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[client] wayland: implement window creation for egl

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This commit implements window creation and resize logic, allowing the desktop
to be drawn.
This commit is contained in:
Quantum 2021-01-26 18:59:10 -05:00 committed by Geoffrey McRae
parent f4c1927f56
commit 9f0b99dac0
8 changed files with 248 additions and 54 deletions
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6
client/displayservers/SDL/sdl.c
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@ -229,6 +229,11 @@ static EGLNativeWindowType sdlGetEGLNativeWindow(void)
return 0;
}
}
static void sdlEGLSwapBuffers(EGLDisplay display, EGLSurface surface)
{
eglSwapBuffers(display, surface);
}
#endif
static void sdlSwapBuffers(void)
@ -470,6 +475,7 @@ struct LG_DisplayServerOps LGDS_SDL =
#ifdef ENABLE_EGL
.getEGLDisplay = sdlGetEGLDisplay,
.getEGLNativeWindow = sdlGetEGLNativeWindow,
.eglSwapBuffers = sdlEGLSwapBuffers,
#endif
.glSwapBuffers = sdlSwapBuffers,

3
client/displayservers/Wayland/CMakeLists.txt
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@ -46,6 +46,9 @@ endmacro()
file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/wayland")
include_directories("${CMAKE_BINARY_DIR}/wayland")
wayland_generate(
"${WAYLAND_PROTOCOLS_BASE}/stable/xdg-shell/xdg-shell.xml"
"${CMAKE_BINARY_DIR}/wayland/wayland-xdg-shell-client-protocol")
wayland_generate(
"${WAYLAND_PROTOCOLS_BASE}/unstable/relative-pointer/relative-pointer-unstable-v1.xml"
"${CMAKE_BINARY_DIR}/wayland/wayland-relative-pointer-unstable-v1-client-protocol")

270
client/displayservers/Wayland/wayland.c
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@ -25,13 +25,21 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include <sys/mman.h>
#include <unistd.h>
#include <linux/input.h>
#include <poll.h>
#include <SDL2/SDL.h>
#include <wayland-client.h>
#ifdef ENABLE_EGL
# include <wayland-egl.h>
# include "egl_dynprocs.h"
# include <EGL/eglext.h>
#endif
#include "app.h"
#include "common/debug.h"
#include "wayland-xdg-shell-client-protocol.h"
#include "wayland-keyboard-shortcuts-inhibit-unstable-v1-client-protocol.h"
#include "wayland-pointer-constraints-unstable-v1-client-protocol.h"
#include "wayland-relative-pointer-unstable-v1-client-protocol.h"
@ -46,6 +54,19 @@ struct WaylandDSState
struct wl_surface * surface;
struct wl_registry * registry;
struct wl_seat * seat;
struct wl_compositor * compositor;
int32_t width, height;
uint32_t resizeSerial;
bool configured;
#ifdef ENABLE_EGL
struct wl_egl_window * eglWindow;
#endif
struct xdg_wm_base * xdgWmBase;
struct xdg_surface * xdgSurface;
struct xdg_toplevel * xdgToplevel;
struct wl_data_device_manager * dataDeviceManager;
struct wl_data_device * dataDevice;
@ -90,6 +111,17 @@ struct WCBState
static struct WaylandDSState wm;
static struct WCBState wcb;
// XDG WM base listeners.
static void xdgWmBasePing(void * data, struct xdg_wm_base * xdgWmBase, uint32_t serial)
{
xdg_wm_base_pong(xdgWmBase, serial);
}
static const struct xdg_wm_base_listener xdgWmBaseListener = {
.ping = xdgWmBasePing,
};
// Registry-handling listeners.
static void registryGlobalHandler(void * data, struct wl_registry * registry,
@ -97,6 +129,10 @@ static void registryGlobalHandler(void * data, struct wl_registry * registry,
{
if (!strcmp(interface, wl_seat_interface.name) && !wm.seat)
wm.seat = wl_registry_bind(wm.registry, name, &wl_seat_interface, 1);
else if (!strcmp(interface, wl_compositor_interface.name))
wm.compositor = wl_registry_bind(wm.registry, name, &wl_compositor_interface, 4);
else if (!strcmp(interface, xdg_wm_base_interface.name))
wm.xdgWmBase = wl_registry_bind(wm.registry, name, &xdg_wm_base_interface, 1);
else if (!strcmp(interface, zwp_relative_pointer_manager_v1_interface.name))
wm.relativePointerManager = wl_registry_bind(wm.registry, name,
&zwp_relative_pointer_manager_v1_interface, 1);
@ -321,19 +357,37 @@ static const struct wl_seat_listener seatListener = {
.name = seatNameHandler,
};
// Surface-handling listeners.
static void xdgSurfaceConfigure(void * data, struct xdg_surface * xdgSurface,
uint32_t serial)
{
if (wm.configured)
wm.resizeSerial = serial;
else
{
xdg_surface_ack_configure(xdgSurface, serial);
wm.configured = true;
}
}
static const struct xdg_surface_listener xdgSurfaceListener = {
.configure = xdgSurfaceConfigure,
};
static void xdgToplevelConfigure(void * data, struct xdg_toplevel * xdgToplevel,
int32_t width, int32_t height, struct wl_array * states)
{
wm.width = width;
wm.height = height;
}
static const struct xdg_toplevel_listener xdgToplevelListener = {
.configure = xdgToplevelConfigure,
};
static bool waylandEarlyInit(void)
{
if (!getenv("SDL_VIDEODRIVER"))
{
int err = setenv("SDL_VIDEODRIVER", "wayland", 1);
if (err < 0)
{
DEBUG_ERROR("Unable to set the env variable SDL_VIDEODRIVER: %d", err);
return false;
}
DEBUG_INFO("SDL_VIDEODRIVER has been set to wayland");
}
// Request to receive EPIPE instead of SIGPIPE when one end of a pipe
// disconnects while a write is pending. This is useful to the Wayland
// clipboard backend, where an arbitrary application is on the other end of
@ -352,14 +406,13 @@ static bool waylandInit(const LG_DSInitParams params)
{
memset(&wm, 0, sizeof(wm));
wm.display = info->info.wl.display;
wm.surface = info->info.wl.surface;
wm.display = wl_display_connect(NULL);
wm.registry = wl_display_get_registry(wm.display);
wl_registry_add_listener(wm.registry, &registryListener, NULL);
wl_display_roundtrip(wm.display);
if (!wm.seat || !wm.dataDeviceManager)
if (!wm.seat || !wm.dataDeviceManager || !wm.compositor || !wm.xdgWmBase)
{
DEBUG_ERROR("Compositor missing a required interface, will not proceed");
return false;
@ -379,11 +432,30 @@ static bool waylandInit(const LG_DSInitParams params)
"not be able to suppress idle states");
wl_seat_add_listener(wm.seat, &seatListener, NULL);
xdg_wm_base_add_listener(wm.xdgWmBase, &xdgWmBaseListener, NULL);
wl_display_roundtrip(wm.display);
wm.dataDevice = wl_data_device_manager_get_data_device(
wm.dataDeviceManager, wm.seat);
wm.surface = wl_compositor_create_surface(wm.compositor);
wm.eglWindow = wl_egl_window_create(wm.surface, params.w, params.h);
wm.xdgSurface = xdg_wm_base_get_xdg_surface(wm.xdgWmBase, wm.surface);
xdg_surface_add_listener(wm.xdgSurface, &xdgSurfaceListener, NULL);
wm.xdgToplevel = xdg_surface_get_toplevel(wm.xdgSurface);
xdg_toplevel_add_listener(wm.xdgToplevel, &xdgToplevelListener, NULL);
xdg_toplevel_set_title(wm.xdgToplevel, params.title);
xdg_toplevel_set_app_id(wm.xdgToplevel, "looking-glass-client");
if (params.fullscreen)
xdg_toplevel_set_fullscreen(wm.xdgToplevel, NULL);
wl_surface_commit(wm.surface);
wm.width = params.w;
wm.height = params.h;
return true;
}
@ -391,6 +463,109 @@ static void waylandStartup(void)
{
}
static void waylandShutdown(void)
{
}
#ifdef ENABLE_EGL
static EGLDisplay waylandGetEGLDisplay(void)
{
EGLNativeDisplayType native = (EGLNativeDisplayType) wm.display;
const char *early_exts = eglQueryString(NULL, EGL_EXTENSIONS);
if (strstr(early_exts, "EGL_KHR_platform_base") != NULL &&
g_egl_dynProcs.eglGetPlatformDisplay)
{
DEBUG_INFO("Using eglGetPlatformDisplay");
return g_egl_dynProcs.eglGetPlatformDisplay(EGL_PLATFORM_WAYLAND_KHR, native, NULL);
}
if (strstr(early_exts, "EGL_EXT_platform_base") != NULL &&
g_egl_dynProcs.eglGetPlatformDisplayEXT)
{
DEBUG_INFO("Using eglGetPlatformDisplayEXT");
return g_egl_dynProcs.eglGetPlatformDisplayEXT(EGL_PLATFORM_WAYLAND_EXT, native, NULL);
}
DEBUG_INFO("Using eglGetDisplay");
return eglGetDisplay(native);
}
static EGLNativeWindowType waylandGetEGLNativeWindow(void)
{
return (EGLNativeWindowType) wm.eglWindow;
}
static void waylandEGLSwapBuffers(EGLDisplay display, EGLSurface surface)
{
eglSwapBuffers(display, surface);
if (wm.resizeSerial)
{
wl_egl_window_resize(wm.eglWindow, wm.width, wm.height, 0, 0);
struct wl_region * region = wl_compositor_create_region(wm.compositor);
wl_region_add(region, 0, 0, wm.width, wm.height);
wl_surface_set_opaque_region(wm.surface, region);
wl_region_destroy(region);
app_handleResizeEvent(wm.width, wm.height, (struct Border) {0, 0, 0, 0});
xdg_surface_ack_configure(wm.xdgSurface, wm.resizeSerial);
wm.resizeSerial = 0;
}
}
#endif
static void waylandGLSwapBuffers(void)
{
// FIXME: implement.
}
static void waylandShowPointer(bool show)
{
// FIXME: implement.
}
static void waylandWait(unsigned int time)
{
while (wl_display_prepare_read(wm.display))
wl_display_dispatch_pending(wm.display);
wl_display_flush(wm.display);
struct pollfd pollfd = {
.fd = wl_display_get_fd(wm.display),
.events = POLLIN,
};
if (poll(&pollfd, 1, time) == -1 || pollfd.revents & POLLERR)
{
if (errno != EINTR)
DEBUG_INFO("Poll failed: %d\n", errno);
wl_display_cancel_read(wm.display);
}
else
wl_display_read_events(wm.display);
wl_display_dispatch_pending(wm.display);
}
static void waylandSetWindowSize(int x, int y)
{
// FIXME: implement.
}
static void waylandSetFullscreen(bool fs)
{
// FIXME: implement.
}
static bool waylandGetFullscreen(void)
{
// FIXME: implement.
return false;
}
static void relativePointerMotionHandler(void * data,
struct zwp_relative_pointer_v1 *pointer, uint32_t timeHi, uint32_t timeLo,
wl_fixed_t dxW, wl_fixed_t dyW, wl_fixed_t dxUnaccelW,
@ -479,6 +654,11 @@ static void waylandRealignPointer(void)
app_handleMouseBasic();
}
static bool waylandIsValidPointerPos(int x, int y)
{
return x >= 0 && x < wm.width && y >= 0 && y < wm.height;
}
static void waylandFree(void)
{
waylandUngrabPointer();
@ -508,23 +688,6 @@ static bool waylandGetProp(LG_DSProperty prop, void * ret)
return false;
}
static bool waylandEventFilter(SDL_Event * event)
{
/* prevent the default processing for the following events */
switch(event->type)
{
case SDL_MOUSEMOTION:
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
case SDL_MOUSEWHEEL:
case SDL_KEYDOWN:
case SDL_KEYUP:
return true;
}
return false;
}
static const char * textMimetypes[] =
{
"text/plain",
@ -862,21 +1025,36 @@ static void waylandCBRelease(void)
struct LG_DisplayServerOps LGDS_Wayland =
{
.probe = waylandProbe,
.earlyInit = waylandEarlyInit,
.init = waylandInit,
.startup = waylandStartup,
.free = waylandFree,
.getProp = waylandGetProp,
.eventFilter = waylandEventFilter,
.grabPointer = waylandGrabPointer,
.ungrabPointer = waylandUngrabPointer,
.grabKeyboard = waylandGrabKeyboard,
.ungrabKeyboard = waylandUngrabKeyboard,
.warpPointer = waylandWarpPointer,
.realignPointer = waylandRealignPointer,
.inhibitIdle = waylandInhibitIdle,
.uninhibitIdle = waylandUninhibitIdle,
.probe = waylandProbe,
.earlyInit = waylandEarlyInit,
.init = waylandInit,
.startup = waylandStartup,
.shutdown = waylandShutdown,
.free = waylandFree,
.getProp = waylandGetProp,
#ifdef ENABLE_EGL
.getEGLDisplay = waylandGetEGLDisplay,
.getEGLNativeWindow = waylandGetEGLNativeWindow,
.eglSwapBuffers = waylandEGLSwapBuffers,
#endif
.glSwapBuffers = waylandGLSwapBuffers,
.showPointer = waylandShowPointer,
.grabPointer = waylandGrabPointer,
.ungrabPointer = waylandUngrabPointer,
.grabKeyboard = waylandGrabKeyboard,
.ungrabKeyboard = waylandUngrabKeyboard,
.warpPointer = waylandWarpPointer,
.realignPointer = waylandRealignPointer,
.isValidPointerPos = waylandIsValidPointerPos,
.inhibitIdle = waylandInhibitIdle,
.uninhibitIdle = waylandUninhibitIdle,
.wait = waylandWait,
.setWindowSize = waylandSetWindowSize,
.setFullscreen = waylandSetFullscreen,
.getFullscreen = waylandGetFullscreen,
.cbInit = waylandCBInit,
.cbNotice = waylandCBNotice,

6
client/displayservers/X11/x11.c
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@ -814,6 +814,11 @@ static EGLNativeWindowType x11GetEGLNativeWindow(void)
{
return (EGLNativeWindowType)x11.window;
}
static void x11EGLSwapBuffers(EGLDisplay display, EGLSurface surface)
{
eglSwapBuffers(display, surface);
}
#endif
static void x11GLSwapBuffers(void)
@ -1370,6 +1375,7 @@ struct LG_DisplayServerOps LGDS_X11 =
#ifdef ENABLE_EGL
.getEGLDisplay = x11GetEGLDisplay,
.getEGLNativeWindow = x11GetEGLNativeWindow,
.eglSwapBuffers = x11EGLSwapBuffers,
#endif
.glSwapBuffers = x11GLSwapBuffers,
.showPointer = x11ShowPointer,

1
client/include/app.h
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@ -60,6 +60,7 @@ bool app_getProp(LG_DSProperty prop, void * ret);
EGLDisplay app_getEGLDisplay(void);
EGLNativeWindowType app_getEGLNativeWindow(void);
void app_eglSwapBuffers(EGLDisplay display, EGLSurface surface);
void app_glSwapBuffers(void);
void app_clipboardRelease(void);

2
client/include/interface/displayserver.h
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@ -100,6 +100,7 @@ struct LG_DisplayServerOps
/* EGL support */
EGLDisplay (*getEGLDisplay)(void);
EGLNativeWindowType (*getEGLNativeWindow)(void);
void (*eglSwapBuffers)(EGLDisplay display, EGLSurface surface);
#endif
/* opengl platform specific methods */
@ -152,6 +153,7 @@ struct LG_DisplayServerOps
(x)->getProp && \
(x)->getEGLDisplay && \
(x)->getEGLNativeWindow && \
(x)->eglSwapBuffers && \
(x)->glSwapBuffers && \
(x)->showPointer && \
(x)->grabPointer && \

9
client/renderers/EGL/egl.c
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@ -164,13 +164,6 @@ void egl_setup(void)
bool egl_create(void ** opaque, const LG_RendererParams params)
{
// Fail if running on Wayland so that OpenGL is used instead. Wayland-EGL
// is broken (https://github.com/gnif/LookingGlass/issues/306) and isn't
// fixable until SDL is dropped entirely. Until then, the OpenGL renderer
// "mostly works".
if (getenv("WAYLAND_DISPLAY"))
return false;
// check if EGL is even available
if (!eglQueryString(EGL_NO_DISPLAY, EGL_VERSION))
return false;
@ -707,7 +700,7 @@ bool egl_render(void * opaque, LG_RendererRotate rotate)
}
egl_fps_render(this->fps, this->screenScaleX, this->screenScaleY);
eglSwapBuffers(this->display, this->surface);
app_eglSwapBuffers(this->display, this->surface);
return true;
}

5
client/src/app.c
View File

@ -576,6 +576,11 @@ EGLNativeWindowType app_getEGLNativeWindow(void)
return g_state.ds->getEGLNativeWindow();
}
void app_eglSwapBuffers(EGLDisplay display, EGLSurface surface)
{
g_state.ds->eglSwapBuffers(display, surface);
}
void app_glSwapBuffers(void)
{
g_state.ds->glSwapBuffers();