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Fix glfw3 default hints being modified (#20770)
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/* | ||
* Copyright 2023 The Emscripten Authors. All rights reserved. | ||
* Emscripten is available under two separate licenses, the MIT license and the | ||
* University of Illinois/NCSA Open Source License. Both these licenses can be | ||
* found in the LICENSE file. | ||
*/ | ||
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#include <GLFW/glfw3.h> | ||
#include <assert.h> | ||
#include <emscripten/html5.h> | ||
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static void checkDefaultWindowHints() { | ||
int ok = EM_ASM_INT({ | ||
var res = 1; | ||
for (var k in TEST_GLFW3_DEFAULTS_HINTS) { | ||
if (GLFW.defaultHints[k] !== TEST_GLFW3_DEFAULTS_HINTS[k]) | ||
res = 0; | ||
} | ||
return res; | ||
}); | ||
assert(ok == 1); | ||
} | ||
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int main() { | ||
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EM_ASM( | ||
TEST_GLFW3_DEFAULTS_HINTS = {}; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00020001] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00020002] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00020003] = 1; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00020004] = 1; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00020005] = 1; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x0002000A] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x0002200C] = 0; | ||
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TEST_GLFW3_DEFAULTS_HINTS[0x00021001] = 8; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00021002] = 8; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00021003] = 8; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00021004] = 8; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00021005] = 24; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00021006] = 8; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00021007] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00021008] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00021009] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x0002100A] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x0002100B] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x0002100C] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x0002100D] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x0002100E] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x0002100F] = 0; | ||
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TEST_GLFW3_DEFAULTS_HINTS[0x00022001] = 0x00030001; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00022002] = 1; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00022003] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00022004] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00022005] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00022006] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00022007] = 0; | ||
TEST_GLFW3_DEFAULTS_HINTS[0x00022008] = 0; | ||
); | ||
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assert(glfwInit() == GL_TRUE); | ||
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// Use case: after glfwInit, default window hints are correct | ||
{ | ||
checkDefaultWindowHints(); | ||
} | ||
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// Use case: updates a window hint | ||
// Expected results: window hint is properly updated | ||
// default window hints are not affected | ||
{ | ||
// GLFW_DEPTH_BITS | ||
assert(EM_ASM_INT(return GLFW.hints[0x00021005];) == 24); | ||
glfwWindowHint(GLFW_DEPTH_BITS, 16); | ||
assert(EM_ASM_INT(return GLFW.hints[0x00021005];) == 16); | ||
checkDefaultWindowHints(); | ||
} | ||
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// Use case: resets window hints to default | ||
// Expected results: previously changed window hint is back to its default value | ||
// default window hints are not affected | ||
{ | ||
glfwDefaultWindowHints(); | ||
assert(EM_ASM_INT(return GLFW.hints[0x00021005];) == 24); | ||
checkDefaultWindowHints(); | ||
} | ||
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// Use case: change window hint, create window, then change window hint | ||
// Expected results: the window hint set at creation time (which is now a | ||
// window attribute that can be read with glfwGetWindowAttrib) | ||
// does not change | ||
{ | ||
glfwDefaultWindowHints(); | ||
glfwWindowHint(GLFW_DEPTH_BITS, 16); | ||
GLFWwindow* window = glfwCreateWindow(640, 480, "test_glfw3_default_hints.c", NULL, NULL); | ||
assert(glfwGetWindowAttrib(window, GLFW_DEPTH_BITS) == 16); | ||
glfwWindowHint(GLFW_DEPTH_BITS, 24); | ||
assert(glfwGetWindowAttrib(window, GLFW_DEPTH_BITS) == 16); | ||
} | ||
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glfwTerminate(); | ||
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return 0; | ||
} |
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