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Add atomic gamma setting

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This commit is contained in:
Vincent Vanlaer 2018-02-01 20:27:35 +01:00
parent 34489dca16
commit cc1229e75e
7 changed files with 55 additions and 3 deletions
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32
backend/drm/atomic.c
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@ -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,
};