fast-nuclear-sim/src/graphics/window.cpp

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#include <GL/glew.h>
#include <GLFW/glfw3.h>
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#include <glm/matrix.hpp>
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#include <iostream>
#include "arrays.hpp"
#include "keyboard.hpp"
#include "resize.hpp"
#include "window.hpp"
#include "shader.hpp"
#include "font.hpp"
using namespace sim::graphics;
static GLFWwindow* win;
static bool win_should_close = false;
void GLAPIENTRY cb_debug_message(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void* userParam)
{
std::cout << "GL CALLBACK: " << message << "\n";
}
void window::create()
{
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 6);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, true);
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glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, true);
win = glfwCreateWindow(800, 600, "FastNuclearSim", nullptr, nullptr);
glfwMakeContextCurrent(win);
GLenum err = glewInit();
if(err != GLEW_OK)
{
std::cout << "GLEW Init Failed: " << glewGetErrorString(err) << "\n";
close();
return;
}
glEnable(GL_DEBUG_OUTPUT);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
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glEnable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glDebugMessageCallback(cb_debug_message, nullptr);
keyboard::init();
resize::init();
font::init();
shader::init_program();
arrays::init();
glViewport(0, 0, 800, 600);
}
void window::loop()
{
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glClearColor(0.2f, 0.3f, 0.5f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glm::mat4 m = {
1, 1, 1, 1,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0
};
glUniformMatrix4fv(shader::gl_tex_mat, 1, false, &m[0][0]);
glUniform1i(shader::gl_do_tex, 1);
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glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
glfwSwapBuffers(win);
glfwPollEvents();
}
bool window::should_close()
{
return win_should_close || glfwWindowShouldClose(win);
}
void window::close()
{
win_should_close = true;
}
void window::destroy()
{
glfwTerminate();
}
GLFWwindow* window::get_window()
{
return win;
}