane because there's no guarantee that |
| we have overlays in every hardware: we can really only count |
| on having one primary plane). */ |
| display_plane_id = get_plane_id(_this, resources, DRM_PLANE_TYPE_PRIMARY); |
| if (!display_plane_id) { |
| ret = SDL_SetError("could not find a suitable display plane."); |
| goto cleanup; |
| } |
| dispdata->display_plane->plane = KMSDRM_drmModeGetPlane(viddata->drm_fd, display_plane_id); |
| |
| /* Get DISPLAY PLANE properties */ |
| dispdata->display_plane->props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, |
| dispdata->display_plane->plane->plane_id, DRM_MODE_OBJECT_PLANE); |
| |
| dispdata->display_plane->props_info = SDL_calloc(dispdata->display_plane->props->count_props, |
| sizeof(dispdata->display_plane->props_info)); |
| |
| for (int i = 0; i < dispdata->display_plane->props->count_props; i++) { |
| dispdata->display_plane->props_info[i] = KMSDRM_drmModeGetProperty(viddata->drm_fd, |
| dispdata->display_plane->props->props[i]); |
| } |
| |
| /* Get CURSOR PLANE (simply a cursor plane that can use our CRTC). |
| Not having a cursor plane available should not be fatal, just throw an error. |
| All functions using this plane should first test if it exists. */ |
| cursor_plane_id = get_plane_id(_this, resources, DRM_PLANE_TYPE_CURSOR); |
| if (!cursor_plane_id) { |
| SDL_SetError("could not find a suitable cursor plane."); |
| } |
| dispdata->cursor_plane->plane = KMSDRM_drmModeGetPlane(viddata->drm_fd, cursor_plane_id); |
| |
| /* Get CURSOR PLANE properties */ |
| if (dispdata->cursor_plane->plane) { |
| dispdata->cursor_plane->props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, |
| dispdata->cursor_plane->plane->plane_id, DRM_MODE_OBJECT_PLANE); |
| |
| dispdata->cursor_plane->props_info = SDL_calloc(dispdata->cursor_plane->props->count_props, |
| sizeof(dispdata->cursor_plane->props_info)); |
| |
| for (int i = 0; i < dispdata->cursor_plane->props->count_props; i++) { |
| dispdata->cursor_plane->props_info[i] = KMSDRM_drmModeGetProperty(viddata->drm_fd, |
| dispdata->cursor_plane->props->props[i]); |
| } |
| } |
| |
| /* Get CRTC properties */ |
| dispdata->crtc->props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, |
| dispdata->crtc->crtc->crtc_id, DRM_MODE_OBJECT_CRTC); |
| |
| dispdata->crtc->props_info = SDL_calloc(dispdata->crtc->props->count_props, |
| sizeof(dispdata->crtc->props_info)); |
| |
| for (int i = 0; i < dispdata->crtc->props->count_props; i++) { |
| dispdata->crtc->props_info[i] = KMSDRM_drmModeGetProperty(viddata->drm_fd, |
| dispdata->crtc->props->props[i]); |
| } |
| |
| /* Get connector properties */ |
| dispdata->connector->props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, |
| dispdata->connector->connector->connector_id, DRM_MODE_OBJECT_CONNECTOR); |
| |
| dispdata->connector->props_info = SDL_calloc(dispdata->connector->props->count_props, |
| sizeof(dispdata->connector->props_info)); |
| |
| for (int i = 0; i < dispdata->connector->props->count_props; i++) { |
| dispdata->connector->props_info[i] = KMSDRM_drmModeGetProperty(viddata->drm_fd, |
| dispdata->connector->props->props[i]); |
| } |
| |
| /*********************/ |
| /* Atomic block ends */ |
| /*********************/ |
| |
| #ifdef SDL_INPUT_LINUXEV |
| SDL_EVDEV_Init(); |
| #endif |
| |
| KMSDRM_InitMouse(_this); |
| |
| cleanup: |
| |
| if (encoder) |
| KMSDRM_drmModeFreeEncoder(encoder); |
| if (resources) |
| KMSDRM_drmModeFreeResources(resources); |
| if (ret != 0) { |
| /* Error (complete) cleanup */ |
| if (dispdata->connector->connector) { |
| KMSDRM_drmModeFreeConnector(dispdata->connector->connector); |
| dispdata->connector = NULL; |
| } |
| if (dispdata->crtc->crtc) { |
| KMSDRM_drmModeFreeCrtc(dispdata->crtc->crtc); |
| dispdata->crtc = NULL; |
| } |
| if (viddata->gbm_dev) { |
| KMSDRM_gbm_device_destroy(viddata->gbm_dev); |
| viddata->gbm_dev = NULL; |
| } |
| if (viddata->drm_fd >= 0) { |
| close(viddata->drm_fd); |
| viddata->drm_fd = -1; |
| } |
| SDL_free(dispdata); |
| } |
| |
| return ret; |
| } |
| |
| /* The driverdata pointers, like dispdata, viddata, etc... |
| are freed by SDL internals, so not our job. */ |
| void |
| KMSDRM_VideoQuit(_THIS) |
| { |
| int ret; |
| SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "KMSDRM_VideoQuit()"); |
| |
| /* Clear out the window list */ |
| SDL_free(viddata->windows); |
| viddata->windows = NULL; |
| viddata->max_windows = 0; |
| viddata->num_windows = 0; |
| |
| /* Restore original buffer. Probably not needed |
| b/c DestroySurfaces also points the display plane |
| to the original buffer before destrying the GBM surface. */ |
| if (viddata->drm_fd >= 0 && dispdata && dispdata->connector->connector && |
| dispdata->crtc->crtc) |
| { |
| /* Issue sync/blocking atomic commit that points crtc to original buffer. |
| SDL_video has already called SetDisplayMode() to set the original |
| display mode at this point. |
| We are not doing pageflips anymore, so we can't rely on the SwapWindow() |
| atomic_commit() call, hence we are explicitly calling atomic_commit() here. |
| */ |
| |
| drm_atomic_setbuffer(_this, dispdata->display_plane, |
| dispdata->crtc->crtc->buffer_id); |
| |
| ret = drm_atomic_commit(_this, SDL_TRUE); |
| |
| if (ret != 0) |
| { |
| SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not restore original buffer and videomode"); |
| } |
| } |
| |
| if (_this->gl_config.driver_loaded) { |
| SDL_GL_UnloadLibrary(); |
| } |
| |
| /* Free connector */ |
| if (dispdata && dispdata->connector) { |
| if (dispdata->connector->connector) { |
| KMSDRM_drmModeFreeConnector(dispdata->connector->connector); |
| dispdata->connector->connector = NULL; |
| } |
| if (dispdata->connector->props_info) { |
| SDL_free(dispdata->connector->props_info); |
| dispdata->connector->props_info = NULL; |
| } |
| SDL_free(dispdata->connector); |
| dispdata->connector = NULL; |
| } |
| |
| /* Free CRTC */ |
| if (dispdata && dispdata->crtc) { |
| if (dispdata->crtc->crtc) { |
| KMSDRM_drmModeFreeCrtc(dispdata->crtc->crtc); |
| dispdata->crtc->crtc = NULL; |
| } |
| if (dispdata->crtc->props_info) { |
| SDL_free(dispdata->crtc->props_info); |
| dispdata->crtc->props_info = NULL; |
| } |
| SDL_free(dispdata->crtc); |
| dispdata->crtc = NULL; |
| } |
| |
| /* Free main display plane */ |
| if (dispdata && dispdata->display_plane) { |
| if (dispdata->display_plane->props_info) { |
| SDL_free(dispdata->display_plane->props_info); |
| dispdata->display_plane->props_info = NULL; |
| } |
| SDL_free(dispdata->display_plane); |
| dispdata->display_plane = NULL; |
| } |
| |
| /* Free main cursor plane */ |
| if (dispdata && dispdata->cursor_plane) { |
| if (dispdata->cursor_plane->props_info) { |
| SDL_free(dispdata->cursor_plane->props_info); |
| dispdata->cursor_plane->props_info = NULL; |
| } |
| SDL_free(dispdata->cursor_plane); |
| dispdata->cursor_plane = NULL; |
| } |
| |
| /* Destroy GBM device. GBM surface is destroyed by DestroySurfaces(). */ |
| if (viddata->gbm_dev) { |
| KMSDRM_gbm_device_destroy(viddata->gbm_dev); |
| viddata->gbm_dev = NULL; |
| } |
| if (viddata->drm_fd >= 0) { |
| close(viddata->drm_fd); |
| SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Closed DRM FD %d", viddata->drm_fd); |
| viddata->drm_fd = -1; |
| } |
| #ifdef SDL_INPUT_LINUXEV |
| SDL_EVDEV_Quit(); |
| #endif |
| } |
| |
| void |
| KMSDRM_GetDisplayModes(_THIS, SDL_VideoDisplay * display) |
| { |
| SDL_DisplayData *dispdata = display->driverdata; |
| drmModeConnector *conn = dispdata->connector->connector; |
| SDL_DisplayMode mode; |
| |
| for (int i = 0; i < conn->count_modes; i++) { |
| SDL_DisplayModeData *modedata = SDL_calloc(1, sizeof(SDL_DisplayModeData)); |
| |
| if (modedata) { |
| modedata->mode_index = i; |
| } |
| |
| mode.w = conn->modes[i].hdisplay; |
| mode.h = conn->modes[i].vdisplay; |
| mode.refresh_rate = conn->modes[i].vrefresh; |
| mode.format = SDL_PIXELFORMAT_ARGB8888; |
| mode.driverdata = modedata; |
| |
| if (!SDL_AddDisplayMode(display, &mode)) { |
| SDL_free(modedata); |
| } |
| } |
| } |
| |
| int |
| KMSDRM_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode) |
| { |
| SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata; |
| SDL_DisplayModeData *modedata = (SDL_DisplayModeData *)mode->driverdata; |
| |
| if (!modedata) { |
| return SDL_SetError("Mode doesn't have an associated index"); |
| } |
| |
| /* Set new videomode for the connector in use. */ |
| drm_atomic_modeset(_this, modedata->mode_index); |
| |
| for (int i = 0; i < viddata->num_windows; i++) { |
| SDL_Window *window = viddata->windows[i]; |
| |
| /* Re-create GBM and EGL surfaces everytime we change the display mode. */ |
| KMSDRM_DestroySurfaces(_this, window); |
| KMSDRM_CreateSurfaces(_this, window); |
| |
| /* Tell app about the resize */ |
| SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, mode->w, mode->h); |
| } |
| |
| return 0; |
| } |
| |
| int |
| KMSDRM_CreateWindow(_THIS, SDL_Window * window) |
| { |
| SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata; |
| SDL_WindowData *windata; |
| |
| #if SDL_VIDEO_OPENGL_EGL |
| if (!_this->egl_data) { |
| if (SDL_GL_LoadLibrary(NULL) < 0) { |
| goto error; |
| } |
| } |
| #endif |
| |
| /* Allocate window internal data */ |
| windata = (SDL_WindowData *)SDL_calloc(1, sizeof(SDL_WindowData)); |
| |
| if (!windata) { |
| SDL_OutOfMemory(); |
| goto error; |
| } |
| |
| /* Init fields. */ |
| windata->egl_surface_dirty = SDL_FALSE; |
| |
| /* First remember that certain functions in SDL_Video.c will call *_SetDisplayMode when the |
| SDL_WINDOW_FULLSCREEN is set and SDL_WINDOW_FULLSCREEN_DESKTOP is not set. |
| So I am determining here that the behavior when creating an SDL_Window() in KMSDRM, is: |
| |
| -Creating a normal non-fullscreen window won't change the display mode. |
| They won't cover the full screen area, either, because that breaks the image aspect ratio. |
| -Creating a SDL_WINDOW_FULLSCREEN window will change the display mode, |
| because SDL_WINDOW_FULLSCREEN flag is set. |
| -Creating a SDL_WINDOW_FULLSCREEN_DESKTOP window will not change the display mode, |
| because even if the SDL_WINDOW_FULLSCREEN flag is set, SDL_WINDOW_FULLSCREEN_DESKTOP prevents it. |
| |
| If we ever decide that we want to have normal windows (non-SDL_WINDOW_FULLSCREEN) should cause a display |
| mode change, we could force the SDL_WINDOW_FULLSCREEN flag again on every window. |
| But remember that it will break games that check if a window is FULLSCREEN or not before setting |
| a fullscreen mode with SDL_SetWindowFullscreen(), like sm64ex (sm64 pc port). |
| If we ever decide that we want normal windows to cover the whole screen area, we can force window->w |
| and window->h to the original display mode dimensions. |
| |
| Commented reference code for all this: |
| |
| window->flags |= (SDL_WINDOW_FULLSCREEN | SDL_WINDOW_OPENGL); |
| |
| SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window); |
| |
| window->w = display->desktop_mode.w; |
| window->h = display->desktop_mode.h; */ |
| |
| /* Setup driver data for this window */ |
| windata->viddata = viddata; |
| window->driverdata = windata; |
| |
| if (KMSDRM_CreateSurfaces(_this, window)) { |
| goto error; |
| } |
| |
| /* Add window to the internal list of tracked windows. Note, while it may |
| seem odd to support multiple fullscreen windows, some apps create an |
| extra window as a dummy surface when working with multiple contexts */ |
| if (viddata->num_windows >= viddata->max_windows) { |
| int new_max_windows = viddata->max_windows + 1; |
| viddata->windows = (SDL_Window **)SDL_realloc(viddata->windows, |
| new_max_windows * sizeof(SDL_Window *)); |
| viddata->max_windows = new_max_windows; |
| |
| if (!viddata->windows) { |
| SDL_OutOfMemory(); |
| goto error; |
| } |
| } |
| |
| viddata->windows[viddata->num_windows++] = window; |
| |
| /* Focus on the newly created window */ |
| SDL_SetMouseFocus(window); |
| SDL_SetKeyboardFocus(window); |
| |
| return 0; |
| |
| error: |
| KMSDRM_DestroyWindow(_this, window); |
| |
| return -1; |
| } |
| |
| void |
| KMSDRM_DestroyWindow(_THIS, SDL_Window * window) |
| { |
| SDL_WindowData *windata = (SDL_WindowData *) window->driverdata; |
| SDL_VideoData *viddata; |
| if (!windata) { |
| return; |
| } |
| |
| /* Remove from the internal window list */ |
| viddata = windata->viddata; |
| |
| for (int i = 0; i < viddata->num_windows; i++) { |
| if (viddata->windows[i] == window) { |
| viddata->num_windows--; |
| |
| for (int j = i; j < viddata->num_windows; j++) { |
| viddata->windows[j] = viddata->windows[j + 1]; |
| } |
| |
| break; |
| } |
| } |
| |
| KMSDRM_DestroySurfaces(_this, window); |
| |
| window->driverdata = NULL; |
| |
| SDL_free(windata); |
| } |
| |
| int |
| KMSDRM_CreateWindowFrom(_THIS, SDL_Window * window, const void *data) |
| { |
| return -1; |
| } |
| |
| void |
| KMSDRM_SetWindowTitle(_THIS, SDL_Window * window) |
| { |
| } |
| void |
| KMSDRM_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon) |
| { |
| } |
| void |
| KMSDRM_SetWindowPosition(_THIS, SDL_Window * window) |
| { |
| } |
| void |
| KMSDRM_SetWindowSize(_THIS, SDL_Window * window) |
| { |
| } |
| void |
| KMSDRM_ShowWindow(_THIS, SDL_Window * window) |
| { |
| } |
| void |
| KMSDRM_HideWindow(_THIS, SDL_Window * window) |
| { |
| } |
| void |
| KMSDRM_RaiseWindow(_THIS, SDL_Window * window) |
| { |
| } |
| void |
| KMSDRM_MaximizeWindow(_THIS, SDL_Window * window) |
| { |
| } |
| void |
| KMSDRM_MinimizeWindow(_THIS, SDL_Window * window) |
| { |
| } |
| void |
| KMSDRM_RestoreWindow(_THIS, SDL_Window * window) |
| { |
| } |
| void |
| KMSDRM_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed) |
| { |
| |
| } |
| |
| /*****************************************************************************/ |
| /* SDL Window Manager function */ |
| /*****************************************************************************/ |
| SDL_bool |
| KMSDRM_GetWindowWMInfo(_THIS, SDL_Window * window, struct SDL_SysWMinfo *info) |
| { |
| if (info->version.major <= SDL_MAJOR_VERSION) { |
| return SDL_TRUE; |
| } else { |
| SDL_SetError("application not compiled with SDL %d.%d\n", |
| SDL_MAJOR_VERSION, SDL_MINOR_VERSION); |
| return SDL_FALSE; |
| } |
| |
| /* Failed to get window manager information */ |
| return SDL_FALSE; |
| } |
| |
| #endif /* SDL_VIDEO_DRIVER_KMSDRM */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
