95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
#include <GLFW/glfw3.h>
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#include <linmath.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "config.h"
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#include "types.h"
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#define GLAD_GL_IMPLEMENTATION
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#include <glad/gl.h>
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void init_glfw(void (*error_callback)(int, const char *)) {
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// set errors handler
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glfwSetErrorCallback(error_callback);
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// print current GLFW version
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fprintf(stdout, "[GLFW] %s\n", glfwGetVersionString());
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// init GLFW
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if (!glfwInit()) {
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fprintf(stderr, "[GLFW] Initialization failed\n");
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exit(EXIT_FAILURE);
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}
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// Context related hints
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 6);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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}
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GLFWmonitor *get_monitor(unsigned char screen_index) {
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// detect monitors
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int count;
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GLFWmonitor **monitors = glfwGetMonitors(&count);
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// check selected monitor availability
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if (screen_index >= count) {
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fprintf(stderr, "Screen %d is out of range [0-%d]\n", screen_index,
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count - 1);
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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return monitors[screen_index];
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}
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GLFWwindow *create_window(GLFWmonitor *monitor,
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void (*key_callback)(Window *, int, int, int, int)) {
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// Window related hints
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glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);
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// create fullscreen window in selected monitor
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GLFWwindow *window =
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glfwCreateWindow(1, 1, PACKAGE " " VERSION, monitor, NULL);
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// handle window creation fail
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if (!window) {
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fprintf(stderr, "[GLFW] Window or context creation failed\n");
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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// set keyboard handler
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glfwSetKeyCallback(window, key_callback);
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// hide cursor
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glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
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return window;
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}
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void use_window(GLFWwindow *window) {
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// use current window
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glfwMakeContextCurrent(window);
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// link GLAD and GLFW window
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gladLoadGL(glfwGetProcAddress);
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// vsync
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glfwSwapInterval(1);
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}
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Window *init_window(Parameters params,
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void (*error_callback)(int, const char *),
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void (*key_callback)(Window *, int, int, int, int)) {
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GLFWwindow *window;
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GLFWmonitor *monitor;
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init_glfw(error_callback);
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monitor = get_monitor(params.screen);
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window = create_window(monitor, key_callback);
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use_window(window);
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return window;
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} |