forked from AuroraMiddleware/gtk
bca77b5505
Instead of using GL_BACK, use GL_BACK_LEFT, because the spec demands
this (many drivers don't).
Also move the call from the GDK backends into the GLContext code, as
this is a generic EGL issue (nvidia being the main driver in need of
this call, see 9c4c4eaaa1 for a longer
discussion).
Fixes #4402
146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
*
|
|
* gdkglcontext-egl.c: EGL-X11 specific wrappers
|
|
*
|
|
* SPDX-FileCopyrightText: 2014 Emmanuele Bassi
|
|
* SPDX-FileCopyrightText: 2021 GNOME Foundation
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.1-or-later
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "gdkglcontext-x11.h"
|
|
#include "gdkdisplay-x11.h"
|
|
#include "gdkprivate-x11.h"
|
|
#include "gdkscreen-x11.h"
|
|
|
|
#include "gdkx11display.h"
|
|
#include "gdkx11glcontext.h"
|
|
#include "gdkx11screen.h"
|
|
#include "gdkx11property.h"
|
|
#include <X11/Xatom.h>
|
|
|
|
#include "gdkprofilerprivate.h"
|
|
#include "gdkintl.h"
|
|
|
|
#include <cairo-xlib.h>
|
|
|
|
#include <epoxy/egl.h>
|
|
|
|
struct _GdkX11GLContextEGL
|
|
{
|
|
GdkX11GLContext parent_instance;
|
|
|
|
guint do_frame_sync : 1;
|
|
};
|
|
|
|
typedef struct _GdkX11GLContextClass GdkX11GLContextEGLClass;
|
|
|
|
G_DEFINE_TYPE (GdkX11GLContextEGL, gdk_x11_gl_context_egl, GDK_TYPE_X11_GL_CONTEXT)
|
|
|
|
/**
|
|
* gdk_x11_display_get_egl_display:
|
|
* @display: (type GdkX11Display): an X11 display
|
|
*
|
|
* Retrieves the EGL display connection object for the given GDK display.
|
|
*
|
|
* This function returns `NULL` if GDK is using GLX.
|
|
*
|
|
* Returns: (nullable): the EGL display object
|
|
*
|
|
* Since: 4.4
|
|
*/
|
|
gpointer
|
|
gdk_x11_display_get_egl_display (GdkDisplay *display)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_X11_DISPLAY (display), NULL);
|
|
|
|
return gdk_display_get_egl_display (display);
|
|
}
|
|
|
|
static gboolean
|
|
gdk_x11_gl_context_egl_make_current (GdkGLContext *context,
|
|
gboolean surfaceless)
|
|
{
|
|
GdkX11GLContextEGL *self = GDK_X11_GL_CONTEXT_EGL (context);
|
|
GdkDisplay *display = gdk_gl_context_get_display (context);
|
|
EGLDisplay egl_display = gdk_display_get_egl_display (display);
|
|
gboolean do_frame_sync = FALSE;
|
|
|
|
if (!GDK_GL_CONTEXT_CLASS (gdk_x11_gl_context_egl_parent_class)->make_current (context, surfaceless))
|
|
return FALSE;
|
|
|
|
if (surfaceless)
|
|
return TRUE;
|
|
|
|
/* If the WM is compositing there is no particular need to delay
|
|
* the swap when drawing on the offscreen, rendering to the screen
|
|
* happens later anyway, and its up to the compositor to sync that
|
|
* to the vblank. */
|
|
do_frame_sync = ! gdk_display_is_composited (display);
|
|
|
|
if (do_frame_sync != self->do_frame_sync)
|
|
{
|
|
self->do_frame_sync = do_frame_sync;
|
|
|
|
if (do_frame_sync)
|
|
eglSwapInterval (egl_display, 1);
|
|
else
|
|
eglSwapInterval (egl_display, 0);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gdk_x11_gl_context_egl_class_init (GdkX11GLContextEGLClass *klass)
|
|
{
|
|
GdkGLContextClass *context_class = GDK_GL_CONTEXT_CLASS (klass);
|
|
|
|
context_class->backend_type = GDK_GL_EGL;
|
|
|
|
context_class->make_current = gdk_x11_gl_context_egl_make_current;
|
|
}
|
|
|
|
static void
|
|
gdk_x11_gl_context_egl_init (GdkX11GLContextEGL *self)
|
|
{
|
|
self->do_frame_sync = TRUE;
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_display_get_egl_version:
|
|
* @display: (type GdkX11Display): a `GdkDisplay`
|
|
* @major: (out): return location for the EGL major version
|
|
* @minor: (out): return location for the EGL minor version
|
|
*
|
|
* Retrieves the version of the EGL implementation.
|
|
*
|
|
* Returns: %TRUE if EGL is available
|
|
*
|
|
* Since: 4.4
|
|
*/
|
|
gboolean
|
|
gdk_x11_display_get_egl_version (GdkDisplay *display,
|
|
int *major,
|
|
int *minor)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
|
|
|
|
if (!GDK_IS_X11_DISPLAY (display))
|
|
return FALSE;
|
|
|
|
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
|
|
|
|
if (gdk_display_get_egl_display (display) == NULL)
|
|
return FALSE;
|
|
|
|
if (major != NULL)
|
|
*major = display_x11->egl_version / 10;
|
|
if (minor != NULL)
|
|
*minor = display_x11->egl_version % 10;
|
|
|
|
return TRUE;
|
|
}
|