mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-18 02:31:31 +00:00
375 lines
7.8 KiB
C
375 lines
7.8 KiB
C
/*
|
|
d_part.c
|
|
|
|
software driver module for drawing particles
|
|
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
static __attribute__ ((used)) const char rcsid[] = "$Id$";
|
|
|
|
#define NH_DEFINE
|
|
#include "namehack.h"
|
|
|
|
#include "QF/sys.h"
|
|
|
|
#include "d_local.h"
|
|
#include "r_internal.h"
|
|
#include "vid_internal.h"
|
|
|
|
|
|
void
|
|
sw32_D_DrawParticle (particle_t *pparticle)
|
|
{
|
|
vec3_t local, transformed;
|
|
float zi;
|
|
short *pz;
|
|
int i, izi, pix, count, u, v;
|
|
|
|
// transform point
|
|
VectorSubtract (pparticle->org, r_origin, local);
|
|
|
|
transformed[0] = DotProduct (local, r_pright);
|
|
transformed[1] = DotProduct (local, r_pup);
|
|
transformed[2] = DotProduct (local, r_ppn);
|
|
|
|
if (transformed[2] < PARTICLE_Z_CLIP)
|
|
return;
|
|
|
|
// project the point
|
|
// FIXME: preadjust sw32_xcenter and sw32_ycenter
|
|
zi = 1.0 / transformed[2];
|
|
u = (int) (sw32_xcenter + zi * transformed[0] + 0.5);
|
|
v = (int) (sw32_ycenter - zi * transformed[1] + 0.5);
|
|
|
|
if ((v > sw32_d_vrectbottom_particle)
|
|
|| (u > sw32_d_vrectright_particle)
|
|
|| (v < sw32_d_vrecty) || (u < sw32_d_vrectx)) {
|
|
return;
|
|
}
|
|
|
|
pz = sw32_d_pzbuffer + (sw32_d_zwidth * v) + u;
|
|
izi = (int) (zi * 0x8000);
|
|
|
|
pix = izi >> sw32_d_pix_shift;
|
|
|
|
if (pix < sw32_d_pix_min)
|
|
pix = sw32_d_pix_min;
|
|
else if (pix > sw32_d_pix_max)
|
|
pix = sw32_d_pix_max;
|
|
|
|
switch(sw32_r_pixbytes)
|
|
{
|
|
case 1:
|
|
{
|
|
byte *pdest = (byte *) sw32_d_viewbuffer + sw32_d_scantable[v] + u,
|
|
pixcolor = pparticle->color;
|
|
switch (pix) {
|
|
case 1:
|
|
count = 1 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
case 2:
|
|
count = 2 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
|
|
if (pz[1] <= izi) {
|
|
pz[1] = izi;
|
|
pdest[1] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
case 3:
|
|
count = 3 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
|
|
if (pz[1] <= izi) {
|
|
pz[1] = izi;
|
|
pdest[1] = pixcolor;
|
|
}
|
|
|
|
if (pz[2] <= izi) {
|
|
pz[2] = izi;
|
|
pdest[2] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
case 4:
|
|
count = 4 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
|
|
if (pz[1] <= izi) {
|
|
pz[1] = izi;
|
|
pdest[1] = pixcolor;
|
|
}
|
|
|
|
if (pz[2] <= izi) {
|
|
pz[2] = izi;
|
|
pdest[2] = pixcolor;
|
|
}
|
|
|
|
if (pz[3] <= izi) {
|
|
pz[3] = izi;
|
|
pdest[3] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
count = pix << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
for (i = 0; i < pix; i++) {
|
|
if (pz[i] <= izi) {
|
|
pz[i] = izi;
|
|
pdest[i] = pixcolor;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 2:
|
|
{
|
|
unsigned short *pdest = (unsigned short *) sw32_d_viewbuffer +
|
|
sw32_d_scantable[v] + u,
|
|
pixcolor = sw32_8to16table[(int) pparticle->color];
|
|
switch (pix) {
|
|
case 1:
|
|
count = 1 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
case 2:
|
|
count = 2 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
|
|
if (pz[1] <= izi) {
|
|
pz[1] = izi;
|
|
pdest[1] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
case 3:
|
|
count = 3 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
|
|
if (pz[1] <= izi) {
|
|
pz[1] = izi;
|
|
pdest[1] = pixcolor;
|
|
}
|
|
|
|
if (pz[2] <= izi) {
|
|
pz[2] = izi;
|
|
pdest[2] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
case 4:
|
|
count = 4 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
|
|
if (pz[1] <= izi) {
|
|
pz[1] = izi;
|
|
pdest[1] = pixcolor;
|
|
}
|
|
|
|
if (pz[2] <= izi) {
|
|
pz[2] = izi;
|
|
pdest[2] = pixcolor;
|
|
}
|
|
|
|
if (pz[3] <= izi) {
|
|
pz[3] = izi;
|
|
pdest[3] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
count = pix << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
for (i = 0; i < pix; i++) {
|
|
if (pz[i] <= izi) {
|
|
pz[i] = izi;
|
|
pdest[i] = pixcolor;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 4:
|
|
{
|
|
int *pdest = (int *) sw32_d_viewbuffer + sw32_d_scantable[v] + u,
|
|
pixcolor = d_8to24table[(int) pparticle->color];
|
|
switch (pix) {
|
|
case 1:
|
|
count = 1 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
case 2:
|
|
count = 2 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
|
|
if (pz[1] <= izi) {
|
|
pz[1] = izi;
|
|
pdest[1] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
case 3:
|
|
count = 3 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
|
|
if (pz[1] <= izi) {
|
|
pz[1] = izi;
|
|
pdest[1] = pixcolor;
|
|
}
|
|
|
|
if (pz[2] <= izi) {
|
|
pz[2] = izi;
|
|
pdest[2] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
case 4:
|
|
count = 4 << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
if (pz[0] <= izi) {
|
|
pz[0] = izi;
|
|
pdest[0] = pixcolor;
|
|
}
|
|
|
|
if (pz[1] <= izi) {
|
|
pz[1] = izi;
|
|
pdest[1] = pixcolor;
|
|
}
|
|
|
|
if (pz[2] <= izi) {
|
|
pz[2] = izi;
|
|
pdest[2] = pixcolor;
|
|
}
|
|
|
|
if (pz[3] <= izi) {
|
|
pz[3] = izi;
|
|
pdest[3] = pixcolor;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
count = pix << sw32_d_y_aspect_shift;
|
|
|
|
for (; count; count--, pz += sw32_d_zwidth,
|
|
pdest += sw32_screenwidth) {
|
|
for (i = 0; i < pix; i++) {
|
|
if (pz[i] <= izi) {
|
|
pz[i] = izi;
|
|
pdest[i] = pixcolor;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
Sys_Error("D_DrawParticles: unsupported r_pixbytes %i",
|
|
sw32_r_pixbytes);
|
|
}
|
|
}
|