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gtk: add opengl support, using egl

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This adds opengl rendering support to the gtk ui, using egl.
It's off by default for now, use 'qemu -display gtk,gl=on'
to play with this.

Note that gtk got native opengl support with release 3.16.
There most likely will be a separate implementation for 3.16+,
using the native gtk opengl support.  This patch covers older
versions (and for the time being 3.16 too, hopefully without
rendering quirks).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2015-01-20 12:43:28 +01:00
parent 7ced9e9f6d
commit 97edf3bd5e
6 changed files with 253 additions and 17 deletions
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11
vl.c
View file

@ -2047,6 +2047,15 @@ static DisplayType select_display(const char *p)
} else {
goto invalid_gtk_args;
}
} else if (strstart(opts, ",gl=", &nextopt)) {
opts = nextopt;
if (strstart(opts, "on", &nextopt)) {
request_opengl = 1;
} else if (strstart(opts, "off", &nextopt)) {
request_opengl = 0;
} else {
goto invalid_gtk_args;
}
} else {
invalid_gtk_args:
fprintf(stderr, "Invalid GTK option string: %s\n", p);
@ -4012,7 +4021,7 @@ int main(int argc, char **argv, char **envp)
#if defined(CONFIG_GTK)
if (display_type == DT_GTK) {
early_gtk_display_init();
early_gtk_display_init(request_opengl);
}
#endif
#if defined(CONFIG_SDL)