changeset 981:a193a851b5e3

add double buffering frame device
author root@henri.cr.ie.u-ryukyu.ac.jp
date Thu, 30 Sep 2010 23:54:08 +0900
parents 4ce73df9ac61
children b29547a5b85b
files Renderer/Engine/Makefile.cell Renderer/Engine/ViewerDevice.h Renderer/Engine/fb.h Renderer/Engine/main.cc Renderer/Engine/ps3fb/cp_fb.cc Renderer/Engine/ps3fb/cp_fb.h Renderer/Engine/ps3fb/cp_vt.cc Renderer/Engine/ps3fb/cp_vt.h Renderer/Engine/viewer.cc Renderer/Engine/viewerFB.cc Renderer/Engine/viewerPS3.cc Renderer/Engine/viewerPS3.h Renderer/Engine/viewer_types.h old/framebuffer/Makefile
diffstat 14 files changed, 736 insertions(+), 5 deletions(-) [+]
line wrap: on
line diff
--- a/Renderer/Engine/Makefile.cell	Thu Sep 30 22:50:35 2010 +0900
+++ b/Renderer/Engine/Makefile.cell	Thu Sep 30 23:54:08 2010 +0900
@@ -1,6 +1,6 @@
 include ./Makefile.def
 
-SRCS_TMP = $(wildcard *.cc) $(wildcard Application/*.cc)
+SRCS_TMP = $(wildcard *.cc) $(wildcard Application/*.cc) $(wildcard ps3fb/*.cc)
 SRCS_EXCLUDE =   # 
 SRCS = $(filter-out $(SRCS_EXCLUDE),$(SRCS_TMP))
 OBJS = $(SRCS:.cc=.o)
@@ -13,7 +13,7 @@
 
 LIBS += -lCellManager -lspe2 -lpthread
 
-CFLAGS += `sdl-config --cflags` `xml2-config --cflags`
+CFLAGS += -Drestrict=__restrict__ `sdl-config --cflags` `xml2-config --cflags`
 LIBS   += `sdl-config --libs` -lSDL_image -lGL `xml2-config --libs`
 
 .SUFFIXES: .cc .o
--- a/Renderer/Engine/ViewerDevice.h	Thu Sep 30 22:50:35 2010 +0900
+++ b/Renderer/Engine/ViewerDevice.h	Thu Sep 30 23:54:08 2010 +0900
@@ -17,6 +17,7 @@
 
     /* override function */
     virtual Uint32 *video_init(TaskManager *manager, int bpp, int width, int height) = 0;
+    virtual Uint32 * flip_screen(Uint32 *v) { return v; }
     virtual void clean_pixels() = 0;
     virtual void clear_screen() = 0;
     virtual void free_device() = 0;    
--- a/Renderer/Engine/fb.h	Thu Sep 30 22:50:35 2010 +0900
+++ b/Renderer/Engine/fb.h	Thu Sep 30 23:54:08 2010 +0900
@@ -12,6 +12,7 @@
 #include <sys/ioctl.h>
 #include <stdlib.h>
 #include <iostream>
+#include "types.h"
 using namespace std;
 
 
@@ -23,7 +24,7 @@
 
 typedef struct screen_info {
 	int xres,yres,vbpp,line_len;
-	char *fbptr;
+	uint32_t *fbptr[2];
 } ScreenInfo , *ScreenInfoPtr;
 
 
--- a/Renderer/Engine/main.cc	Thu Sep 30 22:50:35 2010 +0900
+++ b/Renderer/Engine/main.cc	Thu Sep 30 23:54:08 2010 +0900
@@ -3,6 +3,7 @@
 #include "viewerSDL.h"
 #include "viewerFB.h"
 #include "viewerGL.h"
+#include "viewerPS3.h"
 #include "Application.h"
 
 /* prototype */
@@ -59,6 +60,8 @@
 		vtype = VTYPE_FB;
 	    } else if  (strcmp(argv[i+1], "gl") == 0) {
 	      vtype = VTYPE_GL;
+	    } else if  (strcmp(argv[i+1], "ps3") == 0) {
+	      vtype = VTYPE_PS3;
 	    }
 	    i++;
 	}
@@ -76,6 +79,9 @@
 	screen = new Viewer(manager, dev, bpp, width, height, spenum);
     } else if (vtype == VTYPE_GL) {
         screen = new ViewerGL(manager, bpp, width, height, spenum);
+    } else if (vtype == VTYPE_PS3) {
+        ViewerDevice *dev = new ViewerPS3();
+	screen = new Viewer(manager, dev, bpp, width, height, spenum);
     } else {
 	ViewerDevice *dev = new ViewerSDL(manager);
 	screen = new Viewer(manager, dev, bpp, width, height, spenum);
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Renderer/Engine/ps3fb/cp_fb.cc	Thu Sep 30 23:54:08 2010 +0900
@@ -0,0 +1,205 @@
+// cp_fb.c 
+//
+// Copyright (c) 2006, Mike Acton <macton@cellperformance.com>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
+// documentation files (the "Software"), to deal in the Software without restriction, including without
+// limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so, subject to the following
+// conditions:
+//
+// The above copyright notice and this permission notice shall be included in all copies or substantial
+// portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
+// EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+// AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
+// OR OTHER DEALINGS IN THE SOFTWARE.
+
+// NOTES:
+// From Geert Uytterhoeven 2007-01-26 04:50:44, 
+//      http://patchwork.ozlabs.org/linuxppc/patch?id=9143
+//
+//     "As the actual graphics hardware cannot be accessed directly by Linux,
+//     ps3fb uses a virtual frame buffer in main memory. The actual screen image is
+//     copied to graphics memory by the GPU on every vertical blank, by making a
+//     hypervisor call."
+//
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <string.h>
+#include <errno.h>
+#include <stdint.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <linux/fb.h>
+#include <sys/time.h>
+#include <asm/ps3fb.h>
+#include <linux/vt.h>
+#include <linux/kd.h>
+#include "cp_fb.h"
+
+static inline const char*
+select_error_str( int existing_error, const char* const existing_error_str, int new_error, const char* const new_error_str )
+{
+  // Only report the first error found - any error that follows is probably just a cascading effect.
+  const char* error_str = (char*)( (~(intptr_t)existing_error & (intptr_t)new_error & (intptr_t)new_error_str)
+                                 |  ((intptr_t)existing_error & (intptr_t)existing_error_str) );
+
+  return (error_str);
+}
+
+int
+cp_fb_open( cp_fb* const restrict fb )
+{
+    const char*    error_str      = NULL;
+    int            error          = 0;
+
+    // Open framebuffer device
+
+    const int   fb_fd             = open( "/dev/fb0", O_RDWR );
+    const int   open_fb_error     = (fb_fd >> ((sizeof(int)<<3)-1));
+    const char* open_fb_error_str = "Could not open /dev/fb0. Check permissions.";
+  
+    error_str = select_error_str( error, error_str, open_fb_error, open_fb_error_str );
+    error     = error | open_fb_error;
+
+    // Check for vsync
+
+    struct fb_vblank vblank;
+
+    const int   get_vblank_error     = ioctl(fb_fd, FBIOGET_VBLANK, (unsigned long)&vblank);
+    const char* get_vblank_error_str = "Could not get vblank info (FBIOGET_VBLANK)";
+
+    error_str = select_error_str( error, error_str, get_vblank_error, get_vblank_error_str );
+    error     = error | get_vblank_error;
+
+    const int   has_vsync            = vblank.flags & FB_VBLANK_HAVE_VSYNC;
+    const int   has_vsync_error      = (~(-has_vsync|has_vsync))>>((sizeof(int)<<3)-1);
+    const char* has_vsync_error_str  = "No vsync available (FB_VBLANK_HAVE_VSYNC)";
+
+    error_str = select_error_str( error, error_str, has_vsync_error, has_vsync_error_str );
+    error     = error | has_vsync_error;
+
+    // Get screen resolution and frame count
+
+    struct ps3fb_ioctl_res res;
+
+    const int   screeninfo_error     = ioctl(fb_fd, PS3FB_IOCTL_SCREENINFO, (unsigned long)&res);
+    const char* screeninfo_error_str = "Could not get screen info (PS3_IOCTL_SCREENINFO)";
+
+    error_str = select_error_str( error, error_str, screeninfo_error, screeninfo_error_str );
+    error     = error | screeninfo_error;
+
+    const int   has_at_least_double_buffer           = (res.num_frames - 2) >> ((sizeof(res.num_frames)<<3)-1);
+    const int   has_at_least_double_buffer_error     = ~has_at_least_double_buffer;
+    const char* has_at_least_double_buffer_error_str = "Could not get screen info (PS3_IOCTL_SCREENINFO)";
+
+    error_str = select_error_str( error, error_str, has_at_least_double_buffer_error, has_at_least_double_buffer_error_str );
+    error     = error | has_at_least_double_buffer_error;
+
+    const uint32_t bpp                      = 4; // This is fixed for PS3 fb, and there's not a test for it.
+    const uint32_t frame_size               = res.xres * res.yres * bpp;
+    const uint32_t double_buffer_frame_size = frame_size * 2;
+
+    // const uint32_t frame_top_margin_size    = res.xres * res.yoff * bpp;
+    // const uint32_t frame_bottom_margin_size = frame_top_margin_size;
+    // const uint32_t frame_size               = frame_full_size; /* - ( frame_top_margin_size + frame_bottom_margin_size ); */
+    // const uint32_t double_buffer_frame_size = frame_size * 2;
+
+    const uintptr_t fb_addr           = (uintptr_t)mmap(NULL, double_buffer_frame_size, PROT_READ|PROT_WRITE, MAP_SHARED, fb_fd, 0);
+    const int       fb_mmap_error     = fb_addr >> ((sizeof(uintptr_t)<<3)-1);
+    const char*     fb_mmap_error_str = "Could not get mmap frame buffer";
+
+    error_str = select_error_str( error, error_str, fb_mmap_error, fb_mmap_error_str );
+    error     = error | fb_mmap_error;
+
+    // Take control of frame buffer from kernel
+    ioctl(fb_fd, PS3FB_IOCTL_ON, 0);
+
+    // yoff is the number of lines that cannot be copied to the CRT before the vblank. For the most part this represents
+    // unusable frame buffer space. While it is possible to draw to the area if you draw in the opposite frame buffer's
+    // offset space, which will (due to poor draw timing by ps3fb) be the thing that is actually drawn, it's very 
+    // difficult to work with in practice. So:
+    //
+    //     (1)  The y offset area will be treated as "off limits".
+    //     (2)  An equivalent border will be created at the bottom, so the frame looks balanced even though it is
+    //          not entirely full screen. 
+
+    // xoff is the number of lines that cannot be copied to the CRT before the hblank.
+    // Similar to the y offset space, the x offset space is displayed on the wrong (previous) line. So:
+    //
+    //     (1)  The x offset area will be treated as "off limits".
+    //     (2)  An equivalent border will be created at the right, so the frame looks balanced even though it is
+    //          not entirely full screen. 
+
+    uintptr_t draw_start_addr = fb_addr;
+    uintptr_t draw_next_addr  = draw_start_addr + ( res.yres * res.xres * bpp );
+    uintptr_t drawable_h      = res.yres - ( 2 * res.yoff );
+    uintptr_t drawable_w      = res.xres - ( 2 * res.xoff );
+
+    // xoff is the number of lines that cannot be copied to the CRT before the hblank. This area is much easier to use. 
+    // Similar to the y offset space, the x offset space is displayed on the wrong (previous) line. So:
+    // In principle, it is possible to steal back the x offset space by shifting back the line address to the 
+    // start of the border of the previous line. Like so:
+    //
+    //     (1)  One additional line will be taken from the height so the a complete horizontal line can be started
+    //          early.
+    //     (2)  The frame buffer address returned in cp_fb will be offset by (xres-xoff) in order for the remaining
+    //          space to represent a rectangular area of drawable memory.
+    //
+    //     i.e. 
+    //     uintptr_t draw_start_addr = fb_addr + ( ( res.xres - res.xoff ) * bpp );
+    //     uintptr_t draw_next_addr  = draw_start_addr + ( res.yres * res.xres * bpp );
+    //     uintptr_t drawable_h      = res.yres - 1 - ( 2 * res.yoff );
+    //     uintptr_t drawable_w      = res.xres;
+    //
+    //     But I wouldn't recommend it, since on some CRTs the effect of this would be that the frame does not appear
+    //     square.
+
+    fb->stride        = res.xres;
+    fb->w             = drawable_w;
+    fb->h             = drawable_h;
+    fb->fd            = fb_fd;
+    fb->start_addr    = fb_addr;
+    fb->size          = double_buffer_frame_size;
+    fb->draw_addr[0]  = draw_start_addr;
+    fb->draw_addr[1]  = draw_next_addr;
+
+    // Clear out the whole buffer. Any unused space is black. It's also convinient to start with a cleared frame
+    // buffer for the user.
+
+    memset((void*)fb_addr, 0x00, double_buffer_frame_size );
+
+    return (error);
+}
+
+void
+cp_fb_close( const cp_fb* const restrict fb )
+{
+    // Give frame buffer control back to the kernel
+    ioctl(fb->fd, PS3FB_IOCTL_OFF, 0);
+
+    munmap( (void*)fb->start_addr, fb->size );
+
+    close(fb->fd);
+}
+
+void
+cp_fb_wait_vsync( cp_fb* const restrict fb )
+{
+    unsigned long crt = 0;
+
+    ioctl(fb->fd, FBIO_WAITFORVSYNC, &crt );
+}
+
+void
+cp_fb_flip( cp_fb* const restrict fb, unsigned long field_ndx )
+{
+    ioctl(fb->fd, PS3FB_IOCTL_FSEL,  &field_ndx );
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Renderer/Engine/ps3fb/cp_fb.h	Thu Sep 30 23:54:08 2010 +0900
@@ -0,0 +1,51 @@
+// cp_fb.h 
+//
+// Copyright (c) 2006, Mike Acton <macton@cellperformance.com>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
+// documentation files (the "Software"), to deal in the Software without restriction, including without
+// limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so, subject to the following
+// conditions:
+//
+// The above copyright notice and this permission notice shall be included in all copies or substantial
+// portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
+// EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+// AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
+// OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef CP_FB_H
+#define CP_FB_H
+
+#if defined(__cplusplus)
+extern "C" 
+{
+#endif
+
+typedef struct cp_fb cp_fb;
+
+struct cp_fb
+{
+    uint32_t  w;
+    uint32_t  h;
+    uint32_t  stride;
+    uintptr_t start_addr;
+    uintptr_t draw_addr[2];
+    uint32_t  size;
+    int       fd;
+};
+
+int  cp_fb_open( cp_fb* const restrict fb );
+void cp_fb_close( const cp_fb* const restrict fb );
+void cp_fb_wait_vsync( cp_fb* const restrict fb );
+void cp_fb_flip( cp_fb* const restrict fb, unsigned long field_ndx );
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* CP_FB_H */
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Renderer/Engine/ps3fb/cp_vt.cc	Thu Sep 30 23:54:08 2010 +0900
@@ -0,0 +1,285 @@
+// cp_vt.c 
+//
+// Copyright (c) 2006, Mike Acton <macton@cellperformance.com>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
+// documentation files (the "Software"), to deal in the Software without restriction, including without
+// limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so, subject to the following
+// conditions:
+//
+// The above copyright notice and this permission notice shall be included in all copies or substantial
+// portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
+// EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+// AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
+// OR OTHER DEALINGS IN THE SOFTWARE.
+
+// NOTES:
+// From http://www.linuxjournal.com/article/2597
+//
+//     "Console ttys are used when the keyboard and monitor are directly connected to the system without running
+//     the X Window System. Since you can have several virtual consoles, the devices are tty0 through tty63. In
+//     theory you can have 64 virtual consoles, but most people use only a few. The device /dev/console is
+//     identical to tty0 and is needed for historical reasons. If your system lets you log in on consoles 1
+//     through 6, then when you run X Windows System, X uses console 7, so you'll need /dev/tty1 through /dev/
+//     tty7 on your system. I recommend having files up through /dev/tty12. For more information on using
+//     virtual consoles, see the article Keyboards, Consoles and VT Cruising by John Fisk in the November 1996
+//     issue of Linux Journal"
+
+#include <stdio.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <linux/vt.h>
+#include <linux/kd.h>
+#include "cp_vt.h"
+
+
+static inline const char*
+select_error_str( int existing_error, const char* const existing_error_str, int new_error, const char* const new_error_str )
+{
+  // Only report the first error found - any error that follows is probably just a cascading effect.
+  const char* error_str = (char*)( (~(intptr_t)existing_error & (intptr_t)new_error & (intptr_t)new_error_str)
+                                 |  ((intptr_t)existing_error & (intptr_t)existing_error_str) );
+
+  return (error_str);
+}
+
+
+int
+cp_vt_open_graphics(cp_vt* restrict vt)
+{
+  const char*    error_str      = NULL;
+  int            error          = 0;
+
+  // Open the current tty
+ 
+  // From http://tldp.org/HOWTO/Text-Terminal-HOWTO-6.html#ss6.3
+  // (An excellent overview by David S. Lawyer)
+  //
+  //     "In Linux the PC monitor is usually called the console and has several device special files associated
+  //     with it: vc/0 (tty0), vc/1 (tty1), vc/2 (tty2), etc. When you log in you are on vc/1. To go to vc/2
+  //     (on the same screen) press down the 2 keys Alt(left)-F3. For vc/3 use Left Alt-F3, etc. These (vc/1,
+  //     vc/2, vc/3, etc.) are called "virtual terminals". vc/0 (tty0) is just an alias for the current virtual
+  //     terminal and it's where messages from the system are sent. Thus messages from the system will be seen
+  //     on the console (monitor) regardless of which virtual terminal it is displaying."
+
+  const int   cur_tty                = open( "/dev/tty0", O_RDWR );
+  const int   open_cur_tty_error     = (cur_tty >> ((sizeof(int)*8)-1));
+  const char* open_cur_tty_error_str = "Could not open /dev/tty0. Check permissions.";
+  
+  error_str = select_error_str( error, error_str, open_cur_tty_error, open_cur_tty_error_str );
+  error     = error | open_cur_tty_error;
+
+  // From: http://www.linuxjournal.com/article/2783
+  // (A little out of date, but a nice primer.)
+  //
+  //     "VT_GETSTATE returns the state of all VT's in the kernel in the structure:
+  //
+  //         struct vt_stat {
+  //               ushort v_active; 
+  //               ushort v_signal; 
+  //               ushort v_state;
+  //          };
+  //
+  //      v_active        the currently active VT 
+  //      v_state         mask of all the opened VT's
+  //
+  //      v_active holds the number of the active VT (starting from 1), while v_state 
+  //      holds a mask where there is a 1 for each VT that has been opened by some process. 
+  //      Note that VT 0 is always opened in this scenario, since it refers to the current VT.
+  //
+  //      Bugs:
+  //      The v_signal member is unsupported."
+
+  struct vt_stat  vts;
+
+  const int   get_state_error     = ioctl( cur_tty, VT_GETSTATE, &vts );
+  const char* get_state_error_str = "VT_GETSTATE failed on /dev/tty0";
+
+  error_str = select_error_str( error, error_str, get_state_error, get_state_error_str );
+  error     = error | get_state_error;
+
+  vt->prev_tty_ndx = vts.v_active;
+
+  // From: http://opensolaris.org/os/project/vconsole/vt.7i.txt
+  // (Close enough to Linux and a pretty good source of documentation.)
+  //
+  // "VT_OPENQRY
+  //     This call is used to find an available VT.    The argu-
+  //     ment to the    ioctl is a pointer to an integer.  The integer
+  //     will be filled in with the number of the first avail-
+  //     able VT that no other process has open (and    hence, is
+  //     available to be opened).  If there are no available
+  //     VTs, then -1 will be filled in."
+
+  const int   open_query_error     = ioctl( cur_tty, VT_OPENQRY, &vt->tty_ndx);
+  const char* open_query_error_str = "No open ttys available";
+
+  error_str = select_error_str( error, error_str, open_query_error, open_query_error_str );
+  error     = error | open_query_error;
+
+  const int   close_cur_tty_error     = close( cur_tty );
+  const char* close_cur_tty_error_str = "Could not close parent tty";
+
+  error_str = select_error_str( error, error_str, close_cur_tty_error, close_cur_tty_error_str );
+  error     = error | close_cur_tty_error;
+
+  char tty_file_name[11];
+
+  (void)snprintf( tty_file_name, 11, "/dev/tty%d", vt->tty_ndx );
+
+  const int   tty                = open( tty_file_name, O_RDWR );
+  const int   open_tty_error     = (cur_tty >> ((sizeof(int)*8)-1));
+  const char* open_tty_error_str = "Could not open tty";
+
+  error_str = select_error_str( error, error_str, open_tty_error, open_tty_error_str );
+  error     = error | open_tty_error;
+
+  vt->tty = tty;
+
+  // From: http://opensolaris.org/os/project/vconsole/vt.7i.txt
+  // (Close enough to Linux and a pretty good source of documentation.)
+  //
+  // "VT_ACTIVATE
+  //    This call has the effect of making the VT specified in
+  //    the argument the active VT. The VT manager will cause
+  //    a switch to occur in the same manner as if a hotkey had
+  //    initiated the switch.  If the specified VT is not open
+  //    or does not exist the call will fail and errno will be
+  //    set to ENXIO."
+  //
+  // "VT_WAITACTIVE
+  //    If the specified VT is already active, this call
+  //    returns immediately. Otherwise, it will sleep until
+  //    the specified VT becomes active, at which point it will
+  //    return."
+
+
+  const int   activate_tty_error     = ioctl( vt->tty, VT_ACTIVATE, vt->tty_ndx );
+  const char* activate_tty_error_str = "Could not activate tty";
+
+  error_str = select_error_str( error, error_str, activate_tty_error, activate_tty_error_str );
+  error     = error | activate_tty_error;
+
+  const int   waitactive_tty_error     = ioctl( vt->tty, VT_WAITACTIVE, vt->tty_ndx );
+  const char* waitactive_tty_error_str = "Could not switch to tty";
+
+  error_str = select_error_str( error, error_str, waitactive_tty_error, waitactive_tty_error_str );
+  error     = error | waitactive_tty_error;
+
+  // From: http://opensolaris.org/os/project/vconsole/vt.7i.txt
+  // (Close enough to Linux and a pretty good source of documentation.)
+  //
+  //  "KDSETMODE
+  //   This call is used to set the text/graphics mode to the VT.
+  //
+  //      KD_TEXT indicates that console text will be displayed on the screen
+  //      with this VT. Normally KD_TEXT is combined with VT_AUTO mode for
+  //      text console terminals, so that the console text display will
+  //      automatically be saved and restored on the hot key screen switches.
+  //
+  //      KD_GRAPHICS indicates that the user/application, usually Xserver,
+  //      will have direct control of the display for this VT in graphics
+  //      mode. Normally KD_GRAPHICS is combined with VT_PROCESS mode for
+  //      this VT indicating direct control of the display in graphics mode.
+  //      In this mode, all writes to this VT using the write system call are
+  //      ignored, and the user is responsible for saving and restoring the
+  //      display on the hot key screen switches."
+
+  // Save the current VT mode. This is most likely KD_TEXT.
+
+  const int   kdgetmode_error     = ioctl( vt->tty, KDGETMODE, &vt->prev_kdmode );
+  const char* kdgetmode_error_str = "Could not get mode for tty";
+
+  error_str = select_error_str( error, error_str, kdgetmode_error, kdgetmode_error_str );
+  error     = error | kdgetmode_error;
+  
+  // Set VT to GRAPHICS (user draw) mode
+
+  const int   kdsetmode_graphics_error     = ioctl( vt->tty, KDSETMODE, KD_GRAPHICS );
+  const char* kdsetmode_graphics_error_str = "Could not set graphics mode for tty";
+
+  error_str = select_error_str( error, error_str, kdsetmode_graphics_error, kdsetmode_graphics_error_str );
+  error     = error | kdsetmode_graphics_error;
+
+  //
+  // Not bothering with VT_PROCESS, VT_AUTO is fine for our purposes.
+  //
+ 
+  // If vt blanking is active, for example when running this program from a remote terminal, 
+  // setting KD_GRAPHICS will not disable the blanking. Reset to KD_TEXT from KD_GRAPHICS will
+  // force disable blanking. Then return to KD_GRAPHICS for drawing.
+  //
+  // Note: KD_TEXT (default) to KD_TEXT will do nothing, so blanking will not be disable unless
+  // the mode is changing. i.e. the initial set to KD_GRAPHICS above is useful.
+
+  const int   kdsetmode_text_error     = ioctl( vt->tty, KDSETMODE, KD_TEXT );
+  const char* kdsetmode_text_error_str = "Could not set text mode for tty";
+
+  error_str = select_error_str( error, error_str, kdsetmode_text_error, kdsetmode_text_error_str );
+  error     = error | kdsetmode_text_error;
+
+  const int   kdsetmode_graphics_reset_error     = ioctl( vt->tty, KDSETMODE, KD_GRAPHICS );
+  const char* kdsetmode_graphics_reset_error_str = "Could not reset graphics mode for tty";
+
+  error_str = select_error_str( error, error_str, kdsetmode_graphics_reset_error, kdsetmode_graphics_reset_error_str );
+  error     = error | kdsetmode_graphics_reset_error;
+
+  if ( error == -1 )
+  {
+      printf("ERROR: vt_graphics_open: %s\n",error_str);
+      return (-1);
+  }
+
+  return (0);
+}
+
+int
+cp_vt_close(cp_vt* restrict vt)
+{
+  const char*    error_str      = NULL;
+  int            error          = 0;
+
+  // Reset previous mode on tty (likely KD_TEXT)
+
+  const int   kdsetmode_error     = ioctl( vt->tty, KDSETMODE, vt->prev_kdmode );
+  const char* kdsetmode_error_str = "Could not reset previous mode for tty";
+
+  error_str = select_error_str( error, error_str, kdsetmode_error, kdsetmode_error_str );
+  error     = error | kdsetmode_error;
+
+  // Restore previous tty
+
+  const int   activate_tty_error     = ioctl( vt->tty, VT_ACTIVATE, vt->prev_tty_ndx );
+  const char* activate_tty_error_str = "Could not activate previous tty";
+
+  error_str = select_error_str( error, error_str, activate_tty_error, activate_tty_error_str );
+  error     = error | activate_tty_error;
+
+  const int   waitactive_tty_error     = ioctl( vt->tty, VT_WAITACTIVE, vt->prev_tty_ndx );
+  const char* waitactive_tty_error_str = "Could not switch to previous tty";
+
+  error_str = select_error_str( error, error_str, waitactive_tty_error, waitactive_tty_error_str );
+  error     = error | waitactive_tty_error;
+
+  // Close tty
+
+  const int   close_tty_error     = close( vt->tty );
+  const char* close_tty_error_str = "Could not close tty";
+
+  error_str = select_error_str( error, error_str, close_tty_error, close_tty_error_str );
+  error     = error | close_tty_error;
+
+  if ( error == -1 )
+  {
+      printf("ERROR: vt_close: %s\n",error_str);
+      return (-1);
+  }
+
+  return (0);
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Renderer/Engine/ps3fb/cp_vt.h	Thu Sep 30 23:54:08 2010 +0900
@@ -0,0 +1,45 @@
+// cp_vt.h 
+//
+// Copyright (c) 2006, Mike Acton <macton@cellperformance.com>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
+// documentation files (the "Software"), to deal in the Software without restriction, including without
+// limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so, subject to the following
+// conditions:
+//
+// The above copyright notice and this permission notice shall be included in all copies or substantial
+// portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
+// EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+// AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
+// OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef CP_VT_H
+#define CP_VT_H
+
+#if defined(__cplusplus)
+extern "C" 
+{
+#endif
+
+typedef struct cp_vt cp_vt;
+
+struct cp_vt
+{
+    int prev_tty_ndx;
+    int prev_kdmode;
+    int tty;
+    int tty_ndx;
+};
+
+int cp_vt_open_graphics(cp_vt* restrict vt);
+int cp_vt_close(cp_vt* restrict vt);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
--- a/Renderer/Engine/viewer.cc	Thu Sep 30 22:50:35 2010 +0900
+++ b/Renderer/Engine/viewer.cc	Thu Sep 30 23:54:08 2010 +0900
@@ -327,6 +327,7 @@
     }
 
     dev->clean_pixels();
+    pixels = dev->flip_screen(pixels);
 
     for (int i = 1; i <= spackList_length; i++) {
         spackList[i-1].reinit(i*split_screen_h);
--- a/Renderer/Engine/viewerFB.cc	Thu Sep 30 22:50:35 2010 +0900
+++ b/Renderer/Engine/viewerFB.cc	Thu Sep 30 23:54:08 2010 +0900
@@ -70,7 +70,7 @@
         info.yres = yres; 
         info.vbpp = vbpp;
         info.line_len = line_len;
-	info.fbptr = fbptr;
+	info.fbptr[0] = (uint32_t *)fbptr;
       
 	return info;
 	//munmap(fbptr,screensize);
@@ -107,7 +107,7 @@
     }
 
     screen_info = get_fbdev_addr();
-    Uint32 *pixels = (Uint32*) screen_info.fbptr;
+    Uint32 *pixels = screen_info.fbptr[0];
 
     if (pixels == 0) {
 	fprintf(stderr, "Cannot get frame buffer!\n");
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Renderer/Engine/viewerPS3.cc	Thu Sep 30 23:54:08 2010 +0900
@@ -0,0 +1,99 @@
+#include "viewerPS3.h"
+#include "fb.h"
+#include "types.h"
+#include "ps3fb/cp_vt.h"
+#include "ps3fb/cp_fb.h"
+#include <stdio.h>
+
+#define default_sdl_flag SDL_INIT_TIMER | SDL_INIT_JOYSTICK
+
+ViewerPS3::ViewerPS3() {}
+ViewerPS3::~ViewerPS3() {}
+
+#if defined(__linux__)
+
+#define DEVICE_NAME "/dev/fb0"
+#define DIV_BYTE 8
+
+ScreenInfo 
+ViewerPS3::get_fbdev_addr()
+{
+    ScreenInfo info;
+
+    cp_vt_open_graphics(&vt);
+    cp_fb_open(&fb);
+
+    info.xres = fb.w;
+    info.yres = fb.h; 
+    info.vbpp = 32;
+    info.fbptr[0] = (uint32_t *)fb.draw_addr[ 0 ];
+    info.fbptr[1] = (uint32_t *)fb.draw_addr[ 1 ];
+
+    return info;
+}
+
+#else /* !defined(__linux__) */
+ScreenInfo get_fbdev_addr(void) { 
+    ScreenInfo tmp = {0,0,0,0};
+    return tmp;
+}
+#endif /* defined(__linux__) */
+
+
+Uint32 *
+ViewerPS3::video_init(TaskManager *manager, int bpp, int width, int height)
+{
+    // Uint32 sdl_flag = default_sdl_flag |  SDL_INIT_VIDEO;
+    Uint32 sdl_flag = default_sdl_flag ;
+
+    if (SDL_Init(sdl_flag) < 0) {
+	fprintf(stderr,"Couldn't initialize SDL: %s\n",SDL_GetError());
+	exit(1);
+    }
+
+    screen_info = get_fbdev_addr();
+    uint32_t *pixels =  screen_info.fbptr[frame_ndx];
+
+    if (pixels == 0) {
+	fprintf(stderr, "Cannot get frame buffer!\n");
+    	pixels = (new Uint32[width*height*32/8]);
+    }
+    this->width = screen_info.xres;
+    this->height = screen_info.yres;
+    this->bpp = screen_info.vbpp;
+
+    return pixels;
+}
+
+void
+ViewerPS3::clean_pixels()
+{
+}
+
+void
+ViewerPS3::clear_screen()
+{
+}
+
+uint32_t *
+ViewerPS3::flip_screen(uint32_t *old)
+{
+        // At the vsync, the previous frame is finished sending to the CRT
+        cp_fb_wait_vsync( &fb );
+
+        // Send the frame just drawn to the CRT by the next vblank
+        cp_fb_flip( &fb, frame_ndx );
+
+        frame_ndx  = frame_ndx ^ 0x01;
+	return (uint32_t*)fb.draw_addr[ frame_ndx ];
+}
+
+
+void
+ViewerPS3::free_device()
+{
+    cp_vt_close(&vt);
+    cp_fb_close(&fb);
+}
+
+/* end */
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Renderer/Engine/viewerPS3.h	Thu Sep 30 23:54:08 2010 +0900
@@ -0,0 +1,33 @@
+#ifndef INCLUDED_VIEWER_PS3
+#define INCLUDED_VIEWER_PS3
+
+#include "fb.h"
+#include "types.h"
+#include "ps3fb/cp_vt.h"
+#include "ps3fb/cp_fb.h"
+
+#include "ViewerDevice.h"
+
+class ViewerPS3 : public ViewerDevice {
+public:
+    ViewerPS3(TaskManager *manager) {};
+    ViewerPS3();
+    virtual ~ViewerPS3();
+
+    ScreenInfo screen_info ;
+    cp_vt vt;
+    cp_fb fb;
+    uint32_t frame_ndx;
+
+    ScreenInfo get_fbdev_addr();
+
+    /* override function */
+    uint32_t *video_init(TaskManager *manager, int bpp, int width, int height);
+    void clean_pixels(void);
+    void clear_screen();
+    void free_device();
+    uint32_t* flip_screen(uint32_t *);
+
+};
+
+#endif
--- a/Renderer/Engine/viewer_types.h	Thu Sep 30 22:50:35 2010 +0900
+++ b/Renderer/Engine/viewer_types.h	Thu Sep 30 23:54:08 2010 +0900
@@ -13,6 +13,7 @@
 enum video_type {
     VTYPE_SDL,
     VTYPE_FB,
+    VTYPE_PS3,
     VTYPE_GL
 };
 
--- a/old/framebuffer/Makefile	Thu Sep 30 22:50:35 2010 +0900
+++ b/old/framebuffer/Makefile	Thu Sep 30 23:54:08 2010 +0900
@@ -6,3 +6,6 @@
 
 fb_test : fb_test.o  cp_fb.o cp_vt.o -lm
 	$(CC) -o  $@ $+
+
+clean:
+	rm -f fb_info fb_test *.o