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Copy pathDisplay.cpp
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74 lines (62 loc) · 1.47 KB
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#include "Display.h"
#include "GL/glew.h"
#include <iostream>
Display::Display(int width, int height, const std::string& title)
{
// SDL初始化
SDL_Init(SDL_INIT_EVERYTHING);
SDL_GL_SetAttribute(SDL_GL_RED_SIZE,8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BUFFER_SIZE, 32);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
// 创建一个窗口
m_window = SDL_CreateWindow(title.c_str(),SDL_WINDOWPOS_CENTERED,SDL_WINDOWPOS_CENTERED,width,height, SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL);
if (!m_window)
{
fprintf(stderr, "Couldn't create window: %s\n", SDL_GetError());
return;
}
m_glContext=SDL_GL_CreateContext(m_window);
if (!m_glContext)
{
fprintf(stderr, "Couldn't create context: %s\n", SDL_GetError());
return;
}
GLenum status = glewInit();
if (status != GLEW_OK)
{
std::cerr << "Glew Init failure" << std::endl;
}
m_isClosed = false;
}
Display::~Display()
{
SDL_GL_DeleteContext(m_glContext);
//关闭窗口，释放相关内存
SDL_DestroyWindow(m_window);
//关闭SDL
SDL_Quit();
}
void Display::Update()
{
SDL_GL_SwapWindow(m_window);
SDL_Event event;
while (SDL_PollEvent(&event))
{
if (event.type == SDL_QUIT)
{
m_isClosed = true;
}
}
}
bool Display::IsClosed()
{
return m_isClosed;
}
void Display::Clear(float red, float green, float blue, float alpha)
{
glClearColor(red, green, blue, alpha);
glClear(GL_COLOR_BUFFER_BIT);
}