6.09HEADmaster

1 files changed, 0 insertions, 379 deletions

diff --git a/hacks/glx/xlock-gl-utils.c b/hacks/glx/xlock-gl-utils.c
deleted file mode 100644
index 0d017b8..0000000
--- a/hacks/glx/xlock-gl-utils.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/* xlock-gl.c --- xscreensaver compatibility layer for xlockmore GL modules.
- * xscreensaver, Copyright (c) 1997-2021 Jamie Zawinski <jwz@jwz.org>
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation.  No representations are made about the suitability of this
- * software for any purpose.  It is provided "as is" without express or 
- * implied warranty.
- *
- * This file, along with xlockmore.h, make it possible to compile an xlockmore
- * GL module into a standalone program, and thus use it with xscreensaver.
- * By Jamie Zawinski <jwz@jwz.org> on 31-May-97.
- */
-
-#include "xlockmoreI.h"
-
-#ifdef HAVE_GL  /* whole file */
-
-#include "texfont.h"
-
-#ifndef isupper
-# define isupper(c)  ((c) >= 'A' && (c) <= 'Z')
-#endif
-#ifndef _tolower
-# define _tolower(c)  ((c) - 'A' + 'a')
-#endif
-
-
-# ifndef HAVE_EGL
-/* Gag -- we use this to turn X errors from glXCreateContext() into
-   something that will actually make sense to the user.
- */
-static XErrorHandler orig_ehandler = 0;
-static Bool got_error = 0;
-
-static int
-BadValue_ehandler (Display *dpy, XErrorEvent *error)
-{
-  if (error->error_code == BadValue)
-    {
-      got_error = True;
-      return 0;
-    }
-  else
-    return orig_ehandler (dpy, error);
-}
-#endif /* !HAVE_EGL */
-
-
-GLXContext *
-init_GL(ModeInfo * mi)
-{
-  /* The Android version of this function is in android/screenhack-android.c */
-  Display *dpy = mi->dpy;
-  Window window = mi->window;
-  Screen *screen = mi->xgwa.screen;
-  Visual *visual = mi->xgwa.visual;
-  XVisualInfo vi_in, *vi_out;
-  int out_count;
-
-  if (mi->glx_context) {
-    glXMakeCurrent (dpy, window, mi->glx_context);
-    return &mi->glx_context;
-  }
-
-# ifdef HAVE_JWZGLES
-  mi->jwzgles_state = jwzgles_make_state();
-  mi->xlmft->jwzgles_make_current = jwzgles_make_current;
-  mi->xlmft->jwzgles_free = jwzgles_free_state;
-  mi->xlmft->jwzgles_make_current (mi->jwzgles_state);
-# endif
-
-  vi_in.screen = screen_number (screen);
-  vi_in.visualid = XVisualIDFromVisual (visual);
-  vi_out = XGetVisualInfo (dpy, VisualScreenMask|VisualIDMask,
-			   &vi_in, &out_count);
-  if (! vi_out) abort ();
-
-# ifdef HAVE_EGL
-  {
-    egl_data *d = (egl_data *) calloc (1, sizeof(*d));
-
-    /* The correct EGL config has been selected by utils/visual-gl.c
-       (via hacks/glx/xscreensaver-gl-visual) by calling get_egl_config()
-       from get_gl_visual and returning the corresponding X11 Visual.
-       That visual is the one that was used to create our window. We will
-       pass the corresponding visual ID to get_egl_config() to obtain the
-       same configuration here. */
-    unsigned int vid = XVisualIDFromVisual (visual);
-
-    const EGLint ctxattr1[] = {
-# ifdef HAVE_JWZGLES
-      EGL_CONTEXT_MAJOR_VERSION, 1,	/* Request an OpenGL ES 1.1 context. */
-      EGL_CONTEXT_MINOR_VERSION, 1,
-# else
-      EGL_CONTEXT_MAJOR_VERSION, 1,	/* Request an OpenGL 1.3 context. */
-      EGL_CONTEXT_MINOR_VERSION, 3,
-# endif
-      EGL_NONE
-    };
-    const EGLint *ctxattr = ctxattr1;
-
-# ifdef HAVE_GLES3
-    const EGLint ctxattr3[] = {
-      EGL_CONTEXT_MAJOR_VERSION, 3,	/* Request an OpenGL ES 3.0 context. */
-      EGL_CONTEXT_MINOR_VERSION, 0,
-      EGL_NONE
-    };
-
-    if (get_boolean_resource (dpy, "prefersGLSL", "PrefersGLSL"))
-      ctxattr = ctxattr3;
-# endif /* HAVE_GLES3 */
-
-    /* This is re-used, no need to close it. */
-    d->egl_display = eglGetPlatformDisplay (EGL_PLATFORM_X11_KHR,
-                                            (EGLNativeDisplayType) dpy, NULL);
-    if (!d->egl_display)
-      {
-        fprintf (stderr, "%s: eglGetPlatformDisplay failed\n", progname);
-        abort();
-      }
-
-    get_egl_config (dpy, d->egl_display, vid, &d->egl_config);
-    if (!d->egl_config)
-      {
-        fprintf (stderr, "%s: no matching EGL config for X11 visual 0x%lx\n",
-                 progname, vi_out->visualid);
-        abort();
-      }
-
-    d->egl_surface = eglCreatePlatformWindowSurface (d->egl_display,
-                                                     d->egl_config,
-                                                     &window, NULL);
-    if (! d->egl_surface)
-      {
-        fprintf (stderr, "%s: eglCreatePlatformWindowSurface failed:"
-                 " window 0x%lx visual 0x%x\n", progname, window, vid);
-        abort();
-      }
-
-#ifdef HAVE_JWZGLES
-    /* This call is not strictly necessary to get an OpenGL ES context
-       since the default API is EGL_OPENGL_ES_API, but it  makes our
-       intention clear.
-     */
-    if (!eglBindAPI (EGL_OPENGL_ES_API))
-      {
-        fprintf (stderr, "%s: eglBindAPI failed\n", progname);
-      }
-#else /* !HAVE_JWZGLES */
-    /* This is necessary to get a OpenGL context instead of an OpenGLES
-       context.
-     */
-    if (!eglBindAPI (EGL_OPENGL_API))
-      {
-        fprintf (stderr, "%s: eglBindAPI failed\n", progname);
-      }
-#endif /* !HAVE_JWZGLES */
-
-    d->egl_context = eglCreateContext (d->egl_display, d->egl_config,
-                                       EGL_NO_CONTEXT, ctxattr);
-
-# ifdef HAVE_GLES3
-    /* If creation of a GLES 3.0 context failed, fall back to GLES 1.x. */
-    if (!d->egl_context && ctxattr != ctxattr1)
-      {
-        /* fprintf (stderr, "%s: eglCreateContext 3.0 failed\n", progname); */
-        d->egl_context = eglCreateContext (d->egl_display, d->egl_config,
-                                           EGL_NO_CONTEXT, ctxattr1);
-      }
-# endif /* HAVE_GLES3 */
-
-    if (!d->egl_context)
-      {
-        fprintf (stderr, "%s: eglCreateContext failed\n", progname);
-        abort();
-      }
-
-    /* describe_gl_visual (stderr, screen, visual, False); */
-
-    mi->glx_context = d;  /* #### leaked */
-
-    glXMakeCurrent (dpy, window, mi->glx_context);
-  }
-# else /* GLX */
-  {
-    XSync (dpy, False);
-    orig_ehandler = XSetErrorHandler (BadValue_ehandler);
-    mi->glx_context = glXCreateContext (dpy, vi_out, 0, GL_TRUE);
-    XSync (dpy, False);
-    XSetErrorHandler (orig_ehandler);
-    if (got_error)
-      mi->glx_context = 0;
-  }
-
-  if (!mi->glx_context)
-    {
-      fprintf(stderr, "%s: couldn't create GL context for visual 0x%x.\n",
-	      progname, (unsigned int) XVisualIDFromVisual (visual));
-      exit(1);
-    }
-
-  glXMakeCurrent (dpy, window, mi->glx_context);
-
-  {
-    GLboolean rgba_mode = 0;
-    glGetBooleanv(GL_RGBA_MODE, &rgba_mode);
-    if (!rgba_mode)
-      {
-	glIndexi (WhitePixelOfScreen (screen));
-	glClearIndex (BlackPixelOfScreen (screen));
-      }
-  }
-# endif /* GLX */
-
-  XFree((char *) vi_out);
-
-
-  /* jwz: the doc for glDrawBuffer says "The initial value is GL_FRONT
-     for single-buffered contexts, and GL_BACK for double-buffered
-     contexts."  However, I find that this is not always the case,
-     at least with Mesa 3.4.2 -- sometimes the default seems to be
-     GL_FRONT even when glGet(GL_DOUBLEBUFFER) is true.  So, let's
-     make sure.
-
-     Oh, hmm -- maybe this only happens when we are re-using the
-     xscreensaver window, and the previous GL hack happened to die with
-     the other buffer selected?  I'm not sure.  Anyway, this fixes it.
-   */
-  {
-    GLboolean d = False;
-    glGetBooleanv (GL_DOUBLEBUFFER, &d);
-    if (d)
-      glDrawBuffer (GL_BACK);
-    else
-      glDrawBuffer (GL_FRONT);
-  }
-
-  /* Sometimes glDrawBuffer() throws "invalid op". Dunno why. Ignore. */
-  clear_gl_error ();
-
-  /* Process the -background argument. */
-  {
-    char *s = get_string_resource(mi->dpy, "background", "Background");
-    XColor c = { 0, };
-    if (! XParseColor (dpy, mi->xgwa.colormap, s, &c))
-      fprintf (stderr, "%s: can't parse color %s; using black.\n", 
-               progname, s);
-    if (s) free (s);
-    glClearColor (c.red   / 65535.0,
-                  c.green / 65535.0,
-                  c.blue  / 65535.0,
-                  1.0);
-  }
-
-  glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  /* GLXContext is already a pointer type.
-     Why this function returns a pointer to a pointer, I have no idea...
-   */
-  return &mi->glx_context;
-}
-
-
-
-/* clear away any lingering error codes */
-void
-clear_gl_error (void)
-{
-  while (glGetError() != GL_NO_ERROR)
-    ;
-}
-
-/* report a GL error. */
-void
-check_gl_error (const char *type)
-{
-  char buf[100];
-  GLenum i;
-  const char *e;
-  switch ((i = glGetError())) {
-  case GL_NO_ERROR: return;
-  case GL_INVALID_ENUM:          e = "invalid enum";      break;
-  case GL_INVALID_VALUE:         e = "invalid value";     break;
-  case GL_INVALID_OPERATION:     e = "invalid operation"; break;
-  case GL_STACK_OVERFLOW:        e = "stack overflow";    break;
-  case GL_STACK_UNDERFLOW:       e = "stack underflow";   break;
-  case GL_OUT_OF_MEMORY:         e = "out of memory";     break;
-#ifdef GL_INVALID_FRAMEBUFFER_OPERATION
-  case GL_INVALID_FRAMEBUFFER_OPERATION:
-    e = "invalid framebuffer operation";
-    break;
-#endif
-#ifdef GL_TABLE_TOO_LARGE_EXT
-  case GL_TABLE_TOO_LARGE_EXT:   e = "table too large";   break;
-#endif
-#ifdef GL_TEXTURE_TOO_LARGE_EXT
-  case GL_TEXTURE_TOO_LARGE_EXT: e = "texture too large"; break;
-#endif
-  default:
-    e = buf; sprintf (buf, "unknown error %d", (int) i); break;
-  }
-  fprintf (stderr, "%s: %s error: %s\n", progname, type, e);
-  exit (1);
-}
-
-
-/* Callback in xscreensaver_function_table, via xlockmore.c.
- */
-Visual *
-xlockmore_pick_gl_visual (Screen *screen)
-{
-  /* pick the "best" visual by interrogating the GL library instead of
-     by asking Xlib.  GL knows better.
-   */
-  Visual *v = 0;
-  Display *dpy = DisplayOfScreen (screen);
-  char *string = get_string_resource (dpy, "visualID", "VisualID");
-  char *s;
-
-  if (string)
-    for (s = string; *s; s++)
-      if (isupper (*s)) *s = _tolower (*s);
-
-  if (!string || !*string ||
-      !strcmp (string, "gl") ||
-      !strcmp (string, "best") ||
-      !strcmp (string, "color") ||
-      !strcmp (string, "default"))
-    v = get_gl_visual (screen);		/* from ../utils/visual-gl.c */
-
-  if (string)
-    free (string);
-
-  return v;
-}
-
-
-/* Callback in xscreensaver_function_table, via xlockmore.c.
- */
-Bool
-xlockmore_validate_gl_visual (Screen *screen, const char *name, Visual *visual)
-{
-  return validate_gl_visual (stderr, screen, name, visual);
-}
-
-
-#ifdef HAVE_EGL
-
-static egl_data *global_egl_kludge = 0;
-
-Bool
-glXMakeCurrent (Display *dpy, GLXDrawable window, egl_data *d)
-{
-  if (!d) abort();
-  if (! eglMakeCurrent (d->egl_display, d->egl_surface, d->egl_surface,
-                        d->egl_context))
-    abort();
-
-  global_egl_kludge = d;
-
-  return True;
-}
-
-void
-glXSwapBuffers (Display *dpy, GLXDrawable win)
-{
-  egl_data *d = global_egl_kludge;
-  if (!d) abort();
-  if (! eglSwapBuffers (d->egl_display, d->egl_surface))
-    abort();
-}
-
-#endif /* HAVE_EGL */
-
-
-#endif /* HAVE_GL -- whole file */