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/* |
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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) 1997-2004 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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// 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_INIT driver_window *drv |
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#define VIDEO_DRV_ROW_BYTES drv->s->pitch |
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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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#else |
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#ifdef SHEEPSHAVER |
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#define MONITOR_INIT /* nothing */ |
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#define VIDEO_DRV_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_INIT driver_window *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_ROW_BYTES VIDEO_DRV_IMAGE->bytes_per_line |
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#endif |
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// Variables for Video on SEGV support |
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#endif |
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} |
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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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// 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 = getpagesize(); |
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const uint32 page_size = vm_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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* Initialize the VOSF system (mainBuffer structure, SIGSEGV handler) |
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* Check if VOSF acceleration is profitable on this platform |
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*/ |
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static bool screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction); |
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const int VOSF_PROFITABLE_TRIES = 3; // Make 3 attempts for full screen update |
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const int VOSF_PROFITABLE_THRESHOLD = 16667; // 60 Hz |
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|
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static bool video_vosf_init(void) |
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static bool video_vosf_profitable(void) |
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{ |
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const uintptr page_size = getpagesize(); |
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int64 durations[VOSF_PROFITABLE_TRIES]; |
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int mean_duration = 0; |
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|
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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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int64 duration = GetTicks_usec() - start; |
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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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mainBuffer.dirty = false; |
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if (vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ) != 0) |
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return false; |
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} |
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|
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mean_duration /= VOSF_PROFITABLE_TRIES; |
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D(bug("Triggered %d screen faults in %ld usec on average\n", mainBuffer.pageCount, mean_duration)); |
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return (mean_duration < (VOSF_PROFITABLE_THRESHOLD * (frame_skip ? frame_skip : 1))); |
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} |
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|
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|
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/* |
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* Initialize the VOSF system (mainBuffer structure, SIGSEGV handler) |
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*/ |
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|
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static bool video_vosf_init(MONITOR_INIT) |
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{ |
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VIDEO_MODE_INIT_MONITOR; |
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|
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const uintptr page_size = vm_page_size(); |
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const uintptr page_mask = page_size - 1; |
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// Round up frame buffer base to page boundary |
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uint32 a = 0; |
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for (unsigned i = 0; i < mainBuffer.pageCount; i++) { |
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unsigned 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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unsigned 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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unsigned y1 = a / VIDEO_MODE_ROW_BYTES; |
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if (y1 >= VIDEO_MODE_Y) |
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y1 = VIDEO_MODE_Y - 1; |
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|
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unsigned y2 = (a + mainBuffer.pageSize) / VIDEO_MODE_ROW_BYTES; |
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if (y2 >= VIDEO_MODE_Y) |
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y2 = VIDEO_MODE_Y - 1; |
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mainBuffer.pageInfo[i].top = y1; |
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mainBuffer.pageInfo[i].bottom = y2; |
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if (vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ) != 0) |
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return false; |
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// Initialize the handler for SIGSEGV |
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if (!sigsegv_install_handler(screen_fault_handler)) |
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return false; |
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|
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// The frame buffer is sane, i.e. there is no write to it yet |
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mainBuffer.dirty = false; |
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return true; |
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* Screen fault handler |
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*/ |
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static bool screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
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bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
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{ |
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// D(bug("screen_fault_handler: ADDR=%p from IP=%p\n", fault_address, fault_instruction)); |
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const uintptr addr = (uintptr)fault_address; |
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/* Someone attempted to write to the frame buffer. Make it writeable |
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} |
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/* Otherwise, we don't know how to handle the fault, let it crash */ |
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fprintf(stderr, "do_handle_screen_fault: unhandled address %p", fault_address); |
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if (fault_instruction != SIGSEGV_INVALID_PC) |
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fprintf(stderr, " [IP=%p]", fault_instruction); |
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fprintf(stderr, "\n"); |
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#if EMULATED_68K |
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uaecptr nextpc; |
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extern void m68k_dumpstate(uaecptr *nextpc); |
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m68k_dumpstate(&nextpc); |
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#endif |
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VideoQuitFullScreen(); |
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#ifdef ENABLE_MON |
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char *arg[4] = {"mon", "-m", "-r", NULL}; |
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mon(3, arg); |
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QuitEmulator(); |
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#endif |
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return false; |
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} |
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* Update display for Windowed mode and VOSF |
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*/ |
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// From video_blit.cpp |
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extern void (*Screen_blit)(uint8 * dest, const uint8 * source, uint32 length); |
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extern bool Screen_blitter_init(XVisualInfo * visual_info, bool native_byte_order, video_depth mac_depth); |
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extern uint32 ExpandMap[256]; |
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|
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/* How can we deal with array overrun conditions ? |
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The state of the framebuffer pages that have been touched are maintained |
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than pageCount. |
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*/ |
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static inline void update_display_window_vosf(driver_window *drv) |
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> |
static inline void update_display_window_vosf(VIDEO_DRV_INIT) |
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{ |
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VIDEO_MODE_INIT; |
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|
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int page = 0; |
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for (;;) { |
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const unsigned first_page = find_next_page_set(page); |
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const int y1 = mainBuffer.pageInfo[first_page].top; |
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const int y2 = mainBuffer.pageInfo[page - 1].bottom; |
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const int height = y2 - y1 + 1; |
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|
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if (VideoMonitor.mode.depth < VDEPTH_8BIT) { |
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|
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> |
VIDEO_DRV_LOCK_PIXELS; |
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|
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if ((int)VIDEO_MODE_DEPTH < VIDEO_DEPTH_8BIT) { |
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// Update the_host_buffer and copy of the_buffer |
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const int src_bytes_per_row = VideoMonitor.mode.bytes_per_row; |
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const int dst_bytes_per_row = drv->img->bytes_per_line; |
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const int pixels_per_byte = VideoMonitor.mode.x / src_bytes_per_row; |
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> |
const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES; |
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const int dst_bytes_per_row = VIDEO_DRV_ROW_BYTES; |
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> |
const int pixels_per_byte = VIDEO_MODE_X / src_bytes_per_row; |
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int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j; |
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for (j = y1; j <= y2; j++) { |
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< |
Screen_blit(the_host_buffer + i2, the_buffer + i1, VideoMonitor.mode.x / pixels_per_byte); |
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Screen_blit(the_host_buffer + i2, the_buffer + i1, VIDEO_MODE_X / pixels_per_byte); |
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i1 += src_bytes_per_row; |
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i2 += dst_bytes_per_row; |
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} |
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} else { |
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|
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// Update the_host_buffer and copy of the_buffer |
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const int src_bytes_per_row = VideoMonitor.mode.bytes_per_row; |
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const int dst_bytes_per_row = drv->img->bytes_per_line; |
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const int bytes_per_pixel = src_bytes_per_row / VideoMonitor.mode.x; |
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> |
const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES; |
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> |
const int dst_bytes_per_row = VIDEO_DRV_ROW_BYTES; |
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const int bytes_per_pixel = src_bytes_per_row / VIDEO_MODE_X; |
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int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j; |
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for (j = y1; j <= y2; j++) { |
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Screen_blit(the_host_buffer + i2, the_buffer + i1, bytes_per_pixel * VideoMonitor.mode.x); |
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> |
Screen_blit(the_host_buffer + i2, the_buffer + i1, bytes_per_pixel * VIDEO_MODE_X); |
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i1 += src_bytes_per_row; |
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i2 += dst_bytes_per_row; |
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} |
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} |
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|
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< |
if (drv->have_shm) |
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< |
XShmPutImage(x_display, drv->w, drv->gc, drv->img, 0, y1, 0, y1, VideoMonitor.mode.x, height, 0); |
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> |
VIDEO_DRV_UNLOCK_PIXELS; |
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> |
|
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> |
#ifdef USE_SDL_VIDEO |
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> |
SDL_UpdateRect(drv->s, 0, y1, VIDEO_MODE_X, height); |
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> |
#else |
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> |
if (VIDEO_DRV_HAVE_SHM) |
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> |
XShmPutImage(x_display, VIDEO_DRV_WINDOW, VIDEO_DRV_GC, VIDEO_DRV_IMAGE, 0, y1, 0, y1, VIDEO_MODE_X, height, 0); |
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else |
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< |
XPutImage(x_display, drv->w, drv->gc, drv->img, 0, y1, 0, y1, VideoMonitor.mode.x, height); |
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> |
XPutImage(x_display, VIDEO_DRV_WINDOW, VIDEO_DRV_GC, VIDEO_DRV_IMAGE, 0, y1, 0, y1, VIDEO_MODE_X, height); |
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> |
#endif |
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} |
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mainBuffer.dirty = false; |
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} |
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#if REAL_ADDRESSING || DIRECT_ADDRESSING |
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static inline void update_display_dga_vosf(void) |
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{ |
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+ |
VIDEO_MODE_INIT; |
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+ |
|
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int page = 0; |
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for (;;) { |
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const unsigned first_page = find_next_page_set(page); |
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const int y1 = mainBuffer.pageInfo[first_page].top; |
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const int y2 = mainBuffer.pageInfo[page - 1].bottom; |
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|
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< |
const int bytes_per_row = VideoMonitor.mode.bytes_per_row; |
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< |
const int bytes_per_pixel = VideoMonitor.mode.bytes_per_row / VideoMonitor.mode.x; |
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> |
const int bytes_per_row = VIDEO_MODE_ROW_BYTES; |
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> |
const int bytes_per_pixel = VIDEO_MODE_ROW_BYTES / VIDEO_MODE_X; |
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int i, j; |
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|
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// Check for first column from left and first column |
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// from right that have changed |
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< |
int x1 = VideoMonitor.mode.x * bytes_per_pixel - 1; |
| 474 |
> |
int x1 = VIDEO_MODE_X * bytes_per_pixel - 1; |
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for (j = y1; j <= y2; j++) { |
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uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
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uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
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for (j = y2; j >= y1; j--) { |
| 489 |
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uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
| 490 |
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uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
| 491 |
< |
for (i = VideoMonitor.mode.x * bytes_per_pixel - 1; i > x2; i--) { |
| 491 |
> |
for (i = VIDEO_MODE_X * bytes_per_pixel - 1; i > x2; i--) { |
| 492 |
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if (p1[i] != p2[i]) { |
| 493 |
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x2 = i; |
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break; |
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|
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// Update the_host_buffer and copy of the_buffer |
| 501 |
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// There should be at least one pixel to copy |
| 502 |
+ |
VIDEO_DRV_LOCK_PIXELS; |
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const int width = x2 - x1 + 1; |
| 504 |
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i = y1 * bytes_per_row + x1 * bytes_per_pixel; |
| 505 |
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for (j = y1; j <= y2; j++) { |
| 507 |
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memcpy(the_buffer_copy + i, the_buffer + i, bytes_per_pixel * width); |
| 508 |
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i += bytes_per_row; |
| 509 |
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} |
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+ |
VIDEO_DRV_UNLOCK_PIXELS; |
| 511 |
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} |
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|
mainBuffer.dirty = false; |
| 513 |
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} |
