Re: [PATCH v3 9/9] virtio-gpu: Get EGL Display callback

["Alex Bennée" <alex.bennee@linaro.org>]

Antonio Caggiano <antonio.caggiano@collabora.com> writes:

> Implement get_egl_display callback for virglrenderer.
>
> Signed-off-by: Antonio Caggiano <antonio.caggiano@collabora.com>
> ---
>  hw/display/virtio-gpu-virgl.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c
> index 0f17bdddd0..0fd9ad8a3d 100644
> --- a/hw/display/virtio-gpu-virgl.c
> +++ b/hw/display/virtio-gpu-virgl.c
> @@ -18,6 +18,7 @@
>  #include "hw/virtio/virtio-gpu.h"
>  #include "hw/virtio/virtio-gpu-bswap.h"
>  #include "hw/virtio/virtio-iommu.h"
> +#include <epoxy/egl.h>
>  
>  #include <virglrenderer.h>
>  
> @@ -743,12 +744,18 @@ static int virgl_make_context_current(void *opaque, int scanout_idx,
>                                     qctx);
>  }
>  
> +static void *virgl_get_egl_display(void *opaque)
> +{
> +    return eglGetCurrentDisplay();
> +}
> +
>  static struct virgl_renderer_callbacks virtio_gpu_3d_cbs = {
> -    .version             = 1,
> +    .version             = 4,
>      .write_fence         = virgl_write_fence,
>      .create_gl_context   = virgl_create_context,
>      .destroy_gl_context  = virgl_destroy_context,
>      .make_current        = virgl_make_context_current,
> +    .get_egl_display     = virgl_get_egl_display,

This fails for me:

  FAILED: libcommon.fa.p/hw_display_virtio-gpu-virgl.c.o 
  cc -m64 -mcx16 -Ilibcommon.fa.p -I../../common-user/host/x86_64 -I../../linux-user/include/host/x86_64 -I../../linux-user/include -Idtc/libfdt -I../../dtc/libfdt -I/usr/include/capstone -I/usr/include/pixman-1 -I/usr/include/libpng16 -I/usr/include/spice-server -I/usr/include/spice-1 -I/usr/include/p11-kit-1 -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/gio-unix-2.0 -I/usr/include/slirp -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/dbus-1.0 -I/usr/lib/x86_64-linux-gnu/dbus-1.0/include -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/fribidi -I/usr/include/harfbuzz -I/usr/include/atk-1.0 -I/usr/include/uuid -I/usr/include/freetype2 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/vte-2.91 -I/usr/include/virgl -I/usr/include/cacard -I/usr/include/nss -I/usr/include/nspr -I/usr/include/PCSC -I/usr/include/libusb-1.0 -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /home/alex/lsrc/qemu.git/linux-headers -isystem linux-headers -iquote . -iquote /home/alex/lsrc/qemu.git -iquote /home/alex/lsrc/qemu.git/include -iquote /home/alex/lsrc/qemu.git/tcg/i386 -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno-common -fwrapv -Wundef -Wwrite-strings -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wmissing-format-attribute -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -D_REENTRANT -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600 -DNCURSES_WIDECHAR=1 -DSTRUCT_IOVEC_DEFINED -MD -MQ libcommon.fa.p/hw_display_virtio-gpu-virgl.c.o -MF libcommon.fa.p/hw_display_virtio-gpu-virgl.c.o.d -o libcommon.fa.p/hw_display_virtio-gpu-virgl.c.o -c ../../hw/display/virtio-gpu-virgl.c
  ../../hw/display/virtio-gpu-virgl.c:758:6: error: ‘struct virgl_renderer_callbacks’ has no member named ‘get_egl_display’
    758 |     .get_egl_display     = virgl_get_egl_display,
        |      ^~~~~~~~~~~~~~~
  ../../hw/display/virtio-gpu-virgl.c:758:28: error: initialization of ‘int (*)(void *)’ from incompatible pointer type ‘void * (*)(void *)’ [-Werror=incompatible-pointer-types]
    758 |     .get_egl_display     = virgl_get_egl_display,
        |                            ^~~~~~~~~~~~~~~~~~~~~
  ../../hw/display/virtio-gpu-virgl.c:758:28: note: (near initialization for ‘virtio_gpu_3d_cbs.get_drm_fd’)
  ../../hw/display/virtio-gpu-virgl.c: In function ‘virtio_gpu_virgl_init’:
  ../../hw/display/virtio-gpu-virgl.c:816:34: error: ‘VIRGL_RENDERER_VENUS’ undeclared (first use in this function); did you mean ‘VIRGL_RENDERER_USE_EGL’?
    816 |     ret = virgl_renderer_init(g, VIRGL_RENDERER_VENUS, &virtio_gpu_3d_cbs);
        |                                  ^~~~~~~~~~~~~~~~~~~~
        |                                  VIRGL_RENDERER_USE_EGL
  ../../hw/display/virtio-gpu-virgl.c:816:34: note: each undeclared identifier is reported only once for each function it appears in
  cc1: all warnings being treated as errors

I assume because I'm either missing a library or my distro version is
too old. Either way this needs to be caught at configure time and
#ifdef'd.


>  };
>  
>  static void virtio_gpu_print_stats(void *opaque)


-- 
Alex Bennée
Virtualisation Tech Lead @ Linaro