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402 lines
10 KiB
C
402 lines
10 KiB
C
/* xmmx.c
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eXtended MultiMedia eXtensions GCC interface library for IA32.
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To use this library, simply include this header file
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and compile with GCC. You MUST have inlining enabled
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in order for xmmx_ok() to work; this can be done by
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simply using -O on the GCC command line.
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Compiling with -DXMMX_TRACE will cause detailed trace
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output to be sent to stderr for each mmx operation.
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This adds lots of code, and obviously slows execution to
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a crawl, but can be very useful for debugging.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
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LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR ANY PARTICULAR PURPOSE.
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1999 by R. Fisher
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Based on libmmx, 1997-99 by H. Dietz and R. Fisher
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Notes:
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It appears that the latest gas has the pand problem fixed, therefore
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I'll undefine BROKEN_PAND by default.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "goom_config.h"
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#ifdef HAVE_MMX
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/* a definir pour avoir exactement le meme resultat que la fonction C
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* (un chouillat plus lent).. mais la difference est assez peu notable.
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*/
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// #define STRICT_COMPAT
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#define BUFFPOINTNB 16
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#define BUFFPOINTMASK 0xffff
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#define BUFFINCR 0xff
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#define sqrtperte 16
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/* faire : a % sqrtperte <=> a & pertemask*/
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#define PERTEMASK 0xf
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/* faire : a / sqrtperte <=> a >> PERTEDEC*/
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#define PERTEDEC 4
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/*#define MMX_TRACE*/
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#include "mmx.h"
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/*#include "xmmx.h"*/
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#include "goom_graphic.h"
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int
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xmmx_supported (void)
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{
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return (mm_support () & 0x8) >> 3;
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}
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void
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zoom_filter_xmmx (int prevX, int prevY,
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Pixel * expix1, Pixel * expix2,
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int *lbruS, int *lbruD, int buffratio, int precalCoef[16][16])
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{
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int bufsize = prevX * prevY; /* taille du buffer */
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volatile int loop; /* variable de boucle */
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mmx_t *brutS = (mmx_t *) lbruS; /* buffer de transformation source */
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mmx_t *brutD = (mmx_t *) lbruD; /* buffer de transformation dest */
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volatile mmx_t prevXY;
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volatile mmx_t ratiox;
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/* volatile mmx_t interpix; */
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expix1[0].val = expix1[prevX - 1].val = expix1[prevX * prevY - 1].val =
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expix1[prevX * prevY - prevX].val = 0;
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prevXY.ud[0] = (prevX - 1) << PERTEDEC;
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prevXY.ud[1] = (prevY - 1) << PERTEDEC;
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ratiox.d[0] = buffratio;
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ratiox.d[1] = buffratio;
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asm volatile ("\n\t movq %[ratio], %%mm6" "\n\t pslld $16, %%mm6" /* mm6 = [rat16=buffratio<<16 | rat16=buffratio<<16] */
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"\n\t pxor %%mm7, %%mm7" /* mm7 = 0 */
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::[ratio] "m" (ratiox));
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loop = 0;
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/*
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* NOTE : mm6 et mm7 ne sont pas modifies dans la boucle.
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*/
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while (loop < bufsize) {
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/* Thread #1
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* pre : mm6 = [rat16|rat16]
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* post : mm0 = S + ((D-S)*rat16 format [X|Y]
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* modified = mm0,mm1,mm2
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*/
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asm volatile ("#1 \n\t movq 0(%[brutS]), %%mm0" "#1 \n\t movq 0(%[brutD]), %%mm1" "#1 \n\t psubd %%mm0, %%mm1" /* mm1 = D - S */
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"#1 \n\t movq %%mm1, %%mm2" /* mm2 = D - S */
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"#1 \n\t pslld $16, %%mm1" "#1 \n\t pmullw %%mm6, %%mm2" "#1 \n\t pmulhuw %%mm6, %%mm1" "#1 \n\t pslld $16, %%mm0" "#1 \n\t paddd %%mm2, %%mm1" /* mm1 = (D - S) * buffratio >> 16 */
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"#1 \n\t paddd %%mm1, %%mm0" /* mm0 = S + mm1 */
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"#1 \n\t psrld $16, %%mm0"::[brutS] "r" (&brutS[loop]),
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[brutD] "r" (&brutD[loop])
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); /* mm0 = S */
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/*
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* pre : mm0 : position vector on screen
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* prevXY : coordinate of the lower-right point on screen
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* post : clipped mm0
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* modified : mm0,mm1,mm2
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*/
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asm volatile
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("#1 \n\t movq %[prevXY], %%mm1" "#1 \n\t pcmpgtd %%mm0, %%mm1"
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/* mm0 en X contient (idem pour Y) :
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* 1111 si prevXY > px
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* 0000 si prevXY <= px */
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#ifdef STRICT_COMPAT
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"#1 \n\t movq %%mm1, %%mm2"
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"#1 \n\t punpckhdq %%mm2, %%mm2"
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"#1 \n\t punpckldq %%mm1, %%mm1" "#1 \n\t pand %%mm2, %%mm0"
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#endif
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"#1 \n\t pand %%mm1, %%mm0" /* on met a zero la partie qui deborde */
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::[prevXY] "m" (prevXY));
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/* Thread #2
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* pre : mm0 : clipped position on screen
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*
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* post : mm3 : coefs for this position
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* mm1 : X vector [0|X]
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*
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* modif : eax,esi
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*/
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__asm__ __volatile__ ("#2 \n\t movd %%mm0,%%esi"
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"#2 \n\t movq %%mm0,%%mm1"
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"#2 \n\t andl $15,%%esi"
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"#2 \n\t psrlq $32,%%mm1"
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"#2 \n\t shll $6,%%esi"
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"#2 \n\t movd %%mm1,%%eax"
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"#2 \n\t addl %[precalCoef],%%esi"
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"#2 \n\t andl $15,%%eax"
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"#2 \n\t movd (%%esi,%%eax,4),%%mm3"::[precalCoef]
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"g" (precalCoef):"eax", "esi");
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/*
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* extraction des coefficients... (Thread #3)
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*
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* pre : coef dans mm3
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*
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* post : coef extraits dans mm3 (c1 & c2)
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* et mm4 (c3 & c4)
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*
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* modif : mm5
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*/
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/* (Thread #4)
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* pre : mm0 : Y pos [*|Y]
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* mm1 : X pos [*|X]
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*
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* post : mm0 : expix1[position]
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* mm2 : expix1[position+largeur]
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*
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* modif : eax, esi
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*/
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__asm__ __volatile__ ("#2 \n\t psrld $4, %%mm0" "#2 \n\t psrld $4, %%mm1" /* PERTEDEC = $4 */
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"#4 \n\t movd %%mm1,%%eax"
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"#3 \n\t movq %%mm3,%%mm5"
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"#4 \n\t mull %[prevX]"
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"#4 \n\t movd %%mm0,%%esi"
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"#3 \n\t punpcklbw %%mm5, %%mm3"
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"#4 \n\t addl %%esi, %%eax"
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"#3 \n\t movq %%mm3, %%mm4"
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"#3 \n\t movq %%mm3, %%mm5"
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"#4 \n\t movl %[expix1], %%esi"
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"#3 \n\t punpcklbw %%mm5, %%mm3"
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"#4 \n\t movq (%%esi,%%eax,4),%%mm0"
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"#3 \n\t punpckhbw %%mm5, %%mm4"
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"#4 \n\t addl %[prevX],%%eax"
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"#4 \n\t movq (%%esi,%%eax,4),%%mm2"::[expix1] "g" (expix1)
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,[prevX] "g" (prevX)
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:"eax", "esi", "edx");
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/*
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* pre : mm0 : expix1[position]
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* mm2 : expix1[position+largeur]
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* mm3 & mm4 : coefs
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*/
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/* recopie des deux premiers pixels dans mm0 et mm1 */
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movq_r2r (mm0, mm1); /* b1-v1-r1-a1-b2-v2-r2-a2 */
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/* depackage du premier pixel */
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punpcklbw_r2r (mm7, mm0); /* 00-b2-00-v2-00-r2-00-a2 */
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/* extraction des coefficients... */
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movq_r2r (mm3, mm5); /* c2-c2-c2-c2-c1-c1-c1-c1 */
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/*^en parrallele^ *//* depackage du 2ieme pixel */
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/*^ */ punpckhbw_r2r (mm7, mm1);
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/* 00-b1-00-v1-00-r1-00-a1 */
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punpcklbw_r2r (mm7, mm5); /* 00-c1-00-c1-00-c1-00-c1 */
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punpckhbw_r2r (mm7, mm3); /* 00-c2-00-c2-00-c2-00-c2 */
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/* multiplication des pixels par les coefficients */
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pmullw_r2r (mm5, mm0); /* c1*b2-c1*v2-c1*r2-c1*a2 */
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pmullw_r2r (mm3, mm1); /* c2*b1-c2*v1-c2*r1-c2*a1 */
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paddw_r2r (mm1, mm0);
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/* ...extraction des 2 derniers coefficients */
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movq_r2r (mm4, mm5); /* c4-c4-c4-c4-c3-c3-c3-c3 */
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punpcklbw_r2r (mm7, mm4); /* 00-c3-00-c3-00-c3-00-c3 */
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punpckhbw_r2r (mm7, mm5); /* 00-c4-00-c4-00-c4-00-c4 */
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/* recuperation des 2 derniers pixels */
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movq_r2r (mm2, mm1);
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/* depackage des pixels */
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punpcklbw_r2r (mm7, mm1);
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punpckhbw_r2r (mm7, mm2);
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/* multiplication pas les coeffs */
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pmullw_r2r (mm4, mm1);
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pmullw_r2r (mm5, mm2);
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/* ajout des valeurs obtenues <20> la valeur finale */
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paddw_r2r (mm1, mm0);
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paddw_r2r (mm2, mm0);
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/* division par 256 = 16+16+16+16, puis repackage du pixel final */
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psrlw_i2r (8, mm0);
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packuswb_r2r (mm7, mm0);
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movd_r2m (mm0, expix2[loop]);
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++loop;
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}
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/* this was femms, which is AMD 3dnow */
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__asm__ __volatile__ ("emms\n");
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}
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#define DRAWMETHOD_PLUS_XMMX(_out,_backbuf,_col) \
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{ \
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movd_m2r(_backbuf, mm0); \
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paddusb_m2r(_col, mm0); \
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movd_r2m(mm0, _out); \
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}
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#define DRAWMETHOD DRAWMETHOD_PLUS_XMMX(*p,*p,col)
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void
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draw_line_xmmx (Pixel * data, int x1, int y1, int x2, int y2, int col,
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int screenx, int screeny)
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{
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int x, y, dx, dy, yy, xx;
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Pixel *p;
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if ((y1 < 0) || (y2 < 0) || (x1 < 0) || (x2 < 0) || (y1 >= screeny)
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|| (y2 >= screeny) || (x1 >= screenx) || (x2 >= screenx))
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goto end_of_line;
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dx = x2 - x1;
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dy = y2 - y1;
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if (x1 >= x2) {
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int tmp;
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tmp = x1;
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x1 = x2;
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x2 = tmp;
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tmp = y1;
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y1 = y2;
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y2 = tmp;
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dx = x2 - x1;
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dy = y2 - y1;
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}
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/* vertical line */
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if (dx == 0) {
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if (y1 < y2) {
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p = &(data[(screenx * y1) + x1]);
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for (y = y1; y <= y2; y++) {
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DRAWMETHOD;
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p += screenx;
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}
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} else {
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p = &(data[(screenx * y2) + x1]);
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for (y = y2; y <= y1; y++) {
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DRAWMETHOD;
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p += screenx;
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}
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}
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goto end_of_line;
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}
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/* horizontal line */
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if (dy == 0) {
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if (x1 < x2) {
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p = &(data[(screenx * y1) + x1]);
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for (x = x1; x <= x2; x++) {
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DRAWMETHOD;
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p++;
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}
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goto end_of_line;
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} else {
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p = &(data[(screenx * y1) + x2]);
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for (x = x2; x <= x1; x++) {
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DRAWMETHOD;
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p++;
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}
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goto end_of_line;
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}
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}
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/* 1 */
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/* \ */
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/* \ */
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/* 2 */
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if (y2 > y1) {
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/* steep */
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if (dy > dx) {
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dx = ((dx << 16) / dy);
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x = x1 << 16;
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for (y = y1; y <= y2; y++) {
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xx = x >> 16;
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p = &(data[(screenx * y) + xx]);
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DRAWMETHOD;
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if (xx < (screenx - 1)) {
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p++;
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/* DRAWMETHOD; */
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}
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x += dx;
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}
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goto end_of_line;
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}
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/* shallow */
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else {
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dy = ((dy << 16) / dx);
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y = y1 << 16;
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for (x = x1; x <= x2; x++) {
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yy = y >> 16;
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p = &(data[(screenx * yy) + x]);
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DRAWMETHOD;
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if (yy < (screeny - 1)) {
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p += screeny;
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/* DRAWMETHOD; */
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}
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y += dy;
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}
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}
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}
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/* 2 */
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/* / */
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/* / */
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/* 1 */
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else {
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/* steep */
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if (-dy > dx) {
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dx = ((dx << 16) / -dy);
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x = (x1 + 1) << 16;
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for (y = y1; y >= y2; y--) {
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xx = x >> 16;
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p = &(data[(screenx * y) + xx]);
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DRAWMETHOD;
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if (xx < (screenx - 1)) {
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p--;
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/* DRAWMETHOD; */
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}
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x += dx;
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}
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goto end_of_line;
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}
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/* shallow */
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else {
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dy = ((dy << 16) / dx);
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y = y1 << 16;
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for (x = x1; x <= x2; x++) {
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yy = y >> 16;
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p = &(data[(screenx * yy) + x]);
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DRAWMETHOD;
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if (yy < (screeny - 1)) {
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p += screeny;
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/* DRAWMETHOD; */
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}
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y += dy;
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}
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goto end_of_line;
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}
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}
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end_of_line:
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/* this was femms, which is AMD 3dnow */
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__asm__ __volatile__ ("emms\n");
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}
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#else
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int
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xmmx_supported (void)
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{
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return (0);
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}
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#endif
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