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Merge commit 'a120e3f70101ebe90f92fe59436a37e6caf42adf' as 'deps/glfw'

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This commit is contained in:
Gary Talent
2022-03-11 22:04:50 -06:00
parent 6885aca0e8 a120e3f701
commit 3e080b95d5
160 changed files with 102582 additions and 0 deletions
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99
deps/glfw/tests/CMakeLists.txt vendored Normal file
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link_libraries(glfw)
include_directories("${GLFW_SOURCE_DIR}/deps")
if (MATH_LIBRARY)
link_libraries("${MATH_LIBRARY}")
endif()
# Workaround for the MS CRT deprecating parts of the standard library
if (MSVC OR CMAKE_C_SIMULATE_ID STREQUAL "MSVC")
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
endif()
set(GLAD_GL "${GLFW_SOURCE_DIR}/deps/glad/gl.h"
"${GLFW_SOURCE_DIR}/deps/glad_gl.c")
set(GLAD_VULKAN "${GLFW_SOURCE_DIR}/deps/glad/vulkan.h"
"${GLFW_SOURCE_DIR}/deps/glad_vulkan.c")
set(GETOPT "${GLFW_SOURCE_DIR}/deps/getopt.h"
"${GLFW_SOURCE_DIR}/deps/getopt.c")
set(TINYCTHREAD "${GLFW_SOURCE_DIR}/deps/tinycthread.h"
"${GLFW_SOURCE_DIR}/deps/tinycthread.c")
if (${CMAKE_VERSION} VERSION_EQUAL "3.1.0" OR
${CMAKE_VERSION} VERSION_GREATER "3.1.0")
set(CMAKE_C_STANDARD 99)
else()
# Remove this fallback when removing support for CMake version less than 3.1
add_compile_options("$<$<C_COMPILER_ID:AppleClang>:-std=c99>"
"$<$<C_COMPILER_ID:Clang>:-std=c99>"
"$<$<C_COMPILER_ID:GNU>:-std=c99>")
endif()
add_executable(clipboard clipboard.c ${GETOPT} ${GLAD_GL})
add_executable(events events.c ${GETOPT} ${GLAD_GL})
add_executable(msaa msaa.c ${GETOPT} ${GLAD_GL})
add_executable(glfwinfo glfwinfo.c ${GETOPT} ${GLAD_GL} ${GLAD_VULKAN})
add_executable(iconify iconify.c ${GETOPT} ${GLAD_GL})
add_executable(monitors monitors.c ${GETOPT} ${GLAD_GL})
add_executable(reopen reopen.c ${GLAD_GL})
add_executable(cursor cursor.c ${GLAD_GL})
add_executable(empty WIN32 MACOSX_BUNDLE empty.c ${TINYCTHREAD} ${GLAD_GL})
add_executable(gamma WIN32 MACOSX_BUNDLE gamma.c ${GLAD_GL})
add_executable(icon WIN32 MACOSX_BUNDLE icon.c ${GLAD_GL})
add_executable(inputlag WIN32 MACOSX_BUNDLE inputlag.c ${GETOPT} ${GLAD_GL})
add_executable(joysticks WIN32 MACOSX_BUNDLE joysticks.c ${GLAD_GL})
add_executable(opacity WIN32 MACOSX_BUNDLE opacity.c ${GLAD_GL})
add_executable(tearing WIN32 MACOSX_BUNDLE tearing.c ${GLAD_GL})
add_executable(threads WIN32 MACOSX_BUNDLE threads.c ${TINYCTHREAD} ${GLAD_GL})
add_executable(timeout WIN32 MACOSX_BUNDLE timeout.c ${GLAD_GL})
add_executable(title WIN32 MACOSX_BUNDLE title.c ${GLAD_GL})
add_executable(triangle-vulkan WIN32 triangle-vulkan.c ${GLAD_VULKAN})
add_executable(windows WIN32 MACOSX_BUNDLE windows.c ${GETOPT} ${GLAD_GL})
target_link_libraries(empty "${CMAKE_THREAD_LIBS_INIT}")
target_link_libraries(threads "${CMAKE_THREAD_LIBS_INIT}")
if (RT_LIBRARY)
target_link_libraries(empty "${RT_LIBRARY}")
target_link_libraries(threads "${RT_LIBRARY}")
endif()
set(GUI_ONLY_BINARIES empty gamma icon inputlag joysticks opacity tearing
threads timeout title triangle-vulkan windows)
set(CONSOLE_BINARIES clipboard events msaa glfwinfo iconify monitors reopen
cursor)
set_target_properties(${GUI_ONLY_BINARIES} ${CONSOLE_BINARIES} PROPERTIES
FOLDER "GLFW3/Tests")
if (MSVC)
# Tell MSVC to use main instead of WinMain
set_target_properties(${GUI_ONLY_BINARIES} PROPERTIES
LINK_FLAGS "/ENTRY:mainCRTStartup")
elseif (CMAKE_C_SIMULATE_ID STREQUAL "MSVC")
# Tell Clang using MS CRT to use main instead of WinMain
set_target_properties(${GUI_ONLY_BINARIES} PROPERTIES
LINK_FLAGS "-Wl,/entry:mainCRTStartup")
endif()
if (APPLE)
set_target_properties(empty PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Empty Event")
set_target_properties(gamma PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Gamma")
set_target_properties(inputlag PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Input Lag")
set_target_properties(joysticks PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Joysticks")
set_target_properties(opacity PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Opacity")
set_target_properties(tearing PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Tearing")
set_target_properties(threads PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Threads")
set_target_properties(timeout PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Timeout")
set_target_properties(title PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Title")
set_target_properties(windows PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Windows")
set_target_properties(${GUI_ONLY_BINARIES} PROPERTIES
MACOSX_BUNDLE_SHORT_VERSION_STRING ${GLFW_VERSION}
MACOSX_BUNDLE_LONG_VERSION_STRING ${GLFW_VERSION}
MACOSX_BUNDLE_INFO_PLIST "${GLFW_SOURCE_DIR}/CMake/MacOSXBundleInfo.plist.in")
endif()

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deps/glfw/tests/clipboard.c vendored Normal file
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//========================================================================
// Clipboard test program
// 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 program is used to test the clipboard functionality.
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include "getopt.h"
#if defined(__APPLE__)
#define MODIFIER GLFW_MOD_SUPER
#else
#define MODIFIER GLFW_MOD_CONTROL
#endif
static void usage(void)
{
printf("Usage: clipboard [-h]\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_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
case GLFW_KEY_V:
if (mods == MODIFIER)
{
const char* string;
string = glfwGetClipboardString(NULL);
if (string)
printf("Clipboard contains \"%s\"\n", string);
else
printf("Clipboard does not contain a string\n");
}
break;
case GLFW_KEY_C:
if (mods == MODIFIER)
{
const char* string = "Hello GLFW World!";
glfwSetClipboardString(NULL, string);
printf("Setting clipboard to \"%s\"\n", string);
}
break;
}
}
int main(int argc, char** argv)
{
int ch;
GLFWwindow* window;
while ((ch = getopt(argc, argv, "h")) != -1)
{
switch (ch)
{
case 'h':
usage();
exit(EXIT_SUCCESS);
default:
usage();
exit(EXIT_FAILURE);
}
}
glfwSetErrorCallback(error_callback);
if (!glfwInit())
{
fprintf(stderr, "Failed to initialize GLFW\n");
exit(EXIT_FAILURE);
}
window = glfwCreateWindow(200, 200, "Clipboard Test", NULL, NULL);
if (!window)
{
glfwTerminate();
fprintf(stderr, "Failed to open GLFW window\n");
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
glfwSetKeyCallback(window, key_callback);
glClearColor(0.5f, 0.5f, 0.5f, 0);
while (!glfwWindowShouldClose(window))
{
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwWaitEvents();
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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deps/glfw/tests/cursor.c vendored Normal file
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//========================================================================
// Cursor & input mode tests
// 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 provides an interface to the cursor image and cursor mode
// parts of the API.
//
// Custom cursor image generation by urraka.
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#if defined(_MSC_VER)
// Make MS math.h define M_PI
#define _USE_MATH_DEFINES
#endif
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "linmath.h"
#define CURSOR_FRAME_COUNT 60
static const char* vertex_shader_text =
"#version 110\n"
"uniform mat4 MVP;\n"
"attribute vec2 vPos;\n"
"void main()\n"
"{\n"
" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
"}\n";
static const char* fragment_shader_text =
"#version 110\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
static double cursor_x;
static double cursor_y;
static int swap_interval = 1;
static int wait_events = GLFW_TRUE;
static int animate_cursor = GLFW_FALSE;
static int track_cursor = GLFW_FALSE;
static GLFWcursor* standard_cursors[6];
static GLFWcursor* tracking_cursor = NULL;
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static float star(int x, int y, float t)
{
const float c = 64 / 2.f;
const float i = (0.25f * (float) sin(2.f * M_PI * t) + 0.75f);
const float k = 64 * 0.046875f * i;
const float dist = (float) sqrt((x - c) * (x - c) + (y - c) * (y - c));
const float salpha = 1.f - dist / c;
const float xalpha = (float) x == c ? c : k / (float) fabs(x - c);
const float yalpha = (float) y == c ? c : k / (float) fabs(y - c);
return (float) fmax(0.f, fmin(1.f, i * salpha * 0.2f + salpha * xalpha * yalpha));
}
static GLFWcursor* create_cursor_frame(float t)
{
int i = 0, x, y;
unsigned char buffer[64 * 64 * 4];
const GLFWimage image = { 64, 64, buffer };
for (y = 0; y < image.width; y++)
{
for (x = 0; x < image.height; x++)
{
buffer[i++] = 255;
buffer[i++] = 255;
buffer[i++] = 255;
buffer[i++] = (unsigned char) (255 * star(x, y, t));
}
}
return glfwCreateCursor(&image, image.width / 2, image.height / 2);
}
static GLFWcursor* create_tracking_cursor(void)
{
int i = 0, x, y;
unsigned char buffer[32 * 32 * 4];
const GLFWimage image = { 32, 32, buffer };
for (y = 0; y < image.width; y++)
{
for (x = 0; x < image.height; x++)
{
if (x == 7 || y == 7)
{
buffer[i++] = 255;
buffer[i++] = 0;
buffer[i++] = 0;
buffer[i++] = 255;
}
else
{
buffer[i++] = 0;
buffer[i++] = 0;
buffer[i++] = 0;
buffer[i++] = 0;
}
}
}
return glfwCreateCursor(&image, 7, 7);
}
static void cursor_position_callback(GLFWwindow* window, double x, double y)
{
printf("%0.3f: Cursor position: %f %f (%+f %+f)\n",
glfwGetTime(),
x, y, x - cursor_x, y - cursor_y);
cursor_x = x;
cursor_y = y;
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_A:
{
animate_cursor = !animate_cursor;
if (!animate_cursor)
glfwSetCursor(window, NULL);
break;
}
case GLFW_KEY_ESCAPE:
{
if (glfwGetInputMode(window, GLFW_CURSOR) != GLFW_CURSOR_DISABLED)
{
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
}
/* FALLTHROUGH */
}
case GLFW_KEY_N:
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
glfwGetCursorPos(window, &cursor_x, &cursor_y);
printf("(( cursor is normal ))\n");
break;
case GLFW_KEY_D:
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
printf("(( cursor is disabled ))\n");
break;
case GLFW_KEY_H:
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
printf("(( cursor is hidden ))\n");
break;
case GLFW_KEY_R:
if (!glfwRawMouseMotionSupported())
break;
if (glfwGetInputMode(window, GLFW_RAW_MOUSE_MOTION))
{
glfwSetInputMode(window, GLFW_RAW_MOUSE_MOTION, GLFW_FALSE);
printf("(( raw input is disabled ))\n");
}
else
{
glfwSetInputMode(window, GLFW_RAW_MOUSE_MOTION, GLFW_TRUE);
printf("(( raw input is enabled ))\n");
}
break;
case GLFW_KEY_SPACE:
swap_interval = 1 - swap_interval;
printf("(( swap interval: %i ))\n", swap_interval);
glfwSwapInterval(swap_interval);
break;
case GLFW_KEY_W:
wait_events = !wait_events;
printf("(( %sing for events ))\n", wait_events ? "wait" : "poll");
break;
case GLFW_KEY_T:
track_cursor = !track_cursor;
if (track_cursor)
glfwSetCursor(window, tracking_cursor);
else
glfwSetCursor(window, NULL);
break;
case GLFW_KEY_P:
{
double x, y;
glfwGetCursorPos(window, &x, &y);
printf("Query before set: %f %f (%+f %+f)\n",
x, y, x - cursor_x, y - cursor_y);
cursor_x = x;
cursor_y = y;
glfwSetCursorPos(window, cursor_x, cursor_y);
glfwGetCursorPos(window, &x, &y);
printf("Query after set: %f %f (%+f %+f)\n",
x, y, x - cursor_x, y - cursor_y);
cursor_x = x;
cursor_y = y;
break;
}
case GLFW_KEY_UP:
glfwSetCursorPos(window, 0, 0);
glfwGetCursorPos(window, &cursor_x, &cursor_y);
break;
case GLFW_KEY_DOWN:
{
int width, height;
glfwGetWindowSize(window, &width, &height);
glfwSetCursorPos(window, width - 1, height - 1);
glfwGetCursorPos(window, &cursor_x, &cursor_y);
break;
}
case GLFW_KEY_0:
glfwSetCursor(window, NULL);
break;
case GLFW_KEY_1:
glfwSetCursor(window, standard_cursors[0]);
break;
case GLFW_KEY_2:
glfwSetCursor(window, standard_cursors[1]);
break;
case GLFW_KEY_3:
glfwSetCursor(window, standard_cursors[2]);
break;
case GLFW_KEY_4:
glfwSetCursor(window, standard_cursors[3]);
break;
case GLFW_KEY_5:
glfwSetCursor(window, standard_cursors[4]);
break;
case GLFW_KEY_6:
glfwSetCursor(window, standard_cursors[5]);
break;
case GLFW_KEY_F11:
case GLFW_KEY_ENTER:
{
static int x, y, width, height;
if (mods != GLFW_MOD_ALT)
return;
if (glfwGetWindowMonitor(window))
glfwSetWindowMonitor(window, NULL, x, y, width, height, 0);
else
{
GLFWmonitor* monitor = glfwGetPrimaryMonitor();
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwGetWindowPos(window, &x, &y);
glfwGetWindowSize(window, &width, &height);
glfwSetWindowMonitor(window, monitor,
0, 0, mode->width, mode->height,
mode->refreshRate);
}
glfwGetCursorPos(window, &cursor_x, &cursor_y);
break;
}
}
}
int main(void)
{
int i;
GLFWwindow* window;
GLFWcursor* star_cursors[CURSOR_FRAME_COUNT];
GLFWcursor* current_frame = NULL;
GLuint vertex_buffer, vertex_shader, fragment_shader, program;
GLint mvp_location, vpos_location;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
tracking_cursor = create_tracking_cursor();
if (!tracking_cursor)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
for (i = 0; i < CURSOR_FRAME_COUNT; i++)
{
star_cursors[i] = create_cursor_frame(i / (float) CURSOR_FRAME_COUNT);
if (!star_cursors[i])
{
glfwTerminate();
exit(EXIT_FAILURE);
}
}
for (i = 0; i < sizeof(standard_cursors) / sizeof(standard_cursors[0]); i++)
{
const int shapes[] = {
GLFW_ARROW_CURSOR,
GLFW_IBEAM_CURSOR,
GLFW_CROSSHAIR_CURSOR,
GLFW_HAND_CURSOR,
GLFW_HRESIZE_CURSOR,
GLFW_VRESIZE_CURSOR
};
standard_cursors[i] = glfwCreateStandardCursor(shapes[i]);
if (!standard_cursors[i])
{
glfwTerminate();
exit(EXIT_FAILURE);
}
}
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
window = glfwCreateWindow(640, 480, "Cursor Test", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
glCompileShader(vertex_shader);
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
glCompileShader(fragment_shader);
program = glCreateProgram();
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
mvp_location = glGetUniformLocation(program, "MVP");
vpos_location = glGetAttribLocation(program, "vPos");
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vec2), (void*) 0);
glUseProgram(program);
glfwGetCursorPos(window, &cursor_x, &cursor_y);
printf("Cursor position: %f %f\n", cursor_x, cursor_y);
glfwSetCursorPosCallback(window, cursor_position_callback);
glfwSetKeyCallback(window, key_callback);
while (!glfwWindowShouldClose(window))
{
glClear(GL_COLOR_BUFFER_BIT);
if (track_cursor)
{
int wnd_width, wnd_height, fb_width, fb_height;
float scale;
vec2 vertices[4];
mat4x4 mvp;
glfwGetWindowSize(window, &wnd_width, &wnd_height);
glfwGetFramebufferSize(window, &fb_width, &fb_height);
glViewport(0, 0, fb_width, fb_height);
scale = (float) fb_width / (float) wnd_width;
vertices[0][0] = 0.5f;
vertices[0][1] = (float) (fb_height - floor(cursor_y * scale) - 1.f + 0.5f);
vertices[1][0] = (float) fb_width + 0.5f;
vertices[1][1] = (float) (fb_height - floor(cursor_y * scale) - 1.f + 0.5f);
vertices[2][0] = (float) floor(cursor_x * scale) + 0.5f;
vertices[2][1] = 0.5f;
vertices[3][0] = (float) floor(cursor_x * scale) + 0.5f;
vertices[3][1] = (float) fb_height + 0.5f;
glBufferData(GL_ARRAY_BUFFER,
sizeof(vertices),
vertices,
GL_STREAM_DRAW);
mat4x4_ortho(mvp, 0.f, (float) fb_width, 0.f, (float) fb_height, 0.f, 1.f);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glDrawArrays(GL_LINES, 0, 4);
}
glfwSwapBuffers(window);
if (animate_cursor)
{
const int i = (int) (glfwGetTime() * 30.0) % CURSOR_FRAME_COUNT;
if (current_frame != star_cursors[i])
{
glfwSetCursor(window, star_cursors[i]);
current_frame = star_cursors[i];
}
}
else
current_frame = NULL;
if (wait_events)
{
if (animate_cursor)
glfwWaitEventsTimeout(1.0 / 30.0);
else
glfwWaitEvents();
}
else
glfwPollEvents();
// Workaround for an issue with msvcrt and mintty
fflush(stdout);
}
glfwDestroyWindow(window);
for (i = 0; i < CURSOR_FRAME_COUNT; i++)
glfwDestroyCursor(star_cursors[i]);
for (i = 0; i < sizeof(standard_cursors) / sizeof(standard_cursors[0]); i++)
glfwDestroyCursor(standard_cursors[i]);
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Empty event 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 is intended to verify that posting of empty events works
//
//========================================================================
#include "tinycthread.h"
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
static volatile int running = GLFW_TRUE;
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static int thread_main(void* data)
{
struct timespec time;
while (running)
{
clock_gettime(CLOCK_REALTIME, &time);
time.tv_sec += 1;
thrd_sleep(&time, NULL);
glfwPostEmptyEvent();
}
return 0;
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
static float nrand(void)
{
return (float) rand() / (float) RAND_MAX;
}
int main(void)
{
int result;
thrd_t thread;
GLFWwindow* window;
srand((unsigned int) time(NULL));
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
window = glfwCreateWindow(640, 480, "Empty Event Test", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSetKeyCallback(window, key_callback);
if (thrd_create(&thread, thread_main, NULL) != thrd_success)
{
fprintf(stderr, "Failed to create secondary thread\n");
glfwTerminate();
exit(EXIT_FAILURE);
}
while (running)
{
int width, height;
float r = nrand(), g = nrand(), b = nrand();
float l = (float) sqrt(r * r + g * g + b * b);
glfwGetFramebufferSize(window, &width, &height);
glViewport(0, 0, width, height);
glClearColor(r / l, g / l, b / l, 1.f);
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwWaitEvents();
if (glfwWindowShouldClose(window))
running = GLFW_FALSE;
}
glfwHideWindow(window);
thrd_join(thread, &result);
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Event linter (event spewer)
// 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 hooks every available callback and outputs their arguments
//
// Log messages go to stdout, error messages to stderr
//
// Every event also gets a (sequential) number to aid discussion of logs
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <locale.h>
#include "getopt.h"
// Event index
static unsigned int counter = 0;
typedef struct
{
GLFWwindow* window;
int number;
int closeable;
} Slot;
static void usage(void)
{
printf("Usage: events [-f] [-h] [-n WINDOWS]\n");
printf("Options:\n");
printf(" -f use full screen\n");
printf(" -h show this help\n");
printf(" -n the number of windows to create\n");
}
static const char* get_key_name(int key)
{
switch (key)
{
// Printable keys
case GLFW_KEY_A: return "A";
case GLFW_KEY_B: return "B";
case GLFW_KEY_C: return "C";
case GLFW_KEY_D: return "D";
case GLFW_KEY_E: return "E";
case GLFW_KEY_F: return "F";
case GLFW_KEY_G: return "G";
case GLFW_KEY_H: return "H";
case GLFW_KEY_I: return "I";
case GLFW_KEY_J: return "J";
case GLFW_KEY_K: return "K";
case GLFW_KEY_L: return "L";
case GLFW_KEY_M: return "M";
case GLFW_KEY_N: return "N";
case GLFW_KEY_O: return "O";
case GLFW_KEY_P: return "P";
case GLFW_KEY_Q: return "Q";
case GLFW_KEY_R: return "R";
case GLFW_KEY_S: return "S";
case GLFW_KEY_T: return "T";
case GLFW_KEY_U: return "U";
case GLFW_KEY_V: return "V";
case GLFW_KEY_W: return "W";
case GLFW_KEY_X: return "X";
case GLFW_KEY_Y: return "Y";
case GLFW_KEY_Z: return "Z";
case GLFW_KEY_1: return "1";
case GLFW_KEY_2: return "2";
case GLFW_KEY_3: return "3";
case GLFW_KEY_4: return "4";
case GLFW_KEY_5: return "5";
case GLFW_KEY_6: return "6";
case GLFW_KEY_7: return "7";
case GLFW_KEY_8: return "8";
case GLFW_KEY_9: return "9";
case GLFW_KEY_0: return "0";
case GLFW_KEY_SPACE: return "SPACE";
case GLFW_KEY_MINUS: return "MINUS";
case GLFW_KEY_EQUAL: return "EQUAL";
case GLFW_KEY_LEFT_BRACKET: return "LEFT BRACKET";
case GLFW_KEY_RIGHT_BRACKET: return "RIGHT BRACKET";
case GLFW_KEY_BACKSLASH: return "BACKSLASH";
case GLFW_KEY_SEMICOLON: return "SEMICOLON";
case GLFW_KEY_APOSTROPHE: return "APOSTROPHE";
case GLFW_KEY_GRAVE_ACCENT: return "GRAVE ACCENT";
case GLFW_KEY_COMMA: return "COMMA";
case GLFW_KEY_PERIOD: return "PERIOD";
case GLFW_KEY_SLASH: return "SLASH";
case GLFW_KEY_WORLD_1: return "WORLD 1";
case GLFW_KEY_WORLD_2: return "WORLD 2";
// Function keys
case GLFW_KEY_ESCAPE: return "ESCAPE";
case GLFW_KEY_F1: return "F1";
case GLFW_KEY_F2: return "F2";
case GLFW_KEY_F3: return "F3";
case GLFW_KEY_F4: return "F4";
case GLFW_KEY_F5: return "F5";
case GLFW_KEY_F6: return "F6";
case GLFW_KEY_F7: return "F7";
case GLFW_KEY_F8: return "F8";
case GLFW_KEY_F9: return "F9";
case GLFW_KEY_F10: return "F10";
case GLFW_KEY_F11: return "F11";
case GLFW_KEY_F12: return "F12";
case GLFW_KEY_F13: return "F13";
case GLFW_KEY_F14: return "F14";
case GLFW_KEY_F15: return "F15";
case GLFW_KEY_F16: return "F16";
case GLFW_KEY_F17: return "F17";
case GLFW_KEY_F18: return "F18";
case GLFW_KEY_F19: return "F19";
case GLFW_KEY_F20: return "F20";
case GLFW_KEY_F21: return "F21";
case GLFW_KEY_F22: return "F22";
case GLFW_KEY_F23: return "F23";
case GLFW_KEY_F24: return "F24";
case GLFW_KEY_F25: return "F25";
case GLFW_KEY_UP: return "UP";
case GLFW_KEY_DOWN: return "DOWN";
case GLFW_KEY_LEFT: return "LEFT";
case GLFW_KEY_RIGHT: return "RIGHT";
case GLFW_KEY_LEFT_SHIFT: return "LEFT SHIFT";
case GLFW_KEY_RIGHT_SHIFT: return "RIGHT SHIFT";
case GLFW_KEY_LEFT_CONTROL: return "LEFT CONTROL";
case GLFW_KEY_RIGHT_CONTROL: return "RIGHT CONTROL";
case GLFW_KEY_LEFT_ALT: return "LEFT ALT";
case GLFW_KEY_RIGHT_ALT: return "RIGHT ALT";
case GLFW_KEY_TAB: return "TAB";
case GLFW_KEY_ENTER: return "ENTER";
case GLFW_KEY_BACKSPACE: return "BACKSPACE";
case GLFW_KEY_INSERT: return "INSERT";
case GLFW_KEY_DELETE: return "DELETE";
case GLFW_KEY_PAGE_UP: return "PAGE UP";
case GLFW_KEY_PAGE_DOWN: return "PAGE DOWN";
case GLFW_KEY_HOME: return "HOME";
case GLFW_KEY_END: return "END";
case GLFW_KEY_KP_0: return "KEYPAD 0";
case GLFW_KEY_KP_1: return "KEYPAD 1";
case GLFW_KEY_KP_2: return "KEYPAD 2";
case GLFW_KEY_KP_3: return "KEYPAD 3";
case GLFW_KEY_KP_4: return "KEYPAD 4";
case GLFW_KEY_KP_5: return "KEYPAD 5";
case GLFW_KEY_KP_6: return "KEYPAD 6";
case GLFW_KEY_KP_7: return "KEYPAD 7";
case GLFW_KEY_KP_8: return "KEYPAD 8";
case GLFW_KEY_KP_9: return "KEYPAD 9";
case GLFW_KEY_KP_DIVIDE: return "KEYPAD DIVIDE";
case GLFW_KEY_KP_MULTIPLY: return "KEYPAD MULTIPLY";
case GLFW_KEY_KP_SUBTRACT: return "KEYPAD SUBTRACT";
case GLFW_KEY_KP_ADD: return "KEYPAD ADD";
case GLFW_KEY_KP_DECIMAL: return "KEYPAD DECIMAL";
case GLFW_KEY_KP_EQUAL: return "KEYPAD EQUAL";
case GLFW_KEY_KP_ENTER: return "KEYPAD ENTER";
case GLFW_KEY_PRINT_SCREEN: return "PRINT SCREEN";
case GLFW_KEY_NUM_LOCK: return "NUM LOCK";
case GLFW_KEY_CAPS_LOCK: return "CAPS LOCK";
case GLFW_KEY_SCROLL_LOCK: return "SCROLL LOCK";
case GLFW_KEY_PAUSE: return "PAUSE";
case GLFW_KEY_LEFT_SUPER: return "LEFT SUPER";
case GLFW_KEY_RIGHT_SUPER: return "RIGHT SUPER";
case GLFW_KEY_MENU: return "MENU";
default: return "UNKNOWN";
}
}
static const char* get_action_name(int action)
{
switch (action)
{
case GLFW_PRESS:
return "pressed";
case GLFW_RELEASE:
return "released";
case GLFW_REPEAT:
return "repeated";
}
return "caused unknown action";
}
static const char* get_button_name(int button)
{
switch (button)
{
case GLFW_MOUSE_BUTTON_LEFT:
return "left";
case GLFW_MOUSE_BUTTON_RIGHT:
return "right";
case GLFW_MOUSE_BUTTON_MIDDLE:
return "middle";
default:
{
static char name[16];
snprintf(name, sizeof(name), "%i", button);
return name;
}
}
}
static const char* get_mods_name(int mods)
{
static char name[512];
if (mods == 0)
return " no mods";
name[0] = '\0';
if (mods & GLFW_MOD_SHIFT)
strcat(name, " shift");
if (mods & GLFW_MOD_CONTROL)
strcat(name, " control");
if (mods & GLFW_MOD_ALT)
strcat(name, " alt");
if (mods & GLFW_MOD_SUPER)
strcat(name, " super");
if (mods & GLFW_MOD_CAPS_LOCK)
strcat(name, " capslock-on");
if (mods & GLFW_MOD_NUM_LOCK)
strcat(name, " numlock-on");
return name;
}
static size_t encode_utf8(char* s, unsigned int ch)
{
size_t count = 0;
if (ch < 0x80)
s[count++] = (char) ch;
else if (ch < 0x800)
{
s[count++] = (ch >> 6) | 0xc0;
s[count++] = (ch & 0x3f) | 0x80;
}
else if (ch < 0x10000)
{
s[count++] = (ch >> 12) | 0xe0;
s[count++] = ((ch >> 6) & 0x3f) | 0x80;
s[count++] = (ch & 0x3f) | 0x80;
}
else if (ch < 0x110000)
{
s[count++] = (ch >> 18) | 0xf0;
s[count++] = ((ch >> 12) & 0x3f) | 0x80;
s[count++] = ((ch >> 6) & 0x3f) | 0x80;
s[count++] = (ch & 0x3f) | 0x80;
}
return count;
}
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static void window_pos_callback(GLFWwindow* window, int x, int y)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Window position: %i %i\n",
counter++, slot->number, glfwGetTime(), x, y);
}
static void window_size_callback(GLFWwindow* window, int width, int height)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Window size: %i %i\n",
counter++, slot->number, glfwGetTime(), width, height);
}
static void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Framebuffer size: %i %i\n",
counter++, slot->number, glfwGetTime(), width, height);
}
static void window_content_scale_callback(GLFWwindow* window, float xscale, float yscale)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Window content scale: %0.3f %0.3f\n",
counter++, slot->number, glfwGetTime(), xscale, yscale);
}
static void window_close_callback(GLFWwindow* window)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Window close\n",
counter++, slot->number, glfwGetTime());
glfwSetWindowShouldClose(window, slot->closeable);
}
static void window_refresh_callback(GLFWwindow* window)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Window refresh\n",
counter++, slot->number, glfwGetTime());
glfwMakeContextCurrent(window);
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
}
static void window_focus_callback(GLFWwindow* window, int focused)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Window %s\n",
counter++, slot->number, glfwGetTime(),
focused ? "focused" : "defocused");
}
static void window_iconify_callback(GLFWwindow* window, int iconified)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Window was %s\n",
counter++, slot->number, glfwGetTime(),
iconified ? "iconified" : "uniconified");
}
static void window_maximize_callback(GLFWwindow* window, int maximized)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Window was %s\n",
counter++, slot->number, glfwGetTime(),
maximized ? "maximized" : "unmaximized");
}
static void mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Mouse button %i (%s) (with%s) was %s\n",
counter++, slot->number, glfwGetTime(), button,
get_button_name(button),
get_mods_name(mods),
get_action_name(action));
}
static void cursor_position_callback(GLFWwindow* window, double x, double y)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Cursor position: %f %f\n",
counter++, slot->number, glfwGetTime(), x, y);
}
static void cursor_enter_callback(GLFWwindow* window, int entered)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Cursor %s window\n",
counter++, slot->number, glfwGetTime(),
entered ? "entered" : "left");
}
static void scroll_callback(GLFWwindow* window, double x, double y)
{
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Scroll: %0.3f %0.3f\n",
counter++, slot->number, glfwGetTime(), x, y);
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
Slot* slot = glfwGetWindowUserPointer(window);
const char* name = glfwGetKeyName(key, scancode);
if (name)
{
printf("%08x to %i at %0.3f: Key 0x%04x Scancode 0x%04x (%s) (%s) (with%s) was %s\n",
counter++, slot->number, glfwGetTime(), key, scancode,
get_key_name(key),
name,
get_mods_name(mods),
get_action_name(action));
}
else
{
printf("%08x to %i at %0.3f: Key 0x%04x Scancode 0x%04x (%s) (with%s) was %s\n",
counter++, slot->number, glfwGetTime(), key, scancode,
get_key_name(key),
get_mods_name(mods),
get_action_name(action));
}
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_C:
{
slot->closeable = !slot->closeable;
printf("(( closing %s ))\n", slot->closeable ? "enabled" : "disabled");
break;
}
case GLFW_KEY_L:
{
const int state = glfwGetInputMode(window, GLFW_LOCK_KEY_MODS);
glfwSetInputMode(window, GLFW_LOCK_KEY_MODS, !state);
printf("(( lock key mods %s ))\n", !state ? "enabled" : "disabled");
break;
}
}
}
static void char_callback(GLFWwindow* window, unsigned int codepoint)
{
Slot* slot = glfwGetWindowUserPointer(window);
char string[5] = "";
encode_utf8(string, codepoint);
printf("%08x to %i at %0.3f: Character 0x%08x (%s) input\n",
counter++, slot->number, glfwGetTime(), codepoint, string);
}
static void drop_callback(GLFWwindow* window, int count, const char* paths[])
{
int i;
Slot* slot = glfwGetWindowUserPointer(window);
printf("%08x to %i at %0.3f: Drop input\n",
counter++, slot->number, glfwGetTime());
for (i = 0; i < count; i++)
printf(" %i: \"%s\"\n", i, paths[i]);
}
static void monitor_callback(GLFWmonitor* monitor, int event)
{
if (event == GLFW_CONNECTED)
{
int x, y, widthMM, heightMM;
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwGetMonitorPos(monitor, &x, &y);
glfwGetMonitorPhysicalSize(monitor, &widthMM, &heightMM);
printf("%08x at %0.3f: Monitor %s (%ix%i at %ix%i, %ix%i mm) was connected\n",
counter++,
glfwGetTime(),
glfwGetMonitorName(monitor),
mode->width, mode->height,
x, y,
widthMM, heightMM);
}
else if (event == GLFW_DISCONNECTED)
{
printf("%08x at %0.3f: Monitor %s was disconnected\n",
counter++,
glfwGetTime(),
glfwGetMonitorName(monitor));
}
}
static void joystick_callback(int jid, int event)
{
if (event == GLFW_CONNECTED)
{
int axisCount, buttonCount, hatCount;
glfwGetJoystickAxes(jid, &axisCount);
glfwGetJoystickButtons(jid, &buttonCount);
glfwGetJoystickHats(jid, &hatCount);
printf("%08x at %0.3f: Joystick %i (%s) was connected with %i axes, %i buttons, and %i hats\n",
counter++, glfwGetTime(),
jid,
glfwGetJoystickName(jid),
axisCount,
buttonCount,
hatCount);
}
else
{
printf("%08x at %0.3f: Joystick %i was disconnected\n",
counter++, glfwGetTime(), jid);
}
}
int main(int argc, char** argv)
{
Slot* slots;
GLFWmonitor* monitor = NULL;
int ch, i, width, height, count = 1;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
printf("Library initialized\n");
glfwSetMonitorCallback(monitor_callback);
glfwSetJoystickCallback(joystick_callback);
while ((ch = getopt(argc, argv, "hfn:")) != -1)
{
switch (ch)
{
case 'h':
usage();
exit(EXIT_SUCCESS);
case 'f':
monitor = glfwGetPrimaryMonitor();
break;
case 'n':
count = (int) strtoul(optarg, NULL, 10);
break;
default:
usage();
exit(EXIT_FAILURE);
}
}
if (monitor)
{
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwWindowHint(GLFW_REFRESH_RATE, mode->refreshRate);
glfwWindowHint(GLFW_RED_BITS, mode->redBits);
glfwWindowHint(GLFW_GREEN_BITS, mode->greenBits);
glfwWindowHint(GLFW_BLUE_BITS, mode->blueBits);
width = mode->width;
height = mode->height;
}
else
{
width = 640;
height = 480;
}
slots = calloc(count, sizeof(Slot));
for (i = 0; i < count; i++)
{
char title[128];
slots[i].closeable = GLFW_TRUE;
slots[i].number = i + 1;
snprintf(title, sizeof(title), "Event Linter (Window %i)", slots[i].number);
if (monitor)
{
printf("Creating full screen window %i (%ix%i on %s)\n",
slots[i].number,
width, height,
glfwGetMonitorName(monitor));
}
else
{
printf("Creating windowed mode window %i (%ix%i)\n",
slots[i].number,
width, height);
}
slots[i].window = glfwCreateWindow(width, height, title, monitor, NULL);
if (!slots[i].window)
{
free(slots);
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetWindowUserPointer(slots[i].window, slots + i);
glfwSetWindowPosCallback(slots[i].window, window_pos_callback);
glfwSetWindowSizeCallback(slots[i].window, window_size_callback);
glfwSetFramebufferSizeCallback(slots[i].window, framebuffer_size_callback);
glfwSetWindowContentScaleCallback(slots[i].window, window_content_scale_callback);
glfwSetWindowCloseCallback(slots[i].window, window_close_callback);
glfwSetWindowRefreshCallback(slots[i].window, window_refresh_callback);
glfwSetWindowFocusCallback(slots[i].window, window_focus_callback);
glfwSetWindowIconifyCallback(slots[i].window, window_iconify_callback);
glfwSetWindowMaximizeCallback(slots[i].window, window_maximize_callback);
glfwSetMouseButtonCallback(slots[i].window, mouse_button_callback);
glfwSetCursorPosCallback(slots[i].window, cursor_position_callback);
glfwSetCursorEnterCallback(slots[i].window, cursor_enter_callback);
glfwSetScrollCallback(slots[i].window, scroll_callback);
glfwSetKeyCallback(slots[i].window, key_callback);
glfwSetCharCallback(slots[i].window, char_callback);
glfwSetDropCallback(slots[i].window, drop_callback);
glfwMakeContextCurrent(slots[i].window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
}
printf("Main loop starting\n");
for (;;)
{
for (i = 0; i < count; i++)
{
if (glfwWindowShouldClose(slots[i].window))
break;
}
if (i < count)
break;
glfwWaitEvents();
// Workaround for an issue with msvcrt and mintty
fflush(stdout);
}
free(slots);
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Gamma correction test program
// 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 program is used to test the gamma correction functionality for
// both full screen and windowed mode windows
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#define NK_IMPLEMENTATION
#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_STANDARD_VARARGS
#define NK_BUTTON_TRIGGER_ON_RELEASE
#include <nuklear.h>
#define NK_GLFW_GL2_IMPLEMENTATION
#include <nuklear_glfw_gl2.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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 && key == GLFW_KEY_ESCAPE)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
static void chart_ramp_array(struct nk_context* nk,
struct nk_color color,
int count, unsigned short int* values)
{
if (nk_chart_begin_colored(nk, NK_CHART_LINES,
color, nk_rgb(255, 255, 255),
count, 0, 65535))
{
int i;
for (i = 0; i < count; i++)
{
char buffer[1024];
if (nk_chart_push(nk, values[i]))
{
snprintf(buffer, sizeof(buffer), "#%u: %u (%0.5f) ",
i, values[i], values[i] / 65535.f);
nk_tooltip(nk, buffer);
}
}
nk_chart_end(nk);
}
}
int main(int argc, char** argv)
{
GLFWmonitor* monitor = NULL;
GLFWwindow* window;
GLFWgammaramp orig_ramp;
struct nk_context* nk;
struct nk_font_atlas* atlas;
float gamma_value = 1.f;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
monitor = glfwGetPrimaryMonitor();
glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
window = glfwCreateWindow(800, 400, "Gamma Test", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
{
const GLFWgammaramp* ramp = glfwGetGammaRamp(monitor);
const size_t array_size = ramp->size * sizeof(short);
orig_ramp.size = ramp->size;
orig_ramp.red = malloc(array_size);
orig_ramp.green = malloc(array_size);
orig_ramp.blue = malloc(array_size);
memcpy(orig_ramp.red, ramp->red, array_size);
memcpy(orig_ramp.green, ramp->green, array_size);
memcpy(orig_ramp.blue, ramp->blue, array_size);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
nk = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS);
nk_glfw3_font_stash_begin(&atlas);
nk_glfw3_font_stash_end();
glfwSetKeyCallback(window, key_callback);
while (!glfwWindowShouldClose(window))
{
int width, height;
struct nk_rect area;
glfwGetWindowSize(window, &width, &height);
area = nk_rect(0.f, 0.f, (float) width, (float) height);
nk_window_set_bounds(nk, "", area);
glClear(GL_COLOR_BUFFER_BIT);
nk_glfw3_new_frame();
if (nk_begin(nk, "", area, 0))
{
const GLFWgammaramp* ramp;
nk_layout_row_dynamic(nk, 30, 3);
if (nk_slider_float(nk, 0.1f, &gamma_value, 5.f, 0.1f))
glfwSetGamma(monitor, gamma_value);
nk_labelf(nk, NK_TEXT_LEFT, "%0.1f", gamma_value);
if (nk_button_label(nk, "Revert"))
glfwSetGammaRamp(monitor, &orig_ramp);
ramp = glfwGetGammaRamp(monitor);
nk_layout_row_dynamic(nk, height - 60.f, 3);
chart_ramp_array(nk, nk_rgb(255, 0, 0), ramp->size, ramp->red);
chart_ramp_array(nk, nk_rgb(0, 255, 0), ramp->size, ramp->green);
chart_ramp_array(nk, nk_rgb(0, 0, 255), ramp->size, ramp->blue);
}
nk_end(nk);
nk_glfw3_render(NK_ANTI_ALIASING_ON);
glfwSwapBuffers(window);
glfwWaitEventsTimeout(1.0);
}
free(orig_ramp.red);
free(orig_ramp.green);
free(orig_ramp.blue);
nk_glfw3_shutdown();
glfwTerminate();
exit(EXIT_SUCCESS);
}

920
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@ -0,0 +1,920 @@
//========================================================================
// Context creation and information tool
// 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.
//
//========================================================================
#include <glad/gl.h>
#include <glad/vulkan.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "getopt.h"
#ifdef _MSC_VER
#define strcasecmp(x, y) _stricmp(x, y)
#endif
#define API_NAME_OPENGL "gl"
#define API_NAME_OPENGL_ES "es"
#define API_NAME_NATIVE "native"
#define API_NAME_EGL "egl"
#define API_NAME_OSMESA "osmesa"
#define PROFILE_NAME_CORE "core"
#define PROFILE_NAME_COMPAT "compat"
#define STRATEGY_NAME_NONE "none"
#define STRATEGY_NAME_LOSE "lose"
#define BEHAVIOR_NAME_NONE "none"
#define BEHAVIOR_NAME_FLUSH "flush"
static void usage(void)
{
printf("Usage: glfwinfo [OPTION]...\n");
printf("Options:\n");
printf(" -a, --client-api=API the client API to use ("
API_NAME_OPENGL " or "
API_NAME_OPENGL_ES ")\n");
printf(" -b, --behavior=BEHAVIOR the release behavior to use ("
BEHAVIOR_NAME_NONE " or "
BEHAVIOR_NAME_FLUSH ")\n");
printf(" -c, --context-api=API the context creation API to use ("
API_NAME_NATIVE " or "
API_NAME_EGL " or "
API_NAME_OSMESA ")\n");
printf(" -d, --debug request a debug context\n");
printf(" -f, --forward require a forward-compatible context\n");
printf(" -h, --help show this help\n");
printf(" -l, --list-extensions list all Vulkan and client API extensions\n");
printf(" --list-layers list all Vulkan layers\n");
printf(" -m, --major=MAJOR the major number of the required "
"client API version\n");
printf(" -n, --minor=MINOR the minor number of the required "
"client API version\n");
printf(" -p, --profile=PROFILE the OpenGL profile to use ("
PROFILE_NAME_CORE " or "
PROFILE_NAME_COMPAT ")\n");
printf(" -s, --robustness=STRATEGY the robustness strategy to use ("
STRATEGY_NAME_NONE " or "
STRATEGY_NAME_LOSE ")\n");
printf(" -v, --version print version information\n");
printf(" --red-bits=N the number of red bits to request\n");
printf(" --green-bits=N the number of green bits to request\n");
printf(" --blue-bits=N the number of blue bits to request\n");
printf(" --alpha-bits=N the number of alpha bits to request\n");
printf(" --depth-bits=N the number of depth bits to request\n");
printf(" --stencil-bits=N the number of stencil bits to request\n");
printf(" --accum-red-bits=N the number of red bits to request\n");
printf(" --accum-green-bits=N the number of green bits to request\n");
printf(" --accum-blue-bits=N the number of blue bits to request\n");
printf(" --accum-alpha-bits=N the number of alpha bits to request\n");
printf(" --aux-buffers=N the number of aux buffers to request\n");
printf(" --samples=N the number of MSAA samples to request\n");
printf(" --stereo request stereo rendering\n");
printf(" --srgb request an sRGB capable framebuffer\n");
printf(" --singlebuffer request single-buffering\n");
printf(" --no-error request a context that does not emit errors\n");
printf(" --graphics-switching request macOS graphics switching\n");
}
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static const char* get_device_type_name(VkPhysicalDeviceType type)
{
if (type == VK_PHYSICAL_DEVICE_TYPE_OTHER)
return "other";
else if (type == VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU)
return "integrated GPU";
else if (type == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU)
return "discrete GPU";
else if (type == VK_PHYSICAL_DEVICE_TYPE_VIRTUAL_GPU)
return "virtual GPU";
else if (type == VK_PHYSICAL_DEVICE_TYPE_CPU)
return "CPU";
return "unknown";
}
static const char* get_api_name(int api)
{
if (api == GLFW_OPENGL_API)
return "OpenGL";
else if (api == GLFW_OPENGL_ES_API)
return "OpenGL ES";
return "Unknown API";
}
static const char* get_profile_name_gl(GLint mask)
{
if (mask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT)
return PROFILE_NAME_COMPAT;
if (mask & GL_CONTEXT_CORE_PROFILE_BIT)
return PROFILE_NAME_CORE;
return "unknown";
}
static const char* get_profile_name_glfw(int profile)
{
if (profile == GLFW_OPENGL_COMPAT_PROFILE)
return PROFILE_NAME_COMPAT;
if (profile == GLFW_OPENGL_CORE_PROFILE)
return PROFILE_NAME_CORE;
return "unknown";
}
static const char* get_strategy_name_gl(GLint strategy)
{
if (strategy == GL_LOSE_CONTEXT_ON_RESET_ARB)
return STRATEGY_NAME_LOSE;
if (strategy == GL_NO_RESET_NOTIFICATION_ARB)
return STRATEGY_NAME_NONE;
return "unknown";
}
static const char* get_strategy_name_glfw(int strategy)
{
if (strategy == GLFW_LOSE_CONTEXT_ON_RESET)
return STRATEGY_NAME_LOSE;
if (strategy == GLFW_NO_RESET_NOTIFICATION)
return STRATEGY_NAME_NONE;
return "unknown";
}
static void list_context_extensions(int client, int major, int minor)
{
int i;
GLint count;
const GLubyte* extensions;
printf("%s context extensions:\n", get_api_name(client));
if (client == GLFW_OPENGL_API && major > 2)
{
glGetIntegerv(GL_NUM_EXTENSIONS, &count);
for (i = 0; i < count; i++)
printf(" %s\n", (const char*) glGetStringi(GL_EXTENSIONS, i));
}
else
{
extensions = glGetString(GL_EXTENSIONS);
while (*extensions != '\0')
{
putchar(' ');
while (*extensions != '\0' && *extensions != ' ')
{
putchar(*extensions);
extensions++;
}
while (*extensions == ' ')
extensions++;
putchar('\n');
}
}
}
static void list_vulkan_instance_extensions(void)
{
uint32_t i, ep_count = 0;
VkExtensionProperties* ep;
printf("Vulkan instance extensions:\n");
if (vkEnumerateInstanceExtensionProperties(NULL, &ep_count, NULL) != VK_SUCCESS)
return;
ep = calloc(ep_count, sizeof(VkExtensionProperties));
if (vkEnumerateInstanceExtensionProperties(NULL, &ep_count, ep) != VK_SUCCESS)
{
free(ep);
return;
}
for (i = 0; i < ep_count; i++)
printf(" %s (v%u)\n", ep[i].extensionName, ep[i].specVersion);
free(ep);
}
static void list_vulkan_instance_layers(void)
{
uint32_t i, lp_count = 0;
VkLayerProperties* lp;
printf("Vulkan instance layers:\n");
if (vkEnumerateInstanceLayerProperties(&lp_count, NULL) != VK_SUCCESS)
return;
lp = calloc(lp_count, sizeof(VkLayerProperties));
if (vkEnumerateInstanceLayerProperties(&lp_count, lp) != VK_SUCCESS)
{
free(lp);
return;
}
for (i = 0; i < lp_count; i++)
{
printf(" %s (v%u) \"%s\"\n",
lp[i].layerName,
lp[i].specVersion >> 22,
lp[i].description);
}
free(lp);
}
static void list_vulkan_device_extensions(VkInstance instance, VkPhysicalDevice device)
{
uint32_t i, ep_count;
VkExtensionProperties* ep;
printf("Vulkan device extensions:\n");
if (vkEnumerateDeviceExtensionProperties(device, NULL, &ep_count, NULL) != VK_SUCCESS)
return;
ep = calloc(ep_count, sizeof(VkExtensionProperties));
if (vkEnumerateDeviceExtensionProperties(device, NULL, &ep_count, ep) != VK_SUCCESS)
{
free(ep);
return;
}
for (i = 0; i < ep_count; i++)
printf(" %s (v%u)\n", ep[i].extensionName, ep[i].specVersion);
free(ep);
}
static void list_vulkan_device_layers(VkInstance instance, VkPhysicalDevice device)
{
uint32_t i, lp_count;
VkLayerProperties* lp;
printf("Vulkan device layers:\n");
if (vkEnumerateDeviceLayerProperties(device, &lp_count, NULL) != VK_SUCCESS)
return;
lp = calloc(lp_count, sizeof(VkLayerProperties));
if (vkEnumerateDeviceLayerProperties(device, &lp_count, lp) != VK_SUCCESS)
{
free(lp);
return;
}
for (i = 0; i < lp_count; i++)
{
printf(" %s (v%u) \"%s\"\n",
lp[i].layerName,
lp[i].specVersion >> 22,
lp[i].description);
}
free(lp);
}
static int valid_version(void)
{
int major, minor, revision;
glfwGetVersion(&major, &minor, &revision);
if (major != GLFW_VERSION_MAJOR)
{
printf("*** ERROR: GLFW major version mismatch! ***\n");
return GLFW_FALSE;
}
if (minor != GLFW_VERSION_MINOR || revision != GLFW_VERSION_REVISION)
printf("*** WARNING: GLFW version mismatch! ***\n");
return GLFW_TRUE;
}
static void print_version(void)
{
int major, minor, revision;
glfwGetVersion(&major, &minor, &revision);
printf("GLFW header version: %u.%u.%u\n",
GLFW_VERSION_MAJOR,
GLFW_VERSION_MINOR,
GLFW_VERSION_REVISION);
printf("GLFW library version: %u.%u.%u\n", major, minor, revision);
printf("GLFW library version string: \"%s\"\n", glfwGetVersionString());
}
static GLADapiproc glad_vulkan_callback(const char* name, void* user)
{
return glfwGetInstanceProcAddress((VkInstance) user, name);
}
int main(int argc, char** argv)
{
int ch, client, major, minor, revision, profile;
GLint redbits, greenbits, bluebits, alphabits, depthbits, stencilbits;
int list_extensions = GLFW_FALSE, list_layers = GLFW_FALSE;
GLenum error;
GLFWwindow* window;
enum { CLIENT, CONTEXT, BEHAVIOR, DEBUG_CONTEXT, FORWARD, HELP,
EXTENSIONS, LAYERS,
MAJOR, MINOR, PROFILE, ROBUSTNESS, VERSION,
REDBITS, GREENBITS, BLUEBITS, ALPHABITS, DEPTHBITS, STENCILBITS,
ACCUMREDBITS, ACCUMGREENBITS, ACCUMBLUEBITS, ACCUMALPHABITS,
AUXBUFFERS, SAMPLES, STEREO, SRGB, SINGLEBUFFER, NOERROR_SRSLY,
GRAPHICS_SWITCHING };
const struct option options[] =
{
{ "behavior", 1, NULL, BEHAVIOR },
{ "client-api", 1, NULL, CLIENT },
{ "context-api", 1, NULL, CONTEXT },
{ "debug", 0, NULL, DEBUG_CONTEXT },
{ "forward", 0, NULL, FORWARD },
{ "help", 0, NULL, HELP },
{ "list-extensions", 0, NULL, EXTENSIONS },
{ "list-layers", 0, NULL, LAYERS },
{ "major", 1, NULL, MAJOR },
{ "minor", 1, NULL, MINOR },
{ "profile", 1, NULL, PROFILE },
{ "robustness", 1, NULL, ROBUSTNESS },
{ "version", 0, NULL, VERSION },
{ "red-bits", 1, NULL, REDBITS },
{ "green-bits", 1, NULL, GREENBITS },
{ "blue-bits", 1, NULL, BLUEBITS },
{ "alpha-bits", 1, NULL, ALPHABITS },
{ "depth-bits", 1, NULL, DEPTHBITS },
{ "stencil-bits", 1, NULL, STENCILBITS },
{ "accum-red-bits", 1, NULL, ACCUMREDBITS },
{ "accum-green-bits", 1, NULL, ACCUMGREENBITS },
{ "accum-blue-bits", 1, NULL, ACCUMBLUEBITS },
{ "accum-alpha-bits", 1, NULL, ACCUMALPHABITS },
{ "aux-buffers", 1, NULL, AUXBUFFERS },
{ "samples", 1, NULL, SAMPLES },
{ "stereo", 0, NULL, STEREO },
{ "srgb", 0, NULL, SRGB },
{ "singlebuffer", 0, NULL, SINGLEBUFFER },
{ "no-error", 0, NULL, NOERROR_SRSLY },
{ "graphics-switching", 0, NULL, GRAPHICS_SWITCHING },
{ NULL, 0, NULL, 0 }
};
// Initialize GLFW and create window
if (!valid_version())
exit(EXIT_FAILURE);
glfwSetErrorCallback(error_callback);
glfwInitHint(GLFW_COCOA_MENUBAR, GLFW_FALSE);
if (!glfwInit())
exit(EXIT_FAILURE);
while ((ch = getopt_long(argc, argv, "a:b:c:dfhlm:n:p:s:v", options, NULL)) != -1)
{
switch (ch)
{
case 'a':
case CLIENT:
if (strcasecmp(optarg, API_NAME_OPENGL) == 0)
glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_API);
else if (strcasecmp(optarg, API_NAME_OPENGL_ES) == 0)
glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
else
{
usage();
exit(EXIT_FAILURE);
}
break;
case 'b':
case BEHAVIOR:
if (strcasecmp(optarg, BEHAVIOR_NAME_NONE) == 0)
{
glfwWindowHint(GLFW_CONTEXT_RELEASE_BEHAVIOR,
GLFW_RELEASE_BEHAVIOR_NONE);
}
else if (strcasecmp(optarg, BEHAVIOR_NAME_FLUSH) == 0)
{
glfwWindowHint(GLFW_CONTEXT_RELEASE_BEHAVIOR,
GLFW_RELEASE_BEHAVIOR_FLUSH);
}
else
{
usage();
exit(EXIT_FAILURE);
}
break;
case 'c':
case CONTEXT:
if (strcasecmp(optarg, API_NAME_NATIVE) == 0)
glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_NATIVE_CONTEXT_API);
else if (strcasecmp(optarg, API_NAME_EGL) == 0)
glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_EGL_CONTEXT_API);
else if (strcasecmp(optarg, API_NAME_OSMESA) == 0)
glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_OSMESA_CONTEXT_API);
else
{
usage();
exit(EXIT_FAILURE);
}
break;
case 'd':
case DEBUG_CONTEXT:
glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GLFW_TRUE);
break;
case 'f':
case FORWARD:
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE);
break;
case 'h':
case HELP:
usage();
exit(EXIT_SUCCESS);
case 'l':
case EXTENSIONS:
list_extensions = GLFW_TRUE;
break;
case LAYERS:
list_layers = GLFW_TRUE;
break;
case 'm':
case MAJOR:
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, atoi(optarg));
break;
case 'n':
case MINOR:
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, atoi(optarg));
break;
case 'p':
case PROFILE:
if (strcasecmp(optarg, PROFILE_NAME_CORE) == 0)
{
glfwWindowHint(GLFW_OPENGL_PROFILE,
GLFW_OPENGL_CORE_PROFILE);
}
else if (strcasecmp(optarg, PROFILE_NAME_COMPAT) == 0)
{
glfwWindowHint(GLFW_OPENGL_PROFILE,
GLFW_OPENGL_COMPAT_PROFILE);
}
else
{
usage();
exit(EXIT_FAILURE);
}
break;
case 's':
case ROBUSTNESS:
if (strcasecmp(optarg, STRATEGY_NAME_NONE) == 0)
{
glfwWindowHint(GLFW_CONTEXT_ROBUSTNESS,
GLFW_NO_RESET_NOTIFICATION);
}
else if (strcasecmp(optarg, STRATEGY_NAME_LOSE) == 0)
{
glfwWindowHint(GLFW_CONTEXT_ROBUSTNESS,
GLFW_LOSE_CONTEXT_ON_RESET);
}
else
{
usage();
exit(EXIT_FAILURE);
}
break;
case 'v':
case VERSION:
print_version();
exit(EXIT_SUCCESS);
case REDBITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_RED_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_RED_BITS, atoi(optarg));
break;
case GREENBITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_GREEN_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_GREEN_BITS, atoi(optarg));
break;
case BLUEBITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_BLUE_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_BLUE_BITS, atoi(optarg));
break;
case ALPHABITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_ALPHA_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_ALPHA_BITS, atoi(optarg));
break;
case DEPTHBITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_DEPTH_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_DEPTH_BITS, atoi(optarg));
break;
case STENCILBITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_STENCIL_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_STENCIL_BITS, atoi(optarg));
break;
case ACCUMREDBITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_ACCUM_RED_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_ACCUM_RED_BITS, atoi(optarg));
break;
case ACCUMGREENBITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_ACCUM_GREEN_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_ACCUM_GREEN_BITS, atoi(optarg));
break;
case ACCUMBLUEBITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_ACCUM_BLUE_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_ACCUM_BLUE_BITS, atoi(optarg));
break;
case ACCUMALPHABITS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_ACCUM_ALPHA_BITS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_ACCUM_ALPHA_BITS, atoi(optarg));
break;
case AUXBUFFERS:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_AUX_BUFFERS, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_AUX_BUFFERS, atoi(optarg));
break;
case SAMPLES:
if (strcmp(optarg, "-") == 0)
glfwWindowHint(GLFW_SAMPLES, GLFW_DONT_CARE);
else
glfwWindowHint(GLFW_SAMPLES, atoi(optarg));
break;
case STEREO:
glfwWindowHint(GLFW_STEREO, GLFW_TRUE);
break;
case SRGB:
glfwWindowHint(GLFW_SRGB_CAPABLE, GLFW_TRUE);
break;
case SINGLEBUFFER:
glfwWindowHint(GLFW_DOUBLEBUFFER, GLFW_FALSE);
break;
case NOERROR_SRSLY:
glfwWindowHint(GLFW_CONTEXT_NO_ERROR, GLFW_TRUE);
break;
case GRAPHICS_SWITCHING:
glfwWindowHint(GLFW_COCOA_GRAPHICS_SWITCHING, GLFW_TRUE);
break;
default:
usage();
exit(EXIT_FAILURE);
}
}
print_version();
glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
window = glfwCreateWindow(200, 200, "Version", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
error = glGetError();
if (error != GL_NO_ERROR)
printf("*** OpenGL error after make current: 0x%08x ***\n", error);
// Report client API version
client = glfwGetWindowAttrib(window, GLFW_CLIENT_API);
major = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MAJOR);
minor = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MINOR);
revision = glfwGetWindowAttrib(window, GLFW_CONTEXT_REVISION);
profile = glfwGetWindowAttrib(window, GLFW_OPENGL_PROFILE);
printf("%s context version string: \"%s\"\n",
get_api_name(client),
glGetString(GL_VERSION));
printf("%s context version parsed by GLFW: %u.%u.%u\n",
get_api_name(client),
major, minor, revision);
// Report client API context properties
if (client == GLFW_OPENGL_API)
{
if (major >= 3)
{
GLint flags;
glGetIntegerv(GL_CONTEXT_FLAGS, &flags);
printf("%s context flags (0x%08x):", get_api_name(client), flags);
if (flags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
printf(" forward-compatible");
if (flags & 2/*GL_CONTEXT_FLAG_DEBUG_BIT*/)
printf(" debug");
if (flags & GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB)
printf(" robustness");
if (flags & 8/*GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR*/)
printf(" no-error");
putchar('\n');
printf("%s context flags parsed by GLFW:", get_api_name(client));
if (glfwGetWindowAttrib(window, GLFW_OPENGL_FORWARD_COMPAT))
printf(" forward-compatible");
if (glfwGetWindowAttrib(window, GLFW_OPENGL_DEBUG_CONTEXT))
printf(" debug");
if (glfwGetWindowAttrib(window, GLFW_CONTEXT_ROBUSTNESS) == GLFW_LOSE_CONTEXT_ON_RESET)
printf(" robustness");
if (glfwGetWindowAttrib(window, GLFW_CONTEXT_NO_ERROR))
printf(" no-error");
putchar('\n');
}
if (major >= 4 || (major == 3 && minor >= 2))
{
GLint mask;
glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &mask);
printf("%s profile mask (0x%08x): %s\n",
get_api_name(client),
mask,
get_profile_name_gl(mask));
printf("%s profile mask parsed by GLFW: %s\n",
get_api_name(client),
get_profile_name_glfw(profile));
}
if (GLAD_GL_ARB_robustness)
{
const int robustness = glfwGetWindowAttrib(window, GLFW_CONTEXT_ROBUSTNESS);
GLint strategy;
glGetIntegerv(GL_RESET_NOTIFICATION_STRATEGY_ARB, &strategy);
printf("%s robustness strategy (0x%08x): %s\n",
get_api_name(client),
strategy,
get_strategy_name_gl(strategy));
printf("%s robustness strategy parsed by GLFW: %s\n",
get_api_name(client),
get_strategy_name_glfw(robustness));
}
}
printf("%s context renderer string: \"%s\"\n",
get_api_name(client),
glGetString(GL_RENDERER));
printf("%s context vendor string: \"%s\"\n",
get_api_name(client),
glGetString(GL_VENDOR));
if (major >= 2)
{
printf("%s context shading language version: \"%s\"\n",
get_api_name(client),
glGetString(GL_SHADING_LANGUAGE_VERSION));
}
printf("%s framebuffer:\n", get_api_name(client));
if (client == GLFW_OPENGL_API && profile == GLFW_OPENGL_CORE_PROFILE)
{
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
GL_BACK_LEFT,
GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE,
&redbits);
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
GL_BACK_LEFT,
GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE,
&greenbits);
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
GL_BACK_LEFT,
GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE,
&bluebits);
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
GL_BACK_LEFT,
GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE,
&alphabits);
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
GL_DEPTH,
GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE,
&depthbits);
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,
GL_STENCIL,
GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE,
&stencilbits);
}
else
{
glGetIntegerv(GL_RED_BITS, &redbits);
glGetIntegerv(GL_GREEN_BITS, &greenbits);
glGetIntegerv(GL_BLUE_BITS, &bluebits);
glGetIntegerv(GL_ALPHA_BITS, &alphabits);
glGetIntegerv(GL_DEPTH_BITS, &depthbits);
glGetIntegerv(GL_STENCIL_BITS, &stencilbits);
}
printf(" red: %u green: %u blue: %u alpha: %u depth: %u stencil: %u\n",
redbits, greenbits, bluebits, alphabits, depthbits, stencilbits);
if (client == GLFW_OPENGL_ES_API ||
GLAD_GL_ARB_multisample ||
major > 1 || minor >= 3)
{
GLint samples, samplebuffers;
glGetIntegerv(GL_SAMPLES, &samples);
glGetIntegerv(GL_SAMPLE_BUFFERS, &samplebuffers);
printf(" samples: %u sample buffers: %u\n", samples, samplebuffers);
}
if (client == GLFW_OPENGL_API && profile != GLFW_OPENGL_CORE_PROFILE)
{
GLint accumredbits, accumgreenbits, accumbluebits, accumalphabits;
GLint auxbuffers;
glGetIntegerv(GL_ACCUM_RED_BITS, &accumredbits);
glGetIntegerv(GL_ACCUM_GREEN_BITS, &accumgreenbits);
glGetIntegerv(GL_ACCUM_BLUE_BITS, &accumbluebits);
glGetIntegerv(GL_ACCUM_ALPHA_BITS, &accumalphabits);
glGetIntegerv(GL_AUX_BUFFERS, &auxbuffers);
printf(" accum red: %u accum green: %u accum blue: %u accum alpha: %u aux buffers: %u\n",
accumredbits, accumgreenbits, accumbluebits, accumalphabits, auxbuffers);
}
if (list_extensions)
list_context_extensions(client, major, minor);
printf("Vulkan loader: %s\n",
glfwVulkanSupported() ? "available" : "missing");
if (glfwVulkanSupported())
{
uint32_t loader_version = VK_API_VERSION_1_0;
uint32_t i, re_count, pd_count;
const char** re;
VkApplicationInfo ai = {0};
VkInstanceCreateInfo ici = {0};
VkInstance instance;
VkPhysicalDevice* pd;
gladLoadVulkanUserPtr(NULL, glad_vulkan_callback, NULL);
if (vkEnumerateInstanceVersion)
{
uint32_t version;
if (vkEnumerateInstanceVersion(&version) == VK_SUCCESS)
loader_version = version;
}
printf("Vulkan loader API version: %i.%i\n",
VK_VERSION_MAJOR(loader_version),
VK_VERSION_MINOR(loader_version));
re = glfwGetRequiredInstanceExtensions(&re_count);
printf("Vulkan required instance extensions:");
if (re)
{
for (i = 0; i < re_count; i++)
printf(" %s", re[i]);
putchar('\n');
}
else
printf(" missing\n");
if (list_extensions)
list_vulkan_instance_extensions();
if (list_layers)
list_vulkan_instance_layers();
ai.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
ai.pApplicationName = "glfwinfo";
ai.applicationVersion = VK_MAKE_VERSION(GLFW_VERSION_MAJOR,
GLFW_VERSION_MINOR,
GLFW_VERSION_REVISION);
if (loader_version >= VK_API_VERSION_1_1)
ai.apiVersion = VK_API_VERSION_1_1;
else
ai.apiVersion = VK_API_VERSION_1_0;
ici.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
ici.pApplicationInfo = &ai;
ici.enabledExtensionCount = re_count;
ici.ppEnabledExtensionNames = re;
if (vkCreateInstance(&ici, NULL, &instance) != VK_SUCCESS)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
gladLoadVulkanUserPtr(NULL, glad_vulkan_callback, instance);
if (vkEnumeratePhysicalDevices(instance, &pd_count, NULL) != VK_SUCCESS)
{
vkDestroyInstance(instance, NULL);
glfwTerminate();
exit(EXIT_FAILURE);
}
pd = calloc(pd_count, sizeof(VkPhysicalDevice));
if (vkEnumeratePhysicalDevices(instance, &pd_count, pd) != VK_SUCCESS)
{
free(pd);
vkDestroyInstance(instance, NULL);
glfwTerminate();
exit(EXIT_FAILURE);
}
for (i = 0; i < pd_count; i++)
{
VkPhysicalDeviceProperties pdp;
vkGetPhysicalDeviceProperties(pd[i], &pdp);
printf("Vulkan %s device: \"%s\" API version %i.%i\n",
get_device_type_name(pdp.deviceType),
pdp.deviceName,
VK_VERSION_MAJOR(pdp.apiVersion),
VK_VERSION_MINOR(pdp.apiVersion));
if (list_extensions)
list_vulkan_device_extensions(instance, pd[i]);
if (list_layers)
list_vulkan_device_layers(instance, pd[i]);
}
free(pd);
vkDestroyInstance(instance, NULL);
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Window icon test program
// 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 program is used to test the icon feature.
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// a simple glfw logo
const char* const logo[] =
{
"................",
"................",
"...0000..0......",
"...0.....0......",
"...0.00..0......",
"...0..0..0......",
"...0000..0000...",
"................",
"................",
"...000..0...0...",
"...0....0...0...",
"...000..0.0.0...",
"...0....0.0.0...",
"...0....00000...",
"................",
"................"
};
const unsigned char icon_colors[5][4] =
{
{ 0, 0, 0, 255 }, // black
{ 255, 0, 0, 255 }, // red
{ 0, 255, 0, 255 }, // green
{ 0, 0, 255, 255 }, // blue
{ 255, 255, 255, 255 } // white
};
static int cur_icon_color = 0;
static void set_icon(GLFWwindow* window, int icon_color)
{
int x, y;
unsigned char pixels[16 * 16 * 4];
unsigned char* target = pixels;
GLFWimage img = { 16, 16, pixels };
for (y = 0; y < img.width; y++)
{
for (x = 0; x < img.height; x++)
{
if (logo[y][x] == '0')
memcpy(target, icon_colors[icon_color], 4);
else
memset(target, 0, 4);
target += 4;
}
}
glfwSetWindowIcon(window, 1, &img);
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
case GLFW_KEY_SPACE:
cur_icon_color = (cur_icon_color + 1) % 5;
set_icon(window, cur_icon_color);
break;
case GLFW_KEY_X:
glfwSetWindowIcon(window, 0, NULL);
break;
}
}
int main(int argc, char** argv)
{
GLFWwindow* window;
if (!glfwInit())
{
fprintf(stderr, "Failed to initialize GLFW\n");
exit(EXIT_FAILURE);
}
window = glfwCreateWindow(200, 200, "Window Icon", NULL, NULL);
if (!window)
{
glfwTerminate();
fprintf(stderr, "Failed to open GLFW window\n");
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSetKeyCallback(window, key_callback);
set_icon(window, cur_icon_color);
while (!glfwWindowShouldClose(window))
{
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwWaitEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Iconify/restore test program
// 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 program is used to test the iconify/restore functionality for
// both full screen and windowed mode windows
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include "getopt.h"
static int windowed_xpos, windowed_ypos, windowed_width, windowed_height;
static void usage(void)
{
printf("Usage: iconify [-h] [-f [-a] [-n]]\n");
printf("Options:\n");
printf(" -a create windows for all monitors\n");
printf(" -f create full screen window(s)\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)
{
printf("%0.2f Key %s\n",
glfwGetTime(),
action == GLFW_PRESS ? "pressed" : "released");
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_I:
glfwIconifyWindow(window);
break;
case GLFW_KEY_M:
glfwMaximizeWindow(window);
break;
case GLFW_KEY_R:
glfwRestoreWindow(window);
break;
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
case GLFW_KEY_A:
glfwSetWindowAttrib(window, GLFW_AUTO_ICONIFY, !glfwGetWindowAttrib(window, GLFW_AUTO_ICONIFY));
break;
case GLFW_KEY_B:
glfwSetWindowAttrib(window, GLFW_RESIZABLE, !glfwGetWindowAttrib(window, GLFW_RESIZABLE));
break;
case GLFW_KEY_D:
glfwSetWindowAttrib(window, GLFW_DECORATED, !glfwGetWindowAttrib(window, GLFW_DECORATED));
break;
case GLFW_KEY_F:
glfwSetWindowAttrib(window, GLFW_FLOATING, !glfwGetWindowAttrib(window, GLFW_FLOATING));
break;
case GLFW_KEY_F11:
case GLFW_KEY_ENTER:
{
if (mods != GLFW_MOD_ALT)
return;
if (glfwGetWindowMonitor(window))
{
glfwSetWindowMonitor(window, NULL,
windowed_xpos, windowed_ypos,
windowed_width, windowed_height,
0);
}
else
{
GLFWmonitor* monitor = glfwGetPrimaryMonitor();
if (monitor)
{
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwGetWindowPos(window, &windowed_xpos, &windowed_ypos);
glfwGetWindowSize(window, &windowed_width, &windowed_height);
glfwSetWindowMonitor(window, monitor,
0, 0, mode->width, mode->height,
mode->refreshRate);
}
}
break;
}
}
}
static void window_size_callback(GLFWwindow* window, int width, int height)
{
printf("%0.2f Window resized to %ix%i\n", glfwGetTime(), width, height);
}
static void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
printf("%0.2f Framebuffer resized to %ix%i\n", glfwGetTime(), width, height);
}
static void window_focus_callback(GLFWwindow* window, int focused)
{
printf("%0.2f Window %s\n",
glfwGetTime(),
focused ? "focused" : "defocused");
}
static void window_iconify_callback(GLFWwindow* window, int iconified)
{
printf("%0.2f Window %s\n",
glfwGetTime(),
iconified ? "iconified" : "uniconified");
}
static void window_maximize_callback(GLFWwindow* window, int maximized)
{
printf("%0.2f Window %s\n",
glfwGetTime(),
maximized ? "maximized" : "unmaximized");
}
static void window_refresh_callback(GLFWwindow* window)
{
printf("%0.2f Window refresh\n", glfwGetTime());
glfwMakeContextCurrent(window);
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
}
static GLFWwindow* create_window(GLFWmonitor* monitor)
{
int width, height;
GLFWwindow* window;
if (monitor)
{
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwWindowHint(GLFW_REFRESH_RATE, mode->refreshRate);
glfwWindowHint(GLFW_RED_BITS, mode->redBits);
glfwWindowHint(GLFW_GREEN_BITS, mode->greenBits);
glfwWindowHint(GLFW_BLUE_BITS, mode->blueBits);
width = mode->width;
height = mode->height;
}
else
{
width = 640;
height = 480;
}
window = glfwCreateWindow(width, height, "Iconify", monitor, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
return window;
}
int main(int argc, char** argv)
{
int ch, i, window_count;
int fullscreen = GLFW_FALSE, all_monitors = GLFW_FALSE;
GLFWwindow** windows;
while ((ch = getopt(argc, argv, "afhn")) != -1)
{
switch (ch)
{
case 'a':
all_monitors = GLFW_TRUE;
break;
case 'h':
usage();
exit(EXIT_SUCCESS);
case 'f':
fullscreen = GLFW_TRUE;
break;
default:
usage();
exit(EXIT_FAILURE);
}
}
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
if (fullscreen && all_monitors)
{
int monitor_count;
GLFWmonitor** monitors = glfwGetMonitors(&monitor_count);
window_count = monitor_count;
windows = calloc(window_count, sizeof(GLFWwindow*));
for (i = 0; i < monitor_count; i++)
{
windows[i] = create_window(monitors[i]);
if (!windows[i])
break;
}
}
else
{
GLFWmonitor* monitor = NULL;
if (fullscreen)
monitor = glfwGetPrimaryMonitor();
window_count = 1;
windows = calloc(window_count, sizeof(GLFWwindow*));
windows[0] = create_window(monitor);
}
for (i = 0; i < window_count; i++)
{
glfwSetKeyCallback(windows[i], key_callback);
glfwSetFramebufferSizeCallback(windows[i], framebuffer_size_callback);
glfwSetWindowSizeCallback(windows[i], window_size_callback);
glfwSetWindowFocusCallback(windows[i], window_focus_callback);
glfwSetWindowIconifyCallback(windows[i], window_iconify_callback);
glfwSetWindowMaximizeCallback(windows[i], window_maximize_callback);
glfwSetWindowRefreshCallback(windows[i], window_refresh_callback);
window_refresh_callback(windows[i]);
printf("Window is %s and %s\n",
glfwGetWindowAttrib(windows[i], GLFW_ICONIFIED) ? "iconified" : "restored",
glfwGetWindowAttrib(windows[i], GLFW_FOCUSED) ? "focused" : "defocused");
}
for (;;)
{
glfwWaitEvents();
for (i = 0; i < window_count; i++)
{
if (glfwWindowShouldClose(windows[i]))
break;
}
if (i < window_count)
break;
// Workaround for an issue with msvcrt and mintty
fflush(stdout);
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Input lag 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 renders a marker at the cursor position reported by GLFW to
// check how much it lags behind the hardware mouse cursor
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#define NK_IMPLEMENTATION
#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_STANDARD_VARARGS
#include <nuklear.h>
#define NK_GLFW_GL2_IMPLEMENTATION
#include <nuklear_glfw_gl2.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "getopt.h"
void usage(void)
{
printf("Usage: inputlag [-h] [-f]\n");
printf("Options:\n");
printf(" -f create full screen window\n");
printf(" -h show this help\n");
}
struct nk_vec2 cursor_new, cursor_pos, cursor_vel;
enum { cursor_sync_query, cursor_input_message } cursor_method = cursor_sync_query;
void sample_input(GLFWwindow* window)
{
float a = .25; // exponential smoothing factor
if (cursor_method == cursor_sync_query) {
double x, y;
glfwGetCursorPos(window, &x, &y);
cursor_new.x = (float) x;
cursor_new.y = (float) y;
}
cursor_vel.x = (cursor_new.x - cursor_pos.x) * a + cursor_vel.x * (1 - a);
cursor_vel.y = (cursor_new.y - cursor_pos.y) * a + cursor_vel.y * (1 - a);
cursor_pos = cursor_new;
}
void cursor_pos_callback(GLFWwindow* window, double xpos, double ypos)
{
cursor_new.x = (float) xpos;
cursor_new.y = (float) ypos;
}
int enable_vsync = nk_true;
void update_vsync()
{
glfwSwapInterval(enable_vsync == nk_true ? 1 : 0);
}
int swap_clear = nk_false;
int swap_finish = nk_true;
int swap_occlusion_query = nk_false;
int swap_read_pixels = nk_false;
GLuint occlusion_query;
void swap_buffers(GLFWwindow* window)
{
glfwSwapBuffers(window);
if (swap_clear)
glClear(GL_COLOR_BUFFER_BIT);
if (swap_finish)
glFinish();
if (swap_occlusion_query) {
GLint occlusion_result;
if (!occlusion_query)
glGenQueries(1, &occlusion_query);
glBeginQuery(GL_SAMPLES_PASSED, occlusion_query);
glBegin(GL_POINTS);
glVertex2f(0, 0);
glEnd();
glEndQuery(GL_SAMPLES_PASSED);
glGetQueryObjectiv(occlusion_query, GL_QUERY_RESULT, &occlusion_result);
}
if (swap_read_pixels) {
unsigned char rgba[4];
glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, rgba);
}
}
void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, 1);
break;
}
}
void draw_marker(struct nk_command_buffer* canvas, int lead, struct nk_vec2 pos)
{
struct nk_color colors[4] = { nk_rgb(255,0,0), nk_rgb(255,255,0), nk_rgb(0,255,0), nk_rgb(0,96,255) };
struct nk_rect rect = { -5 + pos.x, -5 + pos.y, 10, 10 };
nk_fill_circle(canvas, rect, colors[lead]);
}
int main(int argc, char** argv)
{
int ch, width, height;
unsigned long frame_count = 0;
double last_time, current_time;
double frame_rate = 0;
int fullscreen = GLFW_FALSE;
GLFWmonitor* monitor = NULL;
GLFWwindow* window;
struct nk_context* nk;
struct nk_font_atlas* atlas;
int show_forecasts = nk_true;
while ((ch = getopt(argc, argv, "fh")) != -1)
{
switch (ch)
{
case 'h':
usage();
exit(EXIT_SUCCESS);
case 'f':
fullscreen = GLFW_TRUE;
break;
}
}
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
if (fullscreen)
{
const GLFWvidmode* mode;
monitor = glfwGetPrimaryMonitor();
mode = glfwGetVideoMode(monitor);
width = mode->width;
height = mode->height;
}
else
{
width = 640;
height = 480;
}
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
window = glfwCreateWindow(width, height, "Input lag test", monitor, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
update_vsync();
last_time = glfwGetTime();
nk = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS);
nk_glfw3_font_stash_begin(&atlas);
nk_glfw3_font_stash_end();
glfwSetKeyCallback(window, key_callback);
glfwSetCursorPosCallback(window, cursor_pos_callback);
while (!glfwWindowShouldClose(window))
{
int width, height;
struct nk_rect area;
glfwPollEvents();
sample_input(window);
glfwGetWindowSize(window, &width, &height);
area = nk_rect(0.f, 0.f, (float) width, (float) height);
glClear(GL_COLOR_BUFFER_BIT);
nk_glfw3_new_frame();
if (nk_begin(nk, "", area, 0))
{
nk_flags align_left = NK_TEXT_ALIGN_LEFT | NK_TEXT_ALIGN_MIDDLE;
struct nk_command_buffer *canvas = nk_window_get_canvas(nk);
int lead;
for (lead = show_forecasts ? 3 : 0; lead >= 0; lead--)
draw_marker(canvas, lead, nk_vec2(cursor_pos.x + cursor_vel.x * lead,
cursor_pos.y + cursor_vel.y * lead));
// print instructions
nk_layout_row_dynamic(nk, 20, 1);
nk_label(nk, "Move mouse uniformly and check marker under cursor:", align_left);
for (lead = 0; lead <= 3; lead++) {
nk_layout_row_begin(nk, NK_STATIC, 12, 2);
nk_layout_row_push(nk, 25);
draw_marker(canvas, lead, nk_layout_space_to_screen(nk, nk_vec2(20, 5)));
nk_label(nk, "", 0);
nk_layout_row_push(nk, 500);
if (lead == 0)
nk_label(nk, "- current cursor position (no input lag)", align_left);
else
nk_labelf(nk, align_left, "- %d-frame forecast (input lag is %d frame)", lead, lead);
nk_layout_row_end(nk);
}
nk_layout_row_dynamic(nk, 20, 1);
nk_checkbox_label(nk, "Show forecasts", &show_forecasts);
nk_label(nk, "Input method:", align_left);
if (nk_option_label(nk, "glfwGetCursorPos (sync query)", cursor_method == cursor_sync_query))
cursor_method = cursor_sync_query;
if (nk_option_label(nk, "glfwSetCursorPosCallback (latest input message)", cursor_method == cursor_input_message))
cursor_method = cursor_input_message;
nk_label(nk, "", 0); // separator
nk_value_float(nk, "FPS", (float) frame_rate);
if (nk_checkbox_label(nk, "Enable vsync", &enable_vsync))
update_vsync();
nk_label(nk, "", 0); // separator
nk_label(nk, "After swap:", align_left);
nk_checkbox_label(nk, "glClear", &swap_clear);
nk_checkbox_label(nk, "glFinish", &swap_finish);
nk_checkbox_label(nk, "draw with occlusion query", &swap_occlusion_query);
nk_checkbox_label(nk, "glReadPixels", &swap_read_pixels);
}
nk_end(nk);
nk_glfw3_render(NK_ANTI_ALIASING_ON);
swap_buffers(window);
frame_count++;
current_time = glfwGetTime();
if (current_time - last_time > 1.0)
{
frame_rate = frame_count / (current_time - last_time);
frame_count = 0;
last_time = current_time;
}
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Joystick input 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 displays the state of every button and axis of every connected
// joystick and/or gamepad
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#define NK_IMPLEMENTATION
#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_STANDARD_VARARGS
#define NK_BUTTON_TRIGGER_ON_RELEASE
#include <nuklear.h>
#define NK_GLFW_GL2_IMPLEMENTATION
#include <nuklear_glfw_gl2.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifdef _MSC_VER
#define strdup(x) _strdup(x)
#endif
static GLFWwindow* window;
static int joysticks[GLFW_JOYSTICK_LAST + 1];
static int joystick_count = 0;
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static void joystick_callback(int jid, int event)
{
if (event == GLFW_CONNECTED)
joysticks[joystick_count++] = jid;
else if (event == GLFW_DISCONNECTED)
{
int i;
for (i = 0; i < joystick_count; i++)
{
if (joysticks[i] == jid)
break;
}
for (i = i + 1; i < joystick_count; i++)
joysticks[i - 1] = joysticks[i];
joystick_count--;
}
if (!glfwGetWindowAttrib(window, GLFW_FOCUSED))
glfwRequestWindowAttention(window);
}
static void drop_callback(GLFWwindow* window, int count, const char* paths[])
{
int i;
for (i = 0; i < count; i++)
{
long size;
char* text;
FILE* stream = fopen(paths[i], "rb");
if (!stream)
continue;
fseek(stream, 0, SEEK_END);
size = ftell(stream);
fseek(stream, 0, SEEK_SET);
text = malloc(size + 1);
text[size] = '\0';
if (fread(text, 1, size, stream) == size)
glfwUpdateGamepadMappings(text);
free(text);
fclose(stream);
}
}
static const char* joystick_label(int jid)
{
static char label[1024];
snprintf(label, sizeof(label), "%i: %s", jid + 1, glfwGetJoystickName(jid));
return label;
}
static void hat_widget(struct nk_context* nk, unsigned char state)
{
float radius;
struct nk_rect area;
struct nk_vec2 center;
if (nk_widget(&area, nk) == NK_WIDGET_INVALID)
return;
center = nk_vec2(area.x + area.w / 2.f, area.y + area.h / 2.f);
radius = NK_MIN(area.w, area.h) / 2.f;
nk_stroke_circle(nk_window_get_canvas(nk),
nk_rect(center.x - radius,
center.y - radius,
radius * 2.f,
radius * 2.f),
1.f,
nk_rgb(175, 175, 175));
if (state)
{
const float angles[] =
{
0.f, 0.f,
NK_PI * 1.5f, NK_PI * 1.75f,
NK_PI, 0.f,
NK_PI * 1.25f, 0.f,
NK_PI * 0.5f, NK_PI * 0.25f,
0.f, 0.f,
NK_PI * 0.75f, 0.f,
};
const float cosa = nk_cos(angles[state]);
const float sina = nk_sin(angles[state]);
const struct nk_vec2 p0 = nk_vec2(0.f, -radius);
const struct nk_vec2 p1 = nk_vec2( radius / 2.f, -radius / 3.f);
const struct nk_vec2 p2 = nk_vec2(-radius / 2.f, -radius / 3.f);
nk_fill_triangle(nk_window_get_canvas(nk),
center.x + cosa * p0.x + sina * p0.y,
center.y + cosa * p0.y - sina * p0.x,
center.x + cosa * p1.x + sina * p1.y,
center.y + cosa * p1.y - sina * p1.x,
center.x + cosa * p2.x + sina * p2.y,
center.y + cosa * p2.y - sina * p2.x,
nk_rgb(175, 175, 175));
}
}
int main(void)
{
int jid, hat_buttons = GLFW_FALSE;
struct nk_context* nk;
struct nk_font_atlas* atlas;
memset(joysticks, 0, sizeof(joysticks));
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
window = glfwCreateWindow(800, 600, "Joystick Test", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
nk = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS);
nk_glfw3_font_stash_begin(&atlas);
nk_glfw3_font_stash_end();
for (jid = GLFW_JOYSTICK_1; jid <= GLFW_JOYSTICK_LAST; jid++)
{
if (glfwJoystickPresent(jid))
joysticks[joystick_count++] = jid;
}
glfwSetJoystickCallback(joystick_callback);
glfwSetDropCallback(window, drop_callback);
while (!glfwWindowShouldClose(window))
{
int i, width, height;
glfwGetWindowSize(window, &width, &height);
glClear(GL_COLOR_BUFFER_BIT);
nk_glfw3_new_frame();
if (nk_begin(nk,
"Joysticks",
nk_rect(width - 200.f, 0.f, 200.f, (float) height),
NK_WINDOW_MINIMIZABLE |
NK_WINDOW_TITLE))
{
nk_layout_row_dynamic(nk, 30, 1);
nk_checkbox_label(nk, "Hat buttons", &hat_buttons);
if (joystick_count)
{
for (i = 0; i < joystick_count; i++)
{
if (nk_button_label(nk, joystick_label(joysticks[i])))
nk_window_set_focus(nk, joystick_label(joysticks[i]));
}
}
else
nk_label(nk, "No joysticks connected", NK_TEXT_LEFT);
}
nk_end(nk);
for (i = 0; i < joystick_count; i++)
{
if (nk_begin(nk,
joystick_label(joysticks[i]),
nk_rect(i * 20.f, i * 20.f, 550.f, 570.f),
NK_WINDOW_BORDER |
NK_WINDOW_MOVABLE |
NK_WINDOW_SCALABLE |
NK_WINDOW_MINIMIZABLE |
NK_WINDOW_TITLE))
{
int j, axis_count, button_count, hat_count;
const float* axes;
const unsigned char* buttons;
const unsigned char* hats;
GLFWgamepadstate state;
nk_layout_row_dynamic(nk, 30, 1);
nk_labelf(nk, NK_TEXT_LEFT, "Hardware GUID %s",
glfwGetJoystickGUID(joysticks[i]));
nk_label(nk, "Joystick state", NK_TEXT_LEFT);
axes = glfwGetJoystickAxes(joysticks[i], &axis_count);
buttons = glfwGetJoystickButtons(joysticks[i], &button_count);
hats = glfwGetJoystickHats(joysticks[i], &hat_count);
if (!hat_buttons)
button_count -= hat_count * 4;
for (j = 0; j < axis_count; j++)
nk_slide_float(nk, -1.f, axes[j], 1.f, 0.1f);
nk_layout_row_dynamic(nk, 30, 12);
for (j = 0; j < button_count; j++)
{
char name[16];
snprintf(name, sizeof(name), "%i", j + 1);
nk_select_label(nk, name, NK_TEXT_CENTERED, buttons[j]);
}
nk_layout_row_dynamic(nk, 30, 8);
for (j = 0; j < hat_count; j++)
hat_widget(nk, hats[j]);
nk_layout_row_dynamic(nk, 30, 1);
if (glfwGetGamepadState(joysticks[i], &state))
{
int hat = 0;
const char* names[GLFW_GAMEPAD_BUTTON_LAST + 1 - 4] =
{
"A", "B", "X", "Y",
"LB", "RB",
"Back", "Start", "Guide",
"LT", "RT",
};
nk_labelf(nk, NK_TEXT_LEFT,
"Gamepad state: %s",
glfwGetGamepadName(joysticks[i]));
nk_layout_row_dynamic(nk, 30, 2);
for (j = 0; j <= GLFW_GAMEPAD_AXIS_LAST; j++)
nk_slide_float(nk, -1.f, state.axes[j], 1.f, 0.1f);
nk_layout_row_dynamic(nk, 30, GLFW_GAMEPAD_BUTTON_LAST + 1 - 4);
for (j = 0; j <= GLFW_GAMEPAD_BUTTON_LAST - 4; j++)
nk_select_label(nk, names[j], NK_TEXT_CENTERED, state.buttons[j]);
if (state.buttons[GLFW_GAMEPAD_BUTTON_DPAD_UP])
hat |= GLFW_HAT_UP;
if (state.buttons[GLFW_GAMEPAD_BUTTON_DPAD_RIGHT])
hat |= GLFW_HAT_RIGHT;
if (state.buttons[GLFW_GAMEPAD_BUTTON_DPAD_DOWN])
hat |= GLFW_HAT_DOWN;
if (state.buttons[GLFW_GAMEPAD_BUTTON_DPAD_LEFT])
hat |= GLFW_HAT_LEFT;
nk_layout_row_dynamic(nk, 30, 8);
hat_widget(nk, hat);
}
else
nk_label(nk, "Joystick has no gamepad mapping", NK_TEXT_LEFT);
}
nk_end(nk);
}
nk_glfw3_render(NK_ANTI_ALIASING_ON);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Monitor information tool
// 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 prints monitor and video mode information or verifies video
// modes
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "getopt.h"
enum Mode
{
LIST_MODE,
TEST_MODE
};
static void usage(void)
{
printf("Usage: monitors [-t]\n");
printf(" monitors -h\n");
}
static int euclid(int a, int b)
{
return b ? euclid(b, a % b) : a;
}
static const char* format_mode(const GLFWvidmode* mode)
{
static char buffer[512];
const int gcd = euclid(mode->width, mode->height);
snprintf(buffer,
sizeof(buffer),
"%i x %i x %i (%i:%i) (%i %i %i) %i Hz",
mode->width, mode->height,
mode->redBits + mode->greenBits + mode->blueBits,
mode->width / gcd, mode->height / gcd,
mode->redBits, mode->greenBits, mode->blueBits,
mode->refreshRate);
buffer[sizeof(buffer) - 1] = '\0';
return buffer;
}
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
printf("Framebuffer resized to %ix%i\n", width, height);
glViewport(0, 0, width, height);
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (key == GLFW_KEY_ESCAPE)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
static void list_modes(GLFWmonitor* monitor)
{
int count, x, y, width_mm, height_mm, i;
int workarea_x, workarea_y, workarea_width, workarea_height;
float xscale, yscale;
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
const GLFWvidmode* modes = glfwGetVideoModes(monitor, &count);
glfwGetMonitorPos(monitor, &x, &y);
glfwGetMonitorPhysicalSize(monitor, &width_mm, &height_mm);
glfwGetMonitorContentScale(monitor, &xscale, &yscale);
glfwGetMonitorWorkarea(monitor, &workarea_x, &workarea_y, &workarea_width, &workarea_height);
printf("Name: %s (%s)\n",
glfwGetMonitorName(monitor),
glfwGetPrimaryMonitor() == monitor ? "primary" : "secondary");
printf("Current mode: %s\n", format_mode(mode));
printf("Virtual position: %i, %i\n", x, y);
printf("Content scale: %f x %f\n", xscale, yscale);
printf("Physical size: %i x %i mm (%0.2f dpi at %i x %i)\n",
width_mm, height_mm, mode->width * 25.4f / width_mm, mode->width, mode->height);
printf("Monitor work area: %i x %i starting at %i, %i\n",
workarea_width, workarea_height, workarea_x, workarea_y);
printf("Modes:\n");
for (i = 0; i < count; i++)
{
printf("%3u: %s", (unsigned int) i, format_mode(modes + i));
if (memcmp(mode, modes + i, sizeof(GLFWvidmode)) == 0)
printf(" (current mode)");
putchar('\n');
}
}
static void test_modes(GLFWmonitor* monitor)
{
int i, count;
GLFWwindow* window;
const GLFWvidmode* modes = glfwGetVideoModes(monitor, &count);
for (i = 0; i < count; i++)
{
const GLFWvidmode* mode = modes + i;
GLFWvidmode current;
glfwWindowHint(GLFW_RED_BITS, mode->redBits);
glfwWindowHint(GLFW_GREEN_BITS, mode->greenBits);
glfwWindowHint(GLFW_BLUE_BITS, mode->blueBits);
glfwWindowHint(GLFW_REFRESH_RATE, mode->refreshRate);
printf("Testing mode %u on monitor %s: %s\n",
(unsigned int) i,
glfwGetMonitorName(monitor),
format_mode(mode));
window = glfwCreateWindow(mode->width, mode->height,
"Video Mode Test",
glfwGetPrimaryMonitor(),
NULL);
if (!window)
{
printf("Failed to enter mode %u: %s\n",
(unsigned int) i,
format_mode(mode));
continue;
}
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
glfwSetTime(0.0);
while (glfwGetTime() < 5.0)
{
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwPollEvents();
if (glfwWindowShouldClose(window))
{
printf("User terminated program\n");
glfwTerminate();
exit(EXIT_SUCCESS);
}
}
glGetIntegerv(GL_RED_BITS, &current.redBits);
glGetIntegerv(GL_GREEN_BITS, &current.greenBits);
glGetIntegerv(GL_BLUE_BITS, &current.blueBits);
glfwGetWindowSize(window, &current.width, &current.height);
if (current.redBits != mode->redBits ||
current.greenBits != mode->greenBits ||
current.blueBits != mode->blueBits)
{
printf("*** Color bit mismatch: (%i %i %i) instead of (%i %i %i)\n",
current.redBits, current.greenBits, current.blueBits,
mode->redBits, mode->greenBits, mode->blueBits);
}
if (current.width != mode->width || current.height != mode->height)
{
printf("*** Size mismatch: %ix%i instead of %ix%i\n",
current.width, current.height,
mode->width, mode->height);
}
printf("Closing window\n");
glfwDestroyWindow(window);
window = NULL;
glfwPollEvents();
}
}
int main(int argc, char** argv)
{
int ch, i, count, mode = LIST_MODE;
GLFWmonitor** monitors;
while ((ch = getopt(argc, argv, "th")) != -1)
{
switch (ch)
{
case 'h':
usage();
exit(EXIT_SUCCESS);
case 't':
mode = TEST_MODE;
break;
default:
usage();
exit(EXIT_FAILURE);
}
}
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
monitors = glfwGetMonitors(&count);
for (i = 0; i < count; i++)
{
if (mode == LIST_MODE)
list_modes(monitors[i]);
else if (mode == TEST_MODE)
test_modes(monitors[i]);
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Multisample anti-aliasing 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 renders two high contrast, slowly rotating quads, one aliased
// and one (hopefully) anti-aliased, thus allowing for visual verification
// of whether MSAA is indeed enabled
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#if defined(_MSC_VER)
// Make MS math.h define M_PI
#define _USE_MATH_DEFINES
#endif
#include "linmath.h"
#include <stdio.h>
#include <stdlib.h>
#include "getopt.h"
static const vec2 vertices[4] =
{
{ -0.6f, -0.6f },
{ 0.6f, -0.6f },
{ 0.6f, 0.6f },
{ -0.6f, 0.6f }
};
static const char* vertex_shader_text =
"#version 110\n"
"uniform mat4 MVP;\n"
"attribute vec2 vPos;\n"
"void main()\n"
"{\n"
" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
"}\n";
static const char* fragment_shader_text =
"#version 110\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\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:
glfwSetTime(0.0);
break;
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
}
}
static void usage(void)
{
printf("Usage: msaa [-h] [-s SAMPLES]\n");
}
int main(int argc, char** argv)
{
int ch, samples = 4;
GLFWwindow* window;
GLuint vertex_buffer, vertex_shader, fragment_shader, program;
GLint mvp_location, vpos_location;
while ((ch = getopt(argc, argv, "hs:")) != -1)
{
switch (ch)
{
case 'h':
usage();
exit(EXIT_SUCCESS);
case 's':
samples = atoi(optarg);
break;
default:
usage();
exit(EXIT_FAILURE);
}
}
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
if (samples)
printf("Requesting MSAA with %i samples\n", samples);
else
printf("Requesting that MSAA not be available\n");
glfwWindowHint(GLFW_SAMPLES, samples);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
window = glfwCreateWindow(800, 400, "Aliasing Detector", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
glGetIntegerv(GL_SAMPLES, &samples);
if (samples)
printf("Context reports MSAA is available with %i samples\n", samples);
else
printf("Context reports MSAA is unavailable\n");
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
glCompileShader(vertex_shader);
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
glCompileShader(fragment_shader);
program = glCreateProgram();
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
mvp_location = glGetUniformLocation(program, "MVP");
vpos_location = glGetAttribLocation(program, "vPos");
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) 0);
while (!glfwWindowShouldClose(window))
{
float ratio;
int width, height;
mat4x4 m, p, mvp;
const double angle = glfwGetTime() * M_PI / 180.0;
glfwGetFramebufferSize(window, &width, &height);
ratio = width / (float) height;
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(program);
mat4x4_ortho(p, -ratio, ratio, -1.f, 1.f, 0.f, 1.f);
mat4x4_translate(m, -1.f, 0.f, 0.f);
mat4x4_rotate_Z(m, m, (float) angle);
mat4x4_mul(mvp, p, m);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glDisable(GL_MULTISAMPLE);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
mat4x4_translate(m, 1.f, 0.f, 0.f);
mat4x4_rotate_Z(m, m, (float) angle);
mat4x4_mul(mvp, p, m);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glEnable(GL_MULTISAMPLE);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Window opacity test program
// 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.
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#define NK_IMPLEMENTATION
#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_STANDARD_VARARGS
#include <nuklear.h>
#define NK_GLFW_GL2_IMPLEMENTATION
#include <nuklear_glfw_gl2.h>
#include <stdio.h>
#include <stdlib.h>
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
int main(int argc, char** argv)
{
GLFWwindow* window;
struct nk_context* nk;
struct nk_font_atlas* atlas;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
window = glfwCreateWindow(400, 400, "Opacity", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
nk = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS);
nk_glfw3_font_stash_begin(&atlas);
nk_glfw3_font_stash_end();
while (!glfwWindowShouldClose(window))
{
int width, height;
struct nk_rect area;
glfwGetWindowSize(window, &width, &height);
area = nk_rect(0.f, 0.f, (float) width, (float) height);
glClear(GL_COLOR_BUFFER_BIT);
nk_glfw3_new_frame();
if (nk_begin(nk, "", area, 0))
{
float opacity = glfwGetWindowOpacity(window);
nk_layout_row_dynamic(nk, 30, 2);
if (nk_slider_float(nk, 0.f, &opacity, 1.f, 0.001f))
glfwSetWindowOpacity(window, opacity);
nk_labelf(nk, NK_TEXT_LEFT, "%0.3f", opacity);
}
nk_end(nk);
nk_glfw3_render(NK_ANTI_ALIASING_ON);
glfwSwapBuffers(window);
glfwWaitEventsTimeout(1.0);
}
nk_glfw3_shutdown();
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Window re-opener (open/close stress 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 came about as the result of bug #1262773
//
// It closes and re-opens the GLFW window every five seconds, alternating
// between windowed and full screen mode
//
// It also times and logs opening and closing actions and attempts to separate
// user initiated window closing from its own
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include "linmath.h"
static const char* vertex_shader_text =
"#version 110\n"
"uniform mat4 MVP;\n"
"attribute vec2 vPos;\n"
"void main()\n"
"{\n"
" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
"}\n";
static const char* fragment_shader_text =
"#version 110\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
static const vec2 vertices[4] =
{
{ -0.5f, -0.5f },
{ 0.5f, -0.5f },
{ 0.5f, 0.5f },
{ -0.5f, 0.5f }
};
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static void window_close_callback(GLFWwindow* window)
{
printf("Close callback triggered\n");
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_Q:
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
}
}
static void close_window(GLFWwindow* window)
{
double base = glfwGetTime();
glfwDestroyWindow(window);
printf("Closing window took %0.3f seconds\n", glfwGetTime() - base);
}
int main(int argc, char** argv)
{
int count = 0;
double base;
GLFWwindow* window;
srand((unsigned int) time(NULL));
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
for (;;)
{
int width, height;
GLFWmonitor* monitor = NULL;
GLuint vertex_shader, fragment_shader, program, vertex_buffer;
GLint mvp_location, vpos_location;
if (count & 1)
{
int monitorCount;
GLFWmonitor** monitors = glfwGetMonitors(&monitorCount);
monitor = monitors[rand() % monitorCount];
}
if (monitor)
{
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
width = mode->width;
height = mode->height;
}
else
{
width = 640;
height = 480;
}
base = glfwGetTime();
window = glfwCreateWindow(width, height, "Window Re-opener", monitor, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
if (monitor)
{
printf("Opening full screen window on monitor %s took %0.3f seconds\n",
glfwGetMonitorName(monitor),
glfwGetTime() - base);
}
else
{
printf("Opening regular window took %0.3f seconds\n",
glfwGetTime() - base);
}
glfwSetWindowCloseCallback(window, window_close_callback);
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
glCompileShader(vertex_shader);
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
glCompileShader(fragment_shader);
program = glCreateProgram();
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
mvp_location = glGetUniformLocation(program, "MVP");
vpos_location = glGetAttribLocation(program, "vPos");
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) 0);
glfwSetTime(0.0);
while (glfwGetTime() < 5.0)
{
float ratio;
int width, height;
mat4x4 m, p, mvp;
glfwGetFramebufferSize(window, &width, &height);
ratio = width / (float) height;
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT);
mat4x4_ortho(p, -ratio, ratio, -1.f, 1.f, 0.f, 1.f);
mat4x4_identity(m);
mat4x4_rotate_Z(m, m, (float) glfwGetTime());
mat4x4_mul(mvp, p, m);
glUseProgram(program);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glfwSwapBuffers(window);
glfwPollEvents();
if (glfwWindowShouldClose(window))
{
close_window(window);
printf("User closed window\n");
glfwTerminate();
exit(EXIT_SUCCESS);
}
}
printf("Closing window\n");
close_window(window);
count++;
}
glfwTerminate();
}

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//========================================================================
// Vsync enabling 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 renders a high contrast, horizontally moving bar, allowing for
// visual verification of whether the set swap interval is indeed obeyed
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "linmath.h"
static const struct
{
float x, y;
} vertices[4] =
{
{ -0.25f, -1.f },
{ 0.25f, -1.f },
{ 0.25f, 1.f },
{ -0.25f, 1.f }
};
static const char* vertex_shader_text =
"#version 110\n"
"uniform mat4 MVP;\n"
"attribute vec2 vPos;\n"
"void main()\n"
"{\n"
" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
"}\n";
static const char* fragment_shader_text =
"#version 110\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
static int swap_tear;
static int swap_interval;
static double frame_rate;
static void update_window_title(GLFWwindow* window)
{
char title[256];
snprintf(title, sizeof(title), "Tearing detector (interval %i%s, %0.1f Hz)",
swap_interval,
(swap_tear && swap_interval < 0) ? " (swap tear)" : "",
frame_rate);
glfwSetWindowTitle(window, title);
}
static void set_swap_interval(GLFWwindow* window, int interval)
{
swap_interval = interval;
glfwSwapInterval(swap_interval);
update_window_title(window);
}
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_UP:
{
if (swap_interval + 1 > swap_interval)
set_swap_interval(window, swap_interval + 1);
break;
}
case GLFW_KEY_DOWN:
{
if (swap_tear)
{
if (swap_interval - 1 < swap_interval)
set_swap_interval(window, swap_interval - 1);
}
else
{
if (swap_interval - 1 >= 0)
set_swap_interval(window, swap_interval - 1);
}
break;
}
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, 1);
break;
case GLFW_KEY_F11:
case GLFW_KEY_ENTER:
{
static int x, y, width, height;
if (mods != GLFW_MOD_ALT)
return;
if (glfwGetWindowMonitor(window))
glfwSetWindowMonitor(window, NULL, x, y, width, height, 0);
else
{
GLFWmonitor* monitor = glfwGetPrimaryMonitor();
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwGetWindowPos(window, &x, &y);
glfwGetWindowSize(window, &width, &height);
glfwSetWindowMonitor(window, monitor,
0, 0, mode->width, mode->height,
mode->refreshRate);
}
break;
}
}
}
int main(int argc, char** argv)
{
unsigned long frame_count = 0;
double last_time, current_time;
GLFWwindow* window;
GLuint vertex_buffer, vertex_shader, fragment_shader, program;
GLint mvp_location, vpos_location;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
window = glfwCreateWindow(640, 480, "Tearing detector", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
set_swap_interval(window, 0);
last_time = glfwGetTime();
frame_rate = 0.0;
swap_tear = (glfwExtensionSupported("WGL_EXT_swap_control_tear") ||
glfwExtensionSupported("GLX_EXT_swap_control_tear"));
glfwSetKeyCallback(window, key_callback);
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
glCompileShader(vertex_shader);
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
glCompileShader(fragment_shader);
program = glCreateProgram();
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
mvp_location = glGetUniformLocation(program, "MVP");
vpos_location = glGetAttribLocation(program, "vPos");
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) 0);
while (!glfwWindowShouldClose(window))
{
int width, height;
mat4x4 m, p, mvp;
float position = cosf((float) glfwGetTime() * 4.f) * 0.75f;
glfwGetFramebufferSize(window, &width, &height);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT);
mat4x4_ortho(p, -1.f, 1.f, -1.f, 1.f, 0.f, 1.f);
mat4x4_translate(m, position, 0.f, 0.f);
mat4x4_mul(mvp, p, m);
glUseProgram(program);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glfwSwapBuffers(window);
glfwPollEvents();
frame_count++;
current_time = glfwGetTime();
if (current_time - last_time > 1.0)
{
frame_rate = frame_count / (current_time - last_time);
frame_count = 0;
last_time = current_time;
update_window_title(window);
}
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Multi-threading 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 is intended to verify whether the OpenGL context part of
// the GLFW API is able to be used from multiple threads
//
//========================================================================
#include "tinycthread.h"
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
typedef struct
{
GLFWwindow* window;
const char* title;
float r, g, b;
thrd_t id;
} Thread;
static volatile int running = GLFW_TRUE;
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 (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
static int thread_main(void* data)
{
const Thread* thread = data;
glfwMakeContextCurrent(thread->window);
glfwSwapInterval(1);
while (running)
{
const float v = (float) fabs(sin(glfwGetTime() * 2.f));
glClearColor(thread->r * v, thread->g * v, thread->b * v, 0.f);
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(thread->window);
}
glfwMakeContextCurrent(NULL);
return 0;
}
int main(void)
{
int i, result;
Thread threads[] =
{
{ NULL, "Red", 1.f, 0.f, 0.f, 0 },
{ NULL, "Green", 0.f, 1.f, 0.f, 0 },
{ NULL, "Blue", 0.f, 0.f, 1.f, 0 }
};
const int count = sizeof(threads) / sizeof(Thread);
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
for (i = 0; i < count; i++)
{
threads[i].window = glfwCreateWindow(200, 200,
threads[i].title,
NULL, NULL);
if (!threads[i].window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetKeyCallback(threads[i].window, key_callback);
glfwSetWindowPos(threads[i].window, 200 + 250 * i, 200);
glfwShowWindow(threads[i].window);
}
glfwMakeContextCurrent(threads[0].window);
gladLoadGL(glfwGetProcAddress);
glfwMakeContextCurrent(NULL);
for (i = 0; i < count; i++)
{
if (thrd_create(&threads[i].id, thread_main, threads + i) !=
thrd_success)
{
fprintf(stderr, "Failed to create secondary thread\n");
glfwTerminate();
exit(EXIT_FAILURE);
}
}
while (running)
{
glfwWaitEvents();
for (i = 0; i < count; i++)
{
if (glfwWindowShouldClose(threads[i].window))
running = GLFW_FALSE;
}
}
for (i = 0; i < count; i++)
glfwHideWindow(threads[i].window);
for (i = 0; i < count; i++)
thrd_join(threads[i].id, &result);
exit(EXIT_SUCCESS);
}

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//========================================================================
// Event wait timeout 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 is intended to verify that waiting for events with timeout works
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <time.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
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 (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
static float nrand(void)
{
return (float) rand() / (float) RAND_MAX;
}
int main(void)
{
GLFWwindow* window;
srand((unsigned int) time(NULL));
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
window = glfwCreateWindow(640, 480, "Event Wait Timeout Test", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSetKeyCallback(window, key_callback);
while (!glfwWindowShouldClose(window))
{
int width, height;
float r = nrand(), g = nrand(), b = nrand();
float l = (float) sqrt(r * r + g * g + b * b);
glfwGetFramebufferSize(window, &width, &height);
glViewport(0, 0, width, height);
glClearColor(r / l, g / l, b / l, 1.f);
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwWaitEventsTimeout(1.0);
}
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// UTF-8 window title 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 sets a UTF-8 window title
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
int main(void)
{
GLFWwindow* window;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
window = glfwCreateWindow(400, 400, "English 日本語 русский язык 官話", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
while (!glfwWindowShouldClose(window))
{
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwWaitEvents();
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// 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);
}