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Add wayland helper files.
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daec5ccc57
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184
gtk/src/gtk_wayland_helpers.cpp
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184
gtk/src/gtk_wayland_helpers.cpp
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@ -0,0 +1,184 @@
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#include <stdio.h>
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#include <string.h>
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#include "gtk_wayland_helpers.h"
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static void wl_global (void *data,
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struct wl_registry *wl_registry,
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uint32_t name,
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const char *interface,
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uint32_t version)
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{
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struct wlgl_helper *wl = (struct wlgl_helper *) data;
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if (!strcmp (interface, "wl_compositor"))
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wl->compositor = (struct wl_compositor *) wl_registry_bind (wl_registry, name, &wl_compositor_interface, 1);
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else if (!strcmp (interface, "wl_subcompositor"))
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wl->subcompositor = (struct wl_subcompositor *) wl_registry_bind (wl_registry, name, &wl_subcompositor_interface, 1);
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}
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static void wl_global_remove (void *data,
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struct wl_registry *wl_registry,
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uint32_t name)
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{
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}
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static const struct wl_registry_listener wl_registry_listener = {
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wl_global,
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wl_global_remove
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};
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wlgl_helper::wlgl_helper ()
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{
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display = NULL;
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registry = NULL;
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compositor = NULL;
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subcompositor = NULL;
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parent = NULL;
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child = NULL;
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subsurface = NULL;
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egl_display = NULL;
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egl_surface = NULL;
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egl_context = NULL;
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egl_config = NULL;
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egl_window = NULL;
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}
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wlgl_helper::~wlgl_helper ()
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{
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if (subsurface)
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wl_subsurface_destroy (subsurface);
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if (region)
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wl_region_destroy (region);
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if (child)
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wl_surface_destroy (child);
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if (egl_context)
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eglDestroyContext (egl_display, egl_context);
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if (egl_surface)
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eglDestroySurface (egl_display, egl_surface);
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if (egl_window)
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wl_egl_window_destroy (egl_window);
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}
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bool wlgl_helper::attach (GdkWindow *window)
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{
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int x, y, w, h;
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if (!GDK_IS_WAYLAND_WINDOW (window))
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return false;
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gdk_window = window;
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gdk_window_get_geometry (gdk_window, &x, &y, &w, &h);
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display = gdk_wayland_display_get_wl_display (gdk_window_get_display (gdk_window));
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parent = gdk_wayland_window_get_wl_surface (gdk_window);
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registry = wl_display_get_registry (display);
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wl_registry_add_listener (registry, &wl_registry_listener, this);
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wl_display_roundtrip (display);
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if (!compositor || !subcompositor)
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return false;
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child = wl_compositor_create_surface (compositor);
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region = wl_compositor_create_region (compositor);
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subsurface = wl_subcompositor_get_subsurface (subcompositor, child, parent);
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wl_surface_set_input_region (child, region);
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wl_subsurface_set_desync (subsurface);
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wl_subsurface_set_position (subsurface, x, y);
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return true;
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}
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bool wlgl_helper::create_egl_context (int width, int height)
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{
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int scale = gdk_window_get_scale_factor (gdk_window);
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EGLint surface_attribs[] = {
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EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
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EGL_RED_SIZE, 8,
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EGL_BLUE_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_NONE
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};
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EGLint context_attribs[] = {
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EGL_CONTEXT_OPENGL_PROFILE_MASK, EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT,
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EGL_NONE
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};
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EGLint num_configs = 0;
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if (!subsurface)
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return false;
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egl_display = eglGetDisplay ((EGLNativeDisplayType) display);
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eglInitialize (egl_display, NULL, NULL);
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if (!eglChooseConfig (egl_display, surface_attribs, &egl_config, 1, &num_configs))
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{
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printf ("Couldn't find matching config.\n");
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return false;
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}
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eglBindAPI (EGL_OPENGL_API);
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egl_window = wl_egl_window_create (child, width * scale, height * scale);
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if (!egl_window)
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{
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printf ("Couldn't create window.\n");
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return false;
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}
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egl_surface = eglCreateWindowSurface (egl_display, egl_config, (EGLNativeWindowType) egl_window, NULL);
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if (!egl_surface)
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{
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printf ("Couldn't create surface.\n");
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return false;
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}
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egl_context = eglCreateContext (egl_display, egl_config, EGL_NO_CONTEXT, context_attribs);
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if (!egl_context)
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{
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printf ("Couldn't create context.\n");
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return false;
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}
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return true;
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}
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void wlgl_helper::resize (int width, int height)
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{
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int x, y, w, h, scale;
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gdk_window_get_geometry (gdk_window, &x, &y, &w, &h);
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scale = gdk_window_get_scale_factor (gdk_window);
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wl_egl_window_resize (egl_window, w * scale, h * scale, 0, 0);
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wl_subsurface_set_position (subsurface, x, y);
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make_current ();
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}
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void wlgl_helper::swap_buffers ()
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{
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eglSwapBuffers (egl_display, egl_surface);
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wl_surface_commit (child);
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}
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void wlgl_helper::make_current ()
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{
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eglMakeCurrent (egl_display, egl_surface, egl_surface, egl_context);
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}
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void wlgl_helper::swap_interval (int frames)
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{
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eglSwapInterval (egl_display, frames);
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}
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35
gtk/src/gtk_wayland_helpers.h
Normal file
35
gtk/src/gtk_wayland_helpers.h
Normal file
@ -0,0 +1,35 @@
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#pragma once
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#include <gdk/gdkwayland.h>
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#include <wayland-egl.h>
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#include <epoxy/egl.h>
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struct wlgl_helper
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{
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wlgl_helper ();
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~wlgl_helper ();
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bool attach (GdkWindow *window);
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bool create_egl_context (int width, int height);
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void resize (int width, int height);
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void swap_buffers ();
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void swap_interval (int frames);
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void make_current ();
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GdkWindow *gdk_window;
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struct wl_display *display;
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struct wl_registry *registry;
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struct wl_compositor *compositor;
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struct wl_subcompositor *subcompositor;
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struct wl_surface *parent;
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struct wl_surface *child;
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struct wl_subsurface *subsurface;
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struct wl_region *region;
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EGLDisplay egl_display;
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EGLSurface egl_surface;
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EGLContext egl_context;
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EGLConfig egl_config;
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wl_egl_window *egl_window;
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};
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