From 9b299132ef8912910df5a90b1628cc3af1efc54d Mon Sep 17 00:00:00 2001 From: Jon Lund Steffensen Date: Sun, 28 Dec 2014 22:58:54 -0500 Subject: 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(). --- src/gamma-vidmode.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'src/gamma-vidmode.c') diff --git a/src/gamma-vidmode.c b/src/gamma-vidmode.c index 58a552f..a25b06e 100644 --- a/src/gamma-vidmode.c +++ b/src/gamma-vidmode.c @@ -180,6 +180,14 @@ vidmode_set_temperature(vidmode_state_t *state, uint16_t *gamma_g = &gamma_ramps[1*state->ramp_size]; uint16_t *gamma_b = &gamma_ramps[2*state->ramp_size]; + /* Initialize gamma ramps to pure state */ + for (int i = 0; i < state->ramp_size; i++) { + uint16_t value = (double)i/state->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, state->ramp_size, setting); -- cgit v1.2.3-70-g09d2