d7185a84b6
To be able to check for availability of the Wayland interfaces required to run a given EGL backend (either GBM or EGLStream for now), we need to have each backend structures and vfuncs in place before we enter the Wayland registry dance. That basically means that we should init all backends at first, connect to the Wayland compositor and query the available interfaces and then decide which backend is available and should be used (or none if either the Wayland interfaces or the EGL extensions are not available). For this purpose, hold an egl_backend struct for each backend we are to consider prior to connect to the Wayland display so that, when we get to query the Wayland interfaces, everything is in place for each backend to handle the various Wayland interfaces. Eventually, when we need to chose which EGL backend to use for glamor, the available Wayland interfaces and EGL extensions available are all known to Xwayland. Signed-off-by: Olivier Fourdan <ofourdan@redhat.com> Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
275 lines
8.9 KiB
C
275 lines
8.9 KiB
C
/*
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* Copyright © 2011-2014 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of the
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* copyright holders not be used in advertising or publicity
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* pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#include "xwayland.h"
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#define MESA_EGL_NO_X11_HEADERS
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#include <glamor_egl.h>
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#include <glamor.h>
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#include <glamor_context.h>
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static void
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glamor_egl_make_current(struct glamor_context *glamor_ctx)
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{
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eglMakeCurrent(glamor_ctx->display, EGL_NO_SURFACE,
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EGL_NO_SURFACE, EGL_NO_CONTEXT);
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if (!eglMakeCurrent(glamor_ctx->display,
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EGL_NO_SURFACE, EGL_NO_SURFACE,
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glamor_ctx->ctx))
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FatalError("Failed to make EGL context current\n");
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}
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void
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xwl_glamor_egl_make_current(struct xwl_screen *xwl_screen)
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{
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if (lastGLContext == xwl_screen->glamor_ctx)
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return;
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lastGLContext = xwl_screen->glamor_ctx;
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xwl_screen->glamor_ctx->make_current(xwl_screen->glamor_ctx);
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}
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void
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glamor_egl_screen_init(ScreenPtr screen, struct glamor_context *glamor_ctx)
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{
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struct xwl_screen *xwl_screen = xwl_screen_get(screen);
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glamor_ctx->ctx = xwl_screen->egl_context;
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glamor_ctx->display = xwl_screen->egl_display;
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glamor_ctx->make_current = glamor_egl_make_current;
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xwl_screen->glamor_ctx = glamor_ctx;
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}
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void
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xwl_glamor_init_wl_registry(struct xwl_screen *xwl_screen,
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struct wl_registry *registry,
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uint32_t id, const char *interface,
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uint32_t version)
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{
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if (xwl_screen->gbm_backend.is_available &&
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xwl_screen->gbm_backend.init_wl_registry &&
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xwl_screen->gbm_backend.init_wl_registry(xwl_screen,
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registry,
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id,
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interface,
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version)); /* no-op */
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else if (xwl_screen->eglstream_backend.is_available &&
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xwl_screen->eglstream_backend.init_wl_registry &&
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xwl_screen->eglstream_backend.init_wl_registry(xwl_screen,
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registry,
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id,
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interface,
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version)); /* no-op */
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}
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Bool
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xwl_glamor_has_wl_interfaces(struct xwl_screen *xwl_screen,
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struct xwl_egl_backend *xwl_egl_backend)
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{
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if (xwl_egl_backend->has_wl_interfaces)
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return xwl_egl_backend->has_wl_interfaces(xwl_screen);
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/* If the backend has no requirement wrt WL interfaces, we're fine */
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return TRUE;
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}
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struct wl_buffer *
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xwl_glamor_pixmap_get_wl_buffer(PixmapPtr pixmap,
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unsigned short width,
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unsigned short height,
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Bool *created)
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{
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struct xwl_screen *xwl_screen = xwl_screen_get(pixmap->drawable.pScreen);
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if (xwl_screen->egl_backend->get_wl_buffer_for_pixmap)
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return xwl_screen->egl_backend->get_wl_buffer_for_pixmap(pixmap,
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width,
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height,
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created);
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return NULL;
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}
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void
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xwl_glamor_post_damage(struct xwl_window *xwl_window,
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PixmapPtr pixmap, RegionPtr region)
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{
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struct xwl_screen *xwl_screen = xwl_window->xwl_screen;
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if (xwl_screen->egl_backend->post_damage)
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xwl_screen->egl_backend->post_damage(xwl_window, pixmap, region);
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}
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Bool
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xwl_glamor_allow_commits(struct xwl_window *xwl_window)
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{
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struct xwl_screen *xwl_screen = xwl_window->xwl_screen;
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if (xwl_screen->egl_backend->allow_commits)
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return xwl_screen->egl_backend->allow_commits(xwl_window);
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else
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return TRUE;
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}
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static Bool
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xwl_glamor_create_screen_resources(ScreenPtr screen)
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{
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struct xwl_screen *xwl_screen = xwl_screen_get(screen);
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int ret;
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screen->CreateScreenResources = xwl_screen->CreateScreenResources;
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ret = (*screen->CreateScreenResources) (screen);
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xwl_screen->CreateScreenResources = screen->CreateScreenResources;
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screen->CreateScreenResources = xwl_glamor_create_screen_resources;
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if (!ret)
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return ret;
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if (xwl_screen->rootless) {
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screen->devPrivate =
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fbCreatePixmap(screen, 0, 0, screen->rootDepth, 0);
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}
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else {
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screen->devPrivate = screen->CreatePixmap(
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screen, screen->width, screen->height, screen->rootDepth,
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CREATE_PIXMAP_USAGE_BACKING_PIXMAP);
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}
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SetRootClip(screen, xwl_screen->root_clip_mode);
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return screen->devPrivate != NULL;
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}
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int
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glamor_egl_fd_name_from_pixmap(ScreenPtr screen,
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PixmapPtr pixmap,
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CARD16 *stride, CARD32 *size)
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{
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return 0;
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}
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void
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xwl_glamor_init_backends(struct xwl_screen *xwl_screen, Bool use_eglstream)
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{
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#ifdef GLAMOR_HAS_GBM
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xwl_glamor_init_gbm(xwl_screen);
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if (!xwl_screen->gbm_backend.is_available && !use_eglstream)
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ErrorF("xwayland glamor: GBM backend (default) is not available\n");
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#endif
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#ifdef XWL_HAS_EGLSTREAM
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xwl_glamor_init_eglstream(xwl_screen);
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if (!xwl_screen->eglstream_backend.is_available && use_eglstream)
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ErrorF("xwayland glamor: EGLStream backend requested but not available\n");
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#endif
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}
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static Bool
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xwl_glamor_select_gbm_backend(struct xwl_screen *xwl_screen)
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{
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#ifdef GLAMOR_HAS_GBM
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if (xwl_screen->gbm_backend.is_available &&
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xwl_glamor_has_wl_interfaces(xwl_screen, &xwl_screen->gbm_backend)) {
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xwl_screen->egl_backend = &xwl_screen->gbm_backend;
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return TRUE;
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}
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else
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ErrorF("Missing Wayland requirements for glamor GBM backend\n");
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#endif
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return FALSE;
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}
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static Bool
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xwl_glamor_select_eglstream_backend(struct xwl_screen *xwl_screen)
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{
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#ifdef XWL_HAS_EGLSTREAM
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if (xwl_screen->eglstream_backend.is_available &&
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xwl_glamor_has_wl_interfaces(xwl_screen, &xwl_screen->eglstream_backend)) {
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ErrorF("glamor: Using nvidia's EGLStream interface, direct rendering impossible.\n");
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ErrorF("glamor: Performance may be affected. Ask your vendor to support GBM!\n");
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xwl_screen->egl_backend = &xwl_screen->eglstream_backend;
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return TRUE;
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}
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else
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ErrorF("Missing Wayland requirements for glamor EGLStream backend\n");
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#endif
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return FALSE;
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}
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void
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xwl_glamor_select_backend(struct xwl_screen *xwl_screen, Bool use_eglstream)
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{
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if (use_eglstream) {
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if (!xwl_glamor_select_eglstream_backend(xwl_screen))
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xwl_glamor_select_gbm_backend(xwl_screen);
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}
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else {
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if (!xwl_glamor_select_gbm_backend(xwl_screen))
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xwl_glamor_select_eglstream_backend(xwl_screen);
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}
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}
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Bool
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xwl_glamor_init(struct xwl_screen *xwl_screen)
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{
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ScreenPtr screen = xwl_screen->screen;
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const char *no_glamor_env;
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no_glamor_env = getenv("XWAYLAND_NO_GLAMOR");
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if (no_glamor_env && *no_glamor_env != '0') {
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ErrorF("Disabling glamor and dri3 support, XWAYLAND_NO_GLAMOR is set\n");
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return FALSE;
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}
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if (!xwl_screen->egl_backend->init_egl(xwl_screen)) {
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ErrorF("EGL setup failed, disabling glamor\n");
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return FALSE;
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}
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if (!glamor_init(xwl_screen->screen, GLAMOR_USE_EGL_SCREEN)) {
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ErrorF("Failed to initialize glamor\n");
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return FALSE;
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}
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if (!xwl_screen->egl_backend->init_screen(xwl_screen)) {
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ErrorF("EGL backend init_screen() failed, disabling glamor\n");
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return FALSE;
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}
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xwl_screen->CreateScreenResources = screen->CreateScreenResources;
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screen->CreateScreenResources = xwl_glamor_create_screen_resources;
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#ifdef XV
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if (!xwl_glamor_xv_init(screen))
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ErrorF("Failed to initialize glamor Xv extension\n");
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#endif
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return TRUE;
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}
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