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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi all,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Recently, I’ve tried to enable my opengles application run on tizen-ivi, tizen-ivi use wayland to display, how to enable the opengles part show on it?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> My latest patch crashed again, the following sequences describe what I do on for the opengles parts:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>wl_display_connect(NULL) </span><span lang=EN-US style='font-family:Wingdings'>à</span><span lang=EN-US> return a global g_nativeDisplay object, I see someone do it, so that I do it.<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>wl_display_get_registry, wl_registry_add_listener, wl_display_dispatch -> some APIs I’m not familiar, I see someone do it, so that I do it.<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>wl_egl_window_create(<span style='color:red'>NULL</span>,1280,720) </span><span lang=EN-US style='font-family:Wingdings'>à</span><span lang=EN-US> return a nativeWindow object which will be passed for EGL to Create Window Surface, I believe that the “NULL”(wl_surface*) parameter lead to the crash. But I have no idea how to get a wl_surface object.<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>eglGetDisplay, eglInitialize, eglChooseConfig, eglCreateContext, eglCreateWindowSurface, eglMakeCurrent, eglQuerySurface, these APIs all work fine, return no error. <o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>5.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>eglSwapBuffers, lead to the crash, trace the bt, I find that it is because wl_surface is<b><span style='color:red'> NULL,</span></b><o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US>(gdb) bt<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US>#0 0xb7e35a85 in wl_proxy_create () from /lib/libwayland-client.so.0<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US>#1 0xb7e1ac10 in wl_surface_frame (wl_surface=0x0)<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US> at /home/jacky/Apps/Wayland/include/wayland-client-protocol.h:1355<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US>#2 0xb7e1bfbb in dri2_wl_swap_buffers_with_damage (drv=0x8730f88, <o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US> disp=0x8730300, draw=0x87cc380, rects=0x0, n_rects=0)<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US> at platform_wayland.c:617<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US>#3 0xb7e1c309 in dri2_wl_swap_buffers (drv=0x8730f88, disp=0x8730300, <o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US> draw=0x87cc380) at platform_wayland.c:702<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US>#4 0xb7e19739 in dri2_swap_buffers (drv=0x8730f88, dpy=0x8730300, <o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US> surf=0x87cc380) at egl_dri2.c:1074<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US>#5 0xb7e0cd03 in eglSwapBuffers (dpy=0x8730300, surface=0x87cc380)<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt'><span lang=EN-US>at eglapi.c:811<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> I searched the internet but get less useful information, even now , I plan to make some fake data to initialize the wl_surface, but I have not got the definition for the struct “wl_surface”, just a url(<a href="http://wayland.freedesktop.org/docs/html/protocol-spec-interface-wl_surface.html">http://wayland.freedesktop.org/docs/html/protocol-spec-interface-wl_surface.html</a> ) describe how to use its function, no initialize function…<o:p></o:p></span></p><p class=MsoNormal style='text-indent:10.5pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:10.5pt'><span lang=EN-US>It is so different from X11 who only need to prepare a window passed to EGL, So far, I’ve learned I need prepare a wl_egl_window and a wl_surface for EGL on wayland, wl_egl_window need three parameters “wl_surface”, “width” and “height” to create,but “wl_surface” seems need compositor(API:”wl_compositor_create_surface” )to create, so compositor need what to create? May I need to create a compositor firstly?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> Could someone help me lists how to use the wayland’s API and EGL’s wayland API to enable the display on wayland?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US style='font-size:11.0pt;color:#1F497D'>Best Regards,</span><span lang=EN-US style='font-size:11.0pt;font-family:SimSun;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US style='font-size:11.0pt;color:#1F497D'>Jacky Ni</span><span lang=EN-US style='font-size:11.0pt'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div><p>CONFIDENTIALITY NOTICE: The information contained in this message may be privileged and/or confidential. 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