AuroraMiddleware/gtk
1
0
Fork 1
mirror of https://gitlab.gnome.org/GNOME/gtk.git synced 2024-11-05 16:20:10 +00:00
Code Issues Projects Releases Wiki Activity
d3aa9df876
gtk/gdk/wayland/gdkglcontext-wayland.c
Alexander Larsson fdeb4f8c16 gl: Make gdk_gl_context_make_current() return void 
Its not really reasonable to handle failures to make_current, it
basically only happens if you pass invalid arguments to it, and
thats not something we trap on similar things on the X drawing side.

If GL is not supported that should be handled by the context creation
failing, and anything going wrong after that is essentially a critical
(or an async X error).
2014-10-13 10:43:32 -04:00

428 lines
13 KiB
C
Raw Blame History

/* GDK - The GIMP Drawing Kit
*
* gdkglcontext-wayland.c: Wayland specific OpenGL wrappers
*
* Copyright © 2014 Emmanuele Bassi
* Copyright © 2014 Alexander Larsson
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gdkglcontext-wayland.h"
#include "gdkdisplay-wayland.h"
#include "gdkwaylanddisplay.h"
#include "gdkwaylandglcontext.h"
#include "gdkwaylandwindow.h"
#include "gdkprivate-wayland.h"
#include "gdkinternals.h"
#include "gdkintl.h"
G_DEFINE_TYPE (GdkWaylandGLContext, gdk_wayland_gl_context, GDK_TYPE_GL_CONTEXT)
static void
gdk_wayland_gl_context_update (GdkGLContext *context)
{
GdkWindow *window = gdk_gl_context_get_window (context);
int width, height;
gdk_gl_context_make_current (context);
width = gdk_window_get_width (window);
height = gdk_window_get_height (window);
GDK_NOTE (OPENGL, g_print ("Updating GL viewport size to { %d, %d } for window %p (context: %p)\n",
width, height,
window, context));
glViewport (0, 0, width, height);
}
void
gdk_wayland_window_invalidate_for_new_frame (GdkWindow *window,
cairo_region_t *update_area)
{
cairo_rectangle_int_t window_rect;
GdkDisplay *display = gdk_window_get_display (window);
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
GdkWaylandGLContext *context_wayland;
int buffer_age;
gboolean invalidate_all;
EGLSurface egl_surface;
/* Minimal update is ok if we're not drawing with gl */
if (window->gl_paint_context == NULL)
return;
context_wayland = GDK_WAYLAND_GL_CONTEXT (window->gl_paint_context);
buffer_age = 0;
egl_surface = gdk_wayland_window_get_egl_surface (window->impl_window,
context_wayland->egl_config);
if (display_wayland->have_egl_buffer_age)
{
gdk_gl_context_make_current (window->gl_paint_context);
eglQuerySurface (display_wayland->egl_display, egl_surface,
EGL_BUFFER_AGE_EXT, &buffer_age);
}
invalidate_all = FALSE;
if (buffer_age == 0 || buffer_age >= 4)
invalidate_all = TRUE;
else
{
if (buffer_age >= 2)
{
if (window->old_updated_area[0])
cairo_region_union (update_area, window->old_updated_area[0]);
else
invalidate_all = TRUE;
}
if (buffer_age >= 3)
{
if (window->old_updated_area[1])
cairo_region_union (update_area, window->old_updated_area[1]);
else
invalidate_all = TRUE;
}
}
if (invalidate_all)
{
window_rect.x = 0;
window_rect.y = 0;
window_rect.width = gdk_window_get_width (window);
window_rect.height = gdk_window_get_height (window);
/* If nothing else is known, repaint everything so that the back
buffer is fully up-to-date for the swapbuffer */
cairo_region_union_rectangle (update_area, &window_rect);
}
}
static void
gdk_wayland_gl_context_flush_buffer (GdkGLContext *context,
cairo_region_t *painted,
cairo_region_t *damage)
{
GdkWindow *window = gdk_gl_context_get_window (context);
GdkDisplay *display = gdk_window_get_display (window);
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
GdkWaylandGLContext *context_wayland = GDK_WAYLAND_GL_CONTEXT (context);
EGLSurface egl_surface;
gdk_gl_context_make_current (context);
egl_surface = gdk_wayland_window_get_egl_surface (window->impl_window,
context_wayland->egl_config);
// TODO: Use eglSwapBuffersWithDamageEXT if available
if (display_wayland->have_egl_swap_buffers_with_damage)
{
int i, j, n_rects = cairo_region_num_rectangles (damage);
EGLint *rects = g_new (EGLint, n_rects * 4);
cairo_rectangle_int_t rect;
int window_height = gdk_window_get_height (window);
for (i = 0, j = 0; i < n_rects; i++)
{
cairo_region_get_rectangle (damage, i, &rect);
rects[j++] = rect.x;
rects[j++] = window_height - rect.height - rect.y;
rects[j++] = rect.width;
rects[j++] = rect.height;
}
eglSwapBuffersWithDamageEXT (display_wayland->egl_display, egl_surface, rects, n_rects);
g_free (rects);
}
else
eglSwapBuffers (display_wayland->egl_display, egl_surface);
}
static void
gdk_wayland_gl_context_class_init (GdkWaylandGLContextClass *klass)
{
GdkGLContextClass *context_class = GDK_GL_CONTEXT_CLASS (klass);
context_class->update = gdk_wayland_gl_context_update;
context_class->flush_buffer = gdk_wayland_gl_context_flush_buffer;
}
static void
gdk_wayland_gl_context_init (GdkWaylandGLContext *self)
{
}
gboolean
gdk_wayland_display_init_gl (GdkDisplay *display)
{
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
EGLint major, minor;
EGLDisplay *dpy;
if (display_wayland->have_egl)
return TRUE;
dpy = eglGetDisplay ((EGLNativeDisplayType)display_wayland->wl_display);
if (dpy == NULL)
return FALSE;
if (!eglInitialize (dpy, &major, &minor))
return FALSE;
if (!eglBindAPI (EGL_OPENGL_API))
return FALSE;
display_wayland->egl_display = dpy;
display_wayland->egl_major_version = major;
display_wayland->egl_minor_version = minor;
display_wayland->have_egl = TRUE;
display_wayland->have_egl_khr_create_context =
epoxy_has_egl_extension (dpy, "EGL_KHR_create_context");
display_wayland->have_egl_buffer_age =
epoxy_has_egl_extension (dpy, "EGL_EXT_buffer_age");
display_wayland->have_egl_swap_buffers_with_damage =
epoxy_has_egl_extension (dpy, "EGL_EXT_swap_buffers_with_damage");
display_wayland->have_egl_surfaceless_context =
epoxy_has_egl_extension (dpy, "EGL_KHR_surfaceless_context");
GDK_NOTE (OPENGL,
g_print ("EGL API version %d.%d found\n"
" - Vendor: %s\n"
" - Version: %s\n"
" - Client APIs: %s\n"
" - Extensions:\n"
"\t%s\n"
,
display_wayland->egl_major_version,
display_wayland->egl_minor_version,
eglQueryString (dpy, EGL_VENDOR),
eglQueryString(dpy, EGL_VERSION),
eglQueryString(dpy, EGL_CLIENT_APIS),
eglQueryString(dpy, EGL_EXTENSIONS)));
return TRUE;
}
#define MAX_EGL_ATTRS 30
static gboolean
find_eglconfig_for_window (GdkWindow *window,
EGLConfig *egl_config_out,
GError **error)
{
GdkDisplay *display = gdk_window_get_display (window);
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
GdkVisual *visual = gdk_window_get_visual (window);
EGLint attrs[MAX_EGL_ATTRS];
EGLint count;
EGLConfig *configs;
gboolean use_rgba;
int i = 0;
attrs[i++] = EGL_SURFACE_TYPE;
attrs[i++] = EGL_WINDOW_BIT;
attrs[i++] = EGL_COLOR_BUFFER_TYPE;
attrs[i++] = EGL_RGB_BUFFER;
attrs[i++] = EGL_RED_SIZE;
attrs[i++] = gdk_visual_get_bits_per_rgb (visual);
attrs[i++] = EGL_GREEN_SIZE;
attrs[i++] = gdk_visual_get_bits_per_rgb (visual);
attrs[i++] = EGL_BLUE_SIZE;
attrs[i++] = gdk_visual_get_bits_per_rgb (visual);
use_rgba = (visual == gdk_screen_get_rgba_visual (gdk_display_get_default_screen (display)));
if (use_rgba)
{
attrs[i++] = EGL_ALPHA_SIZE;
attrs[i++] = 1;
}
else
{
attrs[i++] = EGL_ALPHA_SIZE;
attrs[i++] = 0;
}
attrs[i++] = EGL_NONE;
g_assert (i < MAX_EGL_ATTRS);
if (!eglChooseConfig (display_wayland->egl_display, attrs, NULL, 0, &count) || count < 1)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_UNSUPPORTED_FORMAT,
_("No available configurations for the given pixel format"));
return FALSE;
}
configs = g_new (EGLConfig, count);
if (!eglChooseConfig (display_wayland->egl_display, attrs, configs, count, &count) || count < 1)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_UNSUPPORTED_FORMAT,
_("No available configurations for the given pixel format"));
return FALSE;
}
/* Pick first valid configuration i guess? */
if (egl_config_out != NULL)
*egl_config_out = configs[0];
g_free (configs);
return TRUE;
}
GdkGLContext *
gdk_wayland_window_create_gl_context (GdkWindow *window,
gboolean attached,
GdkGLProfile profile,
GdkGLContext *share,
GError **error)
{
GdkDisplay *display = gdk_window_get_display (window);
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
GdkWaylandGLContext *context;
EGLContext ctx;
EGLConfig config;
int i;
EGLint context_attribs[3];
if (!gdk_wayland_display_init_gl (display))
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("No GL implementation is available"));
return NULL;
}
if (profile == GDK_GL_PROFILE_3_2_CORE &&
!display_wayland->have_egl_khr_create_context)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_UNSUPPORTED_PROFILE,
_("3.2 core GL profile is not available on EGL implementation"));
return NULL;
}
if (!find_eglconfig_for_window (window, &config, error))
return NULL;
i = 0;
if (profile == GDK_GL_PROFILE_3_2_CORE)
{
context_attribs[i++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
context_attribs[i++] = EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
}
context_attribs[i++] = EGL_NONE;
ctx = eglCreateContext (display_wayland->egl_display,
config,
share ? GDK_WAYLAND_GL_CONTEXT (share)->egl_context : EGL_NO_CONTEXT,
context_attribs);
if (ctx == NULL)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("Unable to create a GL context"));
return NULL;
}
GDK_NOTE (OPENGL,
g_print ("Created EGL context[%p]\n", ctx));
context = g_object_new (GDK_WAYLAND_TYPE_GL_CONTEXT,
"window", window,
"visual", gdk_window_get_visual (window),
NULL);
context->egl_config = config;
context->egl_context = ctx;
context->is_attached = attached;
return GDK_GL_CONTEXT (context);
}
void
gdk_wayland_display_destroy_gl_context (GdkDisplay *display,
GdkGLContext *context)
{
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
GdkWaylandGLContext *context_wayland = GDK_WAYLAND_GL_CONTEXT (context);
/* TODO: Unset as current if current? */
if (context_wayland->egl_context != NULL)
{
if (eglGetCurrentContext () == context_wayland->egl_context)
eglMakeCurrent(display_wayland->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
GDK_NOTE (OPENGL, g_print ("Destroying EGL context\n"));
eglDestroyContext (display_wayland->egl_display,
context_wayland->egl_context);
context_wayland->egl_context = NULL;
}
}
void
gdk_wayland_display_make_gl_context_current (GdkDisplay *display,
GdkGLContext *context)
{
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
GdkWaylandGLContext *context_wayland;
GdkWindow *window;
EGLSurface egl_surface;
if (context == NULL)
{
eglMakeCurrent(display_wayland->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
return;
}
context_wayland = GDK_WAYLAND_GL_CONTEXT (context);
window = gdk_gl_context_get_window (context);
if (context_wayland->is_attached)
egl_surface = gdk_wayland_window_get_egl_surface (window->impl_window, context_wayland->egl_config);
else
{
if (display_wayland->have_egl_surfaceless_context)
egl_surface = EGL_NO_SURFACE;
else
egl_surface = gdk_wayland_window_get_dummy_egl_surface (window->impl_window,
context_wayland->egl_config);
}
if (!eglMakeCurrent (display_wayland->egl_display, egl_surface,
egl_surface, context_wayland->egl_context))
g_critical ("eglMakeCurrent failed");
}
Reference in New Issue View Git Blame Copy Permalink