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backend/headless: use common renderer and allocator 

Instead of managing our own renderer and allocator, let the common
code do it.

Because wlr_headless_backend_create_with_renderer needs to re-use
the parent renderer, we have to hand-roll some of the renderer
initialization.
This commit is contained in:
Simon Ser 2021-04-29 09:18:19 +02:00 committed by Kenny Levinsen
parent 349553d011
commit c82f37542d
3 changed files with 32 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
backend/headless/backend.c
View File

@ -9,6 +9,7 @@
#include <wlr/render/wlr_renderer.h>
#include <wlr/util/log.h>
#include <xf86drm.h>
#include "backend/backend.h"
#include "backend/headless.h"
#include "render/drm_format_set.h"
#include "render/gbm_allocator.h"
@ -54,7 +55,7 @@ static void backend_destroy(struct wlr_backend *wlr_backend) {
}
wl_list_remove(&backend->display_destroy.link);
wl_list_remove(&backend->renderer_destroy.link);
wl_list_remove(&backend->parent_renderer_destroy.link);
struct wlr_headless_output *output, *output_tmp;
wl_list_for_each_safe(output, output_tmp, &backend->outputs, link) {
@ -71,11 +72,6 @@ static void backend_destroy(struct wlr_backend *wlr_backend) {
free(backend->format);
if (!backend->has_parent_renderer) {
wlr_renderer_destroy(backend->renderer);
}
wlr_allocator_destroy(backend->allocator);
close(backend->drm_fd);
free(backend);
}
@ -84,7 +80,11 @@ static struct wlr_renderer *backend_get_renderer(
struct wlr_backend *wlr_backend) {
struct wlr_headless_backend *backend =
headless_backend_from_backend(wlr_backend);
return backend->renderer;
if (backend->parent_renderer != NULL) {
return backend->parent_renderer;
} else {
return wlr_backend->renderer;
}
}
static int backend_get_drm_fd(struct wlr_backend *wlr_backend) {
@ -93,7 +93,7 @@ static int backend_get_drm_fd(struct wlr_backend *wlr_backend) {
return backend->drm_fd;
}
static uint32_t backend_get_buffer_caps(struct wlr_backend *wlr_backend) {
static uint32_t get_buffer_caps(struct wlr_backend *wlr_backend) {
return WLR_BUFFER_CAP_DATA_PTR
| WLR_BUFFER_CAP_DMABUF
| WLR_BUFFER_CAP_SHM;
@ -104,7 +104,7 @@ static const struct wlr_backend_impl backend_impl = {
.destroy = backend_destroy,
.get_renderer = backend_get_renderer,
.get_drm_fd = backend_get_drm_fd,
.get_buffer_caps = backend_get_buffer_caps,
.get_buffer_caps = get_buffer_caps,
};
static void handle_display_destroy(struct wl_listener *listener, void *data) {
@ -115,16 +115,18 @@ static void handle_display_destroy(struct wl_listener *listener, void *data) {
static void handle_renderer_destroy(struct wl_listener *listener, void *data) {
struct wlr_headless_backend *backend =
wl_container_of(listener, backend, renderer_destroy);
wl_container_of(listener, backend, parent_renderer_destroy);
backend_destroy(&backend->backend);
}
static bool backend_init(struct wlr_headless_backend *backend,
struct wl_display *display, struct wlr_renderer *renderer) {
wlr_backend_init(&backend->backend, &backend_impl);
backend->display = display;
wl_list_init(&backend->outputs);
wl_list_init(&backend->input_devices);
wl_list_init(&backend->parent_renderer_destroy.link);
if (renderer == NULL) {
renderer = wlr_renderer_autocreate(&backend->backend);
@ -132,17 +134,20 @@ static bool backend_init(struct wlr_headless_backend *backend,
wlr_log(WLR_ERROR, "Failed to create renderer");
return false;
}
backend->backend.renderer = renderer;
} else {
backend->parent_renderer = renderer;
backend->parent_renderer_destroy.notify = handle_renderer_destroy;
wl_signal_add(&renderer->events.destroy, &backend->parent_renderer_destroy);
}
backend->renderer = renderer;
backend->allocator = wlr_allocator_autocreate(&backend->backend, renderer);
if (!backend->allocator) {
if (backend_get_allocator(&backend->backend) == NULL) {
wlr_log(WLR_ERROR, "Failed to create allocator");
return false;
}
const struct wlr_drm_format_set *formats =
wlr_renderer_get_render_formats(backend->renderer);
wlr_renderer_get_render_formats(renderer);
if (formats == NULL) {
wlr_log(WLR_ERROR, "Failed to get available DMA-BUF formats from renderer");
return false;
@ -158,8 +163,6 @@ static bool backend_init(struct wlr_headless_backend *backend,
backend->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &backend->display_destroy);
wl_list_init(&backend->renderer_destroy.link);
return true;
}
@ -246,7 +249,6 @@ struct wlr_backend *wlr_headless_backend_create_with_renderer(
wlr_log(WLR_ERROR, "Failed to allocate wlr_headless_backend");
return NULL;
}
backend->has_parent_renderer = true;
int drm_fd = wlr_renderer_get_drm_fd(renderer);
if (drm_fd < 0) {
@ -263,9 +265,6 @@ struct wlr_backend *wlr_headless_backend_create_with_renderer(
goto error_init;
}
backend->renderer_destroy.notify = handle_renderer_destroy;
wl_signal_add(&renderer->events.destroy, &backend->renderer_destroy);
return &backend->backend;
error_init:

17
backend/headless/output.c
View File

@ -4,6 +4,7 @@
#include <wlr/interfaces/wlr_output.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/util/log.h>
#include "backend/backend.h"
#include "backend/headless.h"
#include "render/swapchain.h"
#include "render/wlr_renderer.h"
@ -19,13 +20,14 @@ static bool output_set_custom_mode(struct wlr_output *wlr_output, int32_t width,
int32_t height, int32_t refresh) {
struct wlr_headless_output *output =
headless_output_from_output(wlr_output);
struct wlr_allocator *allocator = backend_get_allocator(wlr_output->backend);
if (refresh <= 0) {
refresh = HEADLESS_DEFAULT_REFRESH;
}
wlr_swapchain_destroy(output->swapchain);
output->swapchain = wlr_swapchain_create(output->backend->allocator,
output->swapchain = wlr_swapchain_create(allocator,
width, height, output->backend->format);
if (!output->swapchain) {
wlr_output_destroy(wlr_output);
@ -42,6 +44,7 @@ static bool output_attach_render(struct wlr_output *wlr_output,
int *buffer_age) {
struct wlr_headless_output *output =
headless_output_from_output(wlr_output);
struct wlr_renderer *renderer = wlr_backend_get_renderer(wlr_output->backend);
wlr_buffer_unlock(output->back_buffer);
output->back_buffer = wlr_swapchain_acquire(output->swapchain, buffer_age);
@ -50,8 +53,7 @@ static bool output_attach_render(struct wlr_output *wlr_output,
return false;
}
if (!wlr_renderer_bind_buffer(output->backend->renderer,
output->back_buffer)) {
if (!wlr_renderer_bind_buffer(renderer, output->back_buffer)) {
wlr_log(WLR_ERROR, "Failed to bind buffer to renderer");
return false;
}
@ -75,6 +77,7 @@ static bool output_test(struct wlr_output *wlr_output) {
static bool output_commit(struct wlr_output *wlr_output) {
struct wlr_headless_output *output =
headless_output_from_output(wlr_output);
struct wlr_renderer *renderer = wlr_backend_get_renderer(wlr_output->backend);
if (!output_test(wlr_output)) {
return false;
@ -95,7 +98,7 @@ static bool output_commit(struct wlr_output *wlr_output) {
case WLR_OUTPUT_STATE_BUFFER_RENDER:
assert(output->back_buffer != NULL);
wlr_renderer_bind_buffer(output->backend->renderer, NULL);
wlr_renderer_bind_buffer(renderer, NULL);
buffer = output->back_buffer;
output->back_buffer = NULL;
@ -120,8 +123,9 @@ static bool output_commit(struct wlr_output *wlr_output) {
static void output_rollback_render(struct wlr_output *wlr_output) {
struct wlr_headless_output *output =
headless_output_from_output(wlr_output);
struct wlr_renderer *renderer = wlr_backend_get_renderer(wlr_output->backend);
wlr_renderer_bind_buffer(output->backend->renderer, NULL);
wlr_renderer_bind_buffer(renderer, NULL);
wlr_buffer_unlock(output->back_buffer);
output->back_buffer = NULL;
@ -178,6 +182,7 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
unsigned int width, unsigned int height) {
struct wlr_headless_backend *backend =
headless_backend_from_backend(wlr_backend);
struct wlr_allocator *allocator = backend_get_allocator(wlr_backend);
struct wlr_headless_output *output =
calloc(1, sizeof(struct wlr_headless_output));
@ -190,7 +195,7 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
backend->display);
struct wlr_output *wlr_output = &output->wlr_output;
output->swapchain = wlr_swapchain_create(backend->allocator,
output->swapchain = wlr_swapchain_create(allocator,
width, height, backend->format);
if (!output->swapchain) {
goto error;

6
include/backend/headless.h
View File

@ -9,16 +9,14 @@
struct wlr_headless_backend {
struct wlr_backend backend;
int drm_fd;
struct wlr_renderer *renderer;
struct wlr_allocator *allocator;
struct wlr_drm_format *format;
struct wl_display *display;
struct wl_list outputs;
size_t last_output_num;
struct wl_list input_devices;
struct wl_listener display_destroy;
struct wl_listener renderer_destroy;
bool has_parent_renderer;
struct wlr_renderer *parent_renderer;
struct wl_listener parent_renderer_destroy;
bool started;
};