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Simple SDL2/OpenGL example
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// 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; | |
} |
Author
rjungemann
commented
Nov 18, 2018
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