init 2

1 files changed, 88 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..32aff4e
--- /dev/null
+++ b/main.c
@@ -0,0 +1,88 @@
+#include <KHR/khrplatform.h>
+#define GLFW_INCLUDE_NONE
+#include <glad/glad.h>
+#include <GLFW/glfw3.h>
+#include <GL/gl.h>
+#include <stdio.h>
+
+// struct and function declaration
+// ----------------------------------------------------------------------------
+void framebuffer_size_callback(GLFWwindow* window, int width, int height);
+void processInput(GLFWwindow* window);
+// ----------------------------------------------------------------------------
+// END
+
+int main(void) {
+
+    // GLFW settings init and which version of opengl we should use
+    // and which subset of opengl profiles
+    glfwInit();
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 4);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+    
+    
+
+    // Window settings
+    // create window
+    int w_height = 1280;
+    int w_width = 820;
+    GLFWwindow* window = glfwCreateWindow(w_height, w_width, "Test", NULL, NULL);
+    if (window == NULL) {
+	printf("Failed to create GLFW window\n");
+	glfwTerminate();
+	glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
+	return -1;
+    }
+    // init window
+    glfwMakeContextCurrent(window);
+
+    // init GLAD
+    if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
+	printf("Failed to initialize GLAD\n");
+	return -1;
+    }
+
+    // opengl viewport
+    framebuffer_size_callback(window, w_width, w_height);
+
+    // -------------------------------------------------------------------------
+    // render loop
+    // -------------------------------------------------------------------------
+    while (!glfwWindowShouldClose(window)) {
+	// input
+	processInput(window);
+
+	// rendering commands here
+	// -----------------------
+	glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
+	glClear(GL_COLOR_BUFFER_BIT);
+	
+	// check and call events and swap the buffers
+	glfwSwapBuffers(window);
+	glfwPollEvents();
+    }
+
+    glfwTerminate();
+    return 0;
+}
+
+// END render loop
+// -----------------------------------------------------------------------------
+
+// Functions
+// -----------------------------------------------------------------------------
+// glfw: whenever the window size changed (by OS or user resize) this callback function executes
+// ---------------------------------------------------------------------------------------------
+void framebuffer_size_callback(GLFWwindow* window, int width, int height) {
+    glViewport(0, 0, width, height);
+}
+
+// process all input: query GLFW whether relevant keys are pressed/released this frame and react accordingly
+// ---------------------------------------------------------------------------------------------------------
+void processInput(GLFWwindow* window) {
+    if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) glfwSetWindowShouldClose(window, 1);
+    if (glfwGetKey(window, GLFW_KEY_Q) == GLFW_PRESS) glfwSetWindowShouldClose(window, 1);
+}
+
+