Wayland support

Based on the original port to Wayland by: Joel Teichroeb, Benjamin Franzke, Scott Moreau, et al.

Additional changes in this commit, done by me:

* Wayland uses the common EGL framework
* EGL can now create a desktop OpenGL context
* testgl2 loads GL functions dynamically, no need to link to libGL anymore
* Assorted fixes to the Wayland backend

Tested on the Weston Compositor (v1.0.5) that ships with Ubuntu 13.10,
running Weston under X. Tests ran: testrendercopyex (all backends), testgl2, testgles2,testintersections

Author: gabomdq

CMakeLists.txt

@@ -218,6 +218,7 @@ set_option(RPATH               "Use an rpath when linking SDL" ${UNIX_SYS})
 set_option(CLOCK_GETTIME       "Use clock_gettime() instead of gettimeofday()" OFF)
 set_option(INPUT_TSLIB         "Use the Touchscreen library for input" ${UNIX_SYS})
 set_option(VIDEO_X11           "Use X11 video driver" ${UNIX_SYS})
+set_option(VIDEO_WAYLAND       "Use Wayland video driver" ${UNIX_SYS})
 dep_option(X11_SHARED          "Dynamically load X11 support" ON "VIDEO_X11" OFF)
 set(SDL_X11_OPTIONS Xcursor Xinerama XInput Xrandr Xscrnsaver XShape Xvm)
 foreach(_SUB ${SDL_X11_OPTIONS})
@@ -641,6 +642,7 @@ if(UNIX AND NOT APPLE)
     CheckDirectFB()
     CheckOpenGLX11()
     CheckOpenGLESX11()
+    CheckWayland()
   endif(SDL_VIDEO)
 
   if(LINUX)

WhatsNew.txt

@@ -7,7 +7,10 @@ This is a list of major changes in SDL's version history.
 General:
 * Added an API to load a database of Game Controller mappings from a file:    
     SDL_GameControllerAddMappingsFromFile
-    
+* EGL can now create/manage OpenGL and OpenGL ES 1.x/2.x contexts, and share
+  them using SDL_GL_SHARE_WITH_CURRENT_CONTEXT
+* Added testgles2. testgl2 does not need to link with libGL anymore.
+  
 Windows:
 * Support for OpenGL ES 2.x contexts using either WGL or EGL (natively via
   the driver or emulated through ANGLE)
@@ -20,7 +23,7 @@ Android:
 
 Linux:
 * Fixed fullscreen and focused behavior when receiving NotifyGrab events
-
+* Wayland support
 
 ---------------------------------------------------------------------------
 2.0.1:

cmake/sdlchecks.cmake

@@ -505,6 +505,29 @@ macro(CheckX11)
   endif(VIDEO_X11)
 endmacro(CheckX11)
 
+# Requires:
+# - EGL
+macro(CheckWayland)
+  if(VIDEO_WAYLAND)
+    pkg_check_modules(WAYLAND wayland-client wayland-cursor wayland-egl egl xkbcommon)
+    if(WAYLAND_FOUND)
+      link_directories(
+          ${WAYLAND_LIBRARY_DIRS}
+      )
+      include_directories(
+          ${WAYLAND_INCLUDE_DIRS}
+      )
+      set(EXTRA_LIBS ${WAYLAND_LIBRARIES} ${EXTRA_LIBS})
+      set(HAVE_VIDEO_WAYLAND TRUE)
+      set(HAVE_SDL_VIDEO TRUE)
+
+      file(GLOB WAYLAND_SOURCES ${SDL2_SOURCE_DIR}/src/video/wayland/*.c)
+      set(SOURCE_FILES ${SOURCE_FILES} ${WAYLAND_SOURCES})
+      set(SDL_VIDEO_DRIVER_WAYLAND 1)
+    endif(WAYLAND_FOUND)
+  endif(VIDEO_WAYLAND)
+endmacro(CheckWayland)
+
 # Requires:
 # - n/a
 #

configure

@@ -817,6 +817,7 @@ enable_sndio
 enable_sndio_shared
 enable_diskaudio
 enable_dummyaudio
+enable_video_wayland
 enable_video_x11
 with_x
 enable_x11_shared
@@ -1532,6 +1533,7 @@ Optional Features:
   --enable-sndio-shared   dynamically load sndio audio support [[default=yes]]
   --enable-diskaudio      support the disk writer audio driver [[default=yes]]
   --enable-dummyaudio     support the dummy audio driver [[default=yes]]
+  --enable-video-wayland  use Wayland video driver [[default=yes]]
   --enable-video-x11      use X11 video driver [[default=yes]]
   --enable-x11-shared     dynamically load X11 support [[default=maybe]]
   --enable-video-x11-xcursor
@@ -18633,6 +18635,82 @@ $as_echo "$need_gcc_Wno_multichar" >&6; }
     fi
 }
 
+CheckWayland()
+{
+    # Check whether --enable-video-wayland was given.
+if test "${enable_video_wayland+set}" = set; then :
+  enableval=$enable_video_wayland;
+else
+  enable_video_wayland=yes
+fi
+
+
+    if test x$enable_video = xyes -a x$enable_video_wayland = xyes; then
+        # Extract the first word of "pkg-config", so it can be a program name with args.
+set dummy pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_PKG_CONFIG+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $PKG_CONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_path_PKG_CONFIG" && ac_cv_path_PKG_CONFIG="no"
+  ;;
+esac
+fi
+PKG_CONFIG=$ac_cv_path_PKG_CONFIG
+if test -n "$PKG_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+$as_echo "$PKG_CONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for Wayland support" >&5
+$as_echo_n "checking for Wayland support... " >&6; }
+        video_wayland=no
+        if test x$PKG_CONFIG != xno; then
+            if $PKG_CONFIG --exists wayland-client wayland-egl wayland-cursor egl xkbcommon ; then
+                WAYLAND_CFLAGS=`$PKG_CONFIG --cflags wayland-client wayland-egl wayland-cursor egl xkbcommon`
+                WAYLAND_LIBS=`$PKG_CONFIG --libs wayland-client wayland-egl wayland-cursor egl xkbcommon`
+                video_wayland=yes
+            fi
+        fi
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: $video_wayland" >&5
+$as_echo "$video_wayland" >&6; }
+
+        if test x$video_wayland = xyes; then
+
+$as_echo "#define SDL_VIDEO_DRIVER_WAYLAND 1" >>confdefs.h
+
+            SOURCES="$SOURCES $srcdir/src/video/wayland/*.c"
+            EXTRA_CFLAGS="$EXTRA_CFLAGS $WAYLAND_CFLAGS"
+                        EXTRA_LDFLAGS="$EXTRA_LDFLAGS $WAYLAND_LIBS"
+            have_video=yes
+        fi
+    fi
+}
 
 CheckX11()
 {
@@ -22220,6 +22298,7 @@ case "$host" in
         CheckNAS
         CheckSNDIO
         CheckX11
+        CheckWayland
         CheckDirectFB
         CheckFusionSound
         CheckOpenGLX11

configure.in

@@ -1115,6 +1115,36 @@ CheckWarnAll()
     fi
 }
 
+dnl Check for Wayland
+CheckWayland()
+{
+    AC_ARG_ENABLE(video-wayland,
+AC_HELP_STRING([--enable-video-wayland], [use Wayland video driver [[default=yes]]]),
+                  ,enable_video_wayland=yes)
+
+    if test x$enable_video = xyes -a x$enable_video_wayland = xyes; then
+        AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
+        AC_MSG_CHECKING(for Wayland support)
+        video_wayland=no
+        if test x$PKG_CONFIG != xno; then
+            if $PKG_CONFIG --exists wayland-client wayland-egl wayland-cursor egl xkbcommon ; then
+                WAYLAND_CFLAGS=`$PKG_CONFIG --cflags wayland-client wayland-egl wayland-cursor egl xkbcommon`
+                WAYLAND_LIBS=`$PKG_CONFIG --libs wayland-client wayland-egl wayland-cursor egl xkbcommon`
+                video_wayland=yes
+            fi
+        fi
+        AC_MSG_RESULT($video_wayland)
+
+        if test x$video_wayland = xyes; then
+            AC_DEFINE(SDL_VIDEO_DRIVER_WAYLAND, 1, [ ])
+            SOURCES="$SOURCES $srcdir/src/video/wayland/*.c"
+            EXTRA_CFLAGS="$EXTRA_CFLAGS $WAYLAND_CFLAGS"
+            dnl FIXME do dynamic loading code here.
+            EXTRA_LDFLAGS="$EXTRA_LDFLAGS $WAYLAND_LIBS"
+            have_video=yes
+        fi
+    fi
+}
 
 dnl Find the X11 include and library directories
 CheckX11()
@@ -2449,6 +2479,7 @@ case "$host" in
         CheckNAS
         CheckSNDIO
         CheckX11
+        CheckWayland
         CheckDirectFB
         CheckFusionSound
         CheckOpenGLX11

include/SDL_config.h.cmake

@@ -259,6 +259,7 @@
 #cmakedefine SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC @SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC@
 #cmakedefine SDL_VIDEO_DRIVER_DUMMY @SDL_VIDEO_DRIVER_DUMMY@
 #cmakedefine SDL_VIDEO_DRIVER_WINDOWS @SDL_VIDEO_DRIVER_WINDOWS@
+#cmakedefine SDL_VIDEO_DRIVER_WAYLAND @SDL_VIDEO_DRIVER_WAYLAND@
 #cmakedefine SDL_VIDEO_DRIVER_X11 @SDL_VIDEO_DRIVER_X11@
 #cmakedefine SDL_VIDEO_DRIVER_X11_DYNAMIC @SDL_VIDEO_DRIVER_X11_DYNAMIC@
 #cmakedefine SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT @SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT@

include/SDL_config.h.in

@@ -260,6 +260,7 @@
 #undef SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC
 #undef SDL_VIDEO_DRIVER_DUMMY
 #undef SDL_VIDEO_DRIVER_WINDOWS
+#undef SDL_VIDEO_DRIVER_WAYLAND
 #undef SDL_VIDEO_DRIVER_X11
 #undef SDL_VIDEO_DRIVER_RPI
 #undef SDL_VIDEO_DRIVER_X11_DYNAMIC

include/SDL_syswm.h

@@ -101,6 +101,7 @@ typedef enum
     SDL_SYSWM_UNKNOWN,
     SDL_SYSWM_WINDOWS,
     SDL_SYSWM_X11,
+    SDL_SYSWM_WAYLAND,
     SDL_SYSWM_DIRECTFB,
     SDL_SYSWM_COCOA,
     SDL_SYSWM_UIKIT,
@@ -175,6 +176,14 @@ struct SDL_SysWMinfo
             Window window;              /**< The X11 window */
         } x11;
 #endif
+#if defined(SDL_VIDEO_DRIVER_WAYLAND)
+        struct
+        {
+            struct wl_display *display;            /**< Wayland display */
+            struct wl_surface *surface;            /**< Wayland surface */
+            struct wl_shell_surface *shell_surface; /**< Wayland shell_surface (window manager handle) */
+        } wl;
+#endif
 #if defined(SDL_VIDEO_DRIVER_DIRECTFB)
         struct
         {

src/render/opengl/SDL_glfuncs.h

@@ -30,7 +30,7 @@ SDL_PROC_UNUSED(void, glColor3bv, (const GLbyte *))
 SDL_PROC_UNUSED(void, glColor3d, (GLdouble, GLdouble, GLdouble))
 SDL_PROC_UNUSED(void, glColor3dv, (const GLdouble *))
 SDL_PROC_UNUSED(void, glColor3f, (GLfloat, GLfloat, GLfloat))
-SDL_PROC_UNUSED(void, glColor3fv, (const GLfloat *))
+SDL_PROC(void, glColor3fv, (const GLfloat *))
 SDL_PROC_UNUSED(void, glColor3i, (GLint, GLint, GLint))
 SDL_PROC_UNUSED(void, glColor3iv, (const GLint *))
 SDL_PROC_UNUSED(void, glColor3s, (GLshort, GLshort, GLshort))
@@ -85,7 +85,7 @@ SDL_PROC_UNUSED(void, glCopyTexSubImage2D,
 SDL_PROC_UNUSED(void, glCullFace, (GLenum mode))
 SDL_PROC_UNUSED(void, glDeleteLists, (GLuint list, GLsizei range))
 SDL_PROC(void, glDeleteTextures, (GLsizei n, const GLuint * textures))
-SDL_PROC_UNUSED(void, glDepthFunc, (GLenum func))
+SDL_PROC(void, glDepthFunc, (GLenum func))
 SDL_PROC_UNUSED(void, glDepthMask, (GLboolean flag))
 SDL_PROC_UNUSED(void, glDepthRange, (GLclampd zNear, GLclampd zFar))
 SDL_PROC(void, glDisable, (GLenum cap))
@@ -334,13 +334,13 @@ SDL_PROC_UNUSED(void, glRectsv, (const GLshort * v1, const GLshort * v2))
 SDL_PROC_UNUSED(GLint, glRenderMode, (GLenum mode))
 SDL_PROC(void, glRotated,
                 (GLdouble angle, GLdouble x, GLdouble y, GLdouble z))
-SDL_PROC_UNUSED(void, glRotatef,
+SDL_PROC(void, glRotatef,
                 (GLfloat angle, GLfloat x, GLfloat y, GLfloat z))
 SDL_PROC_UNUSED(void, glScaled, (GLdouble x, GLdouble y, GLdouble z))
 SDL_PROC_UNUSED(void, glScalef, (GLfloat x, GLfloat y, GLfloat z))
 SDL_PROC(void, glScissor, (GLint x, GLint y, GLsizei width, GLsizei height))
 SDL_PROC_UNUSED(void, glSelectBuffer, (GLsizei size, GLuint * buffer))
-SDL_PROC_UNUSED(void, glShadeModel, (GLenum mode))
+SDL_PROC(void, glShadeModel, (GLenum mode))
 SDL_PROC_UNUSED(void, glStencilFunc, (GLenum func, GLint ref, GLuint mask))
 SDL_PROC_UNUSED(void, glStencilMask, (GLuint mask))
 SDL_PROC_UNUSED(void, glStencilOp, (GLenum fail, GLenum zfail, GLenum zpass))
@@ -432,7 +432,7 @@ SDL_PROC_UNUSED(void, glVertex2sv, (const GLshort * v))
 SDL_PROC_UNUSED(void, glVertex3d, (GLdouble x, GLdouble y, GLdouble z))
 SDL_PROC_UNUSED(void, glVertex3dv, (const GLdouble * v))
 SDL_PROC_UNUSED(void, glVertex3f, (GLfloat x, GLfloat y, GLfloat z))
-SDL_PROC_UNUSED(void, glVertex3fv, (const GLfloat * v))
+SDL_PROC(void, glVertex3fv, (const GLfloat * v))
 SDL_PROC_UNUSED(void, glVertex3i, (GLint x, GLint y, GLint z))
 SDL_PROC_UNUSED(void, glVertex3iv, (const GLint * v))
 SDL_PROC_UNUSED(void, glVertex3s, (GLshort x, GLshort y, GLshort z))