From 6969877f0d16864bfe0392f18de4310309372eb3 Mon Sep 17 00:00:00 2001 From: Georges Basile Stavracas Neto Date: Mon, 9 Mar 2020 21:09:11 -0300 Subject: [PATCH 13/25] libobs-opengl: Introduce an EGL/Wayland renderer Introduce a new Wayland/EGL renderer. --- libobs-opengl/CMakeLists.txt | 23 +++ libobs-opengl/gl-nix.c | 7 +- libobs-opengl/gl-nix.h | 1 + libobs-opengl/gl-wayland-egl.c | 342 +++++++++++++++++++++++++++++++++ libobs-opengl/gl-wayland-egl.h | 22 +++ 5 files changed, 394 insertions(+), 1 deletion(-) create mode 100644 libobs-opengl/gl-wayland-egl.c create mode 100644 libobs-opengl/gl-wayland-egl.h diff --git a/libobs-opengl/CMakeLists.txt b/libobs-opengl/CMakeLists.txt index 08e06f0d..6476e0be 100644 --- a/libobs-opengl/CMakeLists.txt +++ b/libobs-opengl/CMakeLists.txt @@ -52,6 +52,29 @@ else() gl-nix.c gl-x11-egl.c gl-x11-glx.c) + + if(ENABLE_WAYLAND) + find_package(EGL REQUIRED) + find_package(Wayland REQUIRED) + + include_directories( + ${WAYLAND_CLIENT_INCLUDE_DIRS} + ${WAYLAND_EGL_INCLUDE_DIRS} + ${EGL_INCLUDE_DIRS}) + + add_definitions( + ${WAYLAND_DEFINITIONS}) + + set(libobs-opengl_PLATFORM_DEPS + ${libobs-opengl_PLATFORM_DEPS} + ${WAYLAND_CLIENT_LIBRARIES} + ${WAYLAND_EGL_LIBRARIES} + ${EGL_LIBRARIES}) + + set(libobs-opengl_PLATFORM_SOURCES + ${libobs-opengl_PLATFORM_SOURCES} + gl-wayland-egl.c) + endif() endif() set(libobs-opengl_SOURCES diff --git a/libobs-opengl/gl-nix.c b/libobs-opengl/gl-nix.c index 581e16a4..6c272c3d 100644 --- a/libobs-opengl/gl-nix.c +++ b/libobs-opengl/gl-nix.c @@ -19,6 +19,10 @@ #include "gl-x11-glx.h" #include "gl-x11-egl.h" +#ifdef ENABLE_WAYLAND +#include "gl-wayland-egl.h" +#endif + static const struct gl_winsys_vtable *gl_vtable = NULL; static void init_winsys(void) @@ -34,7 +38,8 @@ static void init_winsys(void) break; #ifdef ENABLE_WAYLAND case OBS_NIX_PLATFORM_WAYLAND: - blog(LOG_ERROR, "EGL/Wayland not implemented yet"); + gl_vtable = gl_wayland_egl_get_winsys_vtable(); + blog(LOG_INFO, "Using EGL/Wayland"); break; #endif } diff --git a/libobs-opengl/gl-nix.h b/libobs-opengl/gl-nix.h index f5532719..741154da 100644 --- a/libobs-opengl/gl-nix.h +++ b/libobs-opengl/gl-nix.h @@ -17,6 +17,7 @@ #pragma once +#include #include #include "gl-subsystem.h" diff --git a/libobs-opengl/gl-wayland-egl.c b/libobs-opengl/gl-wayland-egl.c new file mode 100644 index 00000000..aad6993e --- /dev/null +++ b/libobs-opengl/gl-wayland-egl.c @@ -0,0 +1,342 @@ +/****************************************************************************** + Copyright (C) 2019 by Jason Francis + + This program 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 Foundation, either version 2 of the License, or + (at your option) any later version. + + This program 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 this program. If not, see . +******************************************************************************/ + +#include "gl-wayland-egl.h" + +#include +#include + +#include + +static const EGLint config_attribs[] = {EGL_SURFACE_TYPE, + EGL_WINDOW_BIT, + EGL_RENDERABLE_TYPE, + EGL_OPENGL_BIT, + EGL_STENCIL_SIZE, + 0, + EGL_DEPTH_SIZE, + 0, + EGL_BUFFER_SIZE, + 32, + EGL_ALPHA_SIZE, + 8, + EGL_NATIVE_RENDERABLE, + EGL_TRUE, + EGL_NONE}; + +static const EGLint ctx_attribs[] = { +#ifdef _DEBUG + EGL_CONTEXT_OPENGL_DEBUG, + EGL_TRUE, +#endif + EGL_CONTEXT_OPENGL_PROFILE_MASK, + EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT, + EGL_CONTEXT_MAJOR_VERSION, + 3, + EGL_CONTEXT_MINOR_VERSION, + 3, + EGL_NONE}; + +static const EGLint khr_ctx_attribs[] = { +#ifdef _DEBUG + EGL_CONTEXT_FLAGS_KHR, + EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR, +#endif + EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, + EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR, + EGL_CONTEXT_MAJOR_VERSION_KHR, + 3, + EGL_CONTEXT_MINOR_VERSION_KHR, + 3, + EGL_NONE}; + +struct gl_windowinfo { + struct wl_egl_window *window; + EGLSurface egl_surface; +}; + +struct gl_platform { + struct wl_display *wl_display; + EGLDisplay display; + EGLConfig config; + EGLContext context; +}; + +struct gl_windowinfo * +gl_wayland_egl_windowinfo_create(const struct gs_init_data *info) +{ + struct wl_egl_window *window = + wl_egl_window_create(info->window.display, info->cx, info->cy); + if (window == NULL) { + blog(LOG_ERROR, "wl_egl_window_create failed"); + return NULL; + } + + struct gl_windowinfo *wi = bmalloc(sizeof(struct gl_windowinfo)); + wi->window = window; + return wi; +} + +static void gl_wayland_egl_windowinfo_destroy(struct gl_windowinfo *info) +{ + wl_egl_window_destroy(info->window); + bfree(info); +} + +static bool egl_make_current(EGLDisplay display, EGLSurface surface, + EGLContext context) +{ + if (eglBindAPI(EGL_OPENGL_API) == EGL_FALSE) { + blog(LOG_ERROR, "eglBindAPI failed"); + } + + if (!eglMakeCurrent(display, surface, surface, context)) { + blog(LOG_ERROR, "eglMakeCurrent failed"); + return false; + } + return true; +} + +static bool egl_context_create(struct gl_platform *plat, const EGLint *attribs) +{ + bool success = false; + EGLint num_config; + + if (eglBindAPI(EGL_OPENGL_API) == EGL_FALSE) { + blog(LOG_ERROR, "eglBindAPI failed"); + } + + EGLBoolean result = eglChooseConfig(plat->display, config_attribs, + &plat->config, 1, &num_config); + if (result != EGL_TRUE || num_config == 0) { + blog(LOG_ERROR, "eglChooseConfig failed"); + goto error; + } + + plat->context = eglCreateContext(plat->display, plat->config, + EGL_NO_CONTEXT, attribs); + if (plat->context == EGL_NO_CONTEXT) { + blog(LOG_ERROR, "eglCreateContext failed"); + goto error; + } + + success = + egl_make_current(plat->display, EGL_NO_SURFACE, plat->context); + +error: + return success; +} + +static void egl_context_destroy(struct gl_platform *plat) +{ + egl_make_current(plat->display, EGL_NO_SURFACE, EGL_NO_CONTEXT); + eglDestroyContext(plat->display, plat->context); +} + +static bool extension_supported(const char *extensions, const char *search) +{ + const char *result = strstr(extensions, search); + unsigned long len = strlen(search); + return result != NULL && + (result == extensions || *(result - 1) == ' ') && + (result[len] == ' ' || result[len] == '\0'); +} + +static struct gl_platform *gl_wayland_egl_platform_create(gs_device_t *device, + uint32_t adapter) +{ + struct gl_platform *plat = bmalloc(sizeof(struct gl_platform)); + + plat->wl_display = obs_get_nix_platform_display(); + + device->plat = plat; + + plat->display = eglGetDisplay(plat->wl_display); + if (plat->display == EGL_NO_DISPLAY) { + blog(LOG_ERROR, "eglGetDisplay failed"); + goto fail_display_init; + } + + EGLint major; + EGLint minor; + + if (eglInitialize(plat->display, &major, &minor) == EGL_FALSE) { + blog(LOG_ERROR, "eglInitialize failed"); + goto fail_display_init; + } + + blog(LOG_INFO, "Initialized EGL %d.%d", major, minor); + + const char *extensions = eglQueryString(plat->display, EGL_EXTENSIONS); + blog(LOG_DEBUG, "Supported EGL Extensions: %s", extensions); + + const EGLint *attribs = ctx_attribs; + if (major == 1 && minor == 4) { + if (extension_supported(extensions, "EGL_KHR_create_context")) { + attribs = khr_ctx_attribs; + } else { + blog(LOG_ERROR, + "EGL_KHR_create_context extension is required to use EGL 1.4."); + goto fail_context_create; + } + } else if (major < 1 || (major == 1 && minor < 4)) { + blog(LOG_ERROR, "EGL 1.4 or higher is required."); + goto fail_context_create; + } + + if (!egl_context_create(plat, attribs)) { + goto fail_context_create; + } + + if (!gladLoadGL()) { + blog(LOG_ERROR, "Failed to load OpenGL entry functions."); + goto fail_load_gl; + } + + goto success; + +fail_load_gl: + egl_context_destroy(plat); +fail_context_create: + eglTerminate(plat->display); +fail_display_init: + bfree(plat); + plat = NULL; +success: + UNUSED_PARAMETER(adapter); + return plat; +} + +static void gl_wayland_egl_platform_destroy(struct gl_platform *plat) +{ + if (plat) { + egl_context_destroy(plat); + eglTerminate(plat->display); + bfree(plat); + } +} + +static bool gl_wayland_egl_platform_init_swapchain(struct gs_swap_chain *swap) +{ + struct gl_platform *plat = swap->device->plat; + EGLSurface egl_surface = eglCreateWindowSurface( + plat->display, plat->config, swap->wi->window, NULL); + if (egl_surface == EGL_NO_SURFACE) { + blog(LOG_ERROR, "eglCreateWindowSurface failed"); + return false; + } + swap->wi->egl_surface = egl_surface; + return true; +} + +static void +gl_wayland_egl_platform_cleanup_swapchain(struct gs_swap_chain *swap) +{ + struct gl_platform *plat = swap->device->plat; + eglDestroySurface(plat->display, swap->wi->egl_surface); +} + +static void gl_wayland_egl_device_enter_context(gs_device_t *device) +{ + struct gl_platform *plat = device->plat; + EGLSurface surface = EGL_NO_SURFACE; + if (device->cur_swap != NULL) + surface = device->cur_swap->wi->egl_surface; + egl_make_current(plat->display, surface, plat->context); +} + +static void gl_wayland_egl_device_leave_context(gs_device_t *device) +{ + struct gl_platform *plat = device->plat; + egl_make_current(plat->display, EGL_NO_SURFACE, EGL_NO_CONTEXT); +} + +static void *gl_wayland_egl_device_get_device_obj(gs_device_t *device) +{ + return device->plat->context; +} + +static void gl_wayland_egl_getclientsize(const struct gs_swap_chain *swap, + uint32_t *width, uint32_t *height) +{ + wl_egl_window_get_attached_size(swap->wi->window, (void *)width, + (void *)height); +} + +static void gl_wayland_egl_clear_context(gs_device_t *device) +{ + struct gl_platform *plat = device->plat; + egl_make_current(plat->display, EGL_NO_SURFACE, EGL_NO_CONTEXT); +} + +static void gl_wayland_egl_update(gs_device_t *device) +{ + wl_egl_window_resize(device->cur_swap->wi->window, + device->cur_swap->info.cx, + device->cur_swap->info.cy, 0, 0); +} + +static void gl_wayland_egl_device_load_swapchain(gs_device_t *device, + gs_swapchain_t *swap) +{ + if (device->cur_swap == swap) + return; + + device->cur_swap = swap; + + struct gl_platform *plat = device->plat; + if (swap == NULL) { + egl_make_current(plat->display, EGL_NO_SURFACE, EGL_NO_CONTEXT); + } else { + egl_make_current(plat->display, swap->wi->egl_surface, + plat->context); + } +} + +static void gl_wayland_egl_device_present(gs_device_t *device) +{ + struct gl_platform *plat = device->plat; + struct gl_windowinfo *wi = device->cur_swap->wi; + if (eglSwapInterval(plat->display, 0) == EGL_FALSE) { + blog(LOG_ERROR, "eglSwapInterval failed"); + } + if (eglSwapBuffers(plat->display, wi->egl_surface) == EGL_FALSE) { + blog(LOG_ERROR, "eglSwapBuffers failed"); + } +} + +static const struct gl_winsys_vtable egl_wayland_winsys_vtable = { + .windowinfo_create = gl_wayland_egl_windowinfo_create, + .windowinfo_destroy = gl_wayland_egl_windowinfo_destroy, + .platform_create = gl_wayland_egl_platform_create, + .platform_destroy = gl_wayland_egl_platform_destroy, + .platform_init_swapchain = gl_wayland_egl_platform_init_swapchain, + .platform_cleanup_swapchain = gl_wayland_egl_platform_cleanup_swapchain, + .device_enter_context = gl_wayland_egl_device_enter_context, + .device_leave_context = gl_wayland_egl_device_leave_context, + .device_get_device_obj = gl_wayland_egl_device_get_device_obj, + .getclientsize = gl_wayland_egl_getclientsize, + .clear_context = gl_wayland_egl_clear_context, + .update = gl_wayland_egl_update, + .device_load_swapchain = gl_wayland_egl_device_load_swapchain, + .device_present = gl_wayland_egl_device_present, +}; + +const struct gl_winsys_vtable *gl_wayland_egl_get_winsys_vtable(void) +{ + return &egl_wayland_winsys_vtable; +} diff --git a/libobs-opengl/gl-wayland-egl.h b/libobs-opengl/gl-wayland-egl.h new file mode 100644 index 00000000..3384576f --- /dev/null +++ b/libobs-opengl/gl-wayland-egl.h @@ -0,0 +1,22 @@ +/****************************************************************************** + Copyright (C) 2019 by Jason Francis + + This program 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 Foundation, either version 2 of the License, or + (at your option) any later version. + + This program 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 this program. If not, see . +******************************************************************************/ + +#pragma once + +#include "gl-nix.h" + +const struct gl_winsys_vtable *gl_wayland_egl_get_winsys_vtable(void); -- 2.28.0