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emscripten-core
GitHub Repository: emscripten-core/emscripten
 Path: blob/main/test/browser/test_glfw3_default_hints.c
4150 views
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/*

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 * Copyright 2023 The Emscripten Authors.  All rights reserved.

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 * Emscripten is available under two separate licenses, the MIT license and the

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 * University of Illinois/NCSA Open Source License.  Both these licenses can be

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 * found in the LICENSE file.

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 */

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#include <GLFW/glfw3.h>

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#include <assert.h>

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#include <emscripten/html5.h>

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static void checkDefaultWindowHints() {

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  int ok = EM_ASM_INT({

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    var res = 1;

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    for (var k in TEST_GLFW3_DEFAULTS_HINTS) {

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      if (GLFW.defaultHints[k] !== TEST_GLFW3_DEFAULTS_HINTS[k])

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        res = 0;

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    }

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    return res;

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  });

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  assert(ok == 1);

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}

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int main() {

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  EM_ASM(

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    TEST_GLFW3_DEFAULTS_HINTS = {};

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    TEST_GLFW3_DEFAULTS_HINTS[0x00020001] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00020002] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00020003] = 1;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00020004] = 1;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00020005] = 1;

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    TEST_GLFW3_DEFAULTS_HINTS[0x0002000A] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x0002200C] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00021001] = 8;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00021002] = 8;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00021003] = 8;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00021004] = 8;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00021005] = 24;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00021006] = 8;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00021007] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00021008] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00021009] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x0002100A] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x0002100B] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x0002100C] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x0002100D] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x0002100E] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x0002100F] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00022001] = 0x00030001;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00022002] = 1;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00022003] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00022004] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00022005] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00022006] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00022007] = 0;

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    TEST_GLFW3_DEFAULTS_HINTS[0x00022008] = 0;

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  );

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  assert(glfwInit() == GLFW_TRUE);

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  // Use case: after glfwInit, default window hints are correct

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  {

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    checkDefaultWindowHints();

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  }

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  // Use case: updates a window hint

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  // Expected results: window hint is properly updated

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  //                   default window hints are not affected

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  {

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    // GLFW_DEPTH_BITS

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    assert(EM_ASM_INT(return GLFW.hints[0x00021005];) == 24);

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    glfwWindowHint(GLFW_DEPTH_BITS, 16);

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    assert(EM_ASM_INT(return GLFW.hints[0x00021005];) == 16);

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    checkDefaultWindowHints();

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  }

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  // Use case: resets window hints to default

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  // Expected results: previously changed window hint is back to its default value

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  //                   default window hints are not affected

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  {

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    glfwDefaultWindowHints();

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    assert(EM_ASM_INT(return GLFW.hints[0x00021005];) == 24);

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    checkDefaultWindowHints();

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  }

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  // Use case: change window hint, create window, then change window hint

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  // Expected results: the window hint set at creation time (which is now a

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  //                   window attribute that can be read with glfwGetWindowAttrib)

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  //                   does not change

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  {

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    glfwDefaultWindowHints();

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    glfwWindowHint(GLFW_DEPTH_BITS, 16);

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    GLFWwindow* window = glfwCreateWindow(640, 480, "test_glfw3_default_hints.c", NULL, NULL);

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    assert(glfwGetWindowAttrib(window, GLFW_DEPTH_BITS) == 16);

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    glfwWindowHint(GLFW_DEPTH_BITS, 24);

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    assert(glfwGetWindowAttrib(window, GLFW_DEPTH_BITS) == 16);

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  }

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  glfwTerminate();

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  return 0;

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}

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