📄 fglcopyteximage2d.ps
字号:
1408(the)X1538(width)X1752(of)X1851(the)X1981(texture)X2236(image.)X2504(Must)X2700(be)X2808(0)X2880(or)X2979($2**n)X3211(\304+\304)X3343(2*$)X2 f(border)S1 f3714(for)X3841(some)X1087 4164(integer)N1330($n$.)X2 f554 4298(height)N1 f1087(Speci\256es)X1405(the)X1532(height)X1761(of)X1857(the)X1984(texture)X2236(image.)X2501(Must)X2695(be)X2801(0)X2871(or)X2968($2**m)X3220(\304+\304)X3349(2*$)X2 f(border)S1 f3717(for)X3841(some)X1087 4394(integer)N1330($m$.)X2 f554 4528(border)N1 f1087(Speci\256es)X1396(the)X1514(width)X1716(of)X1803(the)X1921(border.)X2191(Must)X2375(be)X2471(either)X2674(0)X2734(or)X2821(1.)X9 s266 4662(D)N268(DE)X322(ES)X368(SC)X410(CR)X460(RI)X510(IP)X536(PT)X578(TI)X624(IO)X650(ON)X704(N)X3 f10 s554 4758(fglCopyTexImage2D)N1 f1336(de\256nes)X1634(a)X1741(two-dimensional)X2350(texture)X2644(image)X2911(with)X3124(pixels)X3386(from)X3613(the)X3782(current)X3 f554 4854(GL_READ_BUFFER)N1 f1296(.)X554 4988(The)N747(screen-aligned)X1284(pixel)X1512(rectangle)X1875(with)X2085(lower)X2336(left)X2511(corner)X2785(at)X2911(\()X2 f2938(x)X1 f2974(,)X2 f3062(y)X1 f3098(\))X3193(and)X3377(with)X3587(a)X3692(width)X3943(of)X2 f554 5084(width)N1 f731($\304+\3042\304*\304$)X2 f1044(border)X1 f1286(and)X1426(a)X1486(height)X1710(of)X2 f1801(height)X1 f($\304+\3042\304*\304$)S2 f2314(border)X1 f2556(de\256nes)X2807(the)X2929(texture)X3176(array)X3366(at)X3448(the)X3569(mipmap)X3854(level)X554 5180(speci\256ed)N859(by)X2 f959(level)X1 f1111(.)X2 f1171(internalFormat)X1 f1684(speci\256es)X1980(the)X2098(internal)X2363(format)X2597(of)X2684(the)X2802(texture)X3045(array.)X554 5314(The)N700(pixels)X912(in)X995(the)X1114(rectangle)X1430(are)X1550(processed)X1888(exactly)X2141(as)X2229(if)X3 f2300(fglCopyPixels)X1 f2793(had)X2931(been)X3105(called,)X3339(but)X3463(the)X3583(process)X3846(stops)X554 5410(just)N692(before)X921(\256nal)X1086(conversion.)X1501(At)X1604(this)X1742(point)X1929(all)X2031(pixel)X2213(component)X2591(values)X2818(are)X2939(clamped)X3233(to)X3317(the)X3437(range)X3638($[0,1]$)X3894(and)X554 5506(then)N712(converted)X1049(to)X1131(the)X1249(texture's)X1550(internal)X1815(format)X2049(for)X2163(storage)X2415(in)X2497(the)X2615(texel)X2791(array.)X554 5640(Pixel)N743(ordering)X1040(is)X1118(such)X1290(that)X1435(lower)X1643($x$)X1788(and)X1929($y$)X2074(screen)X2305(coordinates)X2700(correspond)X3083(to)X3171(lower)X3380($s$)X3517(and)X3659($t$)X3787(texture)X554 5736(coordinates.)N266 6144(Page)N442(1)X3577(July)X3730(22,)X3850(1997)X2 p%%Page: 2 210 s 0 xH 0 xS 1 f10 f0 96(h)N24(hhh)X4176(h)X4200(hhh)X9 s1 f266 480(F)N268(FG)X310(GL)X364(LC)X410(CO)X460(OP)X514(PY)X556(YT)X610(TE)X656(EX)X702(XI)X756(IM)X782(MA)X848(AG)X902(GE)X956(E2)X1002(2D)X1040(D)X1098(\()X1100(\()X1136(\))X1138(\))X1885(U)X1887(UN)X1941(NI)X1995(IX)X2021(X)X2093(S)X2095(Sy)X2137(ys)X2175(st)X2205(te)X2227(em)X2261(m)X2337(V)X2339(V)X3114(F)X3116(FG)X3158(GL)X3212(LC)X3258(CO)X3308(OP)X3362(PY)X3404(YT)X3458(TE)X3504(EX)X3550(XI)X3604(IM)X3630(MA)X3696(AG)X3750(GE)X3804(E2)X3850(2D)X3888(D)X3946(\()X3948(\()X3984(\))X3986(\))X10 s554 864(If)N629(any)X766(of)X854(the)X973(pixels)X1185(within)X1410(the)X1529(speci\256ed)X1835(rectangle)X2151(of)X2239(the)X2358(current)X3 f2607(GL_READ_BUFFER)X1 f3370(are)X3490(outside)X3743(the)X3863(win-)X554 960(dow)N712(associated)X1062(with)X1224(the)X1342(current)X1590(rendering)X1918(context,)X2194(then)X2352(the)X2470(values)X2695(obtained)X2991(for)X3105(those)X3294(pixels)X3505(are)X3624(unde\256ned.)X9 s266 1094(N)N268(NO)X322(OT)X376(TE)X422(ES)X468(S)X3 f10 s554 1190(fglCopyTexImage2D)N1 f1286(is)X1359(available)X1669(only)X1831(if)X1900(the)X2018(GL)X2145(version)X2401(is)X2474(1.1)X2594(or)X2681(greater.)X554 1324(Texturing)N890(has)X1017(no)X1117(effect)X1321(in)X1403(color)X1588(index)X1786(mode.)X554 1458(1,)N634(2,)X714(3,)X794(and)X930(4)X990(are)X1109(not)X1231(accepted)X1533(values)X1758(for)X2 f1872(internalFormat)X1 f2365(.)X554 1592(An)N672(image)X888(with)X1050(height)X1270(or)X1357(width)X1559(of)X1646(0)X1706(indicates)X2011(a)X2067(NULL)X2301(texture.)X9 s266 1726(E)N268(ER)X314(RR)X364(RO)X414(OR)X468(RS)X518(S)X3 f10 s554 1822(GL_INVALID_ENUM)N1 f1361(is)X1434(generated)X1767(if)X2 f1836(target)X1 f2047(is)X2120(not)X3 f2242(GL_TEXTURE_2D)X1 f2921(.)X3 f554 1956(GL_INVALID_VALUE)N1 f1396(is)X1469(generated)X1802(if)X2 f1871(level)X1 f2043(is)X2116(less)X2256(than)X2414(0.)X3 f554 2090(GL_INVALID_VALUE)N1 f1403(may)X1568(be)X1671(generated)X2011(if)X2 f2087(level)X1 f2266(is)X2346(greater)X2597(than)X2762($log)X2931(sub)X3069(2)X3136(max$,)X3361(where)X3585($max$)X3831(is)X3912(the)X554 2186(returned)N842(value)X1036(of)X3 f1123(GL_MAX_TEXTURE_SIZE)X1 f2117(.)X3 f554 2320(GL_INVALID_VALUE)N1 f1462(is)X1601(generated)X2001(if)X2 f2137(width)X1 f2401(or)X2 f2555(height)X1 f2842(is)X2982(less)X3189(than)X3414(0,)X3561(greater)X3872(than)X554 2416($2\304+\304$)N3 f773(GL_MAX_TEXTURE_SIZE)X1 f1767(,)X1808(or)X1896(if)X2 f1966(width)X1 f2164(or)X2 f2251(height)X1 f2471(cannot)X2705(be)X2801(represented)X3192(as)X3279($2**k)X3499(\304+\304)X3618(2\304*\304$)X2 f3792(border)X1 f554 2512(for)N668(some)X857(integer)X1100($k$.)X3 f554 2646(GL_INVALID_VALUE)N1 f1396(is)X1469(generated)X1802(if)X2 f1871(border)X1 f2109(is)X2182(not)X2304(0)X2364(or)X2451(1.)X3 f554 2780(GL_INVALID_VALUE)N1 f1396(is)X1469(generated)X1802(if)X2 f1871(internalFormat)X1 f2384(is)X2457(not)X2579(one)X2715(of)X2802(the)X2920(allowable)X3252(values.)X3 f554 2914(GL_INVALID_OPERATION)N1 f1601(is)X1676(generated)X2011(if)X3 f2082(fglCopyTexImage2D)X1 f2816(is)X2891(executed)X3199(between)X3489(the)X3609(execution)X3943(of)X3 f554 3010(fglBegin)N1 f858(and)X994(the)X1112(corresponding)X1591(execution)X1923(of)X3 f2010(fglEnd)X1 f2240(.)X9 s266 3144(A)N268(AS)X322(SS)X364(SO)X406(OC)X460(CI)X510(IA)X536(AT)X590(TE)X636(ED)X682(D)X766(G)X768(GE)X822(ET)X868(TS)X914(S)X3 f10 s554 3240(fglGetTexImage)N554 3336(fglIsEnabled)N1 f1008(with)X1170(argument)X3 f1493(GL_TEXTURE_2D)X1 f9 s266 3470(S)N268(SE)X310(EE)X356(E)X432(A)X434(AL)X488(LS)X534(SO)X576(O)X3 f10 s554 3566(fglCopyPixels)N1 f1025(,)X3 f1100(fglCopyTexImage1D)X1 f1812(,)X3 f1887(fglCopyTexSubImage1D)X1 f2731(,)X3 f2806(fglCopyTexSubImage2D)X1 f3650(,)X3 f3725(fglPixel-)X554 3662(Store)N1 f737(,)X3 f780(fglPixelTransfer)X1 f1341(,)X3 f1384(fglTexEnv)X1 f1739(,)X3 f1782(fglTexGen)X1 f(,)S3 f2184(fglTexImage1D)X1 f2714(,)X3 f2756(fglTexImage2D)X1 f3286(,)X3 f3328(fglTexSubImage1D)X1 f3990(,)X3 f554 3758(fglTexSubImage2D)N1 f1216(,)X3 f554 3854 0.2232(fglTexParameter)AN1 f266 6144(July)N419(22,)X539(1997)X3794(Page)X3970(2)X10 f0 6428(h)N24(hhh)X4176(h)X4200(hhh)X2 p%%Trailerxtxs⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -