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/* |
| 2 |
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* video_vosf.h - Video/graphics emulation, video on SEGV signals support |
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* |
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< |
* Basilisk II (C) 1997-2001 Christian Bauer |
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> |
* Basilisk II (C) 1997-2005 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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#ifndef VIDEO_VOSF_H |
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#define VIDEO_VOSF_H |
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|
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< |
// Note: this file is #include'd in video_x.cpp |
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> |
// Note: this file must be #include'd only in video_x.cpp |
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#ifdef ENABLE_VOSF |
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|
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– |
#include <fcntl.h> |
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– |
#include <sys/mman.h> |
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#include "sigsegv.h" |
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#include "vm_alloc.h" |
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#ifdef _WIN32 |
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#include "util_windows.h" |
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+ |
#endif |
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|
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#ifdef ENABLE_MON |
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< |
# include "mon.h" |
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> |
// Glue for SDL and X11 support |
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> |
#ifdef USE_SDL_VIDEO |
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> |
#define MONITOR_INIT SDL_monitor_desc &monitor |
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> |
#define VIDEO_DRV_WIN_INIT driver_window *drv |
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> |
#define VIDEO_DRV_DGA_INIT driver_fullscreen *drv |
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> |
#define VIDEO_DRV_LOCK_PIXELS if (SDL_MUSTLOCK(drv->s)) SDL_LockSurface(drv->s) |
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> |
#define VIDEO_DRV_UNLOCK_PIXELS if (SDL_MUSTLOCK(drv->s)) SDL_UnlockSurface(drv->s) |
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> |
#define VIDEO_DRV_DEPTH drv->s->format->BitsPerPixel |
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> |
#define VIDEO_DRV_WIDTH drv->s->w |
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> |
#define VIDEO_DRV_HEIGHT drv->s->h |
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> |
#define VIDEO_DRV_ROW_BYTES drv->s->pitch |
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#else |
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> |
#ifdef SHEEPSHAVER |
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> |
#define MONITOR_INIT /* nothing */ |
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> |
#define VIDEO_DRV_WIN_INIT /* nothing */ |
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> |
#define VIDEO_DRV_DGA_INIT /* nothing */ |
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> |
#define VIDEO_DRV_WINDOW the_win |
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> |
#define VIDEO_DRV_GC the_gc |
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> |
#define VIDEO_DRV_IMAGE img |
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> |
#define VIDEO_DRV_HAVE_SHM have_shm |
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> |
#else |
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> |
#define MONITOR_INIT X11_monitor_desc &monitor |
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> |
#define VIDEO_DRV_WIN_INIT driver_window *drv |
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> |
#define VIDEO_DRV_DGA_INIT driver_dga *drv |
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> |
#define VIDEO_DRV_WINDOW drv->w |
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> |
#define VIDEO_DRV_GC drv->gc |
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> |
#define VIDEO_DRV_IMAGE drv->img |
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> |
#define VIDEO_DRV_HAVE_SHM drv->have_shm |
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> |
#endif |
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> |
#define VIDEO_DRV_LOCK_PIXELS /* nothing */ |
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> |
#define VIDEO_DRV_UNLOCK_PIXELS /* nothing */ |
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#define VIDEO_DRV_DEPTH VIDEO_DRV_IMAGE->depth |
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> |
#define VIDEO_DRV_WIDTH VIDEO_DRV_IMAGE->width |
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#define VIDEO_DRV_HEIGHT VIDEO_DRV_IMAGE->height |
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#define VIDEO_DRV_ROW_BYTES VIDEO_DRV_IMAGE->bytes_per_line |
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#endif |
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|
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// Variables for Video on SEGV support |
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static uint8 *the_host_buffer; // Host frame buffer in VOSF mode |
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static uint32 the_buffer_size; // Size of allocated the_buffer |
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> |
static uint8 *the_host_buffer; // Host frame buffer in VOSF mode |
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|
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struct ScreenPageInfo { |
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int top, bottom; // Mapping between this virtual page and Mac scanlines |
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}; |
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|
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struct ScreenInfo { |
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uintptr memBase; // Real start address |
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uintptr memStart; // Start address aligned to page boundary |
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uintptr memEnd; // Address of one-past-the-end of the screen |
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uint32 memLength; // Length of the memory addressed by the screen pages |
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|
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uint32 pageSize; // Size of a page |
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uintptr pageSize; // Size of a page |
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int pageBits; // Shift count to get the page number |
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uint32 pageCount; // Number of pages allocated to the screen |
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|
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bool dirty; // Flag: set if the frame buffer was touched |
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bool very_dirty; // Flag: set if the frame buffer was completely modified (e.g. colormap changes) |
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char * dirtyPages; // Table of flags set if page was altered |
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ScreenPageInfo * pageInfo; // Table of mappings page -> Mac scanlines |
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}; |
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#define PFLAG_CLEAR_ALL do { \ |
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PFLAG_CLEAR_RANGE(0, mainBuffer.pageCount); \ |
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mainBuffer.dirty = false; \ |
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mainBuffer.very_dirty = false; \ |
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} while (0) |
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|
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#define PFLAG_SET_VERY_DIRTY do { \ |
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mainBuffer.very_dirty = true; \ |
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} while (0) |
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|
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// Set the following macro definition to 1 if your system |
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#endif |
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} |
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|
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static int zero_fd = -1; |
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|
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#ifdef HAVE_PTHREADS |
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> |
#ifdef HAVE_SPINLOCKS |
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> |
static spinlock_t vosf_lock = SPIN_LOCK_UNLOCKED; // Mutex to protect frame buffer (dirtyPages in fact) |
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> |
#define LOCK_VOSF spin_lock(&vosf_lock) |
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> |
#define UNLOCK_VOSF spin_unlock(&vosf_lock) |
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> |
#elif defined(_WIN32) |
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> |
static mutex_t vosf_lock; // Mutex to protect frame buffer (dirtyPages in fact) |
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> |
#define LOCK_VOSF vosf_lock.lock(); |
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#define UNLOCK_VOSF vosf_lock.unlock(); |
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> |
#elif defined(HAVE_PTHREADS) |
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static pthread_mutex_t vosf_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer (dirtyPages in fact) |
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#define LOCK_VOSF pthread_mutex_lock(&vosf_lock); |
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#define UNLOCK_VOSF pthread_mutex_unlock(&vosf_lock); |
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return l; |
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} |
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|
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// Extend size to page boundary |
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static uint32 page_extend(uint32 size) |
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{ |
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const uint32 page_size = vm_get_page_size(); |
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const uint32 page_mask = page_size - 1; |
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return (size + page_mask) & ~page_mask; |
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} |
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|
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|
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/* |
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* Initialize mainBuffer structure |
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> |
* Check if VOSF acceleration is profitable on this platform |
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*/ |
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|
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static bool video_init_buffer(void) |
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{ |
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if (use_vosf) { |
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const uint32 page_size = getpagesize(); |
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const uint32 page_mask = page_size - 1; |
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|
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mainBuffer.memBase = (uintptr) the_buffer; |
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// Align the frame buffer on page boundary |
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mainBuffer.memStart = (uintptr)((((unsigned long) the_buffer) + page_mask) & ~page_mask); |
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< |
mainBuffer.memLength = the_buffer_size; |
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< |
mainBuffer.memEnd = mainBuffer.memStart + mainBuffer.memLength; |
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< |
|
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< |
mainBuffer.pageSize = page_size; |
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< |
mainBuffer.pageCount = (mainBuffer.memLength + page_mask)/mainBuffer.pageSize; |
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< |
mainBuffer.pageBits = log_base_2(mainBuffer.pageSize); |
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< |
|
| 177 |
< |
if (mainBuffer.dirtyPages) { |
| 178 |
< |
free(mainBuffer.dirtyPages); |
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< |
mainBuffer.dirtyPages = NULL; |
| 180 |
< |
} |
| 212 |
> |
const int VOSF_PROFITABLE_TRIES = 3; // Make 3 attempts for full screen update |
| 213 |
> |
const int VOSF_PROFITABLE_THRESHOLD = 16667; // 60 Hz |
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|
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< |
mainBuffer.dirtyPages = (char *) malloc(mainBuffer.pageCount + 2); |
| 215 |
> |
static bool video_vosf_profitable(void) |
| 216 |
> |
{ |
| 217 |
> |
int64 durations[VOSF_PROFITABLE_TRIES]; |
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> |
int mean_duration = 0; |
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|
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< |
if (mainBuffer.pageInfo) { |
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< |
free(mainBuffer.pageInfo); |
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< |
mainBuffer.pageInfo = NULL; |
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> |
for (int i = 0; i < VOSF_PROFITABLE_TRIES; i++) { |
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> |
uint64 start = GetTicks_usec(); |
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> |
for (int p = 0; p < mainBuffer.pageCount; p++) { |
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> |
uint8 *addr = (uint8 *)(mainBuffer.memStart + (p * mainBuffer.pageSize)); |
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> |
addr[0] = 0; // Trigger Screen_fault_handler() |
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} |
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< |
|
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< |
mainBuffer.pageInfo = (ScreenPageInfo *) malloc(mainBuffer.pageCount * sizeof(ScreenPageInfo)); |
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< |
|
| 191 |
< |
if ((mainBuffer.dirtyPages == 0) || (mainBuffer.pageInfo == 0)) |
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< |
return false; |
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< |
|
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< |
mainBuffer.dirty = false; |
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> |
int64 duration = GetTicks_usec() - start; |
| 227 |
> |
mean_duration += duration; |
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> |
durations[i] = duration; |
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|
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PFLAG_CLEAR_ALL; |
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< |
// Safety net to insure the loops in the update routines will terminate |
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< |
// See a discussion in <video_vosf.h> for further details |
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< |
PFLAG_CLEAR(mainBuffer.pageCount); |
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< |
PFLAG_SET(mainBuffer.pageCount+1); |
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< |
|
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< |
uint32 a = 0; |
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< |
for (int i = 0; i < mainBuffer.pageCount; i++) { |
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< |
int y1 = a / VideoMonitor.mode.bytes_per_row; |
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< |
if (y1 >= VideoMonitor.mode.y) |
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< |
y1 = VideoMonitor.mode.y - 1; |
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< |
|
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< |
int y2 = (a + mainBuffer.pageSize) / VideoMonitor.mode.bytes_per_row; |
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< |
if (y2 >= VideoMonitor.mode.y) |
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< |
y2 = VideoMonitor.mode.y - 1; |
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< |
|
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< |
mainBuffer.pageInfo[i].top = y1; |
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< |
mainBuffer.pageInfo[i].bottom = y2; |
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< |
|
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< |
a += mainBuffer.pageSize; |
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< |
if (a > mainBuffer.memLength) |
| 217 |
< |
a = mainBuffer.memLength; |
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< |
} |
| 219 |
< |
|
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< |
// We can now write-protect the frame buffer |
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> |
mainBuffer.dirty = false; |
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if (vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ) != 0) |
| 233 |
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return false; |
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} |
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+ |
|
| 236 |
+ |
mean_duration /= VOSF_PROFITABLE_TRIES; |
| 237 |
+ |
D(bug("Triggered %d screen faults in %ld usec on average\n", mainBuffer.pageCount, mean_duration)); |
| 238 |
+ |
return (mean_duration < (VOSF_PROFITABLE_THRESHOLD * (frame_skip ? frame_skip : 1))); |
| 239 |
+ |
} |
| 240 |
+ |
|
| 241 |
+ |
|
| 242 |
+ |
/* |
| 243 |
+ |
* Initialize the VOSF system (mainBuffer structure, SIGSEGV handler) |
| 244 |
+ |
*/ |
| 245 |
+ |
|
| 246 |
+ |
static bool video_vosf_init(MONITOR_INIT) |
| 247 |
+ |
{ |
| 248 |
+ |
VIDEO_MODE_INIT_MONITOR; |
| 249 |
+ |
|
| 250 |
+ |
const uintptr page_size = vm_get_page_size(); |
| 251 |
+ |
const uintptr page_mask = page_size - 1; |
| 252 |
+ |
|
| 253 |
+ |
// Round up frame buffer base to page boundary |
| 254 |
+ |
mainBuffer.memStart = (((uintptr) the_buffer) + page_mask) & ~page_mask; |
| 255 |
+ |
|
| 256 |
+ |
// The frame buffer size shall already be aligned to page boundary (use page_extend) |
| 257 |
+ |
mainBuffer.memLength = the_buffer_size; |
| 258 |
+ |
|
| 259 |
+ |
mainBuffer.pageSize = page_size; |
| 260 |
+ |
mainBuffer.pageBits = log_base_2(mainBuffer.pageSize); |
| 261 |
+ |
mainBuffer.pageCount = (mainBuffer.memLength + page_mask)/mainBuffer.pageSize; |
| 262 |
+ |
|
| 263 |
+ |
// The "2" more bytes requested are a safety net to insure the |
| 264 |
+ |
// loops in the update routines will terminate. |
| 265 |
+ |
// See "How can we deal with array overrun conditions ?" hereunder for further details. |
| 266 |
+ |
mainBuffer.dirtyPages = (char *) malloc(mainBuffer.pageCount + 2); |
| 267 |
+ |
if (mainBuffer.dirtyPages == NULL) |
| 268 |
+ |
return false; |
| 269 |
+ |
|
| 270 |
+ |
PFLAG_CLEAR_ALL; |
| 271 |
+ |
PFLAG_CLEAR(mainBuffer.pageCount); |
| 272 |
+ |
PFLAG_SET(mainBuffer.pageCount+1); |
| 273 |
+ |
|
| 274 |
+ |
// Allocate and fill in pageInfo with start and end (inclusive) row in number of bytes |
| 275 |
+ |
mainBuffer.pageInfo = (ScreenPageInfo *) malloc(mainBuffer.pageCount * sizeof(ScreenPageInfo)); |
| 276 |
+ |
if (mainBuffer.pageInfo == NULL) |
| 277 |
+ |
return false; |
| 278 |
+ |
|
| 279 |
+ |
uint32 a = 0; |
| 280 |
+ |
for (unsigned i = 0; i < mainBuffer.pageCount; i++) { |
| 281 |
+ |
unsigned y1 = a / VIDEO_MODE_ROW_BYTES; |
| 282 |
+ |
if (y1 >= VIDEO_MODE_Y) |
| 283 |
+ |
y1 = VIDEO_MODE_Y - 1; |
| 284 |
+ |
|
| 285 |
+ |
unsigned y2 = (a + mainBuffer.pageSize) / VIDEO_MODE_ROW_BYTES; |
| 286 |
+ |
if (y2 >= VIDEO_MODE_Y) |
| 287 |
+ |
y2 = VIDEO_MODE_Y - 1; |
| 288 |
+ |
|
| 289 |
+ |
mainBuffer.pageInfo[i].top = y1; |
| 290 |
+ |
mainBuffer.pageInfo[i].bottom = y2; |
| 291 |
+ |
|
| 292 |
+ |
a += mainBuffer.pageSize; |
| 293 |
+ |
if (a > mainBuffer.memLength) |
| 294 |
+ |
a = mainBuffer.memLength; |
| 295 |
+ |
} |
| 296 |
+ |
|
| 297 |
+ |
// We can now write-protect the frame buffer |
| 298 |
+ |
if (vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ) != 0) |
| 299 |
+ |
return false; |
| 300 |
+ |
|
| 301 |
+ |
// The frame buffer is sane, i.e. there is no write to it yet |
| 302 |
+ |
mainBuffer.dirty = false; |
| 303 |
|
return true; |
| 304 |
|
} |
| 305 |
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|
| 306 |
|
|
| 307 |
|
/* |
| 308 |
< |
* Page-aligned memory allocation |
| 308 |
> |
* Deinitialize VOSF system |
| 309 |
|
*/ |
| 310 |
|
|
| 311 |
< |
// Extend size to page boundary |
| 233 |
< |
static uint32 page_extend(uint32 size) |
| 311 |
> |
static void video_vosf_exit(void) |
| 312 |
|
{ |
| 313 |
< |
const uint32 page_size = getpagesize(); |
| 314 |
< |
const uint32 page_mask = page_size - 1; |
| 315 |
< |
return (size + page_mask) & ~page_mask; |
| 313 |
> |
if (mainBuffer.pageInfo) { |
| 314 |
> |
free(mainBuffer.pageInfo); |
| 315 |
> |
mainBuffer.pageInfo = NULL; |
| 316 |
> |
} |
| 317 |
> |
if (mainBuffer.dirtyPages) { |
| 318 |
> |
free(mainBuffer.dirtyPages); |
| 319 |
> |
mainBuffer.dirtyPages = NULL; |
| 320 |
> |
} |
| 321 |
|
} |
| 322 |
|
|
| 323 |
< |
// Screen fault handler |
| 324 |
< |
static bool screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
| 323 |
> |
|
| 324 |
> |
/* |
| 325 |
> |
* Screen fault handler |
| 326 |
> |
*/ |
| 327 |
> |
|
| 328 |
> |
bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
| 329 |
|
{ |
| 243 |
– |
D(bug("screen_fault_handler: ADDR=0x%08X from IP=0x%08X\n", fault_address, fault_instruction)); |
| 330 |
|
const uintptr addr = (uintptr)fault_address; |
| 331 |
|
|
| 332 |
|
/* Someone attempted to write to the frame buffer. Make it writeable |
| 333 |
< |
* now so that the data could actually be written. It will be made |
| 333 |
> |
* now so that the data could actually be written to. It will be made |
| 334 |
|
* read-only back in one of the screen update_*() functions. |
| 335 |
|
*/ |
| 336 |
< |
if ((addr >= mainBuffer.memStart) && (addr < mainBuffer.memEnd)) { |
| 337 |
< |
const int page = (addr - mainBuffer.memStart) >> mainBuffer.pageBits; |
| 252 |
< |
caddr_t page_ad = (caddr_t)(addr & -mainBuffer.pageSize); |
| 336 |
> |
if (((uintptr)addr - mainBuffer.memStart) < mainBuffer.memLength) { |
| 337 |
> |
const int page = ((uintptr)addr - mainBuffer.memStart) >> mainBuffer.pageBits; |
| 338 |
|
LOCK_VOSF; |
| 339 |
|
PFLAG_SET(page); |
| 340 |
< |
vm_protect((char *)page_ad, mainBuffer.pageSize, VM_PAGE_READ | VM_PAGE_WRITE); |
| 340 |
> |
vm_protect((char *)(addr & -mainBuffer.pageSize), mainBuffer.pageSize, VM_PAGE_READ | VM_PAGE_WRITE); |
| 341 |
|
mainBuffer.dirty = true; |
| 342 |
|
UNLOCK_VOSF; |
| 343 |
|
return true; |
| 344 |
|
} |
| 345 |
|
|
| 346 |
|
/* Otherwise, we don't know how to handle the fault, let it crash */ |
| 262 |
– |
fprintf(stderr, "do_handle_screen_fault: unhandled address 0x%08X", addr); |
| 263 |
– |
if (fault_instruction != SIGSEGV_INVALID_PC) |
| 264 |
– |
fprintf(stderr, " [IP=0x%08X]", fault_instruction); |
| 265 |
– |
fprintf(stderr, "\n"); |
| 266 |
– |
#if EMULATED_68K |
| 267 |
– |
uaecptr nextpc; |
| 268 |
– |
extern void m68k_dumpstate(uaecptr *nextpc); |
| 269 |
– |
m68k_dumpstate(&nextpc); |
| 270 |
– |
#endif |
| 271 |
– |
#ifdef ENABLE_MON |
| 272 |
– |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
| 273 |
– |
mon(3, arg); |
| 274 |
– |
QuitEmulator(); |
| 275 |
– |
#endif |
| 347 |
|
return false; |
| 348 |
|
} |
| 349 |
|
|
| 350 |
+ |
|
| 351 |
|
/* |
| 352 |
|
* Update display for Windowed mode and VOSF |
| 353 |
|
*/ |
| 354 |
|
|
| 283 |
– |
// From video_blit.cpp |
| 284 |
– |
extern void (*Screen_blit)(uint8 * dest, const uint8 * source, uint32 length); |
| 285 |
– |
extern bool Screen_blitter_init(XVisualInfo * visual_info, bool native_byte_order); |
| 286 |
– |
|
| 355 |
|
/* How can we deal with array overrun conditions ? |
| 356 |
|
|
| 357 |
|
The state of the framebuffer pages that have been touched are maintained |
| 385 |
|
than pageCount. |
| 386 |
|
*/ |
| 387 |
|
|
| 388 |
< |
static inline void update_display_window_vosf(void) |
| 388 |
> |
static void update_display_window_vosf(VIDEO_DRV_WIN_INIT) |
| 389 |
|
{ |
| 390 |
+ |
VIDEO_MODE_INIT; |
| 391 |
+ |
|
| 392 |
|
int page = 0; |
| 393 |
|
for (;;) { |
| 394 |
< |
const int first_page = find_next_page_set(page); |
| 394 |
> |
const unsigned first_page = find_next_page_set(page); |
| 395 |
|
if (first_page >= mainBuffer.pageCount) |
| 396 |
|
break; |
| 397 |
|
|
| 407 |
|
const int y1 = mainBuffer.pageInfo[first_page].top; |
| 408 |
|
const int y2 = mainBuffer.pageInfo[page - 1].bottom; |
| 409 |
|
const int height = y2 - y1 + 1; |
| 340 |
– |
|
| 341 |
– |
const int bytes_per_row = VideoMonitor.mode.bytes_per_row; |
| 342 |
– |
const int bytes_per_pixel = VideoMonitor.mode.bytes_per_row / VideoMonitor.mode.x; |
| 343 |
– |
int i = y1 * bytes_per_row, j; |
| 344 |
– |
|
| 345 |
– |
if (VideoMonitor.mode.depth == VDEPTH_1BIT) { |
| 410 |
|
|
| 411 |
< |
// Update the_host_buffer and copy of the_buffer |
| 412 |
< |
for (j = y1; j <= y2; j++) { |
| 413 |
< |
Screen_blit(the_host_buffer + i, the_buffer + i, VideoMonitor.mode.x >> 3); |
| 414 |
< |
i += bytes_per_row; |
| 415 |
< |
} |
| 416 |
< |
|
| 417 |
< |
} else { |
| 418 |
< |
|
| 419 |
< |
// Update the_host_buffer and copy of the_buffer |
| 356 |
< |
for (j = y1; j <= y2; j++) { |
| 357 |
< |
Screen_blit(the_host_buffer + i, the_buffer + i, bytes_per_pixel * VideoMonitor.mode.x); |
| 358 |
< |
i += bytes_per_row; |
| 359 |
< |
} |
| 411 |
> |
// Update the_host_buffer |
| 412 |
> |
VIDEO_DRV_LOCK_PIXELS; |
| 413 |
> |
const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES; |
| 414 |
> |
const int dst_bytes_per_row = VIDEO_DRV_ROW_BYTES; |
| 415 |
> |
int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j; |
| 416 |
> |
for (j = y1; j <= y2; j++) { |
| 417 |
> |
Screen_blit(the_host_buffer + i2, the_buffer + i1, src_bytes_per_row); |
| 418 |
> |
i1 += src_bytes_per_row; |
| 419 |
> |
i2 += dst_bytes_per_row; |
| 420 |
|
} |
| 421 |
+ |
VIDEO_DRV_UNLOCK_PIXELS; |
| 422 |
|
|
| 423 |
< |
if (have_shm) |
| 424 |
< |
XShmPutImage(x_display, the_win, the_gc, img, 0, y1, 0, y1, VideoMonitor.mode.x, height, 0); |
| 423 |
> |
#ifdef USE_SDL_VIDEO |
| 424 |
> |
SDL_UpdateRect(drv->s, 0, y1, VIDEO_MODE_X, height); |
| 425 |
> |
#else |
| 426 |
> |
if (VIDEO_DRV_HAVE_SHM) |
| 427 |
> |
XShmPutImage(x_display, VIDEO_DRV_WINDOW, VIDEO_DRV_GC, VIDEO_DRV_IMAGE, 0, y1, 0, y1, VIDEO_MODE_X, height, 0); |
| 428 |
|
else |
| 429 |
< |
XPutImage(x_display, the_win, the_gc, img, 0, y1, 0, y1, VideoMonitor.mode.x, height); |
| 429 |
> |
XPutImage(x_display, VIDEO_DRV_WINDOW, VIDEO_DRV_GC, VIDEO_DRV_IMAGE, 0, y1, 0, y1, VIDEO_MODE_X, height); |
| 430 |
> |
#endif |
| 431 |
|
} |
| 367 |
– |
|
| 432 |
|
mainBuffer.dirty = false; |
| 433 |
|
} |
| 434 |
|
|
| 435 |
|
|
| 436 |
|
/* |
| 437 |
|
* Update display for DGA mode and VOSF |
| 438 |
< |
* (only in Direct Addressing mode) |
| 438 |
> |
* (only in Real or Direct Addressing mode) |
| 439 |
|
*/ |
| 440 |
|
|
| 441 |
|
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
| 442 |
< |
static inline void update_display_dga_vosf(void) |
| 442 |
> |
static void update_display_dga_vosf(VIDEO_DRV_DGA_INIT) |
| 443 |
|
{ |
| 444 |
< |
int page = 0; |
| 444 |
> |
VIDEO_MODE_INIT; |
| 445 |
> |
|
| 446 |
> |
// Compute number of bytes per row, take care to virtual screens |
| 447 |
> |
const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES; |
| 448 |
> |
const int dst_bytes_per_row = TrivialBytesPerRow(VIDEO_MODE_X, DepthModeForPixelDepth(VIDEO_DRV_DEPTH)); |
| 449 |
> |
const int scr_bytes_per_row = VIDEO_DRV_ROW_BYTES; |
| 450 |
> |
assert(dst_bytes_per_row <= scr_bytes_per_row); |
| 451 |
> |
const int scr_bytes_left = scr_bytes_per_row - dst_bytes_per_row; |
| 452 |
> |
|
| 453 |
> |
// Full screen update requested? |
| 454 |
> |
if (mainBuffer.very_dirty) { |
| 455 |
> |
PFLAG_CLEAR_ALL; |
| 456 |
> |
vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ); |
| 457 |
> |
memcpy(the_buffer_copy, the_buffer, VIDEO_MODE_ROW_BYTES * VIDEO_MODE_Y); |
| 458 |
> |
VIDEO_DRV_LOCK_PIXELS; |
| 459 |
> |
int i1 = 0, i2 = 0; |
| 460 |
> |
for (int j = 0; j < VIDEO_MODE_Y; j++) { |
| 461 |
> |
Screen_blit(the_host_buffer + i2, the_buffer + i1, src_bytes_per_row); |
| 462 |
> |
i1 += src_bytes_per_row; |
| 463 |
> |
i2 += scr_bytes_per_row; |
| 464 |
> |
} |
| 465 |
> |
#ifdef USE_SDL_VIDEO |
| 466 |
> |
SDL_UpdateRect(drv->s, 0, 0, VIDEO_MODE_X, VIDEO_MODE_Y); |
| 467 |
> |
#endif |
| 468 |
> |
VIDEO_DRV_UNLOCK_PIXELS; |
| 469 |
> |
return; |
| 470 |
> |
} |
| 471 |
> |
|
| 472 |
> |
// Setup partial blitter (use 64-pixel wide chunks) |
| 473 |
> |
const int n_pixels = 64; |
| 474 |
> |
const int n_chunks = VIDEO_MODE_X / n_pixels; |
| 475 |
> |
const int n_pixels_left = VIDEO_MODE_X - (n_chunks * n_pixels); |
| 476 |
> |
const int src_chunk_size = src_bytes_per_row / n_chunks; |
| 477 |
> |
const int dst_chunk_size = dst_bytes_per_row / n_chunks; |
| 478 |
> |
const int src_chunk_size_left = src_bytes_per_row - (n_chunks * src_chunk_size); |
| 479 |
> |
const int dst_chunk_size_left = dst_bytes_per_row - (n_chunks * dst_chunk_size); |
| 480 |
> |
|
| 481 |
> |
int page = 0, last_scanline = -1; |
| 482 |
|
for (;;) { |
| 483 |
< |
const int first_page = find_next_page_set(page); |
| 483 |
> |
const unsigned first_page = find_next_page_set(page); |
| 484 |
|
if (first_page >= mainBuffer.pageCount) |
| 485 |
|
break; |
| 486 |
|
|
| 491 |
|
const int32 offset = first_page << mainBuffer.pageBits; |
| 492 |
|
const uint32 length = (page - first_page) << mainBuffer.pageBits; |
| 493 |
|
vm_protect((char *)mainBuffer.memStart + offset, length, VM_PAGE_READ); |
| 494 |
< |
|
| 495 |
< |
// I am sure that y2 >= y1 and depth != 1 |
| 496 |
< |
const int y1 = mainBuffer.pageInfo[first_page].top; |
| 497 |
< |
const int y2 = mainBuffer.pageInfo[page - 1].bottom; |
| 498 |
< |
|
| 499 |
< |
const int bytes_per_row = VideoMonitor.mode.bytes_per_row; |
| 500 |
< |
const int bytes_per_pixel = VideoMonitor.mode.bytes_per_row / VideoMonitor.mode.x; |
| 501 |
< |
int i, j; |
| 502 |
< |
|
| 503 |
< |
// Check for first column from left and first column |
| 504 |
< |
// from right that have changed |
| 505 |
< |
int x1 = VideoMonitor.mode.x * bytes_per_pixel - 1; |
| 506 |
< |
for (j = y1; j <= y2; j++) { |
| 507 |
< |
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
| 508 |
< |
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
| 509 |
< |
for (i = 0; i < x1; i++) { |
| 510 |
< |
if (p1[i] != p2[i]) { |
| 511 |
< |
x1 = i; |
| 512 |
< |
break; |
| 494 |
> |
|
| 495 |
> |
// Optimized for scanlines, don't process overlapping lines again |
| 496 |
> |
int y1 = mainBuffer.pageInfo[first_page].top; |
| 497 |
> |
int y2 = mainBuffer.pageInfo[page - 1].bottom; |
| 498 |
> |
if (y1 <= last_scanline && ++y1 >= VIDEO_MODE_Y) |
| 499 |
> |
continue; |
| 500 |
> |
if (y2 <= last_scanline && ++y2 >= VIDEO_MODE_Y) |
| 501 |
> |
continue; |
| 502 |
> |
last_scanline = y2; |
| 503 |
> |
|
| 504 |
> |
// Update the_host_buffer and copy of the_buffer, one line at a time |
| 505 |
> |
int i1 = y1 * src_bytes_per_row; |
| 506 |
> |
int i2 = y1 * scr_bytes_per_row; |
| 507 |
> |
#ifdef USE_SDL_VIDEO |
| 508 |
> |
int bbi = 0; |
| 509 |
> |
SDL_Rect bb[3] = { |
| 510 |
> |
{ VIDEO_MODE_X, y1, 0, 0 }, |
| 511 |
> |
{ VIDEO_MODE_X, -1, 0, 0 }, |
| 512 |
> |
{ VIDEO_MODE_X, -1, 0, 0 } |
| 513 |
> |
}; |
| 514 |
> |
#endif |
| 515 |
> |
VIDEO_DRV_LOCK_PIXELS; |
| 516 |
> |
for (int j = y1; j <= y2; j++) { |
| 517 |
> |
for (int i = 0; i < n_chunks; i++) { |
| 518 |
> |
if (memcmp(the_buffer_copy + i1, the_buffer + i1, src_chunk_size) != 0) { |
| 519 |
> |
memcpy(the_buffer_copy + i1, the_buffer + i1, src_chunk_size); |
| 520 |
> |
Screen_blit(the_host_buffer + i2, the_buffer + i1, src_chunk_size); |
| 521 |
> |
#ifdef USE_SDL_VIDEO |
| 522 |
> |
const int x = i * n_pixels; |
| 523 |
> |
if (x < bb[bbi].x) { |
| 524 |
> |
if (bb[bbi].w) |
| 525 |
> |
bb[bbi].w += bb[bbi].x - x; |
| 526 |
> |
else |
| 527 |
> |
bb[bbi].w = n_pixels; |
| 528 |
> |
bb[bbi].x = x; |
| 529 |
> |
} |
| 530 |
> |
else if (x >= bb[bbi].x + bb[bbi].w) |
| 531 |
> |
bb[bbi].w = x + n_pixels - bb[bbi].x; |
| 532 |
> |
#endif |
| 533 |
|
} |
| 534 |
+ |
i1 += src_chunk_size; |
| 535 |
+ |
i2 += dst_chunk_size; |
| 536 |
|
} |
| 537 |
< |
} |
| 538 |
< |
x1 /= bytes_per_pixel; |
| 539 |
< |
|
| 540 |
< |
int x2 = x1 * bytes_per_pixel; |
| 541 |
< |
for (j = y2; j >= y1; j--) { |
| 542 |
< |
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
| 543 |
< |
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
| 544 |
< |
for (i = VideoMonitor.mode.x * bytes_per_pixel - 1; i > x2; i--) { |
| 545 |
< |
if (p1[i] != p2[i]) { |
| 546 |
< |
x2 = i; |
| 547 |
< |
break; |
| 537 |
> |
if (src_chunk_size_left && dst_chunk_size_left) { |
| 538 |
> |
if (memcmp(the_buffer_copy + i1, the_buffer + i1, src_chunk_size_left) != 0) { |
| 539 |
> |
memcpy(the_buffer_copy + i1, the_buffer + i1, src_chunk_size_left); |
| 540 |
> |
Screen_blit(the_host_buffer + i2, the_buffer + i1, src_chunk_size_left); |
| 541 |
> |
} |
| 542 |
> |
i1 += src_chunk_size_left; |
| 543 |
> |
i2 += dst_chunk_size_left; |
| 544 |
> |
#ifdef USE_SDL_VIDEO |
| 545 |
> |
const int x = n_chunks * n_pixels; |
| 546 |
> |
if (x < bb[bbi].x) { |
| 547 |
> |
if (bb[bbi].w) |
| 548 |
> |
bb[bbi].w += bb[bbi].x - x; |
| 549 |
> |
else |
| 550 |
> |
bb[bbi].w = n_pixels_left; |
| 551 |
> |
bb[bbi].x = x; |
| 552 |
|
} |
| 553 |
+ |
else if (x >= bb[bbi].x + bb[bbi].w) |
| 554 |
+ |
bb[bbi].w = x + n_pixels_left - bb[bbi].x; |
| 555 |
+ |
#endif |
| 556 |
|
} |
| 557 |
+ |
i2 += scr_bytes_left; |
| 558 |
+ |
#ifdef USE_SDL_VIDEO |
| 559 |
+ |
bb[bbi].h++; |
| 560 |
+ |
if (bb[bbi].w && (j == y1 || j == y2 - 1 || j == y2)) { |
| 561 |
+ |
bbi++; |
| 562 |
+ |
assert(bbi <= 3); |
| 563 |
+ |
if (j != y2) |
| 564 |
+ |
bb[bbi].y = j + 1; |
| 565 |
+ |
} |
| 566 |
+ |
#endif |
| 567 |
|
} |
| 568 |
< |
x2 /= bytes_per_pixel; |
| 569 |
< |
|
| 570 |
< |
// Update the_host_buffer and copy of the_buffer |
| 571 |
< |
// There should be at least one pixel to copy |
| 432 |
< |
const int width = x2 - x1 + 1; |
| 433 |
< |
i = y1 * bytes_per_row + x1 * bytes_per_pixel; |
| 434 |
< |
for (j = y1; j <= y2; j++) { |
| 435 |
< |
Screen_blit(the_host_buffer + i, the_buffer + i, bytes_per_pixel * width); |
| 436 |
< |
memcpy(the_buffer_copy + i, the_buffer + i, bytes_per_pixel * width); |
| 437 |
< |
i += bytes_per_row; |
| 438 |
< |
} |
| 568 |
> |
#ifdef USE_SDL_VIDEO |
| 569 |
> |
SDL_UpdateRects(drv->s, bbi, bb); |
| 570 |
> |
#endif |
| 571 |
> |
VIDEO_DRV_UNLOCK_PIXELS; |
| 572 |
|
} |
| 573 |
|
mainBuffer.dirty = false; |
| 574 |
|
} |
