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backend/wayland: add support for wl_shm buffers

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This commit is contained in:
Simon Ser 2021-02-09 23:29:44 +01:00
parent c6b009ef85
commit 80865351bd
3 changed files with 80 additions and 30 deletions
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19
backend/wayland/backend.c
View file

@ -20,6 +20,7 @@
#include "backend/wayland.h"
#include "render/drm_format_set.h"
#include "render/gbm_allocator.h"
#include "render/pixel_format.h"
#include "render/wlr_renderer.h"
#include "util/signal.h"
@ -190,6 +191,17 @@ static const struct wl_drm_listener legacy_drm_listener = {
.capabilities = legacy_drm_handle_capabilities,
};
static void shm_handle_format(void *data, struct wl_shm *shm,
uint32_t shm_format) {
struct wlr_wl_backend *wl = data;
uint32_t drm_format = convert_wl_shm_format_to_drm(shm_format);
wlr_drm_format_set_add(&wl->shm_formats, drm_format, DRM_FORMAT_MOD_INVALID);
}
static const struct wl_shm_listener shm_listener = {
.format = shm_handle_format,
};
static void registry_global(void *data, struct wl_registry *registry,
uint32_t name, const char *iface, uint32_t version) {
struct wlr_wl_backend *wl = data;
@ -233,6 +245,9 @@ static void registry_global(void *data, struct wl_registry *registry,
} else if (strcmp(iface, wl_drm_interface.name) == 0) {
wl->legacy_drm = wl_registry_bind(registry, name, &wl_drm_interface, 1);
wl_drm_add_listener(wl->legacy_drm, &legacy_drm_listener, wl);
} else if (strcmp(iface, wl_shm_interface.name) == 0) {
wl->shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
wl_shm_add_listener(wl->shm, &shm_listener, wl);
}
}
@ -302,6 +317,7 @@ static void backend_destroy(struct wlr_backend *backend) {
wlr_allocator_destroy(wl->allocator);
close(wl->drm_fd);
wlr_drm_format_set_finish(&wl->shm_formats);
wlr_drm_format_set_finish(&wl->linux_dmabuf_v1_formats);
struct wlr_wl_buffer *buffer, *tmp_buffer;
@ -322,6 +338,9 @@ static void backend_destroy(struct wlr_backend *backend) {
if (wl->zwp_linux_dmabuf_v1) {
zwp_linux_dmabuf_v1_destroy(wl->zwp_linux_dmabuf_v1);
}
if (wl->shm) {
wl_shm_destroy(wl->shm);
}
if (wl->zwp_relative_pointer_manager_v1) {
zwp_relative_pointer_manager_v1_destroy(wl->zwp_relative_pointer_manager_v1);
}

89
backend/wayland/output.c
View file

@ -7,6 +7,7 @@
#include <sys/types.h>
#include <unistd.h>
#include <drm_fourcc.h>
#include <wayland-client.h>
#include <wlr/interfaces/wlr_output.h>
@ -15,6 +16,7 @@
#include <wlr/util/log.h>
#include "backend/wayland.h"
#include "render/pixel_format.h"
#include "render/swapchain.h"
#include "render/wlr_renderer.h"
#include "util/signal.h"
@ -161,17 +163,58 @@ static void buffer_handle_buffer_destroy(struct wl_listener *listener,
static bool test_buffer(struct wlr_wl_backend *wl,
struct wlr_buffer *wlr_buffer) {
struct wlr_dmabuf_attributes attribs;
if (!wlr_buffer_get_dmabuf(wlr_buffer, &attribs)) {
struct wlr_dmabuf_attributes dmabuf;
struct wlr_shm_attributes shm;
if (wlr_buffer_get_dmabuf(wlr_buffer, &dmabuf)) {
return wlr_drm_format_set_has(&wl->linux_dmabuf_v1_formats,
dmabuf.format, dmabuf.modifier);
} else if (wlr_buffer_get_shm(wlr_buffer, &shm)) {
return wlr_drm_format_set_has(&wl->shm_formats, shm.format,
DRM_FORMAT_MOD_INVALID);
} else {
return false;
}
}
if (!wlr_drm_format_set_has(&wl->linux_dmabuf_v1_formats,
attribs.format, attribs.modifier)) {
return false;
static struct wl_buffer *import_dmabuf(struct wlr_wl_backend *wl,
struct wlr_dmabuf_attributes *dmabuf) {
uint32_t modifier_hi = dmabuf->modifier >> 32;
uint32_t modifier_lo = (uint32_t)dmabuf->modifier;
struct zwp_linux_buffer_params_v1 *params =
zwp_linux_dmabuf_v1_create_params(wl->zwp_linux_dmabuf_v1);
for (int i = 0; i < dmabuf->n_planes; i++) {
zwp_linux_buffer_params_v1_add(params, dmabuf->fd[i], i,
dmabuf->offset[i], dmabuf->stride[i], modifier_hi, modifier_lo);
}
return true;
uint32_t flags = 0;
if (dmabuf->flags & WLR_DMABUF_ATTRIBUTES_FLAGS_Y_INVERT) {
flags |= ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT;
}
if (dmabuf->flags & WLR_DMABUF_ATTRIBUTES_FLAGS_INTERLACED) {
flags |= ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_INTERLACED;
}
if (dmabuf->flags & WLR_DMABUF_ATTRIBUTES_FLAGS_BOTTOM_FIRST) {
flags |= ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_BOTTOM_FIRST;
}
struct wl_buffer *wl_buffer = zwp_linux_buffer_params_v1_create_immed(
params, dmabuf->width, dmabuf->height, dmabuf->format, flags);
// TODO: handle create() errors
return wl_buffer;
}
static struct wl_buffer *import_shm(struct wlr_wl_backend *wl,
struct wlr_shm_attributes *shm) {
enum wl_shm_format wl_shm_format = convert_drm_format_to_wl_shm(shm->format);
uint32_t size = shm->stride * shm->height;
struct wl_shm_pool *pool = wl_shm_create_pool(wl->shm, shm->fd, size);
if (pool == NULL) {
return NULL;
}
struct wl_buffer *wl_buffer = wl_shm_pool_create_buffer(pool, shm->offset,
shm->width, shm->height, shm->stride, wl_shm_format);
wl_shm_pool_destroy(pool);
return wl_buffer;
}
static struct wlr_wl_buffer *create_wl_buffer(struct wlr_wl_backend *wl,
@ -180,34 +223,20 @@ static struct wlr_wl_buffer *create_wl_buffer(struct wlr_wl_backend *wl,
return NULL;
}
struct wlr_dmabuf_attributes attribs;
if (!wlr_buffer_get_dmabuf(wlr_buffer, &attribs)) {
struct wlr_dmabuf_attributes dmabuf;
struct wlr_shm_attributes shm;
struct wl_buffer *wl_buffer;
if (wlr_buffer_get_dmabuf(wlr_buffer, &dmabuf)) {
wl_buffer = import_dmabuf(wl, &dmabuf);
} else if (wlr_buffer_get_shm(wlr_buffer, &shm)) {
wl_buffer = import_shm(wl, &shm);
} else {
return NULL;
}
uint32_t modifier_hi = attribs.modifier >> 32;
uint32_t modifier_lo = (uint32_t)attribs.modifier;
struct zwp_linux_buffer_params_v1 *params =
zwp_linux_dmabuf_v1_create_params(wl->zwp_linux_dmabuf_v1);
for (int i = 0; i < attribs.n_planes; i++) {
zwp_linux_buffer_params_v1_add(params, attribs.fd[i], i,
attribs.offset[i], attribs.stride[i], modifier_hi, modifier_lo);
if (wl_buffer == NULL) {
return NULL;
}
uint32_t flags = 0;
if (attribs.flags & WLR_DMABUF_ATTRIBUTES_FLAGS_Y_INVERT) {
flags |= ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT;
}
if (attribs.flags & WLR_DMABUF_ATTRIBUTES_FLAGS_INTERLACED) {
flags |= ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_INTERLACED;
}
if (attribs.flags & WLR_DMABUF_ATTRIBUTES_FLAGS_BOTTOM_FIRST) {
flags |= ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_BOTTOM_FIRST;
}
struct wl_buffer *wl_buffer = zwp_linux_buffer_params_v1_create_immed(
params, attribs.width, attribs.height, attribs.format, flags);
// TODO: handle create() errors
struct wlr_wl_buffer *buffer = calloc(1, sizeof(struct wlr_wl_buffer));
if (buffer == NULL) {
wl_buffer_destroy(wl_buffer);

2
include/backend/wayland.h
View file

@ -38,10 +38,12 @@ struct wlr_wl_backend {
struct zxdg_decoration_manager_v1 *zxdg_decoration_manager_v1;
struct zwp_pointer_gestures_v1 *zwp_pointer_gestures_v1;
struct wp_presentation *presentation;
struct wl_shm *shm;
struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf_v1;
struct zwp_relative_pointer_manager_v1 *zwp_relative_pointer_manager_v1;
struct wl_list seats; // wlr_wl_seat.link
struct zwp_tablet_manager_v2 *tablet_manager;
struct wlr_drm_format_set shm_formats;
struct wlr_drm_format_set linux_dmabuf_v1_formats;
struct wl_drm *legacy_drm;
char *drm_render_name;