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output: check buffer in wlr_output_test

Browse source 
Check that buffer can be scanned out in wlr_output_test instead of
wlr_output_attach_buffer. This allows the backend to have access to the
whole pending state when performing the check.

This brings the wlr_output API more in line with the KMS API.

This removes the need for wlr_output_attach_buffer to return a value,
and for wlr_output_impl.attach_buffer.
This commit is contained in:
Simon Ser 2020-04-02 14:12:26 +02:00 • committed by Drew DeVault
parent e041158988
commit 6977f3a843
7 changed files with 122 additions and 115 deletions
Download patch file Download diff file Expand all files Collapse all files

55
backend/wayland/output.c
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@ -127,20 +127,35 @@ static const struct wl_buffer_listener buffer_listener = {
.release = buffer_handle_release,
};
static struct wlr_wl_buffer *create_wl_buffer(struct wlr_wl_backend *wl,
static bool test_buffer(struct wlr_wl_backend *wl,
struct wlr_buffer *wlr_buffer,
int required_width, int required_height) {
struct wlr_dmabuf_attributes attribs;
if (!wlr_buffer_get_dmabuf(wlr_buffer, &attribs)) {
return NULL;
return false;
}
if (attribs.width != required_width || attribs.height != required_height) {
return NULL;
return false;
}
if (!wlr_drm_format_set_has(&wl->linux_dmabuf_v1_formats,
attribs.format, attribs.modifier)) {
return false;
}
return true;
}
static struct wlr_wl_buffer *create_wl_buffer(struct wlr_wl_backend *wl,
struct wlr_buffer *wlr_buffer,
int required_width, int required_height) {
if (!test_buffer(wl, wlr_buffer, required_width, required_height)) {
return NULL;
}
struct wlr_dmabuf_attributes attribs;
if (!wlr_buffer_get_dmabuf(wlr_buffer, &attribs)) {
return NULL;
}
@ -180,23 +195,6 @@ static struct wlr_wl_buffer *create_wl_buffer(struct wlr_wl_backend *wl,
return buffer;
}
static bool output_attach_buffer(struct wlr_output *wlr_output,
struct wlr_buffer *wlr_buffer) {
struct wlr_wl_output *output =
get_wl_output_from_output(wlr_output);
struct wlr_wl_backend *wl = output->backend;
struct wlr_wl_buffer *buffer = create_wl_buffer(wl, wlr_buffer,
wlr_output->width, wlr_output->height);
if (buffer == NULL) {
return false;
}
destroy_wl_buffer(output->pending_buffer);
output->pending_buffer = buffer;
return true;
}
static bool output_test(struct wlr_output *wlr_output) {
if (wlr_output->pending.committed & WLR_OUTPUT_STATE_ENABLED) {
wlr_log(WLR_DEBUG, "Cannot disable a Wayland output");
@ -254,10 +252,14 @@ static bool output_commit(struct wlr_output *wlr_output) {
return false;
}
break;
case WLR_OUTPUT_STATE_BUFFER_SCANOUT:
assert(output->pending_buffer != NULL);
wl_surface_attach(output->surface,
output->pending_buffer->wl_buffer, 0, 0);
case WLR_OUTPUT_STATE_BUFFER_SCANOUT:;
struct wlr_wl_buffer *buffer = create_wl_buffer(output->backend,
wlr_output->pending.buffer, wlr_output->width, wlr_output->height);
if (buffer == NULL) {
return false;
}
wl_surface_attach(output->surface, buffer->wl_buffer, 0, 0);
if (damage == NULL) {
wl_surface_damage_buffer(output->surface,
@ -273,8 +275,6 @@ static bool output_commit(struct wlr_output *wlr_output) {
}
}
wl_surface_commit(output->surface);
output->pending_buffer = NULL;
break;
}
@ -400,8 +400,6 @@ static void output_destroy(struct wlr_output *wlr_output) {
presentation_feedback_destroy(feedback);
}
destroy_wl_buffer(output->pending_buffer);
wlr_egl_destroy_surface(&output->backend->egl, output->egl_surface);
wl_egl_window_destroy(output->egl_window);
if (output->zxdg_toplevel_decoration_v1) {
@ -429,7 +427,6 @@ static bool output_move_cursor(struct wlr_output *_output, int x, int y) {
static const struct wlr_output_impl output_impl = {
.destroy = output_destroy,
.attach_render = output_attach_render,
.attach_buffer = output_attach_buffer,
.test = output_test,
.commit = output_commit,
.set_cursor = output_set_cursor,