diff options
| -rw-r--r-- | include/drm/drm.h | 1 | ||||
| -rw-r--r-- | include/drm/drm_mode.h | 39 | ||||
| -rw-r--r-- | xf86drmMode.c | 12 | ||||
| -rw-r--r-- | xf86drmMode.h | 20 |
4 files changed, 72 insertions, 0 deletions
diff --git a/include/drm/drm.h b/include/drm/drm.h index 5408c08c..48221599 100644 --- a/include/drm/drm.h +++ b/include/drm/drm.h @@ -697,6 +697,7 @@ struct drm_gem_open { #define DRM_IOCTL_MODE_ADDFB DRM_IOWR(0xAE, struct drm_mode_fb_cmd) #define DRM_IOCTL_MODE_RMFB DRM_IOWR(0xAF, unsigned int) #define DRM_IOCTL_MODE_PAGE_FLIP DRM_IOWR(0xB0, struct drm_mode_crtc_page_flip) +#define DRM_IOCTL_MODE_DIRTYFB DRM_IOWR(0xB1, struct drm_mode_fb_dirty_cmd) /*@}*/ diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h index 1fd30266..dfc390ea 100644 --- a/include/drm/drm_mode.h +++ b/include/drm/drm_mode.h @@ -222,6 +222,45 @@ struct drm_mode_fb_cmd { __u32 handle; }; +#define DRM_MODE_FB_DIRTY_ANNOTATE_COPY 0x01 +#define DRM_MODE_FB_DIRTY_ANNOTATE_FILL 0x02 +#define DRM_MODE_FB_DIRTY_FLAGS 0x03 + +/* + * Mark a region of a framebuffer as dirty. + * + * Some hardware does not automatically update display contents + * as a hardware or software draw to a framebuffer. This ioctl + * allows userspace to tell the kernel and the hardware what + * regions of the framebuffer have changed. + * + * The kernel or hardware is free to update more then just the + * region specified by the clip rects. The kernel or hardware + * may also delay and/or coalesce several calls to dirty into a + * single update. + * + * Userspace may annotate the updates, the annotates are a + * promise made by the caller that the change is either a copy + * of pixels or a fill of a single color in the region specified. + * + * If the DRM_MODE_FB_DIRTY_ANNOTATE_COPY flag is given then + * the number of updated regions are half of num_clips given, + * where the clip rects are paired in src and dst. The width and + * height of each one of the pairs must match. + * + * If the DRM_MODE_FB_DIRTY_ANNOTATE_FILL flag is given the caller + * promises that the region specified of the clip rects is filled + * completely with a single color as given in the color argument. + */ + +struct drm_mode_fb_dirty_cmd { + __u32 fb_id; + __u32 flags; + __u32 color; + __u32 num_clips; + __u64 clips_ptr; +}; + struct drm_mode_mode_cmd { __u32 connector_id; struct drm_mode_modeinfo mode; diff --git a/xf86drmMode.c b/xf86drmMode.c index 317aa47f..ca36b71b 100644 --- a/xf86drmMode.c +++ b/xf86drmMode.c @@ -241,6 +241,18 @@ drmModeFBPtr drmModeGetFB(int fd, uint32_t buf) return r; } +int drmModeDirtyFB(int fd, uint32_t bufferId, + drmModeClipPtr clips, uint32_t num_clips) +{ + struct drm_mode_fb_dirty_cmd dirty = { 0 }; + + dirty.fb_id = bufferId; + dirty.clips_ptr = VOID2U64(clips); + dirty.num_clips = num_clips; + + return drmIoctl(fd, DRM_IOCTL_MODE_DIRTYFB, &dirty); +} + /* * Crtc functions diff --git a/xf86drmMode.h b/xf86drmMode.h index 705369fe..5a4ce637 100644 --- a/xf86drmMode.h +++ b/xf86drmMode.h @@ -145,6 +145,17 @@ #endif /* _DRM_MODE_H */ + +/* + * Feature defines + * + * Just because these are defined doesn't mean that the kernel + * can do that feature, its just for new code vs old libdrm. + */ +#define DRM_MODE_FEATURE_KMS 1 +#define DRM_MODE_FEATURE_DIRTYFB 1 + + typedef struct _drmModeRes { int count_fbs; @@ -185,6 +196,8 @@ typedef struct _drmModeFB { uint32_t handle; } drmModeFB, *drmModeFBPtr; +typedef struct drm_clip_rect drmModeClip, *drmModeClipPtr; + typedef struct _drmModePropertyBlob { uint32_t id; uint32_t length; @@ -293,6 +306,13 @@ extern int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth, */ extern int drmModeRmFB(int fd, uint32_t bufferId); +/** + * Mark a region of a framebuffer as dirty. + */ +extern int drmModeDirtyFB(int fd, uint32_t bufferId, + drmModeClipPtr clips, uint32_t num_clips); + + /* * Crtc functions */ |