Fixed buffer overflow issue in DXTCImage, added nicer error messages.
This commit is contained in:
parent
c698136614
commit
d19dc772db
1
bin/.gitignore
vendored
1
bin/.gitignore
vendored
@ -7,6 +7,7 @@ metin2.cfg
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BGM/lastplay.inf
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# Log files
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ErrorLog.txt
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log.txt
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syserr.txt
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BIN
bin/errorlog.exe
BIN
bin/errorlog.exe
Binary file not shown.
Binary file not shown.
Binary file not shown.
@ -7,32 +7,13 @@
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FILE * fException;
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/*
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static char __msg[4000], __cmsg[4000];
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static int __idx;
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CLZObject __l;
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*/
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/*
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typedef BOOL
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(CALLBACK *PENUMLOADED_MODULES_CALLBACK)(
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__in PCSTR ModuleName,
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__in ULONG ModuleBase,
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__in ULONG ModuleSize,
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__in_opt PVOID UserContext
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);
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*/
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#if _MSC_VER >= 1400
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BOOL CALLBACK EnumerateLoadedModulesProc(PCSTR ModuleName, ULONG ModuleBase, ULONG ModuleSize, PVOID UserContext)
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#else
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BOOL CALLBACK EnumerateLoadedModulesProc(PSTR ModuleName, ULONG ModuleBase, ULONG ModuleSize, PVOID UserContext)
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#endif
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{
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DWORD offset = *((DWORD*)UserContext);
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if (offset >= ModuleBase && offset <= ModuleBase + ModuleSize)
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{
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fprintf(fException, "%s", ModuleName);
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//__idx += sprintf(__msg+__idx, "%s", ModuleName);
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return FALSE;
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}
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else
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@ -56,20 +37,10 @@ LONG __stdcall EterExceptionFilter(_EXCEPTION_POINTERS* pExceptionInfo)
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module_time = (time_t)GetTimestampForLoadedLibrary(hModule);
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fprintf(fException, "Module Name: %s\n", module_name);
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fprintf(fException, "Time Stamp: 0x%08x - %s\n", module_time, ctime(&module_time));
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fprintf(fException, "Time Stamp: %lld - %s\n", module_time, ctime(&module_time));
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fprintf(fException, "\n");
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fprintf(fException, "Exception Type: 0x%08x\n", pExceptionInfo->ExceptionRecord->ExceptionCode);
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fprintf(fException, "\n");
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/*
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{
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__idx+=sprintf(__msg+__idx,"Module Name: %s\n", module_name);
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__idx+=sprintf(__msg+__idx, "Time Stamp: 0x%08x - %s\n", module_time, ctime(&module_time));
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__idx+=sprintf(__msg+__idx, "\n");
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__idx+=sprintf(__msg+__idx, "Exception Type: 0x%08x\n", pExceptionInfo->ExceptionRecord->ExceptionCode);
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__idx+=sprintf(__msg+__idx, "\n");
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}
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*/
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CONTEXT& context = *pExceptionInfo->ContextRecord;
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@ -78,15 +49,6 @@ LONG __stdcall EterExceptionFilter(_EXCEPTION_POINTERS* pExceptionInfo)
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fprintf(fException, "esi: 0x%08x\tedi: 0x%08x\n", context.Esi, context.Edi);
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fprintf(fException, "ebp: 0x%08x\tesp: 0x%08x\n", context.Ebp, context.Esp);
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fprintf(fException, "\n");
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/*
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{
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__idx+=sprintf(__msg+__idx, "eax: 0x%08x\tebx: 0x%08x\n", context.Eax, context.Ebx);
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__idx+=sprintf(__msg+__idx, "ecx: 0x%08x\tedx: 0x%08x\n", context.Ecx, context.Edx);
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__idx+=sprintf(__msg+__idx, "esi: 0x%08x\tedi: 0x%08x\n", context.Esi, context.Edi);
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__idx+=sprintf(__msg+__idx, "ebp: 0x%08x\tesp: 0x%08x\n", context.Ebp, context.Esp);
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__idx+=sprintf(__msg+__idx, "\n");
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}
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*/
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STACKFRAME stackFrame = {0,};
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stackFrame.AddrPC.Offset = context.Eip;
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@ -101,11 +63,8 @@ LONG __stdcall EterExceptionFilter(_EXCEPTION_POINTERS* pExceptionInfo)
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if (StackWalk(IMAGE_FILE_MACHINE_I386, hProcess, hThread, &stackFrame, &context, NULL, NULL, NULL, NULL) != FALSE)
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{
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fprintf(fException, "0x%08x\t", stackFrame.AddrPC.Offset);
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//__idx+=sprintf(__msg+__idx, "0x%08x\t", stackFrame.AddrPC.Offset);
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EnumerateLoadedModules(hProcess, (PENUMLOADED_MODULES_CALLBACK) EnumerateLoadedModulesProc, &stackFrame.AddrPC.Offset);
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fprintf(fException, "\n");
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//__idx+=sprintf(__msg+__idx, "\n");
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}
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else
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{
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@ -114,89 +73,13 @@ LONG __stdcall EterExceptionFilter(_EXCEPTION_POINTERS* pExceptionInfo)
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}
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fprintf(fException, "\n");
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//__idx+=sprintf(__msg+__idx, "\n");
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/*
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BYTE* stack = (BYTE*)(context.Esp);
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fprintf(fException, "stack %08x - %08x\n", context.Esp, context.Esp+1024);
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//__idx+=sprintf(__msg+__idx, "stack %08x - %08x\n", context.Esp, context.Esp+1024);
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for(i=0; i<16; ++i)
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{
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fprintf(fException, "%08X : ", context.Esp+i*16);
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//__idx+=sprintf(__msg+__idx, "%08X : ", context.Esp+i*16);
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for(int j=0; j<16; ++j)
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{
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fprintf(fException, "%02X ", stack[i*16+j]);
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//__idx+=sprintf(__msg+__idx, "%02X ", stack[i*16+j]);
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}
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fprintf(fException, "\n");
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//__idx+=sprintf(__msg+__idx, "\n");
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}
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fprintf(fException, "\n");
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//__idx+=sprintf(__msg+__idx, "\n");
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*/
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fflush(fException);
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fclose(fException);
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fException = NULL;
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//WinExec()
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/*CreateProcess("cmd.exe",NULL,NULL,NULL,FALSE,
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CREATE_NEW_PROCESS_GROUP|DETACHED_PROCESS,NULL,NULL,NULL,NULL);
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MessageBox(NULL,"게임 실행에 치명적인 문제가 발생하였습니다.\n게임을 종료하고 에러 로그를 남깁니다.\n에러 로그를 서버에 보내시겠습니까?","에러 발생!",MB_YESNO);*/
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/*
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__l.BeginCompressInBuffer(__msg,__idx,__cmsg);
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if (__l.Compress())
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{
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//fprintf(fException,"Compress printing\n");
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// send this to server
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SOCKET s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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ioctlsocket(s,FIONBIO,0);
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if (s==INVALID_SOCKET)
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{
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//fprintf(fException,"INVALID %X\n",WSAGetLastError());
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}
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sockaddr_in sa;
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sa.sin_family = AF_INET;
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sa.sin_port = htons(19294);
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sa.sin_addr.s_addr = inet_addr("147.46.127.42");
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if (connect(s,(sockaddr*)&sa,sizeof(sa)))
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{
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//fprintf(fException,"%X\n",WSAGetLastError());
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}
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int total = 0;
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int ret=0;
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while(1)
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{
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//ret = send(s,(char*)__msg+total,__idx-total,0);
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ret = send(s,(char*)__l.GetBuffer()+total,__l.GetSize()-total,0);
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//fprintf(fException,"send %d\n",ret);
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if (ret<0)
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{
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//fprintf(fException,"%X\n",WSAGetLastError());
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break;
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}
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total+=ret;
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if (total>=__idx)
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//if (total>=__l.GetSize())
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break;
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}
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//__l.GetBuffer();
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Sleep(500);
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closesocket(s);
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}*/
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WinExec("errorlog.exe",SW_SHOW);
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MessageBox(NULL, "A fatal error was encountered while running the game.\nAn error log was saved to ErrorLog.txt.\nPlease consider reporting this issue.", "Error!", MB_OK);
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}
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return EXCEPTION_EXECUTE_HANDLER;
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@ -83,51 +83,7 @@ void CDXTCImage::Clear()
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Initialize();
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}
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bool CDXTCImage::LoadFromFile(const char * filename)
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{
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// only understands .dds files for now
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// return true if success
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char * exts[] = { ".DDS" };
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int next = 1;
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static char fileupper[MAX_PATH+1];
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strncpy(fileupper, filename, MAX_PATH);
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strupr(fileupper);
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int i;
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bool knownformat = false;
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for (i = 0; i < next; ++i)
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{
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char * found = strstr(fileupper, exts[0]);
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if (found != NULL)
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{
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knownformat = true;
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break;
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}
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}
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if (knownformat == false)
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{
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Tracef("Unknown file format encountered! [%s]\n", filename);
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return(false);
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}
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CMappedFile mappedFile;
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LPCVOID pvMap;
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if (!mappedFile.Create(filename, &pvMap, 0, 0))
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{
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Tracef("Can't open file for reading! [%s]\n", filename);
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return false;
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}
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return LoadFromMemory((const BYTE*) pvMap);
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}
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bool CDXTCImage::LoadHeaderFromMemory(const BYTE * c_pbMap)
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bool CDXTCImage::LoadHeaderFromMemory(const BYTE * c_pbMap, int iSize)
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{
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//////////////////////////////////////
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// start reading the file
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@ -135,18 +91,26 @@ bool CDXTCImage::LoadHeaderFromMemory(const BYTE * c_pbMap)
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DWORD dwMagic;
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// Read magic number
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if (iSize < sizeof(DWORD))
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return false;
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dwMagic = *(DWORD *) c_pbMap;
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c_pbMap += sizeof(DWORD);
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iSize -= sizeof(DWORD);
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//!@#
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// if (dwMagic != MAKEFOURCC('D','D','S',' '))
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// return false;
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// Check whether the magic header is correct
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if (dwMagic != MAKEFOURCC('D','D','S',' '))
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return false;
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DDSURFACEDESC2 ddsd; // read from dds file
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// Read the surface description
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if (iSize < sizeof(DDSURFACEDESC2))
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return false;
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memcpy(&ddsd, c_pbMap, sizeof(DDSURFACEDESC2));
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c_pbMap += sizeof(DDSURFACEDESC2);
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iSize -= sizeof(DDSURFACEDESC2);
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// Does texture have mipmaps?
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m_bMipTexture = (ddsd.dwMipMapCount > 0) ? TRUE : FALSE;
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@ -211,52 +175,6 @@ bool CDXTCImage::LoadHeaderFromMemory(const BYTE * c_pbMap)
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return true;
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}
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//////////////////////////////////////////////////////////////////////
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bool CDXTCImage::LoadFromMemory(const BYTE * c_pbMap)
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{
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if (!LoadHeaderFromMemory(c_pbMap))
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return false;
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if (m_dwFlags & DDSD_PITCH)
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{
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DWORD dwBytesPerRow = m_nWidth * m_xddPixelFormat.dwRGBBitCount / 8;
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m_nCompSize = m_lPitch * m_nHeight;
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m_nCompLineSz = dwBytesPerRow;
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m_bCompVector[0].resize(m_nCompSize);
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BYTE * pDest = &m_bCompVector[0][0];
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c_pbMap = m_pbCompBufferByLevels[0];
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for (int yp = 0; yp < m_nHeight; ++yp)
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{
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memcpy(pDest, c_pbMap, dwBytesPerRow);
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pDest += m_lPitch;
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c_pbMap += m_lPitch;
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}
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}
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else
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{
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if (m_dwFlags & DDSD_MIPMAPCOUNT)
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{
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for (DWORD dwLinearSize = m_lPitch, i = 0; i < m_dwMipMapCount; ++i, dwLinearSize >>= 2)
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{
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m_bCompVector[i].resize(dwLinearSize);
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Copy(i, &m_bCompVector[i][0], dwLinearSize);
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}
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}
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else
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{
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m_bCompVector[0].resize(m_lPitch);
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Copy(0, &m_bCompVector[0][0], m_lPitch);
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}
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}
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// done reading file
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return true;
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}
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bool CDXTCImage::Copy(int miplevel, BYTE * pbDest, long lDestPitch)
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{
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if (!(m_dwFlags & DDSD_MIPMAPCOUNT))
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@ -959,688 +877,3 @@ VOID CDXTCImage::DecodePixelFormat(CHAR* strPixelFormat, XDDPIXELFORMAT* pxddpf)
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break;
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}
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}
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/*
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// Struct to hold various timing values
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struct TimingInfo
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{
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LARGE_INTEGER m_start_clk;
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LARGE_INTEGER m_end_clk;
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int m_nSamples;
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LARGE_INTEGER m_interval_sum; // sum of all end-start, nSamples number added in
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CString m_csName; // text desc of what timed
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};
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void CDXTCImage::RunTimingSession()
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{
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// Must have a dxt5 texture loaded
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// No special reason - just lazy coding
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// Functions called to time code are separate from non-timed
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// code. It's alogorithm that counts.
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ASSERT(m_pCompBytes != NULL);
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ASSERT(m_pDecompBytes != NULL); // must already have allocated memory
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switch (m_CompFormat)
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{
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case PF_DXT1:
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case PF_DXT2:
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case PF_DXT3:
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case PF_DXT4:
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case PF_UNKNOWN:
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Tracef("You must have a DXT5 texture loaded to RunTimingSession()!!\n");
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Tracef("Now I will be nasty and ASSERT(false)!\n");
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ASSERT(false);
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break;
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case PF_DXT5:
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Tracef("Running code timing session on DXT5 color decompress\n");
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break;
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}
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LARGE_INTEGER start_clk, end_clk;
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QueryPerformanceCounter(&start_clk);
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#define NMETHOD 4
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#define NBATCHES 4
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int passes[NBATCHES];
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passes[0] = 1;
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passes[1] = 10;
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passes[2] = 30;
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passes[3] = 50;
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TimingInfo method[NMETHOD][NBATCHES];
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int i, n;
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FILE * pf = fopen("timing.txt", "wt");
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if (pf == NULL)
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{
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return;
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}
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fprintf(pf, "\n\n");
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for (i = 0; i < NBATCHES; ++i)
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{
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Sleep(50);
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fprintf(pf,"i: %d passes[i]: %d\n", i, passes[i]);
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Time_Decomp5_01(passes[i], &(method[0][i]));
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Time_Decomp5_02(passes[i], &(method[1][i]));
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Time_Decomp5_03(passes[i], &(method[2][i]));
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Time_Decomp5_04(passes[i], &(method[3][i]));
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}
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QueryPerformanceCounter(&end_clk);
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// unsigned long total;
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// total = (unsigned long) (end_clk - start_clk);
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LARGE_INTEGER freq;
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QueryPerformanceFrequency(& freq);
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fprintf(pf, "\nCounter freq = %u %d \n", freq.LowPart, freq.HighPart);
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fprintf(pf, "start: %u %u end: %u %u\n", start_clk.LowPart, start_clk.HighPart, end_clk.LowPart, end_clk.HighPart);
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Tracef("\nCounter freq = %u %d \n", freq.LowPart, freq.HighPart);
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Tracef("start: %u %u end: %u %u\n", start_clk.LowPart, start_clk.HighPart, end_clk.LowPart, end_clk.HighPart);
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double dur = ((double)end_clk.LowPart - (double)start_clk.LowPart) / (double)freq.LowPart;
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fprintf(pf, "Total timing session took: %u cycles = %f seconds\n", (end_clk.LowPart - start_clk.LowPart), dur);
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fprintf(pf, "\n\n");
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Tracef("Total timing session took: %u cycles = %f seconds\n", (end_clk.LowPart - start_clk.LowPart), dur);
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Tracef("\n\n");
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for (n = 0; n < NMETHOD; ++n)
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{
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for (i = 0; i < NBATCHES; ++i)
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{
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fprintf(pf, "method %d:\n", n);
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fprintf(pf, " %s", method[n][i].m_csName);
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fprintf(pf, " tot: %u %u\n", method[n][i].m_interval_sum.HighPart, method[n][i].m_interval_sum.LowPart);
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Tracef("method %d:\n", n);
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Tracef(" %s", method[n][i].m_csName);
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Tracef(" tot: %u %u\n", method[n][i].m_interval_sum.HighPart, method[n][i].m_interval_sum.LowPart);
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dur = ((double)method[n][i].m_interval_sum.LowPart) / ((double)method[n][i].m_nSamples * (double)freq.LowPart);
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fprintf(pf, " avg: %u\n", method[n][i].m_interval_sum.LowPart / method[n][i].m_nSamples);
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fprintf(pf, " avg time: %f sec\n", dur);
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Tracef(" avg: %u\n", method[n][i].m_interval_sum.LowPart / method[n][i].m_nSamples);
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Tracef(" avg time: %f sec\n", dur);
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}
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fprintf(pf, "\n\n");
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Tracef("\n\n");
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}
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||||
|
||||
fclose(pf);
|
||||
|
||||
MessageBeep(MB_OK);
|
||||
//BOOL QueryPerformanceFrequency(
|
||||
// LARGE_INTEGER *lpFrequency // address of current frequency
|
||||
//);
|
||||
}
|
||||
|
||||
inline void GetColorBlockColors_m2(DXTColBlock * pBlock, Color8888 * col_0, Color8888 * col_1,
|
||||
Color8888 * col_2, Color8888 * col_3,
|
||||
WORD & wrd )
|
||||
{
|
||||
// method 2
|
||||
// freak variable bit structure method
|
||||
// normal math
|
||||
Color565 * pCol;
|
||||
|
||||
pCol = (Color565*) & (pBlock->col0);
|
||||
|
||||
col_0->a = 0xff;
|
||||
col_0->r = pCol->nRed;
|
||||
col_0->r <<= 3; // shift to full precision
|
||||
col_0->g = pCol->nGreen;
|
||||
col_0->g <<= 2;
|
||||
col_0->b = pCol->nBlue;
|
||||
col_0->b <<= 3;
|
||||
|
||||
pCol = (Color565*) & (pBlock->col1);
|
||||
col_1->a = 0xff;
|
||||
col_1->r = pCol->nRed;
|
||||
col_1->r <<= 3; // shift to full precision
|
||||
col_1->g = pCol->nGreen;
|
||||
col_1->g <<= 2;
|
||||
col_1->b = pCol->nBlue;
|
||||
col_1->b <<= 3;
|
||||
|
||||
if (pBlock->col0 > pBlock->col1)
|
||||
{
|
||||
// Four-color block: derive the other two colors.
|
||||
// 00 = color_0, 01 = color_1, 10 = color_2, 11 = color_3
|
||||
// These two bit codes correspond to the 2-bit fields
|
||||
// stored in the 64-bit block.
|
||||
wrd = ((WORD) col_0->r * 2 + (WORD) col_1->r) / 3;
|
||||
// no +1 for rounding
|
||||
// as bits have been shifted to 888
|
||||
col_2->r = (BYTE)wrd;
|
||||
|
||||
wrd = ((WORD) col_0->g * 2 + (WORD) col_1->g) / 3;
|
||||
col_2->g = (BYTE)wrd;
|
||||
|
||||
wrd = ((WORD) col_0->b * 2 + (WORD) col_1->b) / 3;
|
||||
col_2->b = (BYTE)wrd;
|
||||
col_2->a = 0xff;
|
||||
|
||||
wrd = ((WORD) col_0->r + (WORD) col_1->r * 2) / 3;
|
||||
col_3->r = (BYTE)wrd;
|
||||
|
||||
wrd = ((WORD) col_0->g + (WORD) col_1->g * 2) / 3;
|
||||
col_3->g = (BYTE)wrd;
|
||||
|
||||
wrd = ((WORD) col_0->b + (WORD) col_1->b * 2) / 3;
|
||||
col_3->b = (BYTE)wrd;
|
||||
col_3->a = 0xff;
|
||||
|
||||
}
|
||||
else
|
||||
{
|
||||
// Three-color block: derive the other color.
|
||||
// 00 = color_0, 01 = color_1, 10 = color_2,
|
||||
// 11 = transparent.
|
||||
// These two bit codes correspond to the 2-bit fields
|
||||
// stored in the 64-bit block.
|
||||
|
||||
// explicit for each component, unlike some refrasts...
|
||||
|
||||
// Tracef("block has alpha\n");
|
||||
wrd = ((WORD) col_0->r + (WORD) col_1->r) / 2;
|
||||
col_2->r = (BYTE)wrd;
|
||||
wrd = ((WORD) col_0->g + (WORD) col_1->g) / 2;
|
||||
col_2->g = (BYTE)wrd;
|
||||
wrd = ((WORD) col_0->b + (WORD) col_1->b) / 2;
|
||||
col_2->b = (BYTE)wrd;
|
||||
col_2->a = 0xff;
|
||||
|
||||
col_3->r = 0x00; // random color to indicate alpha
|
||||
col_3->g = 0xff;
|
||||
col_3->b = 0xff;
|
||||
col_3->a = 0x00;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
inline void GetColorBlockColors_m3(DXTColBlock * pBlock, Color8888 * col_0, Color8888 * col_1,
|
||||
Color8888 * col_2, Color8888 * col_3,
|
||||
WORD & wrd )
|
||||
{
|
||||
// method 3
|
||||
//////////////////////////////////////////////////////
|
||||
// super-freak variable bit structure with
|
||||
// Cool Math Trick (tm)
|
||||
|
||||
// Do 2/3 1/3 math BEFORE bit shift on the whole DWORD
|
||||
// as the fields will NEVER carry into the next
|
||||
// or overflow!! =)
|
||||
|
||||
Color565 * pCol;
|
||||
|
||||
pCol = (Color565*) & (pBlock->col0);
|
||||
|
||||
col_0->a = 0x00; // must set to 0 to avoid overflow in DWORD add
|
||||
col_0->r = pCol->nRed;
|
||||
col_0->g = pCol->nGreen;
|
||||
col_0->b = pCol->nBlue;
|
||||
|
||||
pCol = (Color565*) & (pBlock->col1);
|
||||
col_1->a = 0x00;
|
||||
col_1->r = pCol->nRed;
|
||||
col_1->g = pCol->nGreen;
|
||||
col_1->b = pCol->nBlue;
|
||||
|
||||
if (pBlock->col0 > pBlock->col1)
|
||||
{
|
||||
*((DWORD*)col_2) = ((*((DWORD*)col_0)) * 2 + (*((DWORD*)col_1)));
|
||||
|
||||
*((DWORD*)col_3) = ((*((DWORD*)col_0)) + (*((DWORD*)col_1)) * 2);
|
||||
|
||||
// now shift to appropriate precision & divide by 3.
|
||||
col_2->r = ((WORD) col_2->r << 3) / (WORD)3;
|
||||
col_2->g = ((WORD) col_2->g << 2) / (WORD)3;
|
||||
col_2->b = ((WORD) col_2->b << 3) / (WORD)3;
|
||||
|
||||
col_3->r = ((WORD) col_3->r << 3) / (WORD)3;
|
||||
col_3->g = ((WORD) col_3->g << 2) / (WORD)3;
|
||||
col_3->b = ((WORD) col_3->b << 3) / (WORD)3;
|
||||
|
||||
col_0->a = 0xff; // now set appropriate alpha
|
||||
col_1->a = 0xff;
|
||||
col_2->a = 0xff;
|
||||
col_3->a = 0xff;
|
||||
}
|
||||
else
|
||||
{
|
||||
*((DWORD*)col_2) = ((*((DWORD*)col_0)) + (*((DWORD*)col_1)));
|
||||
|
||||
// now shift to appropriate precision & divide by 2.
|
||||
// << 3) / 2 == << 2
|
||||
// << 2) / 2 == << 1
|
||||
col_2->r = ((WORD) col_2->r << 2);
|
||||
col_2->g = ((WORD) col_2->g << 1);
|
||||
col_2->b = ((WORD) col_2->b << 2);
|
||||
|
||||
col_2->a = 0xff;
|
||||
|
||||
col_3->a = 0x00; //
|
||||
col_3->r = 0x00; // random color to indicate alpha
|
||||
col_3->g = 0xff;
|
||||
col_3->b = 0xff;
|
||||
}
|
||||
|
||||
// now shift orig color components
|
||||
col_0->r <<= 3;
|
||||
col_0->g <<= 2;
|
||||
col_0->b <<= 3;
|
||||
|
||||
col_1->r <<= 3;
|
||||
col_1->g <<= 2;
|
||||
col_1->b <<= 3;
|
||||
}
|
||||
|
||||
|
||||
inline void GetColorBlockColors_m4(DXTColBlock * pBlock, Color8888 * col_0, Color8888 * col_1,
|
||||
Color8888 * col_2, Color8888 * col_3,
|
||||
WORD & wrd )
|
||||
{
|
||||
|
||||
// m1 color extraction from 5-6-5
|
||||
// m3 color math on DWORD before bit shift to full precision
|
||||
wrd = pBlock->col0;
|
||||
col_0->a = 0x00; // must set to 0 to avoid possible overflow & carry to next field in DWORD add
|
||||
|
||||
// extract r,g,b bits
|
||||
col_0->b = (unsigned char) wrd & 0x1f; // 0x1f = 0001 1111 to mask out upper 3 bits
|
||||
wrd >>= 5;
|
||||
col_0->g = (unsigned char) wrd & 0x3f; // 0x3f = 0011 1111 to mask out upper 2 bits
|
||||
wrd >>= 6;
|
||||
col_0->r = (unsigned char) wrd & 0x1f;
|
||||
|
||||
|
||||
// same for col # 2:
|
||||
wrd = pBlock->col1;
|
||||
col_1->a = 0x00; // must set to 0 to avoid possible overflow in DWORD add
|
||||
|
||||
// extract r,g,b bits
|
||||
col_1->b = (unsigned char) wrd & 0x1f;
|
||||
wrd >>= 5;
|
||||
col_1->g = (unsigned char) wrd & 0x3f;
|
||||
wrd >>= 6;
|
||||
col_1->r = (unsigned char) wrd & 0x1f;
|
||||
|
||||
if (pBlock->col0 > pBlock->col1)
|
||||
{
|
||||
*((DWORD*)col_2) = ((*((DWORD*)col_0)) * 2 + (*((DWORD*)col_1)));
|
||||
*((DWORD*)col_3) = ((*((DWORD*)col_0)) + (*((DWORD*)col_1)) * 2);
|
||||
|
||||
// shift to appropriate precision & divide by 3.
|
||||
col_2->r = ((WORD) col_2->r << 3) / (WORD)3;
|
||||
col_2->g = ((WORD) col_2->g << 2) / (WORD)3;
|
||||
col_2->b = ((WORD) col_2->b << 3) / (WORD)3;
|
||||
|
||||
col_3->r = ((WORD) col_3->r << 3) / (WORD)3;
|
||||
col_3->g = ((WORD) col_3->g << 2) / (WORD)3;
|
||||
col_3->b = ((WORD) col_3->b << 3) / (WORD)3;
|
||||
|
||||
col_0->a = 0xff; // set appropriate alpha
|
||||
col_1->a = 0xff;
|
||||
col_2->a = 0xff;
|
||||
col_3->a = 0xff;
|
||||
}
|
||||
else
|
||||
{
|
||||
*((DWORD*)col_2) = ((*((DWORD*)col_0)) + (*((DWORD*)col_1)));
|
||||
|
||||
// shift to appropriate precision & divide by 2.
|
||||
// << 3) / 2 == << 2
|
||||
// << 2) / 2 == << 1
|
||||
col_2->r = ((WORD) col_2->r << 2);
|
||||
col_2->g = ((WORD) col_2->g << 1);
|
||||
col_2->b = ((WORD) col_2->b << 2);
|
||||
|
||||
col_2->a = 0xff;
|
||||
|
||||
col_3->a = 0x00; //
|
||||
col_3->r = 0x00; // random color to indicate alpha
|
||||
col_3->g = 0xff;
|
||||
col_3->b = 0xff;
|
||||
}
|
||||
|
||||
// shift orig color components to full precision
|
||||
col_0->r <<= 3;
|
||||
col_0->g <<= 2;
|
||||
col_0->b <<= 3;
|
||||
|
||||
col_1->r <<= 3;
|
||||
col_1->g <<= 2;
|
||||
col_1->b <<= 3;
|
||||
}
|
||||
|
||||
|
||||
inline void GetColorBlockColors_m1(DXTColBlock * pBlock, Color8888 * col_0, Color8888 * col_1,
|
||||
Color8888 * col_2, Color8888 * col_3,
|
||||
WORD & wrd )
|
||||
{
|
||||
|
||||
// Method 1:
|
||||
// Shifty method
|
||||
wrd = pBlock->col0;
|
||||
col_0->a = 0xff;
|
||||
|
||||
// extract r,g,b bits
|
||||
col_0->b = (unsigned char) wrd;
|
||||
col_0->b <<= 3; // shift to full precision
|
||||
wrd >>= 5;
|
||||
col_0->g = (unsigned char) wrd;
|
||||
col_0->g <<= 2; // shift to full precision
|
||||
wrd >>= 6;
|
||||
col_0->r = (unsigned char) wrd;
|
||||
col_0->r <<= 3; // shift to full precision
|
||||
|
||||
// same for col # 2:
|
||||
wrd = pBlock->col1;
|
||||
col_1->a = 0xff;
|
||||
|
||||
// extract r,g,b bits
|
||||
col_1->b = (unsigned char) wrd;
|
||||
col_1->b <<= 3; // shift to full precision
|
||||
wrd >>= 5;
|
||||
col_1->g = (unsigned char) wrd;
|
||||
col_1->g <<= 2; // shift to full precision
|
||||
wrd >>= 6;
|
||||
col_1->r = (unsigned char) wrd;
|
||||
col_1->r <<= 3; // shift to full precision
|
||||
|
||||
// use this for all but the super-freak math method
|
||||
if (pBlock->col0 > pBlock->col1)
|
||||
{
|
||||
// Four-color block: derive the other two colors.
|
||||
// 00 = color_0, 01 = color_1, 10 = color_2, 11 = color_3
|
||||
// These two bit codes correspond to the 2-bit fields
|
||||
// stored in the 64-bit block.
|
||||
|
||||
wrd = ((WORD) col_0->r * 2 + (WORD) col_1->r) / 3;
|
||||
// no +1 for rounding
|
||||
// as bits have been shifted to 888
|
||||
col_2->r = (BYTE)wrd;
|
||||
|
||||
wrd = ((WORD) col_0->g * 2 + (WORD) col_1->g) / 3;
|
||||
col_2->g = (BYTE)wrd;
|
||||
|
||||
wrd = ((WORD) col_0->b * 2 + (WORD) col_1->b) / 3;
|
||||
col_2->b = (BYTE)wrd;
|
||||
col_2->a = 0xff;
|
||||
|
||||
wrd = ((WORD) col_0->r + (WORD) col_1->r * 2) / 3;
|
||||
col_3->r = (BYTE)wrd;
|
||||
|
||||
wrd = ((WORD) col_0->g + (WORD) col_1->g * 2) / 3;
|
||||
col_3->g = (BYTE)wrd;
|
||||
|
||||
wrd = ((WORD) col_0->b + (WORD) col_1->b * 2) / 3;
|
||||
col_3->b = (BYTE)wrd;
|
||||
col_3->a = 0xff;
|
||||
}
|
||||
else
|
||||
{
|
||||
// Three-color block: derive the other color.
|
||||
// 00 = color_0, 01 = color_1, 10 = color_2,
|
||||
// 11 = transparent.
|
||||
// These two bit codes correspond to the 2-bit fields
|
||||
// stored in the 64-bit block.
|
||||
|
||||
// explicit for each component, unlike some refrasts...
|
||||
|
||||
// Tracef("block has alpha\n");
|
||||
|
||||
wrd = ((WORD) col_0->r + (WORD) col_1->r) / 2;
|
||||
col_2->r = (BYTE)wrd;
|
||||
wrd = ((WORD) col_0->g + (WORD) col_1->g) / 2;
|
||||
col_2->g = (BYTE)wrd;
|
||||
wrd = ((WORD) col_0->b + (WORD) col_1->b) / 2;
|
||||
col_2->b = (BYTE)wrd;
|
||||
col_2->a = 0xff;
|
||||
|
||||
col_3->r = 0x00; // random color to indicate alpha
|
||||
col_3->g = 0xff;
|
||||
col_3->b = 0xff;
|
||||
col_3->a = 0x00;
|
||||
}
|
||||
} // Get color block colors (...)
|
||||
|
||||
void CDXTCImage::Time_Decomp5_01(int ntimes, TimingInfo * info)
|
||||
{
|
||||
int n;
|
||||
|
||||
info->m_nSamples = 0;
|
||||
info->m_interval_sum.QuadPart = 0;
|
||||
info->m_csName.Format("Timing decomp method 1: bit shift, for %d times\n", ntimes);
|
||||
|
||||
for (n = 0; n < ntimes; n++)
|
||||
{
|
||||
QueryPerformanceCounter(& info->m_start_clk);
|
||||
|
||||
int xblocks, yblocks;
|
||||
|
||||
xblocks = m_DDSD.dwWidth / 4;
|
||||
yblocks = m_DDSD.dwHeight / 4;
|
||||
|
||||
int i,j;
|
||||
|
||||
DWORD * pBase = (DWORD*) m_pDecompBytes;
|
||||
DWORD * pImPos = (DWORD*) pBase; // pos in decompressed data
|
||||
WORD * pPos = (WORD*) m_pCompBytes; // pos in compressed data
|
||||
|
||||
DXTColBlock * pBlock;
|
||||
DXTAlphaBlock3BitLinear * pAlphaBlock;
|
||||
|
||||
Color8888 col_0, col_1, col_2, col_3;
|
||||
WORD wrd;
|
||||
|
||||
// fill alphazero with appropriate value to zero out alpha when
|
||||
// alphazero is ANDed with the image color 32 bit DWORD:
|
||||
col_0.a = 0;
|
||||
col_0.r = col_0.g = col_0.b = 0xff;
|
||||
DWORD alphazero = *((DWORD*) &col_0);
|
||||
|
||||
// ** See DecompressDXT5 code for comments!!
|
||||
for (j = 0; j < yblocks; ++j)
|
||||
{
|
||||
pBlock = (DXTColBlock*) ((DWORD)m_pCompBytes + j * xblocks * 16);
|
||||
for (i = 0; i < xblocks; ++i, ++pBlock)
|
||||
{
|
||||
pAlphaBlock = (DXTAlphaBlock3BitLinear*) pBlock;
|
||||
pBlock++;
|
||||
|
||||
GetColorBlockColors_m1(pBlock, &col_0, &col_1, &col_2, &col_3, wrd);
|
||||
|
||||
pImPos = (DWORD*)((DWORD)pBase + i*16 + (j*4) * m_nWidth * 4);
|
||||
DecodeColorBlock(pImPos, pBlock, m_nWidth, (DWORD*)&col_0, (DWORD*)&col_1,
|
||||
(DWORD*)&col_2, (DWORD*)&col_3);
|
||||
DecodeAlpha3BitLinear(pImPos, pAlphaBlock, m_nWidth, alphazero);
|
||||
}
|
||||
}
|
||||
|
||||
QueryPerformanceCounter(& info->m_end_clk);
|
||||
|
||||
info->m_nSamples ++;
|
||||
info->m_interval_sum.QuadPart += info->m_end_clk.QuadPart - info->m_start_clk.QuadPart;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void CDXTCImage::Time_Decomp5_02(int ntimes, TimingInfo * info)
|
||||
{
|
||||
int n;
|
||||
|
||||
info->m_nSamples = 0;
|
||||
info->m_interval_sum.QuadPart = 0;
|
||||
info->m_csName.Format("Timing decomp method 2: bit field struct, for %d times\n", ntimes);
|
||||
|
||||
for (n = 0; n < ntimes; n++)
|
||||
{
|
||||
QueryPerformanceCounter(& info->m_start_clk);
|
||||
|
||||
int xblocks, yblocks;
|
||||
xblocks = m_DDSD.dwWidth / 4;
|
||||
yblocks = m_DDSD.dwHeight / 4;
|
||||
int i,j;
|
||||
DWORD * pBase = (DWORD*) m_pDecompBytes;
|
||||
DWORD * pImPos = (DWORD*) pBase; // pos in decompressed data
|
||||
WORD * pPos = (WORD*) m_pCompBytes; // pos in compressed data
|
||||
DXTColBlock * pBlock;
|
||||
DXTAlphaBlock3BitLinear * pAlphaBlock;
|
||||
Color8888 col_0, col_1, col_2, col_3;
|
||||
WORD wrd;
|
||||
// fill alphazero with appropriate value to zero out alpha when
|
||||
// alphazero is ANDed with the image color 32 bit DWORD:
|
||||
col_0.a = 0;
|
||||
col_0.r = col_0.g = col_0.b = 0xff;
|
||||
DWORD alphazero = *((DWORD*) &col_0);
|
||||
|
||||
// ** See DecompressDXT5 code for comments!!
|
||||
for (j = 0; j < yblocks; ++j)
|
||||
{
|
||||
pBlock = (DXTColBlock*) ((DWORD)m_pCompBytes + j * xblocks * 16);
|
||||
for (i = 0; i < xblocks; ++i, ++pBlock)
|
||||
{
|
||||
pAlphaBlock = (DXTAlphaBlock3BitLinear*) pBlock;
|
||||
pBlock++;
|
||||
|
||||
GetColorBlockColors_m2(pBlock, &col_0, &col_1, &col_2, &col_3, wrd);
|
||||
|
||||
pImPos = (DWORD*)((DWORD)pBase + i*16 + (j*4) * m_nWidth * 4);
|
||||
DecodeColorBlock(pImPos, pBlock, m_nWidth, (DWORD*)&col_0, (DWORD*)&col_1,
|
||||
(DWORD*)&col_2, (DWORD*)&col_3);
|
||||
DecodeAlpha3BitLinear(pImPos, pAlphaBlock, m_nWidth, alphazero);
|
||||
}
|
||||
}
|
||||
|
||||
QueryPerformanceCounter(& info->m_end_clk);
|
||||
|
||||
info->m_nSamples ++;
|
||||
info->m_interval_sum.QuadPart += info->m_end_clk.QuadPart - info->m_start_clk.QuadPart;
|
||||
}
|
||||
}
|
||||
|
||||
void CDXTCImage::Time_Decomp5_03(int ntimes, TimingInfo * info)
|
||||
{
|
||||
int n;
|
||||
|
||||
info->m_nSamples = 0;
|
||||
info->m_interval_sum.QuadPart = 0;
|
||||
info->m_csName.Format("Timing decomp method 3: bit field struct w/ pre-shift math, for %d times\n", ntimes);
|
||||
|
||||
for (n = 0; n < ntimes; n++)
|
||||
{
|
||||
QueryPerformanceCounter(& info->m_start_clk);
|
||||
|
||||
int xblocks, yblocks;
|
||||
xblocks = m_DDSD.dwWidth / 4;
|
||||
yblocks = m_DDSD.dwHeight / 4;
|
||||
int i,j;
|
||||
DWORD * pBase = (DWORD*) m_pDecompBytes;
|
||||
DWORD * pImPos = (DWORD*) pBase; // pos in decompressed data
|
||||
WORD * pPos = (WORD*) m_pCompBytes; // pos in compressed data
|
||||
DXTColBlock * pBlock;
|
||||
DXTAlphaBlock3BitLinear * pAlphaBlock;
|
||||
Color8888 col_0, col_1, col_2, col_3;
|
||||
WORD wrd;
|
||||
|
||||
// fill alphazero with appropriate value to zero out alpha when
|
||||
// alphazero is ANDed with the image color 32 bit DWORD:
|
||||
col_0.a = 0;
|
||||
col_0.r = col_0.g = col_0.b = 0xff;
|
||||
DWORD alphazero = *((DWORD*) &col_0);
|
||||
|
||||
// ** See DecompressDXT5 code for comments!!
|
||||
for (j = 0; j < yblocks; ++j)
|
||||
{
|
||||
pBlock = (DXTColBlock*) ((DWORD)m_pCompBytes + j * xblocks * 16);
|
||||
for (i = 0; i < xblocks; ++i, ++pBlock)
|
||||
{
|
||||
pAlphaBlock = (DXTAlphaBlock3BitLinear*) pBlock;
|
||||
pBlock++;
|
||||
|
||||
GetColorBlockColors_m3(pBlock, &col_0, &col_1, &col_2, &col_3, wrd);
|
||||
|
||||
pImPos = (DWORD*)((DWORD)pBase + i*16 + (j*4) * m_nWidth * 4);
|
||||
DecodeColorBlock(pImPos, pBlock, m_nWidth, (DWORD*)&col_0, (DWORD*)&col_1,
|
||||
(DWORD*)&col_2, (DWORD*)&col_3);
|
||||
DecodeAlpha3BitLinear(pImPos, pAlphaBlock, m_nWidth, alphazero);
|
||||
}
|
||||
}
|
||||
|
||||
QueryPerformanceCounter(& info->m_end_clk);
|
||||
|
||||
info->m_nSamples ++;
|
||||
info->m_interval_sum.QuadPart += info->m_end_clk.QuadPart - info->m_start_clk.QuadPart;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void CDXTCImage::Time_Decomp5_04(int ntimes, TimingInfo * info)
|
||||
{
|
||||
int n;
|
||||
|
||||
info->m_nSamples = 0;
|
||||
info->m_interval_sum.QuadPart = 0;
|
||||
info->m_csName.Format("Timing decomp method 4: shift extract w/ pre-shift math, for %d times\n", ntimes);
|
||||
|
||||
QueryPerformanceCounter(& info->m_start_clk);
|
||||
|
||||
for (n = 0; n < ntimes; n++)
|
||||
{
|
||||
int xblocks, yblocks;
|
||||
xblocks = m_DDSD.dwWidth / 4;
|
||||
yblocks = m_DDSD.dwHeight / 4;
|
||||
int i,j;
|
||||
DWORD * pBase = (DWORD*) m_pDecompBytes;
|
||||
DWORD * pImPos = (DWORD*) pBase; // pos in decompressed data
|
||||
WORD * pPos = (WORD*) m_pCompBytes; // pos in compressed data
|
||||
DXTColBlock * pBlock;
|
||||
DXTAlphaBlock3BitLinear * pAlphaBlock;
|
||||
Color8888 col_0, col_1, col_2, col_3;
|
||||
WORD wrd;
|
||||
// fill alphazero with appropriate value to zero out alpha when
|
||||
// alphazero is ANDed with the image color 32 bit DWORD:
|
||||
col_0.a = 0;
|
||||
col_0.r = col_0.g = col_0.b = 0xff;
|
||||
DWORD alphazero = *((DWORD*) &col_0);
|
||||
|
||||
// ** See DecompressDXT5 code for comments!!
|
||||
for (j = 0; j < yblocks; ++j)
|
||||
{
|
||||
pBlock = (DXTColBlock*) ((DWORD)m_pCompBytes + j * xblocks * 16);
|
||||
for (i = 0; i < xblocks; ++i, ++pBlock)
|
||||
{
|
||||
pAlphaBlock = (DXTAlphaBlock3BitLinear*) pBlock;
|
||||
pBlock++;
|
||||
|
||||
GetColorBlockColors_m4(pBlock, &col_0, &col_1, &col_2, &col_3, wrd);
|
||||
|
||||
pImPos = (DWORD*)((DWORD)pBase + i*16 + (j*4) * m_nWidth * 4);
|
||||
DecodeColorBlock(pImPos, pBlock, m_nWidth, (DWORD*)&col_0, (DWORD*)&col_1,
|
||||
(DWORD*)&col_2, (DWORD*)&col_3);
|
||||
DecodeAlpha3BitLinear(pImPos, pAlphaBlock, m_nWidth, alphazero);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
QueryPerformanceCounter(& info->m_end_clk);
|
||||
|
||||
info->m_nSamples = ntimes;
|
||||
info->m_interval_sum.QuadPart += info->m_end_clk.QuadPart - info->m_start_clk.QuadPart;
|
||||
|
||||
}
|
||||
*/
|
||||
|
||||
@ -114,9 +114,7 @@ class CDXTCImage
|
||||
|
||||
XDDPIXELFORMAT m_xddPixelFormat;
|
||||
|
||||
bool LoadFromFile(const char * filename); // true if success
|
||||
bool LoadFromMemory(const BYTE * c_pbMap);
|
||||
bool LoadHeaderFromMemory(const BYTE * c_pbMap);
|
||||
bool LoadHeaderFromMemory(const BYTE * c_pbMap, int iSize);
|
||||
bool Copy(int miplevel, BYTE * pbDest, long lDestPitch);
|
||||
|
||||
void Decompress(int miplevel, DWORD * pdwDest);
|
||||
@ -128,16 +126,6 @@ class CDXTCImage
|
||||
VOID DecodePixelFormat(CHAR* strPixelFormat, XDDPIXELFORMAT* pddpf);
|
||||
|
||||
void Unextract(BYTE * pbDest, int iWidth, int iHeight, int iPitch);
|
||||
/*
|
||||
struct TimingInfo; // defined in Image_DXTC.cpp
|
||||
void RunTimingSession(); // run a few methods & time the code
|
||||
|
||||
// must use dxt5 texture
|
||||
void Time_Decomp5_01(int ntimes, TimingInfo * info);
|
||||
void Time_Decomp5_02(int ntimes, TimingInfo * info);
|
||||
void Time_Decomp5_03(int ntimes, TimingInfo * info);
|
||||
void Time_Decomp5_04(int ntimes, TimingInfo * info);
|
||||
*/
|
||||
};
|
||||
|
||||
#endif // #ifndef AFX_IMAGE_DXTC_H__4B89D8D0_7857_11D4_9630_00A0C996DE3D__INCLUDED_
|
||||
|
||||
@ -209,7 +209,8 @@ bool CGraphicImageTexture::CreateFromMemoryFile(UINT bufSize, const void * c_pvB
|
||||
|
||||
static CDXTCImage image;
|
||||
|
||||
if (image.LoadHeaderFromMemory((const BYTE *) c_pvBuf)) // DDS인가 확인
|
||||
// Check whether the file is a DDS
|
||||
if (image.LoadHeaderFromMemory((const BYTE *) c_pvBuf, bufSize))
|
||||
{
|
||||
return (CreateDDSTexture(image, (const BYTE *) c_pvBuf));
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user