[Mesa-users] Give A directFB surface to EGL
Albert Freeman
albertwdfreeman at gmail.com
Thu Oct 22 05:01:07 PDT 2015
On 22 October 2015 at 11:39, 刘涛 <liutao586 at 163.com> wrote:
> Thanks a lot, I will try. By the way I found Qt source code use DirectFB to
> EGL like below:
>
> void QDirectFbWindowEGL::createDirectFBWindow()
> {
> // Use the default for the raster surface.
> if (window()->surfaceType() == QSurface::RasterSurface)
> return QDirectFbWindow::createDirectFBWindow();
>
> Q_ASSERT(!m_dfbWindow.data());
>
> DFBWindowDescription description;
> memset(&description, 0, sizeof(DFBWindowDescription));
> description.flags = DFBWindowDescriptionFlags(DWDESC_WIDTH |
> DWDESC_HEIGHT|
> DWDESC_POSX | DWDESC_POSY|
> DWDESC_PIXELFORMAT |
> DWDESC_SURFACE_CAPS);
> description.width = qMax(1, window()->width());
> description.height = qMax(1, window()->height());
> description.posx = window()->x();
> description.posy = window()->y();
>
> description.surface_caps = DSCAPS_GL;
> description.pixelformat = DSPF_RGB16;
>
> IDirectFBDisplayLayer *layer;
> layer = toDfbScreen(window())->dfbLayer();
> DFBResult result = layer->CreateWindow(layer, &description,
> m_dfbWindow.outPtr());
> if (result != DFB_OK)
> DirectFBError("QDirectFbWindow: failed to create window", result);
>
> m_dfbWindow->SetOpacity(m_dfbWindow.data(), 0xff);
> m_inputHandler->addWindow(m_dfbWindow.data(), window());
> }
>
> EGLSurface QDirectFbWindowEGL::eglSurface()
> {
> if (m_eglSurface == EGL_NO_SURFACE) {
> QDirectFbScreenEGL *dfbScreen = static_cast<QDirectFbScreenEGL
> *>(screen());
> EGLConfig config = q_configFromGLFormat(dfbScreen->eglDisplay(),
> format(), true);
> m_eglSurface = eglCreateWindowSurface(dfbScreen->eglDisplay(),
> config, dfbSurface(), NULL);
>
> if (m_eglSurface == EGL_NO_SURFACE)
> eglGetError();
> }
>
> return m_eglSurface;
> }
>
> But it doesn't work for me. May be it out of date.
>
> 在 2015-10-22 19:27:16，"Albert Freeman" <albertwdfreeman at gmail.com> 写道：
>>On 22 October 2015 at 21:22, 刘涛 <liutao586 at 163.com> wrote:
>>> The RAM on my board is too small to debug my program. So I want to debug
>>> my
>>> program on my PC to ensure my code is correct, then port it to my board.
>>>
>>> 在 2015-10-22 18:39:11，"Albert Freeman" <albertwdfreeman at gmail.com> 写道：
>>>>On 22 October 2015 at 19:19, 刘涛 <liutao586 at 163.com> wrote:
>>>>> Thank you very much. My board is only support DirectFB, EGL and GLES2,
>>>>> and
>>>>> the route "DirectFB->EGL->GLES2" works good on it, but it is hard to
>>>>> debug
>>>>> on my board. So I want to program and debug the route on my PC. Is it
>>>>> noway?
>>>>>
>>>>> 在 2015-10-22 16:32:58，"Albert Freeman" <albertwdfreeman at gmail.com> 写道：
>>>>>>On 22 October 2015 at 15:35, 刘涛 <liutao586 at 163.com> wrote:
>>>>>>> Hi
>>>>>>> I‘m trying to give a directFB surface to eglCreateWindowSurface(),
>>>>>>> like
>>>>>>> below:
>>>>>>> //1 create Directfb Surface
>>>>>>> DFBDisplayLayerConfig dlc;
>>>>>>> DFBSurfaceDescription dsc;
>>>>>>> DFBWindowDescription dsc_w;
>>>>>>> DirectFBInit(0, NULL);
>>>>>>> DirectFBCreate(&_pDFB);
>>>>>>> _pDFB->SetCooperativeLevel(_pDFB, DFSCL_FULLSCREEN);
>>>>>>> memset(&dsc, 0, sizeof(dsc));
>>>>>>> dsc.flags = (DFBSurfaceDescriptionFlags)(DSDESC_CAPS);
>>>>>>> dsc.caps = (DFBSurfaceCapabilities)(DSCAPS_PRIMARY |
>>>>>>> DSCAPS_DOUBLE|DSCAPS_GL);
>>>>>>> DFBCHECK(_pDFB->CreateSurface(_pDFB, &dsc, &_pDFB_surface));
>>>>>>>
>>>>>>> //2 create egl surface
>>>>>>> EGLDisplay eglDisplay = EGL_NO_DISPLAY;
>>>>>>> EGLint iMajorVersion, iMinorVersion;
>>>>>>> EGLint configAttribs[] =
>>>>>>> {
>>>>>>> EGL_RED_SIZE, 8,
>>>>>>> EGL_GREEN_SIZE, 8,
>>>>>>> EGL_BLUE_SIZE, 8,
>>>>>>> EGL_ALPHA_SIZE, 8,
>>>>>>> EGL_DEPTH_SIZE, 24,
>>>>>>> EGL_STENCIL_SIZE, 8,
>>>>>>> EGL_SAMPLES, 0,
>>>>>>> EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
>>>>>>> EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
>>>>>>> EGL_NONE
>>>>>>> };
>>>>>>> EGLConfig eglConfig = 0;
>>>>>>> EGLint iConfigs = 0;
>>>>>>>
>>>>>>> eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
>>>>>>> eglInitialize(eglDisplay, &iMajorVersion, &iMinorVersion);
>>>>>>> eglBindAPI(EGL_OPENGL_ES_API);
>>>>>>> eglChooseConfig(eglDisplay, configAttribs, &eglConfig, 1,
>>>>>>> &iConfigs);
>>>>>>> eglSurface = eglCreateWindowSurface(eglDisplay, eglConfig,
>>>>>>> (EGLNativeWindowType)_pDFB_surface, NULL);
>>>>>>>
>>>>>>> But it failed and got 0x3003 error code.
>>>>>>> Any idea about that?
>>>>>>> Env:
>>>>>>> Ubuntu 14..04.3, Mesa-10.1.3, DirectFB-1.7.6(use system x11)
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> mesa-users mailing list
>>>>>>> mesa-users at lists.freedesktop.org
>>>>>>> http://lists.freedesktop.org/mailman/listinfo/mesa-users
>>>>>>>
>>>>>>You can't use EGL with DirectFB.
>>>>>>DirectFB had a DirectFBGL "extension" for 3D with DirectFB that has
>>>>>>apparently died.
>>>>>>So you can't get 3D hardware acceleration with DirectFB.
>>>>>>DirectFB uses the older fbdev legacy kernel stuff (which the
>>>>>>replacement drm at least partially emulates). Although fbdev supports
>>>>>>more hardware than the drm. If you are on hardware that doesn't
>>>>>>support drm then the best approach I can think of is to software
>>>>>>render OpenGL and then somehow obtain the texture rendered to and
>>>>>>somehow send that as a 2D image with something that can draw to a
>>>>>>fbdev framebuffer (such as DirectFB) (don't ask me how, ask someone
>>>>>>else (best to ask on #dri-devel irc channel)). For someone like you it
>>>>>>is best to use the latest git (not stable) version of mesa.
>>>>>>If your hardware supports drm, your choices for 3D are:
>>>>>>1. Use GL (optionally ES) & EGL & drm & gbm with mesa and without
>>>>>>DirectFB (see eglkms.c demo in mesa demos and "man -k drm" and maybe
>>>>>>http://events.linuxfoundation.org/sites/events/files/slides/brezillon-drm-kms.pdf)
>>>>>>(this runs without a window system and works much like DirectFB but I
>>>>>>believe you must use OpenGL (optionally ES) for 2D too (although you
>>>>>>MIGHT be able to setup a hardware overlay for video)). If you are not
>>>>>>using a relatively modern radeon, intel or nvidia card software
>>>>>>rendering is probably the best way to go here (using softpipe (or if
>>>>>>you are on x86 only: llvmpipe)).
>>>>>>2. Use Wayland with EGL and mesa and without DirectFB.
>>>>>>3. Use X and without DirectFB with (mesa OR proprietary drivers).
>>>>>>
>>>>>>How to force softpipe:
>>>>>>"export GALLIUM_DRIVER=softpipe" and
>>>>>>"export LIBGL_ALWAYS_SOFTWARE=1". You will need to add swrast to the
>>>>>>gallium (NOT dri) mesa compile option (e.g.
>>>>>>--with-gallium-drivers=swrast) and
>>>>>>recompile mesa.
>>>>>>
>>>>>>You can also force llvmpipe with "export GALLIUM_DRIVER=llvmpipe".
>>>>>>Actually "export LIBGL_ALWAYS_SOFTWARE=1" is only required if you have
>>>>>>a non gallium mesa driver installed (such as the i965 intel driver).
>>>>>>
>>>>>>I hope I didn't forget anything.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>Oh sorry, it does seem DirectFB can be used with EGL (I have never
>>>>used DirectFB before and the information I found implied that it would
>>>>be tricky to interface with EGL).
>>>>What do you mean by debug? Display the framebuffer (drawn on your
>>>>embedded board) on your PC?
>>>
>>>
>>>
>>>
>>On 22 October 2015 at 20:39, Albert Freeman <albertwdfreeman at gmail.com>
>> wrote:
>>> On 22 October 2015 at 19:19, 刘涛 <liutao586 at 163.com> wrote:
>>>> Thank you very much. My board is only support DirectFB, EGL and GLES2,
>>>> and
>>>> the route "DirectFB->EGL->GLES2" works good on it, but it is hard to
>>>> debug
>>>> on my board. So I want to program and debug the route on my PC. Is it
>>>> noway?
>>>>
>>>> 在 2015-10-22 16:32:58，"Albert Freeman" <albertwdfreeman at gmail.com> 写道：
>>>>>On 22 October 2015 at 15:35, 刘涛 <liutao586 at 163.com> wrote:
>>>>>> Hi
>>>>>> I‘m trying to give a directFB surface to eglCreateWindowSurface(),
>>>>>> like
>>>>>> below:
>>>>>> //1 create Directfb Surface
>>>>>> DFBDisplayLayerConfig dlc;
>>>>>> DFBSurfaceDescription dsc;
>>>>>> DFBWindowDescription dsc_w;
>>>>>> DirectFBInit(0, NULL);
>>>>>> DirectFBCreate(&_pDFB);
>>>>>> _pDFB->SetCooperativeLevel(_pDFB, DFSCL_FULLSCREEN);
>>>>>> memset(&dsc, 0, sizeof(dsc));
>>>>>> dsc.flags = (DFBSurfaceDescriptionFlags)(DSDESC_CAPS);
>>>>>> dsc.caps = (DFBSurfaceCapabilities)(DSCAPS_PRIMARY |
>>>>>> DSCAPS_DOUBLE|DSCAPS_GL);
>>>>>> DFBCHECK(_pDFB->CreateSurface(_pDFB, &dsc, &_pDFB_surface));
>>>>>>
>>>>>> //2 create egl surface
>>>>>> EGLDisplay eglDisplay = EGL_NO_DISPLAY;
>>>>>> EGLint iMajorVersion, iMinorVersion;
>>>>>> EGLint configAttribs[] =
>>>>>> {
>>>>>> EGL_RED_SIZE, 8,
>>>>>> EGL_GREEN_SIZE, 8,
>>>>>> EGL_BLUE_SIZE, 8,
>>>>>> EGL_ALPHA_SIZE, 8,
>>>>>> EGL_DEPTH_SIZE, 24,
>>>>>> EGL_STENCIL_SIZE, 8,
>>>>>> EGL_SAMPLES, 0,
>>>>>> EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
>>>>>> EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
>>>>>> EGL_NONE
>>>>>> };
>>>>>> EGLConfig eglConfig = 0;
>>>>>> EGLint iConfigs = 0;
>>>>>>
>>>>>> eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
>>>>>> eglInitialize(eglDisplay, &iMajorVersion, &iMinorVersion);
>>>>>> eglBindAPI(EGL_OPENGL_ES_API);
>>>>>> eglChooseConfig(eglDisplay, configAttribs, &eglConfig, 1,
>>>>>> &iConfigs);
>>>>>> eglSurface = eglCreateWindowSurface(eglDisplay, eglConfig,
>>>>>> (EGLNativeWindowType)_pDFB_surface, NULL);
>>>>>>
>>>>>> But it failed and got 0x3003 error code.
>>>>>> Any idea about that?
>>>>>> Env:
>>>>>> Ubuntu 14..04.3, Mesa-10.1.3, DirectFB-1.7.6(use system x11)
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> mesa-users mailing list
>>>>>> mesa-users at lists.freedesktop.org
>>>>>> http://lists.freedesktop.org/mailman/listinfo/mesa-users
>>>>>>
>>>>>You can't use EGL with DirectFB.
>>>>>DirectFB had a DirectFBGL "extension" for 3D with DirectFB that has
>>>>>apparently died.
>>>>>So you can't get 3D hardware acceleration with DirectFB.
>>>>>DirectFB uses the older fbdev legacy kernel stuff (which the
>>>>>replacement drm at least partially emulates). Although fbdev supports
>>>>>more hardware than the drm. If you are on hardware that doesn't
>>>>>support drm then the best approach I can think of is to software
>>>>>render OpenGL and then somehow obtain the texture rendered to and
>>>>>somehow send that as a 2D image with something that can draw to a
>>>>>fbdev framebuffer (such as DirectFB) (don't ask me how, ask someone
>>>>>else (best to ask on #dri-devel irc channel)). For someone like you it
>>>>>is best to use the latest git (not stable) version of mesa.
>>>>>If your hardware supports drm, your choices for 3D are:
>>>>>1. Use GL (optionally ES) & EGL & drm & gbm with mesa and without
>>>>>DirectFB (see eglkms.c demo in mesa demos and "man -k drm" and maybe
>>>>>http://events.linuxfoundation.org/sites/events/files/slides/brezillon-drm-kms.pdf)
>>>>>(this runs without a window system and works much like DirectFB but I
>>>>>believe you must use OpenGL (optionally ES) for 2D too (although you
>>>>>MIGHT be able to setup a hardware overlay for video)). If you are not
>>>>>using a relatively modern radeon, intel or nvidia card software
>>>>>rendering is probably the best way to go here (using softpipe (or if
>>>>>you are on x86 only: llvmpipe)).
>>>>>2. Use Wayland with EGL and mesa and without DirectFB.
>>>>>3. Use X and without DirectFB with (mesa OR proprietary drivers).
>>>>>
>>>>>How to force softpipe:
>>>>>"export GALLIUM_DRIVER=softpipe" and
>>>>>"export LIBGL_ALWAYS_SOFTWARE=1". You will need to add swrast to the
>>>>>gallium (NOT dri) mesa compile option (e.g.
>>>>>--with-gallium-drivers=swrast) and
>>>>>recompile mesa.
>>>>>
>>>>>You can also force llvmpipe with "export GALLIUM_DRIVER=llvmpipe".
>>>>>Actually "export LIBGL_ALWAYS_SOFTWARE=1" is only required if you have
>>>>>a non gallium mesa driver installed (such as the i965 intel driver).
>>>>>
>>>>>I hope I didn't forget anything.
>>>>
>>>>
>>>>
>>>>
>>> Oh sorry, it does seem DirectFB can be used with EGL (I have never
>>> used DirectFB before and the information I found implied that it would
>>> be tricky to interface with EGL).
>>> What do you mean by debug? Display the framebuffer (drawn on your
>>> embedded board) on your PC?
>>Oh, you mean use DirectFB with latest mesa 3D drivers.
>>You won't be able to use hardware acceleration with DirectFB, although
>>someone wrote a DirectFB "backend" for softpipe/llvmpipe a while ago
>>(2013):
>>http://lists.freedesktop.org/archives/mesa-dev/2013-April/037768.html
>>You may have to download an older revision of mesa and then apply the
>>patch (as there is no DirectFB backend in the latest revision of
>>mesa). And maybe they didn't develop all the infrastructure required,
>>so it might not be possible.
>>I will try to get DirectFB working on my system, I will need to
>>compile a custom kernel, so it will take a little bit of time.
>>Hardware acceleration (using modern versions of radeon, nvidia, intel
>>cards) seems out of the question though.
>
>
>
>
Can you give me your DirectFB compile flags (for X11)?
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