- Implemented EGL Context

source/platform/interface/display.cpp

@@ -0,0 +1,42 @@
+// =====================================================================================================================
+//  fennec, a free and open source game engine
+//  Copyright © 2025  Medusa Slockbower
+//
+//  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 3 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 <https://www.gnu.org/licenses/>.
+// =====================================================================================================================
+
+#include <fennec/platform/interface/display.h>
+#include <fennec/platform/interface/gfxcontext.h>
+#include <fennec/platform/interface/platform.h>
+
+namespace fennec
+{
+
+display::~display() {
+	delete _context;
+}
+
+void display::select_context() {
+	if (_context != nullptr) return;
+
+	const platform::global_context& globals = platform::get_globals();
+	for (const auto& ctx : globals.graphics) {
+		_context = ctx.constructor(this);
+		if (_context) {
+			return;
+		}
+	}
+}
+
+}

source/platform/interface/platform.cpp

@@ -23,21 +23,22 @@ namespace fennec
 {
 
 template<typename CtorT>
-static constexpr void insert_driver(list<platform::driver<CtorT>>& list, CtorT ctor, int priority) {
-	using list_t = fennec::list<platform::driver<CtorT>>;
+static constexpr void insert_driver(list<platform::driver<CtorT>>& drvrs, CtorT ctor, int priority) {
+	using list_t = list<platform::driver<CtorT>>;
 	using iter_t = typename list_t::iterator;
 
-	iter_t it = list.begin();
-	while (it != list.end()) {
+	iter_t it = drvrs.begin();
+	while (it != drvrs.end()) {
 		if (priority > it->priority) {
 			break;
 		}
 	}
-	list.insert(it, { priority, ctor });
+	drvrs.insert(it, { priority, ctor });
 }
 
 void platform::initialize() {
 	load_display();
+	_display->select_context();
 }
 
 void platform::shutdown() {

source/platform/linux/platform.cpp

@@ -25,8 +25,7 @@ namespace fennec
 {
 
 STATIC_CONSTRUCTOR(_init_linux) {
-	static linux_platform* platform = new linux_platform();
-	file::cout().write(platform, sizeof(platform), 1);
+	static linux_platform platform;
 }
 
 void linux_platform::initialize() {
@@ -34,7 +33,7 @@ void linux_platform::initialize() {
 }
 
 void linux_platform::shutdown() {
-
+	platform::shutdown();
 }
 
 }

source/platform/linux/wayland/display.cpp

@@ -38,7 +38,7 @@ STATIC_CONSTRUCTOR(_wayland_init) {
 }
 
 wayland_display::wayland_display(platform* platform)
-	: display(platform)
+	: display(platform, "wayland", this)
 	, _handle(nullptr)
 	, _registry(nullptr)
 	, _compositor(nullptr)
@@ -56,22 +56,23 @@ wayland_display::wayland_display(platform* platform)
 
 	// Get handles
 	_handle = wl_display_connect(nullptr);
-
 	if (not _handle) {
 		cleanup();
 		return;
 	}
 
+	// Get the wayland registry
 	_registry = wl_display_get_registry(_handle);
-
 	if (not _registry) {
 		cleanup();
 		return;
 	}
 
+	// Add listener for interfaces
 	wl_registry_add_listener(_registry, &listener, this);
 	wl_display_roundtrip(_handle);
 
+	// Check for fifo v1, wayland's builtin fifo only allows one frame to be in flight at a time
 	if (not _fifo) {
 		assert(_fifo, "Compositor does not support fifo-v1 protocol, falling back to other display protocols.");
 		cleanup();
@@ -111,7 +112,7 @@ void wayland_display::cleanup() {
 	libwayland::unload_symbols(_platform);
 }
 
-	void wayland_display::listen_global(void* data, wl_registry* registry, uint32_t name, const char* itfc, uint32_t version) {
+void wayland_display::listen_global(void* data, wl_registry* registry, uint32_t name, const char* itfc, uint32_t version) {
 	static constexpr wl_seat_listener seat_listener = {
 		listen_seat, nullptr
 	};
@@ -132,10 +133,10 @@ void wayland_display::cleanup() {
 
 }
 
-	void wayland_display::listen_global_remove(void*, wl_registry*, uint32_t) {
+void wayland_display::listen_global_remove(void*, wl_registry*, uint32_t) {
 }
 
-	void wayland_display::listen_seat(void*, wl_seat*, uint32_t) {
+void wayland_display::listen_seat(void*, wl_seat*, uint32_t) {
 
 }
 

source/platform/opengl/egl/context.cpp

@@ -0,0 +1,136 @@
+// =====================================================================================================================
+//  fennec, a free and open source game engine
+//  Copyright © 2025  Medusa Slockbower
+//
+//  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 3 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 <https://www.gnu.org/licenses/>.
+// =====================================================================================================================
+
+#include <fennec/lang/startup.h>
+#include <fennec/platform/interface/display.h>
+#include <fennec/platform/interface/platform.h>
+#include <fennec/platform/opengl/egl/context.h>
+
+namespace fennec
+{
+
+static gfxcontext* _create_egl_context(display* display) {
+	eglcontext* ctx = new eglcontext(display);
+	if (not ctx->connected()) {
+		delete ctx, ctx = nullptr;
+	}
+	return ctx;
+}
+
+STATIC_CONSTRUCTOR(_egl_init) {
+	platform::add_driver(_create_egl_context, 1);
+}
+
+eglcontext::eglcontext(display* display)
+	: gfxcontext(display, "EGL", this) {
+
+	const display::pixel_format& fmt = _display->get_color_format();
+
+	EGLint context_attrs[] = {
+#if FENNEC_GRAPHICS_OPENGL
+		EGL_CONTEXT_MAJOR_VERSION, 4,
+		EGL_CONTEXT_MINOR_VERSION, 3,
+#elif FENNEC_GRAPHICS_GLES3
+		EGL_CONTEXT_MAJOR_VERSION, 3,
+		EGL_CONTEXT_MINOR_VERSION, 2,
+#elif FENNEC_GRAPHICS_GLES2
+		EGL_CONTEXT_MAJOR_VERSION, 2,
+		EGL_CONTEXT_MINOR_VERSION, 0,
+#endif
+		EGL_NONE
+	};
+
+	EGLint config_attrs[] = {
+		EGL_SURFACE_TYPE,
+		EGL_WINDOW_BIT,
+		EGL_DEPTH_SIZE, fmt.depth,
+		EGL_RED_SIZE, fmt.r,
+		EGL_RED_SIZE, fmt.g,
+		EGL_RED_SIZE, fmt.b,
+		EGL_RENDERABLE_TYPE,
+
+#if FENNEC_GRAPHICS_OPENGL
+		EGL_OPENGL_BIT,
+#elif FENNEC_GRAPHICS_GLES3
+		EGL_OPENGL_ES3_BIT,
+#elif FENNEC_GRAPHICS_GLES2
+		EGL_OPENGL_ES2_BIT,
+#endif
+		EGL_NONE
+	};
+
+
+	_egldisplay = eglGetDisplay(_display->get_native_handle());
+	if (_egldisplay == nullptr) {
+		cleanup();
+		return;
+	}
+
+	if (not eglInitialize(_egldisplay, &_eglvmajor, &_eglvminor)) {
+		cleanup();
+		return;
+	}
+
+#if FENNEC_GRAPHICS_OPENGL
+	if (not eglBindAPI(EGL_OPENGL_API)) {
+#elif FENNEC_GRAPHICS_GLES3 or FENNEC_GRAPHICS_GLES2
+	if (not eglBindAPI(EGL_OPENGL_ES_API)) {
+#endif
+		cleanup();
+		return;
+	}
+
+	EGLint n;
+	if (not eglChooseConfig(_egldisplay, config_attrs, &_eglconfig, 1, &n)) {
+		cleanup();
+		return;
+	}
+
+	_eglcontext = eglCreateContext(_egldisplay, _eglconfig, EGL_NO_CONTEXT, context_attrs);
+	if (_eglcontext == nullptr) {
+		cleanup();
+		return;
+	}
+}
+
+eglcontext::~eglcontext() {
+	cleanup();
+}
+
+bool eglcontext::connected() {
+	return _eglcontext != nullptr;
+}
+
+void eglcontext::make_current(gfxsurface*) {
+
+}
+
+void eglcontext::cleanup() {
+	eglMakeCurrent(_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+	eglDestroyContext(_display, _eglcontext);
+	eglTerminate(_display);
+	eglReleaseThread();
+
+	_egldisplay = nullptr;
+	_eglconfig  = nullptr;
+	_eglcontext = nullptr;
+	_eglvmajor  = 0;
+	_eglvminor  = 0;
+}
+
+}