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output: make wlr_output_set_gamma atomic

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wlr_output_set_gamma is now double-buffered and applies the gamma LUT on
the next output commit.
This commit is contained in:
Simon Ser 2020-05-14 18:27:02 +02:00 • committed by Drew DeVault
parent 7693fdb8a7
commit 347bdb6d9a
9 changed files with 100 additions and 105 deletions
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13
types/wlr_gamma_control_v1.c
View file

@ -105,13 +105,16 @@ static void gamma_control_handle_set_gamma(struct wl_client *client,
uint16_t *g = table + ramp_size;
uint16_t *b = table + 2 * ramp_size;
bool ok = wlr_output_set_gamma(gamma_control->output, ramp_size, r, g, b);
if (!ok) {
wlr_output_set_gamma(gamma_control->output, ramp_size, r, g, b);
if (!wlr_output_test(gamma_control->output)) {
gamma_control_send_failed(gamma_control);
goto error_table;
}
free(table);
// Gamma LUT will be applied on next output commit
wlr_output_schedule_frame(gamma_control->output);
return;
error_table:
@ -175,7 +178,8 @@ static void gamma_control_manager_get_gamma_control(struct wl_client *client,
wl_list_init(&gamma_control->link);
if (!output->impl->set_gamma) {
size_t gamma_size = wlr_output_get_gamma_size(output);
if (gamma_size == 0) {
zwlr_gamma_control_v1_send_failed(gamma_control->resource);
gamma_control_destroy(gamma_control);
return;
@ -192,8 +196,7 @@ static void gamma_control_manager_get_gamma_control(struct wl_client *client,
wl_list_remove(&gamma_control->link);
wl_list_insert(&manager->controls, &gamma_control->link);
zwlr_gamma_control_v1_send_gamma_size(gamma_control->resource,
wlr_output_get_gamma_size(output));
zwlr_gamma_control_v1_send_gamma_size(gamma_control->resource, gamma_size);
}
static void gamma_control_manager_destroy(struct wl_client *client,

24
types/wlr_output.c
View file

@ -467,8 +467,15 @@ void wlr_output_set_damage(struct wlr_output *output,
output->pending.committed |= WLR_OUTPUT_STATE_DAMAGE;
}
static void output_state_clear_gamma_lut(struct wlr_output_state *state) {
free(state->gamma_lut);
state->gamma_lut = NULL;
state->committed &= ~WLR_OUTPUT_STATE_GAMMA_LUT;
}
static void output_state_clear(struct wlr_output_state *state) {
output_state_clear_buffer(state);
output_state_clear_gamma_lut(state);
pixman_region32_clear(&state->damage);
state->committed = 0;
}
@ -701,12 +708,21 @@ void wlr_output_send_present(struct wlr_output *output,
wlr_signal_emit_safe(&output->events.present, event);
}
bool wlr_output_set_gamma(struct wlr_output *output, size_t size,
void wlr_output_set_gamma(struct wlr_output *output, size_t size,
const uint16_t *r, const uint16_t *g, const uint16_t *b) {
if (!output->impl->set_gamma) {
return false;
output_state_clear_gamma_lut(&output->pending);
output->pending.gamma_lut_size = size;
output->pending.gamma_lut = malloc(3 * size * sizeof(uint16_t));
if (output->pending.gamma_lut == NULL) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
return;
}
return output->impl->set_gamma(output, size, r, g, b);
memcpy(output->pending.gamma_lut, r, size * sizeof(uint16_t));
memcpy(output->pending.gamma_lut + size, g, size * sizeof(uint16_t));
memcpy(output->pending.gamma_lut + 2 * size, b, size * sizeof(uint16_t));
output->pending.committed |= WLR_OUTPUT_STATE_GAMMA_LUT;
}
size_t wlr_output_get_gamma_size(struct wlr_output *output) {