I have a Mac(m1) which only has OpenGL 4.1 which does not support compute shaders, I want to try out raytracing but compute shaders don't work.
If I were to use a docker container to run my OpenGL program, could I use OpenGL 4.3 in the container or is Docker's OpenGL driver dependent on the host machine?
If I could use OpenGL 4.3, how would I be able to run a GLFW window in the container? Would there be a way to see the GLFW window from my Mac?
Here is my Dockerfile and OpenGL code:
#include <glad/glad.h>
#include <glfw/glfw3.h>
#define STB_IMAGE_IMPLEMENTATION
#include <stb/stb_image.h>
#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
#include <sstream>
#include <filesystem>
#define GL_SHADER_FRAG 1
#define GL_SHADER_VERT 2
const char *LoadShader(std::string vertexPath, std::string fragmentPath, int type)
{
std::string vertexCode;
std::string fragmentCode;
std::ifstream vShaderFile;
std::ifstream fShaderFile;
vShaderFile.exceptions (std::ifstream::failbit | std::ifstream::badbit);
fShaderFile.exceptions (std::ifstream::failbit | std::ifstream::badbit);
try
{
vShaderFile.open(vertexPath);
fShaderFile.open(fragmentPath);
std::stringstream vShaderStream;
std::stringstream fShaderStream;
vShaderStream << vShaderFile.rdbuf();
fShaderStream << fShaderFile.rdbuf();
vShaderFile.close();
fShaderFile.close();
vertexCode = vShaderStream.str();
fragmentCode = fShaderStream.str();
}
catch(std::ifstream::failure e)
{
std::cout << "ERROR::SHADER::FILE_NOT_SUCCESFULLY_READ. FILE: " << vertexPath << " " << fragmentPath << std::endl;
}
const char* vShaderCode = vertexCode.c_str();
const char* fShaderCode = fragmentCode.c_str();
if(type == GL_SHADER_VERT).
return vShaderCode;
else if(type == GL_SHADER_FRAG)
return fShaderCode;
}
int main()
{
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
GLFWwindow* window = glfwCreateWindow(800, 600, "OpenGL Raytracer", nullptr, nullptr);
if (window == NULL)
{
std::cout << "Failed to create GLFW window" << std::endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
{
std::cout << "Failed to initialize GLAD" << std::endl;
return -1;
}
glViewport(0, 0, 800, 600);
std::cout << "OpenGL version: " << glGetString(GL_VERSION) << std::endl;
unsigned int vertexShader = glCreateShader(GL_VERTEX_SHADER);
const char* vertexShaderCode = LoadShader("/Users/nick/Programming/OpenGL-Raytracing/Vertex.glsl", "/Users/nick/Programming/OpenGL-Raytracing/Fragment.glsl", GL_SHADER_VERT);
glShaderSource(vertexShader, 1, &vertexShaderCode, NULL);
glCompileShader(vertexShader);
unsigned int fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
const char* fragmentShaderCode = LoadShader("/Users/nick/Programming/OpenGL-Raytracing/Vertex.glsl", "/Users/nick/Programming/OpenGL-Raytracing/Fragment.glsl", GL_SHADER_FRAG);
glShaderSource(fragmentShader, 1, &fragmentShaderCode, NULL);
glCompileShader(fragmentShader);
unsigned int shaderProgram = glCreateProgram();
glAttachShader(shaderProgram, vertexShader);
glAttachShader(shaderProgram, fragmentShader);
glLinkProgram(shaderProgram);
glDeleteShader(fragmentShader);
glDeleteShader(vertexShader);
float vertices[] =
{
-1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f,
-1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f,
1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f
};
unsigned int indices[] =
{
0, 1, 3,
1, 2, 3
};
float texCoords[] =
{
0.0f, 0.0f,
1.0f, 0.0f,
0.5f, 1.0f
};
unsigned int VBO, VAO, EBO;
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glGenBuffers(1, &EBO);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(3 * sizeof(float)));
glEnableVertexAttribArray(1);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(6 * sizeof(float)));
glEnableVertexAttribArray(2);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
unsigned int texture;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
stbi_set_flip_vertically_on_load(true);
int width, height, nrChannels;
unsigned char *data = stbi_load(std::filesystem::path("/Users/nick/Downloads/rtx1.png").c_str(), &width, &height, &nrChannels, 0);
if (data)
{
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
glGenerateMipmap(GL_TEXTURE_2D);
}
else
{
std::cout << "Failed to load texture" << std::endl;
}
stbi_image_free(data);
while(!glfwWindowShouldClose(window))
{
glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(shaderProgram);
int vertexColorLocation = glGetUniformLocation(shaderProgram, "ourColor");
glUseProgram(shaderProgram);
glUniform4f(vertexColorLocation, 1, 0, 0, 0);
glBindTexture(GL_TEXTURE_2D, texture);
glUseProgram(shaderProgram);
glBindVertexArray(VAO);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
glfwPollEvents();
glfwSwapBuffers(window);
}
glfwTerminate();
FROM ubuntu:20.04
COPY ./ /usr/Nick/Maple
RUN apt-get update
RUN apt-get install -y libglfw3-dev
RUN apt-get install -y cmake
RUN apt-get install -y make
RUN apt-get install -y clang
RUN apt-get install -y gobjc++
RUN apt-get install -y build-essential
RUN apt-get install -y mesa-common-dev
RUN apt-get -y install xauth
RUN cd /usr/Nick/Maple && cmake .
RUN cd /usr/Nick/Maple && make
EXPOSE 8887
#RUN cd /usr/Nick/Maple/build/debug && ./OpenGL-Raytracing
