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Parameters are something specified at creation time and are often immutable, while many of the values returned by glfwGetWindowParam reflected current state not controlled by any parameter or hint.
132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
//========================================================================
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// Default window/context test
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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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//
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// This test creates a windowed mode window with all window hints set to
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// default values and then reports the actual attributes of the created
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// window and context
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//
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//========================================================================
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#include <GLFW/glfw3.h>
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#include <GL/glext.h>
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#include <stdio.h>
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#include <stdlib.h>
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typedef struct
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{
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int attrib;
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const char* ext;
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const char* name;
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} AttribGL;
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typedef struct
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{
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int attrib;
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const char* name;
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} AttribGLFW;
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static AttribGL gl_attribs[] =
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{
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{ GL_RED_BITS, NULL, "red bits" },
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{ GL_GREEN_BITS, NULL, "green bits" },
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{ GL_BLUE_BITS, NULL, "blue bits" },
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{ GL_ALPHA_BITS, NULL, "alpha bits" },
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{ GL_DEPTH_BITS, NULL, "depth bits" },
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{ GL_STENCIL_BITS, NULL, "stencil bits" },
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{ GL_STEREO, NULL, "stereo" },
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{ GL_SAMPLES_ARB, "GL_ARB_multisample", "FSAA samples" },
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{ 0, NULL, NULL }
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};
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static AttribGLFW glfw_attribs[] =
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{
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{ GLFW_CONTEXT_VERSION_MAJOR, "Context version major" },
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{ GLFW_CONTEXT_VERSION_MINOR, "Context version minor" },
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{ GLFW_OPENGL_FORWARD_COMPAT, "OpenGL forward compatible" },
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{ GLFW_OPENGL_DEBUG_CONTEXT, "OpenGL debug context" },
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{ GLFW_OPENGL_PROFILE, "OpenGL profile" },
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{ 0, NULL }
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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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int main(void)
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{
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int i, width, height;
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GLFWwindow* window;
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glfwSetErrorCallback(error_callback);
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if (!glfwInit())
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exit(EXIT_FAILURE);
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glfwWindowHint(GLFW_VISIBLE, GL_FALSE);
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window = glfwCreateWindow(640, 480, "Defaults", 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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glfwGetWindowSize(window, &width, &height);
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printf("window size: %ix%i\n", width, height);
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for (i = 0; glfw_attribs[i].name; i++)
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{
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printf("%s: %i\n",
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glfw_attribs[i].name,
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glfwGetWindowAttrib(window, glfw_attribs[i].attrib));
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}
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for (i = 0; gl_attribs[i].name; i++)
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{
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GLint value = 0;
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if (gl_attribs[i].ext)
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{
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if (!glfwExtensionSupported(gl_attribs[i].ext))
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continue;
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}
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glGetIntegerv(gl_attribs[i].attrib, &value);
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printf("%s: %i\n", gl_attribs[i].name, value);
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}
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glfwDestroyWindow(window);
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window = NULL;
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glfwTerminate();
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exit(EXIT_SUCCESS);
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}
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