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2731f0cda4
mutter/src/wayland/meta-wayland-buffer.c
Jonas Ådahl 2731f0cda4 wayland: Setup and use ownership chains 
As elsewhere, make sure objects that need to have a ownership up to the
context, and use this ownership chain to find relevant components, such
as the backend or the Wayland compositor object instance.

wayland/data-device: Hook up data devices to seats

They are tied to a seat - make that connection in struct fields too, so
that related objects can get to the context via it.

wayland: Don't get Wayland compositor via singleton getter

This means via the ownership chain or equivalent.

xwayland: Hook up manager to Wayland compositor

Same applies to the drag-n-drop struct.

xwayland: Make X11 event handling compositor instance aware

This avoids finding it via singletons in the callee.

xwayland: Don't get Wayland compositor from singleton

xwayland: Pass manager when handling dnd event

window/xwayland: Don't get Wayland compositor from singleton

xwayland/grab-keyboard: Don't get backend from singleton

xwayland: Don't get backend from singleton

wayland: Always get the backend from the context

This means traveling up the ownership chain or equivalent when
necessary.

wayland: Hook up data devices, offers and sources to the compositor

This allows tying them to a context without going through any
singletons.

wayland: Don't get display from singleton

xwayland: Don't get display from singleton

tablet: Don't get display from singleton

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2718>
2022-12-17 15:13:48 +01:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2014 Endless Mobile
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Written by:
* Jasper St. Pierre <jstpierre@mecheye.net>
*/
/**
* SECTION:meta-wayland-buffer
* @title: MetaWaylandBuffer
* @short_description: A wrapper for wayland buffers
*
* #MetaWaylandBuffer is a general wrapper around wl_buffer, the basic way of
* passing rendered data from Wayland clients to the compositor. Note that a
* buffer can be backed by several types of memory, as specified by
* #MetaWaylandBufferType.
*/
/**
* MetaWaylandBufferType:
* @META_WAYLAND_BUFFER_TYPE_UNKNOWN: Unknown type.
* @META_WAYLAND_BUFFER_TYPE_SHM: wl_buffer backed by shared memory
* @META_WAYLAND_BUFFER_TYPE_EGL_IMAGE: wl_buffer backed by an EGLImage
* @META_WAYLAND_BUFFER_TYPE_EGL_STREAM: wl_buffer backed by an EGLStream (NVIDIA-specific)
* @META_WAYLAND_BUFFER_TYPE_DMA_BUF: wl_buffer backed by a Linux DMA-BUF
*
* Specifies the backing memory for a #MetaWaylandBuffer. Depending on the type
* of buffer, this will lead to different handling for the compositor. For
* example, a shared-memory buffer will still need to be uploaded to the GPU.
*/
#include "config.h"
#include "wayland/meta-wayland-buffer.h"
#include <drm_fourcc.h>
#include "backends/meta-backend-private.h"
#include "clutter/clutter.h"
#include "cogl/cogl-egl.h"
#include "meta/util.h"
#include "wayland/meta-wayland-dma-buf.h"
#include "wayland/meta-wayland-private.h"
#ifdef HAVE_NATIVE_BACKEND
#include "backends/native/meta-drm-buffer-gbm.h"
#include "backends/native/meta-kms-utils.h"
#include "backends/native/meta-onscreen-native.h"
#include "backends/native/meta-renderer-native.h"
#endif
#ifndef DRM_FORMAT_MOD_INVALID
#define DRM_FORMAT_MOD_INVALID ((1ULL << 56) - 1)
#endif
enum
{
RESOURCE_DESTROYED,
LAST_SIGNAL
};
guint signals[LAST_SIGNAL];
G_DEFINE_TYPE (MetaWaylandBuffer, meta_wayland_buffer, G_TYPE_OBJECT);
static void
meta_wayland_buffer_destroy_handler (struct wl_listener *listener,
void *data)
{
MetaWaylandBuffer *buffer =
wl_container_of (listener, buffer, destroy_listener);
buffer->resource = NULL;
wl_list_remove (&buffer->destroy_listener.link);
g_signal_emit (buffer, signals[RESOURCE_DESTROYED], 0);
g_object_unref (buffer);
}
MetaWaylandBuffer *
meta_wayland_buffer_from_resource (MetaWaylandCompositor *compositor,
struct wl_resource *resource)
{
MetaWaylandBuffer *buffer;
struct wl_listener *listener;
listener =
wl_resource_get_destroy_listener (resource,
meta_wayland_buffer_destroy_handler);
if (listener)
{
buffer = wl_container_of (listener, buffer, destroy_listener);
}
else
{
buffer = g_object_new (META_TYPE_WAYLAND_BUFFER, NULL);
buffer->resource = resource;
buffer->compositor = compositor;
buffer->destroy_listener.notify = meta_wayland_buffer_destroy_handler;
wl_resource_add_destroy_listener (resource, &buffer->destroy_listener);
}
return buffer;
}
struct wl_resource *
meta_wayland_buffer_get_resource (MetaWaylandBuffer *buffer)
{
return buffer->resource;
}
gboolean
meta_wayland_buffer_is_realized (MetaWaylandBuffer *buffer)
{
return buffer->type != META_WAYLAND_BUFFER_TYPE_UNKNOWN;
}
gboolean
meta_wayland_buffer_realize (MetaWaylandBuffer *buffer)
{
#ifdef HAVE_WAYLAND_EGLSTREAM
MetaWaylandEglStream *stream;
#endif
MetaWaylandDmaBufBuffer *dma_buf;
MetaWaylandSinglePixelBuffer *single_pixel_buffer;
if (wl_shm_buffer_get (buffer->resource) != NULL)
{
buffer->type = META_WAYLAND_BUFFER_TYPE_SHM;
return TRUE;
}
#ifdef HAVE_WAYLAND_EGLSTREAM
stream = meta_wayland_egl_stream_new (buffer, NULL);
if (stream)
{
CoglTexture2D *texture;
texture = meta_wayland_egl_stream_create_texture (stream, NULL);
if (!texture)
return FALSE;
buffer->egl_stream.stream = stream;
buffer->type = META_WAYLAND_BUFFER_TYPE_EGL_STREAM;
buffer->egl_stream.texture = COGL_TEXTURE (texture);
buffer->is_y_inverted = meta_wayland_egl_stream_is_y_inverted (stream);
return TRUE;
}
#endif /* HAVE_WAYLAND_EGLSTREAM */
if (meta_wayland_compositor_is_egl_display_bound (buffer->compositor))
{
MetaContext *context =
meta_wayland_compositor_get_context (buffer->compositor);
MetaBackend *backend = meta_context_get_backend (context);
EGLint format;
MetaEgl *egl = meta_backend_get_egl (backend);
ClutterBackend *clutter_backend =
meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context =
clutter_backend_get_cogl_context (clutter_backend);
EGLDisplay egl_display = cogl_egl_context_get_egl_display (cogl_context);
if (meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_TEXTURE_FORMAT, &format,
NULL))
{
buffer->type = META_WAYLAND_BUFFER_TYPE_EGL_IMAGE;
buffer->dma_buf.dma_buf =
meta_wayland_dma_buf_fds_for_wayland_buffer (buffer);
return TRUE;
}
}
dma_buf = meta_wayland_dma_buf_from_buffer (buffer);
if (dma_buf)
{
buffer->dma_buf.dma_buf = dma_buf;
buffer->type = META_WAYLAND_BUFFER_TYPE_DMA_BUF;
return TRUE;
}
single_pixel_buffer = meta_wayland_single_pixel_buffer_from_buffer (buffer);
if (single_pixel_buffer)
{
buffer->single_pixel.single_pixel_buffer = single_pixel_buffer;
buffer->type = META_WAYLAND_BUFFER_TYPE_SINGLE_PIXEL;
return TRUE;
}
return FALSE;
}
static gboolean
shm_format_to_cogl_pixel_format (enum wl_shm_format shm_format,
CoglPixelFormat *format_out,
CoglTextureComponents *components_out)
{
CoglPixelFormat format;
CoglTextureComponents components = COGL_TEXTURE_COMPONENTS_RGBA;
switch (shm_format)
{
#if G_BYTE_ORDER == G_BIG_ENDIAN
case WL_SHM_FORMAT_ARGB8888:
format = COGL_PIXEL_FORMAT_ARGB_8888_PRE;
break;
case WL_SHM_FORMAT_XRGB8888:
format = COGL_PIXEL_FORMAT_ARGB_8888;
components = COGL_TEXTURE_COMPONENTS_RGB;
break;
case WL_SHM_FORMAT_XBGR8888:
components = COGL_TEXTURE_COMPONENTS_RGB;
G_GNUC_FALLTHROUGH;
case WL_SHM_FORMAT_ABGR8888:
format = COGL_PIXEL_FORMAT_ABGR_8888_PRE;
break;
#elif G_BYTE_ORDER == G_LITTLE_ENDIAN
case WL_SHM_FORMAT_RGB565:
format = COGL_PIXEL_FORMAT_RGB_565;
components = COGL_TEXTURE_COMPONENTS_RGB;
break;
case WL_SHM_FORMAT_ARGB8888:
format = COGL_PIXEL_FORMAT_BGRA_8888_PRE;
break;
case WL_SHM_FORMAT_XRGB8888:
format = COGL_PIXEL_FORMAT_BGRA_8888;
components = COGL_TEXTURE_COMPONENTS_RGB;
break;
case WL_SHM_FORMAT_XBGR8888:
components = COGL_TEXTURE_COMPONENTS_RGB;
G_GNUC_FALLTHROUGH;
case WL_SHM_FORMAT_ABGR8888:
format = COGL_PIXEL_FORMAT_RGBA_8888_PRE;
break;
case WL_SHM_FORMAT_XRGB2101010:
components = COGL_TEXTURE_COMPONENTS_RGB;
G_GNUC_FALLTHROUGH;
case WL_SHM_FORMAT_ARGB2101010:
format = COGL_PIXEL_FORMAT_ARGB_2101010_PRE;
break;
case WL_SHM_FORMAT_XBGR2101010:
components = COGL_TEXTURE_COMPONENTS_RGB;
G_GNUC_FALLTHROUGH;
case WL_SHM_FORMAT_ABGR2101010:
format = COGL_PIXEL_FORMAT_ABGR_2101010_PRE;
break;
case WL_SHM_FORMAT_XRGB16161616F:
components = COGL_TEXTURE_COMPONENTS_RGB;
G_GNUC_FALLTHROUGH;
case WL_SHM_FORMAT_ARGB16161616F:
format = COGL_PIXEL_FORMAT_BGRA_FP_16161616_PRE;
break;
case WL_SHM_FORMAT_XBGR16161616F:
components = COGL_TEXTURE_COMPONENTS_RGB;
G_GNUC_FALLTHROUGH;
case WL_SHM_FORMAT_ABGR16161616F:
format = COGL_PIXEL_FORMAT_RGBA_FP_16161616_PRE;
break;
#endif
default:
return FALSE;
}
if (format_out)
*format_out = format;
if (components_out)
*components_out = components;
return TRUE;
}
static gboolean
shm_buffer_get_cogl_pixel_format (MetaWaylandBuffer *buffer,
struct wl_shm_buffer *shm_buffer,
CoglPixelFormat *format_out,
CoglTextureComponents *components_out)
{
MetaContext *context =
meta_wayland_compositor_get_context (buffer->compositor);
MetaBackend *backend = meta_context_get_backend (context);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context =
clutter_backend_get_cogl_context (clutter_backend);
CoglPixelFormat cogl_format;
CoglTextureComponents cogl_components;
if (!shm_format_to_cogl_pixel_format (wl_shm_buffer_get_format (shm_buffer),
&cogl_format,
&cogl_components))
return FALSE;
if (!cogl_context_format_supports_upload (cogl_context, cogl_format))
return FALSE;
if (format_out)
*format_out = cogl_format;
if (components_out)
*components_out = cogl_components;
return TRUE;
}
static const char *
shm_format_to_string (MetaDrmFormatBuf *format_buf,
uint32_t shm_format)
{
const char *result;
switch (shm_format)
{
case WL_SHM_FORMAT_ARGB8888:
result = "ARGB8888";
break;
case WL_SHM_FORMAT_XRGB8888:
result = "XRGB8888";
break;
default:
result = meta_drm_format_to_string (format_buf, shm_format);
break;
}
return result;
}
static gboolean
shm_buffer_attach (MetaWaylandBuffer *buffer,
CoglTexture **texture,
GError **error)
{
MetaContext *context =
meta_wayland_compositor_get_context (buffer->compositor);
MetaBackend *backend = meta_context_get_backend (context);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend);
struct wl_shm_buffer *shm_buffer;
int stride, width, height;
CoglPixelFormat format;
CoglTextureComponents components;
CoglBitmap *bitmap;
CoglTexture *new_texture;
MetaDrmFormatBuf format_buf;
shm_buffer = wl_shm_buffer_get (buffer->resource);
stride = wl_shm_buffer_get_stride (shm_buffer);
width = wl_shm_buffer_get_width (shm_buffer);
height = wl_shm_buffer_get_height (shm_buffer);
if (!shm_buffer_get_cogl_pixel_format (buffer, shm_buffer,
&format, &components))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Invalid shm pixel format");
return FALSE;
}
meta_topic (META_DEBUG_WAYLAND,
"[wl-shm] wl_buffer@%u wl_shm_format %s -> CoglPixelFormat %s",
wl_resource_get_id (meta_wayland_buffer_get_resource (buffer)),
shm_format_to_string (&format_buf,
wl_shm_buffer_get_format (shm_buffer)),
cogl_pixel_format_to_string (format));
if (*texture &&
cogl_texture_get_width (*texture) == width &&
cogl_texture_get_height (*texture) == height &&
cogl_texture_get_components (*texture) == components &&
_cogl_texture_get_format (*texture) == format)
{
buffer->is_y_inverted = TRUE;
return TRUE;
}
cogl_clear_object (texture);
wl_shm_buffer_begin_access (shm_buffer);
bitmap = cogl_bitmap_new_for_data (cogl_context,
width, height,
format,
stride,
wl_shm_buffer_get_data (shm_buffer));
new_texture = COGL_TEXTURE (cogl_texture_2d_new_from_bitmap (bitmap));
cogl_texture_set_components (new_texture, components);
if (!cogl_texture_allocate (new_texture, error))
{
g_clear_pointer (&new_texture, cogl_object_unref);
if (g_error_matches (*error, COGL_TEXTURE_ERROR, COGL_TEXTURE_ERROR_SIZE))
{
CoglTexture2DSliced *texture_sliced;
g_clear_error (error);
texture_sliced =
cogl_texture_2d_sliced_new_from_bitmap (bitmap,
COGL_TEXTURE_MAX_WASTE);
new_texture = COGL_TEXTURE (texture_sliced);
cogl_texture_set_components (new_texture, components);
if (!cogl_texture_allocate (new_texture, error))
g_clear_pointer (&new_texture, cogl_object_unref);
}
}
cogl_object_unref (bitmap);
wl_shm_buffer_end_access (shm_buffer);
if (!new_texture)
return FALSE;
*texture = new_texture;
buffer->is_y_inverted = TRUE;
return TRUE;
}
static gboolean
egl_image_buffer_attach (MetaWaylandBuffer *buffer,
CoglTexture **texture,
GError **error)
{
MetaContext *context =
meta_wayland_compositor_get_context (buffer->compositor);
MetaBackend *backend = meta_context_get_backend (context);
MetaEgl *egl = meta_backend_get_egl (backend);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend);
EGLDisplay egl_display = cogl_egl_context_get_egl_display (cogl_context);
int format, width, height, y_inverted;
CoglPixelFormat cogl_format;
EGLImageKHR egl_image;
CoglEglImageFlags flags;
CoglTexture2D *texture_2d;
if (buffer->egl_image.texture)
{
cogl_clear_object (texture);
*texture = cogl_object_ref (buffer->egl_image.texture);
return TRUE;
}
if (!meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_TEXTURE_FORMAT, &format,
error))
return FALSE;
if (!meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_WIDTH, &width,
error))
return FALSE;
if (!meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_HEIGHT, &height,
error))
return FALSE;
if (!meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_WAYLAND_Y_INVERTED_WL, &y_inverted,
NULL))
y_inverted = EGL_TRUE;
switch (format)
{
case EGL_TEXTURE_RGB:
cogl_format = COGL_PIXEL_FORMAT_RGB_888;
break;
case EGL_TEXTURE_RGBA:
cogl_format = COGL_PIXEL_FORMAT_RGBA_8888_PRE;
break;
default:
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_FAILED,
"Unsupported buffer format %d", format);
return FALSE;
}
/* The WL_bind_wayland_display spec states that EGL_NO_CONTEXT is to be used
* in conjunction with the EGL_WAYLAND_BUFFER_WL target. */
egl_image = meta_egl_create_image (egl, egl_display, EGL_NO_CONTEXT,
EGL_WAYLAND_BUFFER_WL, buffer->resource,
NULL,
error);
if (egl_image == EGL_NO_IMAGE_KHR)
return FALSE;
flags = COGL_EGL_IMAGE_FLAG_NONE;
texture_2d = cogl_egl_texture_2d_new_from_image (cogl_context,
width, height,
cogl_format,
egl_image,
flags,
error);
meta_egl_destroy_image (egl, egl_display, egl_image, NULL);
if (!texture_2d)
return FALSE;
buffer->egl_image.texture = COGL_TEXTURE (texture_2d);
buffer->is_y_inverted = !!y_inverted;
cogl_clear_object (texture);
*texture = cogl_object_ref (buffer->egl_image.texture);
return TRUE;
}
#ifdef HAVE_WAYLAND_EGLSTREAM
static gboolean
egl_stream_buffer_attach (MetaWaylandBuffer *buffer,
CoglTexture **texture,
GError **error)
{
MetaWaylandEglStream *stream = buffer->egl_stream.stream;
g_assert (stream);
if (!meta_wayland_egl_stream_attach (stream, error))
return FALSE;
cogl_clear_object (texture);
*texture = cogl_object_ref (buffer->egl_stream.texture);
return TRUE;
}
#endif /* HAVE_WAYLAND_EGLSTREAM */
/**
* meta_wayland_buffer_attach:
* @buffer: a pointer to a #MetaWaylandBuffer
* @texture: (inout) (transfer full): a #CoglTexture representing the surface
* content
* @error: return location for error or %NULL
*
* This function should be passed a pointer to the texture used to draw the
* surface content. The texture will either be replaced by a new texture, or
* stay the same, in which case, it may later be updated with new content when
* processing damage. The new texture might be newly created, or it may be a
* reference to an already existing one.
*
* If replaced, the old texture will have its reference count decreased by one,
* potentially freeing it. When a new texture is set, the caller (i.e. the
* surface) will be the owner of one reference count. It must free it, either
* using g_object_unref() or have it updated again using
* meta_wayland_buffer_attach(), which also might free it, as described above.
*/
gboolean
meta_wayland_buffer_attach (MetaWaylandBuffer *buffer,
CoglTexture **texture,
GError **error)
{
COGL_TRACE_BEGIN_SCOPED (MetaWaylandBufferAttach, "WaylandBuffer (attach)");
if (!meta_wayland_buffer_is_realized (buffer))
{
/* The buffer should have been realized at surface commit time */
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_FAILED,
"Unknown buffer type");
return FALSE;
}
switch (buffer->type)
{
case META_WAYLAND_BUFFER_TYPE_SHM:
return shm_buffer_attach (buffer, texture, error);
case META_WAYLAND_BUFFER_TYPE_EGL_IMAGE:
return egl_image_buffer_attach (buffer, texture, error);
#ifdef HAVE_WAYLAND_EGLSTREAM
case META_WAYLAND_BUFFER_TYPE_EGL_STREAM:
return egl_stream_buffer_attach (buffer, texture, error);
#endif
case META_WAYLAND_BUFFER_TYPE_DMA_BUF:
return meta_wayland_dma_buf_buffer_attach (buffer,
texture,
error);
case META_WAYLAND_BUFFER_TYPE_SINGLE_PIXEL:
return meta_wayland_single_pixel_buffer_attach (buffer,
texture,
error);
case META_WAYLAND_BUFFER_TYPE_UNKNOWN:
g_assert_not_reached ();
return FALSE;
}
g_assert_not_reached ();
return FALSE;
}
/**
* meta_wayland_buffer_create_snippet:
* @buffer: A #MetaWaylandBuffer object
*
* If needed, this method creates a #CoglSnippet to make sure the buffer can be
* dealt with appropriately in a #CoglPipeline that renders it.
*
* Returns: (transfer full) (nullable): A new #CoglSnippet, or %NULL.
*/
CoglSnippet *
meta_wayland_buffer_create_snippet (MetaWaylandBuffer *buffer)
{
#ifdef HAVE_WAYLAND_EGLSTREAM
if (!buffer->egl_stream.stream)
return NULL;
return meta_wayland_egl_stream_create_snippet (buffer->egl_stream.stream);
#else
return NULL;
#endif /* HAVE_WAYLAND_EGLSTREAM */
}
void
meta_wayland_buffer_inc_use_count (MetaWaylandBuffer *buffer)
{
g_warn_if_fail (buffer->resource);
buffer->use_count++;
}
void
meta_wayland_buffer_dec_use_count (MetaWaylandBuffer *buffer)
{
g_return_if_fail (buffer->use_count > 0);
buffer->use_count--;
if (buffer->use_count == 0 && buffer->resource)
wl_buffer_send_release (buffer->resource);
}
gboolean
meta_wayland_buffer_is_y_inverted (MetaWaylandBuffer *buffer)
{
return buffer->is_y_inverted;
}
static gboolean
process_shm_buffer_damage (MetaWaylandBuffer *buffer,
CoglTexture *texture,
cairo_region_t *region,
GError **error)
{
struct wl_shm_buffer *shm_buffer;
int i, n_rectangles;
gboolean set_texture_failed = FALSE;
CoglPixelFormat format;
n_rectangles = cairo_region_num_rectangles (region);
shm_buffer = wl_shm_buffer_get (buffer->resource);
shm_buffer_get_cogl_pixel_format (buffer, shm_buffer, &format, NULL);
g_return_val_if_fail (cogl_pixel_format_get_n_planes (format) == 1, FALSE);
wl_shm_buffer_begin_access (shm_buffer);
for (i = 0; i < n_rectangles; i++)
{
const uint8_t *data = wl_shm_buffer_get_data (shm_buffer);
int32_t stride = wl_shm_buffer_get_stride (shm_buffer);
cairo_rectangle_int_t rect;
int bpp;
bpp = cogl_pixel_format_get_bytes_per_pixel (format, 0);
cairo_region_get_rectangle (region, i, &rect);
if (!_cogl_texture_set_region (texture,
rect.width, rect.height,
format,
stride,
data + rect.x * bpp + rect.y * stride,
rect.x, rect.y,
0,
error))
{
set_texture_failed = TRUE;
break;
}
}
wl_shm_buffer_end_access (shm_buffer);
return !set_texture_failed;
}
void
meta_wayland_buffer_process_damage (MetaWaylandBuffer *buffer,
CoglTexture *texture,
cairo_region_t *region)
{
gboolean res = FALSE;
GError *error = NULL;
g_return_if_fail (buffer->resource);
switch (buffer->type)
{
case META_WAYLAND_BUFFER_TYPE_SHM:
res = process_shm_buffer_damage (buffer, texture, region, &error);
break;
case META_WAYLAND_BUFFER_TYPE_EGL_IMAGE:
#ifdef HAVE_WAYLAND_EGLSTREAM
case META_WAYLAND_BUFFER_TYPE_EGL_STREAM:
#endif
case META_WAYLAND_BUFFER_TYPE_DMA_BUF:
case META_WAYLAND_BUFFER_TYPE_SINGLE_PIXEL:
res = TRUE;
break;
case META_WAYLAND_BUFFER_TYPE_UNKNOWN:
g_set_error (&error, G_IO_ERROR,
G_IO_ERROR_FAILED,
"Unknown buffer type");
res = FALSE;
break;
}
if (!res)
{
g_warning ("Failed to process Wayland buffer damage: %s", error->message);
g_error_free (error);
}
}
static CoglScanout *
try_acquire_egl_image_scanout (MetaWaylandBuffer *buffer,
CoglOnscreen *onscreen)
{
#ifdef HAVE_NATIVE_BACKEND
MetaContext *context =
meta_wayland_compositor_get_context (buffer->compositor);
MetaBackend *backend = meta_context_get_backend (context);
MetaRenderer *renderer = meta_backend_get_renderer (backend);
MetaRendererNative *renderer_native = META_RENDERER_NATIVE (renderer);
MetaGpuKms *gpu_kms;
MetaDeviceFile *device_file;
struct gbm_device *gbm_device;
struct gbm_bo *gbm_bo;
MetaDrmBufferFlags flags;
g_autoptr (MetaDrmBufferGbm) fb = NULL;
g_autoptr (GError) error = NULL;
gpu_kms = meta_renderer_native_get_primary_gpu (renderer_native);
device_file = meta_renderer_native_get_primary_device_file (renderer_native);
gbm_device = meta_gbm_device_from_gpu (gpu_kms);
gbm_bo = gbm_bo_import (gbm_device,
GBM_BO_IMPORT_WL_BUFFER, buffer->resource,
GBM_BO_USE_SCANOUT);
if (!gbm_bo)
return NULL;
flags = META_DRM_BUFFER_FLAG_NONE;
if (gbm_bo_get_modifier (gbm_bo) == DRM_FORMAT_MOD_INVALID)
flags |= META_DRM_BUFFER_FLAG_DISABLE_MODIFIERS;
fb = meta_drm_buffer_gbm_new_take (device_file, gbm_bo, flags, &error);
if (!fb)
{
g_debug ("Failed to create scanout buffer: %s", error->message);
gbm_bo_destroy (gbm_bo);
return NULL;
}
if (!meta_onscreen_native_is_buffer_scanout_compatible (onscreen,
META_DRM_BUFFER (fb)))
return NULL;
return COGL_SCANOUT (g_steal_pointer (&fb));
#else
return NULL;
#endif
}
CoglScanout *
meta_wayland_buffer_try_acquire_scanout (MetaWaylandBuffer *buffer,
CoglOnscreen *onscreen)
{
COGL_TRACE_BEGIN_SCOPED (MetaWaylandBufferTryScanout,
"WaylandBuffer (try scanout)");
switch (buffer->type)
{
case META_WAYLAND_BUFFER_TYPE_SHM:
case META_WAYLAND_BUFFER_TYPE_SINGLE_PIXEL:
meta_topic (META_DEBUG_RENDER,
"Buffer type not scanout compatible");
return NULL;
case META_WAYLAND_BUFFER_TYPE_EGL_IMAGE:
return try_acquire_egl_image_scanout (buffer, onscreen);
#ifdef HAVE_WAYLAND_EGLSTREAM
case META_WAYLAND_BUFFER_TYPE_EGL_STREAM:
meta_topic (META_DEBUG_RENDER,
"Buffer type not scanout compatible");
return NULL;
#endif
case META_WAYLAND_BUFFER_TYPE_DMA_BUF:
{
MetaWaylandDmaBufBuffer *dma_buf;
dma_buf = meta_wayland_dma_buf_from_buffer (buffer);
if (!dma_buf)
return NULL;
return meta_wayland_dma_buf_try_acquire_scanout (dma_buf, onscreen);
}
case META_WAYLAND_BUFFER_TYPE_UNKNOWN:
g_warn_if_reached ();
return NULL;
}
g_assert_not_reached ();
return NULL;
}
static void
meta_wayland_buffer_finalize (GObject *object)
{
MetaWaylandBuffer *buffer = META_WAYLAND_BUFFER (object);
g_warn_if_fail (buffer->use_count == 0);
g_clear_pointer (&buffer->egl_image.texture, cogl_object_unref);
#ifdef HAVE_WAYLAND_EGLSTREAM
g_clear_pointer (&buffer->egl_stream.texture, cogl_object_unref);
g_clear_object (&buffer->egl_stream.stream);
#endif
g_clear_pointer (&buffer->dma_buf.texture, cogl_object_unref);
g_clear_object (&buffer->dma_buf.dma_buf);
g_clear_pointer (&buffer->single_pixel.single_pixel_buffer,
meta_wayland_single_pixel_buffer_free);
cogl_clear_object (&buffer->single_pixel.texture);
G_OBJECT_CLASS (meta_wayland_buffer_parent_class)->finalize (object);
}
static void
meta_wayland_buffer_init (MetaWaylandBuffer *buffer)
{
}
static void
meta_wayland_buffer_class_init (MetaWaylandBufferClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_wayland_buffer_finalize;
/**
* MetaWaylandBuffer::resource-destroyed:
*
* Called when the underlying wl_resource was destroyed.
*/
signals[RESOURCE_DESTROYED] = g_signal_new ("resource-destroyed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
}
void
meta_wayland_init_shm (MetaWaylandCompositor *compositor)
{
MetaContext *context = meta_wayland_compositor_get_context (compositor);
MetaBackend *backend = meta_context_get_backend (context);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context =
clutter_backend_get_cogl_context (clutter_backend);
static const enum wl_shm_format shm_formats[] = {
WL_SHM_FORMAT_ABGR8888,
WL_SHM_FORMAT_XBGR8888,
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
WL_SHM_FORMAT_RGB565,
WL_SHM_FORMAT_ARGB2101010,
WL_SHM_FORMAT_XRGB2101010,
WL_SHM_FORMAT_ABGR2101010,
WL_SHM_FORMAT_XBGR2101010,
WL_SHM_FORMAT_ARGB16161616F,
WL_SHM_FORMAT_XRGB16161616F,
WL_SHM_FORMAT_ABGR16161616F,
WL_SHM_FORMAT_XBGR16161616F,
#endif
};
int i;
wl_display_init_shm (compositor->wayland_display);
for (i = 0; i < G_N_ELEMENTS (shm_formats); i++)
{
CoglPixelFormat cogl_format;
if (!shm_format_to_cogl_pixel_format (shm_formats[i],
&cogl_format,
NULL))
continue;
if (!cogl_context_format_supports_upload (cogl_context, cogl_format))
continue;
wl_display_add_shm_format (compositor->wayland_display, shm_formats[i]);
}
}
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