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RetroArch/gfx/drivers_context/wayland_ctx.c
zoltanvb fd04c8ca57
Rebase of wakira's wp_fractional_scale_v1 support (#15965) 
A rebase of earlier PR https://github.com/libretro/RetroArch/pull/15355
No changes added (except for one log).
2023-11-30 03:29:38 -08:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <unistd.h>
#include <wayland-client.h>
#include <wayland-cursor.h>
#include <string/stdstring.h>
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#include "../common/wayland_common.h"
#include "../../frontend/frontend_driver.h"
#include "../../input/common/wayland_common.h"
#include "../../input/input_driver.h"
#include "../../input/input_keymaps.h"
#include "../../verbosity.h"
/* Generated from idle-inhibit-unstable-v1.xml */
#include "../common/wayland/idle-inhibit-unstable-v1.h"
/* Generated from xdg-shell.xml */
#include "../common/wayland/xdg-shell.h"
/* Generated from xdg-decoration-unstable-v1.h */
#include "../common/wayland/xdg-decoration-unstable-v1.h"
#ifdef HAVE_EGL
#include <wayland-egl.h>
#include <poll.h>
#include "../common/egl_common.h"
#endif
#ifndef EGL_OPENGL_ES3_BIT_KHR
#define EGL_OPENGL_ES3_BIT_KHR 0x0040
#endif
#ifndef EGL_PLATFORM_WAYLAND_KHR
#define EGL_PLATFORM_WAYLAND_KHR 0x31D8
#endif
static enum gfx_ctx_api wl_api = GFX_CTX_NONE;
/* Shell surface callbacks. */
static void xdg_toplevel_handle_configure(void *data,
struct xdg_toplevel *toplevel,
int32_t width, int32_t height, struct wl_array *states)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
xdg_toplevel_handle_configure_common(wl, toplevel, width, height, states);
#ifdef HAVE_EGL
if (wl->win)
wl_egl_window_resize(wl->win,
wl->buffer_width,
wl->buffer_height,
0, 0);
else
wl->win = wl_egl_window_create(wl->surface,
wl->buffer_width,
wl->buffer_height);
#endif
wl->configured = false;
}
static void gfx_ctx_wl_destroy_resources(gfx_ctx_wayland_data_t *wl)
{
if (!wl)
return;
#ifdef HAVE_EGL
egl_destroy(&wl->egl);
if (wl->win)
wl_egl_window_destroy(wl->win);
#endif
gfx_ctx_wl_destroy_resources_common(wl);
#ifdef HAVE_EGL
wl->win = NULL;
#endif
}
static void gfx_ctx_wl_check_window(void *data, bool *quit,
bool *resize, unsigned *width, unsigned *height)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
gfx_ctx_wl_check_window_common(wl, gfx_ctx_wl_get_video_size_common, quit, resize, width, height);
}
static bool gfx_ctx_wl_set_resize(void *data, unsigned width, unsigned height)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
wl->last_buffer_scale = wl->buffer_scale;
wl->last_fractional_scale_num = wl->fractional_scale_num;
if (!wl->fractional_scale)
wl_surface_set_buffer_scale(wl->surface, wl->buffer_scale);
#ifdef HAVE_EGL
wl_egl_window_resize(wl->win, width, height, 0, 0);
#endif
return true;
}
#ifdef HAVE_LIBDECOR_H
static void
libdecor_frame_handle_configure(struct libdecor_frame *frame,
struct libdecor_configuration *configuration, void *data)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
libdecor_frame_handle_configure_common(frame, configuration, wl);
#ifdef HAVE_EGL
if (wl->win)
wl_egl_window_resize(wl->win,
wl->buffer_width,
wl->buffer_height,
0, 0);
else
wl->win = wl_egl_window_create(
wl->surface,
wl->buffer_width,
wl->buffer_height);
#endif
wl->configured = false;
}
#endif
static const toplevel_listener_t toplevel_listener = {
#ifdef HAVE_LIBDECOR_H
.libdecor_frame_interface = {
libdecor_frame_handle_configure,
libdecor_frame_handle_close,
libdecor_frame_handle_commit,
},
#endif
.xdg_toplevel_listener = {
xdg_toplevel_handle_configure,
xdg_toplevel_handle_close,
},
};
static const toplevel_listener_t xdg_toplevel_listener = {
};
#ifdef HAVE_EGL
#define WL_EGL_ATTRIBS_BASE \
EGL_SURFACE_TYPE, EGL_WINDOW_BIT, \
EGL_RED_SIZE, 1, \
EGL_GREEN_SIZE, 1, \
EGL_BLUE_SIZE, 1, \
EGL_ALPHA_SIZE, 0, \
EGL_DEPTH_SIZE, 0
static bool gfx_ctx_wl_egl_init_context(gfx_ctx_wayland_data_t *wl)
{
static const EGLint egl_attribs_gl[] = {
WL_EGL_ATTRIBS_BASE,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_NONE,
};
#ifdef HAVE_OPENGLES
#ifdef HAVE_OPENGLES2
static const EGLint egl_attribs_gles[] = {
WL_EGL_ATTRIBS_BASE,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE,
};
#endif
#ifdef HAVE_OPENGLES3
#ifdef EGL_KHR_create_context
static const EGLint egl_attribs_gles3[] = {
WL_EGL_ATTRIBS_BASE,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES3_BIT_KHR,
EGL_NONE,
};
#endif
#endif
#endif
static const EGLint egl_attribs_vg[] = {
WL_EGL_ATTRIBS_BASE,
EGL_RENDERABLE_TYPE, EGL_OPENVG_BIT,
EGL_NONE,
};
EGLint n;
EGLint major = 0, minor = 0;
const EGLint *attrib_ptr = NULL;
switch (wl_api)
{
case GFX_CTX_OPENGL_API:
#ifdef HAVE_OPENGL
attrib_ptr = egl_attribs_gl;
#endif
break;
case GFX_CTX_OPENGL_ES_API:
#ifdef HAVE_OPENGLES
#ifdef HAVE_OPENGLES3
#ifdef EGL_KHR_create_context
if (g_egl_major >= 3)
attrib_ptr = egl_attribs_gles3;
else
#endif
#endif
#ifdef HAVE_OPENGLES2
attrib_ptr = egl_attribs_gles;
#endif
#endif
break;
case GFX_CTX_OPENVG_API:
#ifdef HAVE_VG
attrib_ptr = egl_attribs_vg;
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
if (!egl_init_context(&wl->egl,
EGL_PLATFORM_WAYLAND_KHR,
(EGLNativeDisplayType)wl->input.dpy,
&major, &minor, &n, attrib_ptr,
egl_default_accept_config_cb))
{
egl_report_error();
return false;
}
if (n == 0 || !wl->egl.config)
return false;
return true;
}
#endif
static void *gfx_ctx_wl_init(void *data)
{
int i;
gfx_ctx_wayland_data_t *wl = NULL;
if (!gfx_ctx_wl_init_common(&toplevel_listener, &wl))
goto error;
#ifdef HAVE_EGL
if (!gfx_ctx_wl_egl_init_context(wl))
goto error;
#endif
return wl;
error:
gfx_ctx_wl_destroy_resources(wl);
if (wl)
free(wl);
return NULL;
}
#ifdef HAVE_EGL
static EGLint *egl_fill_attribs(gfx_ctx_wayland_data_t *wl, EGLint *attr)
{
switch (wl_api)
{
#ifdef EGL_KHR_create_context
case GFX_CTX_OPENGL_API:
{
bool debug = false;
#ifdef HAVE_OPENGL
unsigned version = wl->egl.major * 1000 + wl->egl.minor;
bool core = version >= 3001;
#ifndef GL_DEBUG
struct retro_hw_render_callback *hwr =
video_driver_get_hw_context();
#endif
#ifdef GL_DEBUG
debug = true;
#else
debug = hwr->debug_context;
#endif
if (core)
{
*attr++ = EGL_CONTEXT_MAJOR_VERSION_KHR;
*attr++ = wl->egl.major;
*attr++ = EGL_CONTEXT_MINOR_VERSION_KHR;
*attr++ = wl->egl.minor;
/* Technically, we don't have core/compat until 3.2
* Version 3.1 is either compat or not depending
* on GL_ARB_compatibility. */
if (version >= 3002)
{
*attr++ = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
*attr++ = EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
}
}
if (debug)
{
*attr++ = EGL_CONTEXT_FLAGS_KHR;
*attr++ = EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
}
#endif
break;
}
#endif
case GFX_CTX_OPENGL_ES_API:
#ifdef HAVE_OPENGLES
*attr++ = EGL_CONTEXT_CLIENT_VERSION;
/* Same as EGL_CONTEXT_MAJOR_VERSION */
*attr++ = wl->egl.major ? (EGLint)wl->egl.major : 2;
#ifdef EGL_KHR_create_context
if (wl->egl.minor > 0)
{
*attr++ = EGL_CONTEXT_MINOR_VERSION_KHR;
*attr++ = wl->egl.minor;
}
#endif
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
*attr = EGL_NONE;
return attr;
}
#endif
static void gfx_ctx_wl_destroy(void *data)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
if (!wl)
return;
gfx_ctx_wl_destroy_resources(wl);
free(wl);
}
static void gfx_ctx_wl_set_swap_interval(void *data, int swap_interval)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
#ifdef HAVE_EGL
egl_set_swap_interval(&wl->egl, swap_interval);
#endif
}
static bool gfx_ctx_wl_set_video_mode(void *data,
unsigned width, unsigned height,
bool fullscreen)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
if (!gfx_ctx_wl_set_video_mode_common_size(wl, width, height, fullscreen))
goto error;
#ifdef HAVE_EGL
EGLint egl_attribs[16];
EGLint *attr = egl_fill_attribs(
(gfx_ctx_wayland_data_t*)data, egl_attribs);
wl->win = wl_egl_window_create(wl->surface,
wl->buffer_width,
wl->buffer_height);
if (!egl_create_context(&wl->egl, (attr != egl_attribs)
? egl_attribs : NULL))
{
egl_report_error();
goto error;
}
if (!egl_create_surface(&wl->egl, (EGLNativeWindowType)wl->win))
goto error;
egl_set_swap_interval(&wl->egl, wl->egl.interval);
#endif
if (!gfx_ctx_wl_set_video_mode_common_fullscreen(wl, fullscreen))
goto error;
return true;
error:
gfx_ctx_wl_destroy(data);
return false;
}
bool input_wl_init(void *data, const char *joypad_name);
static void gfx_ctx_wl_input_driver(void *data,
const char *joypad_name,
input_driver_t **input, void **input_data)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
/* Input is heavily tied to the window stuff
* on Wayland, so just implement the input driver here. */
if (!input_wl_init(&wl->input, joypad_name))
{
wl->input.gfx = NULL;
*input = NULL;
*input_data = NULL;
}
else
{
wl->input.gfx = wl;
*input = &input_wayland;
*input_data = &wl->input;
input_driver_init_joypads();
}
}
static enum gfx_ctx_api gfx_ctx_wl_get_api(void *data)
{
return wl_api;
}
static bool gfx_ctx_wl_bind_api(void *data,
enum gfx_ctx_api api, unsigned major, unsigned minor)
{
#ifdef HAVE_EGL
g_egl_major = major;
g_egl_minor = minor;
#endif
wl_api = api;
switch (api)
{
case GFX_CTX_OPENGL_API:
#ifdef HAVE_OPENGL
#ifndef EGL_KHR_create_context
if ((major * 1000 + minor) >= 3001)
break;
#endif
#ifdef HAVE_EGL
if (egl_bind_api(EGL_OPENGL_API))
return true;
#endif
#endif
break;
case GFX_CTX_OPENGL_ES_API:
#ifdef HAVE_OPENGLES
#ifndef EGL_KHR_create_context
if (major >= 3)
break;
#endif
#ifdef HAVE_EGL
if (egl_bind_api(EGL_OPENGL_ES_API))
return true;
#endif
#endif
break;
case GFX_CTX_OPENVG_API:
#ifdef HAVE_VG
#ifdef HAVE_EGL
if (egl_bind_api(EGL_OPENVG_API))
return true;
#endif
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
return false;
}
static void wl_surface_frame_done(void *data, struct wl_callback *cb, uint32_t time)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
wl->swap_complete = true;
/* Destroy this callback */
wl_callback_destroy(cb);
}
static const struct wl_callback_listener wl_surface_frame_listener = {
.done = wl_surface_frame_done,
};
static void gfx_ctx_wl_swap_buffers(void *data)
{
#ifdef HAVE_EGL
struct wl_callback *cb;
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
settings_t *settings = config_get_ptr();
unsigned max_swapchain_images = settings->uints.video_max_swapchain_images;
if (max_swapchain_images <= 2)
{
/* Set Wayland frame callback. */
cb = wl_surface_frame(wl->surface);
wl_callback_add_listener(cb, &wl_surface_frame_listener, wl);
}
egl_swap_buffers(&wl->egl);
if (max_swapchain_images <= 2)
{
/* Wait for the frame callback we set earlier. */
struct pollfd pollfd = {.fd = wl->input.fd, .events = POLLIN};
uint64_t deadline = cpu_features_get_time_usec() + 50000;
wl->swap_complete = false;
while (!wl->swap_complete)
{
uint64_t current_time = cpu_features_get_time_usec();
if (current_time >= deadline)
{
/* Deadline met. */
wl_callback_destroy(cb);
return;
}
uint64_t remaining_time = deadline - current_time;
int ret = (wl_display_dispatch_pending(wl->input.dpy));
if (ret == 0)
{
ret = wl_display_prepare_read(wl->input.dpy);
if (ret == -1)
continue; /* Retry dispatch_pending. */
ret = poll(&pollfd, 1, remaining_time / 1000);
if (ret <= 0)
{
/* Timeout met, or polling error. */
wl_display_cancel_read(wl->input.dpy);
wl_callback_destroy(cb);
return;
}
wl_display_read_events(wl->input.dpy);
}
}
}
#endif
}
static void gfx_ctx_wl_bind_hw_render(void *data, bool enable)
{
#ifdef HAVE_EGL
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
egl_bind_hw_render(&wl->egl, enable);
#endif
}
static uint32_t gfx_ctx_wl_get_flags(void *data)
{
uint32_t flags = 0;
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
const char *video_ident = video_driver_get_ident();
if (wl->core_hw_context_enable)
BIT32_SET(flags, GFX_CTX_FLAGS_GL_CORE_CONTEXT);
if (string_is_equal(video_ident, "glcore"))
{
#if defined(HAVE_SLANG) && defined(HAVE_SPIRV_CROSS)
BIT32_SET(flags, GFX_CTX_FLAGS_SHADERS_SLANG);
#endif
}
else if (string_is_equal(video_ident, "gl"))
{
#ifdef HAVE_GLSL
BIT32_SET(flags, GFX_CTX_FLAGS_SHADERS_GLSL);
#endif
}
return flags;
}
static void gfx_ctx_wl_set_flags(void *data, uint32_t flags)
{
gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)data;
if (BIT32_GET(flags, GFX_CTX_FLAGS_GL_CORE_CONTEXT))
wl->core_hw_context_enable = true;
}
const gfx_ctx_driver_t gfx_ctx_wayland = {
gfx_ctx_wl_init,
gfx_ctx_wl_destroy,
gfx_ctx_wl_get_api,
gfx_ctx_wl_bind_api,
gfx_ctx_wl_set_swap_interval,
gfx_ctx_wl_set_video_mode,
gfx_ctx_wl_get_video_size_common,
gfx_ctx_wl_get_refresh_rate,
NULL, /* get_video_output_size */
NULL, /* get_video_output_prev */
NULL, /* get_video_output_next */
gfx_ctx_wl_get_metrics_common,
NULL,
gfx_ctx_wl_update_title_common,
gfx_ctx_wl_check_window,
gfx_ctx_wl_set_resize,
gfx_ctx_wl_has_focus,
gfx_ctx_wl_suppress_screensaver,
true, /* has_windowed */
gfx_ctx_wl_swap_buffers,
gfx_ctx_wl_input_driver,
#ifdef HAVE_EGL
egl_get_proc_address,
#else
NULL,
#endif
NULL,
NULL,
gfx_ctx_wl_show_mouse,
"wayland",
gfx_ctx_wl_get_flags,
gfx_ctx_wl_set_flags,
gfx_ctx_wl_bind_hw_render,
NULL,
NULL,
};
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