[gtk/wip/otte/gleanup: 25/27] x11: Use single GLX fbconfig and store it in the display
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/wip/otte/gleanup: 25/27] x11: Use single GLX fbconfig and store it in the display
- Date: Wed, 30 Jun 2021 03:06:19 +0000 (UTC)
commit 2ddb2785a64b985365d5f3a0aa81cf3612e9d6e4
Author: Benjamin Otte <otte redhat com>
Date: Tue Jun 29 22:10:48 2021 +0200
x11: Use single GLX fbconfig and store it in the display
This mirrors the code for the EGL config.
gdk/x11/gdkdisplay-x11.h | 3 +-
gdk/x11/gdkglcontext-glx.c | 255 ++++++++++++++-------------------------------
gdk/x11/gdkglcontext-x11.c | 4 +-
3 files changed, 83 insertions(+), 179 deletions(-)
---
diff --git a/gdk/x11/gdkdisplay-x11.h b/gdk/x11/gdkdisplay-x11.h
index 977c4ac4ac..4f27d28f09 100644
--- a/gdk/x11/gdkdisplay-x11.h
+++ b/gdk/x11/gdkdisplay-x11.h
@@ -132,6 +132,7 @@ struct _GdkX11Display
#endif
/* GLX information */
+ /* GLXFBConfig */ gpointer glx_config;
int glx_version;
int glx_error_base;
int glx_event_base;
@@ -148,8 +149,6 @@ struct _GdkX11Display
guint server_time_is_monotonic_time : 1;
- guint have_glx : 1;
-
/* GLX extensions we check */
guint has_glx_swap_interval : 1;
guint has_glx_create_context : 1;
diff --git a/gdk/x11/gdkglcontext-glx.c b/gdk/x11/gdkglcontext-glx.c
index a8c0eaf013..ad08c1fcb3 100644
--- a/gdk/x11/gdkglcontext-glx.c
+++ b/gdk/x11/gdkglcontext-glx.c
@@ -35,7 +35,6 @@ struct _GdkX11GLContextGLX
GdkX11GLContext parent_instance;
GLXContext glx_context;
- GLXFBConfig glx_config;
GLXDrawable attached_drawable;
GLXDrawable unattached_drawable;
@@ -265,15 +264,6 @@ gdk_x11_gl_context_glx_get_damage (GdkGLContext *context)
return GDK_GL_CONTEXT_CLASS (gdk_x11_gl_context_glx_parent_class)->get_damage (context);
}
-static XVisualInfo *
-find_xvisinfo_for_fbconfig (GdkDisplay *display,
- GLXFBConfig config)
-{
- Display *dpy = gdk_x11_display_get_xdisplay (display);
-
- return glXGetVisualFromFBConfig (dpy, config);
-}
-
static GLXContext
create_gl3_context (GdkDisplay *display,
GLXFBConfig config,
@@ -492,7 +482,6 @@ gdk_x11_gl_context_glx_realize (GdkGLContext *context,
GdkX11Display *display_x11;
GdkDisplay *display;
GdkX11GLContextGLX *context_glx;
- XVisualInfo *xvisinfo;
Display *dpy;
DrawableInfo *info;
GdkGLContext *share;
@@ -547,7 +536,7 @@ gdk_x11_gl_context_glx_realize (GdkGLContext *context,
if (legacy_bit && !GDK_X11_DISPLAY (display)->has_glx_create_context)
{
GDK_DISPLAY_NOTE (display, OPENGL, g_message ("Creating legacy GL context on request"));
- context_glx->glx_context = create_legacy_context (display, context_glx->glx_config, share ? share :
shared_data_context);
+ context_glx->glx_context = create_legacy_context (display, display_x11->glx_config, share ? share :
shared_data_context);
}
else
{
@@ -571,7 +560,7 @@ gdk_x11_gl_context_glx_realize (GdkGLContext *context,
GDK_DISPLAY_NOTE (display, OPENGL, g_message ("Creating GL3 context"));
context_glx->glx_context = create_gl3_context (display,
- context_glx->glx_config,
+ display_x11->glx_config,
share ? share : shared_data_context,
profile, flags, major, minor);
@@ -579,7 +568,7 @@ gdk_x11_gl_context_glx_realize (GdkGLContext *context,
if (context_glx->glx_context == NULL)
{
GDK_DISPLAY_NOTE (display, OPENGL, g_message ("Creating fallback legacy context"));
- context_glx->glx_context = create_legacy_context (display, context_glx->glx_config, share ? share
: shared_data_context);
+ context_glx->glx_context = create_legacy_context (display, display_x11->glx_config, share ? share
: shared_data_context);
legacy_bit = TRUE;
es_bit = FALSE;
}
@@ -599,8 +588,6 @@ gdk_x11_gl_context_glx_realize (GdkGLContext *context,
/* Ensure that any other context is created with an ES bit set */
gdk_gl_context_set_use_es (context, es_bit);
- xvisinfo = find_xvisinfo_for_fbconfig (display, context_glx->glx_config);
-
info = get_glx_drawable_info (surface);
if (info == NULL)
{
@@ -614,23 +601,23 @@ gdk_x11_gl_context_glx_realize (GdkGLContext *context,
info->last_frame_counter = 0;
attrs.override_redirect = True;
- attrs.colormap = XCreateColormap (dpy, DefaultRootWindow (dpy), xvisinfo->visual, AllocNone);
+ 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,
- xvisinfo->depth,
+ gdk_x11_display_get_window_depth (display_x11),
CopyFromParent,
- xvisinfo->visual,
+ gdk_x11_display_get_window_visual (display_x11),
mask,
&attrs);
XMapWindow(dpy, info->dummy_xwin);
- info->glx_drawable = glXCreateWindow (dpy, context_glx->glx_config,
+ info->glx_drawable = glXCreateWindow (dpy, display_x11->glx_config,
gdk_x11_surface_get_xid (surface),
NULL);
- info->dummy_glx = glXCreateWindow (dpy, context_glx->glx_config, info->dummy_xwin, NULL);
+ info->dummy_glx = glXCreateWindow (dpy, display_x11->glx_config, info->dummy_xwin, NULL);
if (gdk_x11_display_error_trap_pop (display))
{
@@ -638,7 +625,6 @@ gdk_x11_gl_context_glx_realize (GdkGLContext *context,
GDK_GL_ERROR_NOT_AVAILABLE,
_("Unable to create a GL context"));
- XFree (xvisinfo);
drawable_info_free (info);
glXDestroyContext (dpy, context_glx->glx_context);
context_glx->glx_context = NULL;
@@ -649,8 +635,6 @@ gdk_x11_gl_context_glx_realize (GdkGLContext *context,
set_glx_drawable_info (surface, info);
}
- XFree (xvisinfo);
-
context_glx->attached_drawable = info->glx_drawable;
context_glx->unattached_drawable = info->dummy_glx;
@@ -739,21 +723,37 @@ gdk_x11_gl_context_glx_init (GdkX11GLContextGLX *self)
{
}
+static gboolean
+visual_is_rgba (XVisualInfo *visinfo)
+{
+ return
+ visinfo->depth == 32 &&
+ visinfo->visual->red_mask == 0xff0000 &&
+ visinfo->visual->green_mask == 0x00ff00 &&
+ visinfo->visual->blue_mask == 0x0000ff;
+}
+
#define MAX_GLX_ATTRS 30
-static gboolean
-find_fbconfig (GdkDisplay *display,
- GLXFBConfig *fb_config_out,
- GError **error)
+static void
+gdk_x11_display_create_glx_config (GdkX11Display *self,
+ Visual **out_visual,
+ int *out_depth)
{
- static int attrs[MAX_GLX_ATTRS];
+ GdkDisplay *display = GDK_DISPLAY (self);
Display *dpy = gdk_x11_display_get_xdisplay (display);
+ int attrs[MAX_GLX_ATTRS];
GLXFBConfig *configs;
- int n_configs, i;
- gboolean retval = FALSE;
- VisualID xvisual_id = XVisualIDFromVisual (gdk_x11_display_get_window_visual (GDK_X11_DISPLAY (display)));
+ int count;
+ enum {
+ NO_VISUAL_FOUND,
+ WITH_MULTISAMPLING,
+ WITH_STENCIL_AND_DEPTH_BUFFER,
+ NO_ALPHA,
+ NO_ALPHA_VISUAL
+ } best_features;
+ int i = 0;
- i = 0;
attrs[i++] = GLX_DRAWABLE_TYPE;
attrs[i++] = GLX_WINDOW_BIT;
@@ -769,193 +769,96 @@ find_fbconfig (GdkDisplay *display,
attrs[i++] = 1;
attrs[i++] = GLX_BLUE_SIZE;
attrs[i++] = 1;
-
- if (gdk_display_is_rgba (display))
- {
- attrs[i++] = GLX_ALPHA_SIZE;
- attrs[i++] = 1;
- }
- else
- {
- attrs[i++] = GLX_ALPHA_SIZE;
- attrs[i++] = GLX_DONT_CARE;
- }
+ attrs[i++] = GLX_ALPHA_SIZE;
+ attrs[i++] = 1;
attrs[i++] = None;
-
g_assert (i < MAX_GLX_ATTRS);
- configs = glXChooseFBConfig (dpy, DefaultScreen (dpy), attrs, &n_configs);
- if (configs == NULL || n_configs == 0)
- {
- g_set_error_literal (error, GDK_GL_ERROR,
- GDK_GL_ERROR_UNSUPPORTED_FORMAT,
- _("No available configurations for the given pixel format"));
- return FALSE;
- }
-
- for (i = 0; i < n_configs; i++)
- {
- XVisualInfo *visinfo;
-
- visinfo = glXGetVisualFromFBConfig (dpy, configs[i]);
- if (visinfo == NULL)
- continue;
-
- if (visinfo->visualid != xvisual_id)
- {
- XFree (visinfo);
- continue;
- }
-
- if (fb_config_out != NULL)
- *fb_config_out = configs[i];
-
- XFree (visinfo);
- retval = TRUE;
- goto out;
- }
-
- g_set_error (error, GDK_GL_ERROR,
- GDK_GL_ERROR_UNSUPPORTED_FORMAT,
- _("No available configurations for the given RGBA pixel format"));
-
-out:
- XFree (configs);
-
- return retval;
-}
-
-#undef MAX_GLX_ATTRS
-
-static gboolean
-visual_is_rgba (XVisualInfo *visinfo)
-{
- return
- visinfo->depth == 32 &&
- visinfo->visual->red_mask == 0xff0000 &&
- visinfo->visual->green_mask == 0x00ff00 &&
- visinfo->visual->blue_mask == 0x0000ff;
-}
-
-static gboolean
-gdk_x11_display_select_visual_for_glx (GdkX11Display *display_x11,
- Visual **out_visual,
- int *out_depth)
-{
- GdkDisplay *display = GDK_DISPLAY (display_x11);
- Display *dpy;
- XVisualInfo visual_template, *visual_list;
- int i, n_visuals, best;
- enum {
- NO_VISUAL_FOUND,
- WITH_MULTISAMPLING,
- WITH_STENCIL_AND_DEPTH_BUFFER,
- NO_ALPHA,
- NO_ALPHA_VISUAL
- } best_features;
-
- dpy = gdk_x11_display_get_xdisplay (display);
-
- visual_template.screen = display_x11->screen->screen_num;
- visual_list = XGetVisualInfo (dpy, VisualScreenMask, &visual_template, &n_visuals);
- if (visual_list == NULL)
- return FALSE;
+ configs = glXChooseFBConfig (dpy, DefaultScreen (dpy), attrs, &count);
+ if (configs == NULL || count == 0)
+ return;
- best = -1;
best_features = NO_VISUAL_FOUND;
- for (i = 0; i < n_visuals; i++)
+ for (i = 0; i < count; i++)
{
+ XVisualInfo *visinfo;
int tmp;
- if (glXGetConfig (dpy, &visual_list[i], GLX_USE_GL, &tmp) != 0 || tmp != True ||
- glXGetConfig (dpy, &visual_list[i], GLX_DOUBLEBUFFER, &tmp) != 0 || tmp != True ||
- glXGetConfig (dpy, &visual_list[i], GLX_STEREO, &tmp) != 0 || tmp != False ||
- (display_x11->has_glx_visual_rating &&
- (glXGetConfig (dpy, &visual_list[i], GLX_VISUAL_CAVEAT_EXT, &tmp) != 0 || tmp != GLX_NONE_EXT)))
+ visinfo = glXGetVisualFromFBConfig (dpy, configs[i]);
+ if (visinfo == NULL)
continue;
- if (display_x11->has_glx_multisample &&
- (glXGetConfig (dpy, &visual_list[i], GLX_SAMPLE_BUFFERS_ARB, &tmp) != 0 || tmp != 0))
+ if (glXGetFBConfigAttrib (dpy, configs[i], GLX_SAMPLE_BUFFERS_ARB, &tmp) != Success || tmp != 0)
{
+ GDK_NOTE (OPENGL, g_print ("config %u for visual 0x%lX has multisampling\n", i,
visinfo->visualid));
if (best_features < WITH_MULTISAMPLING)
{
best_features = WITH_MULTISAMPLING;
- best = i;
+ *out_visual = visinfo->visual;
+ *out_depth = visinfo->depth;
+ self->glx_config = configs[i];
}
+ XFree (visinfo);
continue;
}
- if (glXGetConfig (dpy, &visual_list[i], GLX_DEPTH_SIZE, &tmp) != 0 || tmp != 0 ||
- glXGetConfig (dpy, &visual_list[i], GLX_STENCIL_SIZE, &tmp) != 0 || tmp != 0)
+ if (glXGetFBConfigAttrib (dpy, configs[i], GLX_DEPTH_SIZE, &tmp) != Success || tmp != 0 ||
+ glXGetFBConfigAttrib (dpy, configs[i], GLX_STENCIL_SIZE, &tmp) != Success || tmp != 0)
{
+ GDK_NOTE (OPENGL, g_print ("config %u for visual 0x%lX has a stencil or depth buffer\n", i,
visinfo->visualid));
if (best_features < WITH_STENCIL_AND_DEPTH_BUFFER)
{
best_features = WITH_STENCIL_AND_DEPTH_BUFFER;
- best = i;
- }
- continue;
- }
-
- if (glXGetConfig (dpy, &visual_list[i], GLX_ALPHA_SIZE, &tmp) != 0 || tmp == 0)
- {
- if (best_features < NO_ALPHA)
- {
- best_features = NO_ALPHA;
- best = i;
+ *out_visual = visinfo->visual;
+ *out_depth = visinfo->depth;
+ self->glx_config = configs[i];
}
+ XFree (visinfo);
continue;
}
-
- if (!visual_is_rgba (&visual_list[i]))
+
+ if (!visual_is_rgba (visinfo))
{
+ GDK_NOTE (OPENGL, g_print ("config %u for visual 0x%lX has no RGBA Visual\n", i,
visinfo->visualid));
if (best_features < NO_ALPHA_VISUAL)
{
best_features = NO_ALPHA_VISUAL;
- best = i;
+ *out_visual = visinfo->visual;
+ *out_depth = visinfo->depth;
+ self->glx_config = configs[i];
}
+ XFree (visinfo);
continue;
}
+ GDK_NOTE (OPENGL, g_print ("config %u for visual 0x%lX is the perfect choice\n", i,
visinfo->visualid));
/* everything is perfect */
- best = i;
+ *out_visual = visinfo->visual;
+ *out_depth = visinfo->depth;
+ self->glx_config = configs[i];
+ XFree (visinfo);
break;
}
- if (best_features == NO_VISUAL_FOUND)
- {
- XFree (visual_list);
- return FALSE;
- }
-
- *out_visual = visual_list[best].visual;
- *out_depth = visual_list[best].depth;
-
- XFree (visual_list);
- return TRUE;
+ XFree (configs);
}
+#undef MAX_GLX_ATTRS
+
GdkX11GLContext *
gdk_x11_gl_context_glx_new (GdkSurface *surface,
gboolean attached,
GdkGLContext *share,
GError **error)
{
- GdkDisplay *display;
GdkX11GLContextGLX *context;
- GLXFBConfig config;
- display = gdk_surface_get_display (surface);
- if (!find_fbconfig (display, &config, error))
- return NULL;
-
- context = g_object_new (GDK_TYPE_X11_GL_CONTEXT_GLX,
- "surface", surface,
- "shared-context", share,
- NULL);
-
- context->glx_config = config;
+ return g_object_new (GDK_TYPE_X11_GL_CONTEXT_GLX,
+ "surface", surface,
+ "shared-context", share,
+ NULL);
return GDK_X11_GL_CONTEXT (context);
}
@@ -1045,7 +948,7 @@ gdk_x11_display_get_glx_version (GdkDisplay *display,
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
- if (!display_x11->have_glx)
+ if (display_x11->glx_config == NULL)
return FALSE;
if (major != NULL)
@@ -1088,8 +991,6 @@ gdk_x11_display_init_glx (GdkX11Display *display_x11,
screen_num = display_x11->screen->screen_num;
- display_x11->have_glx = TRUE;
-
display_x11->glx_version = epoxy_glx_version (dpy, screen_num);
display_x11->glx_error_base = error_base;
display_x11->glx_event_base = event_base;
@@ -1150,6 +1051,10 @@ gdk_x11_display_init_glx (GdkX11Display *display_x11,
XFree (data);
}
+ gdk_x11_display_create_glx_config (display_x11, out_visual, out_depth);
+ if (display_x11->glx_config == NULL)
+ return FALSE;
+
GDK_DISPLAY_NOTE (display, OPENGL,
g_message ("GLX version %d.%d found\n"
" - Vendor: %s\n"
@@ -1176,5 +1081,5 @@ gdk_x11_display_init_glx (GdkX11Display *display_x11,
display_x11->has_glx_multisample ? "yes" : "no",
display_x11->has_glx_visual_rating ? "yes" : "no"));
- return gdk_x11_display_select_visual_for_glx (display_x11, out_visual, out_depth);
+ return TRUE;
}
diff --git a/gdk/x11/gdkglcontext-x11.c b/gdk/x11/gdkglcontext-x11.c
index 7d618c5b7c..e4e24c88ab 100644
--- a/gdk/x11/gdkglcontext-x11.c
+++ b/gdk/x11/gdkglcontext-x11.c
@@ -68,7 +68,7 @@ gdk_x11_surface_create_gl_context (GdkSurface *surface,
if (display_x11->egl_display)
context = gdk_x11_gl_context_egl_new (surface, attached, share, error);
- else if (display_x11->have_glx)
+ else if (display_x11->glx_config != NULL)
context = gdk_x11_gl_context_glx_new (surface, attached, share, error);
else
{
@@ -94,7 +94,7 @@ gdk_x11_display_make_gl_context_current (GdkDisplay *display,
if (display_x11->egl_display)
return gdk_x11_gl_context_egl_make_current (display, context);
- else if (display_x11->have_glx)
+ else if (display_x11->glx_config)
return gdk_x11_gl_context_glx_make_current (display, context);
else
g_assert_not_reached ();
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