add glfw library

1 files changed, 174 insertions, 0 deletions

diff --git a/libs/glfw-3.3.8/tests/windows.c b/libs/glfw-3.3.8/tests/windows.c
new file mode 100644
index 0000000..6669856
--- /dev/null
+++ b/libs/glfw-3.3.8/tests/windows.c
@@ -0,0 +1,174 @@
+//========================================================================
+// Simple multi-window test
+// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would
+//    be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+//    be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+//    distribution.
+//
+//========================================================================
+//
+// This test creates four windows and clears each in a different color
+//
+//========================================================================
+
+#include <glad/gl.h>
+#define GLFW_INCLUDE_NONE
+#include <GLFW/glfw3.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "getopt.h"
+
+static const char* titles[] =
+{
+    "Red",
+    "Green",
+    "Blue",
+    "Yellow"
+};
+
+static const struct
+{
+    float r, g, b;
+} colors[] =
+{
+    { 0.95f, 0.32f, 0.11f },
+    { 0.50f, 0.80f, 0.16f },
+    {   0.f, 0.68f, 0.94f },
+    { 0.98f, 0.74f, 0.04f }
+};
+
+static void usage(void)
+{
+    printf("Usage: windows [-h] [-b] [-f] \n");
+    printf("Options:\n");
+    printf("  -b create decorated windows\n");
+    printf("  -f set focus on show off for all but first window\n");
+    printf("  -h show this help\n");
+}
+
+static void error_callback(int error, const char* description)
+{
+    fprintf(stderr, "Error: %s\n", description);
+}
+
+static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
+{
+    if (action != GLFW_PRESS)
+        return;
+
+    switch (key)
+    {
+        case GLFW_KEY_SPACE:
+        {
+            int xpos, ypos;
+            glfwGetWindowPos(window, &xpos, &ypos);
+            glfwSetWindowPos(window, xpos, ypos);
+            break;
+        }
+
+        case GLFW_KEY_ESCAPE:
+            glfwSetWindowShouldClose(window, GLFW_TRUE);
+            break;
+    }
+}
+
+int main(int argc, char** argv)
+{
+    int i, ch;
+    int decorated = GLFW_FALSE;
+    int focusOnShow = GLFW_TRUE;
+    int running = GLFW_TRUE;
+    GLFWwindow* windows[4];
+
+    while ((ch = getopt(argc, argv, "bfh")) != -1)
+    {
+        switch (ch)
+        {
+            case 'b':
+                decorated = GLFW_TRUE;
+                break;
+            case 'f':
+                focusOnShow = GLFW_FALSE;
+                break;
+            case 'h':
+                usage();
+                exit(EXIT_SUCCESS);
+            default:
+                usage();
+                exit(EXIT_FAILURE);
+        }
+    }
+
+    glfwSetErrorCallback(error_callback);
+
+    if (!glfwInit())
+        exit(EXIT_FAILURE);
+
+    glfwWindowHint(GLFW_DECORATED, decorated);
+    glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
+
+    for (i = 0;  i < 4;  i++)
+    {
+        int left, top, right, bottom;
+        if (i)
+            glfwWindowHint(GLFW_FOCUS_ON_SHOW, focusOnShow);
+
+        windows[i] = glfwCreateWindow(200, 200, titles[i], NULL, NULL);
+        if (!windows[i])
+        {
+            glfwTerminate();
+            exit(EXIT_FAILURE);
+        }
+
+        glfwSetKeyCallback(windows[i], key_callback);
+
+        glfwMakeContextCurrent(windows[i]);
+        gladLoadGL(glfwGetProcAddress);
+        glClearColor(colors[i].r, colors[i].g, colors[i].b, 1.f);
+
+        glfwGetWindowFrameSize(windows[i], &left, &top, &right, &bottom);
+        glfwSetWindowPos(windows[i],
+                         100 + (i & 1) * (200 + left + right),
+                         100 + (i >> 1) * (200 + top + bottom));
+    }
+
+    for (i = 0;  i < 4;  i++)
+        glfwShowWindow(windows[i]);
+
+    while (running)
+    {
+        for (i = 0;  i < 4;  i++)
+        {
+            glfwMakeContextCurrent(windows[i]);
+            glClear(GL_COLOR_BUFFER_BIT);
+            glfwSwapBuffers(windows[i]);
+
+            if (glfwWindowShouldClose(windows[i]))
+                running = GLFW_FALSE;
+        }
+
+        glfwWaitEvents();
+    }
+
+    glfwTerminate();
+    exit(EXIT_SUCCESS);
+}
+