| 24 |
|
// Note: this file must be #include'd only in video_x.cpp |
| 25 |
|
#ifdef ENABLE_VOSF |
| 26 |
|
|
| 27 |
– |
#include <fcntl.h> |
| 28 |
– |
#include <sys/mman.h> |
| 27 |
|
#include "sigsegv.h" |
| 28 |
|
#include "vm_alloc.h" |
| 29 |
+ |
#ifdef _WIN32 |
| 30 |
+ |
#include "util_windows.h" |
| 31 |
+ |
#endif |
| 32 |
|
|
| 33 |
|
// Glue for SDL and X11 support |
| 34 |
|
#ifdef USE_SDL_VIDEO |
| 157 |
|
static spinlock_t vosf_lock = SPIN_LOCK_UNLOCKED; // Mutex to protect frame buffer (dirtyPages in fact) |
| 158 |
|
#define LOCK_VOSF spin_lock(&vosf_lock) |
| 159 |
|
#define UNLOCK_VOSF spin_unlock(&vosf_lock) |
| 160 |
+ |
#elif defined(_WIN32) |
| 161 |
+ |
static mutex_t vosf_lock; // Mutex to protect frame buffer (dirtyPages in fact) |
| 162 |
+ |
#define LOCK_VOSF vosf_lock.lock(); |
| 163 |
+ |
#define UNLOCK_VOSF vosf_lock.unlock(); |
| 164 |
|
#elif defined(HAVE_PTHREADS) |
| 165 |
|
static pthread_mutex_t vosf_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer (dirtyPages in fact) |
| 166 |
|
#define LOCK_VOSF pthread_mutex_lock(&vosf_lock); |
| 184 |
|
// Extend size to page boundary |
| 185 |
|
static uint32 page_extend(uint32 size) |
| 186 |
|
{ |
| 187 |
< |
const uint32 page_size = getpagesize(); |
| 187 |
> |
const uint32 page_size = vm_page_size(); |
| 188 |
|
const uint32 page_mask = page_size - 1; |
| 189 |
|
return (size + page_mask) & ~page_mask; |
| 190 |
|
} |
| 191 |
|
|
| 192 |
|
|
| 193 |
|
/* |
| 194 |
+ |
* Check if VOSF acceleration is profitable on this platform |
| 195 |
+ |
*/ |
| 196 |
+ |
|
| 197 |
+ |
const int VOSF_PROFITABLE_TRIES = 3; // Make 3 attempts for full screen update |
| 198 |
+ |
const int VOSF_PROFITABLE_THRESHOLD = 16667; // 60 Hz |
| 199 |
+ |
|
| 200 |
+ |
static bool video_vosf_profitable(void) |
| 201 |
+ |
{ |
| 202 |
+ |
int64 durations[VOSF_PROFITABLE_TRIES]; |
| 203 |
+ |
int mean_duration = 0; |
| 204 |
+ |
|
| 205 |
+ |
for (int i = 0; i < VOSF_PROFITABLE_TRIES; i++) { |
| 206 |
+ |
uint64 start = GetTicks_usec(); |
| 207 |
+ |
for (int p = 0; p < mainBuffer.pageCount; p++) { |
| 208 |
+ |
uint8 *addr = (uint8 *)(mainBuffer.memStart + (p * mainBuffer.pageSize)); |
| 209 |
+ |
addr[0] = 0; // Trigger Screen_fault_handler() |
| 210 |
+ |
} |
| 211 |
+ |
int64 duration = GetTicks_usec() - start; |
| 212 |
+ |
mean_duration += duration; |
| 213 |
+ |
durations[i] = duration; |
| 214 |
+ |
|
| 215 |
+ |
PFLAG_CLEAR_ALL; |
| 216 |
+ |
mainBuffer.dirty = false; |
| 217 |
+ |
if (vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ) != 0) |
| 218 |
+ |
return false; |
| 219 |
+ |
} |
| 220 |
+ |
|
| 221 |
+ |
mean_duration /= VOSF_PROFITABLE_TRIES; |
| 222 |
+ |
D(bug("Triggered %d screen faults in %ld usec on average\n", mainBuffer.pageCount, mean_duration)); |
| 223 |
+ |
return (mean_duration < (VOSF_PROFITABLE_THRESHOLD * (frame_skip ? frame_skip : 1))); |
| 224 |
+ |
} |
| 225 |
+ |
|
| 226 |
+ |
|
| 227 |
+ |
/* |
| 228 |
|
* Initialize the VOSF system (mainBuffer structure, SIGSEGV handler) |
| 229 |
|
*/ |
| 230 |
|
|
| 231 |
|
static bool video_vosf_init(MONITOR_INIT) |
| 232 |
|
{ |
| 233 |
< |
VIDEO_MODE_INIT; |
| 233 |
> |
VIDEO_MODE_INIT_MONITOR; |
| 234 |
|
|
| 235 |
< |
const uintptr page_size = getpagesize(); |
| 235 |
> |
const uintptr page_size = vm_page_size(); |
| 236 |
|
const uintptr page_mask = page_size - 1; |
| 237 |
|
|
| 238 |
|
// Round up frame buffer base to page boundary |
| 395 |
|
|
| 396 |
|
VIDEO_DRV_LOCK_PIXELS; |
| 397 |
|
|
| 398 |
< |
if (VIDEO_MODE_DEPTH < VIDEO_DEPTH_8BIT) { |
| 398 |
> |
if ((int)VIDEO_MODE_DEPTH < VIDEO_DEPTH_8BIT) { |
| 399 |
|
|
| 400 |
|
// Update the_host_buffer and copy of the_buffer |
| 401 |
|
const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES; |
