tests/test_webgl_context_attributes_sdl2.c

/*
 * Copyright 2013 The Emscripten Authors.  All rights reserved.
 * Emscripten is available under two separate licenses, the MIT license and the
 * University of Illinois/NCSA Open Source License.  Both these licenses can be
 * found in the LICENSE file.
 */

#include <GL/glew.h>
#define NO_SDL_GLEXT
#include <SDL/SDL.h>
#include <SDL/SDL_opengl.h>
#include <emscripten.h>

#include "test_webgl_context_attributes_common.c"

int main(int argc, char *argv[]) {
    
    checkContextAttributesSupport(); 
    
    SDL_Init(SDL_INIT_VIDEO);

    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);

#ifdef AA_ACTIVATED
    antiAliasingActivated = true;
    SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
    SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
#else
    SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 0);
    SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 0);
#endif
    
#ifdef DEPTH_ACTIVATED
    depthActivated = true;
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
#else
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 0);
#endif
    
#ifdef STENCIL_ACTIVATED
    stencilActivated = true;
    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
#else
    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 0);
#endif

#ifdef ALPHA_ACTIVATED
    alphaActivated = true;
    SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
#else
    SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 0);
#endif
    
    SDL_Window *sdlWindow = SDL_CreateWindow("test",
					   SDL_WINDOWPOS_UNDEFINED,
					   SDL_WINDOWPOS_UNDEFINED,
					   WINDOWS_SIZE, WINDOWS_SIZE,
					   SDL_WINDOW_OPENGL);
    SDL_Renderer *sdlRenderer = SDL_CreateRenderer(sdlWindow, -1, 0);
    SDL_GLContext context = SDL_GL_CreateContext(sdlWindow);

    glewInit();
    initGlObjects();
    
    draw();
    
    return 0;
}