created a basic gl window, implemented gl/err.c skeleton

diff --git a/gl/main.c b/gl/main.c
index 0d07da1..7d2c057 100644 (file)
--- a/gl/main.c
+++ b/gl/main.c
@@ -5,6 +5,8 @@
 
 static SDL_Window *window = NULL;
 static SDL_GLContext *context = NULL;
+static int screen_width = 1280;
+static int screen_height = 720;
 
 static bool init()
 {
@@ -15,8 +17,8 @@ static bool init()
                return false;
        }
 
-       window = SDL_CreateWindow("csrpg", SDL_WINDOWPOS_CENTERED,
-                        SDL_WINDOWPOS_CENTERED, 512, 512, SDL_WINDOW_OPENGL);
+       window = SDL_CreateWindow("csrpg - opengl", SDL_WINDOWPOS_CENTERED,
+                        SDL_WINDOWPOS_CENTERED, screen_width, screen_height, SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE);
 
        if (window == NULL){
                printf("SDL couldn't make an OpenGL window! SDL_Error: %s\n", SDL_GetError());
@@ -37,6 +39,7 @@ static bool init()
 
        /* syncing the buffer swap with the monitor's vertical refresh */
        SDL_GL_SetSwapInterval(1);
+       glViewport(0, 0, screen_width, screen_height);
 
        glewExperimental = GL_TRUE;
        glewInit();
@@ -44,23 +47,38 @@ static bool init()
        return true;
 }
 
+static void render()
+{
+       glClearColor(0.2, 0.3, 0.3, 1.0);
+       glClear(GL_COLOR_BUFFER_BIT);
+       SDL_GL_SwapWindow(window);
+}
+
 int main()
 {
        Uint32 itime;
        Uint32 ctime = 0;
+       SDL_Event e;
 
        if(!init())
                return -1;
 
        itime = SDL_GetTicks();
 
-       glClearColor(0.0, 0.0, 0.0, 1.0);
-       glClear(GL_COLOR_BUFFER_BIT);
-       SDL_GL_SwapWindow(window);
 
-       while(ctime != itime + 2000){
+       while(ctime != itime + 10000){
                ctime = SDL_GetTicks();
+
+               while(SDL_PollEvent(&e) != 0){
+                       if (e.type == SDL_QUIT){
+                               printf("quitting!\n");
+                               ctime = itime + 10000;
+                       }
+               }
+
+               render();
        }
+
        SDL_Quit();
        return 0;
 }