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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-w32gdi.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-w32gdi.c')
| -rw-r--r-- | src/gamma-w32gdi.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/gamma-w32gdi.c b/src/gamma-w32gdi.c index ee603e6..c07ce91 100644 --- a/src/gamma-w32gdi.c +++ b/src/gamma-w32gdi.c @@ -153,6 +153,14 @@ w32gdi_set_temperature(w32gdi_state_t *state, WORD *gamma_g = &gamma_ramps[1*GAMMA_RAMP_SIZE]; WORD *gamma_b = &gamma_ramps[2*GAMMA_RAMP_SIZE]; + /* Initialize gamma ramps to pure state */ + for (int i = 0; i < GAMMA_RAMP_SIZE; i++) { + WORD value = (double)i/GAMMA_RAMP_SIZE * (UINT16_MAX+1); + gamma_r[i] = value; + gamma_g[i] = value; + gamma_b[i] = value; + } + colorramp_fill(gamma_r, gamma_g, gamma_b, GAMMA_RAMP_SIZE, setting); |