commit aaccf3d903fd348028965bb37bdad53d882783be
Author: Tim Blume <tb@ciphron.de>
Date:   Fri Oct 1 20:36:52 2021 +0200

    initial

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f47cb20
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.out
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..139beb5
--- /dev/null
+++ b/main.c
@@ -0,0 +1,70 @@
+// To compile with gcc:  (tested on Ubuntu 14.04 64bit):
+//	 g++ sdl2_opengl.cpp -lSDL2 -lGL
+// To compile with msvc: (tested on Windows 7 64bit)
+//   cl sdl2_opengl.cpp /I C:\sdl2path\include /link C:\path\SDL2.lib C:\path\SDL2main.lib /SUBSYSTEM:CONSOLE /NODEFAULTLIB:libcmtd.lib opengl32.lib
+
+#include <stdio.h>
+#include <stdint.h>
+#include <assert.h>
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_opengl.h>
+#include <GL/gl.h>
+
+typedef int32_t i32;
+typedef uint32_t u32;
+typedef int32_t b32;
+
+#define WinWidth 1000
+#define WinHeight 1000
+
+int main (int ArgCount, char **Args)
+{
+
+  u32 WindowFlags = SDL_WINDOW_OPENGL;
+  SDL_Window *Window = SDL_CreateWindow("OpenGL Test", 0, 0, WinWidth, WinHeight, WindowFlags);
+  assert(Window);
+  SDL_GLContext Context = SDL_GL_CreateContext(Window);
+  
+  b32 Running = 1;
+  b32 FullScreen = 0;
+  while (Running)
+  {
+    SDL_Event Event;
+    while (SDL_PollEvent(&Event))
+    {
+      if (Event.type == SDL_KEYDOWN)
+      {
+        switch (Event.key.keysym.sym)
+        {
+          case SDLK_ESCAPE:
+            Running = 0;
+            break;
+          case 'f':
+            FullScreen = !FullScreen;
+            if (FullScreen)
+            {
+              SDL_SetWindowFullscreen(Window, WindowFlags | SDL_WINDOW_FULLSCREEN_DESKTOP);
+            }
+            else
+            {
+              SDL_SetWindowFullscreen(Window, WindowFlags);
+            }
+            break;
+          default:
+            break;
+        }
+      }
+      else if (Event.type == SDL_QUIT)
+      {
+        Running = 0;
+      }
+    }
+
+    glViewport(0, 0, WinWidth, WinHeight);
+    glClearColor(1.f, 0.f, 1.f, 0.f);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    SDL_GL_SwapWindow(Window);
+  }
+  return 0;
+}