Hello Window

3 files changed, 27 insertions, 4 deletions

diff --git a/Tupfile b/Tupfile
index d2dee1c..1fa5aa1 100644
--- a/Tupfile
+++ b/Tupfile
@@ -1,8 +1,8 @@
 CC      = gcc
 LD      = $(CC) -fuse-ld=mold
-CFLAGS  = -std=c2x -Wall -Wextra -Iglad
-LDFLAGS = -lGL
+CFLAGS  = -std=c99 -Wall -Wextra -Iglad
+LDFLAGS = -lGL -lglfw
 
 .gitignore
 : foreach src/*.c glad/*.c |> $(CC) $(CFLAGS) -c -o %o %f |> build/%B.o
-: build/*.o |> $(LD) -o %o %f $(LDFLAGS) |> gl
+: build/*.o |> $(LD) -o %o %f $(LDFLAGS) |> build/gl
diff --git a/run.sh b/run.sh
new file mode 100755
index 0000000..5152e96
--- /dev/null
+++ b/run.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+tup && build/gl
diff --git a/src/main.c b/src/main.c
index 93bdecf..bdb349c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,9 @@
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 #include <stdio.h>
+#include <stdlib.h>
+
+static void framebuffer_size_callback(GLFWwindow *window, int w, int h);
 
 int
 main([[maybe_unused]] int argc, [[maybe_unused]] char **argv)
@@ -9,6 +12,11 @@ main([[maybe_unused]] int argc, [[maybe_unused]] char **argv)
 		fprintf(stderr, "glfwInit failed\n");
 		return 1;
 	}
+	if (atexit(glfwTerminate)) {
+		perror("main:atexit");
+		glfwTerminate();
+		return 1;
+	}
 	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
 	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
 	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
@@ -20,11 +28,24 @@ main([[maybe_unused]] int argc, [[maybe_unused]] char **argv)
 	}
 	glfwMakeContextCurrent(window);
 
-	if (gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
+	if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
 		fprintf(stderr, "gladLoadGLLoader failed\n");
 		return 1;
 	}
 
 	glViewport(0, 0, 800, 600);
+	glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
+
+	while (!glfwWindowShouldClose(window)) {
+		glfwSwapBuffers(window);
+		glfwPollEvents();
+	}
+
 	return 0;
 }
+
+static void
+framebuffer_size_callback([[maybe_unused]] GLFWwindow *window, int w, int h)
+{
+	glViewport(0, 0, w, h);
+}