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100 lines
3.0 KiB
100 lines
3.0 KiB
14 years ago
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/*
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>
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This file is part of Magnum.
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Magnum is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 3
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only, as published by the Free Software Foundation.
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Magnum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License version 3 for more details.
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*/
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#include "Sdl2Context.h"
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namespace Magnum { namespace Contexts {
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Sdl2Context::Sdl2Context(int argc, char** argv, const std::string& name, const Math::Vector2<GLsizei>& size): _redraw(true) {
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if(SDL_Init(SDL_INIT_VIDEO) < 0) {
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Error() << "Cannot initialize SDL.";
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exit(1);
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}
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/* Request OpenGL 3.3 */
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
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/* Enable double buffering and 24bt depth buffer */
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
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window = SDL_CreateWindow(name.c_str(), SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
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size.x(), size.y(), SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN);
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if(!window) {
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Error() << "Cannot create window.";
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exit(2);
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}
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context = SDL_GL_CreateContext(window);
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/* This must be enabled, otherwise (on my NVidia) it crashes when creating
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VAO. WTF. */
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glewExperimental = true;
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/* Init GLEW */
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GLenum err = glewInit();
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if(err != GLEW_OK) {
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Error() << "Sdl2Context: cannot initialize GLEW:" << glewGetErrorString(err);
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exit(1);
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}
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/* Push resize event, so viewportEvent() is called at startup */
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SDL_Event* sizeEvent = new SDL_Event;
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sizeEvent->type = SDL_WINDOWEVENT;
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sizeEvent->window.event = SDL_WINDOWEVENT_RESIZED;
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sizeEvent->window.data1 = size.x();
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sizeEvent->window.data2 = size.y();
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SDL_PushEvent(sizeEvent);
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}
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Sdl2Context::~Sdl2Context() {
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SDL_GL_DeleteContext(context);
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SDL_DestroyWindow(window);
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SDL_Quit();
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}
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int Sdl2Context::exec() {
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for(;;) {
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SDL_Event event;
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while(SDL_PollEvent(&event)) {
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switch(event.type) {
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case SDL_WINDOWEVENT:
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switch(event.window.event) {
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case SDL_WINDOWEVENT_RESIZED:
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viewportEvent({event.window.data1, event.window.data2});
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_redraw = true;
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break;
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case SDL_WINDOWEVENT_EXPOSED:
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_redraw = true;
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break;
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} break;
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case SDL_QUIT:
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return 0;
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}
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}
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if(_redraw) {
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drawEvent();
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_redraw = false;
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} else Corrade::Utility::sleep(5);
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}
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return 0;
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}
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}}
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