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-rw-r--r--src/gamma-randr.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/gamma-randr.c b/src/gamma-randr.c
index 4f6b0f0..5ef7a4f 100644
--- a/src/gamma-randr.c
+++ b/src/gamma-randr.c
@@ -327,6 +327,14 @@ randr_set_temperature_for_crtc(randr_state_t *state, int crtc_num,
uint16_t *gamma_g = &gamma_ramps[1*ramp_size];
uint16_t *gamma_b = &gamma_ramps[2*ramp_size];
+ /* Initialize gamma ramps to pure state */
+ for (int i = 0; i < ramp_size; i++) {
+ uint16_t value = (double)i/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, ramp_size,
setting);