Add ktx

2026-06-14 19:09:18 +01:00
parent 14bd1a9271
commit 13fa90a0e9
3958 changed files with 999286 additions and 4 deletions
@@ -0,0 +1,138 @@
+/* -*- tab-width: 4; -*- */
+/* vi: set sw=2 ts=4 expandtab: */
+
+/* $Id: f63e0a9e6eed51ed84a8eea1eff0708c8a6af22b $ */
+
+/*
+ * Copyright 2015-2020 Mark Callow.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @internal
+ * @file
+ * @~English
+ *
+ * @brief Base class for SDL applications.
+ */
+
+#include "AppBaseSDL.h"
+#include <iomanip>
+#include <sstream>
+#include <iostream>
+
+bool
+AppBaseSDL::initialize(Args& /*args*/)
+{
+    const char* basePath = SDL_GetBasePath();
+    // SDL_GetBasePath returns directory of the app, except for
+    // iOS & macOS app bundles where it returns the Resources
+    // directory.
+    if (basePath == NULL)
+        basePath = SDL_strdup("./");
+    sBasePath = basePath;
+#if SDL_PLATFORM_LINUX
+    // TODO figure out best way to handle these resources
+    sBasePath += "../resources/";
+#endif
+#if SDL_PLATFORM_WINDOWS
+    // Ditto
+    sBasePath += "resources/";
+#endif
+    return true;
+}
+
+
+void
+AppBaseSDL::initializeFPSTimer()
+{
+    lastFrameTime = 0;
+    fpsCounter.numFrames = 0;
+    fpsCounter.lastFPS = 0;
+    startTicks = fpsCounter.startTicks = SDL_GetPerformanceCounter();
+}
+
+
+void
+AppBaseSDL::finalize() {
+    
+}
+
+
+bool
+AppBaseSDL::doEvent(SDL_Event* event)
+{
+    switch (event->type) {
+      case SDL_EVENT_QUIT:
+        finalize();
+        exit(0);
+    }
+    return true;
+}
+
+
+void
+AppBaseSDL::onFPSUpdate()
+{
+    
+}
+
+
+//  Protected, non-virtual
+void
+AppBaseSDL::drawFrame()
+{
+    ticks_t ticks = SDL_GetPerformanceCounter();
+    Uint64 tps = SDL_GetPerformanceFrequency();
+    uint32_t msTicksSinceStart = (uint32_t)((ticks - startTicks) * 1000 / tps);
+
+    drawFrame(msTicksSinceStart);
+
+    ticks_t endTicks = SDL_GetPerformanceCounter();
+    lastFrameTime = (1000.0f * (endTicks - ticks)) / tps;
+    fpsCounter.numFrames++;
+    if (endTicks - fpsCounter.startTicks > tps) {
+        fpsCounter.lastFPS = (float)(fpsCounter.numFrames * tps)
+                             / (endTicks - fpsCounter.startTicks);
+        onFPSUpdate(); // Notify listeners that fps value has been updated.
+        fpsCounter.startTicks = endTicks;
+        fpsCounter.numFrames = 0;
+    }
+}
+
+//----------------------------------------------------------------------
+//  Window title and text overlay functions
+//----------------------------------------------------------------------
+
+
+void
+AppBaseSDL::setAppTitle(const char* const szExtra)
+{
+    appTitle = name();
+    if (szExtra != NULL && szExtra[0] != '\0') {
+        appTitle += ": ";
+        appTitle += szExtra;
+    }
+    setWindowTitle();
+}
+
+
+void
+AppBaseSDL::setWindowTitle()
+{
+    std::stringstream ss;
+    std::string wt;
+
+    ss << std::fixed << std::setprecision(2)
+       << lastFrameTime << "ms (" << fpsCounter.lastFPS << " fps)" << " ";
+    wt = ss.str();
+    wt += appTitle;
+    SDL_SetWindowTitle(pswMainWindow, wt.c_str());
+}
+
+
+const char* appName()
+{
+    return theApp->name();
+}
+