Window adjustments and fixes for all backends

src/desktop/backends/glfw2.c

@@ -3,6 +3,7 @@
 
 #ifdef _WIN32
 #include <windows.h>
+#include <mmsystem.h>
 #endif
 
 #ifdef ENABLE_SW_RENDERER
@@ -39,9 +40,29 @@ bool platformGetScaledWindowSize(int32_t* outW, int32_t* outH) {
     return platformGetWindowSize(outW, outH);
 }
 
+static void platformGetTrueDesktopSize(int* outW, int* outH) {
+    GLFWvidmode list[256];
+    int numModes = glfwGetVideoModes(list, 256);
+
+    if (numModes > 0) {
+        *outW = list[numModes - 1].Width;
+        *outH = list[numModes - 1].Height;
+    } else {
+        GLFWvidmode mode;
+        glfwGetDesktopMode(&mode);
+        *outW = mode.Width;
+        *outH = mode.Height;
+    }
+}
+
 void platformSetWindowSize(int32_t width, int32_t height) {
     if (width <= 0 || height <= 0) return;
+    PLATFORM_CACHE_WINDOW_SIZE(width, height);
     glfwSetWindowSize(width, height);
+
+    int desktopW, desktopH;
+    platformGetTrueDesktopSize(&desktopW, &desktopH);
+    glfwSetWindowPos(((desktopW - width) / 2), ((desktopH - height) / 2));
 }
 
 void platformGetMousePos(double *xPos, double *yPos) {
@@ -139,8 +160,8 @@ static void GLFWCALL mouseButtonCallback(int button, int action) {
     else if (action == GLFW_RELEASE) RunnerMouse_onButtonUp(g_runner->mouse, gmlButton);
 }
 
-static int g_last_wheel_pos = 0;
 static void GLFWCALL scrollCallback(int pos) {
+    static int g_last_wheel_pos = 0;
     double yoffset = (double)(pos - g_last_wheel_pos);
     g_last_wheel_pos = pos;
     if (g_runner) RunnerMouse_onWheel(g_runner->mouse, yoffset);
@@ -151,7 +172,9 @@ bool platformInit(int32_t reqW, int32_t reqH, const char *title, bool headless)
         fprintf(stderr, "Headless mode is not supported with GLFW 2\n");
         return false;
     }
-
+#ifdef _WIN32
+    timeBeginPeriod(1);
+#endif
 #ifdef GLFW_OPENGL_VERSION_MAJOR
     if (gfx == SOFTWARE) {
         glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 1);
@@ -177,6 +200,9 @@ bool platformInit(int32_t reqW, int32_t reqH, const char *title, bool headless)
     // Init GLFW
     if (!glfwInit()) {
         fprintf(stderr, "Failed to initialize GLFW\n");
+#ifdef _WIN32
+        timeEndPeriod(1);
+#endif
         return false;
     }
 
@@ -196,12 +222,27 @@ bool platformInit(int32_t reqW, int32_t reqH, const char *title, bool headless)
     }
 #endif
 
-    int window = glfwOpenWindow(reqW, reqH, 8, 8, 8, 8, 24, 8, GLFW_WINDOW);
+    int desktopW, desktopH;
+    platformGetTrueDesktopSize(&desktopW, &desktopH);
+
+    int finalW = reqW;
+    int finalH = reqH;
+    if (reqW >= desktopW || reqH >= desktopH) {
+        PLATFORM_GET_BEST_FIT_RES(reqW, reqH, desktopW, desktopH, finalW, finalH);
+        fprintf(stderr, "Warning: Requested resolution %dx%d is bigger than the screen, adjusting to %dx%d\n",
+                reqW, reqH, finalW, finalH);
+    }
+
+    int window = glfwOpenWindow(finalW, finalH, 8, 8, 8, 8, 24, 8, GLFW_WINDOW);
     if (!window) {
         fprintf(stderr, "Failed to create GLFW window\n");
         glfwTerminate();
+#ifdef _WIN32
+        timeEndPeriod(1);
+#endif
         return false;
     }
+    glfwSetWindowPos(((desktopW - finalW) / 2), ((desktopH - finalH) / 2));
 
     glfwSetWindowTitle(title);
 
@@ -220,14 +261,27 @@ bool platformInit(int32_t reqW, int32_t reqH, const char *title, bool headless)
 void platformExit(void) {
     glfwCloseWindow();
     glfwTerminate();
+#ifdef _WIN32
+    timeEndPeriod(1);
+#endif
 }
 
+// GLFW2's mouse cursor locks the mouse position when it's invisible on Windows.
+// This just makes it visible/invisible as intended.
 static void platformSetCursor(int32_t cursorType) {
     // GLFW2 only supports showing/hiding
     if (cursorType == GML_CR_NONE) {
+#ifdef _WIN32
+        while (ShowCursor(FALSE) >= 0);
+#else
         glfwDisable(GLFW_MOUSE_CURSOR);
+#endif
     } else {
+#ifdef _WIN32
+        while (ShowCursor(TRUE) < 0);
+#else
         glfwEnable(GLFW_MOUSE_CURSOR);
+#endif
     }
 }
 
@@ -269,7 +323,7 @@ void platformSwapBuffers(void) {
 
 void *platformGetProcAddress(const char *name) {
 #ifdef _WIN32
-    // glfw2's glfwGetProcAddress is broken on Windows.
+    // GLFW2's glfwGetProcAddress is broken on Windows.
     // This just implements it in a way that's fixed so it can be passed to GLAD.
     void *ret = (void *)wglGetProcAddress(name);
     // Fallback for driver-specific error codes and legacy OpenGL core functions.
@@ -292,7 +346,10 @@ bool platformHandleEvents(void) {
 }
 
 void platformSleepUntil(uint64_t time) {
-    double remaining = ((int64_t)time - nowNanos()) / 1000000000.0;
+    int64_t delta = (int64_t)time - nowNanos();
+    if (delta <= 0) return; // If the target timestamp is already in the past, skip sleeping
+
+    double remaining = delta / 1000000000.0;
     if (remaining > 0.002) // glfwSleep takes seconds as a double
         glfwSleep(remaining - 0.001);
 

src/desktop/backends/glfw3.c

@@ -5,6 +5,7 @@
 
 #ifdef _WIN32
 #include <windows.h>
+#include <mmsystem.h>
 #endif
 
 #ifdef ENABLE_SW_RENDERER
@@ -57,13 +58,20 @@ bool platformGetScaledWindowSize(int32_t* outW, int32_t* outH) {
 }
 
 void platformSetWindowSize(int32_t width, int32_t height) {
-    if (width <= 0 || height <= 0) return;
-    if (!window) return;
+    if (width <= 0 || height <= 0 || !window) return;
+    if (glfwGetWindowAttrib(window, GLFW_MAXIMIZED)) return;
+    PLATFORM_CACHE_WINDOW_SIZE(width, height);
+
     float xs = 1.0f, ys = 1.0f;
     glfwGetWindowContentScale(window, &xs, &ys);
     int logicalW, logicalH;
     framebufferToLogical(xs, ys, width, height, &logicalW, &logicalH);
     glfwSetWindowSize(window, logicalW, logicalH);
+
+    const GLFWvidmode* mode = glfwGetVideoMode(glfwGetPrimaryMonitor());
+    if (mode != NULL) {
+        glfwSetWindowPos(window, ((mode->width - logicalW) / 2), ((mode->height - logicalH) / 2));
+    }
 }
 
 void platformGetMousePos(double *xPos, double *yPos) {
@@ -72,7 +80,7 @@ void platformGetMousePos(double *xPos, double *yPos) {
 }
 
 static bool platformGetWindowFocus(void) {
-    return glfwGetWindowAttrib(window, GLFW_FOCUSED) != 0;
+    return glfwGetWindowAttrib(window, GLFW_FOCUSED);
 }
 
 static void glfwErrorCallback(int code, const char* description) {
@@ -170,10 +178,16 @@ static void scrollCallback(GLFWwindow* window, double xoffset, double yoffset) {
 }
 
 bool platformInit(int32_t reqW, int32_t reqH, const char *title, bool headless) {
+#ifdef _WIN32
+    timeBeginPeriod(1);
+#endif
     // Init GLFW
     glfwSetErrorCallback(glfwErrorCallback);
     if (!glfwInit()) {
         fprintf(stderr, "Failed to initialize GLFW\n");
+#ifdef _WIN32
+        timeEndPeriod(1);
+#endif
         return false;
     }
 
@@ -224,10 +238,26 @@ bool platformInit(int32_t reqW, int32_t reqH, const char *title, bool headless)
     if (headless)
         glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
 
-    window = glfwCreateWindow(reqW, reqH, title, nullptr, nullptr);
+    int finalW = reqW;
+    int finalH = reqH;
+    GLFWmonitor* primaryMonitor = glfwGetPrimaryMonitor();
+    if (primaryMonitor) {
+        int workX, workY, workW, workH;
+        glfwGetMonitorWorkarea(primaryMonitor, &workX, &workY, &workW, &workH);
+        if (reqW >= workW || reqH >= workH) {
+            PLATFORM_GET_BEST_FIT_RES(reqW, reqH, workW, workH, finalW, finalH);
+            fprintf(stderr, "Warning: Requested resolution %dx%d is bigger than the screen, adjusting to %dx%d\n",
+                    reqW, reqH, finalW, finalH);
+        }
+    }
+
+    window = glfwCreateWindow(finalW, finalH, title, nullptr, nullptr);
     if (!window) {
         fprintf(stderr, "Failed to create GLFW window\n");
         glfwTerminate();
+#ifdef _WIN32
+        timeEndPeriod(1);
+#endif
         return false;
     }
 
@@ -236,7 +266,7 @@ bool platformInit(int32_t reqW, int32_t reqH, const char *title, bool headless)
 
     // If we don't do this, the window will be larger than it should be if you are using Wayland fractional scaling
     // We set the window size AFTER the window creation so we can use glfwGetWindowContentScale
-    platformSetWindowSize(reqW, reqH);
+    platformSetWindowSize(finalW, finalH);
 
     // Set up keyboard input
     glfwSetKeyCallback(window, keyCallback);
@@ -251,6 +281,9 @@ bool platformInit(int32_t reqW, int32_t reqH, const char *title, bool headless)
 void platformExit(void) {
     glfwDestroyWindow(window);
     glfwTerminate();
+#ifdef _WIN32
+    timeEndPeriod(1);
+#endif
 }
 
 static void platformSetCursor(int32_t cursorType) {

src/desktop/backends/sdl1.c

@@ -41,9 +41,10 @@ bool platformGetScaledWindowSize(int32_t* outW, int32_t* outH) {
 
 void platformSetWindowSize(int32_t width, int32_t height) {
     if (width <= 0 || height <= 0) return;
+    PLATFORM_CACHE_WINDOW_SIZE(width, height);
     fbWidth = width;
     fbHeight = height;
-    scr = SDL_SetVideoMode(width, height, 0, (gfx == SOFTWARE ? 0 : SDL_OPENGL) | SDL_RESIZABLE);
+    scr = SDL_SetVideoMode(fbWidth, fbHeight, 0, (gfx == SOFTWARE ? 0 : SDL_OPENGL) | SDL_RESIZABLE);
 }
 
 void platformGetMousePos(double *xPos, double *yPos) {
@@ -59,30 +60,71 @@ static bool platformGetWindowFocus(void) {
     return SDL_GetAppState() & SDL_APPINPUTFOCUS;
 }
 
+// SDL1.2 redirects stdio messages to stdout.txt and stderr.txt on Windows in SDL_main
+// So set the env variable to 0 before it reaches out main so there's no need to set it manually
+#ifdef _WIN32
+#if defined(__GNUC__) || defined(__clang__)
+__attribute__((constructor)) static void platformDisableRedirect(void) {
+    SDL_putenv("SDL_STDIO_REDIRECT=0");
+}
+#elif defined(_MSC_VER)
+static int platformDisableRedirect(void) {
+    SDL_putenv("SDL_STDIO_REDIRECT=0");
+    return 0;
+}
+#pragma section(".CRT$XCU", read)
+__declspec(allocate(".CRT$XCU")) static int (*pDisableRedirect)(void) = platformDisableRedirect;
+#endif
+#endif
+
 bool platformInit(int32_t reqW, int32_t reqH, const char *title, bool headless) {
     if (headless && gfx != SOFTWARE) {
         fprintf(stderr, "Headless mode on SDL 1.2 requires the software renderer!\n");
         return false;
     }
 
+#if SDL_VERSION_ATLEAST(1, 2, 10) // Old SDL1.2: Center pos doesn't matter assuming it's running in low res
+    SDL_putenv("SDL_VIDEO_WINDOW_POS=center");
+#endif
+
     // Init SDL
     if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER)) {
         fprintf(stderr, "Failed to initialize SDL\n");
         return false;
     }
 
-    fbWidth = reqW;
-    fbHeight = reqH;
-    if(!headless) {
+    int finalW = reqW;
+    int finalH = reqH;
+#if SDL_VERSION_ATLEAST(1, 2, 10)
+    const SDL_VideoInfo* info = SDL_GetVideoInfo();
+    if (info && (reqW >= info->current_w || reqH >= info->current_h)) {
+        PLATFORM_GET_BEST_FIT_RES(reqW, reqH, info->current_w, info->current_h, finalW, finalH);
+        fprintf(stderr, "Warning: Requested resolution %dx%d is bigger than the screen, adjusting to %dx%d\n",
+                reqW, reqH, finalW, finalH);
+    }
+#else
+    // Old SDL1.2: Set a period appropriate resolution as fallback
+    int oldW = 1024;
+    int oldH = 768;
+    if (reqW >= oldW || reqH >= oldH) {
+        PLATFORM_GET_BEST_FIT_RES(reqW, reqH, oldW, oldH, finalW, finalH);
+        fprintf(stderr, "Warning: Requested resolution %dx%d is bigger than the screen, adjusting to %dx%d\n",
+                reqW, reqH, finalW, finalH);
+    }
+#endif
+
+    fbWidth = finalW;
+    fbHeight = finalH;
+    if (!headless) {
         scr = SDL_SetVideoMode(fbWidth, fbHeight, 0, (gfx == SOFTWARE ? 0 : SDL_OPENGL) | SDL_RESIZABLE);
         if (!scr && gfx == SOFTWARE) {
             SDL_Rect** modes = SDL_ListModes(NULL, SDL_FULLSCREEN);
             if (modes && modes != (SDL_Rect**) -1 && modes[0]) {
                 fprintf(stderr, "Warning: %dx%d unavailable, falling back to %dx%d: %s\n",
-                        reqW, reqH, modes[0]->w, modes[0]->h, SDL_GetError());
-                scr = SDL_SetVideoMode(modes[0]->w, modes[0]->h, 0, 0);
+                        fbWidth, fbHeight, modes[0]->w, modes[0]->h, SDL_GetError());
                 fbWidth = modes[0]->w;
                 fbHeight = modes[0]->h;
+                scr = SDL_SetVideoMode(fbWidth, fbHeight, 0, 0);
             }
         }
         if (!scr) {
@@ -217,21 +259,30 @@ static int32_t SDLMouseButtonToGml(int sdlButton) {
 bool platformHandleEvents(void) {
     SDL_Event e;
     while (SDL_PollEvent(&e)) {
+        switch (e.type) {
+            default:
+                if (InputRecording_isPlaybackActive(globalInputRecording)) continue;
+                break;
+            case SDL_VIDEORESIZE:
+            case SDL_QUIT:
+                break;
+        }
         switch(e.type) {
             case SDL_KEYDOWN:
+                // SDL1.2 needs to manually intercept Alt+F4 to exit properly
+                if (e.key.keysym.sym == SDLK_F4 && (e.key.keysym.mod & KMOD_ALT)) {
+                    return true;
+                }
                 // During playback, suppress real keyboard input
-                if (InputRecording_isPlaybackActive(globalInputRecording)) break;
                 RunnerKeyboard_onKeyDown(g_runner->keyboard, SDLKeyToGml(e.key.keysym.sym));
                 if (e.key.keysym.unicode != 0)
                     RunnerKeyboard_onCharacter(g_runner->keyboard, e.key.keysym.unicode);
                 break;
             case SDL_KEYUP:
                 // During playback, suppress real keyboard input
-                if (InputRecording_isPlaybackActive(globalInputRecording)) break;
                 RunnerKeyboard_onKeyUp(g_runner->keyboard, SDLKeyToGml(e.key.keysym.sym));
                 break;
             case SDL_MOUSEBUTTONDOWN:
-                if (InputRecording_isPlaybackActive(globalInputRecording)) break;
                 if (e.button.button == SDL_BUTTON_WHEELUP) {
                     RunnerMouse_onWheel(g_runner->mouse, 1.0);
                 } else if (e.button.button == SDL_BUTTON_WHEELDOWN) {
@@ -242,7 +293,6 @@ bool platformHandleEvents(void) {
                 }
                 break;
             case SDL_MOUSEBUTTONUP:
-                if (InputRecording_isPlaybackActive(globalInputRecording)) break;
                 if (e.button.button != SDL_BUTTON_WHEELUP && e.button.button != SDL_BUTTON_WHEELDOWN) {
                     int32_t gmlBtn = SDLMouseButtonToGml(e.button.button);
                     if (gmlBtn >= 0) RunnerMouse_onButtonUp(g_runner->mouse, gmlBtn);