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fixed 3dnow! and mmx texture download routines

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This commit is contained in:
koolsmoky
2004-11-25 19:12:22 +00:00
parent e870206226
commit 1b53dbd236
1 changed files with 15 additions and 9 deletions
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24
glide3x/cvg/glide3/src/xtexdl.asm
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@@ -19,6 +19,9 @@
;; $Header$
;; $Revision$
;; $Log$
;; Revision 1.1.1.1.8.1 2003/11/03 13:34:30 dborca
;; Voodoo2 happiness (DJGPP & Linux)
;;
;; Revision 1.1.8.7 2003/09/12 05:08:35 koolsmoky
;; preparing for graphic context checks
;;
@@ -172,24 +175,27 @@ proc _grTexDownload_MMX, 24
mov [esp + _maxS$], curS ; save scan line width (in bytes)
shl edx, 3 ; packetHdr<21:3> = maxS = scanline width in DWORDs
imul eax, curS ; TEX_ROW_ADDR_INCR(minT) = minT * TEX_ROW_ADDR_INCR(1)
shl eax, 9 ; TEX_ROW_ADDR_INCR(minT) = minT << 9
movd mm2, curS ; 0 | TEX_ROW_ADDR_INCR(1)
or edx, 00000005h ; packetHdr<31:30> = lfb port
or edx, 0xc0000005 ; packetHdr<31:30> = texture port
; packetHdr<21:3> = maxS
; packetHdr<2:0> = packetType 5
; packetHdr<2:0> = packetType 5
movd mm1, edx ; 0 | packetHdr
movd mm4, eax ; 0 | TEX_ROW_ADDR_INCR(minT)
movd mm2, eax ; 0 | TEX_ROW_ADDR_INCR(minT)
paddd mm3, mm2 ; 0 | texAddr = texBaseAddr + TEX_ROW_ADDR_INCR(minT)
movd mm2, [gc + tex_ptr] ; 0 | gc->tex_ptr
psubd mm3, mm2 ; 0 | texAddr - gc->tex_ptr
mov eax, 0x200 ; TEX_ROW_ADDR_INCR(1) = 1 << 9
movd mm2, eax ; 0 | TEX_ROW_ADDR_INCR(1)
psllq mm2, 32 ; TEX_ROW_ADDR_INCR(1) | 0
paddd mm3, mm4 ; 0 | texAddr = texBaseAddr + TEX_ROW_ADDR_INCR(minT)
mov fRoom, [gc + fifoRoom] ; get available fifoRoom (in bytes)
punpckldq mm1, mm3 ; hdr2 = texAddr | hdr1 = packetHdr
punpckldq mm1, mm3 ; hdr2 = texAddr - gc->tex_ptr | hdr1 = packetHdr
;; ebx = curT, edi = dataPtr, esi = gc, ebp = fifo, ecx = curS = maxS
;; edx = fifoRoom, mm1 = texAddr|packetHdr, mm2 = TEX_ROW_ADDR_INCR(1)|0
;; edx = fifoRoom, mm1 = texAddr-gc->tex_ptr|packetHdr, mm2 = TEX_ROW_ADDR_INCR(1)|0
test fifo, 4 ; is fifo QWORD aligned ?
jz .startDownload ; yup, start texture download
@@ -227,7 +233,7 @@ proc _grTexDownload_MMX, 24
align 32
;; ebx = curT, edi = dataPtr, esi = gc, ebp = fifo, ecx = maxS = curS
;; edx=fifoRoom, mm1 = texAddr|packetHdr, mm2 = TEX_ROW_ADDR_INCR(1)|0
;; edx=fifoRoom, mm1 = texAddr-gc->tex_ptr|packetHdr, mm2 = TEX_ROW_ADDR_INCR(1)|0
.loopT: