main.c

#include <GLFW/glfw3.h>
#include <physfs.h>
#include "common/util.h"
#include "render/render.h"
#include "globals.h"
#include "window.h"

static void error_callback(int code, const char *message)
{
    lprintf("glfw error %d: %s", code, message);
}

int main(int argc, char **argv)
{
    if(!PHYSFS_init(argv[0]))
        die("physfs: %s", PHYSFS_getErrorByCode(PHYSFS_getLastErrorCode()));
    
    PHYSFS_setWriteDir(".");
    PHYSFS_mount(".", "/", false);
    PHYSFS_mkdir("/assets");

    glfwSetErrorCallback(error_callback);
    if(!glfwInit())
        die("glfw: init failed");

    init_globals();
    init_window();
    init_render();

    const vector2D vertices[3] = {
        { 000.0f, 600.0f },
        { 400.0f, 000.0f },
        { 800.0f, 600.0f }
    };

    GLuint ubo;
    glCreateBuffers(1, &ubo);
    glNamedBufferData(ubo, (GLsizeiptr)sizeof(matrix4x4), NULL, GL_DYNAMIC_DRAW);

    GLuint vbo;
    glCreateBuffers(1, &vbo);
    glNamedBufferData(vbo, (GLsizeiptr)sizeof(vertices), vertices, GL_STATIC_DRAW);

    GLuint vao;
    glCreateVertexArrays(1, &vao);
    glVertexArrayVertexBuffer(vao, 0, vbo, 0, sizeof(vector2D));
    glEnableVertexArrayAttrib(vao, 0);
    glVertexArrayAttribFormat(vao, 0, 2, GL_FLOAT, GL_FALSE, 0);
    glVertexArrayAttribBinding(vao, 0, 0);

    struct shader_s shaders[2];
    load_vertex_shader_file(shaders + 0, "/assets/shaders/init.vert.spv");
    load_fragment_shader_file(shaders + 1, "/assets/shaders/init.frag.spv");

    struct pipeline_s pipeline = { 0 };
    create_pipeline(&pipeline, shaders, 2);

    while(!glfwWindowShouldClose(g_window)) {
        globals_frame();
        glNamedBufferSubData(ubo, 0, (GLsizeiptr)sizeof(matrix4x4), g_globals.view.matrix);

        glClear(GL_COLOR_BUFFER_BIT);
        bind_pipeline(&pipeline);
        glBindVertexArray(vao);
        glBindBufferBase(GL_UNIFORM_BUFFER, 0, ubo);
        glDrawArrays(GL_TRIANGLES, 0, 3);

        glfwSwapBuffers(g_window);
        glfwPollEvents();
    }

    shutdown_window();
    shutdown_render();

    glfwTerminate();
    
    return 0;
}