examples

Toy examples in single C files.
git clone git://henryandlizzy.uk/examples
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gl.c (753B)

      1 #include <GLFW/glfw3.h>
      2 #include <assert.h>
      3 #include <math.h>
      4 
      5 char const* __asan_default_options() { return "detect_leaks=0"; }
      6 
      7 static void fb_resize_cb(GLFWwindow*, int w, int h)
      8 {
      9 	glViewport(0, 0, w, h);
     10 }
     11 
     12 int main(int, char* argv[])
     13 {
     14 	assert(glfwInit());
     15 	GLFWwindow* window = glfwCreateWindow(640, 480, argv[0], NULL, NULL);
     16 	assert(window);
     17 	glfwSetFramebufferSizeCallback(window, fb_resize_cb);
     18 	glfwMakeContextCurrent(window);
     19 	glfwSwapInterval(1);
     20 	glClearColor(0, 0, 0, 1);
     21 
     22 	while (!glfwWindowShouldClose(window))
     23 	{
     24 		glfwPollEvents();
     25 		double t = glfwGetTime() / 2;
     26 		t = t - floor(t);
     27 		t *= 3;
     28 		glClear(GL_COLOR_BUFFER_BIT);
     29 		glRectd(t-2,-1, t-1, 1);
     30 		glfwSwapBuffers(window);
     31 	}
     32 	glfwTerminate(); /* Implicit window destroy */
     33 }