diff options
Diffstat (limited to 'backend/drm/drm-util.c')
| -rw-r--r-- | backend/drm/drm-util.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/backend/drm/drm-util.c b/backend/drm/drm-util.c index 6159b5de..0f8ee18c 100644 --- a/backend/drm/drm-util.c +++ b/backend/drm/drm-util.c @@ -2,7 +2,9 @@ #include <string.h> #include <drm.h> #include <drm_mode.h> +#include <gbm.h> #include "backend/drm-util.h" +#include <wlr/util/log.h> int32_t calculate_refresh_rate(drmModeModeInfo *mode) { int32_t refresh = (mode->clock * 1000000LL / mode->htotal + @@ -133,6 +135,40 @@ const char *conn_get_name(uint32_t type_id) { } } +static void free_fb(struct gbm_bo *bo, void *data) { + uint32_t id = (uintptr_t)data; + + if (id) { + struct gbm_device *gbm = gbm_bo_get_device(bo); + drmModeRmFB(gbm_device_get_fd(gbm), id); + } +} + +uint32_t get_fb_for_bo(struct gbm_bo *bo) { + uint32_t id = (uintptr_t)gbm_bo_get_user_data(bo); + if (id) { + return id; + } + + struct gbm_device *gbm = gbm_bo_get_device(bo); + + int fd = gbm_device_get_fd(gbm); + uint32_t width = gbm_bo_get_width(bo); + uint32_t height = gbm_bo_get_height(bo); + uint32_t handles[4] = {gbm_bo_get_handle(bo).u32}; + uint32_t pitches[4] = {gbm_bo_get_stride(bo)}; + uint32_t offsets[4] = {gbm_bo_get_offset(bo, 0)}; + uint32_t format = gbm_bo_get_format(bo); + + if (drmModeAddFB2(fd, width, height, format, handles, pitches, offsets, &id, 0)) { + wlr_log_errno(L_ERROR, "Unable to add DRM framebuffer"); + } + + gbm_bo_set_user_data(bo, (void *)(uintptr_t)id, free_fb); + + return id; +} + static inline bool is_taken(size_t n, const uint32_t arr[static n], uint32_t key) { for (size_t i = 0; i < n; ++i) { if (arr[i] == key) { |