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This commit is contained in:
Zephaniah E. Hull 1999-12-31 04:41:57 +00:00
parent f5c91c88af
commit 1def055dcb
20 changed files with 0 additions and 9181 deletions
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149
qw_client/d_copy.s
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@ -1,149 +0,0 @@
//
// d_copy.s
// x86 assembly-language screen copying code.
//
#include "asm_i386.h"
#include "quakeasm.h"
#include "asm_draw.h"
.data
LCopyWidth: .long 0
LBlockSrcStep: .long 0
LBlockDestStep: .long 0
LSrcDelta: .long 0
LDestDelta: .long 0
#define bufptr 4+16
// copies 16 rows per plane at a pop; idea is that 16*512 = 8k, and since
// no Mode X mode is wider than 360, all the data should fit in the cache for
// the passes for the next 3 planes
.text
.globl C(VGA_UpdatePlanarScreen)
C(VGA_UpdatePlanarScreen):
pushl %ebp // preserve caller's stack frame
pushl %edi
pushl %esi // preserve register variables
pushl %ebx
movl C(VGA_bufferrowbytes),%eax
shll $1,%eax
movl %eax,LBlockSrcStep
movl C(VGA_rowbytes),%eax
shll $1,%eax
movl %eax,LBlockDestStep
movl $0x3C4,%edx
movb $2,%al
outb %al,%dx // point the SC to the Map Mask
incl %edx
movl bufptr(%esp),%esi
movl C(VGA_pagebase),%edi
movl C(VGA_height),%ebp
shrl $1,%ebp
movl C(VGA_width),%ecx
movl C(VGA_bufferrowbytes),%eax
subl %ecx,%eax
movl %eax,LSrcDelta
movl C(VGA_rowbytes),%eax
shll $2,%eax
subl %ecx,%eax
movl %eax,LDestDelta
shrl $4,%ecx
movl %ecx,LCopyWidth
LRowLoop:
movb $1,%al
LPlaneLoop:
outb %al,%dx
movb $2,%ah
pushl %esi
pushl %edi
LRowSetLoop:
movl LCopyWidth,%ecx
LColumnLoop:
movb 12(%esi),%bh
movb 8(%esi),%bl
shll $16,%ebx
movb 4(%esi),%bh
movb (%esi),%bl
movl %ebx,(%edi)
addl $16,%esi
addl $4,%edi
decl %ecx
jnz LColumnLoop
addl LDestDelta,%edi
addl LSrcDelta,%esi
decb %ah
jnz LRowSetLoop
popl %edi
popl %esi
incl %esi
shlb $1,%al
cmpb $16,%al
jnz LPlaneLoop
subl $4,%esi
addl LBlockSrcStep,%esi
addl LBlockDestStep,%edi
decl %ebp
jnz LRowLoop
popl %ebx // restore register variables
popl %esi
popl %edi
popl %ebp // restore the caller's stack frame
ret
#define srcptr 4+16
#define destptr 8+16
#define width 12+16
#define height 16+16
#define srcrowbytes 20+16
#define destrowbytes 24+16
.globl C(VGA_UpdateLinearScreen)
C(VGA_UpdateLinearScreen):
pushl %ebp // preserve caller's stack frame
pushl %edi
pushl %esi // preserve register variables
pushl %ebx
cld
movl srcptr(%esp),%esi
movl destptr(%esp),%edi
movl width(%esp),%ebx
movl srcrowbytes(%esp),%eax
subl %ebx,%eax
movl destrowbytes(%esp),%edx
subl %ebx,%edx
shrl $2,%ebx
movl height(%esp),%ebp
LLRowLoop:
movl %ebx,%ecx
rep/movsl (%esi),(%edi)
addl %eax,%esi
addl %edx,%edi
decl %ebp
jnz LLRowLoop
popl %ebx // restore register variables
popl %esi
popl %edi
popl %ebp // restore the caller's stack frame
ret

1037
qw_client/d_draw.s
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File diff suppressed because it is too large Load diff

974
qw_client/d_draw16.s
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/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//
// d_draw16.s
// x86 assembly-language horizontal 8-bpp span-drawing code, with 16-pixel
// subdivision.
//
#include "asm_i386.h"
#include "quakeasm.h"
#include "asm_draw.h"
#include "d_ifacea.h"
#if id386
//----------------------------------------------------------------------
// 8-bpp horizontal span drawing code for polygons, with no transparency and
// 16-pixel subdivision.
//
// Assumes there is at least one span in pspans, and that every span
// contains at least one pixel
//----------------------------------------------------------------------
.data
.text
// out-of-line, rarely-needed clamping code
LClampHigh0:
movl C(bbextents),%esi
jmp LClampReentry0
LClampHighOrLow0:
jg LClampHigh0
xorl %esi,%esi
jmp LClampReentry0
LClampHigh1:
movl C(bbextentt),%edx
jmp LClampReentry1
LClampHighOrLow1:
jg LClampHigh1
xorl %edx,%edx
jmp LClampReentry1
LClampLow2:
movl $4096,%ebp
jmp LClampReentry2
LClampHigh2:
movl C(bbextents),%ebp
jmp LClampReentry2
LClampLow3:
movl $4096,%ecx
jmp LClampReentry3
LClampHigh3:
movl C(bbextentt),%ecx
jmp LClampReentry3
LClampLow4:
movl $4096,%eax
jmp LClampReentry4
LClampHigh4:
movl C(bbextents),%eax
jmp LClampReentry4
LClampLow5:
movl $4096,%ebx
jmp LClampReentry5
LClampHigh5:
movl C(bbextentt),%ebx
jmp LClampReentry5
#define pspans 4+16
.align 4
.globl C(D_DrawSpans16)
C(D_DrawSpans16):
pushl %ebp // preserve caller's stack frame
pushl %edi
pushl %esi // preserve register variables
pushl %ebx
//
// set up scaled-by-16 steps, for 16-long segments; also set up cacheblock
// and span list pointers
//
// TODO: any overlap from rearranging?
flds C(d_sdivzstepu)
fmuls fp_16
movl C(cacheblock),%edx
flds C(d_tdivzstepu)
fmuls fp_16
movl pspans(%esp),%ebx // point to the first span descriptor
flds C(d_zistepu)
fmuls fp_16
movl %edx,pbase // pbase = cacheblock
fstps zi16stepu
fstps tdivz16stepu
fstps sdivz16stepu
LSpanLoop:
//
// set up the initial s/z, t/z, and 1/z on the FP stack, and generate the
// initial s and t values
//
// FIXME: pipeline FILD?
fildl espan_t_v(%ebx)
fildl espan_t_u(%ebx)
fld %st(1) // dv | du | dv
fmuls C(d_sdivzstepv) // dv*d_sdivzstepv | du | dv
fld %st(1) // du | dv*d_sdivzstepv | du | dv
fmuls C(d_sdivzstepu) // du*d_sdivzstepu | dv*d_sdivzstepv | du | dv
fld %st(2) // du | du*d_sdivzstepu | dv*d_sdivzstepv | du | dv
fmuls C(d_tdivzstepu) // du*d_tdivzstepu | du*d_sdivzstepu |
// dv*d_sdivzstepv | du | dv
fxch %st(1) // du*d_sdivzstepu | du*d_tdivzstepu |
// dv*d_sdivzstepv | du | dv
faddp %st(0),%st(2) // du*d_tdivzstepu |
// du*d_sdivzstepu + dv*d_sdivzstepv | du | dv
fxch %st(1) // du*d_sdivzstepu + dv*d_sdivzstepv |
// du*d_tdivzstepu | du | dv
fld %st(3) // dv | du*d_sdivzstepu + dv*d_sdivzstepv |
// du*d_tdivzstepu | du | dv
fmuls C(d_tdivzstepv) // dv*d_tdivzstepv |
// du*d_sdivzstepu + dv*d_sdivzstepv |
// du*d_tdivzstepu | du | dv
fxch %st(1) // du*d_sdivzstepu + dv*d_sdivzstepv |
// dv*d_tdivzstepv | du*d_tdivzstepu | du | dv
fadds C(d_sdivzorigin) // sdivz = d_sdivzorigin + dv*d_sdivzstepv +
// du*d_sdivzstepu; stays in %st(2) at end
fxch %st(4) // dv | dv*d_tdivzstepv | du*d_tdivzstepu | du |
// s/z
fmuls C(d_zistepv) // dv*d_zistepv | dv*d_tdivzstepv |
// du*d_tdivzstepu | du | s/z
fxch %st(1) // dv*d_tdivzstepv | dv*d_zistepv |
// du*d_tdivzstepu | du | s/z
faddp %st(0),%st(2) // dv*d_zistepv |
// dv*d_tdivzstepv + du*d_tdivzstepu | du | s/z
fxch %st(2) // du | dv*d_tdivzstepv + du*d_tdivzstepu |
// dv*d_zistepv | s/z
fmuls C(d_zistepu) // du*d_zistepu |
// dv*d_tdivzstepv + du*d_tdivzstepu |
// dv*d_zistepv | s/z
fxch %st(1) // dv*d_tdivzstepv + du*d_tdivzstepu |
// du*d_zistepu | dv*d_zistepv | s/z
fadds C(d_tdivzorigin) // tdivz = d_tdivzorigin + dv*d_tdivzstepv +
// du*d_tdivzstepu; stays in %st(1) at end
fxch %st(2) // dv*d_zistepv | du*d_zistepu | t/z | s/z
faddp %st(0),%st(1) // dv*d_zistepv + du*d_zistepu | t/z | s/z
flds fp_64k // fp_64k | dv*d_zistepv + du*d_zistepu | t/z | s/z
fxch %st(1) // dv*d_zistepv + du*d_zistepu | fp_64k | t/z | s/z
fadds C(d_ziorigin) // zi = d_ziorigin + dv*d_zistepv +
// du*d_zistepu; stays in %st(0) at end
// 1/z | fp_64k | t/z | s/z
//
// calculate and clamp s & t
//
fdivr %st(0),%st(1) // 1/z | z*64k | t/z | s/z
//
// point %edi to the first pixel in the span
//
movl C(d_viewbuffer),%ecx
movl espan_t_v(%ebx),%eax
movl %ebx,pspantemp // preserve spans pointer
movl C(tadjust),%edx
movl C(sadjust),%esi
movl C(d_scantable)(,%eax,4),%edi // v * screenwidth
addl %ecx,%edi
movl espan_t_u(%ebx),%ecx
addl %ecx,%edi // pdest = &pdestspan[scans->u];
movl espan_t_count(%ebx),%ecx
//
// now start the FDIV for the end of the span
//
cmpl $16,%ecx
ja LSetupNotLast1
decl %ecx
jz LCleanup1 // if only one pixel, no need to start an FDIV
movl %ecx,spancountminus1
// finish up the s and t calcs
fxch %st(1) // z*64k | 1/z | t/z | s/z
fld %st(0) // z*64k | z*64k | 1/z | t/z | s/z
fmul %st(4),%st(0) // s | z*64k | 1/z | t/z | s/z
fxch %st(1) // z*64k | s | 1/z | t/z | s/z
fmul %st(3),%st(0) // t | s | 1/z | t/z | s/z
fxch %st(1) // s | t | 1/z | t/z | s/z
fistpl s // 1/z | t | t/z | s/z
fistpl t // 1/z | t/z | s/z
fildl spancountminus1
flds C(d_tdivzstepu) // C(d_tdivzstepu) | spancountminus1
flds C(d_zistepu) // C(d_zistepu) | C(d_tdivzstepu) | spancountminus1
fmul %st(2),%st(0) // C(d_zistepu)*scm1 | C(d_tdivzstepu) | scm1
fxch %st(1) // C(d_tdivzstepu) | C(d_zistepu)*scm1 | scm1
fmul %st(2),%st(0) // C(d_tdivzstepu)*scm1 | C(d_zistepu)*scm1 | scm1
fxch %st(2) // scm1 | C(d_zistepu)*scm1 | C(d_tdivzstepu)*scm1
fmuls C(d_sdivzstepu) // C(d_sdivzstepu)*scm1 | C(d_zistepu)*scm1 |
// C(d_tdivzstepu)*scm1
fxch %st(1) // C(d_zistepu)*scm1 | C(d_sdivzstepu)*scm1 |
// C(d_tdivzstepu)*scm1
faddp %st(0),%st(3) // C(d_sdivzstepu)*scm1 | C(d_tdivzstepu)*scm1
fxch %st(1) // C(d_tdivzstepu)*scm1 | C(d_sdivzstepu)*scm1
faddp %st(0),%st(3) // C(d_sdivzstepu)*scm1
faddp %st(0),%st(3)
flds fp_64k
fdiv %st(1),%st(0) // this is what we've gone to all this trouble to
// overlap
jmp LFDIVInFlight1
LCleanup1:
// finish up the s and t calcs
fxch %st(1) // z*64k | 1/z | t/z | s/z
fld %st(0) // z*64k | z*64k | 1/z | t/z | s/z
fmul %st(4),%st(0) // s | z*64k | 1/z | t/z | s/z
fxch %st(1) // z*64k | s | 1/z | t/z | s/z
fmul %st(3),%st(0) // t | s | 1/z | t/z | s/z
fxch %st(1) // s | t | 1/z | t/z | s/z
fistpl s // 1/z | t | t/z | s/z
fistpl t // 1/z | t/z | s/z
jmp LFDIVInFlight1
.align 4
LSetupNotLast1:
// finish up the s and t calcs
fxch %st(1) // z*64k | 1/z | t/z | s/z
fld %st(0) // z*64k | z*64k | 1/z | t/z | s/z
fmul %st(4),%st(0) // s | z*64k | 1/z | t/z | s/z
fxch %st(1) // z*64k | s | 1/z | t/z | s/z
fmul %st(3),%st(0) // t | s | 1/z | t/z | s/z
fxch %st(1) // s | t | 1/z | t/z | s/z
fistpl s // 1/z | t | t/z | s/z
fistpl t // 1/z | t/z | s/z
fadds zi16stepu
fxch %st(2)
fadds sdivz16stepu
fxch %st(2)
flds tdivz16stepu
faddp %st(0),%st(2)
flds fp_64k
fdiv %st(1),%st(0) // z = 1/1/z
// this is what we've gone to all this trouble to
// overlap
LFDIVInFlight1:
addl s,%esi
addl t,%edx
movl C(bbextents),%ebx
movl C(bbextentt),%ebp
cmpl %ebx,%esi
ja LClampHighOrLow0
LClampReentry0:
movl %esi,s
movl pbase,%ebx
shll $16,%esi
cmpl %ebp,%edx
movl %esi,sfracf
ja LClampHighOrLow1
LClampReentry1:
movl %edx,t
movl s,%esi // sfrac = scans->sfrac;
shll $16,%edx
movl t,%eax // tfrac = scans->tfrac;
sarl $16,%esi
movl %edx,tfracf
//
// calculate the texture starting address
//
sarl $16,%eax
movl C(cachewidth),%edx
imull %edx,%eax // (tfrac >> 16) * cachewidth
addl %ebx,%esi
addl %eax,%esi // psource = pbase + (sfrac >> 16) +
// ((tfrac >> 16) * cachewidth);
//
// determine whether last span or not
//
cmpl $16,%ecx
jna LLastSegment
//
// not the last segment; do full 16-wide segment
//
LNotLastSegment:
//
// advance s/z, t/z, and 1/z, and calculate s & t at end of span and steps to
// get there
//
// pick up after the FDIV that was left in flight previously
fld %st(0) // duplicate it
fmul %st(4),%st(0) // s = s/z * z
fxch %st(1)
fmul %st(3),%st(0) // t = t/z * z
fxch %st(1)
fistpl snext
fistpl tnext
movl snext,%eax
movl tnext,%edx
movb (%esi),%bl // get first source texel
subl $16,%ecx // count off this segments' pixels
movl C(sadjust),%ebp
movl %ecx,counttemp // remember count of remaining pixels
movl C(tadjust),%ecx
movb %bl,(%edi) // store first dest pixel
addl %eax,%ebp
addl %edx,%ecx
movl C(bbextents),%eax
movl C(bbextentt),%edx
cmpl $4096,%ebp
jl LClampLow2
cmpl %eax,%ebp
ja LClampHigh2
LClampReentry2:
cmpl $4096,%ecx
jl LClampLow3
cmpl %edx,%ecx
ja LClampHigh3
LClampReentry3:
movl %ebp,snext
movl %ecx,tnext
subl s,%ebp
subl t,%ecx
//
// set up advancetable
//
movl %ecx,%eax
movl %ebp,%edx
sarl $20,%eax // tstep >>= 16;
jz LZero
sarl $20,%edx // sstep >>= 16;
movl C(cachewidth),%ebx
imull %ebx,%eax
jmp LSetUp1
LZero:
sarl $20,%edx // sstep >>= 16;
movl C(cachewidth),%ebx
LSetUp1:
addl %edx,%eax // add in sstep
// (tstep >> 16) * cachewidth + (sstep >> 16);
movl tfracf,%edx
movl %eax,advancetable+4 // advance base in t
addl %ebx,%eax // ((tstep >> 16) + 1) * cachewidth +
// (sstep >> 16);
shll $12,%ebp // left-justify sstep fractional part
movl sfracf,%ebx
shll $12,%ecx // left-justify tstep fractional part
movl %eax,advancetable // advance extra in t
movl %ecx,tstep
addl %ecx,%edx // advance tfrac fractional part by tstep frac
sbbl %ecx,%ecx // turn tstep carry into -1 (0 if none)
addl %ebp,%ebx // advance sfrac fractional part by sstep frac
adcl advancetable+4(,%ecx,4),%esi // point to next source texel
addl tstep,%edx
sbbl %ecx,%ecx
movb (%esi),%al
addl %ebp,%ebx
movb %al,1(%edi)
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,2(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,3(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,4(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,5(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,6(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,7(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
//
// start FDIV for end of next segment in flight, so it can overlap
//
movl counttemp,%ecx
cmpl $16,%ecx // more than one segment after this?
ja LSetupNotLast2 // yes
decl %ecx
jz LFDIVInFlight2 // if only one pixel, no need to start an FDIV
movl %ecx,spancountminus1
fildl spancountminus1
flds C(d_zistepu) // C(d_zistepu) | spancountminus1
fmul %st(1),%st(0) // C(d_zistepu)*scm1 | scm1
flds C(d_tdivzstepu) // C(d_tdivzstepu) | C(d_zistepu)*scm1 | scm1
fmul %st(2),%st(0) // C(d_tdivzstepu)*scm1 | C(d_zistepu)*scm1 | scm1
fxch %st(1) // C(d_zistepu)*scm1 | C(d_tdivzstepu)*scm1 | scm1
faddp %st(0),%st(3) // C(d_tdivzstepu)*scm1 | scm1
fxch %st(1) // scm1 | C(d_tdivzstepu)*scm1
fmuls C(d_sdivzstepu) // C(d_sdivzstepu)*scm1 | C(d_tdivzstepu)*scm1
fxch %st(1) // C(d_tdivzstepu)*scm1 | C(d_sdivzstepu)*scm1
faddp %st(0),%st(3) // C(d_sdivzstepu)*scm1
flds fp_64k // 64k | C(d_sdivzstepu)*scm1
fxch %st(1) // C(d_sdivzstepu)*scm1 | 64k
faddp %st(0),%st(4) // 64k
fdiv %st(1),%st(0) // this is what we've gone to all this trouble to
// overlap
jmp LFDIVInFlight2
.align 4
LSetupNotLast2:
fadds zi16stepu
fxch %st(2)
fadds sdivz16stepu
fxch %st(2)
flds tdivz16stepu
faddp %st(0),%st(2)
flds fp_64k
fdiv %st(1),%st(0) // z = 1/1/z
// this is what we've gone to all this trouble to
// overlap
LFDIVInFlight2:
movl %ecx,counttemp
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,8(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,9(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,10(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,11(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,12(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,13(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,14(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl $16,%edi
movl %edx,tfracf
movl snext,%edx
movl %ebx,sfracf
movl tnext,%ebx
movl %edx,s
movl %ebx,t
movl counttemp,%ecx // retrieve count
//
// determine whether last span or not
//
cmpl $16,%ecx // are there multiple segments remaining?
movb %al,-1(%edi)
ja LNotLastSegment // yes
//
// last segment of scan
//
LLastSegment:
//
// advance s/z, t/z, and 1/z, and calculate s & t at end of span and steps to
// get there. The number of pixels left is variable, and we want to land on the
// last pixel, not step one past it, so we can't run into arithmetic problems
//
testl %ecx,%ecx
jz LNoSteps // just draw the last pixel and we're done
// pick up after the FDIV that was left in flight previously
fld %st(0) // duplicate it
fmul %st(4),%st(0) // s = s/z * z
fxch %st(1)
fmul %st(3),%st(0) // t = t/z * z
fxch %st(1)
fistpl snext
fistpl tnext
movb (%esi),%al // load first texel in segment
movl C(tadjust),%ebx
movb %al,(%edi) // store first pixel in segment
movl C(sadjust),%eax
addl snext,%eax
addl tnext,%ebx
movl C(bbextents),%ebp
movl C(bbextentt),%edx
cmpl $4096,%eax
jl LClampLow4
cmpl %ebp,%eax
ja LClampHigh4
LClampReentry4:
movl %eax,snext
cmpl $4096,%ebx
jl LClampLow5
cmpl %edx,%ebx
ja LClampHigh5
LClampReentry5:
cmpl $1,%ecx // don't bother
je LOnlyOneStep // if two pixels in segment, there's only one step,
// of the segment length
subl s,%eax
subl t,%ebx
addl %eax,%eax // convert to 15.17 format so multiply by 1.31
addl %ebx,%ebx // reciprocal yields 16.48
imull reciprocal_table_16-8(,%ecx,4) // sstep = (snext - s) /
// (spancount-1)
movl %edx,%ebp
movl %ebx,%eax
imull reciprocal_table_16-8(,%ecx,4) // tstep = (tnext - t) /
// (spancount-1)
LSetEntryvec:
//
// set up advancetable
//
movl entryvec_table_16(,%ecx,4),%ebx
movl %edx,%eax
movl %ebx,jumptemp // entry point into code for RET later
movl %ebp,%ecx
sarl $16,%edx // tstep >>= 16;
movl C(cachewidth),%ebx
sarl $16,%ecx // sstep >>= 16;
imull %ebx,%edx
addl %ecx,%edx // add in sstep
// (tstep >> 16) * cachewidth + (sstep >> 16);
movl tfracf,%ecx
movl %edx,advancetable+4 // advance base in t
addl %ebx,%edx // ((tstep >> 16) + 1) * cachewidth +
// (sstep >> 16);
shll $16,%ebp // left-justify sstep fractional part
movl sfracf,%ebx
shll $16,%eax // left-justify tstep fractional part
movl %edx,advancetable // advance extra in t
movl %eax,tstep
movl %ecx,%edx
addl %eax,%edx
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
jmp *jumptemp // jump to the number-of-pixels handler
//----------------------------------------
LNoSteps:
movb (%esi),%al // load first texel in segment
subl $15,%edi // adjust for hardwired offset
jmp LEndSpan
LOnlyOneStep:
subl s,%eax
subl t,%ebx
movl %eax,%ebp
movl %ebx,%edx
jmp LSetEntryvec
//----------------------------------------
.globl Entry2_16, Entry3_16, Entry4_16, Entry5_16
.globl Entry6_16, Entry7_16, Entry8_16, Entry9_16
.globl Entry10_16, Entry11_16, Entry12_16, Entry13_16
.globl Entry14_16, Entry15_16, Entry16_16
Entry2_16:
subl $14,%edi // adjust for hardwired offsets
movb (%esi),%al
jmp LEntry2_16
//----------------------------------------
Entry3_16:
subl $13,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
jmp LEntry3_16
//----------------------------------------
Entry4_16:
subl $12,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry4_16
//----------------------------------------
Entry5_16:
subl $11,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry5_16
//----------------------------------------
Entry6_16:
subl $10,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry6_16
//----------------------------------------
Entry7_16:
subl $9,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry7_16
//----------------------------------------
Entry8_16:
subl $8,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry8_16
//----------------------------------------
Entry9_16:
subl $7,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry9_16
//----------------------------------------
Entry10_16:
subl $6,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry10_16
//----------------------------------------
Entry11_16:
subl $5,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry11_16
//----------------------------------------
Entry12_16:
subl $4,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry12_16
//----------------------------------------
Entry13_16:
subl $3,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry13_16
//----------------------------------------
Entry14_16:
subl $2,%edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry14_16
//----------------------------------------
Entry15_16:
decl %edi // adjust for hardwired offsets
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
jmp LEntry15_16
//----------------------------------------
Entry16_16:
addl %eax,%edx
movb (%esi),%al
sbbl %ecx,%ecx
addl %ebp,%ebx
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
sbbl %ecx,%ecx
movb %al,1(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry15_16:
sbbl %ecx,%ecx
movb %al,2(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry14_16:
sbbl %ecx,%ecx
movb %al,3(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry13_16:
sbbl %ecx,%ecx
movb %al,4(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry12_16:
sbbl %ecx,%ecx
movb %al,5(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry11_16:
sbbl %ecx,%ecx
movb %al,6(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry10_16:
sbbl %ecx,%ecx
movb %al,7(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry9_16:
sbbl %ecx,%ecx
movb %al,8(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry8_16:
sbbl %ecx,%ecx
movb %al,9(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry7_16:
sbbl %ecx,%ecx
movb %al,10(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry6_16:
sbbl %ecx,%ecx
movb %al,11(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry5_16:
sbbl %ecx,%ecx
movb %al,12(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
addl tstep,%edx
LEntry4_16:
sbbl %ecx,%ecx
movb %al,13(%edi)
addl %ebp,%ebx
movb (%esi),%al
adcl advancetable+4(,%ecx,4),%esi
LEntry3_16:
movb %al,14(%edi)
movb (%esi),%al
LEntry2_16:
LEndSpan:
//
// clear s/z, t/z, 1/z from FP stack
//
fstp %st(0)
fstp %st(0)
fstp %st(0)
movl pspantemp,%ebx // restore spans pointer
movl espan_t_pnext(%ebx),%ebx // point to next span
testl %ebx,%ebx // any more spans?
movb %al,15(%edi)
jnz LSpanLoop // more spans
popl %ebx // restore register variables
popl %esi
popl %edi
popl %ebp // restore the caller's stack frame
ret
#endif // id386

88
qw_client/d_fill.c
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@ -1,88 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// d_clear: clears a specified rectangle to the specified color
#include "quakedef.h"
/*
================
D_FillRect
================
*/
void D_FillRect (vrect_t *rect, int color)
{
int rx, ry, rwidth, rheight;
unsigned char *dest;
unsigned *ldest;
rx = rect->x;
ry = rect->y;
rwidth = rect->width;
rheight = rect->height;
if (rx < 0)
{
rwidth += rx;
rx = 0;
}
if (ry < 0)
{
rheight += ry;
ry = 0;
}
if (rx+rwidth > vid.width)
rwidth = vid.width - rx;
if (ry+rheight > vid.height)
rheight = vid.height - rx;
if (rwidth < 1 || rheight < 1)
return;
dest = ((byte *)vid.buffer + ry*vid.rowbytes + rx);
if (((rwidth & 0x03) == 0) && (((long)dest & 0x03) == 0))
{
// faster aligned dword clear
ldest = (unsigned *)dest;
color += color << 16;
rwidth >>= 2;
color += color << 8;
for (ry=0 ; ry<rheight ; ry++)
{
for (rx=0 ; rx<rwidth ; rx++)
ldest[rx] = color;
ldest = (unsigned *)((byte*)ldest + vid.rowbytes);
}
}
else
{
// slower byte-by-byte clear for unaligned cases
for (ry=0 ; ry<rheight ; ry++)
{
for (rx=0 ; rx<rwidth ; rx++)
dest[rx] = color;
dest += vid.rowbytes;
}
}
}

174
qw_client/d_init.c
View file

@ -1,174 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// d_init.c: rasterization driver initialization
#include "quakedef.h"
#include "d_local.h"
#define NUM_MIPS 4
cvar_t d_subdiv16 = {"d_subdiv16", "1"};
cvar_t d_mipcap = {"d_mipcap", "0"};
cvar_t d_mipscale = {"d_mipscale", "1"};
surfcache_t *d_initial_rover;
qboolean d_roverwrapped;
int d_minmip;
float d_scalemip[NUM_MIPS-1];
static float basemip[NUM_MIPS-1] = {1.0, 0.5*0.8, 0.25*0.8};
extern int d_aflatcolor;
void (*d_drawspans) (espan_t *pspan);
/*
===============
D_Init
===============
*/
void D_Init (void)
{
r_skydirect = 1;
Cvar_RegisterVariable (&d_subdiv16);
Cvar_RegisterVariable (&d_mipcap);
Cvar_RegisterVariable (&d_mipscale);
r_drawpolys = false;
r_worldpolysbacktofront = false;
r_recursiveaffinetriangles = true;
r_pixbytes = 1;
r_aliasuvscale = 1.0;
}
/*
===============
D_CopyRects
===============
*/
void D_CopyRects (vrect_t *prects, int transparent)
{
// this function is only required if the CPU doesn't have direct access to the
// back buffer, and there's some driver interface function that the driver
// doesn't support and requires Quake to do in software (such as drawing the
// console); Quake will then draw into wherever the driver points vid.buffer
// and will call this function before swapping buffers
UNUSED(prects);
UNUSED(transparent);
}
/*
===============
D_EnableBackBufferAccess
===============
*/
void D_EnableBackBufferAccess (void)
{
VID_LockBuffer ();
}
/*
===============
D_TurnZOn
===============
*/
void D_TurnZOn (void)
{
// not needed for software version
}
/*
===============
D_DisableBackBufferAccess
===============
*/
void D_DisableBackBufferAccess (void)
{
VID_UnlockBuffer ();
}
/*
===============
D_SetupFrame
===============
*/
void D_SetupFrame (void)
{
int i;
if (r_dowarp)
d_viewbuffer = r_warpbuffer;
else
d_viewbuffer = (void *)(byte *)vid.buffer;
if (r_dowarp)
screenwidth = WARP_WIDTH;
else
screenwidth = vid.rowbytes;
d_roverwrapped = false;
d_initial_rover = sc_rover;
d_minmip = d_mipcap.value;
if (d_minmip > 3)
d_minmip = 3;
else if (d_minmip < 0)
d_minmip = 0;
for (i=0 ; i<(NUM_MIPS-1) ; i++)
d_scalemip[i] = basemip[i] * d_mipscale.value;
#if id386
if (d_subdiv16.value)
d_drawspans = D_DrawSpans16;
else
d_drawspans = D_DrawSpans8;
#else
d_drawspans = D_DrawSpans8;
#endif
d_aflatcolor = 0;
}
/*
===============
D_UpdateRects
===============
*/
void D_UpdateRects (vrect_t *prect)
{
// the software driver draws these directly to the vid buffer
UNUSED(prect);
}

107
qw_client/d_modech.c
View file

@ -1,107 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// d_modech.c: called when mode has just changed
#include "quakedef.h"
#include "d_local.h"
int d_vrectx, d_vrecty, d_vrectright_particle, d_vrectbottom_particle;
int d_y_aspect_shift, d_pix_min, d_pix_max, d_pix_shift;
int d_scantable[MAXHEIGHT];
short *zspantable[MAXHEIGHT];
/*
================
D_Patch
================
*/
void D_Patch (void)
{
#if id386
static qboolean protectset8 = false;
if (!protectset8)
{
Sys_MakeCodeWriteable ((int)D_PolysetAff8Start,
(int)D_PolysetAff8End - (int)D_PolysetAff8Start);
protectset8 = true;
}
#endif // id386
}
/*
================
D_ViewChanged
================
*/
void D_ViewChanged (void)
{
int rowbytes;
if (r_dowarp)
rowbytes = WARP_WIDTH;
else
rowbytes = vid.rowbytes;
scale_for_mip = xscale;
if (yscale > xscale)
scale_for_mip = yscale;
d_zrowbytes = vid.width * 2;
d_zwidth = vid.width;
d_pix_min = r_refdef.vrect.width / 320;
if (d_pix_min < 1)
d_pix_min = 1;
d_pix_max = (int)((float)r_refdef.vrect.width / (320.0 / 4.0) + 0.5);
d_pix_shift = 8 - (int)((float)r_refdef.vrect.width / 320.0 + 0.5);
if (d_pix_max < 1)
d_pix_max = 1;
if (pixelAspect > 1.4)
d_y_aspect_shift = 1;
else
d_y_aspect_shift = 0;
d_vrectx = r_refdef.vrect.x;
d_vrecty = r_refdef.vrect.y;
d_vrectright_particle = r_refdef.vrectright - d_pix_max;
d_vrectbottom_particle =
r_refdef.vrectbottom - (d_pix_max << d_y_aspect_shift);
{
int i;
for (i=0 ; i<vid.height; i++)
{
d_scantable[i] = i*rowbytes;
zspantable[i] = d_pzbuffer + i*d_zwidth;
}
}
D_Patch ();
}

207
qw_client/d_part.c
View file

@ -1,207 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// d_part.c: software driver module for drawing particles
#include "quakedef.h"
#include "d_local.h"
/*
==============
D_EndParticles
==============
*/
void D_EndParticles (void)
{
// not used by software driver
}
/*
==============
D_StartParticles
==============
*/
void D_StartParticles (void)
{
// not used by software driver
}
#if !id386
/*
==============
D_DrawParticle
==============
*/
void D_DrawParticle (particle_t *pparticle)
{
vec3_t local, transformed;
float zi;
byte *pdest;
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 xcenter and ycenter
zi = 1.0 / transformed[2];
u = (int)(xcenter + zi * transformed[0] + 0.5);
v = (int)(ycenter - zi * transformed[1] + 0.5);
if ((v > d_vrectbottom_particle) ||
(u > d_vrectright_particle) ||
(v < d_vrecty) ||
(u < d_vrectx))
{
return;
}
pz = d_pzbuffer + (d_zwidth * v) + u;
pdest = d_viewbuffer + d_scantable[v] + u;
izi = (int)(zi * 0x8000);
pix = izi >> d_pix_shift;
if (pix < d_pix_min)
pix = d_pix_min;
else if (pix > d_pix_max)
pix = d_pix_max;
switch (pix)
{
case 1:
count = 1 << d_y_aspect_shift;
for ( ; count ; count--, pz += d_zwidth, pdest += screenwidth)
{
if (pz[0] <= izi)
{
pz[0] = izi;
pdest[0] = pparticle->color;
}
}
break;
case 2:
count = 2 << d_y_aspect_shift;
for ( ; count ; count--, pz += d_zwidth, pdest += screenwidth)
{
if (pz[0] <= izi)
{
pz[0] = izi;
pdest[0] = pparticle->color;
}
if (pz[1] <= izi)
{
pz[1] = izi;
pdest[1] = pparticle->color;
}
}
break;
case 3:
count = 3 << d_y_aspect_shift;
for ( ; count ; count--, pz += d_zwidth, pdest += screenwidth)
{
if (pz[0] <= izi)
{
pz[0] = izi;
pdest[0] = pparticle->color;
}
if (pz[1] <= izi)
{
pz[1] = izi;
pdest[1] = pparticle->color;
}
if (pz[2] <= izi)
{
pz[2] = izi;
pdest[2] = pparticle->color;
}
}
break;
case 4:
count = 4 << d_y_aspect_shift;
for ( ; count ; count--, pz += d_zwidth, pdest += screenwidth)
{
if (pz[0] <= izi)
{
pz[0] = izi;
pdest[0] = pparticle->color;
}
if (pz[1] <= izi)
{
pz[1] = izi;
pdest[1] = pparticle->color;
}
if (pz[2] <= izi)
{
pz[2] = izi;
pdest[2] = pparticle->color;
}
if (pz[3] <= izi)
{
pz[3] = izi;
pdest[3] = pparticle->color;
}
}
break;
default:
count = pix << d_y_aspect_shift;
for ( ; count ; count--, pz += d_zwidth, pdest += screenwidth)
{
for (i=0 ; i<pix ; i++)
{
if (pz[i] <= izi)
{
pz[i] = izi;
pdest[i] = pparticle->color;
}
}
}
break;
}
}
#endif // !id386

477
qw_client/d_parta.s
View file

@ -1,477 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//
// d_parta.s
// x86 assembly-language 8-bpp particle-drawing code.
//
#include "asm_i386.h"
#include "quakeasm.h"
#include "d_ifacea.h"
#include "asm_draw.h"
#if id386
//----------------------------------------------------------------------
// 8-bpp particle drawing code.
//----------------------------------------------------------------------
//FIXME: comments, full optimization
//----------------------------------------------------------------------
// 8-bpp particle queueing code.
//----------------------------------------------------------------------
.text
#define P 12+4
.align 4
.globl C(D_DrawParticle)
C(D_DrawParticle):
pushl %ebp // preserve caller's stack frame
pushl %edi // preserve register variables
pushl %ebx
movl P(%esp),%edi
// FIXME: better FP overlap in general here
// transform point
// VectorSubtract (p->org, r_origin, local);
flds C(r_origin)
fsubrs pt_org(%edi)
flds pt_org+4(%edi)
fsubs C(r_origin)+4
flds pt_org+8(%edi)
fsubs C(r_origin)+8
fxch %st(2) // local[0] | local[1] | local[2]
// transformed[2] = DotProduct(local, r_ppn);
flds C(r_ppn) // r_ppn[0] | local[0] | local[1] | local[2]
fmul %st(1),%st(0) // dot0 | local[0] | local[1] | local[2]
flds C(r_ppn)+4 // r_ppn[1] | dot0 | local[0] | local[1] | local[2]
fmul %st(3),%st(0) // dot1 | dot0 | local[0] | local[1] | local[2]
flds C(r_ppn)+8 // r_ppn[2] | dot1 | dot0 | local[0] |
// local[1] | local[2]
fmul %st(5),%st(0) // dot2 | dot1 | dot0 | local[0] | local[1] | local[2]
fxch %st(2) // dot0 | dot1 | dot2 | local[0] | local[1] | local[2]
faddp %st(0),%st(1) // dot0 + dot1 | dot2 | local[0] | local[1] |
// local[2]
faddp %st(0),%st(1) // z | local[0] | local[1] | local[2]
fld %st(0) // z | z | local[0] | local[1] |
// local[2]
fdivrs float_1 // 1/z | z | local[0] | local[1] | local[2]
fxch %st(1) // z | 1/z | local[0] | local[1] | local[2]
// if (transformed[2] < PARTICLE_Z_CLIP)
// return;
fcomps float_particle_z_clip // 1/z | local[0] | local[1] | local[2]
fxch %st(3) // local[2] | local[0] | local[1] | 1/z
flds C(r_pup) // r_pup[0] | local[2] | local[0] | local[1] | 1/z
fmul %st(2),%st(0) // dot0 | local[2] | local[0] | local[1] | 1/z
flds C(r_pup)+4 // r_pup[1] | dot0 | local[2] | local[0] |
// local[1] | 1/z
fnstsw %ax
testb $1,%ah
jnz LPop6AndDone
// transformed[1] = DotProduct(local, r_pup);
fmul %st(4),%st(0) // dot1 | dot0 | local[2] | local[0] | local[1] | 1/z
flds C(r_pup)+8 // r_pup[2] | dot1 | dot0 | local[2] |
// local[0] | local[1] | 1/z
fmul %st(3),%st(0) // dot2 | dot1 | dot0 | local[2] | local[0] |
// local[1] | 1/z
fxch %st(2) // dot0 | dot1 | dot2 | local[2] | local[0] |
// local[1] | 1/z
faddp %st(0),%st(1) // dot0 + dot1 | dot2 | local[2] | local[0] |
// local[1] | 1/z
faddp %st(0),%st(1) // y | local[2] | local[0] | local[1] | 1/z
fxch %st(3) // local[1] | local[2] | local[0] | y | 1/z
// transformed[0] = DotProduct(local, r_pright);
fmuls C(r_pright)+4 // dot1 | local[2] | local[0] | y | 1/z
fxch %st(2) // local[0] | local[2] | dot1 | y | 1/z
fmuls C(r_pright) // dot0 | local[2] | dot1 | y | 1/z
fxch %st(1) // local[2] | dot0 | dot1 | y | 1/z
fmuls C(r_pright)+8 // dot2 | dot0 | dot1 | y | 1/z
fxch %st(2) // dot1 | dot0 | dot2 | y | 1/z
faddp %st(0),%st(1) // dot1 + dot0 | dot2 | y | 1/z
faddp %st(0),%st(1) // x | y | 1/z
fxch %st(1) // y | x | 1/z
// project the point
fmul %st(2),%st(0) // y/z | x | 1/z
fxch %st(1) // x | y/z | 1/z
fmul %st(2),%st(0) // x/z | y/z | 1/z
fxch %st(1) // y/z | x/z | 1/z
fsubrs C(ycenter) // v | x/z | 1/z
fxch %st(1) // x/z | v | 1/z
fadds C(xcenter) // u | v | 1/z
// FIXME: preadjust xcenter and ycenter
fxch %st(1) // v | u | 1/z
fadds float_point5 // v | u | 1/z
fxch %st(1) // u | v | 1/z
fadds float_point5 // u | v | 1/z
fxch %st(2) // 1/z | v | u
fmuls DP_32768 // 1/z * 0x8000 | v | u
fxch %st(2) // u | v | 1/z * 0x8000
// FIXME: use Terje's fp->int trick here?
// FIXME: check we're getting proper rounding here
fistpl DP_u // v | 1/z * 0x8000
fistpl DP_v // 1/z * 0x8000
movl DP_u,%eax
movl DP_v,%edx
// if ((v > d_vrectbottom_particle) ||
// (u > d_vrectright_particle) ||
// (v < d_vrecty) ||
// (u < d_vrectx))
// {
// continue;
// }
movl C(d_vrectbottom_particle),%ebx
movl C(d_vrectright_particle),%ecx
cmpl %ebx,%edx
jg LPop1AndDone
cmpl %ecx,%eax
jg LPop1AndDone
movl C(d_vrecty),%ebx
movl C(d_vrectx),%ecx
cmpl %ebx,%edx
jl LPop1AndDone
cmpl %ecx,%eax
jl LPop1AndDone
flds pt_color(%edi) // color | 1/z * 0x8000
// FIXME: use Terje's fast fp->int trick?
fistpl DP_Color // 1/z * 0x8000
movl C(d_viewbuffer),%ebx
addl %eax,%ebx
movl C(d_scantable)(,%edx,4),%edi // point to the pixel
imull C(d_zrowbytes),%edx // point to the z pixel
leal (%edx,%eax,2),%edx
movl C(d_pzbuffer),%eax
fistpl izi
addl %ebx,%edi
addl %eax,%edx
// pix = izi >> d_pix_shift;
movl izi,%eax
movl C(d_pix_shift),%ecx
shrl %cl,%eax
movl izi,%ebp
// if (pix < d_pix_min)
// pix = d_pix_min;
// else if (pix > d_pix_max)
// pix = d_pix_max;
movl C(d_pix_min),%ebx
movl C(d_pix_max),%ecx
cmpl %ebx,%eax
jnl LTestPixMax
movl %ebx,%eax
jmp LTestDone
LTestPixMax:
cmpl %ecx,%eax
jng LTestDone
movl %ecx,%eax
LTestDone:
movb DP_Color,%ch
movl C(d_y_aspect_shift),%ebx
testl %ebx,%ebx
jnz LDefault
cmpl $4,%eax
ja LDefault
jmp *DP_EntryTable-4(,%eax,4)
// 1x1
.globl DP_1x1
DP_1x1:
cmpw %bp,(%edx) // just one pixel to do
jg LDone
movw %bp,(%edx)
movb %ch,(%edi)
jmp LDone
// 2x2
.globl DP_2x2
DP_2x2:
pushl %esi
movl C(screenwidth),%ebx
movl C(d_zrowbytes),%esi
cmpw %bp,(%edx)
jg L2x2_1
movw %bp,(%edx)
movb %ch,(%edi)
L2x2_1:
cmpw %bp,2(%edx)
jg L2x2_2
movw %bp,2(%edx)
movb %ch,1(%edi)
L2x2_2:
cmpw %bp,(%edx,%esi,1)
jg L2x2_3
movw %bp,(%edx,%esi,1)
movb %ch,(%edi,%ebx,1)
L2x2_3:
cmpw %bp,2(%edx,%esi,1)
jg L2x2_4
movw %bp,2(%edx,%esi,1)
movb %ch,1(%edi,%ebx,1)
L2x2_4:
popl %esi
jmp LDone
// 3x3
.globl DP_3x3
DP_3x3:
pushl %esi
movl C(screenwidth),%ebx
movl C(d_zrowbytes),%esi
cmpw %bp,(%edx)
jg L3x3_1
movw %bp,(%edx)
movb %ch,(%edi)
L3x3_1:
cmpw %bp,2(%edx)
jg L3x3_2
movw %bp,2(%edx)
movb %ch,1(%edi)
L3x3_2:
cmpw %bp,4(%edx)
jg L3x3_3
movw %bp,4(%edx)
movb %ch,2(%edi)
L3x3_3:
cmpw %bp,(%edx,%esi,1)
jg L3x3_4
movw %bp,(%edx,%esi,1)
movb %ch,(%edi,%ebx,1)
L3x3_4:
cmpw %bp,2(%edx,%esi,1)
jg L3x3_5
movw %bp,2(%edx,%esi,1)
movb %ch,1(%edi,%ebx,1)
L3x3_5:
cmpw %bp,4(%edx,%esi,1)
jg L3x3_6
movw %bp,4(%edx,%esi,1)
movb %ch,2(%edi,%ebx,1)
L3x3_6:
cmpw %bp,(%edx,%esi,2)
jg L3x3_7
movw %bp,(%edx,%esi,2)
movb %ch,(%edi,%ebx,2)
L3x3_7:
cmpw %bp,2(%edx,%esi,2)
jg L3x3_8
movw %bp,2(%edx,%esi,2)
movb %ch,1(%edi,%ebx,2)
L3x3_8:
cmpw %bp,4(%edx,%esi,2)
jg L3x3_9
movw %bp,4(%edx,%esi,2)
movb %ch,2(%edi,%ebx,2)
L3x3_9:
popl %esi
jmp LDone
// 4x4
.globl DP_4x4
DP_4x4:
pushl %esi
movl C(screenwidth),%ebx
movl C(d_zrowbytes),%esi
cmpw %bp,(%edx)
jg L4x4_1
movw %bp,(%edx)
movb %ch,(%edi)
L4x4_1:
cmpw %bp,2(%edx)
jg L4x4_2
movw %bp,2(%edx)
movb %ch,1(%edi)
L4x4_2:
cmpw %bp,4(%edx)
jg L4x4_3
movw %bp,4(%edx)
movb %ch,2(%edi)
L4x4_3:
cmpw %bp,6(%edx)
jg L4x4_4
movw %bp,6(%edx)
movb %ch,3(%edi)
L4x4_4:
cmpw %bp,(%edx,%esi,1)
jg L4x4_5
movw %bp,(%edx,%esi,1)
movb %ch,(%edi,%ebx,1)
L4x4_5:
cmpw %bp,2(%edx,%esi,1)
jg L4x4_6
movw %bp,2(%edx,%esi,1)
movb %ch,1(%edi,%ebx,1)
L4x4_6:
cmpw %bp,4(%edx,%esi,1)
jg L4x4_7
movw %bp,4(%edx,%esi,1)
movb %ch,2(%edi,%ebx,1)
L4x4_7:
cmpw %bp,6(%edx,%esi,1)
jg L4x4_8
movw %bp,6(%edx,%esi,1)
movb %ch,3(%edi,%ebx,1)
L4x4_8:
leal (%edx,%esi,2),%edx
leal (%edi,%ebx,2),%edi
cmpw %bp,(%edx)
jg L4x4_9
movw %bp,(%edx)
movb %ch,(%edi)
L4x4_9:
cmpw %bp,2(%edx)
jg L4x4_10
movw %bp,2(%edx)
movb %ch,1(%edi)
L4x4_10:
cmpw %bp,4(%edx)
jg L4x4_11
movw %bp,4(%edx)
movb %ch,2(%edi)
L4x4_11:
cmpw %bp,6(%edx)
jg L4x4_12
movw %bp,6(%edx)
movb %ch,3(%edi)
L4x4_12:
cmpw %bp,(%edx,%esi,1)
jg L4x4_13
movw %bp,(%edx,%esi,1)
movb %ch,(%edi,%ebx,1)
L4x4_13:
cmpw %bp,2(%edx,%esi,1)
jg L4x4_14
movw %bp,2(%edx,%esi,1)
movb %ch,1(%edi,%ebx,1)
L4x4_14:
cmpw %bp,4(%edx,%esi,1)
jg L4x4_15
movw %bp,4(%edx,%esi,1)
movb %ch,2(%edi,%ebx,1)
L4x4_15:
cmpw %bp,6(%edx,%esi,1)
jg L4x4_16
movw %bp,6(%edx,%esi,1)
movb %ch,3(%edi,%ebx,1)
L4x4_16:
popl %esi
jmp LDone
// default case, handling any size particle
LDefault:
// count = pix << d_y_aspect_shift;
movl %eax,%ebx
movl %eax,DP_Pix
movb C(d_y_aspect_shift),%cl
shll %cl,%ebx
// for ( ; count ; count--, pz += d_zwidth, pdest += screenwidth)
// {
// for (i=0 ; i<pix ; i++)
// {
// if (pz[i] <= izi)
// {
// pz[i] = izi;
// pdest[i] = color;
// }
// }
// }
LGenRowLoop:
movl DP_Pix,%eax
LGenColLoop:
cmpw %bp,-2(%edx,%eax,2)
jg LGSkip
movw %bp,-2(%edx,%eax,2)
movb %ch,-1(%edi,%eax,1)
LGSkip:
decl %eax // --pix
jnz LGenColLoop
addl C(d_zrowbytes),%edx
addl C(screenwidth),%edi
decl %ebx // --count
jnz LGenRowLoop
LDone:
popl %ebx // restore register variables
popl %edi
popl %ebp // restore the caller's stack frame
ret
LPop6AndDone:
fstp %st(0)
fstp %st(0)
fstp %st(0)
fstp %st(0)
fstp %st(0)
LPop1AndDone:
fstp %st(0)
jmp LDone
#endif // id386

1744
qw_client/d_polysa.s
View file

File diff suppressed because it is too large Load diff

89
qw_client/d_scana.s
View file

@ -1,89 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//
// d_scana.s
// x86 assembly-language turbulent texture mapping code
//
#include "asm_i386.h"
#include "quakeasm.h"
#include "asm_draw.h"
#include "d_ifacea.h"
#if id386
.data
.text
//----------------------------------------------------------------------
// turbulent texture mapping code
//----------------------------------------------------------------------
.align 4
.globl C(D_DrawTurbulent8Span)
C(D_DrawTurbulent8Span):
pushl %ebp // preserve caller's stack frame pointer
pushl %esi // preserve register variables
pushl %edi
pushl %ebx
movl C(r_turb_s),%esi
movl C(r_turb_t),%ecx
movl C(r_turb_pdest),%edi
movl C(r_turb_spancount),%ebx
Llp:
movl %ecx,%eax
movl %esi,%edx
sarl $16,%eax
movl C(r_turb_turb),%ebp
sarl $16,%edx
andl $(CYCLE-1),%eax
andl $(CYCLE-1),%edx
movl (%ebp,%eax,4),%eax
movl (%ebp,%edx,4),%edx
addl %esi,%eax
sarl $16,%eax
addl %ecx,%edx
sarl $16,%edx
andl $(TURB_TEX_SIZE-1),%eax
andl $(TURB_TEX_SIZE-1),%edx
shll $6,%edx
movl C(r_turb_pbase),%ebp
addl %eax,%edx
incl %edi
addl C(r_turb_sstep),%esi
addl C(r_turb_tstep),%ecx
movb (%ebp,%edx,1),%dl
decl %ebx
movb %dl,-1(%edi)
jnz Llp
movl %edi,C(r_turb_pdest)
popl %ebx // restore register variables
popl %edi
popl %esi
popl %ebp // restore caller's stack frame pointer
ret
#endif // id386

138
qw_client/d_sky.c
View file

@ -1,138 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// d_sky.c
#include "quakedef.h"
#include "r_local.h"
#include "d_local.h"
#define SKY_SPAN_SHIFT 5
#define SKY_SPAN_MAX (1 << SKY_SPAN_SHIFT)
/*
=================
D_Sky_uv_To_st
=================
*/
void D_Sky_uv_To_st (int u, int v, fixed16_t *s, fixed16_t *t)
{
float wu, wv, temp;
vec3_t end;
if (r_refdef.vrect.width >= r_refdef.vrect.height)
temp = (float)r_refdef.vrect.width;
else
temp = (float)r_refdef.vrect.height;
wu = 8192.0 * (float)(u-((int)vid.width>>1)) / temp;
wv = 8192.0 * (float)(((int)vid.height>>1)-v) / temp;
end[0] = 4096*vpn[0] + wu*vright[0] + wv*vup[0];
end[1] = 4096*vpn[1] + wu*vright[1] + wv*vup[1];
end[2] = 4096*vpn[2] + wu*vright[2] + wv*vup[2];
end[2] *= 3;
VectorNormalize (end);
temp = skytime*skyspeed; // TODO: add D_SetupFrame & set this there
*s = (int)((temp + 6*(SKYSIZE/2-1)*end[0]) * 0x10000);
*t = (int)((temp + 6*(SKYSIZE/2-1)*end[1]) * 0x10000);
}
/*
=================
D_DrawSkyScans8
=================
*/
void D_DrawSkyScans8 (espan_t *pspan)
{
int count, spancount, u, v;
unsigned char *pdest;
fixed16_t s, t, snext, tnext, sstep, tstep;
int spancountminus1;
sstep = 0; // keep compiler happy
tstep = 0; // ditto
do
{
pdest = (unsigned char *)((byte *)d_viewbuffer +
(screenwidth * pspan->v) + pspan->u);
count = pspan->count;
// calculate the initial s & t
u = pspan->u;
v = pspan->v;
D_Sky_uv_To_st (u, v, &s, &t);
do
{
if (count >= SKY_SPAN_MAX)
spancount = SKY_SPAN_MAX;
else
spancount = count;
count -= spancount;
if (count)
{
u += spancount;
// calculate s and t at far end of span,
// calculate s and t steps across span by shifting
D_Sky_uv_To_st (u, v, &snext, &tnext);
sstep = (snext - s) >> SKY_SPAN_SHIFT;
tstep = (tnext - t) >> SKY_SPAN_SHIFT;
}
else
{
// calculate s and t at last pixel in span,
// calculate s and t steps across span by division
spancountminus1 = (float)(spancount - 1);
if (spancountminus1 > 0)
{
u += spancountminus1;
D_Sky_uv_To_st (u, v, &snext, &tnext);
sstep = (snext - s) / spancountminus1;
tstep = (tnext - t) / spancountminus1;
}
}
do
{
*pdest++ = r_skysource[((t & R_SKY_TMASK) >> 8) +
((s & R_SKY_SMASK) >> 16)];
s += sstep;
t += tstep;
} while (--spancount > 0);
s = snext;
t = tnext;
} while (count > 0);
} while ((pspan = pspan->pnext) != NULL);
}

900
qw_client/d_spr8.s
View file

@ -1,900 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//
// d_spr8.s
// x86 assembly-language horizontal 8-bpp transparent span-drawing code.
//
#include "asm_i386.h"
#include "quakeasm.h"
#include "asm_draw.h"
#if id386
//----------------------------------------------------------------------
// 8-bpp horizontal span drawing code for polygons, with transparency.
//----------------------------------------------------------------------
.text
// out-of-line, rarely-needed clamping code
LClampHigh0:
movl C(bbextents),%esi
jmp LClampReentry0
LClampHighOrLow0:
jg LClampHigh0
xorl %esi,%esi
jmp LClampReentry0
LClampHigh1:
movl C(bbextentt),%edx
jmp LClampReentry1
LClampHighOrLow1:
jg LClampHigh1
xorl %edx,%edx
jmp LClampReentry1
LClampLow2:
movl $2048,%ebp
jmp LClampReentry2
LClampHigh2:
movl C(bbextents),%ebp
jmp LClampReentry2
LClampLow3:
movl $2048,%ecx
jmp LClampReentry3
LClampHigh3:
movl C(bbextentt),%ecx
jmp LClampReentry3
LClampLow4:
movl $2048,%eax
jmp LClampReentry4
LClampHigh4:
movl C(bbextents),%eax
jmp LClampReentry4
LClampLow5:
movl $2048,%ebx
jmp LClampReentry5
LClampHigh5:
movl C(bbextentt),%ebx
jmp LClampReentry5
#define pspans 4+16
.align 4
.globl C(D_SpriteDrawSpans)
C(D_SpriteDrawSpans):
pushl %ebp // preserve caller's stack frame
pushl %edi
pushl %esi // preserve register variables
pushl %ebx
//
// set up scaled-by-8 steps, for 8-long segments; also set up cacheblock
// and span list pointers, and 1/z step in 0.32 fixed-point
//
// FIXME: any overlap from rearranging?
flds C(d_sdivzstepu)
fmuls fp_8
movl C(cacheblock),%edx
flds C(d_tdivzstepu)
fmuls fp_8
movl pspans(%esp),%ebx // point to the first span descriptor
flds C(d_zistepu)
fmuls fp_8
movl %edx,pbase // pbase = cacheblock
flds C(d_zistepu)
fmuls fp_64kx64k
fxch %st(3)
fstps sdivz8stepu
fstps zi8stepu
fstps tdivz8stepu
fistpl izistep
movl izistep,%eax
rorl $16,%eax // put upper 16 bits in low word
movl sspan_t_count(%ebx),%ecx
movl %eax,izistep
cmpl $0,%ecx
jle LNextSpan
LSpanLoop:
//
// set up the initial s/z, t/z, and 1/z on the FP stack, and generate the
// initial s and t values
//
// FIXME: pipeline FILD?
fildl sspan_t_v(%ebx)
fildl sspan_t_u(%ebx)
fld %st(1) // dv | du | dv
fmuls C(d_sdivzstepv) // dv*d_sdivzstepv | du | dv
fld %st(1) // du | dv*d_sdivzstepv | du | dv
fmuls C(d_sdivzstepu) // du*d_sdivzstepu | dv*d_sdivzstepv | du | dv
fld %st(2) // du | du*d_sdivzstepu | dv*d_sdivzstepv | du | dv
fmuls C(d_tdivzstepu) // du*d_tdivzstepu | du*d_sdivzstepu |
// dv*d_sdivzstepv | du | dv
fxch %st(1) // du*d_sdivzstepu | du*d_tdivzstepu |
// dv*d_sdivzstepv | du | dv
faddp %st(0),%st(2) // du*d_tdivzstepu |
// du*d_sdivzstepu + dv*d_sdivzstepv | du | dv
fxch %st(1) // du*d_sdivzstepu + dv*d_sdivzstepv |
// du*d_tdivzstepu | du | dv
fld %st(3) // dv | du*d_sdivzstepu + dv*d_sdivzstepv |
// du*d_tdivzstepu | du | dv
fmuls C(d_tdivzstepv) // dv*d_tdivzstepv |
// du*d_sdivzstepu + dv*d_sdivzstepv |
// du*d_tdivzstepu | du | dv
fxch %st(1) // du*d_sdivzstepu + dv*d_sdivzstepv |
// dv*d_tdivzstepv | du*d_tdivzstepu | du | dv
fadds C(d_sdivzorigin) // sdivz = d_sdivzorigin + dv*d_sdivzstepv +
// du*d_sdivzstepu; stays in %st(2) at end
fxch %st(4) // dv | dv*d_tdivzstepv | du*d_tdivzstepu | du |
// s/z
fmuls C(d_zistepv) // dv*d_zistepv | dv*d_tdivzstepv |
// du*d_tdivzstepu | du | s/z
fxch %st(1) // dv*d_tdivzstepv | dv*d_zistepv |
// du*d_tdivzstepu | du | s/z
faddp %st(0),%st(2) // dv*d_zistepv |
// dv*d_tdivzstepv + du*d_tdivzstepu | du | s/z
fxch %st(2) // du | dv*d_tdivzstepv + du*d_tdivzstepu |
// dv*d_zistepv | s/z
fmuls C(d_zistepu) // du*d_zistepu |
// dv*d_tdivzstepv + du*d_tdivzstepu |
// dv*d_zistepv | s/z
fxch %st(1) // dv*d_tdivzstepv + du*d_tdivzstepu |
// du*d_zistepu | dv*d_zistepv | s/z
fadds C(d_tdivzorigin) // tdivz = d_tdivzorigin + dv*d_tdivzstepv +
// du*d_tdivzstepu; stays in %st(1) at end
fxch %st(2) // dv*d_zistepv | du*d_zistepu | t/z | s/z
faddp %st(0),%st(1) // dv*d_zistepv + du*d_zistepu | t/z | s/z
flds fp_64k // fp_64k | dv*d_zistepv + du*d_zistepu | t/z | s/z
fxch %st(1) // dv*d_zistepv + du*d_zistepu | fp_64k | t/z | s/z
fadds C(d_ziorigin) // zi = d_ziorigin + dv*d_zistepv +
// du*d_zistepu; stays in %st(0) at end
// 1/z | fp_64k | t/z | s/z
fld %st(0) // FIXME: get rid of stall on FMUL?
fmuls fp_64kx64k
fxch %st(1)
//
// calculate and clamp s & t
//
fdivr %st(0),%st(2) // 1/z | z*64k | t/z | s/z
fxch %st(1)
fistpl izi // 0.32 fixed-point 1/z
movl izi,%ebp
//
// set pz to point to the first z-buffer pixel in the span
//
rorl $16,%ebp // put upper 16 bits in low word
movl sspan_t_v(%ebx),%eax
movl %ebp,izi
movl sspan_t_u(%ebx),%ebp
imull C(d_zrowbytes)
shll $1,%ebp // a word per pixel
addl C(d_pzbuffer),%eax
addl %ebp,%eax
movl %eax,pz
//
// point %edi to the first pixel in the span
//
movl C(d_viewbuffer),%ebp
movl sspan_t_v(%ebx),%eax
pushl %ebx // preserve spans pointer
movl C(tadjust),%edx
movl C(sadjust),%esi
movl C(d_scantable)(,%eax,4),%edi // v * screenwidth
addl %ebp,%edi
movl sspan_t_u(%ebx),%ebp
addl %ebp,%edi // pdest = &pdestspan[scans->u];
//
// now start the FDIV for the end of the span
//
cmpl $8,%ecx
ja LSetupNotLast1
decl %ecx
jz LCleanup1 // if only one pixel, no need to start an FDIV
movl %ecx,spancountminus1
// finish up the s and t calcs
fxch %st(1) // z*64k | 1/z | t/z | s/z
fld %st(0) // z*64k | z*64k | 1/z | t/z | s/z
fmul %st(4),%st(0) // s | z*64k | 1/z | t/z | s/z
fxch %st(1) // z*64k | s | 1/z | t/z | s/z
fmul %st(3),%st(0) // t | s | 1/z | t/z | s/z
fxch %st(1) // s | t | 1/z | t/z | s/z
fistpl s // 1/z | t | t/z | s/z
fistpl t // 1/z | t/z | s/z
fildl spancountminus1
flds C(d_tdivzstepu) // _d_tdivzstepu | spancountminus1
flds C(d_zistepu) // _d_zistepu | _d_tdivzstepu | spancountminus1
fmul %st(2),%st(0) // _d_zistepu*scm1 | _d_tdivzstepu | scm1
fxch %st(1) // _d_tdivzstepu | _d_zistepu*scm1 | scm1
fmul %st(2),%st(0) // _d_tdivzstepu*scm1 | _d_zistepu*scm1 | scm1
fxch %st(2) // scm1 | _d_zistepu*scm1 | _d_tdivzstepu*scm1
fmuls C(d_sdivzstepu) // _d_sdivzstepu*scm1 | _d_zistepu*scm1 |
// _d_tdivzstepu*scm1
fxch %st(1) // _d_zistepu*scm1 | _d_sdivzstepu*scm1 |
// _d_tdivzstepu*scm1
faddp %st(0),%st(3) // _d_sdivzstepu*scm1 | _d_tdivzstepu*scm1
fxch %st(1) // _d_tdivzstepu*scm1 | _d_sdivzstepu*scm1
faddp %st(0),%st(3) // _d_sdivzstepu*scm1
faddp %st(0),%st(3)
flds fp_64k
fdiv %st(1),%st(0) // this is what we've gone to all this trouble to
// overlap
jmp LFDIVInFlight1
LCleanup1:
// finish up the s and t calcs
fxch %st(1) // z*64k | 1/z | t/z | s/z
fld %st(0) // z*64k | z*64k | 1/z | t/z | s/z
fmul %st(4),%st(0) // s | z*64k | 1/z | t/z | s/z
fxch %st(1) // z*64k | s | 1/z | t/z | s/z
fmul %st(3),%st(0) // t | s | 1/z | t/z | s/z
fxch %st(1) // s | t | 1/z | t/z | s/z
fistpl s // 1/z | t | t/z | s/z
fistpl t // 1/z | t/z | s/z
jmp LFDIVInFlight1
.align 4
LSetupNotLast1:
// finish up the s and t calcs
fxch %st(1) // z*64k | 1/z | t/z | s/z
fld %st(0) // z*64k | z*64k | 1/z | t/z | s/z
fmul %st(4),%st(0) // s | z*64k | 1/z | t/z | s/z
fxch %st(1) // z*64k | s | 1/z | t/z | s/z
fmul %st(3),%st(0) // t | s | 1/z | t/z | s/z
fxch %st(1) // s | t | 1/z | t/z | s/z
fistpl s // 1/z | t | t/z | s/z
fistpl t // 1/z | t/z | s/z
fadds zi8stepu
fxch %st(2)
fadds sdivz8stepu
fxch %st(2)
flds tdivz8stepu
faddp %st(0),%st(2)
flds fp_64k
fdiv %st(1),%st(0) // z = 1/1/z
// this is what we've gone to all this trouble to
// overlap
LFDIVInFlight1:
addl s,%esi
addl t,%edx
movl C(bbextents),%ebx
movl C(bbextentt),%ebp
cmpl %ebx,%esi
ja LClampHighOrLow0
LClampReentry0:
movl %esi,s
movl pbase,%ebx
shll $16,%esi
cmpl %ebp,%edx
movl %esi,sfracf
ja LClampHighOrLow1
LClampReentry1:
movl %edx,t
movl s,%esi // sfrac = scans->sfrac;
shll $16,%edx
movl t,%eax // tfrac = scans->tfrac;
sarl $16,%esi
movl %edx,tfracf
//
// calculate the texture starting address
//
sarl $16,%eax
addl %ebx,%esi
imull C(cachewidth),%eax // (tfrac >> 16) * cachewidth
addl %eax,%esi // psource = pbase + (sfrac >> 16) +
// ((tfrac >> 16) * cachewidth);
//
// determine whether last span or not
//
cmpl $8,%ecx
jna LLastSegment
//
// not the last segment; do full 8-wide segment
//
LNotLastSegment:
//
// advance s/z, t/z, and 1/z, and calculate s & t at end of span and steps to
// get there
//
// pick up after the FDIV that was left in flight previously
fld %st(0) // duplicate it
fmul %st(4),%st(0) // s = s/z * z
fxch %st(1)
fmul %st(3),%st(0) // t = t/z * z
fxch %st(1)
fistpl snext
fistpl tnext
movl snext,%eax
movl tnext,%edx
subl $8,%ecx // count off this segments' pixels
movl C(sadjust),%ebp
pushl %ecx // remember count of remaining pixels
movl C(tadjust),%ecx
addl %eax,%ebp
addl %edx,%ecx
movl C(bbextents),%eax
movl C(bbextentt),%edx
cmpl $2048,%ebp
jl LClampLow2
cmpl %eax,%ebp
ja LClampHigh2
LClampReentry2:
cmpl $2048,%ecx
jl LClampLow3
cmpl %edx,%ecx
ja LClampHigh3
LClampReentry3:
movl %ebp,snext
movl %ecx,tnext
subl s,%ebp
subl t,%ecx
//
// set up advancetable
//
movl %ecx,%eax
movl %ebp,%edx
sarl $19,%edx // sstep >>= 16;
movl C(cachewidth),%ebx
sarl $19,%eax // tstep >>= 16;
jz LIsZero
imull %ebx,%eax // (tstep >> 16) * cachewidth;
LIsZero:
addl %edx,%eax // add in sstep
// (tstep >> 16) * cachewidth + (sstep >> 16);
movl tfracf,%edx
movl %eax,advancetable+4 // advance base in t
addl %ebx,%eax // ((tstep >> 16) + 1) * cachewidth +
// (sstep >> 16);
shll $13,%ebp // left-justify sstep fractional part
movl %ebp,sstep
movl sfracf,%ebx
shll $13,%ecx // left-justify tstep fractional part
movl %eax,advancetable // advance extra in t
movl %ecx,tstep
movl pz,%ecx
movl izi,%ebp
cmpw (%ecx),%bp
jl Lp1
movb (%esi),%al // get first source texel
cmpb $(TRANSPARENT_COLOR),%al
jz Lp1
movw %bp,(%ecx)
movb %al,(%edi) // store first dest pixel
Lp1:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx // advance tfrac fractional part by tstep frac
sbbl %eax,%eax // turn tstep carry into -1 (0 if none)
addl sstep,%ebx // advance sfrac fractional part by sstep frac
adcl advancetable+4(,%eax,4),%esi // point to next source texel
cmpw 2(%ecx),%bp
jl Lp2
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp2
movw %bp,2(%ecx)
movb %al,1(%edi)
Lp2:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
cmpw 4(%ecx),%bp
jl Lp3
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp3
movw %bp,4(%ecx)
movb %al,2(%edi)
Lp3:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
cmpw 6(%ecx),%bp
jl Lp4
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp4
movw %bp,6(%ecx)
movb %al,3(%edi)
Lp4:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
cmpw 8(%ecx),%bp
jl Lp5
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp5
movw %bp,8(%ecx)
movb %al,4(%edi)
Lp5:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
//
// start FDIV for end of next segment in flight, so it can overlap
//
popl %eax
cmpl $8,%eax // more than one segment after this?
ja LSetupNotLast2 // yes
decl %eax
jz LFDIVInFlight2 // if only one pixel, no need to start an FDIV
movl %eax,spancountminus1
fildl spancountminus1
flds C(d_zistepu) // _d_zistepu | spancountminus1
fmul %st(1),%st(0) // _d_zistepu*scm1 | scm1
flds C(d_tdivzstepu) // _d_tdivzstepu | _d_zistepu*scm1 | scm1
fmul %st(2),%st(0) // _d_tdivzstepu*scm1 | _d_zistepu*scm1 | scm1
fxch %st(1) // _d_zistepu*scm1 | _d_tdivzstepu*scm1 | scm1
faddp %st(0),%st(3) // _d_tdivzstepu*scm1 | scm1
fxch %st(1) // scm1 | _d_tdivzstepu*scm1
fmuls C(d_sdivzstepu) // _d_sdivzstepu*scm1 | _d_tdivzstepu*scm1
fxch %st(1) // _d_tdivzstepu*scm1 | _d_sdivzstepu*scm1
faddp %st(0),%st(3) // _d_sdivzstepu*scm1
flds fp_64k // 64k | _d_sdivzstepu*scm1
fxch %st(1) // _d_sdivzstepu*scm1 | 64k
faddp %st(0),%st(4) // 64k
fdiv %st(1),%st(0) // this is what we've gone to all this trouble to
// overlap
jmp LFDIVInFlight2
.align 4
LSetupNotLast2:
fadds zi8stepu
fxch %st(2)
fadds sdivz8stepu
fxch %st(2)
flds tdivz8stepu
faddp %st(0),%st(2)
flds fp_64k
fdiv %st(1),%st(0) // z = 1/1/z
// this is what we've gone to all this trouble to
// overlap
LFDIVInFlight2:
pushl %eax
cmpw 10(%ecx),%bp
jl Lp6
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp6
movw %bp,10(%ecx)
movb %al,5(%edi)
Lp6:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
cmpw 12(%ecx),%bp
jl Lp7
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp7
movw %bp,12(%ecx)
movb %al,6(%edi)
Lp7:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
cmpw 14(%ecx),%bp
jl Lp8
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp8
movw %bp,14(%ecx)
movb %al,7(%edi)
Lp8:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
addl $8,%edi
addl $16,%ecx
movl %edx,tfracf
movl snext,%edx
movl %ebx,sfracf
movl tnext,%ebx
movl %edx,s
movl %ebx,t
movl %ecx,pz
movl %ebp,izi
popl %ecx // retrieve count
//
// determine whether last span or not
//
cmpl $8,%ecx // are there multiple segments remaining?
ja LNotLastSegment // yes
//
// last segment of scan
//
LLastSegment:
//
// advance s/z, t/z, and 1/z, and calculate s & t at end of span and steps to
// get there. The number of pixels left is variable, and we want to land on the
// last pixel, not step one past it, so we can't run into arithmetic problems
//
testl %ecx,%ecx
jz LNoSteps // just draw the last pixel and we're done
// pick up after the FDIV that was left in flight previously
fld %st(0) // duplicate it
fmul %st(4),%st(0) // s = s/z * z
fxch %st(1)
fmul %st(3),%st(0) // t = t/z * z
fxch %st(1)
fistpl snext
fistpl tnext
movl C(tadjust),%ebx
movl C(sadjust),%eax
addl snext,%eax
addl tnext,%ebx
movl C(bbextents),%ebp
movl C(bbextentt),%edx
cmpl $2048,%eax
jl LClampLow4
cmpl %ebp,%eax
ja LClampHigh4
LClampReentry4:
movl %eax,snext
cmpl $2048,%ebx
jl LClampLow5
cmpl %edx,%ebx
ja LClampHigh5
LClampReentry5:
cmpl $1,%ecx // don't bother
je LOnlyOneStep // if two pixels in segment, there's only one step,
// of the segment length
subl s,%eax
subl t,%ebx
addl %eax,%eax // convert to 15.17 format so multiply by 1.31
addl %ebx,%ebx // reciprocal yields 16.48
imull reciprocal_table-8(,%ecx,4) // sstep = (snext - s) / (spancount-1)
movl %edx,%ebp
movl %ebx,%eax
imull reciprocal_table-8(,%ecx,4) // tstep = (tnext - t) / (spancount-1)
LSetEntryvec:
//
// set up advancetable
//
movl spr8entryvec_table(,%ecx,4),%ebx
movl %edx,%eax
pushl %ebx // entry point into code for RET later
movl %ebp,%ecx
sarl $16,%ecx // sstep >>= 16;
movl C(cachewidth),%ebx
sarl $16,%edx // tstep >>= 16;
jz LIsZeroLast
imull %ebx,%edx // (tstep >> 16) * cachewidth;
LIsZeroLast:
addl %ecx,%edx // add in sstep
// (tstep >> 16) * cachewidth + (sstep >> 16);
movl tfracf,%ecx
movl %edx,advancetable+4 // advance base in t
addl %ebx,%edx // ((tstep >> 16) + 1) * cachewidth +
// (sstep >> 16);
shll $16,%ebp // left-justify sstep fractional part
movl sfracf,%ebx
shll $16,%eax // left-justify tstep fractional part
movl %edx,advancetable // advance extra in t
movl %eax,tstep
movl %ebp,sstep
movl %ecx,%edx
movl pz,%ecx
movl izi,%ebp
ret // jump to the number-of-pixels handler
//----------------------------------------
LNoSteps:
movl pz,%ecx
subl $7,%edi // adjust for hardwired offset
subl $14,%ecx
jmp LEndSpan
LOnlyOneStep:
subl s,%eax
subl t,%ebx
movl %eax,%ebp
movl %ebx,%edx
jmp LSetEntryvec
//----------------------------------------
.globl Spr8Entry2_8
Spr8Entry2_8:
subl $6,%edi // adjust for hardwired offsets
subl $12,%ecx
movb (%esi),%al
jmp LLEntry2_8
//----------------------------------------
.globl Spr8Entry3_8
Spr8Entry3_8:
subl $5,%edi // adjust for hardwired offsets
subl $10,%ecx
jmp LLEntry3_8
//----------------------------------------
.globl Spr8Entry4_8
Spr8Entry4_8:
subl $4,%edi // adjust for hardwired offsets
subl $8,%ecx
jmp LLEntry4_8
//----------------------------------------
.globl Spr8Entry5_8
Spr8Entry5_8:
subl $3,%edi // adjust for hardwired offsets
subl $6,%ecx
jmp LLEntry5_8
//----------------------------------------
.globl Spr8Entry6_8
Spr8Entry6_8:
subl $2,%edi // adjust for hardwired offsets
subl $4,%ecx
jmp LLEntry6_8
//----------------------------------------
.globl Spr8Entry7_8
Spr8Entry7_8:
decl %edi // adjust for hardwired offsets
subl $2,%ecx
jmp LLEntry7_8
//----------------------------------------
.globl Spr8Entry8_8
Spr8Entry8_8:
cmpw (%ecx),%bp
jl Lp9
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp9
movw %bp,(%ecx)
movb %al,(%edi)
Lp9:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
LLEntry7_8:
cmpw 2(%ecx),%bp
jl Lp10
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp10
movw %bp,2(%ecx)
movb %al,1(%edi)
Lp10:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
LLEntry6_8:
cmpw 4(%ecx),%bp
jl Lp11
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp11
movw %bp,4(%ecx)
movb %al,2(%edi)
Lp11:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
LLEntry5_8:
cmpw 6(%ecx),%bp
jl Lp12
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp12
movw %bp,6(%ecx)
movb %al,3(%edi)
Lp12:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
LLEntry4_8:
cmpw 8(%ecx),%bp
jl Lp13
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp13
movw %bp,8(%ecx)
movb %al,4(%edi)
Lp13:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
LLEntry3_8:
cmpw 10(%ecx),%bp
jl Lp14
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp14
movw %bp,10(%ecx)
movb %al,5(%edi)
Lp14:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
LLEntry2_8:
cmpw 12(%ecx),%bp
jl Lp15
movb (%esi),%al
cmpb $(TRANSPARENT_COLOR),%al
jz Lp15
movw %bp,12(%ecx)
movb %al,6(%edi)
Lp15:
addl izistep,%ebp
adcl $0,%ebp
addl tstep,%edx
sbbl %eax,%eax
addl sstep,%ebx
adcl advancetable+4(,%eax,4),%esi
LEndSpan:
cmpw 14(%ecx),%bp
jl Lp16
movb (%esi),%al // load first texel in segment
cmpb $(TRANSPARENT_COLOR),%al
jz Lp16
movw %bp,14(%ecx)
movb %al,7(%edi)
Lp16:
//
// clear s/z, t/z, 1/z from FP stack
//
fstp %st(0)
fstp %st(0)
fstp %st(0)
popl %ebx // restore spans pointer
LNextSpan:
addl $(sspan_t_size),%ebx // point to next span
movl sspan_t_count(%ebx),%ecx
cmpl $0,%ecx // any more spans?
jg LSpanLoop // yes
jz LNextSpan // yes, but this one's empty
popl %ebx // restore register variables
popl %esi
popl %edi
popl %ebp // restore the caller's stack frame
ret
#endif // id386

442
qw_client/d_sprite.c
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@ -1,442 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// d_sprite.c: software top-level rasterization driver module for drawing
// sprites
#include "quakedef.h"
#include "d_local.h"
static int sprite_height;
static int minindex, maxindex;
static sspan_t *sprite_spans;
#if !id386
/*
=====================
D_SpriteDrawSpans
=====================
*/
void D_SpriteDrawSpans (sspan_t *pspan)
{
int count, spancount, izistep;
int izi;
byte *pbase, *pdest;
fixed16_t s, t, snext, tnext, sstep, tstep;
float sdivz, tdivz, zi, z, du, dv, spancountminus1;
float sdivz8stepu, tdivz8stepu, zi8stepu;
byte btemp;
short *pz;
sstep = 0; // keep compiler happy
tstep = 0; // ditto
pbase = cacheblock;
sdivz8stepu = d_sdivzstepu * 8;
tdivz8stepu = d_tdivzstepu * 8;
zi8stepu = d_zistepu * 8;
// we count on FP exceptions being turned off to avoid range problems
izistep = (int)(d_zistepu * 0x8000 * 0x10000);
do
{
pdest = (byte *)d_viewbuffer + (screenwidth * pspan->v) + pspan->u;
pz = d_pzbuffer + (d_zwidth * pspan->v) + pspan->u;
count = pspan->count;
if (count <= 0)
goto NextSpan;
// calculate the initial s/z, t/z, 1/z, s, and t and clamp
du = (float)pspan->u;
dv = (float)pspan->v;
sdivz = d_sdivzorigin + dv*d_sdivzstepv + du*d_sdivzstepu;
tdivz = d_tdivzorigin + dv*d_tdivzstepv + du*d_tdivzstepu;
zi = d_ziorigin + dv*d_zistepv + du*d_zistepu;
z = (float)0x10000 / zi; // prescale to 16.16 fixed-point
// we count on FP exceptions being turned off to avoid range problems
izi = (int)(zi * 0x8000 * 0x10000);
s = (int)(sdivz * z) + sadjust;
if (s > bbextents)
s = bbextents;
else if (s < 0)
s = 0;
t = (int)(tdivz * z) + tadjust;
if (t > bbextentt)
t = bbextentt;
else if (t < 0)
t = 0;
do
{
// calculate s and t at the far end of the span
if (count >= 8)
spancount = 8;
else
spancount = count;
count -= spancount;
if (count)
{
// calculate s/z, t/z, zi->fixed s and t at far end of span,
// calculate s and t steps across span by shifting
sdivz += sdivz8stepu;
tdivz += tdivz8stepu;
zi += zi8stepu;
z = (float)0x10000 / zi; // prescale to 16.16 fixed-point
snext = (int)(sdivz * z) + sadjust;
if (snext > bbextents)
snext = bbextents;
else if (snext < 8)
snext = 8; // prevent round-off error on <0 steps from
// from causing overstepping & running off the
// edge of the texture
tnext = (int)(tdivz * z) + tadjust;
if (tnext > bbextentt)
tnext = bbextentt;
else if (tnext < 8)
tnext = 8; // guard against round-off error on <0 steps
sstep = (snext - s) >> 3;
tstep = (tnext - t) >> 3;
}
else
{
// calculate s/z, t/z, zi->fixed s and t at last pixel in span (so
// can't step off polygon), clamp, calculate s and t steps across
// span by division, biasing steps low so we don't run off the
// texture
spancountminus1 = (float)(spancount - 1);
sdivz += d_sdivzstepu * spancountminus1;
tdivz += d_tdivzstepu * spancountminus1;
zi += d_zistepu * spancountminus1;
z = (float)0x10000 / zi; // prescale to 16.16 fixed-point
snext = (int)(sdivz * z) + sadjust;
if (snext > bbextents)
snext = bbextents;
else if (snext < 8)
snext = 8; // prevent round-off error on <0 steps from
// from causing overstepping & running off the
// edge of the texture
tnext = (int)(tdivz * z) + tadjust;
if (tnext > bbextentt)
tnext = bbextentt;
else if (tnext < 8)
tnext = 8; // guard against round-off error on <0 steps
if (spancount > 1)
{
sstep = (snext - s) / (spancount - 1);
tstep = (tnext - t) / (spancount - 1);
}
}
do
{
btemp = *(pbase + (s >> 16) + (t >> 16) * cachewidth);
if (btemp != 255)
{
if (*pz <= (izi >> 16))
{
*pz = izi >> 16;
*pdest = btemp;
}
}
izi += izistep;
pdest++;
pz++;
s += sstep;
t += tstep;
} while (--spancount > 0);
s = snext;
t = tnext;
} while (count > 0);
NextSpan:
pspan++;
} while (pspan->count != DS_SPAN_LIST_END);
}
#endif
/*
=====================
D_SpriteScanLeftEdge
=====================
*/
void D_SpriteScanLeftEdge (void)
{
int i, v, itop, ibottom, lmaxindex;
emitpoint_t *pvert, *pnext;
sspan_t *pspan;
float du, dv, vtop, vbottom, slope;
fixed16_t u, u_step;
pspan = sprite_spans;
i = minindex;
if (i == 0)
i = r_spritedesc.nump;
lmaxindex = maxindex;
if (lmaxindex == 0)
lmaxindex = r_spritedesc.nump;
vtop = ceil (r_spritedesc.pverts[i].v);
do
{
pvert = &r_spritedesc.pverts[i];
pnext = pvert - 1;
vbottom = ceil (pnext->v);
if (vtop < vbottom)
{
du = pnext->u - pvert->u;
dv = pnext->v - pvert->v;
slope = du / dv;
u_step = (int)(slope * 0x10000);
// adjust u to ceil the integer portion
u = (int)((pvert->u + (slope * (vtop - pvert->v))) * 0x10000) +
(0x10000 - 1);
itop = (int)vtop;
ibottom = (int)vbottom;
for (v=itop ; v<ibottom ; v++)
{
pspan->u = u >> 16;
pspan->v = v;
u += u_step;
pspan++;
}
}
vtop = vbottom;
i--;
if (i == 0)
i = r_spritedesc.nump;
} while (i != lmaxindex);
}
/*
=====================
D_SpriteScanRightEdge
=====================
*/
void D_SpriteScanRightEdge (void)
{
int i, v, itop, ibottom;
emitpoint_t *pvert, *pnext;
sspan_t *pspan;
float du, dv, vtop, vbottom, slope, uvert, unext, vvert, vnext;
fixed16_t u, u_step;
pspan = sprite_spans;
i = minindex;
vvert = r_spritedesc.pverts[i].v;
if (vvert < r_refdef.fvrecty_adj)
vvert = r_refdef.fvrecty_adj;
if (vvert > r_refdef.fvrectbottom_adj)
vvert = r_refdef.fvrectbottom_adj;
vtop = ceil (vvert);
do
{
pvert = &r_spritedesc.pverts[i];
pnext = pvert + 1;
vnext = pnext->v;
if (vnext < r_refdef.fvrecty_adj)
vnext = r_refdef.fvrecty_adj;
if (vnext > r_refdef.fvrectbottom_adj)
vnext = r_refdef.fvrectbottom_adj;
vbottom = ceil (vnext);
if (vtop < vbottom)
{
uvert = pvert->u;
if (uvert < r_refdef.fvrectx_adj)
uvert = r_refdef.fvrectx_adj;
if (uvert > r_refdef.fvrectright_adj)
uvert = r_refdef.fvrectright_adj;
unext = pnext->u;
if (unext < r_refdef.fvrectx_adj)
unext = r_refdef.fvrectx_adj;
if (unext > r_refdef.fvrectright_adj)
unext = r_refdef.fvrectright_adj;
du = unext - uvert;
dv = vnext - vvert;
slope = du / dv;
u_step = (int)(slope * 0x10000);
// adjust u to ceil the integer portion
u = (int)((uvert + (slope * (vtop - vvert))) * 0x10000) +
(0x10000 - 1);
itop = (int)vtop;
ibottom = (int)vbottom;
for (v=itop ; v<ibottom ; v++)
{
pspan->count = (u >> 16) - pspan->u;
u += u_step;
pspan++;
}
}
vtop = vbottom;
vvert = vnext;
i++;
if (i == r_spritedesc.nump)
i = 0;
} while (i != maxindex);
pspan->count = DS_SPAN_LIST_END; // mark the end of the span list
}
/*
=====================
D_SpriteCalculateGradients
=====================
*/
void D_SpriteCalculateGradients (void)
{
vec3_t p_normal, p_saxis, p_taxis, p_temp1;
float distinv;
TransformVector (r_spritedesc.vpn, p_normal);
TransformVector (r_spritedesc.vright, p_saxis);
TransformVector (r_spritedesc.vup, p_taxis);
VectorInverse (p_taxis);
distinv = 1.0 / (-DotProduct (modelorg, r_spritedesc.vpn));
d_sdivzstepu = p_saxis[0] * xscaleinv;
d_tdivzstepu = p_taxis[0] * xscaleinv;
d_sdivzstepv = -p_saxis[1] * yscaleinv;
d_tdivzstepv = -p_taxis[1] * yscaleinv;
d_zistepu = p_normal[0] * xscaleinv * distinv;
d_zistepv = -p_normal[1] * yscaleinv * distinv;
d_sdivzorigin = p_saxis[2] - xcenter * d_sdivzstepu -
ycenter * d_sdivzstepv;
d_tdivzorigin = p_taxis[2] - xcenter * d_tdivzstepu -
ycenter * d_tdivzstepv;
d_ziorigin = p_normal[2] * distinv - xcenter * d_zistepu -
ycenter * d_zistepv;
TransformVector (modelorg, p_temp1);
sadjust = ((fixed16_t)(DotProduct (p_temp1, p_saxis) * 0x10000 + 0.5)) -
(-(cachewidth >> 1) << 16);
tadjust = ((fixed16_t)(DotProduct (p_temp1, p_taxis) * 0x10000 + 0.5)) -
(-(sprite_height >> 1) << 16);
// -1 (-epsilon) so we never wander off the edge of the texture
bbextents = (cachewidth << 16) - 1;
bbextentt = (sprite_height << 16) - 1;
}
/*
=====================
D_DrawSprite
=====================
*/
void D_DrawSprite (void)
{
int i, nump;
float ymin, ymax;
emitpoint_t *pverts;
sspan_t spans[MAXHEIGHT+1];
sprite_spans = spans;
// find the top and bottom vertices, and make sure there's at least one scan to
// draw
ymin = 999999.9;
ymax = -999999.9;
pverts = r_spritedesc.pverts;
for (i=0 ; i<r_spritedesc.nump ; i++)
{
if (pverts->v < ymin)
{
ymin = pverts->v;
minindex = i;
}
if (pverts->v > ymax)
{
ymax = pverts->v;
maxindex = i;
}
pverts++;
}
ymin = ceil (ymin);
ymax = ceil (ymax);
if (ymin >= ymax)
return; // doesn't cross any scans at all
cachewidth = r_spritedesc.pspriteframe->width;
sprite_height = r_spritedesc.pspriteframe->height;
cacheblock = (byte *)&r_spritedesc.pspriteframe->pixels[0];
// copy the first vertex to the last vertex, so we don't have to deal with
// wrapping
nump = r_spritedesc.nump;
pverts = r_spritedesc.pverts;
pverts[nump] = pverts[0];
D_SpriteCalculateGradients ();
D_SpriteScanLeftEdge ();
D_SpriteScanRightEdge ();
D_SpriteDrawSpans (sprite_spans);
}

50
qw_client/d_vars.c
View file

@ -1,50 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// r_vars.c: global refresh variables
#if !id386
#include "quakedef.h"
// all global and static refresh variables are collected in a contiguous block
// to avoid cache conflicts.
//-------------------------------------------------------
// global refresh variables
//-------------------------------------------------------
// FIXME: make into one big structure, like cl or sv
// FIXME: do separately for refresh engine and driver
float d_sdivzstepu, d_tdivzstepu, d_zistepu;
float d_sdivzstepv, d_tdivzstepv, d_zistepv;
float d_sdivzorigin, d_tdivzorigin, d_ziorigin;
fixed16_t sadjust, tadjust, bbextents, bbextentt;
pixel_t *cacheblock;
int cachewidth;
pixel_t *d_viewbuffer;
short *d_pzbuffer;
unsigned int d_zrowbytes;
unsigned int d_zwidth;
#endif // !id386

213
qw_client/d_varsa.s
View file

@ -1,213 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//
// d_varsa.s
//
#include "asm_i386.h"
#include "quakeasm.h"
#include "asm_draw.h"
#include "d_ifacea.h"
#if id386
.data
//-------------------------------------------------------
// global refresh variables
//-------------------------------------------------------
// FIXME: put all refresh variables into one contiguous block. Make into one
// big structure, like cl or sv?
.align 4
.globl C(d_sdivzstepu)
.globl C(d_tdivzstepu)
.globl C(d_zistepu)
.globl C(d_sdivzstepv)
.globl C(d_tdivzstepv)
.globl C(d_zistepv)
.globl C(d_sdivzorigin)
.globl C(d_tdivzorigin)
.globl C(d_ziorigin)
C(d_sdivzstepu): .single 0
C(d_tdivzstepu): .single 0
C(d_zistepu): .single 0
C(d_sdivzstepv): .single 0
C(d_tdivzstepv): .single 0
C(d_zistepv): .single 0
C(d_sdivzorigin): .single 0
C(d_tdivzorigin): .single 0
C(d_ziorigin): .single 0
.globl C(sadjust)
.globl C(tadjust)
.globl C(bbextents)
.globl C(bbextentt)
C(sadjust): .long 0
C(tadjust): .long 0
C(bbextents): .long 0
C(bbextentt): .long 0
.globl C(cacheblock)
.globl C(d_viewbuffer)
.globl C(cachewidth)
.globl C(d_pzbuffer)
.globl C(d_zrowbytes)
.globl C(d_zwidth)
C(cacheblock): .long 0
C(cachewidth): .long 0
C(d_viewbuffer): .long 0
C(d_pzbuffer): .long 0
C(d_zrowbytes): .long 0
C(d_zwidth): .long 0
//-------------------------------------------------------
// ASM-only variables
//-------------------------------------------------------
.globl izi
izi: .long 0
.globl pbase, s, t, sfracf, tfracf, snext, tnext
.globl spancountminus1, zi16stepu, sdivz16stepu, tdivz16stepu
.globl zi8stepu, sdivz8stepu, tdivz8stepu, pz
s: .long 0
t: .long 0
snext: .long 0
tnext: .long 0
sfracf: .long 0
tfracf: .long 0
pbase: .long 0
zi8stepu: .long 0
sdivz8stepu: .long 0
tdivz8stepu: .long 0
zi16stepu: .long 0
sdivz16stepu: .long 0
tdivz16stepu: .long 0
spancountminus1: .long 0
pz: .long 0
.globl izistep
izistep: .long 0
//-------------------------------------------------------
// local variables for d_draw16.s
//-------------------------------------------------------
.globl reciprocal_table_16, entryvec_table_16
// 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/9, 1/10, 1/11, 1/12, 1/13,
// 1/14, and 1/15 in 0.32 form
reciprocal_table_16: .long 0x40000000, 0x2aaaaaaa, 0x20000000
.long 0x19999999, 0x15555555, 0x12492492
.long 0x10000000, 0xe38e38e, 0xccccccc, 0xba2e8ba
.long 0xaaaaaaa, 0x9d89d89, 0x9249249, 0x8888888
#ifndef NeXT
.extern Entry2_16
.extern Entry3_16
.extern Entry4_16
.extern Entry5_16
.extern Entry6_16
.extern Entry7_16
.extern Entry8_16
.extern Entry9_16
.extern Entry10_16
.extern Entry11_16
.extern Entry12_16
.extern Entry13_16
.extern Entry14_16
.extern Entry15_16
.extern Entry16_16
#endif
entryvec_table_16: .long 0, Entry2_16, Entry3_16, Entry4_16
.long Entry5_16, Entry6_16, Entry7_16, Entry8_16
.long Entry9_16, Entry10_16, Entry11_16, Entry12_16
.long Entry13_16, Entry14_16, Entry15_16, Entry16_16
//-------------------------------------------------------
// local variables for d_parta.s
//-------------------------------------------------------
.globl DP_Count, DP_u, DP_v, DP_32768, DP_Color, DP_Pix, DP_EntryTable
DP_Count: .long 0
DP_u: .long 0
DP_v: .long 0
DP_32768: .single 32768.0
DP_Color: .long 0
DP_Pix: .long 0
#ifndef NeXT
.extern DP_1x1
.extern DP_2x2
.extern DP_3x3
.extern DP_4x4
#endif
DP_EntryTable: .long DP_1x1, DP_2x2, DP_3x3, DP_4x4
//
// advancetable is 8 bytes, but points to the middle of that range so negative
// offsets will work
//
.globl advancetable, sstep, tstep, pspantemp, counttemp, jumptemp
advancetable: .long 0, 0
sstep: .long 0
tstep: .long 0
pspantemp: .long 0
counttemp: .long 0
jumptemp: .long 0
// 1/2, 1/3, 1/4, 1/5, 1/6, and 1/7 in 0.32 form
.globl reciprocal_table, entryvec_table
reciprocal_table: .long 0x40000000, 0x2aaaaaaa, 0x20000000
.long 0x19999999, 0x15555555, 0x12492492
#ifndef NeXT
.extern Entry2_8
.extern Entry3_8
.extern Entry4_8
.extern Entry5_8
.extern Entry6_8
.extern Entry7_8
.extern Entry8_8
#endif
entryvec_table: .long 0, Entry2_8, Entry3_8, Entry4_8
.long Entry5_8, Entry6_8, Entry7_8, Entry8_8
#ifndef NeXT
.extern Spr8Entry2_8
.extern Spr8Entry3_8
.extern Spr8Entry4_8
.extern Spr8Entry5_8
.extern Spr8Entry6_8
.extern Spr8Entry7_8
.extern Spr8Entry8_8
#endif
.globl spr8entryvec_table
spr8entryvec_table: .long 0, Spr8Entry2_8, Spr8Entry3_8, Spr8Entry4_8
.long Spr8Entry5_8, Spr8Entry6_8, Spr8Entry7_8, Spr8Entry8_8
#endif // id386

47
qw_client/d_zpoint.c
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@ -1,47 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// d_zpoint.c: software driver module for drawing z-buffered points
#include "quakedef.h"
#include "d_local.h"
/*
=====================
D_DrawZPoint
=====================
*/
void D_DrawZPoint (void)
{
byte *pdest;
short *pz;
int izi;
pz = d_pzbuffer + (d_zwidth * r_zpointdesc.v) + r_zpointdesc.u;
pdest = d_viewbuffer + d_scantable[r_zpointdesc.v] + r_zpointdesc.u;
izi = (int)(r_zpointdesc.zi * 0x8000);
if (*pz <= izi)
{
*pz = izi;
*pdest = r_zpointdesc.color;
}
}

182
qw_client/gl_test.c
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@ -1,182 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "quakedef.h"
#ifdef GLTEST
typedef struct
{
plane_t *plane;
vec3_t origin;
vec3_t normal;
vec3_t up;
vec3_t right;
vec3_t reflect;
float length;
} puff_t;
#define MAX_PUFFS 64
puff_t puffs[MAX_PUFFS];
void Test_Init (void)
{
}
plane_t junk;
plane_t *HitPlane (vec3_t start, vec3_t end)
{
trace_t trace;
// fill in a default trace
memset (&trace, 0, sizeof(trace_t));
trace.fraction = 1;
trace.allsolid = true;
VectorCopy (end, trace.endpos);
SV_RecursiveHullCheck (cl.worldmodel->hulls, 0, 0, 1, start, end, &trace);
junk = trace.plane;
return &junk;
}
void Test_Spawn (vec3_t origin)
{
int i;
puff_t *p;
vec3_t temp;
vec3_t normal;
vec3_t incoming;
plane_t *plane;
float d;
for (i=0,p=puffs ; i<MAX_PUFFS ; i++,p++)
{
if (p->length <= 0)
break;
}
if (i == MAX_PUFFS)
return;
VectorSubtract (r_refdef.vieworg, origin, incoming);
VectorSubtract (origin, incoming, temp);
plane = HitPlane (r_refdef.vieworg, temp);
VectorNormalize (incoming);
d = DotProduct (incoming, plane->normal);
VectorSubtract (vec3_origin, incoming, p->reflect);
VectorMA (p->reflect, d*2, plane->normal, p->reflect);
VectorCopy (origin, p->origin);
VectorCopy (plane->normal, p->normal);
CrossProduct (incoming, p->normal, p->up);
CrossProduct (p->up, p->normal, p->right);
p->length = 8;
}
void DrawPuff (puff_t *p)
{
vec3_t pts[2][3];
int i, j;
float s, d;
for (i=0 ; i<2 ; i++)
{
if (i == 1)
{
s = 6;
d = p->length;
}
else
{
s = 2;
d = 0;
}
for (j=0 ; j<3 ; j++)
{
pts[i][0][j] = p->origin[j] + p->up[j]*s + p->reflect[j]*d;
pts[i][1][j] = p->origin[j] + p->right[j]*s + p->reflect[j]*d;
pts[i][2][j] = p->origin[j] + -p->right[j]*s + p->reflect[j]*d;
}
}
glColor3f (1, 0, 0);
#if 0
glBegin (GL_LINES);
glVertex3fv (p->origin);
glVertex3f (p->origin[0] + p->length*p->reflect[0],
p->origin[1] + p->length*p->reflect[1],
p->origin[2] + p->length*p->reflect[2]);
glVertex3fv (pts[0][0]);
glVertex3fv (pts[1][0]);
glVertex3fv (pts[0][1]);
glVertex3fv (pts[1][1]);
glVertex3fv (pts[0][2]);
glVertex3fv (pts[1][2]);
glEnd ();
#endif
glBegin (GL_QUADS);
for (i=0 ; i<3 ; i++)
{
j = (i+1)%3;
glVertex3fv (pts[0][j]);
glVertex3fv (pts[1][j]);
glVertex3fv (pts[1][i]);
glVertex3fv (pts[0][i]);
}
glEnd ();
glBegin (GL_TRIANGLES);
glVertex3fv (pts[1][0]);
glVertex3fv (pts[1][1]);
glVertex3fv (pts[1][2]);
glEnd ();
p->length -= host_frametime*2;
}
void Test_Draw (void)
{
int i;
puff_t *p;
for (i=0, p=puffs ; i<MAX_PUFFS ; i++,p++)
{
if (p->length > 0)
DrawPuff (p);
}
}
#endif

1086
qw_client/gl_warp.c
View file

File diff suppressed because it is too large Load diff

350
qw_client/r_aclip.c
View file

@ -1,350 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// r_aclip.c: clip routines for drawing Alias models directly to the screen
#include "quakedef.h"
#include "r_local.h"
#include "d_local.h"
static finalvert_t fv[2][8];
static auxvert_t av[8];
void R_AliasProjectFinalVert (finalvert_t *fv, auxvert_t *av);
void R_Alias_clip_top (finalvert_t *pfv0, finalvert_t *pfv1,
finalvert_t *out);
void R_Alias_clip_bottom (finalvert_t *pfv0, finalvert_t *pfv1,
finalvert_t *out);
void R_Alias_clip_left (finalvert_t *pfv0, finalvert_t *pfv1,
finalvert_t *out);
void R_Alias_clip_right (finalvert_t *pfv0, finalvert_t *pfv1,
finalvert_t *out);
/*
================
R_Alias_clip_z
pfv0 is the unclipped vertex, pfv1 is the z-clipped vertex
================
*/
void R_Alias_clip_z (finalvert_t *pfv0, finalvert_t *pfv1, finalvert_t *out)
{
float scale;
auxvert_t *pav0, *pav1, avout;
pav0 = &av[pfv0 - &fv[0][0]];
pav1 = &av[pfv1 - &fv[0][0]];
if (pfv0->v[1] >= pfv1->v[1])
{
scale = (ALIAS_Z_CLIP_PLANE - pav0->fv[2]) /
(pav1->fv[2] - pav0->fv[2]);
avout.fv[0] = pav0->fv[0] + (pav1->fv[0] - pav0->fv[0]) * scale;
avout.fv[1] = pav0->fv[1] + (pav1->fv[1] - pav0->fv[1]) * scale;
avout.fv[2] = ALIAS_Z_CLIP_PLANE;
out->v[2] = pfv0->v[2] + (pfv1->v[2] - pfv0->v[2]) * scale;
out->v[3] = pfv0->v[3] + (pfv1->v[3] - pfv0->v[3]) * scale;
out->v[4] = pfv0->v[4] + (pfv1->v[4] - pfv0->v[4]) * scale;
}
else
{
scale = (ALIAS_Z_CLIP_PLANE - pav1->fv[2]) /
(pav0->fv[2] - pav1->fv[2]);
avout.fv[0] = pav1->fv[0] + (pav0->fv[0] - pav1->fv[0]) * scale;
avout.fv[1] = pav1->fv[1] + (pav0->fv[1] - pav1->fv[1]) * scale;
avout.fv[2] = ALIAS_Z_CLIP_PLANE;
out->v[2] = pfv1->v[2] + (pfv0->v[2] - pfv1->v[2]) * scale;
out->v[3] = pfv1->v[3] + (pfv0->v[3] - pfv1->v[3]) * scale;
out->v[4] = pfv1->v[4] + (pfv0->v[4] - pfv1->v[4]) * scale;
}
R_AliasProjectFinalVert (out, &avout);
if (out->v[0] < r_refdef.aliasvrect.x)
out->flags |= ALIAS_LEFT_CLIP;
if (out->v[1] < r_refdef.aliasvrect.y)
out->flags |= ALIAS_TOP_CLIP;
if (out->v[0] > r_refdef.aliasvrectright)
out->flags |= ALIAS_RIGHT_CLIP;
if (out->v[1] > r_refdef.aliasvrectbottom)
out->flags |= ALIAS_BOTTOM_CLIP;
}
#if !id386
void R_Alias_clip_left (finalvert_t *pfv0, finalvert_t *pfv1, finalvert_t *out)
{
float scale;
int i;
if (pfv0->v[1] >= pfv1->v[1])
{
scale = (float)(r_refdef.aliasvrect.x - pfv0->v[0]) /
(pfv1->v[0] - pfv0->v[0]);
for (i=0 ; i<6 ; i++)
out->v[i] = pfv0->v[i] + (pfv1->v[i] - pfv0->v[i])*scale + 0.5;
}
else
{
scale = (float)(r_refdef.aliasvrect.x - pfv1->v[0]) /
(pfv0->v[0] - pfv1->v[0]);
for (i=0 ; i<6 ; i++)
out->v[i] = pfv1->v[i] + (pfv0->v[i] - pfv1->v[i])*scale + 0.5;
}
}
void R_Alias_clip_right (finalvert_t *pfv0, finalvert_t *pfv1,
finalvert_t *out)
{
float scale;
int i;
if (pfv0->v[1] >= pfv1->v[1])
{
scale = (float)(r_refdef.aliasvrectright - pfv0->v[0]) /
(pfv1->v[0] - pfv0->v[0]);
for (i=0 ; i<6 ; i++)
out->v[i] = pfv0->v[i] + (pfv1->v[i] - pfv0->v[i])*scale + 0.5;
}
else
{
scale = (float)(r_refdef.aliasvrectright - pfv1->v[0]) /
(pfv0->v[0] - pfv1->v[0]);
for (i=0 ; i<6 ; i++)
out->v[i] = pfv1->v[i] + (pfv0->v[i] - pfv1->v[i])*scale + 0.5;
}
}
void R_Alias_clip_top (finalvert_t *pfv0, finalvert_t *pfv1, finalvert_t *out)
{
float scale;
int i;
if (pfv0->v[1] >= pfv1->v[1])
{
scale = (float)(r_refdef.aliasvrect.y - pfv0->v[1]) /
(pfv1->v[1] - pfv0->v[1]);
for (i=0 ; i<6 ; i++)
out->v[i] = pfv0->v[i] + (pfv1->v[i] - pfv0->v[i])*scale + 0.5;
}
else
{
scale = (float)(r_refdef.aliasvrect.y - pfv1->v[1]) /
(pfv0->v[1] - pfv1->v[1]);
for (i=0 ; i<6 ; i++)
out->v[i] = pfv1->v[i] + (pfv0->v[i] - pfv1->v[i])*scale + 0.5;
}
}
void R_Alias_clip_bottom (finalvert_t *pfv0, finalvert_t *pfv1,
finalvert_t *out)
{
float scale;
int i;
if (pfv0->v[1] >= pfv1->v[1])
{
scale = (float)(r_refdef.aliasvrectbottom - pfv0->v[1]) /
(pfv1->v[1] - pfv0->v[1]);
for (i=0 ; i<6 ; i++)
out->v[i] = pfv0->v[i] + (pfv1->v[i] - pfv0->v[i])*scale + 0.5;
}
else
{
scale = (float)(r_refdef.aliasvrectbottom - pfv1->v[1]) /
(pfv0->v[1] - pfv1->v[1]);
for (i=0 ; i<6 ; i++)
out->v[i] = pfv1->v[i] + (pfv0->v[i] - pfv1->v[i])*scale + 0.5;
}
}
#endif
int R_AliasClip (finalvert_t *in, finalvert_t *out, int flag, int count,
void(*clip)(finalvert_t *pfv0, finalvert_t *pfv1, finalvert_t *out) )
{
int i,j,k;
int flags, oldflags;
j = count-1;
k = 0;
for (i=0 ; i<count ; j = i, i++)
{
oldflags = in[j].flags & flag;
flags = in[i].flags & flag;
if (flags && oldflags)
continue;
if (oldflags ^ flags)
{
clip (&in[j], &in[i], &out[k]);
out[k].flags = 0;
if (out[k].v[0] < r_refdef.aliasvrect.x)
out[k].flags |= ALIAS_LEFT_CLIP;
if (out[k].v[1] < r_refdef.aliasvrect.y)
out[k].flags |= ALIAS_TOP_CLIP;
if (out[k].v[0] > r_refdef.aliasvrectright)
out[k].flags |= ALIAS_RIGHT_CLIP;
if (out[k].v[1] > r_refdef.aliasvrectbottom)
out[k].flags |= ALIAS_BOTTOM_CLIP;
k++;
}
if (!flags)
{
out[k] = in[i];
k++;
}
}
return k;
}
/*
================
R_AliasClipTriangle
================
*/
void R_AliasClipTriangle (mtriangle_t *ptri)
{
int i, k, pingpong;
mtriangle_t mtri;
unsigned clipflags;
// copy vertexes and fix seam texture coordinates
if (ptri->facesfront)
{
fv[0][0] = pfinalverts[ptri->vertindex[0]];
fv[0][1] = pfinalverts[ptri->vertindex[1]];
fv[0][2] = pfinalverts[ptri->vertindex[2]];
}
else
{
for (i=0 ; i<3 ; i++)
{
fv[0][i] = pfinalverts[ptri->vertindex[i]];
if (!ptri->facesfront && (fv[0][i].flags & ALIAS_ONSEAM) )
fv[0][i].v[2] += r_affinetridesc.seamfixupX16;
}
}
// clip
clipflags = fv[0][0].flags | fv[0][1].flags | fv[0][2].flags;
if (clipflags & ALIAS_Z_CLIP)
{
for (i=0 ; i<3 ; i++)
av[i] = pauxverts[ptri->vertindex[i]];
k = R_AliasClip (fv[0], fv[1], ALIAS_Z_CLIP, 3, R_Alias_clip_z);
if (k == 0)
return;
pingpong = 1;
clipflags = fv[1][0].flags | fv[1][1].flags | fv[1][2].flags;
}
else
{
pingpong = 0;
k = 3;
}
if (clipflags & ALIAS_LEFT_CLIP)
{
k = R_AliasClip (fv[pingpong], fv[pingpong ^ 1],
ALIAS_LEFT_CLIP, k, R_Alias_clip_left);
if (k == 0)
return;
pingpong ^= 1;
}
if (clipflags & ALIAS_RIGHT_CLIP)
{
k = R_AliasClip (fv[pingpong], fv[pingpong ^ 1],
ALIAS_RIGHT_CLIP, k, R_Alias_clip_right);
if (k == 0)
return;
pingpong ^= 1;
}
if (clipflags & ALIAS_BOTTOM_CLIP)
{
k = R_AliasClip (fv[pingpong], fv[pingpong ^ 1],
ALIAS_BOTTOM_CLIP, k, R_Alias_clip_bottom);
if (k == 0)
return;
pingpong ^= 1;
}
if (clipflags & ALIAS_TOP_CLIP)
{
k = R_AliasClip (fv[pingpong], fv[pingpong ^ 1],
ALIAS_TOP_CLIP, k, R_Alias_clip_top);
if (k == 0)
return;
pingpong ^= 1;
}
for (i=0 ; i<k ; i++)
{
if (fv[pingpong][i].v[0] < r_refdef.aliasvrect.x)
fv[pingpong][i].v[0] = r_refdef.aliasvrect.x;
else if (fv[pingpong][i].v[0] > r_refdef.aliasvrectright)
fv[pingpong][i].v[0] = r_refdef.aliasvrectright;
if (fv[pingpong][i].v[1] < r_refdef.aliasvrect.y)
fv[pingpong][i].v[1] = r_refdef.aliasvrect.y;
else if (fv[pingpong][i].v[1] > r_refdef.aliasvrectbottom)
fv[pingpong][i].v[1] = r_refdef.aliasvrectbottom;
fv[pingpong][i].flags = 0;
}
// draw triangles
mtri.facesfront = ptri->facesfront;
r_affinetridesc.ptriangles = &mtri;
r_affinetridesc.pfinalverts = fv[pingpong];
// FIXME: do all at once as trifan?
mtri.vertindex[0] = 0;
for (i=1 ; i<k-1 ; i++)
{
mtri.vertindex[1] = i;
mtri.vertindex[2] = i+1;
D_PolysetDraw ();
}
}

727
qw_client/snd_win.c
View file

@ -1,727 +0,0 @@
/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "quakedef.h"
#include "winquake.h"
#define iDirectSoundCreate(a,b,c) pDirectSoundCreate(a,b,c)
HRESULT (WINAPI *pDirectSoundCreate)(GUID FAR *lpGUID, LPDIRECTSOUND FAR *lplpDS, IUnknown FAR *pUnkOuter);
// 64K is > 1 second at 16-bit, 22050 Hz
#define WAV_BUFFERS 64
#define WAV_MASK 0x3F
#define WAV_BUFFER_SIZE 0x0400
#define SECONDARY_BUFFER_SIZE 0x10000
typedef enum {SIS_SUCCESS, SIS_FAILURE, SIS_NOTAVAIL} sndinitstat;
static qboolean wavonly;
static qboolean dsound_init;
static qboolean wav_init;
static qboolean snd_firsttime = true, snd_isdirect, snd_iswave;
static qboolean primary_format_set;
static int sample16;
static int snd_sent, snd_completed;
/*
* Global variables. Must be visible to window-procedure function
* so it can unlock and free the data block after it has been played.
*/
HANDLE hData;
HPSTR lpData, lpData2;
HGLOBAL hWaveHdr;
LPWAVEHDR lpWaveHdr;
HWAVEOUT hWaveOut;
WAVEOUTCAPS wavecaps;
DWORD gSndBufSize;
MMTIME mmstarttime;
LPDIRECTSOUND pDS;
LPDIRECTSOUNDBUFFER pDSBuf, pDSPBuf;
HINSTANCE hInstDS;
qboolean SNDDMA_InitDirect (void);
qboolean SNDDMA_InitWav (void);
/*
==================
S_BlockSound
==================
*/
void S_BlockSound (void)
{
// DirectSound takes care of blocking itself
if (snd_iswave)
{
snd_blocked++;
if (snd_blocked == 1)
waveOutReset (hWaveOut);
}
}
/*
==================
S_UnblockSound
==================
*/
void S_UnblockSound (void)
{
// DirectSound takes care of blocking itself
if (snd_iswave)
{
snd_blocked--;
}
}
/*
==================
FreeSound
==================
*/
void FreeSound (void)
{
int i;
if (pDSBuf)
{
pDSBuf->lpVtbl->Stop(pDSBuf);
pDSBuf->lpVtbl->Release(pDSBuf);
}
// only release primary buffer if it's not also the mixing buffer we just released
if (pDSPBuf && (pDSBuf != pDSPBuf))
{
pDSPBuf->lpVtbl->Release(pDSPBuf);
}
if (pDS)
{
pDS->lpVtbl->SetCooperativeLevel (pDS, mainwindow, DSSCL_NORMAL);
pDS->lpVtbl->Release(pDS);
}
if (hWaveOut)
{
waveOutReset (hWaveOut);
if (lpWaveHdr)
{
for (i=0 ; i< WAV_BUFFERS ; i++)
waveOutUnprepareHeader (hWaveOut, lpWaveHdr+i, sizeof(WAVEHDR));
}
waveOutClose (hWaveOut);
if (hWaveHdr)
{
GlobalUnlock(hWaveHdr);
GlobalFree(hWaveHdr);
}
if (hData)
{
GlobalUnlock(hData);
GlobalFree(hData);
}
}
pDS = NULL;
pDSBuf = NULL;
pDSPBuf = NULL;
hWaveOut = 0;
hData = 0;
hWaveHdr = 0;
lpData = NULL;
lpWaveHdr = NULL;
dsound_init = false;
wav_init = false;
}
/*
==================
SNDDMA_InitDirect
Direct-Sound support
==================
*/
sndinitstat SNDDMA_InitDirect (void)
{
DSBUFFERDESC dsbuf;
DSBCAPS dsbcaps;
DWORD dwSize, dwWrite;
DSCAPS dscaps;
WAVEFORMATEX format, pformat;
HRESULT hresult;
int reps;
memset ((void *)&sn, 0, sizeof (sn));
shm = &sn;
shm->channels = 2;
shm->samplebits = 16;
shm->speed = 11025;
memset (&format, 0, sizeof(format));
format.wFormatTag = WAVE_FORMAT_PCM;
format.nChannels = shm->channels;
format.wBitsPerSample = shm->samplebits;
format.nSamplesPerSec = shm->speed;
format.nBlockAlign = format.nChannels
*format.wBitsPerSample / 8;
format.cbSize = 0;
format.nAvgBytesPerSec = format.nSamplesPerSec
*format.nBlockAlign;
if (!hInstDS)
{
hInstDS = LoadLibrary("dsound.dll");
if (hInstDS == NULL)
{
Con_SafePrintf ("Couldn't load dsound.dll\n");
return SIS_FAILURE;
}
pDirectSoundCreate = (void *)GetProcAddress(hInstDS,"DirectSoundCreate");
if (!pDirectSoundCreate)
{
Con_SafePrintf ("Couldn't get DS proc addr\n");
return SIS_FAILURE;
}
}
while ((hresult = iDirectSoundCreate(NULL, &pDS, NULL)) != DS_OK)
{
if (hresult != DSERR_ALLOCATED)
{
Con_SafePrintf ("DirectSound create failed\n");
return SIS_FAILURE;
}
if (MessageBox (NULL,
"The sound hardware is in use by another app.\n\n"
"Select Retry to try to start sound again or Cancel to run Quake with no sound.",
"Sound not available",
MB_RETRYCANCEL | MB_SETFOREGROUND | MB_ICONEXCLAMATION) != IDRETRY)
{
Con_SafePrintf ("DirectSoundCreate failure\n"
" hardware already in use\n");
return SIS_NOTAVAIL;
}
}
dscaps.dwSize = sizeof(dscaps);
if (DS_OK != pDS->lpVtbl->GetCaps (pDS, &dscaps))
{
Con_SafePrintf ("Couldn't get DS caps\n");
}
if (dscaps.dwFlags & DSCAPS_EMULDRIVER)
{
Con_SafePrintf ("No DirectSound driver installed\n");
FreeSound ();
return SIS_FAILURE;
}
if (DS_OK != pDS->lpVtbl->SetCooperativeLevel (pDS, mainwindow, DSSCL_EXCLUSIVE))
{
Con_SafePrintf ("Set coop level failed\n");
FreeSound ();
return SIS_FAILURE;
}
// get access to the primary buffer, if possible, so we can set the
// sound hardware format
memset (&dsbuf, 0, sizeof(dsbuf));
dsbuf.dwSize = sizeof(DSBUFFERDESC);
dsbuf.dwFlags = DSBCAPS_PRIMARYBUFFER;
dsbuf.dwBufferBytes = 0;
dsbuf.lpwfxFormat = NULL;
memset(&dsbcaps, 0, sizeof(dsbcaps));
dsbcaps.dwSize = sizeof(dsbcaps);
primary_format_set = false;
if (!COM_CheckParm ("-snoforceformat"))
{
if (DS_OK == pDS->lpVtbl->CreateSoundBuffer(pDS, &dsbuf, &pDSPBuf, NULL))
{
pformat = format;
if (DS_OK != pDSPBuf->lpVtbl->SetFormat (pDSPBuf, &pformat))
{
// if (snd_firsttime)
// Con_SafePrintf ("Set primary sound buffer format: no\n");
}
else
// {
// if (snd_firsttime)
// Con_SafePrintf ("Set primary sound buffer format: yes\n");
primary_format_set = true;
// }
}
}
if (!primary_format_set || !COM_CheckParm ("-primarysound"))
{
// create the secondary buffer we'll actually work with
memset (&dsbuf, 0, sizeof(dsbuf));
dsbuf.dwSize = sizeof(DSBUFFERDESC);
dsbuf.dwFlags = DSBCAPS_CTRLFREQUENCY | DSBCAPS_LOCSOFTWARE;
dsbuf.dwBufferBytes = SECONDARY_BUFFER_SIZE;
dsbuf.lpwfxFormat = &format;
memset(&dsbcaps, 0, sizeof(dsbcaps));
dsbcaps.dwSize = sizeof(dsbcaps);
if (DS_OK != pDS->lpVtbl->CreateSoundBuffer(pDS, &dsbuf, &pDSBuf, NULL))
{
Con_SafePrintf ("DS:CreateSoundBuffer Failed");
FreeSound ();
return SIS_FAILURE;
}
shm->channels = format.nChannels;
shm->samplebits = format.wBitsPerSample;
shm->speed = format.nSamplesPerSec;
if (DS_OK != pDSBuf->lpVtbl->GetCaps (pDSBuf, &dsbcaps))
{
Con_SafePrintf ("DS:GetCaps failed\n");
FreeSound ();
return SIS_FAILURE;
}
// if (snd_firsttime)
// Con_SafePrintf ("Using secondary sound buffer\n");
}
else
{
if (DS_OK != pDS->lpVtbl->SetCooperativeLevel (pDS, mainwindow, DSSCL_WRITEPRIMARY))
{
Con_SafePrintf ("Set coop level failed\n");
FreeSound ();
return SIS_FAILURE;
}
if (DS_OK != pDSPBuf->lpVtbl->GetCaps (pDSPBuf, &dsbcaps))
{
Con_Printf ("DS:GetCaps failed\n");
return SIS_FAILURE;
}
pDSBuf = pDSPBuf;
// Con_SafePrintf ("Using primary sound buffer\n");
}
// Make sure mixer is active
pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
/* if (snd_firsttime)
Con_SafePrintf(" %d channel(s)\n"
" %d bits/sample\n"
" %d bytes/sec\n",
shm->channels, shm->samplebits, shm->speed);*/
gSndBufSize = dsbcaps.dwBufferBytes;
// initialize the buffer
reps = 0;
while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, &lpData, &dwSize, NULL, NULL, 0)) != DS_OK)
{
if (hresult != DSERR_BUFFERLOST)
{
Con_SafePrintf ("SNDDMA_InitDirect: DS::Lock Sound Buffer Failed\n");
FreeSound ();
return SIS_FAILURE;
}
if (++reps > 10000)
{
Con_SafePrintf ("SNDDMA_InitDirect: DS: couldn't restore buffer\n");
FreeSound ();
return SIS_FAILURE;
}
}
memset(lpData, 0, dwSize);
// lpData[4] = lpData[5] = 0x7f; // force a pop for debugging
pDSBuf->lpVtbl->Unlock(pDSBuf, lpData, dwSize, NULL, 0);
/* we don't want anyone to access the buffer directly w/o locking it first. */
lpData = NULL;
pDSBuf->lpVtbl->Stop(pDSBuf);
pDSBuf->lpVtbl->GetCurrentPosition(pDSBuf, &mmstarttime.u.sample, &dwWrite);
pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
shm->soundalive = true;
shm->splitbuffer = false;
shm->samples = gSndBufSize/(shm->samplebits/8);
shm->samplepos = 0;
shm->submission_chunk = 1;
shm->buffer = (unsigned char *) lpData;
sample16 = (shm->samplebits/8) - 1;
dsound_init = true;
return SIS_SUCCESS;
}
/*
==================
SNDDM_InitWav
Crappy windows multimedia base
==================
*/
qboolean SNDDMA_InitWav (void)
{
WAVEFORMATEX format;
int i;
HRESULT hr;
snd_sent = 0;
snd_completed = 0;
shm = &sn;
shm->channels = 2;
shm->samplebits = 16;
shm->speed = 11025;
memset (&format, 0, sizeof(format));
format.wFormatTag = WAVE_FORMAT_PCM;
format.nChannels = shm->channels;
format.wBitsPerSample = shm->samplebits;
format.nSamplesPerSec = shm->speed;
format.nBlockAlign = format.nChannels
*format.wBitsPerSample / 8;
format.cbSize = 0;
format.nAvgBytesPerSec = format.nSamplesPerSec
*format.nBlockAlign;
/* Open a waveform device for output using window callback. */
while ((hr = waveOutOpen((LPHWAVEOUT)&hWaveOut, WAVE_MAPPER,
&format,
0, 0L, CALLBACK_NULL)) != MMSYSERR_NOERROR)
{
if (hr != MMSYSERR_ALLOCATED)
{
Con_SafePrintf ("waveOutOpen failed\n");
return false;
}
if (MessageBox (NULL,
"The sound hardware is in use by another app.\n\n"
"Select Retry to try to start sound again or Cancel to run Quake with no sound.",
"Sound not available",
MB_RETRYCANCEL | MB_SETFOREGROUND | MB_ICONEXCLAMATION) != IDRETRY)
{
Con_SafePrintf ("waveOutOpen failure;\n"
" hardware already in use\n");
return false;
}
}
/*
* Allocate and lock memory for the waveform data. The memory
* for waveform data must be globally allocated with
* GMEM_MOVEABLE and GMEM_SHARE flags.
*/
gSndBufSize = WAV_BUFFERS*WAV_BUFFER_SIZE;
hData = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, gSndBufSize);
if (!hData)
{
Con_SafePrintf ("Sound: Out of memory.\n");
FreeSound ();
return false;
}
lpData = GlobalLock(hData);
if (!lpData)
{
Con_SafePrintf ("Sound: Failed to lock.\n");
FreeSound ();
return false;
}
memset (lpData, 0, gSndBufSize);
/*
* Allocate and lock memory for the header. This memory must
* also be globally allocated with GMEM_MOVEABLE and
* GMEM_SHARE flags.
*/
hWaveHdr = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
(DWORD) sizeof(WAVEHDR) * WAV_BUFFERS);
if (hWaveHdr == NULL)
{
Con_SafePrintf ("Sound: Failed to Alloc header.\n");
FreeSound ();
return false;
}
lpWaveHdr = (LPWAVEHDR) GlobalLock(hWaveHdr);
if (lpWaveHdr == NULL)
{
Con_SafePrintf ("Sound: Failed to lock header.\n");
FreeSound ();
return false;
}
memset (lpWaveHdr, 0, sizeof(WAVEHDR) * WAV_BUFFERS);
/* After allocation, set up and prepare headers. */
for (i=0 ; i<WAV_BUFFERS ; i++)
{
lpWaveHdr[i].dwBufferLength = WAV_BUFFER_SIZE;
lpWaveHdr[i].lpData = lpData + i*WAV_BUFFER_SIZE;
if (waveOutPrepareHeader(hWaveOut, lpWaveHdr+i, sizeof(WAVEHDR)) !=
MMSYSERR_NOERROR)
{
Con_SafePrintf ("Sound: failed to prepare wave headers\n");
FreeSound ();
return false;
}
}
shm->soundalive = true;
shm->splitbuffer = false;
shm->samples = gSndBufSize/(shm->samplebits/8);
shm->samplepos = 0;
shm->submission_chunk = 1;
shm->buffer = (unsigned char *) lpData;
sample16 = (shm->samplebits/8) - 1;
wav_init = true;
return true;
}
/*
==================
SNDDMA_Init
Try to find a sound device to mix for.
Returns false if nothing is found.
==================
*/
int SNDDMA_Init(void)
{
sndinitstat stat;
if (COM_CheckParm ("-wavonly"))
wavonly = true;
dsound_init = wav_init = 0;
stat = SIS_FAILURE; // assume DirectSound won't initialize
/* Init DirectSound */
if (!wavonly)
{
if (snd_firsttime || snd_isdirect)
{
stat = SNDDMA_InitDirect ();;
if (stat == SIS_SUCCESS)
{
snd_isdirect = true;
if (snd_firsttime)
Con_SafePrintf ("DirectSound initialized\n");
}
else
{
snd_isdirect = false;
Con_SafePrintf ("DirectSound failed to init\n");
}
}
}
// if DirectSound didn't succeed in initializing, try to initialize
// waveOut sound, unless DirectSound failed because the hardware is
// already allocated (in which case the user has already chosen not
// to have sound)
if (!dsound_init && (stat != SIS_NOTAVAIL))
{
if (snd_firsttime || snd_iswave)
{
snd_iswave = SNDDMA_InitWav ();
if (snd_iswave)
{
if (snd_firsttime)
Con_SafePrintf ("Wave sound initialized\n");
}
else
{
Con_SafePrintf ("Wave sound failed to init\n");
}
}
}
snd_firsttime = false;
if (!dsound_init && !wav_init)
{
if (snd_firsttime)
Con_SafePrintf ("No sound device initialized\n");
return 0;
}
return 1;
}
/*
==============
SNDDMA_GetDMAPos
return the current sample position (in mono samples read)
inside the recirculating dma buffer, so the mixing code will know
how many sample are required to fill it up.
===============
*/
int SNDDMA_GetDMAPos(void)
{
MMTIME mmtime;
int s;
DWORD dwWrite;
if (dsound_init)
{
mmtime.wType = TIME_SAMPLES;
pDSBuf->lpVtbl->GetCurrentPosition(pDSBuf, &mmtime.u.sample, &dwWrite);
s = mmtime.u.sample - mmstarttime.u.sample;
}
else if (wav_init)
{
s = snd_sent * WAV_BUFFER_SIZE;
}
s >>= sample16;
s &= (shm->samples-1);
return s;
}
/*
==============
SNDDMA_Submit
Send sound to device if buffer isn't really the dma buffer
===============
*/
void SNDDMA_Submit(void)
{
LPWAVEHDR h;
int wResult;
if (!wav_init)
return;
//
// find which sound blocks have completed
//
while (1)
{
if ( snd_completed == snd_sent )
{
Con_DPrintf ("Sound overrun\n");
break;
}
if ( ! (lpWaveHdr[ snd_completed & WAV_MASK].dwFlags & WHDR_DONE) )
{
break;
}
snd_completed++; // this buffer has been played
}
//
// submit two new sound blocks
//
while (((snd_sent - snd_completed) >> sample16) < 4)
{
h = lpWaveHdr + ( snd_sent&WAV_MASK );
snd_sent++;
/*
* Now the data block can be sent to the output device. The
* waveOutWrite function returns immediately and waveform
* data is sent to the output device in the background.
*/
wResult = waveOutWrite(hWaveOut, h, sizeof(WAVEHDR));
if (wResult != MMSYSERR_NOERROR)
{
Con_SafePrintf ("Failed to write block to device\n");
FreeSound ();
return;
}
}
}
/*
==============
SNDDMA_Shutdown
Reset the sound device for exiting
===============
*/
void SNDDMA_Shutdown(void)
{
FreeSound ();
}