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x11: Store the GLX drawable in the surface

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Also, stop using a dummy window for unattached GL contexts and instead
use the display's leader surface.

Again, this mirrors EGL.
This commit is contained in:
Benjamin Otte 2021-06-29 23:45:50 +02:00
parent 1c55b32879
commit 215f792851
4 changed files with 52 additions and 72 deletions
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121
gdk/x11/gdkglcontext-glx.c
View File

@ -35,8 +35,6 @@ struct _GdkX11GLContextGLX
GdkX11GLContext parent_instance;
GLXContext glx_context;
GLXDrawable attached_drawable;
GLXDrawable unattached_drawable;
#ifdef HAVE_XDAMAGE
GLsync frame_fence;
@ -49,38 +47,45 @@ typedef struct _GdkX11GLContextClass GdkX11GLContextGLXClass;
typedef struct {
GdkDisplay *display;
GLXDrawable glx_drawable;
Window dummy_xwin;
GLXWindow dummy_glx;
guint32 last_frame_counter;
} DrawableInfo;
G_DEFINE_TYPE (GdkX11GLContextGLX, gdk_x11_gl_context_glx, GDK_TYPE_X11_GL_CONTEXT)
static GLXDrawable
gdk_x11_surface_get_glx_drawable (GdkSurface *surface)
{
GdkX11Surface *self = GDK_X11_SURFACE (surface);
GdkDisplay *display = gdk_surface_get_display (GDK_SURFACE (self));
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
if (self->glx_drawable)
return self->glx_drawable;
self->glx_drawable = glXCreateWindow (gdk_x11_display_get_xdisplay (display),
display_x11->glx_config,
gdk_x11_surface_get_xid (surface),
NULL);
return self->glx_drawable;
}
void
gdk_x11_surface_destroy_glx_drawable (GdkX11Surface *self)
{
if (self->glx_drawable == None)
return;
glXDestroyWindow (gdk_x11_display_get_xdisplay (gdk_surface_get_display (GDK_SURFACE (self))),
self->glx_drawable);
self->glx_drawable = None;
}
static void
drawable_info_free (gpointer data_)
{
DrawableInfo *data = data_;
Display *dpy;
gdk_x11_display_error_trap_push (data->display);
dpy = gdk_x11_display_get_xdisplay (data->display);
if (data->glx_drawable)
glXDestroyWindow (dpy, data->glx_drawable);
if (data->dummy_glx)
glXDestroyWindow (dpy, data->dummy_glx);
if (data->dummy_xwin)
XDestroyWindow (dpy, data->dummy_xwin);
gdk_x11_display_error_trap_pop_ignored (data->display);
g_slice_free (DrawableInfo, data);
g_slice_free (DrawableInfo, data_);
}
static DrawableInfo *
@ -123,6 +128,21 @@ maybe_wait_for_vblank (GdkDisplay *display,
}
}
static GLXDrawable
gdk_x11_gl_context_glx_get_drawable (GdkX11GLContextGLX *self)
{
GdkX11GLContext *context_x11 = GDK_X11_GL_CONTEXT (self);
GdkDrawContext *draw_context = GDK_DRAW_CONTEXT (self);
GdkSurface *surface;
if (context_x11->is_attached || gdk_draw_context_is_in_frame (draw_context))
surface = gdk_draw_context_get_surface (draw_context);
else
surface = GDK_X11_DISPLAY (gdk_draw_context_get_display (draw_context))->leader_gdk_surface;
return gdk_x11_surface_get_glx_drawable (surface);
}
static void
gdk_x11_gl_context_glx_end_frame (GdkDrawContext *draw_context,
cairo_region_t *painted)
@ -145,7 +165,7 @@ gdk_x11_gl_context_glx_end_frame (GdkDrawContext *draw_context,
info = get_glx_drawable_info (surface);
drawable = context_glx->attached_drawable;
drawable = gdk_x11_surface_get_glx_drawable (surface);
GDK_DISPLAY_NOTE (display, OPENGL,
g_message ("Flushing GLX buffers for drawable %lu (window: %lu), frame sync: %s",
@ -232,7 +252,7 @@ gdk_x11_gl_context_glx_get_damage (GdkGLContext *context)
shared_glx = GDK_X11_GL_CONTEXT_GLX (shared);
gdk_gl_context_make_current (shared);
glXQueryDrawable (dpy, shared_glx->attached_drawable,
glXQueryDrawable (dpy, gdk_x11_gl_context_glx_get_drawable (shared_glx),
GLX_BACK_BUFFER_AGE_EXT, &buffer_age);
switch (buffer_age)
@ -591,53 +611,13 @@ gdk_x11_gl_context_glx_realize (GdkGLContext *context,
info = get_glx_drawable_info (surface);
if (info == NULL)
{
XSetWindowAttributes attrs;
unsigned long mask;
gdk_x11_display_error_trap_push (display);
info = g_slice_new0 (DrawableInfo);
info->display = display;
info->last_frame_counter = 0;
attrs.override_redirect = True;
attrs.colormap = gdk_x11_display_get_window_colormap (display_x11);
attrs.border_pixel = 0;
mask = CWOverrideRedirect | CWColormap | CWBorderPixel;
info->dummy_xwin = XCreateWindow (dpy, DefaultRootWindow (dpy),
-100, -100, 1, 1,
0,
gdk_x11_display_get_window_depth (display_x11),
CopyFromParent,
gdk_x11_display_get_window_visual (display_x11),
mask,
&attrs);
XMapWindow(dpy, info->dummy_xwin);
info->glx_drawable = glXCreateWindow (dpy, display_x11->glx_config,
gdk_x11_surface_get_xid (surface),
NULL);
info->dummy_glx = glXCreateWindow (dpy, display_x11->glx_config, info->dummy_xwin, NULL);
if (gdk_x11_display_error_trap_pop (display))
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("Unable to create a GL context"));
drawable_info_free (info);
glXDestroyContext (dpy, context_glx->glx_context);
context_glx->glx_context = NULL;
return FALSE;
}
set_glx_drawable_info (surface, info);
}
context_glx->attached_drawable = info->glx_drawable;
context_glx->unattached_drawable = info->dummy_glx;
GDK_DISPLAY_NOTE (display, OPENGL,
g_message ("Realized GLX context[%p], %s, version: %d.%d",
context_glx->glx_context,
@ -889,10 +869,7 @@ gdk_x11_gl_context_glx_make_current (GdkDisplay *display,
}
context_x11 = GDK_X11_GL_CONTEXT (context);
if (context_x11->is_attached || gdk_draw_context_is_in_frame (GDK_DRAW_CONTEXT (context)))
drawable = context_glx->attached_drawable;
else
drawable = context_glx->unattached_drawable;
drawable = gdk_x11_gl_context_glx_get_drawable (context_glx);
GDK_DISPLAY_NOTE (display, OPENGL,
g_message ("Making GLX context %p current to drawable %lu",

1
gdk/x11/gdkglcontext-x11.h
View File

@ -80,6 +80,7 @@ typedef struct _GdkX11GLContextGLX GdkX11GLContextGLX;
gboolean gdk_x11_display_init_glx (GdkX11Display *display_x11,
Visual **out_visual,
int *out_depth);
void gdk_x11_surface_destroy_glx_drawable (GdkX11Surface *self);
GType gdk_x11_gl_context_glx_get_type (void) G_GNUC_CONST;
GdkX11GLContext * gdk_x11_gl_context_glx_new (GdkSurface *surface,

1
gdk/x11/gdksurface-x11.c
View File

@ -1361,6 +1361,7 @@ gdk_x11_surface_destroy (GdkSurface *surface,
if (!foreign_destroy)
{
gdk_x11_surface_destroy_egl_surface (impl);
gdk_x11_surface_destroy_glx_drawable (impl);
XDestroyWindow (GDK_SURFACE_XDISPLAY (surface), GDK_SURFACE_XID (surface));
}

1
gdk/x11/gdksurface-x11.h
View File

@ -88,6 +88,7 @@ struct _GdkX11Surface
cairo_surface_t *cairo_surface;
/* EGLSurface */ gpointer egl_surface;
/* GLXDrawable */ XID glx_drawable;
int abs_x;
int abs_y;