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Reinitialize only changed DRM outputs after setting mode on one

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This commit is contained in:
Versus Void 2017-10-22 10:15:02 +00:00
parent ecb2a2b0d3
commit 3c31209a97
1 changed files with 17 additions and 6 deletions
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23
backend/drm/drm.c
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@ -259,7 +259,8 @@ static void wlr_drm_connector_enable(struct wlr_output *output, bool enable) {
}
}
static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in) {
static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in,
bool *changed_outputs) {
// overlay, primary, cursor
for (int type = 0; type < 3; ++type) {
if (drm->num_type_planes[type] == 0) {
@ -298,6 +299,7 @@ static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in)
struct wlr_drm_plane *new = &drm->type_planes[type][crtc_res[i]];
if (*old != new) {
changed_outputs[crtc_res[i]] = true;
if (*old) {
wlr_drm_surface_finish(&(*old)->surf);
}
@ -308,7 +310,8 @@ static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in)
}
}
static void realloc_crtcs(struct wlr_drm_backend *drm, struct wlr_drm_connector *conn) {
static void realloc_crtcs(struct wlr_drm_backend *drm,
struct wlr_drm_connector *conn, bool *changed_outputs) {
uint32_t crtc[drm->num_crtcs];
uint32_t crtc_res[drm->num_crtcs];
uint32_t possible_crtc[wl_list_length(&drm->outputs)];
@ -356,12 +359,15 @@ static void realloc_crtcs(struct wlr_drm_backend *drm, struct wlr_drm_connector
return;
}
changed_outputs[index] = true;
for (size_t i = 0; i < drm->num_crtcs; ++i) {
if (crtc_res[i] == UNMATCHED) {
continue;
}
if (crtc_res[i] != crtc[i]) {
changed_outputs[crtc_res[i]] = true;
struct wlr_drm_connector *c;
size_t pos = 0;
wl_list_for_each(c, &drm->outputs, link) {
@ -374,7 +380,7 @@ static void realloc_crtcs(struct wlr_drm_backend *drm, struct wlr_drm_connector
}
}
realloc_planes(drm, crtc_res);
realloc_planes(drm, crtc_res, changed_outputs);
}
static uint32_t get_possible_crtcs(int fd, uint32_t conn_id) {
@ -413,6 +419,7 @@ static bool wlr_drm_connector_set_mode(struct wlr_output *output,
struct wlr_output_mode *mode) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend;
bool changed_outputs[wl_list_length(&drm->outputs)];
wlr_log(L_INFO, "Modesetting '%s' with '%ux%u@%u mHz'", conn->output.name,
mode->width, mode->height, mode->refresh);
@ -422,7 +429,8 @@ static bool wlr_drm_connector_set_mode(struct wlr_output *output,
goto error_conn;
}
realloc_crtcs(drm, conn);
memset(changed_outputs, false, sizeof(changed_outputs));
realloc_crtcs(drm, conn, changed_outputs);
if (!conn->crtc) {
wlr_log(L_ERROR, "Unable to match %s with a CRTC", conn->output.name);
@ -445,12 +453,15 @@ static bool wlr_drm_connector_set_mode(struct wlr_output *output,
}
// Since realloc_crtcs can deallocate planes on OTHER outputs,
// we actually need to reinitalise all of them
// we actually need to reinitalise any than has changed
ssize_t output_index = -1;
wl_list_for_each(conn, &drm->outputs, link) {
output_index += 1;
struct wlr_output_mode *mode = conn->output.current_mode;
struct wlr_drm_crtc *crtc = conn->crtc;
if (conn->state != WLR_DRM_CONN_CONNECTED) {
if (conn->state != WLR_DRM_CONN_CONNECTED ||
!changed_outputs[output_index]) {
continue;
}