diff options
Diffstat (limited to 'src/post/goom/drawmethods.h')
| -rw-r--r-- | src/post/goom/drawmethods.h | 212 |
1 files changed, 207 insertions, 5 deletions
diff --git a/src/post/goom/drawmethods.h b/src/post/goom/drawmethods.h index 4ad83b047..408dbc2c5 100644 --- a/src/post/goom/drawmethods.h +++ b/src/post/goom/drawmethods.h @@ -1,17 +1,27 @@ #ifndef _DRAWMETHODS_H #define _DRAWMETHODS_H -#include "goom_config.h" +#include "config.h" #define DRAWMETHOD_NORMAL(adr,col) {*(adr) = (col);} -/* #ifdef MMX */ -#if 0 +#ifdef HAVE_MMX +#include "mmx.h" + #define DRAWMETHOD_PLUS(_out,_backbuf,_col) \ {\ +movd_m2r (_backbuf, mm0); \ +paddusb_m2r (_col, mm0); \ +movd_r2m (mm0, _out); \ +} + +/* +paddusb (_out __asm__ ("movd %%eax,%%mm0\n movd %%edx,%%mm1\n paddusb %%mm1,%%mm0\n movd %%mm0,%%eax"\ :"=eax"(_out):"eax"(_backbuf),"edx"(_col));\ } +*/ + #else #define DRAWMETHOD_PLUS(_out,_backbuf,_col) \ {\ @@ -31,11 +41,203 @@ __asm__ ("movd %%eax,%%mm0\n movd %%edx,%%mm1\n paddusb %%mm1,%%mm0\n movd %%mm #define DRAWMETHOD_OR(adr,col) {*(adr)|=(col);} -/* #ifdef MMX */ -#if 0 +#ifdef HAVE_MMX #define DRAWMETHOD_DONE() {__asm__ __volatile__ ("emms");} #else #define DRAWMETHOD_DONE() {} #endif +#ifndef DRAWMETHOD +#define DRAWMETHOD DRAWMETHOD_PLUS(*p,*p,col) +//#define DRAWMETHOD *p=col + +static void +inline draw_line (int *data, int x1, int y1, int x2, int y2, int col, int screenx, + int screeny) +{ + int x, y, dx, dy, yy, xx;// am, tmp; + int *p; + +// DATA32 *p; +// DATA8 aaa, nr, ng, nb, rr, gg, bb, aa, na; + + if ((y1 < 0) || (y2 < 0) || (x1 < 0) || (x2 < 0) || (y1 >= screeny) || (y2 >= screeny) || (x1 >= screenx) || (x2 >= screenx)) return; + + /* clip to top edge + if ((y1 < 0) && (y2 < 0)) + return; + + if (y1 < 0) { + x1 += (y1 * (x1 - x2)) / (y2 - y1); + y1 = 0; + } + if (y2 < 0) { + x2 += (y2 * (x1 - x2)) / (y2 - y1); + y2 = 0; + } + + /* clip to bottom edge + if ((y1 >= screeny) && (y2 >= screeny)) + return; + if (y1 >= screeny) { + x1 -= ((screeny - y1) * (x1 - x2)) / (y2 - y1); + y1 = screeny - 1; + } + if (y2 >= screeny) { + x2 -= ((screeny - y2) * (x1 - x2)) / (y2 - y1); + y2 = screeny - 1; + } + /* clip to left edge + if ((x1 < 0) && (x2 < 0)) + return; + if (x1 < 0) { + y1 += (x1 * (y1 - y2)) / (x2 - x1); + x1 = 0; + } + if (x2 < 0) { + y2 += (x2 * (y1 - y2)) / (x2 - x1); + x2 = 0; + } + /* clip to right edge + if ((x1 >= screenx) && (x2 >= screenx)) + return; + if (x1 >= screenx) { + y1 -= ((screenx - x1) * (y1 - y2)) / (x2 - x1); + x1 = screenx - 1; + } + if (x2 >= screenx) { + y2 -= ((screenx - x2) * (y1 - y2)) / (x2 - x1); + x2 = screenx - 1; + } + */ + dx = x2 - x1; + dy = y2 - y1; + if (x1 > x2) { + int tmp; + + tmp = x1; + x1 = x2; + x2 = tmp; + tmp = y1; + y1 = y2; + y2 = tmp; + dx = x2 - x1; + dy = y2 - y1; + } + + /* vertical line */ + if (dx == 0) { + if (y1 < y2) { + p = &(data[(screenx * y1) + x1]); + for (y = y1; y <= y2; y++) { + DRAWMETHOD; + p += screenx; + } + } + else { + p = &(data[(screenx * y2) + x1]); + for (y = y2; y <= y1; y++) { + DRAWMETHOD; + p += screenx; + } + } + return; + } + /* horizontal line */ + if (dy == 0) { + if (x1 < x2) { + p = &(data[(screenx * y1) + x1]); + for (x = x1; x <= x2; x++) { + DRAWMETHOD; + p++; + } + return; + } + else { + p = &(data[(screenx * y1) + x2]); + for (x = x2; x <= x1; x++) { + DRAWMETHOD; + p++; + } + return; + } + } + /* 1 */ + /* \ */ + /* \ */ + /* 2 */ + if (y2 > y1) { + /* steep */ + if (dy > dx) { + dx = ((dx << 16) / dy); + x = x1 << 16; + for (y = y1; y <= y2; y++) { + xx = x >> 16; + p = &(data[(screenx * y) + xx]); + DRAWMETHOD; + if (xx < (screenx - 1)) { + p++; +// DRAWMETHOD; + } + x += dx; + } + return; + } + /* shallow */ + else { + dy = ((dy << 16) / dx); + y = y1 << 16; + for (x = x1; x <= x2; x++) { + yy = y >> 16; + p = &(data[(screenx * yy) + x]); + DRAWMETHOD; + if (yy < (screeny - 1)) { + p += screeny; +// DRAWMETHOD; + } + y += dy; + } + } + } + /* 2 */ + /* / */ + /* / */ + /* 1 */ + else { + /* steep */ + if (-dy > dx) { + dx = ((dx << 16) / -dy); + x = (x1 + 1) << 16; + for (y = y1; y >= y2; y--) { + xx = x >> 16; + p = &(data[(screenx * y) + xx]); + DRAWMETHOD; + if (xx < (screenx - 1)) { + p--; +// DRAWMETHOD; + } + x += dx; + } + return; + } + /* shallow */ + else { + dy = ((dy << 16) / dx); + y = y1 << 16; + for (x = x1; x <= x2; x++) { + yy = y >> 16; + p = &(data[(screenx * yy) + x]); + DRAWMETHOD; + if (yy < (screeny - 1)) { + p += screeny; +// DRAWMETHOD; + } + y += dy; + } + return; + } + } +} +#endif + #endif |