Display

src/display/CMakeLists.txt

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+# Copyright (c) 2025 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    Display.cpp
+)

src/display/Display.cpp

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+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Display.hpp"
+#include "engine/Engine.hpp"
+
+using namespace Dawn;
+
+Display::Display(void) :
+  #if DAWN_SDL2
+    glContext(nullptr),
+    window(nullptr)
+  #endif
+{
+  #if DAWN_SDL2
+    uint32_t flags = SDL_INIT_VIDEO;
+    #if DAWN_SDL2_GAMEPAD
+      flags |= SDL_INIT_GAMECONTROLLER | SDL_INIT_JOYSTICK;
+    #endif
+
+    if(SDL_Init(flags) != 0) {
+      throw "Failed to initialize SDL2";
+    }
+    
+    // Set OpenGL Attributes
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+
+    // Create window
+    this->window = SDL_CreateWindow(
+      "Dawn",
+      SDL_WINDOWPOS_CENTERED,
+      SDL_WINDOWPOS_CENTERED,
+      DEFAULT_WIDTH,
+      DEFAULT_HEIGHT,
+      SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI | 
+      SDL_WINDOW_SHOWN
+    );
+    if(!this->window) {
+      throw "Failed to create SDL2 window";
+    }
+
+    // Create OpenGL context
+    this->glContext = SDL_GL_CreateContext(this->window);
+    if(!this->glContext) {
+      throw "Failed to create OpenGL context";
+    }
+
+    // Setup GL
+    SDL_GL_SetSwapInterval(1);// Enable vsync
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_LIGHTING);// PSP defaults this on?
+    glShadeModel(GL_SMOOTH);// Fixes color on PSP?
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    glPixelStorei(GL_PACK_ALIGNMENT, 1);
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+    glEnableClientState(GL_COLOR_ARRAY);// TODO: every frame on PSP?
+    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+    glEnableClientState(GL_VERTEX_ARRAY);
+  #else
+    #error "No display platform defined"
+  #endif
+}
+
+void Display::update(void) {
+  #if DAWN_SDL2
+    SDL_Event event;
+    while(SDL_PollEvent(&event)) {
+      switch(event.type) {
+        case SDL_QUIT: {
+          Engine::getInstance()->console.exec("exit");
+          break;
+        }
+
+        case SDL_WINDOWEVENT: {
+          switch(event.window.event) {
+            case SDL_WINDOWEVENT_CLOSE: {
+              Engine::getInstance()->console.exec("exit");
+              break;
+            }
+
+            default: {
+              break;
+            }
+          }
+          break;
+        }
+
+        default: {
+          break;
+        }
+      }
+    }
+
+    SDL_GL_MakeCurrent(this->window, this->glContext);
+
+    glViewport(0, 0, DEFAULT_WIDTH, DEFAULT_HEIGHT);
+
+    SDL_GL_SwapWindow(this->window);
+  #endif
+}
+
+Display::~Display(void) {
+  #if DAWN_SDL2
+    if(this->glContext) {
+      SDL_GL_DeleteContext(this->glContext);
+      this->glContext = nullptr;
+    }
+
+    if(this->window) {
+      SDL_DestroyWindow(this->window);
+      this->window = nullptr;
+    }
+
+    SDL_Quit();
+  #endif
+}

src/display/Display.hpp

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+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawn.hpp"
+
+namespace Dawn {
+  struct Display {
+    private:
+      #if DAWN_SDL2
+        SDL_Window* window;
+        SDL_GLContext glContext;
+      #endif
+
+    public:
+      static constexpr uint32_t DEFAULT_WIDTH = 800;
+      static constexpr uint32_t DEFAULT_HEIGHT = 600;
+
+      /**
+       * Display constructor
+       */
+      Display(void);
+
+      /**
+       * Update the display (swap buffers, etc.)
+       */
+      void update(void);
+
+      /**
+       * Display destructor
+       */
+      ~Display(void);
+  };
+}