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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

121
backend/drm/drm.c
View file

@ -334,7 +334,67 @@ static bool drm_connector_attach_render(struct wlr_output *output,
return make_drm_surface_current(&conn->crtc->primary->surf, buffer_age);
}
static uint32_t strip_alpha_channel(uint32_t format) {
switch (format) {
case DRM_FORMAT_ARGB8888:
return DRM_FORMAT_XRGB8888;
default:
return DRM_FORMAT_INVALID;
}
}
static bool test_buffer(struct wlr_drm_connector *conn,
struct wlr_buffer *wlr_buffer) {
struct wlr_output *output = &conn->output;
struct wlr_drm_backend *drm = get_drm_backend_from_backend(output->backend);
if (!drm->session->active) {
return false;
}
struct wlr_drm_crtc *crtc = conn->crtc;
if (!crtc) {
return false;
}
struct wlr_dmabuf_attributes attribs;
if (!wlr_buffer_get_dmabuf(wlr_buffer, &attribs)) {
return false;
}
if (attribs.flags != 0) {
return false;
}
if (attribs.width != output->width || attribs.height != output->height) {
return false;
}
if (!wlr_drm_format_set_has(&crtc->primary->formats,
attribs.format, attribs.modifier)) {
// The format isn't supported by the plane. Try stripping the alpha
// channel, if any.
uint32_t format = strip_alpha_channel(attribs.format);
if (format != DRM_FORMAT_INVALID && wlr_drm_format_set_has(
&crtc->primary->formats, format, attribs.modifier)) {
attribs.format = format;
} else {
return false;
}
}
return true;
}
static bool drm_connector_test(struct wlr_output *output) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
if ((output->pending.committed & WLR_OUTPUT_STATE_BUFFER) &&
output->pending.buffer_type == WLR_OUTPUT_STATE_BUFFER_SCANOUT) {
if (!test_buffer(conn, output->pending.buffer)) {
return false;
}
}
return true;
}
@ -377,8 +437,13 @@ static bool drm_connector_commit_buffer(struct wlr_output *output) {
return false;
}
break;
case WLR_OUTPUT_STATE_BUFFER_SCANOUT:
bo = import_gbm_bo(&drm->renderer, &conn->pending_dmabuf);
case WLR_OUTPUT_STATE_BUFFER_SCANOUT:;
struct wlr_dmabuf_attributes attribs;
if (!wlr_buffer_get_dmabuf(output->pending.buffer, &attribs)) {
return false;
}
bo = import_gbm_bo(&drm->renderer, &attribs);
if (bo == NULL) {
wlr_log(WLR_ERROR, "import_gbm_bo failed");
return false;
@ -1011,57 +1076,6 @@ static bool drm_connector_move_cursor(struct wlr_output *output,
return ok;
}
static uint32_t strip_alpha_channel(uint32_t format) {
switch (format) {
case DRM_FORMAT_ARGB8888:
return DRM_FORMAT_XRGB8888;
default:
return DRM_FORMAT_INVALID;
}
}
static bool drm_connector_attach_buffer(struct wlr_output *output,
struct wlr_buffer *buffer) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
struct wlr_drm_backend *drm = get_drm_backend_from_backend(output->backend);
if (!drm->session->active) {
return false;
}
struct wlr_drm_crtc *crtc = conn->crtc;
if (!crtc) {
return false;
}
struct wlr_dmabuf_attributes attribs;
if (!wlr_buffer_get_dmabuf(buffer, &attribs)) {
return false;
}
if (attribs.flags != 0) {
return false;
}
if (attribs.width != output->width || attribs.height != output->height) {
return false;
}
if (!wlr_drm_format_set_has(&crtc->primary->formats,
attribs.format, attribs.modifier)) {
// The format isn't supported by the plane. Try stripping the alpha
// channel, if any.
uint32_t format = strip_alpha_channel(attribs.format);
if (format != DRM_FORMAT_INVALID && wlr_drm_format_set_has(
&crtc->primary->formats, format, attribs.modifier)) {
attribs.format = format;
} else {
return false;
}
}
memcpy(&conn->pending_dmabuf, &attribs, sizeof(attribs));
return true;
}
static void drm_connector_destroy(struct wlr_output *output) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
drm_connector_cleanup(conn);
@ -1081,7 +1095,6 @@ static const struct wlr_output_impl output_impl = {
.set_gamma = set_drm_connector_gamma,
.get_gamma_size = drm_connector_get_gamma_size,
.export_dmabuf = drm_connector_export_dmabuf,
.attach_buffer = drm_connector_attach_buffer,
};
bool wlr_output_is_drm(struct wlr_output *output) {