From e16c5504cd5debadf1349c0da296aaab225c0e38 Mon Sep 17 00:00:00 2001 From: Scott Anderson Date: Mon, 31 Jul 2017 10:04:34 +1200 Subject: [PATCH] Add planes. --- backend/drm/drm.c | 213 +++++++++++++++++++++++++++++----------------- backend/drm/drm.h | 34 ++++++-- 2 files changed, 158 insertions(+), 89 deletions(-) diff --git a/backend/drm/drm.c b/backend/drm/drm.c index b3bee244..09db530b 100644 --- a/backend/drm/drm.c +++ b/backend/drm/drm.c @@ -374,9 +374,13 @@ struct match_state { bool exit_early; }; -#define UNMATCHED (uint32_t)-1 +enum { + UNMATCHED = (uint32_t)-1, + SKIP = (uint32_t)-2, +}; /* + * skips: The number of SKIP elements encountered so far. * score: The number of resources we've matched so far. * replaced: The number of changes from the original solution. * i: The index of the current element. @@ -385,7 +389,7 @@ struct match_state { * * Returns whether we've set a new best element with this solution. */ -static bool match_obj_(struct match_state *st, size_t score, size_t replaced, size_t i) { +static bool match_obj_(struct match_state *st, size_t skips, size_t score, size_t replaced, size_t i) { // Finished if (i >= st->num_res) { if (score > st->score || (score == st->score && replaced < st->replaced)) { @@ -396,6 +400,9 @@ static bool match_obj_(struct match_state *st, size_t score, size_t replaced, si if (st->score == st->num_objs && st->replaced == 0) { st->exit_early = true; } + st->exit_early = (st->score == st->num_res - skips + || st->score == st->num_objs) + && st->replaced == 0; return true; } else { @@ -403,6 +410,11 @@ static bool match_obj_(struct match_state *st, size_t score, size_t replaced, si } } + if (st->orig[i] == SKIP) { + st->res[i] = SKIP; + return match_obj_(st, skips + 1, score, replaced, i + 1); + } + /* * Attempt to use the current solution first, to try and avoid * recalculating everything @@ -410,7 +422,7 @@ static bool match_obj_(struct match_state *st, size_t score, size_t replaced, si if (st->orig[i] != UNMATCHED && !is_taken(i, st->res, st->orig[i])) { st->res[i] = st->orig[i]; - if (match_obj_(st, score + 1, replaced, i + 1)) { + if (match_obj_(st, skips, score + 1, replaced, i + 1)) { return true; } } @@ -436,7 +448,7 @@ static bool match_obj_(struct match_state *st, size_t score, size_t replaced, si continue; } - if (match_obj_(st, score + 1, replaced, i + 1)) { + if (match_obj_(st, skips, score + 1, replaced, i + 1)) { is_best = true; } @@ -451,7 +463,7 @@ static bool match_obj_(struct match_state *st, size_t score, size_t replaced, si // Maybe this resource can't be matched st->res[i] = UNMATCHED; - return match_obj_(st, score, replaced, i + 1); + return match_obj_(st, skips, score, replaced, i + 1); } /* @@ -464,6 +476,7 @@ static bool match_obj_(struct match_state *st, size_t score, size_t replaced, si * res contains an index of which objs it is matched with or UNMATCHED. * * This solution is left in out. + * Returns the total number of matched solutions. */ static size_t match_obj(size_t num_objs, const uint32_t objs[static restrict num_objs], size_t num_res, const uint32_t res[static restrict num_res], @@ -482,104 +495,140 @@ static size_t match_obj(size_t num_objs, const uint32_t objs[static restrict num .exit_early = false, }; - match_obj_(&st, 0, 0, 0); + match_obj_(&st, 0, 0, 0, 0); return st.score; } -static bool wlr_drm_output_set_mode(struct wlr_output_state *output, - struct wlr_output_mode *mode) { - struct wlr_backend_state *drm = - wl_container_of(output->renderer, drm, renderer); - - wlr_log(L_INFO, "Modesetting '%s' with '%ux%u@%u mHz'", output->base->name, - mode->width, mode->height, mode->refresh); - - drmModeConnector *conn = drmModeGetConnector(drm->fd, output->connector); - if (!conn) { - wlr_log_errno(L_ERROR, "Failed to get DRM connector"); - goto error; - } - - if (conn->connection != DRM_MODE_CONNECTED || conn->count_modes == 0) { - wlr_log(L_ERROR, "%s is not connected", output->base->name); - goto error; - } +static void realloc_planes(struct wlr_backend_state *drm, const uint32_t *crtc_in) { + for (int i = 0; i < 3; ++i) { + if (drm->num_type_planes[i] == 0) + continue; - { - size_t index; + uint32_t possible[drm->num_type_planes[i]]; uint32_t crtc[drm->num_crtcs]; - uint32_t possible_crtc[drm->outputs->length]; - memset(possible_crtc, 0, sizeof(possible_crtc)); + uint32_t crtc_res[drm->num_crtcs]; - for (size_t i = 0; i < drm->num_crtcs; ++i) { - crtc[i] = UNMATCHED; - } + for (size_t j = 0; j < drm->num_type_planes[i]; ++j) + possible[j] = drm->type_planes[i][j].possible_crtcs; - for (size_t i = 0; i < drm->outputs->length; ++i) { - struct wlr_output_state *o = drm->outputs->items[i]; - if (o == output) { - index = i; + for (size_t j = 0; j < drm->num_crtcs; ++j) { + if (crtc_in[j] == UNMATCHED) { + crtc[j] = SKIP; + continue; } - if (o->state != WLR_DRM_OUTPUT_CONNECTED) { - continue; + if (drm->crtcs[j].planes[j]) { + crtc[j] = drm->crtcs[j].planes[i] - drm->type_planes[i]; + } else { + crtc[j] = UNMATCHED; } + } + + match_obj(drm->num_type_planes[i], possible, drm->num_crtcs, crtc, crtc_res); - possible_crtc[i] = o->possible_crtc; - crtc[o->crtc_ - drm->crtcs] = i; + for (size_t j = 0; j < drm->num_crtcs; ++j) { + struct wlr_drm_crtc *c = &drm->crtcs[j]; + c->planes[i] = &drm->type_planes[i][crtc_res[j]]; } + }; +} - for (int i = 0; i < conn->count_encoders; ++i) { - drmModeEncoder *enc = drmModeGetEncoder(drm->fd, conn->encoders[i]); - if (!enc) { - continue; - } +static void realloc_crtcs(struct wlr_backend_state *drm, struct wlr_output_state *output) { + bool handled[drm->outputs->length]; + uint32_t crtc[drm->num_crtcs]; + uint32_t crtc_res[drm->num_crtcs]; + uint32_t possible_crtc[drm->outputs->length]; - uint32_t res[drm->num_crtcs]; + for (size_t i = 0; i < drm->num_crtcs; ++i) { + crtc[i] = UNMATCHED; + } - possible_crtc[index] = enc->possible_crtcs; - match_obj(drm->outputs->length, possible_crtc, drm->num_crtcs, crtc, res); + memset(possible_crtc, 0, sizeof(possible_crtc)); + memset(handled, 0, sizeof(handled)); - wlr_log(L_DEBUG, "-----"); - for (size_t i = 0; i < drm->num_crtcs; ++i) { - wlr_log(L_DEBUG, "%d", (int)res[i]); - } - wlr_log(L_DEBUG, "-----"); + size_t index; + for (size_t i = 0; i < drm->outputs->length; ++i) { + struct wlr_output_state *o = drm->outputs->items[i]; + if (o == output) { + index = i; + } - bool handled[drm->outputs->length]; - memset(handled, 0, sizeof(handled)); + if (o->state != WLR_DRM_OUTPUT_CONNECTED) { + continue; + } - for (size_t i = 0; i < drm->num_crtcs; ++i) { - if (res[i] == UNMATCHED) { - continue; - } + possible_crtc[i] = o->possible_crtc; + crtc[o->crtc_ - drm->crtcs] = i; + } - handled[res[i]] = true; + possible_crtc[index] = output->possible_crtc; + match_obj(drm->outputs->length, possible_crtc, drm->num_crtcs, crtc, crtc_res); - if (res[i] != crtc[i]) { - struct wlr_output_state *o = drm->outputs->items[res[i]]; - o->crtc_ = &drm->crtcs[i]; - o->crtc = o->crtc_->id; - } - } + realloc_planes(drm, crtc_res); - for (size_t i = 0; i < drm->num_crtcs; ++i) { - if (!handled[i]) { - wlr_drm_output_cleanup(drm->outputs->items[i], false); - } - } + for (size_t i = 0; i < drm->num_crtcs; ++i) { + if (crtc_res[i] == UNMATCHED) { + continue; + } - if (!output->crtc_) { - wlr_log(L_ERROR, "Unable to match %s with a CRTC", output->base->name); - goto error; - } + handled[crtc_res[i]] = true; - output->possible_crtc = enc->possible_crtcs; + if (crtc_res[i] != crtc[i]) { + struct wlr_output_state *o = drm->outputs->items[crtc_res[i]]; + o->crtc_ = &drm->crtcs[i]; + o->crtc = o->crtc_->id; + } + } - drmModeFreeEncoder(enc); - break; + for (size_t i = 0; i < drm->outputs->length; ++i) { + if (!handled[i]) { + wlr_drm_output_cleanup(drm->outputs->items[i], false); } } +} + +static bool wlr_drm_output_set_mode(struct wlr_output_state *output, + struct wlr_output_mode *mode) { + struct wlr_backend_state *drm = wl_container_of(output->renderer, drm, renderer); + + wlr_log(L_INFO, "Modesetting '%s' with '%ux%u@%u mHz'", output->base->name, + mode->width, mode->height, mode->refresh); + + drmModeConnector *conn = drmModeGetConnector(drm->fd, output->connector); + if (!conn) { + wlr_log_errno(L_ERROR, "Failed to get DRM connector"); + goto error_output; + } + + if (conn->connection != DRM_MODE_CONNECTED || conn->count_modes == 0) { + wlr_log(L_ERROR, "%s is not connected", output->base->name); + goto error_output; + } + + drmModeEncoder *enc = NULL; + for (int i = 0; !enc && i < conn->count_encoders; ++i) { + enc = drmModeGetEncoder(drm->fd, conn->encoders[i]); + } + + if (!enc) { + wlr_log(L_ERROR, "Failed to get DRM encoder"); + goto error_conn; + } + + output->possible_crtc = enc->possible_crtcs; + realloc_crtcs(drm, output); + + if (!output->crtc_) { + wlr_log(L_ERROR, "Unable to match %s with a CRTC", output->base->name); + goto error_enc; + } + + struct wlr_drm_crtc *crtc = output->crtc_; + wlr_log(L_DEBUG, "%s: crtc=%ju ovr=%jd pri=%jd cur=%jd", output->base->name, + crtc - drm->crtcs, + crtc->overlay ? crtc->overlay - drm->overlay_planes : -1, + crtc->primary ? crtc->primary - drm->primary_planes : -1, + crtc->cursor ? crtc->cursor - drm->cursor_planes : -1); output->state = WLR_DRM_OUTPUT_CONNECTED; output->width = output->base->width = mode->width; @@ -589,15 +638,19 @@ static bool wlr_drm_output_set_mode(struct wlr_output_state *output, if (!display_init_renderer(&drm->renderer, output)) { wlr_log(L_ERROR, "Failed to initalise renderer for %s", output->base->name); - goto error; + goto error_enc; } + drmModeFreeEncoder(enc); drmModeFreeConnector(conn); return true; -error: - wlr_drm_output_cleanup(output, false); +error_enc: + drmModeFreeEncoder(enc); +error_conn: drmModeFreeConnector(conn); +error_output: + wlr_drm_output_cleanup(output, false); return false; } diff --git a/backend/drm/drm.h b/backend/drm/drm.h index 299be942..44eca101 100644 --- a/backend/drm/drm.h +++ b/backend/drm/drm.h @@ -39,9 +39,14 @@ struct wlr_drm_plane { struct wlr_drm_crtc { uint32_t id; - struct wlr_drm_plane *primary; - struct wlr_drm_plane *overlay; - struct wlr_drm_plane *cursor; + union { + struct { + struct wlr_drm_plane *overlay; + struct wlr_drm_plane *primary; + struct wlr_drm_plane *cursor; + }; + struct wlr_drm_plane *planes[3]; + }; union wlr_drm_crtc_props props; @@ -78,12 +83,23 @@ struct wlr_backend_state { size_t num_planes; struct wlr_drm_plane *planes; - size_t num_overlay_planes; - struct wlr_drm_plane *overlay_planes; - size_t num_primary_planes; - struct wlr_drm_plane *primary_planes; - size_t num_cursor_planes; - struct wlr_drm_plane *cursor_planes; + union { + struct { + size_t num_overlay_planes; + size_t num_primary_planes; + size_t num_cursor_planes; + }; + size_t num_type_planes[3]; + }; + + union { + struct { + struct wlr_drm_plane *overlay_planes; + struct wlr_drm_plane *primary_planes; + struct wlr_drm_plane *cursor_planes; + }; + struct wlr_drm_plane *type_planes[3]; + }; struct wl_display *display; struct wl_event_source *drm_event;