diff options
Diffstat (limited to 'backend/drm/atomic.c')
| -rw-r--r-- | backend/drm/atomic.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/backend/drm/atomic.c b/backend/drm/atomic.c index 54024d86..a8003492 100644 --- a/backend/drm/atomic.c +++ b/backend/drm/atomic.c @@ -1,3 +1,4 @@ +#include <stdlib.h> #include <gbm.h> #include <xf86drm.h> #include <xf86drmMode.h> @@ -195,9 +196,40 @@ static bool atomic_crtc_move_cursor(struct wlr_drm_backend *drm, return atomic_end(drm->fd, &atom); } +static bool atomic_crtc_set_gamma(struct wlr_drm_backend *drm, + struct wlr_drm_crtc *crtc, uint16_t *r, uint16_t *g, uint16_t *b, + uint32_t size) { + struct drm_color_lut *gamma = calloc(sizeof(struct drm_color_lut), size); + + for (uint32_t i = 0; i < size; i++) { + gamma[i].red = r[i]; + gamma[i].green = g[i]; + gamma[i].blue = b[i]; + } + + if (crtc->gamma_lut != 0) { + drmModeDestroyPropertyBlob(drm->fd, crtc->gamma_lut); + } + + if (drmModeCreatePropertyBlob(drm->fd, gamma, + sizeof(struct drm_color_lut) * size, &crtc->gamma_lut)) { + wlr_log_errno(L_ERROR, "Unable to create property blob"); + return false; + } + + free(gamma); + + struct atomic atom; + + atomic_begin(crtc, &atom); + atomic_add(&atom, crtc->id, crtc->props.gamma_lut, crtc->gamma_lut); + return atomic_end(drm->fd, &atom); +} + const struct wlr_drm_interface atomic_iface = { .conn_enable = atomic_conn_enable, .crtc_pageflip = atomic_crtc_pageflip, .crtc_set_cursor = atomic_crtc_set_cursor, .crtc_move_cursor = atomic_crtc_move_cursor, + .crtc_set_gamma = atomic_crtc_set_gamma, }; |