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| author | Jon Lund Steffensen <jonlst@gmail.com> | 2014-12-28 22:58:54 -0500 |
|---|---|---|
| committer | Jon Lund Steffensen <jonlst@gmail.com> | 2015-01-04 16:34:33 -0500 |
| commit | 9b299132ef8912910df5a90b1628cc3af1efc54d (patch) | |
| tree | c72a130835c069e060b24781675cee8b5dd531e2 /src/gamma-drm.c | |
| parent | redshift: Add gamma_is_valid function to check gamma (diff) | |
| download | redshift-ng-9b299132ef8912910df5a90b1628cc3af1efc54d.tar.gz redshift-ng-9b299132ef8912910df5a90b1628cc3af1efc54d.tar.bz2 redshift-ng-9b299132ef8912910df5a90b1628cc3af1efc54d.tar.xz | |
colorramp: Use supplied gamma ramps as initial value
This changes colorramp_fill() to base the ramp calculations on the
existing values in the supplied tables, instead of basing it on a pure
`i/size` value computed on the fly.
All gamma adjustment methods are changed to explicitly initialize the ramps
to the `i/size` value before calls to colorramp_fill().
Diffstat (limited to 'src/gamma-drm.c')
| -rw-r--r-- | src/gamma-drm.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/gamma-drm.c b/src/gamma-drm.c index cbdafe5..d431395 100644 --- a/src/gamma-drm.c +++ b/src/gamma-drm.c @@ -268,6 +268,16 @@ drm_set_temperature(drm_state_t *state, const color_setting_t *setting) } last_gamma_size = crtcs->gamma_size; } + + /* Initialize gamma ramps to pure state */ + int ramp_size = crtcs->gamma_size; + for (int i = 0; i < ramp_size; i++) { + uint16_t value = (double)i/ramp_size * (UINT16_MAX+1); + r_gamma[i] = value; + g_gamma[i] = value; + b_gamma[i] = value; + } + colorramp_fill(r_gamma, g_gamma, b_gamma, crtcs->gamma_size, setting); drmModeCrtcSetGamma(state->fd, crtcs->crtc_id, crtcs->gamma_size, |