mirror of
https://github.com/ZDoom/raze-gles.git
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6d5d415ea5
Note the type change of vplce[] in engine.c: int32_t -> uint32_t. git-svn-id: https://svn.eduke32.com/eduke32@3172 1a8010ca-5511-0410-912e-c29ae57300e0
521 lines
12 KiB
C
521 lines
12 KiB
C
// A.ASM replacement using C
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// Mainly by Ken Silverman, with things melded with my port by
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// Jonathon Fowler (jf@jonof.id.au)
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//
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// "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
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// Ken Silverman's official web site: "http://www.advsys.net/ken"
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// See the included license file "BUILDLIC.TXT" for license info.
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#include "a.h"
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#ifdef ENGINE_USING_A_C
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int32_t krecip(int32_t num); // from engine.c
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#define BITSOFPRECISION 3
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#define BITSOFPRECISIONPOW 8
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extern intptr_t asm1, asm2, asm3, asm4;
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extern int32_t fpuasm, globalx3, globaly3;
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extern void *reciptable;
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static int32_t bpl, transmode = 0;
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static int32_t glogx, glogy, gbxinc, gbyinc, gpinc;
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static char *gbuf, *gpal, *ghlinepal, *gtrans;
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static char *gpal2;
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//Global variable functions
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void setvlinebpl(int32_t dabpl) { bpl = dabpl; }
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void fixtransluscence(intptr_t datransoff) { gtrans = (char *)datransoff; }
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void settransnormal(void) { transmode = 0; }
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void settransreverse(void) { transmode = 1; }
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///// Ceiling/floor horizontal line functions /////
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void sethlinesizes(int32_t logx, int32_t logy, intptr_t bufplc)
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{ glogx = logx; glogy = logy; gbuf = (char *)bufplc; }
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void setpalookupaddress(char *paladdr) { ghlinepal = paladdr; }
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void setuphlineasm4(int32_t bxinc, int32_t byinc) { gbxinc = bxinc; gbyinc = byinc; }
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void hlineasm4(int32_t cnt, int32_t skiploadincs, int32_t paloffs, uint32_t by, uint32_t bx, intptr_t p)
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{
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if (!skiploadincs) { gbxinc = asm1; gbyinc = asm2; }
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{
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const char *const palptr = &ghlinepal[paloffs];
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const char *const buf = gbuf;
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const int32_t bxinc = gbxinc, byinc = gbyinc;
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const int32_t logx = glogx, logy = glogy;
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char *pp = (char *)p;
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for (; cnt>=0; cnt--)
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{
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*pp = palptr[buf[((bx>>(32-logx))<<logy)+(by>>(32-logy))]];
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bx -= bxinc;
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by -= byinc;
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pp--;
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}
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}
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}
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///// Sloped ceiling/floor vertical line functions /////
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void setupslopevlin(int32_t logylogx, intptr_t bufplc, int32_t pinc)
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{
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glogx = (logylogx&255); glogy = (logylogx>>8);
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gbuf = (char *)bufplc; gpinc = pinc;
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}
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void slopevlin(intptr_t p, int32_t i, intptr_t slopaloffs, int32_t cnt, int32_t bx, int32_t by)
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{
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intptr_t *slopalptr;
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int32_t bz, bzinc;
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uint32_t u, v;
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bz = asm3; bzinc = (asm1>>3);
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slopalptr = (intptr_t *)slopaloffs;
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for (; cnt>0; cnt--)
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{
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i = krecip(bz>>6); bz += bzinc;
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u = bx+(int64_t)globalx3*i;
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v = by+(int64_t)globaly3*i;
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(*(char *)p) = *(char *)(((intptr_t)slopalptr[0])+gbuf[((u>>(32-glogx))<<glogy)+(v>>(32-glogy))]);
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slopalptr--;
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p += gpinc;
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}
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}
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///// Wall,face sprite/wall sprite vertical line functions /////
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extern int32_t globaltilesizy;
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static inline uint32_t ourmulscale32(uint32_t a, uint32_t b)
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{
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return ((uint64_t)a*b)>>32;
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}
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static inline int32_t getpix(int32_t logy, const char *buf, uint32_t vplc)
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{
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if (logy != 0)
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return buf[vplc>>logy];
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else
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return buf[ourmulscale32(vplc,globaltilesizy)];
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}
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void setupvlineasm(int32_t neglogy) { glogy = neglogy; }
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// cnt+1 loop iterations!
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int32_t vlineasm1(int32_t vinc, intptr_t paloffs, int32_t cnt, uint32_t vplc, intptr_t bufplc, intptr_t p)
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{
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const char *const buf = (char *)bufplc;
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const char *const pal = (char *)paloffs;
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const int32_t logy = glogy, ourbpl = bpl;
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char *pp = (char *)p;
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cnt++;
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do
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{
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if (logy != 0)
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*pp = pal[buf[vplc>>logy]];
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else
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*pp = pal[buf[ourmulscale32(vplc,globaltilesizy)]];
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pp += ourbpl;
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vplc += vinc;
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}
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while (--cnt);
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return vplc;
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}
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extern intptr_t palookupoffse[4];
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extern uint32_t vplce[4];
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extern int32_t vince[4];
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extern intptr_t bufplce[4];
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// cnt >= 1
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void vlineasm4(int32_t cnt, char *p)
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{
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char ch;
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int32_t i;
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#if 1
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// this gives slightly more stuff in registers in the loop
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// (on x86_64 at least)
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char *const pal[4] = {(char *)palookupoffse[0], (char *)palookupoffse[1], (char *)palookupoffse[2], (char *)palookupoffse[3]};
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char *const buf[4] = {(char *)bufplce[0], (char *)bufplce[1], (char *)bufplce[2], (char *)bufplce[3]};
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const int32_t vinc[4] = {vince[0], vince[1], vince[2], vince[3]};
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uint32_t vplc[4] = {vplce[0], vplce[1], vplce[2], vplce[3]};
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#else
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char *pal[4];
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char *buf[4];
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int32_t vinc[4];
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uint32_t vplc[4];
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Bmemcpy(pal, palookupoffse, sizeof(pal));
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Bmemcpy(buf, bufplce, sizeof(buf));
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Bmemcpy(vinc, vince, sizeof(vinc));
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Bmemcpy(vplc, vplce, sizeof(vplc));
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#endif
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const int32_t logy = glogy, ourbpl = bpl;
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do
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{
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for (i=0; i<4; i++)
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{
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ch = getpix(logy, buf[i], vplc[i]);
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p[i] = pal[i][ch];
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vplc[i] += vinc[i];
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}
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p += ourbpl;
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}
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while (--cnt);
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Bmemcpy(vplce, vplc, sizeof(vplce));
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}
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void setupmvlineasm(int32_t neglogy) { glogy = neglogy; }
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// cnt+1 loop iterations!
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int32_t mvlineasm1(int32_t vinc, intptr_t paloffs, int32_t cnt, uint32_t vplc, intptr_t bufplc, intptr_t p)
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{
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char ch;
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const char *const buf = (char *)bufplc;
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const char *const pal = (char *)paloffs;
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const int32_t logy = glogy, ourbpl = bpl;
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char *pp = (char *)p;
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cnt++;
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do
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{
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ch = getpix(logy, buf, vplc);
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if (ch != 255) *pp = pal[ch];
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pp += ourbpl;
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vplc += vinc;
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}
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while (--cnt);
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return vplc;
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}
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// cnt >= 1
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void mvlineasm4(int32_t cnt, char *p)
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{
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char ch;
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int32_t i;
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char *const pal[4] = {(char *)palookupoffse[0], (char *)palookupoffse[1], (char *)palookupoffse[2], (char *)palookupoffse[3]};
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char *const buf[4] = {(char *)bufplce[0], (char *)bufplce[1], (char *)bufplce[2], (char *)bufplce[3]};
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const int32_t vinc[4] = {vince[0], vince[1], vince[2], vince[3]};
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uint32_t vplc[4] = {vplce[0], vplce[1], vplce[2], vplce[3]};
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const int32_t logy = glogy, ourbpl = bpl;
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do
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{
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for (i=0; i<4; i++)
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{
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ch = getpix(logy, buf[i], vplc[i]);
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if (ch != 255) p[i] = pal[i][ch];
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vplc[i] += vinc[i];
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}
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p += ourbpl;
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}
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while (--cnt);
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Bmemcpy(vplce, vplc, sizeof(vplce));
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}
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void setuptvlineasm(int32_t neglogy) { glogy = neglogy; }
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// cnt+1 loop iterations!
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int32_t tvlineasm1(int32_t vinc, intptr_t paloffs, int32_t cnt, uint32_t vplc, intptr_t bufplc, intptr_t p)
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{
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char ch;
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const char *const buf = (char *)bufplc;
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const char *const pal = (char *)paloffs;
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const char *const trans = (char *)gtrans;
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const int32_t logy = glogy, ourbpl = bpl, transm = transmode;
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char *pp = (char *)p;
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cnt++;
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if (transm)
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{
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do
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{
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ch = getpix(logy, buf, vplc);
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if (ch != 255) *pp = trans[(*pp)|(pal[ch]<<8)];
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pp += ourbpl;
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vplc += vinc;
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}
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while (--cnt);
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}
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else
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{
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do
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{
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ch = getpix(logy, buf, vplc);
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if (ch != 255) *pp = trans[((*pp)<<8)|pal[ch]];
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pp += ourbpl;
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vplc += vinc;
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}
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while (--cnt);
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}
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return vplc;
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}
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void setuptvlineasm2(int32_t neglogy, intptr_t paloffs1, intptr_t paloffs2)
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{
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glogy = neglogy;
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gpal = (char *)paloffs1;
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gpal2 = (char *)paloffs2;
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}
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// Pass: asm1=vinc2, asm2=pend
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// Return: asm1=vplc1, asm2=vplc2
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void tvlineasm2(uint32_t vplc2, int32_t vinc1, intptr_t bufplc1, intptr_t bufplc2, uint32_t vplc1, intptr_t p)
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{
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char ch;
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int32_t cnt = (asm2-p-1)/bpl; // >= 1
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const int32_t vinc2 = asm1;
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const char *const buf1 = (char *)bufplc1;
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const char *const buf2 = (char *)bufplc2;
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const int32_t logy = glogy, ourbpl = bpl, transm = transmode;
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char *pp = (char *)p;
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cnt++;
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if (transm)
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{
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do
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{
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ch = getpix(logy, buf1, vplc1);
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if (ch != 255) pp[0] = gtrans[pp[0]|(gpal[ch]<<8)];
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vplc1 += vinc1;
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ch = getpix(logy, buf2, vplc2);
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if (ch != 255) pp[1] = gtrans[pp[1]|(gpal2[ch]<<8)];
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vplc2 += vinc2;
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pp += ourbpl;
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}
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while (--cnt > 0);
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}
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else
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{
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do
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{
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ch = getpix(logy, buf1, vplc1);
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if (ch != 255) pp[0] = gtrans[(pp[0]<<8)|gpal[ch]];
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vplc1 += vinc1;
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ch = getpix(logy, buf2, vplc2);
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if (ch != 255) pp[1] = gtrans[(pp[1]<<8)|gpal2[ch]];
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vplc2 += vinc2;
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pp += ourbpl;
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}
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while (--cnt);
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}
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asm1 = vplc1;
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asm2 = vplc2;
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}
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//Floor sprite horizontal line functions
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void msethlineshift(int32_t logx, int32_t logy) { glogx = logx; glogy = logy; }
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// cntup16>>16 + 1 iterations
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void mhline(intptr_t bufplc, uint32_t bx, int32_t cntup16, int32_t junk, uint32_t by, intptr_t p)
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{
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char ch;
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const int32_t xinc = asm1, yinc = asm2;
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UNREFERENCED_PARAMETER(junk);
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gbuf = (char *)bufplc;
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gpal = (char *)asm3;
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cntup16>>=16;
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cntup16++;
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do
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{
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ch = gbuf[((bx>>(32-glogx))<<glogy)+(by>>(32-glogy))];
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if (ch != 255) *((char *)p) = gpal[ch];
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bx += xinc;
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by += yinc;
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p++;
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}
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while (--cntup16);
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}
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void tsethlineshift(int32_t logx, int32_t logy) { glogx = logx; glogy = logy; }
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// cntup16>>16 + 1 iterations
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void thline(intptr_t bufplc, uint32_t bx, int32_t cntup16, int32_t junk, uint32_t by, intptr_t p)
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{
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char ch;
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const int32_t xinc = asm1, yinc = asm2;
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UNREFERENCED_PARAMETER(junk);
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gbuf = (char *)bufplc;
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gpal = (char *)asm3;
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cntup16>>=16;
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cntup16++;
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if (transmode)
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{
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do
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{
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ch = gbuf[((bx>>(32-glogx))<<glogy)+(by>>(32-glogy))];
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if (ch != 255) *((char *)p) = gtrans[(*((char *)p))|(gpal[ch]<<8)];
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bx += xinc;
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by += yinc;
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p++;
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}
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while (--cntup16);
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}
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else
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{
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do
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{
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ch = gbuf[((bx>>(32-glogx))<<glogy)+(by>>(32-glogy))];
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if (ch != 255) *((char *)p) = gtrans[((*((char *)p))<<8)|gpal[ch]];
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bx += xinc;
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by += yinc;
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p++;
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}
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while (--cntup16);
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}
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}
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//Rotatesprite vertical line functions
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void setupspritevline(intptr_t paloffs, int32_t bxinc, int32_t byinc, int32_t ysiz)
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{
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gpal = (char *)paloffs;
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gbxinc = bxinc;
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gbyinc = byinc;
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glogy = ysiz;
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}
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void spritevline(int32_t bx, int32_t by, int32_t cnt, intptr_t bufplc, intptr_t p)
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{
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gbuf = (char *)bufplc;
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for (; cnt>1; cnt--)
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{
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(*(char *)p) = gpal[gbuf[(bx>>16)*glogy+(by>>16)]];
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bx += gbxinc;
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by += gbyinc;
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p += bpl;
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}
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}
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//Rotatesprite vertical line functions
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void msetupspritevline(intptr_t paloffs, int32_t bxinc, int32_t byinc, int32_t ysiz)
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{
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gpal = (char *)paloffs;
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gbxinc = bxinc;
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gbyinc = byinc;
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glogy = ysiz;
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}
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void mspritevline(int32_t bx, int32_t by, int32_t cnt, intptr_t bufplc, intptr_t p)
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{
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char ch;
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gbuf = (char *)bufplc;
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for (; cnt>1; cnt--)
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{
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ch = gbuf[(bx>>16)*glogy+(by>>16)];
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if (ch != 255)(*(char *)p) = gpal[ch];
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bx += gbxinc;
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by += gbyinc;
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p += bpl;
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}
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}
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void tsetupspritevline(intptr_t paloffs, int32_t bxinc, int32_t byinc, int32_t ysiz)
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{
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gpal = (char *)paloffs;
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gbxinc = bxinc;
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gbyinc = byinc;
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glogy = ysiz;
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}
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void tspritevline(int32_t bx, int32_t by, int32_t cnt, intptr_t bufplc, intptr_t p)
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{
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char ch;
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gbuf = (char *)bufplc;
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if (transmode)
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{
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for (; cnt>1; cnt--)
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{
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ch = gbuf[(bx>>16)*glogy+(by>>16)];
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if (ch != 255) *((char *)p) = gtrans[(*((char *)p))+(gpal[ch]<<8)];
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bx += gbxinc;
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by += gbyinc;
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p += bpl;
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}
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}
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else
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{
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for (; cnt>1; cnt--)
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{
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ch = gbuf[(bx>>16)*glogy+(by>>16)];
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if (ch != 255) *((char *)p) = gtrans[((*((char *)p))<<8)+gpal[ch]];
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bx += gbxinc;
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by += gbyinc;
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p += bpl;
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}
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}
|
|
}
|
|
|
|
void setupdrawslab(int32_t dabpl, intptr_t pal)
|
|
{ bpl = dabpl; gpal = (char *)pal; }
|
|
|
|
void drawslab(int32_t dx, int32_t v, int32_t dy, int32_t vi, intptr_t vptr, intptr_t p)
|
|
{
|
|
int32_t x;
|
|
|
|
while (dy > 0)
|
|
{
|
|
char c = gpal[(int32_t)(*(char *)((v>>16)+vptr))];
|
|
for (x=0; x < dx; x++)
|
|
((char*)p)[x] = c;
|
|
p += bpl;
|
|
v += vi;
|
|
dy--;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
void stretchhline(intptr_t p0, int32_t u, int32_t cnt, int32_t uinc, intptr_t rptr, intptr_t p)
|
|
{
|
|
p0 = p-(cnt<<2);
|
|
do
|
|
{
|
|
p--;
|
|
*(char *)p = *(char *)((u>>16)+rptr); u -= uinc;
|
|
}
|
|
while (p > p0);
|
|
}
|
|
#endif
|
|
|
|
void mmxoverlay() { }
|
|
|
|
#endif
|
|
/*
|
|
* vim:ts=4:
|
|
*/
|
|
|