Add support for SDL2

.appveyor.yml

@@ -1,28 +1,36 @@
 image: Visual Studio 2017
 configuration: Release
-platform:
-  - win-amd64-null
-  - win-amd64-gl3
-  - win-amd64-d3d9
 environment:
-  APPVEYOR_SAVE_CACHE_ON_ERROR: true
-  GLFW_BASE: glfw-3.2.1.bin.WIN64
-  GLFW_URL: https://github.com/glfw/glfw/releases/download/3.2.1/%GLFW_BASE%.zip
   GLEW_BASE: glew-2.1.0
   GLEW_URL: https://github.com/nigels-com/glew/releases/download/glew-2.1.0/%GLEW_BASE%-win32.zip
+  GLFW_BASE: glfw-3.2.1.bin.WIN64
+  GLFW_URL: https://github.com/glfw/glfw/releases/download/3.2.1/%GLFW_BASE%.zip
+  SDL2_BASE: SDL2-devel-2.0.8-VC
+  SDL2_URL: https://www.libsdl.org/release/%SDL2_BASE%.zip
+  SDL2_DIRAME: SDL2-2.0.8
   PREMAKE5_URL: https://github.com/premake/premake-core/releases/download/v5.0.0-alpha12/premake-5.0.0-alpha12-windows.zip
+  matrix:
+  - PLATFORM: win-amd64-null
+  - PLATFORM: win-amd64-gl3
+    PREMAKE5_EXTRA_ARGS: --gfxlib=glfw
+  - PLATFORM: win-amd64-gl3
+    PREMAKE5_EXTRA_ARGS: --gfxlib=sdl2
+  - PLATFORM: win-amd64-d3d9
+
 install:
   - appveyor DownloadFile %GLFW_URL% -FileName "%APPVEYOR_BUILD_FOLDER%/%GLFW_BASE%.zip"
   - 7z x "%APPVEYOR_BUILD_FOLDER%/%GLFW_BASE%.zip"
   - appveyor DownloadFile %GLEW_URL% -FileName "%APPVEYOR_BUILD_FOLDER%/%GLEW_BASE%.zip"
   - 7z x "%APPVEYOR_BUILD_FOLDER%/%GLEW_BASE%.zip"
+  - appveyor DownloadFile %SDL2_URL% -FileName "%APPVEYOR_BUILD_FOLDER%/%SDL2_BASE%.zip"
+  - 7z x "%APPVEYOR_BUILD_FOLDER%/%SDL2_BASE%.zip"
   - appveyor DownloadFile %PREMAKE5_URL% -FileName "%APPVEYOR_BUILD_FOLDER%/premake5.zip"
   - mkdir "%APPVEYOR_BUILD_FOLDER%/bin" && cd "%APPVEYOR_BUILD_FOLDER%/bin" && 7z x "%APPVEYOR_BUILD_FOLDER%/premake5.zip"
   - set PATH=%APPVEYOR_BUILD_FOLDER%/bin;%PATH%
 before_build:
   - mkdir "%APPVEYOR_BUILD_FOLDER%/build"
   - cd "%APPVEYOR_BUILD_FOLDER%"
-  - premake5 vs2017 --glfwdir=%APPVEYOR_BUILD_FOLDER%/%GLFW_BASE% --glewdir=%APPVEYOR_BUILD_FOLDER%/%GLEW_BASE%
+  - premake5 vs2017 --glewdir=%APPVEYOR_BUILD_FOLDER%/%GLEW_BASE% --glfwdir=%APPVEYOR_BUILD_FOLDER%/%GLFW_BASE% --sdl2dir=%APPVEYOR_BUILD_FOLDER%/%SDL2_DIRAME% %PREMAKE5_EXTRA_ARGS%
 build:
   project: c:\projects\librw\build\librw.sln
   verbosity: minimal

.travis.yml

@@ -3,7 +3,7 @@ language: cpp
 matrix:
   include:
   - os: linux
-    env: TARGET="release_linux-amd64-null"
+    env: TARGET=release_linux-amd64-null
     script:
     - mkdir -p "$TRAVIS_BUILD_DIR/build"
     #- docker build -t librw "$TRAVIS_BUILD_DIR"
@@ -12,7 +12,7 @@ matrix:
     - docker run -v "$TRAVIS_BUILD_DIR:/librw:rw,z" -v "$TRAVIS_BUILD_DIR/build:/build:rw,z" --name librw_instance -d librw/librw sleep infinity
     - docker exec -u builder librw_instance /bin/bash -c "cd /librw && premake5 gmake && cd /librw/build && make config=$TARGET verbose=1"
   - os: linux
-    env: TARGET="release_linux-amd64-gl3"
+    env: TARGET=release_linux-amd64-gl3 GFXLIB=glfw
     services: docker
     script:
     - mkdir -p "$TRAVIS_BUILD_DIR/build"
@@ -20,9 +20,19 @@ matrix:
     #- docker run -v "$TRAVIS_BUILD_DIR:/librw:rw,z" --name librw_instance -d librw sleep infinity
     - docker pull librw/librw
     - docker run -v "$TRAVIS_BUILD_DIR:/librw:rw,z" -v "$TRAVIS_BUILD_DIR/build:/build:rw,z" --name librw_instance -d librw/librw sleep infinity
-    - docker exec -u builder librw_instance /bin/bash -c "cd /librw && premake5 gmake && cd /librw/build && make config=$TARGET verbose=1"
+    - docker exec -u builder librw_instance /bin/bash -c "cd /librw && premake5 --gfxlib=$GFXLIB gmake && cd /librw/build && make config=$TARGET verbose=1"
   - os: linux
-    env: TARGET="release_ps2"
+    env: TARGET=release_linux-amd64-gl3 GFXLIB=sdl2
+    services: docker
+    script:
+    - mkdir -p "$TRAVIS_BUILD_DIR/build"
+    #- docker build -t librw "$TRAVIS_BUILD_DIR"
+    #- docker run -v "$TRAVIS_BUILD_DIR:/librw:rw,z" --name librw_instance -d librw sleep infinity
+    - docker pull librw/librw
+    - docker run -v "$TRAVIS_BUILD_DIR:/librw:rw,z" -v "$TRAVIS_BUILD_DIR/build:/build:rw,z" --name librw_instance -d librw/librw sleep infinity
+    - docker exec -u builder librw_instance /bin/bash -c "cd /librw && premake5 --gfxlib=$GFXLIB gmake && cd /librw/build && make config=$TARGET verbose=1"
+  - os: linux
+    env: TARGET=release_ps2
     services: docker
     script:
     - mkdir -p "$TRAVIS_BUILD_DIR/build"

Dockerfile

@@ -30,6 +30,7 @@ RUN mkdir -p "$PS2DEV" "$PS2SDK" \
         zlib1g-dev \
         libglew-dev \
         libglfw3-dev \
+        libsdl2-dev \
     && git clone -b $TOOLCHAIN_GIT_BRANCH $TOOLCHAIN_GIT_URL /toolchain \
     && cd /toolchain \
     && ./toolchain.sh \

premake5.lua

@@ -1,17 +1,35 @@
 newoption {
 	trigger     = "glewdir",
-	value       = "path",
+	value       = "PATH",
 	description = "Directory of GLEW",
 	default     = "C:/Users/aap/src/glew-2.1.0",
 }
 
+newoption {
+	trigger		= "gfxlib",
+	value       = "LIBRARY",
+	description = "Choose a particular development library",
+	default		= "glfw",
+	allowed		= {
+		{ "glfw",	"GLFW" },
+		{ "sdl2",	"SDL2" },
+	},
+}
+
 newoption {
 	trigger     = "glfwdir",
-	value       = "path",
+	value       = "PATH",
 	description = "Directory of glfw",
 	default     = "C:/Users/aap/src/glfw-3.2.1.bin.WIN64",
 }
 
+newoption {
+	trigger     = "sdl2dir",
+	value       = "PATH",
+	description = "Directory of sdl2",
+	default     = "C:/Users/aap/src/SDL2-2.0.8",
+}
+
 workspace "librw"
 	location "build"
 	language "C++"
@@ -25,6 +43,9 @@ workspace "librw"
 		platforms { "linux-x86-null", "linux-x86-gl3",
 		"linux-amd64-null", "linux-amd64-gl3",
 		"ps2" }
+		if _OPTIONS["gfxlib"] == "sdl2" then
+			includedirs { "/usr/include/SDL2" }
+		end
 	filter {}
 
 	filter "configurations:Debug"
@@ -40,6 +61,9 @@ workspace "librw"
 		defines { "RW_NULL" }
 	filter { "platforms:*gl3" }
 		defines { "RW_GL3" }
+		if _OPTIONS["gfxlib"] == "sdl2" then
+			defines { "LIBRW_SDL2" }
+		end
 	filter { "platforms:*d3d9" }
 		defines { "RW_D3D9" }
 	filter { "platforms:ps2" }
@@ -64,6 +88,7 @@ workspace "librw"
 		defines { "GLEW_STATIC" }
 		includedirs { path.join(_OPTIONS["glewdir"], "include") }
 		includedirs { path.join(_OPTIONS["glfwdir"], "include") }
+		includedirs { path.join(_OPTIONS["sdl2dir"], "include") }
 
 	filter "action:vs*"
 		buildoptions { "/wd4996", "/wd4244" }
@@ -91,16 +116,28 @@ project "dumprwtree"
 
 function findlibs()
 	filter { "platforms:linux*gl3" }
-		links { "GL", "GLEW", "glfw" }
+		links { "GL", "GLEW" }
+		if _OPTIONS["gfxlib"] == "glfw" then
+			links { "glfw" }
+		else
+			links { "SDL2" }
+		end
 	filter { "platforms:win*gl3" }
 		defines { "GLEW_STATIC" }
 	filter { "platforms:win-amd64-gl3" }
 		libdirs { path.join(_OPTIONS["glewdir"], "lib/Release/x64") }
 		libdirs { path.join(_OPTIONS["glfwdir"], "lib-vc2015") }
+		libdirs { path.join(_OPTIONS["sdl2dir"], "lib/x64") }
 	filter { "platforms:win-x86-gl3" }
 		libdirs { path.join(_OPTIONS["glewdir"], "lib/Release/Win32") }
+		libdirs { path.join(_OPTIONS["sdl2dir"], "lib/x86") }
 	filter { "platforms:win*gl3" }
-		links { "glew32s", "glfw3", "opengl32" }
+		links { "glew32s", "opengl32" }
+		if _OPTIONS["gfxlib"] == "glfw" then
+			links { "glfw3" }
+		else
+			links { "SDL2" }
+		end
 	filter { "platforms:*d3d9" }
 		links { "d3d9", "Xinput9_1_0" }
 	filter {}

skeleton/glfw.cpp

@@ -1,3 +1,5 @@
+#ifndef LIBRW_SDL2
+
 #include <rw.h>
 #include "skeleton.h"
 
@@ -257,3 +259,4 @@ SetMousePosition(int x, int y)
 }
 
 #endif
+#endif

skeleton/sdl2.cpp

@@ -0,0 +1,325 @@
+#ifdef LIBRW_SDL2
+
+#include <rw.h>
+#include "skeleton.h"
+
+using namespace sk;
+using namespace rw;
+
+#ifdef RW_OPENGL
+
+SDL_Window *window;
+
+static int keyCodeToSkKey(SDL_Keycode keycode) {
+	switch (keycode) {
+	case SDLK_SPACE: return ' ';
+	case SDLK_QUOTE: return '\'';
+	case SDLK_COMMA: return ',';
+	case SDLK_MINUS: return '-';
+	case SDLK_PERIOD: return '.';
+	case SDLK_SLASH: return '/';
+
+	case SDLK_0: return '0';
+	case SDLK_1: return '1';
+	case SDLK_2: return '2';
+	case SDLK_3: return '3';
+	case SDLK_4: return '4';
+	case SDLK_5: return '5';
+	case SDLK_6: return '6';
+	case SDLK_7: return '7';
+	case SDLK_8: return '8';
+	case SDLK_9: return '9';
+
+	case SDLK_SEMICOLON: return ';';
+	case SDLK_EQUALS: return '=';
+
+	case SDLK_a: return 'A';
+	case SDLK_b: return 'B';
+	case SDLK_c: return 'C';
+	case SDLK_d: return 'D';
+	case SDLK_e: return 'E';
+	case SDLK_f: return 'F';
+	case SDLK_g: return 'G';
+	case SDLK_h: return 'H';
+	case SDLK_i: return 'I';
+	case SDLK_j: return 'J';
+	case SDLK_k: return 'K';
+	case SDLK_l: return 'L';
+	case SDLK_m: return 'M';
+	case SDLK_n: return 'N';
+	case SDLK_o: return 'O';
+	case SDLK_p: return 'P';
+	case SDLK_q: return 'Q';
+	case SDLK_r: return 'R';
+	case SDLK_s: return 'S';
+	case SDLK_t: return 'T';
+	case SDLK_u: return 'U';
+	case SDLK_v: return 'V';
+	case SDLK_w: return 'W';
+	case SDLK_x: return 'X';
+	case SDLK_y: return 'Y';
+	case SDLK_z: return 'Z';
+
+	case SDLK_LEFTBRACKET: return '[';
+	case SDLK_BACKSLASH: return '\\';
+	case SDLK_RIGHTBRACKET: return ']';
+	case SDLK_BACKQUOTE: return '`';
+	case SDLK_ESCAPE: return KEY_ESC;
+	case SDLK_RETURN: return KEY_ENTER;
+	case SDLK_TAB: return KEY_TAB;
+	case SDLK_BACKSPACE: return KEY_BACKSP;
+	case SDLK_INSERT: return KEY_INS;
+	case SDLK_DELETE: return KEY_DEL;
+	case SDLK_RIGHT: return KEY_RIGHT;
+	case SDLK_DOWN: return KEY_DOWN;
+	case SDLK_UP: return KEY_UP;
+	case SDLK_PAGEUP: return KEY_PGUP;
+	case SDLK_PAGEDOWN: return KEY_PGDN;
+	case SDLK_HOME: return KEY_HOME;
+	case SDLK_END: return KEY_END;
+	case SDLK_CAPSLOCK: return KEY_CAPSLK;
+	case SDLK_SCROLLLOCK: return KEY_NULL;
+	case SDLK_NUMLOCKCLEAR: return KEY_NULL;
+	case SDLK_PRINTSCREEN: return KEY_NULL;
+	case SDLK_PAUSE: return KEY_NULL;
+
+	case SDLK_F1: return KEY_F1;
+	case SDLK_F2: return KEY_F2;
+	case SDLK_F3: return KEY_F3;
+	case SDLK_F4: return KEY_F4;
+	case SDLK_F5: return KEY_F5;
+	case SDLK_F6: return KEY_F6;
+	case SDLK_F7: return KEY_F7;
+	case SDLK_F8: return KEY_F8;
+	case SDLK_F9: return KEY_F9;
+	case SDLK_F10: return KEY_F10;
+	case SDLK_F11: return KEY_F11;
+	case SDLK_F12: return KEY_F12;
+	case SDLK_F13: return KEY_NULL;
+	case SDLK_F14: return KEY_NULL;
+	case SDLK_F15: return KEY_NULL;
+	case SDLK_F16: return KEY_NULL;
+	case SDLK_F17: return KEY_NULL;
+	case SDLK_F18: return KEY_NULL;
+	case SDLK_F19: return KEY_NULL;
+	case SDLK_F20: return KEY_NULL;
+	case SDLK_F21: return KEY_NULL;
+	case SDLK_F22: return KEY_NULL;
+	case SDLK_F23: return KEY_NULL;
+	case SDLK_F24: return KEY_NULL;
+
+	case SDLK_KP_0: return KEY_NULL;
+	case SDLK_KP_1: return KEY_NULL;
+	case SDLK_KP_2: return KEY_NULL;
+	case SDLK_KP_3: return KEY_NULL;
+	case SDLK_KP_4: return KEY_NULL;
+	case SDLK_KP_5: return KEY_NULL;
+	case SDLK_KP_6: return KEY_NULL;
+	case SDLK_KP_7: return KEY_NULL;
+	case SDLK_KP_8: return KEY_NULL;
+	case SDLK_KP_9: return KEY_NULL;
+	case SDLK_KP_DECIMAL: return KEY_NULL;
+	case SDLK_KP_DIVIDE: return KEY_NULL;
+	case SDLK_KP_MULTIPLY: return KEY_NULL;
+	case SDLK_KP_MINUS: return KEY_NULL;
+	case SDLK_KP_PLUS: return KEY_NULL;
+	case SDLK_KP_ENTER: return KEY_NULL;
+	case SDLK_KP_EQUALS: return KEY_NULL;
+
+	case SDLK_LSHIFT: return KEY_LSHIFT;
+	case SDLK_LCTRL: return KEY_LCTRL;
+	case SDLK_LALT: return KEY_LALT;
+	case SDLK_LGUI: return KEY_NULL;
+	case SDLK_RSHIFT: return KEY_RSHIFT;
+	case SDLK_RCTRL: return KEY_RCTRL;
+	case SDLK_RALT: return KEY_RALT;
+	case SDLK_RGUI: return KEY_NULL;
+	case SDLK_MENU: return KEY_NULL;
+	}
+	return KEY_NULL;
+}
+
+#if 0
+static void
+keypress(SDL_Window *window, int key, int scancode, int action, int mods)
+{
+	if(key >= 0 && key <= GLFW_KEY_LAST){
+		if(action == GLFW_RELEASE) KeyUp(keymap[key]);
+		else if(action == GLFW_PRESS)   KeyDown(keymap[key]);
+		else if(action == GLFW_REPEAT)  KeyDown(keymap[key]);
+	}
+}
+
+static void
+charinput(GLFWwindow *window, unsigned int c)
+{
+	EventHandler(CHARINPUT, (void*)(uintptr)c);
+}
+
+static void
+resize(GLFWwindow *window, int w, int h)
+{
+	rw::Rect r;
+	r.x = 0;
+	r.y = 0;
+	r.w = w;
+	r.h = h;
+	EventHandler(RESIZE, &r);
+}
+
+static void
+mousebtn(GLFWwindow *window, int button, int action, int mods)
+{
+	static int buttons = 0;
+	sk::MouseState ms;
+
+	switch(button){
+	case GLFW_MOUSE_BUTTON_LEFT:
+		if(action == GLFW_PRESS)
+			buttons |= 1;
+		else
+			buttons &= ~1;
+		break;
+	case GLFW_MOUSE_BUTTON_MIDDLE:
+		if(action == GLFW_PRESS)
+			buttons |= 2;
+		else
+			buttons &= ~2;
+		break;
+	case GLFW_MOUSE_BUTTON_RIGHT:
+		if(action == GLFW_PRESS)
+			buttons |= 4;
+		else
+			buttons &= ~4;
+		break;
+	}
+
+	sk::MouseState ms;
+	ms.buttons = buttons;
+	EventHandler(MOUSEBTN, &ms);
+}
+#endif
+
+enum mousebutton {
+BUTTON_LEFT = 0x1,
+BUTTON_MIDDLE = 0x2,
+BUTTON_RIGHT = 0x4,
+};
+
+int
+main(int argc, char *argv[])
+{
+	args.argc = argc;
+	args.argv = argv;
+
+	if(EventHandler(INITIALIZE, nil) == EVENTERROR)
+		return 0;
+
+	engineStartParams.width = sk::globals.width;
+	engineStartParams.height = sk::globals.height;
+	engineStartParams.windowtitle = sk::globals.windowtitle;
+	engineStartParams.window = &window;
+
+	if(EventHandler(RWINITIALIZE, nil) == EVENTERROR)
+		return 0;
+
+	float lastTime = SDL_GetTicks();
+	SDL_Event event;
+	int mouseButtons = 0;
+
+	SDL_StartTextInput();
+
+	while(!sk::globals.quit){
+		while(SDL_PollEvent(&event)){
+			switch(event.type){
+			case SDL_QUIT:
+				sk::globals.quit = true;
+				break;
+			case SDL_WINDOWEVENT:
+				switch (event.window.event) {
+				case SDL_WINDOWEVENT_RESIZED: {
+					rw::Rect r;
+					SDL_GetWindowPosition(window, &r.x, &r.y);
+					r.w = event.window.data1;
+					r.h = event.window.data2;
+					EventHandler(RESIZE, &r);
+					break;
+				}
+				}
+				break;
+			case SDL_KEYUP: {
+				int c = keyCodeToSkKey(event.key.keysym.sym);
+				EventHandler(KEYUP, &c);
+				break;
+			}
+			case SDL_KEYDOWN: {
+				int c = keyCodeToSkKey(event.key.keysym.sym);
+				EventHandler(KEYDOWN, &c);
+				break;
+			}
+			case SDL_TEXTINPUT: {
+				char *c = event.text.text;
+				while (int ci = *c) {
+					EventHandler(CHARINPUT, (void*)(uintptr)ci);
+					++c;
+				}
+				break;
+			}
+			case SDL_MOUSEMOTION: {
+				sk::MouseState ms;
+				ms.posx = event.motion.x;
+				ms.posy = event.motion.y;
+				EventHandler(MOUSEMOVE, &ms);
+				break;
+			}
+			case SDL_MOUSEBUTTONDOWN: {
+				switch (event.button.button) {
+				case SDL_BUTTON_LEFT: mouseButtons |= BUTTON_LEFT; break;
+				case SDL_BUTTON_MIDDLE: mouseButtons |= BUTTON_MIDDLE; break;
+				case SDL_BUTTON_RIGHT: mouseButtons |= BUTTON_RIGHT; break;
+				}
+				sk::MouseState ms;
+				ms.buttons = mouseButtons;
+				EventHandler(MOUSEBTN, &ms);
+				break;
+			}
+			case SDL_MOUSEBUTTONUP: {
+				switch (event.button.button) {
+				case SDL_BUTTON_LEFT: mouseButtons &= ~BUTTON_LEFT; break;
+				case SDL_BUTTON_MIDDLE: mouseButtons &= ~BUTTON_MIDDLE; break;
+				case SDL_BUTTON_RIGHT: mouseButtons &= ~BUTTON_RIGHT; break;
+				}
+				sk::MouseState ms;
+				ms.buttons = mouseButtons;
+				EventHandler(MOUSEBTN, &ms);
+				break;
+			}
+			}
+		}
+		float currTime  = SDL_GetTicks();
+		float timeDelta = (currTime - lastTime) * 0.001f;
+
+		EventHandler(IDLE, &timeDelta);
+
+		lastTime = currTime;
+	}
+
+	SDL_StopTextInput();
+
+	EventHandler(RWTERMINATE, nil);
+
+	return 0;
+}
+
+namespace sk {
+
+void
+SetMousePosition(int x, int y)
+{
+	SDL_WarpMouseInWindow(*engineStartParams.window, x, y);
+}
+
+}
+
+#endif
+#endif

src/gl/gl3device.cpp

@@ -12,7 +12,11 @@
 #include "../rwobjects.h"
 #ifdef RW_OPENGL
 #include <GL/glew.h>
+#ifdef LIBRW_SDL2
+#include <SDL.h>
+#else
 #include <GLFW/glfw3.h>
+#endif
 #include "rwgl3.h"
 #include "rwgl3shader.h"
 #include "rwgl3impl.h"
@@ -24,7 +28,12 @@ namespace gl3 {
 
 struct GlGlobals
 {
+#ifdef LIBRW_SDL2
+	SDL_Window *window;
+	SDL_GLContext glcontext;
+#else
 	GLFWwindow *window;
+#endif
 	int presentWidth, presentHeight;
 } glGlobals;
 
@@ -625,7 +634,11 @@ static void
 showRaster(Raster *raster)
 {
 	// TODO: do this properly!
+#ifdef LIBRW_SDL2
+	SDL_GL_SwapWindow(glGlobals.window);
+#else
 	glfwSwapBuffers(glGlobals.window);
+#endif
 }
 
 static void
@@ -701,7 +714,11 @@ beginUpdate(Camera *cam)
 	}
 
 	int w, h;
+#ifdef LIBRW_SDL2
+	SDL_GetWindowSize(glGlobals.window, &w, &h);
+#else
 	glfwGetWindowSize(glGlobals.window, &w, &h);
+#endif
 	if(w != glGlobals.presentWidth || h != glGlobals.presentHeight){
 		glViewport(0, 0, w, h);
 		glGlobals.presentWidth = w;
@@ -709,6 +726,74 @@ beginUpdate(Camera *cam)
 	}
 }
 
+#ifdef LIBRW_SDL2
+static int
+openSDL2(EngineStartParams *startparams)
+{
+	if (!startparams){
+		RWERROR((ERR_GENERAL, "startparams invalid"));
+		return 0;
+	}
+
+	GLenum status;
+	SDL_Window *win;
+	SDL_GLContext ctx;
+
+	/* Init SDL */
+	if(SDL_InitSubSystem(SDL_INIT_VIDEO)){
+		RWERROR((ERR_ENGINEOPEN, SDL_GetError()));
+		return 0;
+	}
+	SDL_ClearHints();
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
+	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 0);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+
+	int flags = SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL;
+	if (startparams->fullscreen)
+		flags |= SDL_WINDOW_FULLSCREEN;
+	win = SDL_CreateWindow(startparams->windowtitle, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, startparams->width, startparams->height, flags);
+	if(win == nil){
+		RWERROR((ERR_ENGINEOPEN, SDL_GetError()));
+		SDL_QuitSubSystem(SDL_INIT_VIDEO);
+		return 0;
+	}
+	ctx = SDL_GL_CreateContext(win);
+
+	/* Init GLEW */
+	glewExperimental = GL_TRUE;
+	status = glewInit();
+	if(status != GLEW_OK){
+        	RWERROR((ERR_ENGINEOPEN, glewGetErrorString(status)));
+        	SDL_GL_DeleteContext(ctx);
+        	SDL_DestroyWindow(win);
+        	SDL_QuitSubSystem(SDL_INIT_VIDEO);
+        	return 0;
+	}
+	if(!GLEW_VERSION_3_3){
+		RWERROR((ERR_VERSION, "OpenGL 3.3 needed"));
+		SDL_GL_DeleteContext(ctx);
+		SDL_DestroyWindow(win);
+		SDL_QuitSubSystem(SDL_INIT_VIDEO);
+		return 0;
+	}
+	glGlobals.window = win;
+	glGlobals.glcontext = ctx;
+	*startparams->window = win;
+	return 1;
+}
+
+static int
+closeSDL2(void)
+{
+	SDL_GL_DeleteContext(glGlobals.glcontext);
+	SDL_DestroyWindow(glGlobals.window);
+	SDL_QuitSubSystem(SDL_INIT_VIDEO);
+	return 1;
+}
+#else
 static int
 openGLFW(EngineStartParams *startparams)
 {
@@ -732,6 +817,14 @@ openGLFW(EngineStartParams *startparams)
 		glfwTerminate();
 		return 0;
 	}
+	if(startparams->fullscreen){
+		int nbmonitors;
+		auto monitors = glfwGetMonitors(&nbmonitors);
+        	if (nbmonitors){
+			const GLFWvidmode* mode = glfwGetVideoMode(monitors[0]);
+            		glfwSetWindowMonitor(win, monitors[0], 0, 0, mode->width, mode->height, mode->refreshRate);
+        	}
+    	}
 	glfwMakeContextCurrent(win);
 
 	/* Init GLEW */
@@ -761,6 +854,7 @@ closeGLFW(void)
 	glfwTerminate();
 	return 1;
 }
+#endif
 
 static int
 initOpenGL(void)
@@ -836,9 +930,17 @@ deviceSystem(DeviceReq req, void *arg0)
 {
 	switch(req){
 	case DEVICEOPEN:
+#ifdef LIBRW_SDL2
+		return openSDL2((EngineStartParams*)arg0);
+#else
 		return openGLFW((EngineStartParams*)arg0);
+#endif
 	case DEVICECLOSE:
+#ifdef LIBRW_SDL2
+		return closeSDL2();
+#else
 		return closeGLFW();
+#endif
 
 	case DEVICEINIT:
 		return initOpenGL();

src/gl/rwgl3.h

@@ -1,15 +1,24 @@
 #ifdef RW_GL3
 #include <GL/glew.h>
+#ifdef LIBRW_SDL2
+#include <SDL.h>
+#else
 #include <GLFW/glfw3.h>
 #endif
+#endif
 
 namespace rw {
 
 #ifdef RW_GL3
 struct EngineStartParams
 {
+#ifdef LIBRW_SDL2
+	SDL_Window **window;
+#else
 	GLFWwindow **window;
+#endif
 	int width, height;
+	bool32 fullscreen;
 	const char *windowtitle;
 };
 #endif