forked from AuroraMiddleware/gtk
143 lines
4.4 KiB
C
143 lines
4.4 KiB
C
/* GDK - The GIMP Drawing Kit
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*
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* gdkglcontext-win32.c: Win32 specific OpenGL wrappers
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*
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* Copyright © 2014 Emmanuele Bassi
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* Copyright © 2014 Alexander Larsson
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* Copyright © 2014 Chun-wei Fan
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gdkprivate-win32.h"
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#include "gdksurface-win32.h"
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#include "gdkglcontext-win32.h"
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#include "gdkdisplay-win32.h"
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#include "gdkwin32display.h"
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#include "gdkwin32glcontext.h"
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#include "gdkwin32misc.h"
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#include "gdkwin32screen.h"
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#include "gdkwin32surface.h"
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#include "gdkglcontext.h"
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#include "gdksurface.h"
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#include <glib/gi18n-lib.h>
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#include <cairo.h>
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#include <epoxy/egl.h>
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struct _GdkWin32GLContextEGL
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{
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GdkWin32GLContext parent_instance;
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/* EGL (Angle) Context Items */
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EGLContext egl_context;
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guint do_frame_sync : 1;
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};
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typedef struct _GdkWin32GLContextClass GdkWin32GLContextEGLClass;
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G_DEFINE_TYPE (GdkWin32GLContextEGL, gdk_win32_gl_context_egl, GDK_TYPE_WIN32_GL_CONTEXT)
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static gboolean
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is_egl_force_redraw (GdkSurface *surface)
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{
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/* We only need to call gdk_window_invalidate_rect () if necessary */
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if (surface->gl_paint_context != NULL && gdk_gl_context_get_use_es (surface->gl_paint_context))
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{
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GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
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return impl->egl_force_redraw_all;
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}
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return FALSE;
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}
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static void
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reset_egl_force_redraw (GdkSurface *surface)
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{
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if (surface->gl_paint_context != NULL && gdk_gl_context_get_use_es (surface->gl_paint_context))
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{
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GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
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if (impl->egl_force_redraw_all)
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impl->egl_force_redraw_all = FALSE;
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}
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}
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static void
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gdk_win32_gl_context_egl_end_frame (GdkDrawContext *draw_context,
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cairo_region_t *painted)
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{
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GdkGLContext *context = GDK_GL_CONTEXT (draw_context);
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GdkWin32GLContextEGL *context_egl = GDK_WIN32_GL_CONTEXT_EGL (context);
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GdkSurface *surface = gdk_gl_context_get_surface (context);
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GdkDisplay *display = gdk_gl_context_get_display (context);
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cairo_rectangle_int_t whole_window;
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EGLSurface egl_surface;
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GDK_DRAW_CONTEXT_CLASS (gdk_win32_gl_context_egl_parent_class)->end_frame (draw_context, painted);
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gdk_gl_context_make_current (context);
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whole_window =
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(GdkRectangle) { 0, 0,
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gdk_surface_get_width (surface),
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gdk_surface_get_height (surface)
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};
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egl_surface = gdk_surface_get_egl_surface (surface);
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if (is_egl_force_redraw (surface))
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{
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GdkRectangle rect = {0, 0, gdk_surface_get_width (surface), gdk_surface_get_height (surface)};
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/* We need to do gdk_window_invalidate_rect() so that we don't get glitches after maximizing or
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* restoring or using aerosnap
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*/
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gdk_surface_invalidate_rect (surface, &rect);
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reset_egl_force_redraw (surface);
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}
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eglSwapBuffers (gdk_display_get_egl_display (display), egl_surface);
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}
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static void
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gdk_win32_gl_context_egl_begin_frame (GdkDrawContext *draw_context,
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gboolean prefers_high_depth,
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cairo_region_t *update_area)
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{
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gdk_win32_surface_handle_queued_move_resize (draw_context);
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GDK_DRAW_CONTEXT_CLASS (gdk_win32_gl_context_egl_parent_class)->begin_frame (draw_context, prefers_high_depth, update_area);
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}
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static void
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gdk_win32_gl_context_egl_class_init (GdkWin32GLContextClass *klass)
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{
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GdkGLContextClass *context_class = GDK_GL_CONTEXT_CLASS(klass);
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GdkDrawContextClass *draw_context_class = GDK_DRAW_CONTEXT_CLASS(klass);
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context_class->backend_type = GDK_GL_EGL;
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draw_context_class->begin_frame = gdk_win32_gl_context_egl_begin_frame;
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draw_context_class->end_frame = gdk_win32_gl_context_egl_end_frame;
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}
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static void
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gdk_win32_gl_context_egl_init (GdkWin32GLContextEGL *egl_context)
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{
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}
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