mirror of
https://github.com/kanjitalk755/macemu.git
synced 2024-12-27 16:31:08 +00:00
- added direct and real addressing modes support
- added Video on SEGV signals support
This commit is contained in:
gbeauche
parent
fbabba29ee
commit
f882c34591
@ -52,6 +52,14 @@
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# include <sys/mman.h>
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#endif
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#ifdef ENABLE_VOSF
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# include <math.h> // log()
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# include <unistd.h>
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# include <signal.h>
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# include <fcntl.h>
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# include <sys/mman.h>
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#endif
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#include "cpu_emulation.h"
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#include "main.h"
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#include "adb.h"
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@ -154,6 +162,68 @@ static XF86VidModeModeInfo **x_video_modes; // Array of all available modes
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static int num_x_video_modes;
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#endif
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#ifdef ENABLE_VOSF
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static bool use_vosf = true; // Flag: VOSF enabled
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#else
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static const bool use_vosf = false; // Flag: VOSF enabled
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#endif
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#ifdef ENABLE_VOSF
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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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#endif
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#ifdef ENABLE_VOSF
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// Variables for Video on SEGV support (taken from the Win32 port)
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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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struct ScreenInfo {
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uint32 memBase; // Real start address
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uint32 memStart; // Start address aligned to page boundary
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uint32 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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uint32 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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uint8 * 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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static ScreenInfo mainBuffer;
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#define PFLAG_SET(page) mainBuffer.dirtyPages[page] = 1
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#define PFLAG_CLEAR(page) mainBuffer.dirtyPages[page] = 0
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#define PFLAG_ISSET(page) mainBuffer.dirtyPages[page]
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#define PFLAG_ISCLEAR(page) (mainBuffer.dirtyPages[page] == 0)
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#ifdef UNALIGNED_PROFITABLE
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# define PFLAG_ISCLEAR_4(page) (*((uint32 *)(mainBuffer.dirtyPages + page)) == 0)
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#else
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# define PFLAG_ISCLEAR_4(page) \
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(mainBuffer.dirtyPages[page ] == 0) \
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&& (mainBuffer.dirtyPages[page+1] == 0) \
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&& (mainBuffer.dirtyPages[page+2] == 0) \
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&& (mainBuffer.dirtyPages[page+3] == 0)
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#endif
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#define PFLAG_CLEAR_ALL memset(mainBuffer.dirtyPages, 0, mainBuffer.pageCount)
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#define PFLAG_SET_ALL memset(mainBuffer.dirtyPages, 1, mainBuffer.pageCount)
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static int zero_fd = -1;
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static bool Screen_fault_handler_init();
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static struct sigaction vosf_sa;
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#ifdef HAVE_PTHREADS
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static pthread_mutex_t Screen_draw_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer (dirtyPages in fact)
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#endif
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#endif
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// VideoRefresh function
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void VideoRefreshInit(void);
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static void (*video_refresh)(void);
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// Prototypes
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static void *redraw_func(void *arg);
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@ -167,6 +237,10 @@ extern Display *x_display;
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// From sys_unix.cpp
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extern void SysMountFirstFloppy(void);
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#ifdef ENABLE_VOSF
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# include "video_vosf.h"
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#endif
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/*
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* Initialization
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@ -175,7 +249,7 @@ extern void SysMountFirstFloppy(void);
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// Set VideoMonitor according to video mode
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void set_video_monitor(int width, int height, int bytes_per_row, bool native_byte_order)
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{
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#if !REAL_ADDRESSING
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#if !REAL_ADDRESSING && !DIRECT_ADDRESSING
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int layout = FLAYOUT_DIRECT;
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switch (depth) {
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case 1:
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@ -337,8 +411,20 @@ static bool init_window(int width, int height)
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img->bitmap_bit_order = MSBFirst;
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}
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#ifdef ENABLE_VOSF
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// Allocate a page-aligned chunk of memory for frame buffer
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the_buffer_size = align_on_page_boundary((aligned_height + 2) * img->bytes_per_line);
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the_host_buffer = the_buffer_copy;
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the_buffer_copy = (uint8 *)allocate_framebuffer(the_buffer_size);
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memset(the_buffer_copy, 0, the_buffer_size);
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the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size);
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memset(the_buffer, 0, the_buffer_size);
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#else
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// Allocate memory for frame buffer
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the_buffer = (uint8 *)malloc((aligned_height + 2) * img->bytes_per_line);
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#endif
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// Create GC
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the_gc = XCreateGC(x_display, the_win, 0, 0);
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@ -352,14 +438,19 @@ static bool init_window(int width, int height)
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XDefineCursor(x_display, the_win, mac_cursor);
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// Set VideoMonitor
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bool native_byte_order;
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#ifdef WORDS_BIGENDIAN
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set_video_monitor(width, height, img->bytes_per_line, img->bitmap_bit_order == MSBFirst);
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native_byte_order = (img->bitmap_bit_order == MSBFirst);
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#else
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set_video_monitor(width, height, img->bytes_per_line, img->bitmap_bit_order == LSBFirst);
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native_byte_order = (img->bitmap_bit_order == LSBFirst);
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#endif
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#ifdef ENABLE_VOSF
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do_update_framebuffer = GET_FBCOPY_FUNC(depth, native_byte_order, DISPLAY_WINDOW);
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#endif
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set_video_monitor(width, height, img->bytes_per_line, native_byte_order);
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#if REAL_ADDRESSING
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VideoMonitor.mac_frame_base = (uint32)the_buffer;
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#if REAL_ADDRESSING || DIRECT_ADDRESSING
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VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
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#else
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VideoMonitor.mac_frame_base = MacFrameBaseMac;
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#endif
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@ -492,9 +583,29 @@ static bool init_fbdev_dga(char *in_fb_name)
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}
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}
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#if REAL_ADDRESSING || DIRECT_ADDRESSING
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// If the blit function is null, i.e. just a copy of the buffer,
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// we first try to avoid the allocation of a temporary frame buffer
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use_vosf = true;
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do_update_framebuffer = GET_FBCOPY_FUNC(depth, true, DISPLAY_DGA);
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if (do_update_framebuffer == FBCOPY_FUNC(fbcopy_raw))
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use_vosf = false;
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if (use_vosf) {
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the_host_buffer = the_buffer;
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the_buffer_size = align_on_page_boundary((height + 2) * bytes_per_row);
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the_buffer_copy = (uint8 *)malloc(the_buffer_size);
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memset(the_buffer_copy, 0, the_buffer_size);
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the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size);
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memset(the_buffer, 0, the_buffer_size);
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}
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#elif ENABLE_VOSF
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use_vosf = false;
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#endif
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set_video_monitor(width, height, bytes_per_row, true);
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#if REAL_ADDRESSING
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VideoMonitor.mac_frame_base = (uint32)the_buffer;
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#if REAL_ADDRESSING || DIRECT_ADDRESSING
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VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
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#else
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VideoMonitor.mac_frame_base = MacFrameBaseMac;
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#endif
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@ -575,10 +686,32 @@ static bool init_xf86_dga(int width, int height)
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bytes_per_row *= 4;
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break;
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}
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#if REAL_ADDRESSING || DIRECT_ADDRESSING
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// If the blit function is null, i.e. just a copy of the buffer,
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// we first try to avoid the allocation of a temporary frame buffer
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use_vosf = true;
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do_update_framebuffer = GET_FBCOPY_FUNC(depth, true, DISPLAY_DGA);
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if (do_update_framebuffer == FBCOPY_FUNC(fbcopy_raw))
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use_vosf = false;
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if (use_vosf) {
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the_host_buffer = the_buffer;
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the_buffer_size = align_on_page_boundary((height + 2) * bytes_per_row);
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the_buffer_copy = (uint8 *)malloc(the_buffer_size);
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memset(the_buffer_copy, 0, the_buffer_size);
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the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size);
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memset(the_buffer, 0, the_buffer_size);
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}
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#elif ENABLE_VOSF
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// The UAE memory handlers will already color conversion, if needed.
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use_vosf = false;
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#endif
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set_video_monitor(width, height, bytes_per_row, true);
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#if REAL_ADDRESSING
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VideoMonitor.mac_frame_base = (uint32)the_buffer;
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MacFrameLayout = FLAYOUT_DIRECT;
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#if REAL_ADDRESSING || DIRECT_ADDRESSING
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VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
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// MacFrameLayout = FLAYOUT_DIRECT;
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#else
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VideoMonitor.mac_frame_base = MacFrameBaseMac;
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#endif
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@ -654,8 +787,81 @@ static void keycode_init(void)
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}
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}
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bool VideoInitBuffer()
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{
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#ifdef ENABLE_VOSF
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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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mainBuffer.memBase = (uint32) the_buffer;
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// Align the frame buffer on page boundary
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mainBuffer.memStart = (uint32)((((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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mainBuffer.pageSize = page_size;
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mainBuffer.pageCount = (mainBuffer.memLength + page_mask)/mainBuffer.pageSize;
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mainBuffer.pageBits = int( log(mainBuffer.pageSize) / log(2.0) );
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if (mainBuffer.dirtyPages != 0)
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free(mainBuffer.dirtyPages);
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mainBuffer.dirtyPages = (uint8 *) malloc(mainBuffer.pageCount);
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if (mainBuffer.pageInfo != 0)
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free(mainBuffer.pageInfo);
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mainBuffer.pageInfo = (ScreenPageInfo *) malloc(mainBuffer.pageCount * sizeof(ScreenPageInfo));
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if ((mainBuffer.dirtyPages == 0) || (mainBuffer.pageInfo == 0))
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return false;
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PFLAG_CLEAR_ALL;
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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.bytes_per_row;
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if (y1 >= VideoMonitor.y)
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y1 = VideoMonitor.y - 1;
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int y2 = (a + mainBuffer.pageSize) / VideoMonitor.bytes_per_row;
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if (y2 >= VideoMonitor.y)
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y2 = VideoMonitor.y - 1;
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mainBuffer.pageInfo[i].top = y1;
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mainBuffer.pageInfo[i].bottom = y2;
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a += mainBuffer.pageSize;
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if (a > mainBuffer.memLength)
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a = mainBuffer.memLength;
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}
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// We can now write-protect the frame buffer
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if (mprotect((caddr_t)mainBuffer.memStart, mainBuffer.memLength, PROT_READ) != 0)
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return false;
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}
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#endif
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return true;
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}
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bool VideoInit(bool classic)
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{
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#ifdef ENABLE_VOSF
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// Open /dev/zero
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zero_fd = open("/dev/zero", O_RDWR);
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if (zero_fd < 0) {
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char str[256];
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sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno));
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ErrorAlert(str);
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return false;
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}
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// Zero the mainBuffer structure
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mainBuffer.dirtyPages = 0;
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mainBuffer.pageInfo = 0;
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#endif
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// Check if X server runs on local machine
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local_X11 = (strncmp(XDisplayName(x_display_name), ":", 1) == 0)
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|| (strncmp(XDisplayName(x_display_name), "unix:", 5) == 0);
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@ -807,7 +1013,7 @@ bool VideoInit(bool classic)
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pthread_mutex_lock(&frame_buffer_lock);
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#endif
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#if !REAL_ADDRESSING
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#if !REAL_ADDRESSING && !DIRECT_ADDRESSING
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// Set variables for UAE memory mapping
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MacFrameBaseHost = the_buffer;
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MacFrameSize = VideoMonitor.bytes_per_row * VideoMonitor.y;
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@ -817,6 +1023,27 @@ bool VideoInit(bool classic)
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MacFrameLayout = FLAYOUT_NONE;
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#endif
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#ifdef ENABLE_VOSF
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if (use_vosf) {
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// Initialize the mainBuffer structure
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if (!VideoInitBuffer()) {
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// TODO: STR_VOSF_INIT_ERR ?
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ErrorAlert("Could not initialize Video on SEGV signals");
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return false;
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}
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// Initialize the handler for SIGSEGV
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if (!Screen_fault_handler_init()) {
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// TODO: STR_VOSF_INIT_ERR ?
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ErrorAlert("Could not initialize Video on SEGV signals");
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return false;
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}
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}
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#endif
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// Initialize VideoRefresh function
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VideoRefreshInit();
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XSync(x_display, false);
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#ifdef HAVE_PTHREADS
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@ -885,17 +1112,51 @@ void VideoExit(void)
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XFreeColormap(x_display, cmap[0]);
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XFreeColormap(x_display, cmap[1]);
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}
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if (!use_vosf) {
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if (the_buffer) {
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free(the_buffer);
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the_buffer = NULL;
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}
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if (the_buffer) {
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free(the_buffer);
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the_buffer = NULL;
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if (!have_shm && the_buffer_copy) {
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free(the_buffer_copy);
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the_buffer_copy = NULL;
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}
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}
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#ifdef ENABLE_VOSF
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else {
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if (the_buffer != (uint8 *)MAP_FAILED) {
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munmap((caddr_t)the_buffer, the_buffer_size);
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the_buffer = 0;
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}
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if (the_buffer_copy != (uint8 *)MAP_FAILED) {
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munmap((caddr_t)the_buffer_copy, the_buffer_size);
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the_buffer_copy = 0;
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}
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}
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#endif
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}
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#ifdef ENABLE_VOSF
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if (use_vosf) {
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// Clear mainBuffer data
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if (mainBuffer.pageInfo) {
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free(mainBuffer.pageInfo);
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mainBuffer.pageInfo = 0;
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}
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if (!have_shm && the_buffer_copy) {
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free(the_buffer_copy);
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the_buffer_copy = NULL;
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if (mainBuffer.dirtyPages) {
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free(mainBuffer.dirtyPages);
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mainBuffer.dirtyPages = 0;
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}
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}
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// Close /dev/zero
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if (zero_fd > 0)
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close(zero_fd);
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#endif
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}
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@ -1030,7 +1291,24 @@ static void resume_emul(void)
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// Restore frame buffer
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if (fb_save) {
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#if REAL_ADDRESSING || DIRECT_ADDRESSING
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if (use_vosf)
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mprotect((caddr_t)mainBuffer.memStart, mainBuffer.memLength, PROT_READ|PROT_WRITE);
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#endif
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memcpy(the_buffer, fb_save, VideoMonitor.y * VideoMonitor.bytes_per_row);
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#if REAL_ADDRESSING || DIRECT_ADDRESSING
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if (use_vosf) {
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mprotect((caddr_t)mainBuffer.memStart, mainBuffer.memLength, PROT_READ);
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do_update_framebuffer(the_host_buffer, the_buffer, VideoMonitor.x * VideoMonitor.bytes_per_row);
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#ifdef HAVE_PTHREADS
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pthread_mutex_lock(&Screen_draw_lock);
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#endif
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PFLAG_CLEAR_ALL;
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#ifdef HAVE_PTHREADS
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pthread_mutex_unlock(&Screen_draw_lock);
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#endif
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}
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#endif
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free(fb_save);
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fb_save = NULL;
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}
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@ -1311,6 +1589,25 @@ static void handle_events(void)
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// Hidden parts exposed, force complete refresh of window
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case Expose:
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if (display_type == DISPLAY_WINDOW) {
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#ifdef ENABLE_VOSF
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const XExposeEvent & xev = event.xexpose;
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const uint32 start = xev.y * VideoMonitor.bytes_per_row + xev.x;
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const uint32 end = (xev.y + xev.height - 1) * VideoMonitor.bytes_per_row + (xev.x + xev.width);
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int page = start >> mainBuffer.pageBits;
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uint32 addr = start;
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while (addr < end) {
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memset(the_buffer_copy + addr, 0, mainBuffer.pageSize);
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addr += mainBuffer.pageSize;
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#ifdef HAVE_PTHREADS
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pthread_mutex_lock(&Screen_draw_lock);
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#endif
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PFLAG_SET(page);
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#ifdef HAVE_PTHREADS
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pthread_mutex_unlock(&Screen_draw_lock);
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#endif
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++page;
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}
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#else
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if (frame_skip == 0) { // Dynamic refresh
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int x1, y1;
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for (y1=0; y1<16; y1++)
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@ -1319,6 +1616,7 @@ static void handle_events(void)
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nr_boxes = 16 * 16;
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} else
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memset(the_buffer_copy, 0, VideoMonitor.bytes_per_row * VideoMonitor.y);
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#endif /* ENABLE_VOSF */
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}
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break;
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}
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@ -1535,10 +1833,202 @@ static void update_display_static(void)
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Screen refresh functions
|
||||
*/
|
||||
|
||||
// The specialisations hereunder are meant to enable VOSF with DGA in direct
|
||||
// addressing mode in case the address spaces (RAM, ROM, FrameBuffer) could
|
||||
// not get mapped correctly with respect to the predetermined host frame
|
||||
// buffer base address.
|
||||
//
|
||||
// Hmm, in other words, when in direct addressing mode and DGA is requested,
|
||||
// we first try to "triple allocate" the address spaces according to the real
|
||||
// host frame buffer address. Then, if it fails, we will use a temporary
|
||||
// frame buffer thus making the real host frame buffer updated when pages
|
||||
// of the temp frame buffer are altered.
|
||||
//
|
||||
// As a side effect, a little speed gain in screen updates could be noticed
|
||||
// for other modes than DGA.
|
||||
//
|
||||
// The following two functions below are inline so that a clever compiler
|
||||
// could specialise the code according to the current screen depth and
|
||||
// display type. A more clever compiler would the job by itself though...
|
||||
// (update_display_vosf is inlined as well)
|
||||
|
||||
static inline void possibly_quit_dga_mode()
|
||||
{
|
||||
#if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
|
||||
// Quit DGA mode if requested
|
||||
if (quit_full_screen) {
|
||||
quit_full_screen = false;
|
||||
#ifdef ENABLE_XF86_DGA
|
||||
XF86DGADirectVideo(x_display, screen, 0);
|
||||
#endif
|
||||
XUngrabPointer(x_display, CurrentTime);
|
||||
XUngrabKeyboard(x_display, CurrentTime);
|
||||
XUnmapWindow(x_display, the_win);
|
||||
XSync(x_display, false);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
static inline void handle_palette_changes(int depth, int display_type)
|
||||
{
|
||||
#ifdef HAVE_PTHREADS
|
||||
pthread_mutex_lock(&palette_lock);
|
||||
#endif
|
||||
if (palette_changed) {
|
||||
palette_changed = false;
|
||||
if (depth == 8) {
|
||||
XStoreColors(x_display, cmap[0], palette, 256);
|
||||
XStoreColors(x_display, cmap[1], palette, 256);
|
||||
|
||||
#ifdef ENABLE_XF86_DGA
|
||||
if (display_type == DISPLAY_DGA) {
|
||||
current_dga_cmap ^= 1;
|
||||
XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
}
|
||||
#ifdef HAVE_PTHREADS
|
||||
pthread_mutex_unlock(&palette_lock);
|
||||
#endif
|
||||
}
|
||||
|
||||
static void video_refresh_dga(void)
|
||||
{
|
||||
// Quit DGA mode if requested
|
||||
possibly_quit_dga_mode();
|
||||
|
||||
// Handle X events
|
||||
handle_events();
|
||||
|
||||
// Handle palette changes
|
||||
handle_palette_changes(depth, DISPLAY_DGA);
|
||||
}
|
||||
|
||||
#if REAL_ADDRESSING || DIRECT_ADDRESSING
|
||||
static void video_refresh_dga_vosf(void)
|
||||
{
|
||||
// Quit DGA mode if requested
|
||||
possibly_quit_dga_mode();
|
||||
|
||||
// Handle X events
|
||||
handle_events();
|
||||
|
||||
// Handle palette changes
|
||||
handle_palette_changes(depth, DISPLAY_DGA);
|
||||
|
||||
// Update display (VOSF variant)
|
||||
static int tick_counter = 0;
|
||||
if (++tick_counter >= frame_skip) {
|
||||
tick_counter = 0;
|
||||
#ifdef HAVE_PTHREADS
|
||||
pthread_mutex_lock(&Screen_draw_lock);
|
||||
#endif
|
||||
update_display_dga_vosf();
|
||||
#ifdef HAVE_PTHREADS
|
||||
pthread_mutex_unlock(&Screen_draw_lock);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef ENABLE_VOSF
|
||||
static void video_refresh_window_vosf(void)
|
||||
{
|
||||
// Quit DGA mode if requested
|
||||
possibly_quit_dga_mode();
|
||||
|
||||
// Handle X events
|
||||
handle_events();
|
||||
|
||||
// Handle palette changes
|
||||
handle_palette_changes(depth, DISPLAY_WINDOW);
|
||||
|
||||
// Update display (VOSF variant)
|
||||
static int tick_counter = 0;
|
||||
if (++tick_counter >= frame_skip) {
|
||||
tick_counter = 0;
|
||||
#ifdef HAVE_PTHREADS
|
||||
pthread_mutex_lock(&Screen_draw_lock);
|
||||
#endif
|
||||
update_display_window_vosf();
|
||||
#ifdef HAVE_PTHREADS
|
||||
pthread_mutex_unlock(&Screen_draw_lock);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
static void video_refresh_window_static(void)
|
||||
{
|
||||
// Handle X events
|
||||
handle_events();
|
||||
|
||||
// Handle_palette changes
|
||||
handle_palette_changes(depth, DISPLAY_WINDOW);
|
||||
|
||||
// Update display (static variant)
|
||||
static int tick_counter = 0;
|
||||
if (++tick_counter >= frame_skip) {
|
||||
tick_counter = 0;
|
||||
update_display_static();
|
||||
}
|
||||
}
|
||||
|
||||
static void video_refresh_window_dynamic(void)
|
||||
{
|
||||
// Handle X events
|
||||
handle_events();
|
||||
|
||||
// Handle_palette changes
|
||||
handle_palette_changes(depth, DISPLAY_WINDOW);
|
||||
|
||||
// Update display (dynamic variant)
|
||||
static int tick_counter = 0;
|
||||
tick_counter++;
|
||||
update_display_dynamic(tick_counter);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Thread for screen refresh, input handling etc.
|
||||
*/
|
||||
|
||||
void VideoRefreshInit(void)
|
||||
{
|
||||
// TODO: set up specialised 8bpp VideoRefresh handlers ?
|
||||
if (display_type == DISPLAY_DGA) {
|
||||
#if REAL_ADDRESSING || DIRECT_ADDRESSING
|
||||
if (use_vosf)
|
||||
video_refresh = video_refresh_dga_vosf;
|
||||
else
|
||||
#endif
|
||||
video_refresh = video_refresh_dga;
|
||||
}
|
||||
else {
|
||||
#ifdef ENABLE_VOSF
|
||||
if (use_vosf)
|
||||
video_refresh = video_refresh_window_vosf;
|
||||
else
|
||||
#endif
|
||||
if (frame_skip == 0)
|
||||
video_refresh = video_refresh_window_dynamic;
|
||||
else
|
||||
video_refresh = video_refresh_window_static;
|
||||
}
|
||||
}
|
||||
|
||||
void VideoRefresh(void)
|
||||
{
|
||||
// TODO: make main_unix/VideoRefresh call directly video_refresh() ?
|
||||
video_refresh();
|
||||
}
|
||||
|
||||
#if 0
|
||||
void VideoRefresh(void)
|
||||
{
|
||||
#if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
|
||||
@ -1594,25 +2084,27 @@ void VideoRefresh(void)
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_PTHREADS
|
||||
static void *redraw_func(void *arg)
|
||||
{
|
||||
uint64 start = GetTicks_usec();
|
||||
int64 ticks = 0;
|
||||
uint64 start = GetTicks_usec();
|
||||
int64 ticks = 0;
|
||||
uint64 next = GetTicks_usec();
|
||||
while (!redraw_thread_cancel) {
|
||||
VideoRefresh();
|
||||
// VideoRefresh();
|
||||
video_refresh();
|
||||
next += 16667;
|
||||
int64 delay = next - GetTicks_usec();
|
||||
if (delay > 0)
|
||||
Delay_usec(delay);
|
||||
else if (delay < -16667)
|
||||
next = GetTicks_usec();
|
||||
ticks++;
|
||||
ticks++;
|
||||
}
|
||||
uint64 end = GetTicks_usec();
|
||||
printf("%Ld ticks in %Ld usec = %Ld ticks/sec\n", ticks, end - start, (end - start) / ticks);
|
||||
uint64 end = GetTicks_usec();
|
||||
printf("%Ld ticks in %Ld usec = %Ld ticks/sec\n", ticks, end - start, (end - start) / ticks);
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user