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xserver/hw/xwayland/xwayland-glamor-gbm.c

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/*
* Copyright © 2011-2014 Intel Corporation
* Copyright © 2017 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including
* the next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Lyude Paul <lyude@redhat.com>
*
*/
#include <xwayland-config.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include <xf86drm.h>
#include <drm_fourcc.h>
#define MESA_EGL_NO_X11_HEADERS
#define EGL_NO_X11
#include <gbm.h>
#include <glamor_egl.h>
#include <glamor.h>
#include <glamor_context.h>
#include <dri3.h>
#include "drm-client-protocol.h"
#include "xwayland-glamor.h"
#include "xwayland-pixmap.h"
#include "xwayland-screen.h"
#include "linux-dmabuf-unstable-v1-client-protocol.h"
struct xwl_gbm_private {
drmDevice *device;
char *device_name;
struct gbm_device *gbm;
int drm_fd;
Bool fd_render_node;
Bool drm_authenticated;
Bool dmabuf_capable;
Bool glamor_gles;
/* Set if wl_drm is available */
struct wl_drm *drm;
uint32_t capabilities;
};
struct xwl_pixmap {
struct wl_buffer *buffer;
EGLImage image;
unsigned int texture;
struct gbm_bo *bo;
Bool implicit_modifier;
};
static DevPrivateKeyRec xwl_gbm_private_key;
static DevPrivateKeyRec xwl_auth_state_private_key;
static inline struct xwl_gbm_private *
xwl_gbm_get(struct xwl_screen *xwl_screen)
{
return dixLookupPrivate(&xwl_screen->screen->devPrivates,
&xwl_gbm_private_key);
}
/* There is a workaround for Mesa behaviour, which will cause black windows
* when RGBX formats is using. Why exactly? There is an explanation:
* 1. We create GL_RGBA texture with GL_UNSIGNED_BYTE type, all allowed by ES.
* 2 .We export these texture to GBM bo with GBM_FORMAT_XRGB8888, and Mesa sets internal
* format of these textures as GL_RGB8 (mesa/mesa!5034 (merged))
* 3. We import these BO at some point, and use glTexSubImage on it with GL_RGBA format
* and with GL_UNSIGNED_BYTE type, as we creates. Mesa checks its internalformat
* in glTexSubImage2D and fails due to GLES internal format limitation
* (see https://registry.khronos.org/OpenGL/specs/es/2.0/es_full_spec_2.0.pdf, section 3.7.1).
*/
static uint32_t
gbm_format_for_depth(int depth, int gles)
{
switch (depth) {
case 16:
return GBM_FORMAT_RGB565;
case 24:
if (gles)
return GBM_FORMAT_ARGB8888;
return GBM_FORMAT_XRGB8888;
case 30:
return GBM_FORMAT_ARGB2101010;
default:
ErrorF("unexpected depth: %d\n", depth);
case 32:
return GBM_FORMAT_ARGB8888;
}
}
static char
is_device_path_render_node (const char *device_path)
{
char is_render_node;
int fd;
fd = open(device_path, O_RDWR | O_CLOEXEC);
if (fd < 0)
return 0;
is_render_node = (drmGetNodeTypeFromFd(fd) == DRM_NODE_RENDER);
close(fd);
return is_render_node;
}
static PixmapPtr
xwl_glamor_gbm_create_pixmap_for_bo(ScreenPtr screen, struct gbm_bo *bo,
int depth,
Bool implicit_modifier)
{
PixmapPtr pixmap;
struct xwl_pixmap *xwl_pixmap;
struct xwl_screen *xwl_screen = xwl_screen_get(screen);
#ifdef GBM_BO_FD_FOR_PLANE
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
uint64_t modifier = gbm_bo_get_modifier(bo);
const int num_planes = gbm_bo_get_plane_count(bo);
int fds[GBM_MAX_PLANES];
int plane;
int attr_num = 0;
EGLint img_attrs[64] = {0};
enum PlaneAttrs {
PLANE_FD,
PLANE_OFFSET,
PLANE_PITCH,
PLANE_MODIFIER_LO,
PLANE_MODIFIER_HI,
NUM_PLANE_ATTRS
};
static const EGLint planeAttrs[][NUM_PLANE_ATTRS] = {
{
EGL_DMA_BUF_PLANE0_FD_EXT,
EGL_DMA_BUF_PLANE0_OFFSET_EXT,
EGL_DMA_BUF_PLANE0_PITCH_EXT,
EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT,
EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT,
},
{
EGL_DMA_BUF_PLANE1_FD_EXT,
EGL_DMA_BUF_PLANE1_OFFSET_EXT,
EGL_DMA_BUF_PLANE1_PITCH_EXT,
EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT,
EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT,
},
{
EGL_DMA_BUF_PLANE2_FD_EXT,
EGL_DMA_BUF_PLANE2_OFFSET_EXT,
EGL_DMA_BUF_PLANE2_PITCH_EXT,
EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT,
EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT,
},
{
EGL_DMA_BUF_PLANE3_FD_EXT,
EGL_DMA_BUF_PLANE3_OFFSET_EXT,
EGL_DMA_BUF_PLANE3_PITCH_EXT,
EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT,
EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT,
},
};
for (plane = 0; plane < num_planes; plane++) fds[plane] = -1;
#endif
xwl_pixmap = calloc(1, sizeof(*xwl_pixmap));
if (xwl_pixmap == NULL)
return NULL;
pixmap = glamor_create_pixmap(screen,
gbm_bo_get_width(bo),
gbm_bo_get_height(bo),
depth,
GLAMOR_CREATE_PIXMAP_NO_TEXTURE);
if (!pixmap) {
free(xwl_pixmap);
return NULL;
}
xwl_glamor_egl_make_current(xwl_screen);
xwl_pixmap->bo = bo;
xwl_pixmap->buffer = NULL;
xwl_pixmap->implicit_modifier = implicit_modifier;
#ifdef GBM_BO_FD_FOR_PLANE
if (xwl_gbm->dmabuf_capable) {
#define ADD_ATTR(attrs, num, attr) \
do { \
assert(((num) + 1) < (sizeof(attrs) / sizeof((attrs)[0]))); \
(attrs)[(num)++] = (attr); \
} while (0)
ADD_ATTR(img_attrs, attr_num, EGL_WIDTH);
ADD_ATTR(img_attrs, attr_num, gbm_bo_get_width(bo));
ADD_ATTR(img_attrs, attr_num, EGL_HEIGHT);
ADD_ATTR(img_attrs, attr_num, gbm_bo_get_height(bo));
ADD_ATTR(img_attrs, attr_num, EGL_LINUX_DRM_FOURCC_EXT);
ADD_ATTR(img_attrs, attr_num, gbm_bo_get_format(bo));
for (plane = 0; plane < num_planes; plane++) {
fds[plane] = gbm_bo_get_fd_for_plane(bo, plane);
ADD_ATTR(img_attrs, attr_num, planeAttrs[plane][PLANE_FD]);
ADD_ATTR(img_attrs, attr_num, fds[plane]);
ADD_ATTR(img_attrs, attr_num, planeAttrs[plane][PLANE_OFFSET]);
ADD_ATTR(img_attrs, attr_num, gbm_bo_get_offset(bo, plane));
ADD_ATTR(img_attrs, attr_num, planeAttrs[plane][PLANE_PITCH]);
ADD_ATTR(img_attrs, attr_num, gbm_bo_get_stride_for_plane(bo, plane));
ADD_ATTR(img_attrs, attr_num, planeAttrs[plane][PLANE_MODIFIER_LO]);
ADD_ATTR(img_attrs, attr_num, (uint32_t)(modifier & 0xFFFFFFFFULL));
ADD_ATTR(img_attrs, attr_num, planeAttrs[plane][PLANE_MODIFIER_HI]);
ADD_ATTR(img_attrs, attr_num, (uint32_t)(modifier >> 32ULL));
}
ADD_ATTR(img_attrs, attr_num, EGL_NONE);
#undef ADD_ATTR
xwl_pixmap->image = eglCreateImageKHR(xwl_screen->egl_display,
EGL_NO_CONTEXT,
EGL_LINUX_DMA_BUF_EXT,
NULL,
img_attrs);
for (plane = 0; plane < num_planes; plane++) {
close(fds[plane]);
fds[plane] = -1;
}
}
else
#endif
{
xwl_pixmap->image = eglCreateImageKHR(xwl_screen->egl_display,
EGL_NO_CONTEXT,
EGL_NATIVE_PIXMAP_KHR,
xwl_pixmap->bo, NULL);
}
if (xwl_pixmap->image == EGL_NO_IMAGE_KHR)
goto error;
glGenTextures(1, &xwl_pixmap->texture);
glBindTexture(GL_TEXTURE_2D, xwl_pixmap->texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, xwl_pixmap->image);
if (eglGetError() != EGL_SUCCESS)
goto error;
glBindTexture(GL_TEXTURE_2D, 0);
if (!glamor_set_pixmap_texture(pixmap, xwl_pixmap->texture))
goto error;
glamor_set_pixmap_type(pixmap, GLAMOR_TEXTURE_DRM);
xwl_pixmap_set_private(pixmap, xwl_pixmap);
return pixmap;
error:
if (xwl_pixmap->image != EGL_NO_IMAGE_KHR)
eglDestroyImageKHR(xwl_screen->egl_display, xwl_pixmap->image);
if (pixmap)
glamor_destroy_pixmap(pixmap);
free(xwl_pixmap);
return NULL;
}
static PixmapPtr
xwl_glamor_gbm_create_pixmap_internal(struct xwl_screen *xwl_screen,
DrawablePtr drawable,
int width, int height, int depth,
unsigned int hint,
Bool implicit_scanout)
{
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
struct gbm_bo *bo = NULL;
PixmapPtr pixmap = NULL;
uint32_t num_modifiers = 0;
uint64_t *modifiers = NULL;
if (width > 0 && height > 0 && depth >= 15 &&
(hint == CREATE_PIXMAP_USAGE_BACKING_PIXMAP ||
hint == CREATE_PIXMAP_USAGE_SHARED ||
(xwl_screen->rootless && hint == 0))) {
uint32_t format = gbm_format_for_depth(depth, xwl_gbm->glamor_gles);
Bool implicit = FALSE;
#ifdef GBM_BO_WITH_MODIFIERS
if (xwl_gbm->dmabuf_capable) {
Bool supports_scanout = FALSE;
if (drawable) {
xwl_glamor_get_drawable_modifiers_and_scanout(drawable,
format,
&num_modifiers,
&modifiers,
&supports_scanout);
}
if (num_modifiers == 0) {
xwl_glamor_get_modifiers(xwl_screen->screen, format,
&num_modifiers, &modifiers);
}
if (num_modifiers > 0) {
#ifdef GBM_BO_WITH_MODIFIERS2
uint32_t usage = GBM_BO_USE_RENDERING;
if (supports_scanout)
usage |= GBM_BO_USE_SCANOUT;
bo = gbm_bo_create_with_modifiers2(xwl_gbm->gbm, width, height,
format, modifiers, num_modifiers,
usage);
#else
bo = gbm_bo_create_with_modifiers(xwl_gbm->gbm, width, height,
format, modifiers, num_modifiers);
#endif
}
}
#endif
if (bo == NULL) {
uint32_t usage = GBM_BO_USE_RENDERING;
implicit = TRUE;
if (implicit_scanout)
usage |= GBM_BO_USE_SCANOUT;
if (num_modifiers > 0) {
Bool has_mod_invalid = FALSE, has_mod_linear = FALSE;
int i;
for (i = 0; i < num_modifiers; i++) {
if (modifiers[i] == DRM_FORMAT_MOD_INVALID)
has_mod_invalid = TRUE;
else if (modifiers[i] == DRM_FORMAT_MOD_LINEAR)
has_mod_linear = TRUE;
}
if (!has_mod_invalid && has_mod_linear)
usage |= GBM_BO_USE_LINEAR;
}
bo = gbm_bo_create(xwl_gbm->gbm, width, height, format, usage);
}
if (bo) {
pixmap = xwl_glamor_gbm_create_pixmap_for_bo(xwl_screen->screen, bo, depth, implicit);
if (!pixmap) {
gbm_bo_destroy(bo);
}
else if (xwl_screen->rootless && hint == CREATE_PIXMAP_USAGE_BACKING_PIXMAP) {
glamor_clear_pixmap(pixmap);
}
}
}
if (!pixmap)
pixmap = glamor_create_pixmap(xwl_screen->screen, width, height, depth, hint);
free(modifiers);
return pixmap;
}
static PixmapPtr
xwl_glamor_gbm_create_pixmap(ScreenPtr screen,
int width, int height, int depth,
unsigned int hint)
{
return xwl_glamor_gbm_create_pixmap_internal(xwl_screen_get(screen), NULL,
width, height, depth, hint, FALSE);
}
static PixmapPtr
xwl_glamor_gbm_create_pixmap_for_window(struct xwl_window *xwl_window)
{
WindowPtr window = xwl_window->window;
unsigned border_width = 2 * window->borderWidth;
return xwl_glamor_gbm_create_pixmap_internal(xwl_window->xwl_screen,
&window->drawable,
window->drawable.width + border_width,
window->drawable.height + border_width,
window->drawable.depth,
CREATE_PIXMAP_USAGE_BACKING_PIXMAP,
xwl_window->has_implicit_scanout_support);
}
static Bool
xwl_glamor_gbm_destroy_pixmap(PixmapPtr pixmap)
{
struct xwl_screen *xwl_screen = xwl_screen_get(pixmap->drawable.pScreen);
struct xwl_pixmap *xwl_pixmap = xwl_pixmap_get(pixmap);
if (xwl_pixmap && pixmap->refcnt == 1) {
xwl_pixmap_del_buffer_release_cb(pixmap);
if (xwl_pixmap->buffer)
wl_buffer_destroy(xwl_pixmap->buffer);
eglDestroyImageKHR(xwl_screen->egl_display, xwl_pixmap->image);
if (xwl_pixmap->bo)
gbm_bo_destroy(xwl_pixmap->bo);
free(xwl_pixmap);
}
return glamor_destroy_pixmap(pixmap);
}
static const struct wl_buffer_listener xwl_glamor_gbm_buffer_listener = {
xwl_pixmap_buffer_release_cb,
};
#ifdef GBM_BO_WITH_MODIFIERS
static Bool
init_buffer_params_with_modifiers(struct xwl_pixmap *xwl_pixmap,
uint64_t *modifier,
int *num_planes,
int *prime_fds,
uint32_t *strides,
uint32_t *offsets)
{
#ifndef GBM_BO_FD_FOR_PLANE
int32_t first_handle;
#endif
int i;
*num_planes = gbm_bo_get_plane_count(xwl_pixmap->bo);
*modifier = gbm_bo_get_modifier(xwl_pixmap->bo);
for (i = 0; i < *num_planes; i++) {
#ifdef GBM_BO_FD_FOR_PLANE
prime_fds[i] = gbm_bo_get_fd_for_plane(xwl_pixmap->bo, i);
#else
union gbm_bo_handle plane_handle;
plane_handle = gbm_bo_get_handle_for_plane(xwl_pixmap->bo, i);
if (i == 0)
first_handle = plane_handle.s32;
/* If all planes point to the same object as the first plane, i.e. they
* all have the same handle, we can fall back to the non-planar
* gbm_bo_get_fd without losing information. If they point to different
* objects we are out of luck and need to give up.
*/
if (first_handle == plane_handle.s32)
prime_fds[i] = gbm_bo_get_fd(xwl_pixmap->bo);
else
prime_fds[i] = -1;
#endif
if (prime_fds[i] == -1) {
while (--i >= 0)
close(prime_fds[i]);
return FALSE;
}
strides[i] = gbm_bo_get_stride_for_plane(xwl_pixmap->bo, i);
offsets[i] = gbm_bo_get_offset(xwl_pixmap->bo, i);
}
return TRUE;
}
#endif
static Bool
init_buffer_params_fallback(struct xwl_pixmap *xwl_pixmap,
uint64_t *modifier,
int *num_planes,
int *prime_fds,
uint32_t *strides,
uint32_t *offsets)
{
*num_planes = 1;
*modifier = DRM_FORMAT_MOD_INVALID;
prime_fds[0] = gbm_bo_get_fd(xwl_pixmap->bo);
if (prime_fds[0] == -1)
return FALSE;
strides[0] = gbm_bo_get_stride(xwl_pixmap->bo);
offsets[0] = 0;
return TRUE;
}
static struct wl_buffer *
xwl_glamor_gbm_get_wl_buffer_for_pixmap(PixmapPtr pixmap)
{
struct xwl_screen *xwl_screen = xwl_screen_get(pixmap->drawable.pScreen);
struct xwl_pixmap *xwl_pixmap = xwl_pixmap_get(pixmap);
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
unsigned short width = pixmap->drawable.width;
unsigned short height = pixmap->drawable.height;
uint32_t format;
int num_planes;
int prime_fds[4];
uint32_t strides[4];
uint32_t offsets[4];
uint64_t modifier;
int i;
if (xwl_pixmap == NULL)
return NULL;
if (xwl_pixmap->buffer) {
/* Buffer already exists. */
return xwl_pixmap->buffer;
}
if (!xwl_pixmap->bo)
return NULL;
format = wl_drm_format_for_depth(pixmap->drawable.depth);
#ifdef GBM_BO_WITH_MODIFIERS
if (!xwl_pixmap->implicit_modifier) {
if (!init_buffer_params_with_modifiers(xwl_pixmap,
&modifier,
&num_planes,
prime_fds,
strides,
offsets))
return NULL;
} else
#endif
{
if (!init_buffer_params_fallback(xwl_pixmap,
&modifier,
&num_planes,
prime_fds,
strides,
offsets))
return NULL;
}
if (xwl_screen->dmabuf &&
xwl_glamor_is_modifier_supported(xwl_screen, format, modifier)) {
struct zwp_linux_buffer_params_v1 *params;
params = zwp_linux_dmabuf_v1_create_params(xwl_screen->dmabuf);
for (i = 0; i < num_planes; i++) {
zwp_linux_buffer_params_v1_add(params, prime_fds[i], i,
offsets[i], strides[i],
modifier >> 32, modifier & 0xffffffff);
}
xwl_pixmap->buffer =
zwp_linux_buffer_params_v1_create_immed(params, width, height,
format, 0);
zwp_linux_buffer_params_v1_destroy(params);
} else if (num_planes == 1 && modifier == DRM_FORMAT_MOD_INVALID &&
xwl_gbm->drm) {
xwl_pixmap->buffer =
wl_drm_create_prime_buffer(xwl_gbm->drm, prime_fds[0], width, height,
format,
0, gbm_bo_get_stride(xwl_pixmap->bo),
0, 0,
0, 0);
}
for (i = 0; i < num_planes; i++)
close(prime_fds[i]);
/* Add our listener now */
if (xwl_pixmap->buffer)
wl_buffer_add_listener(xwl_pixmap->buffer,
&xwl_glamor_gbm_buffer_listener, pixmap);
return xwl_pixmap->buffer;
}
static void
xwl_glamor_gbm_cleanup(struct xwl_screen *xwl_screen)
{
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
if (xwl_gbm->device_name)
free(xwl_gbm->device_name);
drmFreeDevice(&xwl_gbm->device);
if (xwl_gbm->drm_fd)
close(xwl_gbm->drm_fd);
if (xwl_gbm->drm)
wl_drm_destroy(xwl_gbm->drm);
if (xwl_gbm->gbm)
gbm_device_destroy(xwl_gbm->gbm);
free(xwl_gbm);
}
struct xwl_auth_state {
int fd;
ClientPtr client;
struct wl_callback *callback;
};
static void
free_xwl_auth_state(ClientPtr pClient, struct xwl_auth_state *state)
{
dixSetPrivate(&pClient->devPrivates, &xwl_auth_state_private_key, NULL);
if (state) {
wl_callback_destroy(state->callback);
free(state);
}
}
static void
xwl_auth_state_client_callback(CallbackListPtr *pcbl, void *unused, void *data)
{
NewClientInfoRec *clientinfo = (NewClientInfoRec *) data;
ClientPtr pClient = clientinfo->client;
struct xwl_auth_state *state;
switch (pClient->clientState) {
case ClientStateGone:
case ClientStateRetained:
state = dixLookupPrivate(&pClient->devPrivates,
&xwl_auth_state_private_key);
free_xwl_auth_state(pClient, state);
break;
default:
break;
}
}
static void
sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
{
struct xwl_auth_state *state = data;
ClientPtr client = state->client;
/* if the client is gone, the callback is cancelled so it's safe to
* assume the client is still in ClientStateRunning at this point...
*/
dri3_send_open_reply(client, state->fd);
AttendClient(client);
free_xwl_auth_state(client, state);
}
static const struct wl_callback_listener sync_listener = {
sync_callback
};
static int
xwl_dri3_open_client(ClientPtr client,
ScreenPtr screen,
RRProviderPtr provider,
int *pfd)
{
struct xwl_screen *xwl_screen = xwl_screen_get(screen);
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
struct xwl_auth_state *state;
drm_magic_t magic;
int fd;
fd = open(xwl_gbm->device_name, O_RDWR | O_CLOEXEC);
if (fd < 0)
return BadAlloc;
if (xwl_gbm->fd_render_node) {
*pfd = fd;
return Success;
}
state = malloc(sizeof *state);
if (state == NULL) {
close(fd);
return BadAlloc;
}
state->client = client;
state->fd = fd;
if (drmGetMagic(state->fd, &magic) < 0) {
close(state->fd);
free(state);
return BadMatch;
}
wl_drm_authenticate(xwl_gbm->drm, magic);
state->callback = wl_display_sync(xwl_screen->display);
wl_callback_add_listener(state->callback, &sync_listener, state);
dixSetPrivate(&client->devPrivates, &xwl_auth_state_private_key, state);
IgnoreClient(client);
return Success;
}
PixmapPtr
glamor_pixmap_from_fds(ScreenPtr screen, CARD8 num_fds, const int *fds,
CARD16 width, CARD16 height,
const CARD32 *strides, const CARD32 *offsets,
CARD8 depth, CARD8 bpp, uint64_t modifier)
{
struct xwl_screen *xwl_screen = xwl_screen_get(screen);
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
struct gbm_bo *bo = NULL;
PixmapPtr pixmap;
int i;
Bool implicit = FALSE;
if (width == 0 || height == 0 || num_fds == 0 ||
depth < 15 || bpp != BitsPerPixel(depth) ||
strides[0] < width * bpp / 8)
goto error;
if (xwl_gbm->dmabuf_capable && modifier != DRM_FORMAT_MOD_INVALID) {
#ifdef GBM_BO_WITH_MODIFIERS
struct gbm_import_fd_modifier_data data;
data.width = width;
data.height = height;
data.num_fds = num_fds;
data.format = gbm_format_for_depth(depth, xwl_gbm->glamor_gles);
data.modifier = modifier;
for (i = 0; i < num_fds; i++) {
data.fds[i] = fds[i];
data.strides[i] = strides[i];
data.offsets[i] = offsets[i];
}
bo = gbm_bo_import(xwl_gbm->gbm, GBM_BO_IMPORT_FD_MODIFIER, &data,
GBM_BO_USE_RENDERING);
#endif
} else if (num_fds == 1) {
struct gbm_import_fd_data data;
data.fd = fds[0];
data.width = width;
data.height = height;
data.stride = strides[0];
data.format = gbm_format_for_depth(depth, xwl_gbm->glamor_gles);
bo = gbm_bo_import(xwl_gbm->gbm, GBM_BO_IMPORT_FD, &data,
GBM_BO_USE_RENDERING);
implicit = TRUE;
} else {
goto error;
}
if (bo == NULL)
goto error;
pixmap = xwl_glamor_gbm_create_pixmap_for_bo(screen, bo, depth, implicit);
if (pixmap == NULL) {
gbm_bo_destroy(bo);
goto error;
}
return pixmap;
error:
return NULL;
}
int
glamor_egl_fds_from_pixmap(ScreenPtr screen, PixmapPtr pixmap, int *fds,
uint32_t *strides, uint32_t *offsets,
uint64_t *modifier)
{
struct xwl_pixmap *xwl_pixmap;
#ifdef GBM_BO_WITH_MODIFIERS
#ifndef GBM_BO_FD_FOR_PLANE
int32_t first_handle;
#endif
uint32_t num_fds;
int i;
#endif
xwl_pixmap = xwl_pixmap_get(pixmap);
if (xwl_pixmap == NULL)
return 0;
if (!xwl_pixmap->bo)
return 0;
#ifdef GBM_BO_WITH_MODIFIERS
num_fds = gbm_bo_get_plane_count(xwl_pixmap->bo);
*modifier = gbm_bo_get_modifier(xwl_pixmap->bo);
for (i = 0; i < num_fds; i++) {
#ifdef GBM_BO_FD_FOR_PLANE
fds[i] = gbm_bo_get_fd_for_plane(xwl_pixmap->bo, i);
#else
union gbm_bo_handle plane_handle;
plane_handle = gbm_bo_get_handle_for_plane(xwl_pixmap->bo, i);
if (i == 0)
first_handle = plane_handle.s32;
/* If all planes point to the same object as the first plane, i.e. they
* all have the same handle, we can fall back to the non-planar
* gbm_bo_get_fd without losing information. If they point to different
* objects we are out of luck and need to give up.
*/
if (first_handle == plane_handle.s32)
fds[i] = gbm_bo_get_fd(xwl_pixmap->bo);
else
fds[i] = -1;
#endif
if (fds[i] == -1) {
while (--i >= 0)
close(fds[i]);
return 0;
}
strides[i] = gbm_bo_get_stride_for_plane(xwl_pixmap->bo, i);
offsets[i] = gbm_bo_get_offset(xwl_pixmap->bo, i);
}
return num_fds;
#else
*modifier = DRM_FORMAT_MOD_INVALID;
fds[0] = gbm_bo_get_fd(xwl_pixmap->bo);
if (fds[0] == -1)
return 0;
strides[0] = gbm_bo_get_stride(xwl_pixmap->bo);
offsets[0] = 0;
return 1;
#endif
}
/* Not actually used, just defined here so there's something for
* _glamor_egl_fds_from_pixmap() to link against
*/
int
glamor_egl_fd_from_pixmap(ScreenPtr screen, PixmapPtr pixmap,
CARD16 *stride, CARD32 *size)
{
return -1;
}
static const dri3_screen_info_rec xwl_dri3_info = {
.version = 2,
.open = NULL,
.pixmap_from_fds = glamor_pixmap_from_fds,
.fds_from_pixmap = glamor_fds_from_pixmap,
.open_client = xwl_dri3_open_client,
.get_formats = xwl_glamor_get_formats,
.get_modifiers = xwl_glamor_get_modifiers,
.get_drawable_modifiers = xwl_glamor_get_drawable_modifiers,
};
static const char *
get_render_node_path_for_device(const drmDevicePtr drm_device,
const char *device_path)
{
const char *render_node_path;
int i;
if (!(drm_device->available_nodes & (1 << DRM_NODE_RENDER)))
return NULL;
render_node_path = drm_device->nodes[DRM_NODE_RENDER];
for (i = 0; i < DRM_NODE_MAX; i++) {
if (!(drm_device->available_nodes & (1 << i)))
continue;
if (strcmp(device_path, drm_device->nodes[i]) == 0)
return render_node_path;
}
return NULL;
}
static char *
get_render_node_path(const char *device_path)
{
drmDevicePtr *devices = NULL;
char *render_node_path = NULL;
int i, n_devices, max_devices;
max_devices = drmGetDevices2(0, NULL, 0);
if (max_devices <= 0)
goto out;
devices = calloc(max_devices, sizeof(drmDevicePtr));
if (!devices)
goto out;
n_devices = drmGetDevices2(0, devices, max_devices);
if (n_devices < 0)
goto out;
for (i = 0; i < n_devices; i++) {
const char *node_path = get_render_node_path_for_device(devices[i],
device_path);
if (node_path) {
render_node_path = strdup(node_path);
break;
}
}
out:
free(devices);
return render_node_path;
}
static void
xwl_drm_handle_device(void *data, struct wl_drm *drm, const char *device)
{
struct xwl_screen *xwl_screen = data;
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
drm_magic_t magic;
char *render_node_path = NULL;
if (!is_device_path_render_node(device))
render_node_path = get_render_node_path(device);
if (render_node_path)
xwl_gbm->device_name = render_node_path;
else
xwl_gbm->device_name = strdup(device);
if (!xwl_gbm->device_name) {
xwl_glamor_gbm_cleanup(xwl_screen);
return;
}
xwl_gbm->drm_fd = open(xwl_gbm->device_name, O_RDWR | O_CLOEXEC);
if (xwl_gbm->drm_fd == -1) {
ErrorF("wayland-egl: could not open %s (%s)\n",
xwl_gbm->device_name, strerror(errno));
xwl_glamor_gbm_cleanup(xwl_screen);
return;
}
if (drmGetDevice2(xwl_gbm->drm_fd, 0, &xwl_gbm->device) != 0) {
ErrorF("wayland-egl: Could not fetch DRM device %s\n",
xwl_gbm->device_name);
return;
}
if (drmGetNodeTypeFromFd(xwl_gbm->drm_fd) == DRM_NODE_RENDER) {
xwl_gbm->fd_render_node = TRUE;
xwl_screen->expecting_event--;
} else {
drmGetMagic(xwl_gbm->drm_fd, &magic);
wl_drm_authenticate(xwl_gbm->drm, magic);
}
}
static void
xwl_drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
{
}
static void
xwl_drm_handle_authenticated(void *data, struct wl_drm *drm)
{
struct xwl_screen *xwl_screen = data;
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
xwl_gbm->drm_authenticated = TRUE;
xwl_screen->expecting_event--;
}
static void
xwl_drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
{
xwl_gbm_get(data)->capabilities = value;
}
static const struct wl_drm_listener xwl_drm_listener = {
xwl_drm_handle_device,
xwl_drm_handle_format,
xwl_drm_handle_authenticated,
xwl_drm_handle_capabilities
};
Bool
xwl_screen_set_drm_interface(struct xwl_screen *xwl_screen,
uint32_t id, uint32_t version)
{
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
if (version < 2)
return FALSE;
xwl_gbm->drm =
wl_registry_bind(xwl_screen->registry, id, &wl_drm_interface, 2);
wl_drm_add_listener(xwl_gbm->drm, &xwl_drm_listener, xwl_screen);
xwl_screen->expecting_event++;
return TRUE;
}
static Bool
xwl_glamor_gbm_init_wl_registry(struct xwl_screen *xwl_screen,
struct wl_registry *wl_registry,
uint32_t id, const char *name,
uint32_t version)
{
if (strcmp(name, wl_drm_interface.name) == 0) {
xwl_screen_set_drm_interface(xwl_screen, id, version);
return TRUE;
} else if (strcmp(name, zwp_linux_dmabuf_v1_interface.name) == 0) {
xwl_screen_set_dmabuf_interface(xwl_screen, id, version);
return TRUE;
}
/* no match */
return FALSE;
}
static Bool
xwl_glamor_gbm_has_egl_extension(void)
{
return (epoxy_has_egl_extension(NULL, "EGL_MESA_platform_gbm") ||
epoxy_has_egl_extension(NULL, "EGL_KHR_platform_gbm"));
}
static Bool
xwl_glamor_gbm_has_wl_interfaces(struct xwl_screen *xwl_screen)
{
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
if (xwl_gbm->drm == NULL && xwl_screen->dmabuf_protocol_version < 4) {
LogMessageVerb(X_INFO, 3, "glamor: 'wl_drm' not supported and linux-dmabuf v4 not supported\n");
return FALSE;
}
return TRUE;
}
static Bool
xwl_glamor_try_to_make_context_current(struct xwl_screen *xwl_screen)
{
if (xwl_screen->egl_context == EGL_NO_CONTEXT)
return FALSE;
return eglMakeCurrent(xwl_screen->egl_display, EGL_NO_SURFACE,
EGL_NO_SURFACE, xwl_screen->egl_context);
}
static void
xwl_glamor_maybe_destroy_context(struct xwl_screen *xwl_screen)
{
if (xwl_screen->egl_context == EGL_NO_CONTEXT)
return;
eglMakeCurrent(xwl_screen->egl_display, EGL_NO_SURFACE,
EGL_NO_SURFACE, EGL_NO_CONTEXT);
eglDestroyContext(xwl_screen->egl_display, xwl_screen->egl_context);
xwl_screen->egl_context = EGL_NO_CONTEXT;
}
static Bool
xwl_glamor_try_big_gl_api(struct xwl_screen *xwl_screen)
{
static const EGLint config_attribs_core[] = {
EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR,
EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR,
EGL_CONTEXT_MAJOR_VERSION_KHR,
GLAMOR_GL_CORE_VER_MAJOR,
EGL_CONTEXT_MINOR_VERSION_KHR,
GLAMOR_GL_CORE_VER_MINOR,
EGL_NONE
};
int gl_version;
if (!(xwl_screen->glamor & XWL_GLAMOR_GL))
return FALSE;
eglBindAPI(EGL_OPENGL_API);
xwl_screen->egl_context =
eglCreateContext(xwl_screen->egl_display, EGL_NO_CONFIG_KHR,
EGL_NO_CONTEXT, config_attribs_core);
if (xwl_screen->egl_context == EGL_NO_CONTEXT)
xwl_screen->egl_context =
eglCreateContext(xwl_screen->egl_display, EGL_NO_CONFIG_KHR,
EGL_NO_CONTEXT, NULL);
if (!xwl_glamor_try_to_make_context_current(xwl_screen)) {
ErrorF("Failed to make EGL context current with GL\n");
xwl_glamor_maybe_destroy_context(xwl_screen);
return FALSE;
}
/* glamor needs at least GL 2.1, if the GL version is less than 2.1,
* drop the context we created, it's useless.
*/
gl_version = epoxy_gl_version();
if (gl_version < 21) {
ErrorF("Supported GL version is not sufficient (required 21, found %i)\n",
gl_version);
xwl_glamor_maybe_destroy_context(xwl_screen);
return FALSE;
}
return TRUE;
}
static Bool
xwl_glamor_try_gles_api(struct xwl_screen *xwl_screen)
{
const EGLint gles_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION,
2,
EGL_NONE,
};
if (!(xwl_screen->glamor & XWL_GLAMOR_GLES))
return FALSE;
eglBindAPI(EGL_OPENGL_ES_API);
xwl_screen->egl_context = eglCreateContext(xwl_screen->egl_display,
EGL_NO_CONFIG_KHR,
EGL_NO_CONTEXT, gles_attribs);
if (!xwl_glamor_try_to_make_context_current(xwl_screen)) {
ErrorF("Failed to make EGL context current with GLES2\n");
xwl_glamor_maybe_destroy_context(xwl_screen);
return FALSE;
}
return TRUE;
}
static Bool
xwl_glamor_gbm_init_main_dev(struct xwl_screen *xwl_screen)
{
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
drmDevice *main_dev;
while (!xwl_screen->default_feedback.feedback_done) {
if (wl_display_dispatch(xwl_screen->display) < 0) {
ErrorF("Failed to dispatch Wayland display\n");
return FALSE;
}
}
main_dev = xwl_screen->default_feedback.main_dev;
if (!(main_dev->available_nodes & (1 << DRM_NODE_RENDER))) {
ErrorF("Main linux-dmabuf device has no render node\n");
return FALSE;
}
xwl_gbm->device_name = strdup(main_dev->nodes[DRM_NODE_RENDER]);
if (!xwl_gbm->device_name) {
return FALSE;
}
xwl_gbm->drm_fd = open(xwl_gbm->device_name, O_RDWR | O_CLOEXEC);
if (xwl_gbm->drm_fd < 0) {
ErrorF("wayland-egl: could not open %s (%s)\n",
xwl_gbm->device_name, strerror(errno));
return FALSE;
}
if (drmGetDevice2(xwl_gbm->drm_fd, 0, &xwl_gbm->device) != 0) {
ErrorF("wayland-egl: Could not fetch DRM device %s\n",
xwl_gbm->device_name);
return FALSE;
}
xwl_gbm->fd_render_node = TRUE;
return TRUE;
}
static Bool
xwl_glamor_gbm_init_egl(struct xwl_screen *xwl_screen)
{
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
EGLint major, minor;
const GLubyte *renderer;
const char *gbm_backend_name;
if (!xwl_gbm->drm && !xwl_glamor_gbm_init_main_dev(xwl_screen))
return FALSE;
if (!xwl_gbm->fd_render_node && !xwl_gbm->drm_authenticated) {
ErrorF("Failed to get wl_drm, disabling Glamor and DRI3\n");
return FALSE;
}
xwl_gbm->gbm = gbm_create_device(xwl_gbm->drm_fd);
if (!xwl_gbm->gbm) {
ErrorF("couldn't create gbm device\n");
goto error;
}
xwl_screen->egl_display = glamor_egl_get_display(EGL_PLATFORM_GBM_MESA,
xwl_gbm->gbm);
if (xwl_screen->egl_display == EGL_NO_DISPLAY) {
ErrorF("glamor_egl_get_display() failed\n");
goto error;
}
if (!eglInitialize(xwl_screen->egl_display, &major, &minor)) {
ErrorF("eglInitialize() failed\n");
goto error;
}
if (!xwl_glamor_try_big_gl_api(xwl_screen) &&
!xwl_glamor_try_gles_api(xwl_screen)) {
ErrorF("Cannot use neither GL nor GLES2\n");
goto error;
}
renderer = glGetString(GL_RENDERER);
if (!renderer) {
ErrorF("glGetString() returned NULL, your GL is broken\n");
goto error;
}
if (strstr((const char *)renderer, "softpipe")) {
ErrorF("Refusing to try glamor on softpipe\n");
goto error;
}
if (!strncmp("llvmpipe", (const char *)renderer, strlen("llvmpipe"))) {
ErrorF("Refusing to try glamor on llvmpipe\n");
goto error;
}
if (!epoxy_has_gl_extension("GL_OES_EGL_image")) {
ErrorF("GL_OES_EGL_image not available\n");
goto error;
}
if (epoxy_has_egl_extension(xwl_screen->egl_display,
"EXT_image_dma_buf_import") &&
epoxy_has_egl_extension(xwl_screen->egl_display,
"EXT_image_dma_buf_import_modifiers"))
xwl_gbm->dmabuf_capable = TRUE;
gbm_backend_name = gbm_device_get_backend_name(xwl_gbm->gbm);
/* Mesa uses "drm" as backend name, in that case, just do nothing */
if (gbm_backend_name && strcmp(gbm_backend_name, "drm") != 0)
xwl_screen->glvnd_vendor = gbm_backend_name;
xwl_gbm->glamor_gles = !epoxy_is_desktop_gl();
return TRUE;
error:
if (xwl_screen->egl_display != EGL_NO_DISPLAY) {
xwl_glamor_maybe_destroy_context(xwl_screen);
eglTerminate(xwl_screen->egl_display);
xwl_screen->egl_display = EGL_NO_DISPLAY;
}
xwl_glamor_gbm_cleanup(xwl_screen);
return FALSE;
}
static Bool
xwl_glamor_gbm_init_screen(struct xwl_screen *xwl_screen)
{
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
if (!dri3_screen_init(xwl_screen->screen, &xwl_dri3_info)) {
ErrorF("Failed to initialize dri3\n");
goto error;
}
if (xwl_gbm->fd_render_node)
goto skip_drm_auth;
if (!dixRegisterPrivateKey(&xwl_auth_state_private_key, PRIVATE_CLIENT,
0)) {
ErrorF("Failed to register private key\n");
goto error;
}
if (!AddCallback(&ClientStateCallback, xwl_auth_state_client_callback,
NULL)) {
ErrorF("Failed to add client state callback\n");
goto error;
}
skip_drm_auth:
xwl_screen->screen->CreatePixmap = xwl_glamor_gbm_create_pixmap;
xwl_screen->screen->DestroyPixmap = xwl_glamor_gbm_destroy_pixmap;
return TRUE;
error:
xwl_glamor_gbm_cleanup(xwl_screen);
return FALSE;
}
static drmDevice *xwl_gbm_get_main_device(struct xwl_screen *xwl_screen)
{
struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
return xwl_gbm->device;
}
void
xwl_glamor_init_gbm(struct xwl_screen *xwl_screen)
{
struct xwl_gbm_private *xwl_gbm;
xwl_screen->gbm_backend.is_available = FALSE;
if (!xwl_glamor_gbm_has_egl_extension())
return;
if (!dixRegisterPrivateKey(&xwl_gbm_private_key, PRIVATE_SCREEN, 0))
return;
xwl_gbm = calloc(sizeof(*xwl_gbm), 1);
if (!xwl_gbm) {
ErrorF("glamor: Not enough memory to setup GBM, disabling\n");
return;
}
dixSetPrivate(&xwl_screen->screen->devPrivates, &xwl_gbm_private_key,
xwl_gbm);
xwl_screen->gbm_backend.init_wl_registry = xwl_glamor_gbm_init_wl_registry;
xwl_screen->gbm_backend.has_wl_interfaces = xwl_glamor_gbm_has_wl_interfaces;
xwl_screen->gbm_backend.init_egl = xwl_glamor_gbm_init_egl;
xwl_screen->gbm_backend.init_screen = xwl_glamor_gbm_init_screen;
xwl_screen->gbm_backend.get_wl_buffer_for_pixmap = xwl_glamor_gbm_get_wl_buffer_for_pixmap;
xwl_screen->gbm_backend.check_flip = NULL;
xwl_screen->gbm_backend.get_main_device = xwl_gbm_get_main_device;
xwl_screen->gbm_backend.is_available = TRUE;
xwl_screen->gbm_backend.backend_flags = XWL_EGL_BACKEND_NEEDS_BUFFER_FLUSH |
XWL_EGL_BACKEND_NEEDS_N_BUFFERING;
xwl_screen->gbm_backend.create_pixmap_for_window = xwl_glamor_gbm_create_pixmap_for_window;
}
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