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Revert "Support direct scanout with src crop and dst boxes"

Browse Source 
Seems to introduce a regression which segfaults sway when switching back
to the VT.

This reverts commit ac17517a5c.
master
itycodes 2 months ago
parent 1372310b5e
commit 41849d3951
10 changed files with 55 additions and 236 deletions
Show Stats Download Patch File Download Diff File

44
backend/drm/atomic.c
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@ -3,7 +3,6 @@
#include <stdio.h>
#include <unistd.h>
#include <wlr/render/drm_syncobj.h>
#include <wlr/util/box.h>
#include <wlr/util/log.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
@ -11,7 +10,6 @@
#include "backend/drm/fb.h"
#include "backend/drm/iface.h"
#include "backend/drm/util.h"
#include "types/wlr_output.h"
static char *atomic_commit_flags_str(uint32_t flags) {
const char *const l[] = {
@ -358,8 +356,7 @@ static void plane_disable(struct atomic *atom, struct wlr_drm_plane *plane) {
static void set_plane_props(struct atomic *atom, struct wlr_drm_backend *drm,
struct wlr_drm_plane *plane, struct wlr_drm_fb *fb, uint32_t crtc_id,
const struct wlr_box *dst_box,
const struct wlr_fbox *src_box) {
int32_t x, int32_t y) {
uint32_t id = plane->id;
const struct wlr_drm_plane_props *props = &plane->props;
@ -369,17 +366,20 @@ static void set_plane_props(struct atomic *atom, struct wlr_drm_backend *drm,
return;
}
uint32_t width = fb->wlr_buf->width;
uint32_t height = fb->wlr_buf->height;
// The src_* properties are in 16.16 fixed point
atomic_add(atom, id, props->src_x, src_box->x * (1 << 16));
atomic_add(atom, id, props->src_y, src_box->y * (1 << 16));
atomic_add(atom, id, props->src_w, src_box->width * (1 << 16));
atomic_add(atom, id, props->src_h, src_box->height * (1 << 16));
atomic_add(atom, id, props->src_x, 0);
atomic_add(atom, id, props->src_y, 0);
atomic_add(atom, id, props->src_w, (uint64_t)width << 16);
atomic_add(atom, id, props->src_h, (uint64_t)height << 16);
atomic_add(atom, id, props->crtc_w, width);
atomic_add(atom, id, props->crtc_h, height);
atomic_add(atom, id, props->fb_id, fb->id);
atomic_add(atom, id, props->crtc_id, crtc_id);
atomic_add(atom, id, props->crtc_x, dst_box->x);
atomic_add(atom, id, props->crtc_y, dst_box->y);
atomic_add(atom, id, props->crtc_w, dst_box->width);
atomic_add(atom, id, props->crtc_h, dst_box->height);
atomic_add(atom, id, props->crtc_x, (uint64_t)x);
atomic_add(atom, id, props->crtc_y, (uint64_t)y);
}
static bool supports_cursor_hotspots(const struct wlr_drm_plane *plane) {
@ -439,14 +439,8 @@ static void atomic_connector_add(struct atomic *atom,
if (crtc->props.vrr_enabled != 0) {
atomic_add(atom, crtc->id, crtc->props.vrr_enabled, state->vrr_enabled);
}
struct wlr_fbox src_box;
struct wlr_box dst_box;
output_state_get_buffer_src_box(state->base, &src_box);
output_state_get_buffer_dst_box(state->base, &dst_box);
set_plane_props(atom, drm, crtc->primary, state->primary_fb, crtc->id,
&dst_box, &src_box);
0, 0);
if (crtc->primary->props.fb_damage_clips != 0) {
atomic_add(atom, crtc->primary->id,
crtc->primary->props.fb_damage_clips, state->fb_damage_clips);
@ -459,18 +453,8 @@ static void atomic_connector_add(struct atomic *atom,
}
if (crtc->cursor) {
if (drm_connector_is_cursor_visible(conn)) {
struct wlr_fbox cursor_src = {
.width = state->cursor_fb->wlr_buf->width,
.height = state->cursor_fb->wlr_buf->height,
};
struct wlr_box cursor_dst = {
.x = conn->cursor_x,
.y = conn->cursor_y,
.width = state->cursor_fb->wlr_buf->width,
.height = state->cursor_fb->wlr_buf->height,
};
set_plane_props(atom, drm, crtc->cursor, state->cursor_fb,
crtc->id, &cursor_dst, &cursor_src);
crtc->id, conn->cursor_x, conn->cursor_y);
if (supports_cursor_hotspots(crtc->cursor)) {
atomic_add(atom, crtc->cursor->id,
crtc->cursor->props.hotspot_x, conn->cursor_hotspot_x);

46
backend/drm/legacy.c
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@ -7,7 +7,6 @@
#include "backend/drm/fb.h"
#include "backend/drm/iface.h"
#include "backend/drm/util.h"
#include "types/wlr_output.h"
static bool legacy_fb_props_match(struct wlr_drm_fb *fb1,
struct wlr_drm_fb *fb2) {
@ -40,41 +39,20 @@ static bool legacy_crtc_test(const struct wlr_drm_connector_state *state,
struct wlr_drm_connector *conn = state->connector;
struct wlr_drm_crtc *crtc = conn->crtc;
if (state->base->committed & WLR_OUTPUT_STATE_BUFFER) {
// If the size doesn't match, reject buffer (scaling is not supported)
int pending_width, pending_height;
output_pending_resolution(&state->connector->output, state->base,
&pending_width, &pending_height);
if (state->base->buffer->width != pending_width ||
state->base->buffer->height != pending_height) {
wlr_log(WLR_DEBUG, "Primary buffer size mismatch");
return false;
}
// Source crop is also not supported
struct wlr_fbox src_box;
output_state_get_buffer_src_box(state->base, &src_box);
if (src_box.x != 0.0 || src_box.y != 0.0 ||
src_box.width != (double)state->base->buffer->width ||
src_box.height != (double)state->base->buffer->height) {
wlr_log(WLR_DEBUG, "Source crop not supported in DRM-legacy output");
return false;
if ((state->base->committed & WLR_OUTPUT_STATE_BUFFER) && !modeset) {
struct wlr_drm_fb *pending_fb = state->primary_fb;
struct wlr_drm_fb *prev_fb = crtc->primary->queued_fb;
if (!prev_fb) {
prev_fb = crtc->primary->current_fb;
}
if (!modeset) {
struct wlr_drm_fb *pending_fb = state->primary_fb;
struct wlr_drm_fb *prev_fb = crtc->primary->queued_fb;
if (!prev_fb) {
prev_fb = crtc->primary->current_fb;
}
/* Legacy is only guaranteed to be able to display a FB if it's been
* allocated the same way as the previous one. */
if (prev_fb != NULL && !legacy_fb_props_match(prev_fb, pending_fb)) {
wlr_drm_conn_log(conn, WLR_DEBUG,
"Cannot change scan-out buffer parameters with legacy KMS API");
return false;
}
/* Legacy is only guaranteed to be able to display a FB if it's been
* allocated the same way as the previous one. */
if (prev_fb != NULL && !legacy_fb_props_match(prev_fb, pending_fb)) {
wlr_drm_conn_log(conn, WLR_DEBUG,
"Cannot change scan-out buffer parameters with legacy KMS API");
return false;
}
}

52
backend/drm/libliftoff.c
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@ -4,14 +4,12 @@
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include <wlr/util/box.h>
#include <wlr/util/log.h>
#include "backend/drm/drm.h"
#include "backend/drm/fb.h"
#include "backend/drm/iface.h"
#include "config.h"
#include "types/wlr_output.h"
static void log_handler(enum liftoff_log_priority priority, const char *fmt, va_list args) {
enum wlr_log_importance importance = WLR_SILENT;
@ -151,23 +149,25 @@ static bool add_prop(drmModeAtomicReq *req, uint32_t obj,
}
static bool set_plane_props(struct wlr_drm_plane *plane,
struct liftoff_layer *layer, struct wlr_drm_fb *fb, uint64_t zpos,
const struct wlr_box *dst_box, const struct wlr_fbox *src_box) {
struct liftoff_layer *layer, struct wlr_drm_fb *fb, int32_t x, int32_t y, uint64_t zpos) {
if (fb == NULL) {
wlr_log(WLR_ERROR, "Failed to acquire FB for plane %"PRIu32, plane->id);
return false;
}
// The src_* properties are in 16.16 fixed point
uint32_t width = fb->wlr_buf->width;
uint32_t height = fb->wlr_buf->height;
// The SRC_* properties are in 16.16 fixed point
return liftoff_layer_set_property(layer, "zpos", zpos) == 0 &&
liftoff_layer_set_property(layer, "SRC_X", src_box->x * (1 << 16)) == 0 &&
liftoff_layer_set_property(layer, "SRC_Y", src_box->y * (1 << 16)) == 0 &&
liftoff_layer_set_property(layer, "SRC_W", src_box->width * (1 << 16)) == 0 &&
liftoff_layer_set_property(layer, "SRC_H", src_box->height * (1 << 16)) == 0 &&
liftoff_layer_set_property(layer, "CRTC_X", dst_box->x) == 0 &&
liftoff_layer_set_property(layer, "CRTC_Y", dst_box->y) == 0 &&
liftoff_layer_set_property(layer, "CRTC_W", dst_box->width) == 0 &&
liftoff_layer_set_property(layer, "CRTC_H", dst_box->height) == 0 &&
liftoff_layer_set_property(layer, "SRC_X", 0) == 0 &&
liftoff_layer_set_property(layer, "SRC_Y", 0) == 0 &&
liftoff_layer_set_property(layer, "SRC_W", (uint64_t)width << 16) == 0 &&
liftoff_layer_set_property(layer, "SRC_H", (uint64_t)height << 16) == 0 &&
liftoff_layer_set_property(layer, "CRTC_X", (uint64_t)x) == 0 &&
liftoff_layer_set_property(layer, "CRTC_Y", (uint64_t)y) == 0 &&
liftoff_layer_set_property(layer, "CRTC_W", width) == 0 &&
liftoff_layer_set_property(layer, "CRTC_H", height) == 0 &&
liftoff_layer_set_property(layer, "FB_ID", fb->id) == 0;
}
@ -331,17 +331,9 @@ static bool add_connector(drmModeAtomicReq *req,
if (crtc->props.vrr_enabled != 0) {
ok = ok && add_prop(req, crtc->id, crtc->props.vrr_enabled, state->vrr_enabled);
}
struct wlr_fbox src_box;
struct wlr_box dst_box;
output_state_get_buffer_src_box(state->base, &src_box);
output_state_get_buffer_dst_box(state->base, &dst_box);
ok = ok &&
set_plane_props(crtc->primary, crtc->primary->liftoff_layer,
state->primary_fb, 0, &dst_box, &src_box);
ok = ok &&
set_plane_props(crtc->primary, crtc->liftoff_composition_layer,
state->primary_fb, 0, &dst_box, &src_box);
set_plane_props(crtc->primary, crtc->primary->liftoff_layer, state->primary_fb, 0, 0, 0) &&
set_plane_props(crtc->primary, crtc->liftoff_composition_layer, state->primary_fb, 0, 0, 0);
liftoff_layer_set_property(crtc->primary->liftoff_layer,
"FB_DAMAGE_CLIPS", state->fb_damage_clips);
liftoff_layer_set_property(crtc->liftoff_composition_layer,
@ -368,19 +360,9 @@ static bool add_connector(drmModeAtomicReq *req,
if (crtc->cursor) {
if (drm_connector_is_cursor_visible(conn)) {
struct wlr_fbox cursor_src = {
.width = state->cursor_fb->wlr_buf->width,
.height = state->cursor_fb->wlr_buf->height,
};
struct wlr_box cursor_dst = {
.x = conn->cursor_x,
.y = conn->cursor_y,
.width = state->cursor_fb->wlr_buf->width,
.height = state->cursor_fb->wlr_buf->height,
};
ok = ok && set_plane_props(crtc->cursor, crtc->cursor->liftoff_layer,
state->cursor_fb, wl_list_length(&crtc->layers) + 1,
&cursor_dst, &cursor_src);
state->cursor_fb, conn->cursor_x, conn->cursor_y,
wl_list_length(&crtc->layers) + 1);
} else {
ok = ok && disable_plane(crtc->cursor);
}

22
backend/wayland/output.c
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@ -300,28 +300,6 @@ static bool output_test(struct wlr_output *wlr_output,
struct wlr_wl_output *output =
get_wl_output_from_output(wlr_output);
if (state->committed & WLR_OUTPUT_STATE_BUFFER) {
// If the size doesn't match, reject buffer (scaling is not currently
// supported but could be implemented with viewporter)
int pending_width, pending_height;
output_pending_resolution(wlr_output, state,
&pending_width, &pending_height);
if (state->buffer->width != pending_width ||
state->buffer->height != pending_height) {
wlr_log(WLR_DEBUG, "Primary buffer size mismatch");
return false;
}
// Source crop is also not currently supported
struct wlr_fbox src_box;
output_state_get_buffer_src_box(state, &src_box);
if (src_box.x != 0.0 || src_box.y != 0.0 ||
src_box.width != (double)state->buffer->width ||
src_box.height != (double)state->buffer->height) {
wlr_log(WLR_DEBUG, "Source crop not supported in wayland output");
return false;
}
}
uint32_t unsupported = state->committed & ~SUPPORTED_OUTPUT_STATE;
if (unsupported != 0) {
wlr_log(WLR_DEBUG, "Unsupported output state fields: 0x%"PRIx32,

21
backend/x11/output.c
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@ -129,27 +129,6 @@ static bool output_test(struct wlr_output *wlr_output,
return false;
}
if (state->committed & WLR_OUTPUT_STATE_BUFFER) {
// If the size doesn't match, reject buffer (scaling is not supported)
int pending_width, pending_height;
output_pending_resolution(wlr_output, state,
&pending_width, &pending_height);
if (state->buffer->width != pending_width ||
state->buffer->height != pending_height) {
wlr_log(WLR_DEBUG, "Primary buffer size mismatch");
return false;
}
// Source crop is not supported
struct wlr_fbox src_box;
output_state_get_buffer_src_box(state, &src_box);
if (src_box.x != 0.0 || src_box.y != 0.0 ||
src_box.width != (double)state->buffer->width ||
src_box.height != (double)state->buffer->height) {
wlr_log(WLR_DEBUG, "Source crop not supported in X11 output");
return false;
}
}
// All we can do to influence adaptive sync on the X11 backend is set the
// _VARIABLE_REFRESH window property like mesa automatically does. We don't
// have any control beyond that, so we set the state to enabled on creating

5
include/types/wlr_output.h
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@ -26,9 +26,4 @@ void output_defer_present(struct wlr_output *output, struct wlr_output_event_pre
bool output_prepare_commit(struct wlr_output *output, const struct wlr_output_state *state);
void output_apply_commit(struct wlr_output *output, const struct wlr_output_state *state);
void output_state_get_buffer_src_box(const struct wlr_output_state *state,
struct wlr_fbox *out);
void output_state_get_buffer_dst_box(const struct wlr_output_state *state,
struct wlr_box *out);
#endif

11
include/wlr/types/wlr_output.h
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@ -17,7 +17,6 @@
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_buffer.h>
#include <wlr/util/addon.h>
#include <wlr/util/box.h>
enum wlr_output_mode_aspect_ratio {
WLR_OUTPUT_MODE_ASPECT_RATIO_NONE,
@ -95,16 +94,6 @@ struct wlr_output_state {
enum wl_output_subpixel subpixel;
struct wlr_buffer *buffer;
// Source crop for the buffer. If all zeros then no crop is applied.
// As usual with source crop, this is in buffer coordinates.
// Double-buffered by WLR_OUTPUT_STATE_BUFFER along with `buffer`.
struct wlr_fbox buffer_src_box;
// Destination rect to scale the buffer to (after source crop). If width
// and height are zero then the buffer is displayed at native size. The
// offset is relative to the origin of this output. Double-buffered by
// WLR_OUTPUT_STATE_BUFFER along with `buffer`.
struct wlr_box buffer_dst_box;
/* Request a tearing page-flip. When enabled, this may cause the output to
* display a part of the previous buffer and a part of the current buffer at
* the same time. The backend may reject the commit if a tearing page-flip

70
types/output/output.c
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@ -548,37 +548,14 @@ static uint32_t output_compare_state(struct wlr_output *output,
static bool output_basic_test(struct wlr_output *output,
const struct wlr_output_state *state) {
if (state->committed & WLR_OUTPUT_STATE_BUFFER) {
struct wlr_fbox src_box;
output_state_get_buffer_src_box(state, &src_box);
// Source box must be contained within the buffer
if (src_box.x < 0.0 || src_box.y < 0.0 ||
src_box.x + src_box.width > state->buffer->width ||
src_box.y + src_box.height > state->buffer->height) {
wlr_log(WLR_ERROR, "Tried to commit with invalid buffer_src_box");
return false;
}
// Source box must not be empty (but it can be smaller than 1 pixel,
// some DRM devices support sub-pixel crops)
if (wlr_fbox_empty(&src_box)) {
wlr_log(WLR_ERROR, "Tried to commit with an empty buffer_src_box");
return false;
}
// Destination box cannot be entirely off-screen (but it also doesn't
// have to be entirely on-screen). This also checks the dst box is
// not empty.
// If the size doesn't match, reject buffer (scaling is not
// supported)
int pending_width, pending_height;
output_pending_resolution(output, state, &pending_width, &pending_height);
struct wlr_box output_box = {
.width = pending_width,
.height = pending_height
};
struct wlr_box dst_box;
output_state_get_buffer_dst_box(state, &dst_box);
if (!wlr_box_intersection(&output_box, &output_box, &dst_box)) {
wlr_log(WLR_ERROR, "Primary buffer is entirely off-screen or 0-sized");
output_pending_resolution(output, state,
&pending_width, &pending_height);
if (state->buffer->width != pending_width ||
state->buffer->height != pending_height) {
wlr_log(WLR_DEBUG, "Primary buffer size mismatch");
return false;
}
} else {
@ -868,39 +845,6 @@ void output_defer_present(struct wlr_output *output, struct wlr_output_event_pre
deferred_present_event_handle_idle, deferred);
}
void output_state_get_buffer_src_box(const struct wlr_output_state *state,
struct wlr_fbox *out) {
out->x = state->buffer_src_box.x;
out->y = state->buffer_src_box.y;
// If the source box is unset then default to the whole buffer.
if (state->buffer_src_box.width == 0.0 &&
state->buffer_src_box.height == 0.0) {
out->width = (double)state->buffer->width;
out->height = (double)state->buffer->height;
} else {
out->width = state->buffer_src_box.width;
out->height = state->buffer_src_box.height;
}
}
void output_state_get_buffer_dst_box(const struct wlr_output_state *state,
struct wlr_box *out) {
out->x = state->buffer_dst_box.x;
out->y = state->buffer_dst_box.y;
// If the dst box is unset then default to source crop size (which itself
// defaults to the whole buffer size if unset)
if (state->buffer_dst_box.width == 0 &&
state->buffer_dst_box.height == 0) {
struct wlr_fbox src_box;
output_state_get_buffer_src_box(state, &src_box);
out->width = (int)src_box.width;
out->height = (int)src_box.height;
} else {
out->width = state->buffer_dst_box.width;
out->height = state->buffer_dst_box.height;
}
}
void wlr_output_send_request_state(struct wlr_output *output,
const struct wlr_output_state *state) {
uint32_t unchanged = output_compare_state(output, state);

4
types/output/state.c
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@ -142,8 +142,6 @@ bool wlr_output_state_copy(struct wlr_output_state *dst,
WLR_OUTPUT_STATE_WAIT_TIMELINE |
WLR_OUTPUT_STATE_SIGNAL_TIMELINE);
copy.buffer = NULL;
copy.buffer_src_box = (struct wlr_fbox){0};
copy.buffer_dst_box = (struct wlr_box){0};
pixman_region32_init(&copy.damage);
copy.gamma_lut = NULL;
copy.gamma_lut_size = 0;
@ -152,8 +150,6 @@ bool wlr_output_state_copy(struct wlr_output_state *dst,
if (src->committed & WLR_OUTPUT_STATE_BUFFER) {
wlr_output_state_set_buffer(&copy, src->buffer);
copy.buffer_src_box = src->buffer_src_box;
copy.buffer_dst_box = src->buffer_dst_box;
}
if (src->committed & WLR_OUTPUT_STATE_DAMAGE) {

16
types/scene/wlr_scene.c
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@ -1831,7 +1831,6 @@ static bool scene_entry_try_direct_scanout(struct render_list_entry *entry,
return false;
}
// The native size of the buffer after any transform is applied
int default_width = buffer->buffer->width;
int default_height = buffer->buffer->height;
wlr_output_transform_coords(buffer->transform, &default_width, &default_height);
@ -1840,6 +1839,11 @@ static bool scene_entry_try_direct_scanout(struct render_list_entry *entry,
.height = default_height,
};
if (!wlr_fbox_empty(&buffer->src_box) &&
!wlr_fbox_equal(&buffer->src_box, &default_box)) {
return false;
}
if (buffer->transform != data->transform) {
return false;
}
@ -1860,16 +1864,6 @@ static bool scene_entry_try_direct_scanout(struct render_list_entry *entry,
return false;
}
if (!wlr_fbox_empty(&buffer->src_box) &&
!wlr_fbox_equal(&buffer->src_box, &default_box)) {
pending.buffer_src_box = buffer->src_box;
}
// Translate the location from scene coordinates to output coordinates
pending.buffer_dst_box.x = entry->x - scene_output->x;
pending.buffer_dst_box.y = entry->y - scene_output->y;
scene_node_get_size(node, &pending.buffer_dst_box.width, &pending.buffer_dst_box.height);
wlr_output_state_set_buffer(&pending, buffer->buffer);
if (buffer->wait_timeline != NULL) {
wlr_output_state_set_wait_timeline(&pending, buffer->wait_timeline, buffer->wait_point);

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