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add OpenGL bootstrapping code

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Quinn
2025-04-14 18:48:27 +02:00
committed by Quinn
parent 9120e37c26
commit f0ab423e36
1 changed files with 14 additions and 4 deletions
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18
src/io/window.c
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@@ -2,9 +2,15 @@
// Licensed under the MIT Licence. See LICENSE for details // Licensed under the MIT Licence. See LICENSE for details
#include "window.h" #include "window.h"
// include before GLFW
#define GLAD_GL_IMPLEMENTATION
#include <glad/gl.h>
// include system libraries
#include <GLFW/glfw3.h> #include <GLFW/glfw3.h>
#include <assert.h> #include <assert.h>
#include <stdlib.h> #include <stdlib.h>
#include "input.h" #include "input.h"
// macros for ease of access // macros for ease of access
@@ -19,18 +25,19 @@ int window_init(void) {
glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE); glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); // TODO: read about opengl profiles glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE); glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE);
win = glfwCreateWindow(WIN_DEFAULT_WIDTH, WIN_DEFAULT_HEIGHT, WIN_NAME, NULL, NULL); win = glfwCreateWindow(WIN_DEFAULT_WIDTH, WIN_DEFAULT_HEIGHT, WIN_NAME, NULL, NULL);
if (!win) return 1; if (!win) return 1;
// make the current window the current context
glfwMakeContextCurrent(win);
// configure callbacks // configure callbacks
glfwSetKeyCallback(win, key_callback); glfwSetKeyCallback(win, key_callback);
glfwSwapInterval(1); // wait 1 screen update for a redraw a.k.a. "vsync". (not really applicable in this case but eh) glfwSwapInterval(1); // wait 1 screen update for a redraw a.k.a. "vsync". (not really applicable in this case but eh)
// setup OpenGL
glfwMakeContextCurrent(win);
if (!gladLoadGL(glfwGetProcAddress)) return 1;
return 0; return 0;
} }
@@ -39,6 +46,9 @@ void window_loop(void) {
while (!glfwWindowShouldClose(win)) { while (!glfwWindowShouldClose(win)) {
glfwWaitEvents(); // wait till an update has been given glfwWaitEvents(); // wait till an update has been given
glClearColor(0.1F, 0.1F, 0.1F, 1.0F);
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(win);
} }
glfwDestroyWindow(win); glfwDestroyWindow(win);