From http://www.jwz.org/xscreensaver/xscreensaver-5.37.tar.gz

[xscreensaver] / hacks / xlockmoreI.h

diff --git a/hacks/xlockmoreI.h b/hacks/xlockmoreI.h
index ef7b51d8a5d6d9d32ef639005bad0db3b67c2c47..432e600c39f82652e29d65f0c9a504e9ec8d53ad 100644 (file)
--- a/hacks/xlockmoreI.h
+++ b/hacks/xlockmoreI.h
@@ -1,5 +1,5 @@
 /* xlockmore.h --- xscreensaver compatibility layer for xlockmore modules.
- * xscreensaver, Copyright (c) 1997, 1998, 2001 Jamie Zawinski <jwz@jwz.org>
+ * xscreensaver, Copyright (c) 1997-2014 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
@@ -15,39 +15,81 @@
 #ifndef __XLOCKMORE_INTERNAL_H__
 #define __XLOCKMORE_INTERNAL_H__
 
-#include "screenhack.h"
+#include <time.h>
 
-#ifdef HAVE_XSHM_EXTENSION
-# include "xshm.h"
-#endif /* HAVE_XSHM_EXTENSION */
+#include "screenhackI.h"
+#include "xshm.h"
 
 
+typedef struct ModeInfo ModeInfo;
+
+#ifdef USE_GL
+
 /* I'm told that the Sun version of OpenGL needs to have the constant
    SUN_OGL_NO_VERTEX_MACROS defined in order for morph3d to compile
    (the number of arguments to the glNormal3f macro changes...)
    Verified with gcc 2.7.2.2 and Sun cc 4.2 with OpenGL 1.1.1 dev 4
    on Solaris 2.5.1.
  */
-#ifndef HAVE_MESA_GL
-# if defined(__sun) && defined(__SVR4) /* Solaris */
-#  define SUN_OGL_NO_VERTEX_MACROS 1
-# endif /* Solaris */
-#endif /* !HAVE_MESA_GL */
+# ifndef HAVE_MESA_GL
+#  if defined(__sun) && defined(__SVR4)        /* Solaris */
+#   define SUN_OGL_NO_VERTEX_MACROS 1
+#  endif /* Solaris */
+# endif /* !HAVE_MESA_GL */
 
+# ifdef HAVE_COCOA
+#  ifndef USE_IPHONE
+#   include <OpenGL/gl.h>
+#   include <OpenGL/glu.h>
+#  endif
+# elif defined(HAVE_ANDROID)
+#  include <GLES/gl.h>
+# else
+#  include <GL/gl.h>
+#  include <GL/glu.h>
+#  include <GL/glx.h>
+# endif
+
+# ifdef HAVE_JWZGLES
+#  include "jwzgles.h"
+# endif /* HAVE_JWZGLES */
+
+
+  extern GLXContext *init_GL (ModeInfo *);
+  extern void xlockmore_reset_gl_state(void);
+  extern void clear_gl_error (void);
+  extern void check_gl_error (const char *type);
+
+  extern Visual *xlockmore_pick_gl_visual (Screen *);
+  extern Bool xlockmore_validate_gl_visual (Screen *, const char *, Visual *);
+
+#endif /* !USE_GL */
+
+/* These are only used in GL mode, but I don't understand why XCode
+   isn't seeing the prototypes for them in glx/fps-gl.c... */
+extern void do_fps (ModeInfo *);
+extern void xlockmore_gl_compute_fps (Display *, Window, fps_state *, void *);
+extern void xlockmore_gl_draw_fps (ModeInfo *);
+# define do_fps xlockmore_gl_draw_fps
 
-/* Compatibility with the xlockmore RNG API
-   (note that the xlockmore hacks never expect negative numbers.)
- */
-#define LRAND()                        ((long) (random() & 0x7fffffff))
-#define NRAND(n)               ((int) (LRAND() % (n)))
-#define MAXRAND                        (2147483648.0) /* unsigned 1<<31 as a float */
-#define SRAND(n)               /* already seeded by screenhack.c */
 
+extern void xlockmore_setup (struct xscreensaver_function_table *, void *);
+extern void xlockmore_do_fps (Display *, Window, fps_state *, void *);
 
-typedef struct ModeInfo {
+
+extern void xlockmore_mi_init (ModeInfo *, size_t, void **,
+                               void (*) (ModeInfo *));
+
+
+/* The xlockmore RNG API is implemented in utils/yarandom.h. */
+
+
+struct ModeInfo {
+  struct xlockmore_function_table *xlmft;
   Display *dpy;
   Window window;
   Bool root_p;
+  int screen_number;
   int npixels;
   unsigned long *pixels;
   XColor *colors;
@@ -70,14 +112,12 @@ typedef struct ModeInfo {
   Bool wireframe_p;
   Bool is_drawn;
 
+  /* Used only by OpenGL programs, since FPS is tricky there. */
+  fps_state *fpst;
   Bool fps_p;
-
-#ifdef HAVE_XSHM_EXTENSION
-  Bool use_shm;
-  XShmSegmentInfo shm_info;
-#endif
-
-} ModeInfo;
+  unsigned long polygon_count;  /* These values are for -fps display only */
+  double recursion_depth;
+};
 
 typedef enum {  t_String, t_Float, t_Int, t_Bool } xlockmore_type;
 
@@ -102,14 +142,32 @@ typedef struct {
   OptionStruct *desc;
 } ModeSpecOpt;
 
-extern void xlockmore_screenhack (Display *dpy, Window window,
-                                 Bool want_writable_colors,
-                                 Bool want_uniform_colors,
-                                 Bool want_smooth_colors,
-                                 Bool want_bright_colors,
-                                 void (*hack_init) (ModeInfo *),
-                                 void (*hack_draw) (ModeInfo *),
-                                 void (*hack_reshape) (ModeInfo *, int, int),
-                                 void (*hack_free) (ModeInfo *));
+struct xlockmore_function_table {
+  const char *progclass;
+  const char *defaults;
+  Bool want_writable_colors;
+  enum { color_scheme_default, color_scheme_uniform, 
+         color_scheme_smooth, color_scheme_bright }
+    desired_color_scheme;
+  void (*hack_init) (ModeInfo *);
+  void (*hack_draw) (ModeInfo *);
+  void (*hack_reshape) (ModeInfo *, int, int);
+  void (*hack_refresh) (ModeInfo *);
+  void (*hack_release) (ModeInfo *);
+  Bool (*hack_handle_events) (ModeInfo *, XEvent *);
+  ModeSpecOpt *opts;
+
+  size_t state_size;
+  void **state_array;
+  void (*hack_free_state) (ModeInfo *);
+  unsigned long live_displays, got_init;
+};
+
+#ifdef HAVE_JWXYZ
+# define XLOCKMORE_NUM_SCREENS \
+  (sizeof(((struct xlockmore_function_table *)0)->live_displays) * 8)
+#else
+# define XLOCKMORE_NUM_SCREENS 2 /* For DEBUG_PAIR. */
+#endif
 
 #endif /* __XLOCKMORE_INTERNAL_H__ */