gtk2/gdk/mir/gdkmirglcontext.c
Emmanuele Bassi d066e7541e Remove GdkGLProfile
The existence of OpenGL implementations that do not provide the full
core profile compatibility because of reasons beyond the technical, like
llvmpipe not implementing floating point buffers, makes the existence of
GdkGLProfile and documenting the fact that we use core profiles a bit
harder.

Since we do not have any existing profile except the default, we can
remove the GdkGLProfile and its related API from GDK and GTK+, and sweep
the whole thing under the carpet, while we wait for an extension that
lets us ask for the most compatible profile possible.

https://bugzilla.gnome.org/show_bug.cgi?id=744407
2015-02-12 17:51:31 +00:00

179 lines
5.7 KiB
C

/* GDK - The GIMP Drawing Kit
*
* gdkmirglcontext.c: Mir specific OpenGL wrappers
*
* Copyright © 2014 Canonical Ltd
*
* 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 "gdkmir-private.h"
#include "gdkinternals.h"
#include "gdkintl.h"
G_DEFINE_TYPE (GdkMirGLContext, gdk_mir_gl_context, GDK_TYPE_GL_CONTEXT)
#define N_EGL_ATTRS 16
static gboolean
gdk_mir_gl_context_realize (GdkGLContext *context,
GError **error)
{
GdkMirGLContext *context_mir = GDK_MIR_GL_CONTEXT (context);
GdkDisplay *display = gdk_gl_context_get_display (context);
GdkGLContext *share = gdk_gl_context_get_shared_context (context);
EGLContext ctx;
EGLint context_attribs[N_EGL_ATTRS];
int major, minor, flags;
gboolean debug_bit, forward_bit;
int i = 0;
if (!_gdk_mir_display_init_egl_display (display))
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("No GL implementation is available"));
return FALSE;
}
gdk_gl_context_get_required_version (context, &major, &minor);
debug_bit = gdk_gl_context_get_debug_enabled (context);
forward_bit = gdk_gl_context_get_forward_compatible (context);
flags = 0;
if (debug_bit)
flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
if (forward_bit)
flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
/* We want a core profile */
context_attribs[i++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
context_attribs[i++] = EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
/* Specify the version */
context_attribs[i++] = EGL_CONTEXT_MAJOR_VERSION_KHR;
context_attribs[i++] = major;
context_attribs[i++] = EGL_CONTEXT_MINOR_VERSION_KHR;
context_attribs[i++] = minor;
/* Specify the flags */
context_attribs[i++] = EGL_CONTEXT_FLAGS_KHR;
context_attribs[i++] = flags;
context_attribs[i++] = EGL_NONE;
g_assert (i < N_EGL_ATTRS);
ctx = eglCreateContext (_gdk_mir_display_get_egl_display (display),
context_mir->egl_config,
share != NULL ? GDK_MIR_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 FALSE;
}
GDK_NOTE (OPENGL, g_print ("Created EGL context[%p]\n", ctx));
context_mir->egl_context = ctx;
return TRUE;
}
static void
gdk_mir_gl_context_end_frame (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);
GdkMirGLContext *context_mir = GDK_MIR_GL_CONTEXT (context);
EGLDisplay egl_display = _gdk_mir_display_get_egl_display (display);
EGLSurface egl_surface;
gdk_gl_context_make_current (context);
egl_surface = _gdk_mir_window_get_egl_surface (window,
context_mir->egl_config);
if (_gdk_mir_display_have_egl_swap_buffers_with_damage (display))
{
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 (egl_display, egl_surface, rects, n_rects);
g_free (rects);
}
else
{
eglSwapBuffers (egl_display, egl_surface);
}
}
static void
gdk_mir_gl_context_dispose (GObject *gobject)
{
GdkMirGLContext *context_mir = GDK_MIR_GL_CONTEXT (gobject);
if (context_mir->egl_context != NULL)
{
GdkGLContext *context = GDK_GL_CONTEXT (gobject);
GdkWindow *window = gdk_gl_context_get_window (context);
GdkDisplay *display = gdk_window_get_display (window);
EGLDisplay egl_display = _gdk_mir_display_get_egl_display (display);
if (eglGetCurrentContext () == context_mir->egl_context)
eglMakeCurrent (egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
GDK_NOTE (OPENGL, g_print ("Destroying EGL context\n"));
eglDestroyContext (egl_display, context_mir->egl_context);
context_mir->egl_context = NULL;
}
G_OBJECT_CLASS (gdk_mir_gl_context_parent_class)->dispose (gobject);
}
static void
gdk_mir_gl_context_class_init (GdkMirGLContextClass *klass)
{
GdkGLContextClass *context_class = GDK_GL_CONTEXT_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
context_class->realize = gdk_mir_gl_context_realize;
context_class->end_frame = gdk_mir_gl_context_end_frame;
gobject_class->dispose = gdk_mir_gl_context_dispose;
}
static void
gdk_mir_gl_context_init (GdkMirGLContext *self)
{
}