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/* GDK - The GIMP Drawing Kit
*
* gdkglcontext-win32.c: Win32 specific OpenGL wrappers
*
* Copyright © 2014 Emmanuele Bassi
* Copyright © 2014 Alexander Larsson
* Copyright © 2014 Chun-wei Fan
*
* 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 "gdkprivate-win32.h"
#include "gdksurface-win32.h"
#include "gdkglcontext-win32.h"
#include "gdkdisplay-win32.h"
#include "gdkwin32display.h"
#include "gdkwin32glcontext.h"
#include "gdkwin32misc.h"
#include "gdkwin32screen.h"
#include "gdkwin32surface.h"
#include "gdkglcontext.h"
#include "gdksurface.h"
#include <glib/gi18n-lib.h>
#include <cairo.h>
#include <epoxy/egl.h>
struct _GdkWin32GLContextEGL
{
GdkWin32GLContext parent_instance;
/* EGL (Angle) Context Items */
EGLContext egl_context;
guint do_frame_sync : 1;
};
typedef struct _GdkWin32GLContextClass GdkWin32GLContextEGLClass;
G_DEFINE_TYPE (GdkWin32GLContextEGL, gdk_win32_gl_context_egl, GDK_TYPE_WIN32_GL_CONTEXT)
static gboolean
is_egl_force_redraw (GdkSurface *surface)
{
/* We only need to call gdk_window_invalidate_rect () if necessary */
if (surface->gl_paint_context != NULL && gdk_gl_context_get_use_es (surface->gl_paint_context))
{
GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
return impl->egl_force_redraw_all;
}
return FALSE;
}
static void
reset_egl_force_redraw (GdkSurface *surface)
{
if (surface->gl_paint_context != NULL && gdk_gl_context_get_use_es (surface->gl_paint_context))
{
GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
if (impl->egl_force_redraw_all)
impl->egl_force_redraw_all = FALSE;
}
}
static void
gdk_win32_gl_context_egl_end_frame (GdkDrawContext *draw_context,
cairo_region_t *painted)
{
GdkGLContext *context = GDK_GL_CONTEXT (draw_context);
GdkWin32GLContextEGL *context_egl = GDK_WIN32_GL_CONTEXT_EGL (context);
GdkSurface *surface = gdk_gl_context_get_surface (context);
GdkDisplay *display = gdk_gl_context_get_display (context);
cairo_rectangle_int_t whole_window;
EGLSurface egl_surface;
GDK_DRAW_CONTEXT_CLASS (gdk_win32_gl_context_egl_parent_class)->end_frame (draw_context, painted);
gdk_gl_context_make_current (context);
whole_window =
(GdkRectangle) { 0, 0,
gdk_surface_get_width (surface),
gdk_surface_get_height (surface)
};
egl_surface = gdk_surface_get_egl_surface (surface);
if (is_egl_force_redraw (surface))
{
GdkRectangle rect = {0, 0, gdk_surface_get_width (surface), gdk_surface_get_height (surface)};
/* We need to do gdk_window_invalidate_rect() so that we don't get glitches after maximizing or
* restoring or using aerosnap
*/
gdk_surface_invalidate_rect (surface, &rect);
reset_egl_force_redraw (surface);
}
eglSwapBuffers (gdk_display_get_egl_display (display), egl_surface);
}
static void
gdk_win32_gl_context_egl_begin_frame (GdkDrawContext *draw_context,
gboolean prefers_high_depth,
cairo_region_t *update_area)
{
gdk_win32_surface_handle_queued_move_resize (draw_context);
GDK_DRAW_CONTEXT_CLASS (gdk_win32_gl_context_egl_parent_class)->begin_frame (draw_context, prefers_high_depth, update_area);
}
static void
gdk_win32_gl_context_egl_class_init (GdkWin32GLContextClass *klass)
{
GdkGLContextClass *context_class = GDK_GL_CONTEXT_CLASS(klass);
GdkDrawContextClass *draw_context_class = GDK_DRAW_CONTEXT_CLASS(klass);
context_class->backend_type = GDK_GL_EGL;
draw_context_class->begin_frame = gdk_win32_gl_context_egl_begin_frame;
draw_context_class->end_frame = gdk_win32_gl_context_egl_end_frame;
}
static void
gdk_win32_gl_context_egl_init (GdkWin32GLContextEGL *egl_context)
{
}
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