Initial commit

backends/platform/sdl/amigaos/amigaos.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "common/scummsys.h"
+
+#ifdef __amigaos4__
+
+#include "backends/platform/sdl/amigaos/amigaos.h"
+#include "backends/fs/amigaos/amigaos-fs-factory.h"
+#include "backends/dialogs/amigaos/amigaos-dialogs.h"
+
+static bool cleanupDone = false;
+
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+static bool sdlGLLoadLibrary(const char *path) {
+	return SDL_GL_LoadLibrary(path);
+}
+#else
+static bool sdlGLLoadLibrary(const char *path) {
+	return SDL_GL_LoadLibrary(path) != 0;
+}
+#endif
+
+static void cleanup() {
+	if (!cleanupDone)
+		g_system->destroy();
+}
+
+OSystem_AmigaOS::~OSystem_AmigaOS() {
+	cleanupDone = true;
+}
+
+void OSystem_AmigaOS::init() {
+	// Register cleanup function to avoid unfreed signals
+	if (atexit(cleanup))
+		warning("Failed to register cleanup function via atexit()");
+
+	// Initialize File System Factory
+	_fsFactory = new AmigaOSFilesystemFactory();
+
+	// Invoke parent implementation of this method
+	OSystem_SDL::init();
+
+#if defined(USE_SYSDIALOGS)
+	_dialogManager = new AmigaOSDialogManager();
+#endif
+}
+
+bool OSystem_AmigaOS::hasFeature(Feature f) {
+#if defined(USE_SYSDIALOGS)
+	if (f == kFeatureSystemBrowserDialog)
+		return true;
+#endif
+
+	return OSystem_SDL::hasFeature(f);
+}
+
+void OSystem_AmigaOS::initBackend() {
+	// AmigaOS4 SDL provides two OpenGL implementations
+	// (OpenGL 1.3 with miniGL and OpenGL ES with OGLES2)
+	// This is chosen by setting the profile mask attribute
+	// before the first window creation but after init
+	int force = 0;
+	if (ConfMan.hasKey("opengl_implementation")) {
+		Common::String implem = ConfMan.get("opengl_implementation");
+		if (implem == "gl") {
+			force = 1;;
+		} else if (implem == "gles2") {
+			force = 2;
+		}
+	}
+
+	// If not forcing, try OGLES2 first
+	if (!force || force == 2) {
+		SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
+		SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
+		SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
+		if (!sdlGLLoadLibrary(NULL)) {
+			if (force) {
+				warning("OpenGL implementation chosen is unsupported, falling back");
+				force = 0;
+			}
+			// SDL doesn't seem to be clean when loading fail
+			SDL_GL_UnloadLibrary();
+			SDL_GL_ResetAttributes();
+		} else {
+			// Loading succeeded, don't try anything more
+			force = 2;
+		}
+	}
+	// If not forcing, next try miniGL
+	if (!force || force == 1) {
+		SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 0);
+		SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 1);
+		SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
+		if (!sdlGLLoadLibrary(NULL)) {
+			if (force) {
+				warning("OpenGL implementation chosen is unsupported, falling back");
+				force = 0;
+			}
+			// SDL doesn't seem to be clean when loading fail
+			SDL_GL_UnloadLibrary();
+			SDL_GL_ResetAttributes();
+		} else {
+			// Loading succeeded, don't try anything more
+			force = 1;
+		}
+	}
+	// First time user defaults
+	ConfMan.registerDefault("audio_buffer_size", "2048");
+	ConfMan.registerDefault("extrapath", Common::Path("extras/"));
+	ConfMan.registerDefault("iconspath", Common::Path("icons/"));
+	ConfMan.registerDefault("pluginspath", Common::Path("plugins/"));
+	ConfMan.registerDefault("savepath", Common::Path("saves/"));
+	ConfMan.registerDefault("themepath", Common::Path("themes/"));
+	// First time .ini defaults
+	if (!ConfMan.hasKey("audio_buffer_size")) {
+		ConfMan.set("audio_buffer_size", "2048");
+	}
+	if (!ConfMan.hasKey("extrapath")) {
+		ConfMan.setPath("extrapath", "extras/");
+	}
+	if (!ConfMan.hasKey("iconspath")) {
+		ConfMan.setPath("iconspath", "icons/");
+	}
+	if (!ConfMan.hasKey("pluginspath")) {
+		ConfMan.setPath("pluginspath", "plugins/");
+	}
+	if (!ConfMan.hasKey("savepath")) {
+		ConfMan.setPath("savepath", "saves/");
+	}
+	if (!ConfMan.hasKey("themepath")) {
+		ConfMan.setPath("themepath", "themes/");
+	}
+	OSystem_SDL::initBackend();
+}
+
+#endif