From 400410fcd436d5e4310bfa779f0309c5fae5b2c2 Mon Sep 17 00:00:00 2001 From: Dan Goodliffe Date: Sat, 16 Jan 2021 18:09:15 +0000 Subject: Initial commit Stripped back and formatted from https://github.com/BennyQBD/ModernOpenGLTutorial/ --- display.cpp | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 display.cpp (limited to 'display.cpp') diff --git a/display.cpp b/display.cpp new file mode 100644 index 0000000..4317933 --- /dev/null +++ b/display.cpp @@ -0,0 +1,50 @@ +#include "display.h" +#include +#include + +Display::Display(int width, int height, const std::string & title) +{ + 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_DEPTH_SIZE, 16); + SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); + + m_window = SDL_CreateWindow( + title.c_str(), SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, SDL_WINDOW_OPENGL); + m_glContext = SDL_GL_CreateContext(m_window); + + GLenum res = glewInit(); + if (res != GLEW_OK) { + std::cerr << "Glew failed to initialize!" << std::endl; + } + + glEnable(GL_DEPTH_TEST); + + glEnable(GL_CULL_FACE); + glCullFace(GL_BACK); +} + +Display::~Display() +{ + SDL_GL_DeleteContext(m_glContext); + SDL_DestroyWindow(m_window); + SDL_Quit(); +} + +void +Display::Clear(float r, float g, float b, float a) +{ + glClearColor(r, g, b, a); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); +} + +void +Display::SwapBuffers() +{ + SDL_GL_SwapWindow(m_window); +} -- cgit v1.2.3