mirror of
https://github.com/nigels-com/glew.git
synced 2024-11-11 08:43:49 +00:00
added command line flags to glewinfo
git-svn-id: https://glew.svn.sourceforge.net/svnroot/glew/trunk/glew@208 783a27ee-832a-0410-bc00-9f386506c6dd
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@ -4,10 +4,27 @@
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/* ------------------------------------------------------------------------ */
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int main ()
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int main (int argc, char** argv)
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{
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GLuint err;
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if (GL_TRUE == glewCreateContext())
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char* display = NULL;
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int visual = -1;
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#ifdef _WIN32
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const char* visual_str = "PixelFormat";
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#else
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const char* visual_str = "Visual";
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#endif
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if (glewParseArgs(argc-1, argv+1, &display, &visual))
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{
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#ifdef _WIN32
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fprintf(stderr, "Usage: glewinfo [-pf <id>]\n");
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#else
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fprintf(stderr, "Usage: glewinfo [-display <display>] [-visual <id>]\n");
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#endif
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return 1;
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}
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if (GL_TRUE == glewCreateContext(display, &visual))
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{
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fprintf(stderr, "Error: glewCreateContext failed\n");
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glewDestroyContext();
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@ -30,10 +47,11 @@ int main ()
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fprintf(f, "---------------------------\n");
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fprintf(f, " GLEW Extension Info\n");
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fprintf(f, "---------------------------\n\n");
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fprintf(f, "GLEW version %s\n", glewGetString(GLEW_VERSION));
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fprintf(f, "Reporting capabilities of %s %d\n", visual_str, visual);
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fprintf(f, "Running on a %s from %s\n",
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glGetString(GL_RENDERER), glGetString(GL_VENDOR));
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fprintf(f, "OpenGL version %s is supported\n", glGetString(GL_VERSION));
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fprintf(f, "GLEW version %s is supported\n", glewGetString(GLEW_VERSION));
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glewInfo();
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#ifdef _WIN32
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wglewInfo();
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@ -47,17 +65,49 @@ int main ()
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/* ------------------------------------------------------------------------ */
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GLboolean glewParseArgs (int argc, char** argv, char** display, int* visual)
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{
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int p = 0;
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while (p < argc)
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{
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#ifdef _WIN32
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if (!strcmp(argv[p], "-pf"))
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{
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if (++p >= argc) return GL_TRUE;
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*visual = atoi(argv[p++]);
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}
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else
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return GL_TRUE;
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#else
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if (!strcmp(argv[p], "-display"))
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{
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if (++p >= argc) return GL_TRUE;
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*display = argv[p++];
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}
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else if (!strcmp(argv[p], "-visual") || !strcmp(argv[p], "-pf"))
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{
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if (++p >= argc) return GL_TRUE;
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*visual = atoi(argv[p++]);
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}
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else
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return GL_TRUE;
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#endif
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}
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return GL_FALSE;
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}
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/* ------------------------------------------------------------------------ */
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#ifdef _WIN32
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HWND wnd = NULL;
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HDC dc = NULL;
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HGLRC rc = NULL;
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GLboolean glewCreateContext ()
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GLboolean glewCreateContext (const char* display, int* visual)
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{
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WNDCLASS wc;
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PIXELFORMATDESCRIPTOR pfd;
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int pf;
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/* register window class */
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ZeroMemory(&wc, sizeof(WNDCLASS));
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wc.hInstance = GetModuleHandle(NULL);
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@ -72,13 +122,16 @@ GLboolean glewCreateContext ()
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if (NULL == dc) return GL_TRUE;
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/* find pixel format */
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ZeroMemory(&pfd, sizeof(PIXELFORMATDESCRIPTOR));
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pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
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pf = ChoosePixelFormat(dc, &pfd);
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if (pf == 0) return GL_TRUE;
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if (*visual == -1) /* find default */
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{
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pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
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*visual = ChoosePixelFormat(dc, &pfd);
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if (*visual == 0) return GL_TRUE;
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}
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/* set the pixel format for the dc */
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if (FALSE == SetPixelFormat(dc, pf, &pfd)) return GL_TRUE;
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if (FALSE == SetPixelFormat(dc, *visual, &pfd)) return GL_TRUE;
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/* create rendering context */
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rc = wglCreateContext(dc);
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if (NULL == rc) return GL_TRUE;
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@ -105,7 +158,7 @@ void glewDestroyContext ()
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AGLContext ctx, octx;
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GLboolean glewCreateContext ()
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GLboolean glewCreateContext (const char* display, int* visual)
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{
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int attrib[] = { AGL_RGBA, AGL_NONE };
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AGLPixelFormat pf;
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@ -140,13 +193,13 @@ GLXContext ctx = NULL;
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Window wnd;
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Colormap cmap;
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GLboolean glewCreateContext ()
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GLboolean glewCreateContext (const char* display, int* visual)
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{
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int attrib[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
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int erb, evb;
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XSetWindowAttributes swa;
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/* open display */
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dpy = XOpenDisplay(NULL);
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dpy = XOpenDisplay(display);
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if (NULL == dpy) return GL_TRUE;
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/* query for glx */
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if (!glXQueryExtension(dpy, &erb, &evb)) return GL_TRUE;
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@ -30,6 +30,7 @@
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*/
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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 <GL/glew.h>
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#if defined(_WIN32)
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@ -40,7 +41,8 @@
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static FILE* f;
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GLboolean glewCreateContext ();
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GLboolean glewCreateContext (const char* display, int* visual);
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GLboolean glewParseArgs (int argc, char** argv, char** display, int* visual);
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void glewDestroyContext ();
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/* ------------------------------------------------------------------------- */
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