From 0bf4ad9e4a9e1c97e92aa23a365405dfef89bd7c Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 17 Jan 2021 19:36:30 +0000
Subject: Big reshuffle

Fixes code quality warnings now picked up.
---
 application/display.cpp | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 application/display.cpp

(limited to 'application/display.cpp')

diff --git a/application/display.cpp b/application/display.cpp
new file mode 100644
index 0000000..b4a42d7
--- /dev/null
+++ b/application/display.cpp
@@ -0,0 +1,47 @@
+#include "display.h"
+#include <GL/glew.h>
+#include <stdexcept>
+
+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 = m_window.create(SDL_CreateWindow, SDL_DestroyWindow, title.c_str(), SDL_WINDOWPOS_CENTERED,
+			SDL_WINDOWPOS_CENTERED, width, height, SDL_WINDOW_OPENGL);
+	m_glContext = m_glContext.create(SDL_GL_CreateContext, SDL_GL_DeleteContext, m_window);
+
+	if (glewInit() != GLEW_OK) {
+		throw std::runtime_error {"Glew failed to initialize!"};
+	}
+
+	glEnable(GL_DEPTH_TEST);
+
+	glEnable(GL_CULL_FACE);
+	glCullFace(GL_BACK);
+}
+
+Display::~Display()
+{
+	SDL_Quit();
+}
+
+void
+Display::Clear(float r, float g, float b, float a) const
+{
+	glClearColor(r, g, b, a);
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+void
+Display::SwapBuffers() const
+{
+	SDL_GL_SwapWindow(m_window);
+}
-- 
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