639 lines
23 KiB
C
639 lines
23 KiB
C
//========================================================================
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// Context creation and information tool
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// Copyright (c) Camilla Berglund <elmindreda@elmindreda.org>
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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#include <glad/glad.h>
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#include <GLFW/glfw3.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "getopt.h"
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#ifdef _MSC_VER
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#define strcasecmp(x, y) _stricmp(x, y)
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#endif
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#define API_NAME_OPENGL "gl"
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#define API_NAME_OPENGL_ES "es"
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#define PROFILE_NAME_CORE "core"
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#define PROFILE_NAME_COMPAT "compat"
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#define STRATEGY_NAME_NONE "none"
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#define STRATEGY_NAME_LOSE "lose"
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#define BEHAVIOR_NAME_NONE "none"
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#define BEHAVIOR_NAME_FLUSH "flush"
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static void usage(void)
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{
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printf("Usage: glfwinfo [OPTION]...\n");
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printf("Options:\n");
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printf(" -a, --client-api=API the client API to use ("
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API_NAME_OPENGL " or "
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API_NAME_OPENGL_ES ")\n");
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printf(" -b, --behavior=BEHAVIOR the release behavior to use ("
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BEHAVIOR_NAME_NONE " or "
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BEHAVIOR_NAME_FLUSH ")\n");
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printf(" -d, --debug request a debug context\n");
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printf(" -f, --forward require a forward-compatible context\n");
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printf(" -h, --help show this help\n");
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printf(" -l, --list-extensions list all client API extensions\n");
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printf(" -m, --major=MAJOR the major number of the required "
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"client API version\n");
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printf(" -n, --minor=MINOR the minor number of the required "
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"client API version\n");
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printf(" -p, --profile=PROFILE the OpenGL profile to use ("
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PROFILE_NAME_CORE " or "
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PROFILE_NAME_COMPAT ")\n");
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printf(" -s, --robustness=STRATEGY the robustness strategy to use ("
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STRATEGY_NAME_NONE " or "
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STRATEGY_NAME_LOSE ")\n");
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printf(" -v, --version print version information\n");
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printf(" --red-bits=N the number of red bits to request\n");
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printf(" --green-bits=N the number of green bits to request\n");
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printf(" --blue-bits=N the number of blue bits to request\n");
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printf(" --alpha-bits=N the number of alpha bits to request\n");
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printf(" --depth-bits=N the number of depth bits to request\n");
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printf(" --stencil-bits=N the number of stencil bits to request\n");
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printf(" --accum-red-bits=N the number of red bits to request\n");
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printf(" --accum-green-bits=N the number of green bits to request\n");
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printf(" --accum-blue-bits=N the number of blue bits to request\n");
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printf(" --accum-alpha-bits=N the number of alpha bits to request\n");
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printf(" --aux-buffers=N the number of aux buffers to request\n");
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printf(" --samples=N the number of MSAA samples to request\n");
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printf(" --stereo request stereo rendering\n");
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printf(" --srgb request an sRGB capable framebuffer\n");
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printf(" --singlebuffer request single-buffering\n");
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printf(" --no-error request a context that does not emit errors\n");
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}
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static void error_callback(int error, const char* description)
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{
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fprintf(stderr, "Error: %s\n", description);
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}
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static const char* get_api_name(int api)
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{
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if (api == GLFW_OPENGL_API)
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return "OpenGL";
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else if (api == GLFW_OPENGL_ES_API)
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return "OpenGL ES";
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return "Unknown API";
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}
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static const char* get_profile_name_gl(GLint mask)
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{
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if (mask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT)
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return PROFILE_NAME_COMPAT;
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if (mask & GL_CONTEXT_CORE_PROFILE_BIT)
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return PROFILE_NAME_CORE;
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return "unknown";
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}
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static const char* get_profile_name_glfw(int profile)
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{
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if (profile == GLFW_OPENGL_COMPAT_PROFILE)
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return PROFILE_NAME_COMPAT;
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if (profile == GLFW_OPENGL_CORE_PROFILE)
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return PROFILE_NAME_CORE;
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return "unknown";
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}
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static const char* get_strategy_name_gl(GLint strategy)
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{
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if (strategy == GL_LOSE_CONTEXT_ON_RESET_ARB)
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return STRATEGY_NAME_LOSE;
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if (strategy == GL_NO_RESET_NOTIFICATION_ARB)
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return STRATEGY_NAME_NONE;
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return "unknown";
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}
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static const char* get_strategy_name_glfw(int strategy)
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{
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if (strategy == GLFW_LOSE_CONTEXT_ON_RESET)
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return STRATEGY_NAME_LOSE;
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if (strategy == GLFW_NO_RESET_NOTIFICATION)
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return STRATEGY_NAME_NONE;
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return "unknown";
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}
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static void list_extensions(int api, int major, int minor)
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{
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int i;
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GLint count;
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const GLubyte* extensions;
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printf("%s context supported extensions:\n", get_api_name(api));
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if (api == GLFW_OPENGL_API && major > 2)
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{
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glGetIntegerv(GL_NUM_EXTENSIONS, &count);
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for (i = 0; i < count; i++)
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puts((const char*) glGetStringi(GL_EXTENSIONS, i));
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}
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else
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{
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extensions = glGetString(GL_EXTENSIONS);
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while (*extensions != '\0')
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{
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if (*extensions == ' ')
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putchar('\n');
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else
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putchar(*extensions);
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extensions++;
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}
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}
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putchar('\n');
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}
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static int valid_version(void)
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{
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int major, minor, revision;
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glfwGetVersion(&major, &minor, &revision);
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if (major != GLFW_VERSION_MAJOR)
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{
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printf("*** ERROR: GLFW major version mismatch! ***\n");
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return GLFW_FALSE;
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}
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if (minor != GLFW_VERSION_MINOR || revision != GLFW_VERSION_REVISION)
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printf("*** WARNING: GLFW version mismatch! ***\n");
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return GLFW_TRUE;
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}
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static void print_version(void)
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{
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int major, minor, revision;
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glfwGetVersion(&major, &minor, &revision);
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printf("GLFW header version: %u.%u.%u\n",
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GLFW_VERSION_MAJOR,
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GLFW_VERSION_MINOR,
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GLFW_VERSION_REVISION);
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printf("GLFW library version: %u.%u.%u\n", major, minor, revision);
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printf("GLFW library version string: \"%s\"\n", glfwGetVersionString());
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}
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int main(int argc, char** argv)
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{
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int ch, api, major, minor, revision, profile;
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GLint redbits, greenbits, bluebits, alphabits, depthbits, stencilbits;
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int list = GLFW_FALSE;
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GLFWwindow* window;
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enum { API, BEHAVIOR, DEBUG, FORWARD, HELP, EXTENSIONS,
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MAJOR, MINOR, PROFILE, ROBUSTNESS, VERSION,
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REDBITS, GREENBITS, BLUEBITS, ALPHABITS, DEPTHBITS, STENCILBITS,
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ACCUMREDBITS, ACCUMGREENBITS, ACCUMBLUEBITS, ACCUMALPHABITS,
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AUXBUFFERS, SAMPLES, STEREO, SRGB, SINGLEBUFFER, NOERROR_SRSLY };
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const struct option options[] =
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{
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{ "behavior", 1, NULL, BEHAVIOR },
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{ "client-api", 1, NULL, API },
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{ "debug", 0, NULL, DEBUG },
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{ "forward", 0, NULL, FORWARD },
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{ "help", 0, NULL, HELP },
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{ "list-extensions", 0, NULL, EXTENSIONS },
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{ "major", 1, NULL, MAJOR },
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{ "minor", 1, NULL, MINOR },
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{ "profile", 1, NULL, PROFILE },
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{ "robustness", 1, NULL, ROBUSTNESS },
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{ "version", 0, NULL, VERSION },
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{ "red-bits", 1, NULL, REDBITS },
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{ "green-bits", 1, NULL, GREENBITS },
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{ "blue-bits", 1, NULL, BLUEBITS },
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{ "alpha-bits", 1, NULL, ALPHABITS },
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{ "depth-bits", 1, NULL, DEPTHBITS },
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{ "stencil-bits", 1, NULL, STENCILBITS },
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{ "accum-red-bits", 1, NULL, ACCUMREDBITS },
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{ "accum-green-bits", 1, NULL, ACCUMGREENBITS },
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{ "accum-blue-bits", 1, NULL, ACCUMBLUEBITS },
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{ "accum-alpha-bits", 1, NULL, ACCUMALPHABITS },
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{ "aux-buffers", 1, NULL, AUXBUFFERS },
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{ "samples", 1, NULL, SAMPLES },
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{ "stereo", 0, NULL, STEREO },
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{ "srgb", 0, NULL, SRGB },
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{ "singlebuffer", 0, NULL, SINGLEBUFFER },
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{ "no-error", 0, NULL, NOERROR_SRSLY },
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{ NULL, 0, NULL, 0 }
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};
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// Initialize GLFW and create window
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if (!valid_version())
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exit(EXIT_FAILURE);
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glfwSetErrorCallback(error_callback);
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if (!glfwInit())
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exit(EXIT_FAILURE);
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while ((ch = getopt_long(argc, argv, "a:b:dfhlm:n:p:s:v", options, NULL)) != -1)
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{
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switch (ch)
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{
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case 'a':
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case API:
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if (strcasecmp(optarg, API_NAME_OPENGL) == 0)
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glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_API);
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else if (strcasecmp(optarg, API_NAME_OPENGL_ES) == 0)
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glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
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else
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{
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usage();
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exit(EXIT_FAILURE);
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}
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break;
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case 'b':
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case BEHAVIOR:
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if (strcasecmp(optarg, BEHAVIOR_NAME_NONE) == 0)
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{
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glfwWindowHint(GLFW_CONTEXT_RELEASE_BEHAVIOR,
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GLFW_RELEASE_BEHAVIOR_NONE);
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}
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else if (strcasecmp(optarg, BEHAVIOR_NAME_FLUSH) == 0)
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{
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glfwWindowHint(GLFW_CONTEXT_RELEASE_BEHAVIOR,
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GLFW_RELEASE_BEHAVIOR_FLUSH);
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}
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else
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{
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usage();
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exit(EXIT_FAILURE);
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}
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break;
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case 'd':
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case DEBUG:
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glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GLFW_TRUE);
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break;
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case 'f':
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case FORWARD:
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE);
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break;
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case 'h':
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case HELP:
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usage();
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exit(EXIT_SUCCESS);
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case 'l':
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case EXTENSIONS:
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list = GLFW_TRUE;
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break;
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case 'm':
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case MAJOR:
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, atoi(optarg));
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break;
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case 'n':
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case MINOR:
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, atoi(optarg));
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break;
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case 'p':
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case PROFILE:
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if (strcasecmp(optarg, PROFILE_NAME_CORE) == 0)
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{
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glfwWindowHint(GLFW_OPENGL_PROFILE,
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GLFW_OPENGL_CORE_PROFILE);
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}
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else if (strcasecmp(optarg, PROFILE_NAME_COMPAT) == 0)
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{
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glfwWindowHint(GLFW_OPENGL_PROFILE,
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GLFW_OPENGL_COMPAT_PROFILE);
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}
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else
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{
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usage();
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exit(EXIT_FAILURE);
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}
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break;
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case 's':
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case ROBUSTNESS:
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if (strcasecmp(optarg, STRATEGY_NAME_NONE) == 0)
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{
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glfwWindowHint(GLFW_CONTEXT_ROBUSTNESS,
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GLFW_NO_RESET_NOTIFICATION);
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}
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else if (strcasecmp(optarg, STRATEGY_NAME_LOSE) == 0)
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{
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glfwWindowHint(GLFW_CONTEXT_ROBUSTNESS,
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GLFW_LOSE_CONTEXT_ON_RESET);
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}
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else
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{
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usage();
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exit(EXIT_FAILURE);
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}
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break;
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case 'v':
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case VERSION:
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print_version();
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exit(EXIT_SUCCESS);
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case REDBITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_RED_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_RED_BITS, atoi(optarg));
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break;
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case GREENBITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_GREEN_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_GREEN_BITS, atoi(optarg));
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break;
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case BLUEBITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_BLUE_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_BLUE_BITS, atoi(optarg));
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break;
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case ALPHABITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_ALPHA_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_ALPHA_BITS, atoi(optarg));
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break;
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case DEPTHBITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_DEPTH_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_DEPTH_BITS, atoi(optarg));
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break;
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case STENCILBITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_STENCIL_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_STENCIL_BITS, atoi(optarg));
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break;
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case ACCUMREDBITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_ACCUM_RED_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_ACCUM_RED_BITS, atoi(optarg));
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break;
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case ACCUMGREENBITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_ACCUM_GREEN_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_ACCUM_GREEN_BITS, atoi(optarg));
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break;
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case ACCUMBLUEBITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_ACCUM_BLUE_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_ACCUM_BLUE_BITS, atoi(optarg));
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break;
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case ACCUMALPHABITS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_ACCUM_ALPHA_BITS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_ACCUM_ALPHA_BITS, atoi(optarg));
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break;
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case AUXBUFFERS:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_AUX_BUFFERS, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_AUX_BUFFERS, atoi(optarg));
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break;
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case SAMPLES:
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if (strcmp(optarg, "-") == 0)
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glfwWindowHint(GLFW_SAMPLES, GLFW_DONT_CARE);
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else
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glfwWindowHint(GLFW_SAMPLES, atoi(optarg));
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break;
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case STEREO:
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glfwWindowHint(GLFW_STEREO, GLFW_TRUE);
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break;
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case SRGB:
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glfwWindowHint(GLFW_SRGB_CAPABLE, GLFW_TRUE);
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break;
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case SINGLEBUFFER:
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glfwWindowHint(GLFW_DOUBLEBUFFER, GLFW_FALSE);
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break;
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case NOERROR_SRSLY:
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glfwWindowHint(GLFW_CONTEXT_NO_ERROR, GLFW_TRUE);
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break;
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default:
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usage();
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exit(EXIT_FAILURE);
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}
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}
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print_version();
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glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
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window = glfwCreateWindow(200, 200, "Version", NULL, NULL);
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if (!window)
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{
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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glfwMakeContextCurrent(window);
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gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
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// Report client API version
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api = glfwGetWindowAttrib(window, GLFW_CLIENT_API);
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major = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MAJOR);
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minor = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MINOR);
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revision = glfwGetWindowAttrib(window, GLFW_CONTEXT_REVISION);
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profile = glfwGetWindowAttrib(window, GLFW_OPENGL_PROFILE);
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printf("%s context version string: \"%s\"\n",
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get_api_name(api),
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glGetString(GL_VERSION));
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printf("%s context version parsed by GLFW: %u.%u.%u\n",
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get_api_name(api),
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major, minor, revision);
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// Report client API context properties
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if (api == GLFW_OPENGL_API)
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{
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if (major >= 3)
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{
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GLint flags;
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glGetIntegerv(GL_CONTEXT_FLAGS, &flags);
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printf("%s context flags (0x%08x):", get_api_name(api), flags);
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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(api));
|
|
|
|
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(api),
|
|
mask,
|
|
get_profile_name_gl(mask));
|
|
|
|
printf("%s profile mask parsed by GLFW: %s\n",
|
|
get_api_name(api),
|
|
get_profile_name_glfw(profile));
|
|
}
|
|
|
|
if (glfwExtensionSupported("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(api),
|
|
strategy,
|
|
get_strategy_name_gl(strategy));
|
|
|
|
printf("%s robustness strategy parsed by GLFW: %s\n",
|
|
get_api_name(api),
|
|
get_strategy_name_glfw(robustness));
|
|
}
|
|
}
|
|
|
|
printf("%s context renderer string: \"%s\"\n",
|
|
get_api_name(api),
|
|
glGetString(GL_RENDERER));
|
|
printf("%s context vendor string: \"%s\"\n",
|
|
get_api_name(api),
|
|
glGetString(GL_VENDOR));
|
|
|
|
if (major >= 2)
|
|
{
|
|
printf("%s context shading language version: \"%s\"\n",
|
|
get_api_name(api),
|
|
glGetString(GL_SHADING_LANGUAGE_VERSION));
|
|
}
|
|
|
|
printf("Framebuffer:\n");
|
|
|
|
if (api == 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 (api == GLFW_OPENGL_ES_API ||
|
|
glfwExtensionSupported("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 (api == 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);
|
|
}
|
|
|
|
// Report client API extensions
|
|
if (list)
|
|
list_extensions(api, major, minor);
|
|
|
|
glfwTerminate();
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|