gs2bg1cycL.s
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/*---------------------------------------------------------------------
Copyright (C) 1997, Nintendo.
File gs2bg1cycL.s
Coded by Yoshitaka Yasumoto. May 27, 1997.
Modified by
Comments
$Id: gs2bg1cycL.s,v 1.1.1.1 2002/05/02 03:29:12 blythe Exp $
---------------------------------------------------------------------*/
#!Reserved (0,11,12,17,18,19,20,23,24,25,26,27,30,31)
#!Reserved (v0,v1,v27,v28,v29,v30,v31)
#ifndef BG1CYCL_LIST
#define BG1CYCL_LIST
#----------------------------------------------------------------------------
# 前半パート
#----------------------------------------------------------------------------
#----------------------------------------------------------------------------
# case_G_BG_1CYC_Cont:
# 拡大縮小可能な BG の作画ルーチンの本体
#
# typedef struct {
# u16 imageX; /*テクスチャの左上位置 X 座標 (u11.5)*/
# u16 imageW; /*テクスチャの幅*/
# u16 frameX; /*転送されるフレームの左上位置*/
# u16 frameW; /*転送されるフレームの幅*/
# u16 imageY; /*テクスチャの左上位置 Y 座標 (u11.5)*/
# u16 imageH; /*テクスチャの高さ*/
# u16 frameY; /*転送されるフレームの左上位置*/
# u16 frameH; /*転送されるフレームの高さ*/
# u64 *imagePtr; /*DRAM 上のテクスチャソースアドレス*/
# u16 imageLoad;
# u8 imageFmt;
# u8 imageSiz;
# u16 imagePal;
# u16 imageFlip;
#
# u16 scaleW;
# u16 scaleH;
# s32 imageYorig;
#
# u8 padding[4];
#
# } uObjScaleBg_t; /* 36 バイト使用 */
#
# BG 用転送処理
#----------------------------------------------------------------------------
#---------------------------------------------------------------------
# DMA 転送をかける.
#---------------------------------------------------------------------
AssignForDMAproc
jal DMAread
_li (dma_len, 39) # dram_adrs は AdrsFixup で設定
#---------------------------------------------------------------------
# DMA 転送終了を待ち. その間にパラメータのロードを行なう.
# 転送終了後 Object のジオメトリデータおよびイメージデータを取得.
#---------------------------------------------------------------------
Assign(tptr, 1)
Assign(scissor, v2)
_li (tptr, RSP_TMP_AREA)
#ifdef UCODE_S2DEX2
llv scissor[4], oRSP_SCISSOR_XL(vecptr) # [2|3] = [SXL|SXH]
jal DMAwait
llv scissor[12], oRSP_SCISSOR_YL(vecptr) # [6|7] = [SYL|SYH]
#else
llv scissor[4], RSP_STATEP_SCISSOR_XL(zero) # [2|3] = [SXL|SXH]
jal DMAwait
llv scissor[12], RSP_STATEP_SCISSOR_YL(zero) # [6|7] = [SYL|SYH]
#endif
EndAssignForDMAproc
#---------------------------------------------------------------------
# 拡大パラメータの取得
#---------------------------------------------------------------------
Assign(bgparam, v3)
Assign(vscale, v4)
lqv bgparam[0], RSP_BG_IMAGEX($20)
lsv vscale[0], RSP_SBG_SCALEW($20)
lsv vscale[8], RSP_SBG_SCALEH($20)
Assign(vscalei, v5)
Assign(vscalef, v6)
Assign(ivscalei, v7)
Assign(ivscalef, v8)
vmudm vscalei, vscale, _0x0040 # (s5.10)->(s15.16) [0|4]
vmadn vscalef, vconst, _0x0000
vrcp ivscalef[0], vscale[0] # (s5.10)->(s11.20) [0|4]
vrcph ivscalei[0], _0x0000
vrcp ivscalef[4], vscale[4]
vrcph ivscalei[4], _0x0000
vmudn vtmp, vone, _0x0001
vmadl vtmp, ivscalef, _0x0800 # (s11.20)->(s15.16) [0|4]
vmadm ivscalei, ivscalei, _0x0800
vmadn ivscalef, vconst, _0x0000
Assign(bgparami, v10)
vmudn vtmp, bgparam, _0x4000 # [3|7]
vmadh bgparami, vconst, _0x0000
Assign(frameMaxL, v11)
Assign(frameMaxH, v12)
Assign(frameWH, v13)
Assign(imageFlip, 2)
#
# イメージと拡大率からフレームの最大サイズを求める
# frameWmax = ((((s32)bg->s.imageW << 10) / scaleW)-1) & ~3
# frameHmax = ((((s32)bg->s.imageH << 10) / scaleH)-1) & ~3
#
lbu imageFlip, RSP_INPUT_BG+RSP_BG_IMAGEFLIP(zero)
vmudn vtmp, vone, _0xffff
vmadl vtmp, ivscalef, bgparam[1h] # [0|4]
andi imageFlip, imageFlip, 0x01
vmadm frameMaxH, ivscalei, bgparam[1h] # [0|4]
vmadn frameMaxL, vconst, _0x0000 # [0|4]
vand frameMaxL, frameMaxL, _0xfffc # [0|4]
# フレームサイズをクランプする
vsubc frameMaxL, bgparam, frameMaxL[0h] # [3|7]
vsub frameMaxH, vzero, frameMaxH[0h] # [3|7]
vge frameMaxH, frameMaxH, _0x0000 # [3|7]
vmrg frameMaxL, frameMaxL, _0x0000 # [3|7]
beq imageFlip, zero, bg1cyc_skip1
vsub frameWH, bgparam, frameMaxL[3h] # [3|7]
# X-Flip なら frameX0 += frameWmax
vadd vtmp, bgparam, frameMaxL[3] # [2]
vmov bgparam[2], vtmp[2]
bg1cyc_skip1:
EndAssign(frameMaxL, v11)
EndAssign(frameMaxH, v12)
### imageFlip, tptr
### scissor, bgparam
### vscale, vscalei, vscalef, ivscalei, ivscalef
### frameWH, bgparami
Assign(pix0, v9)
Assign(pix1, v11)
#
# 画面からのはみ出し量の計算
# pix0[-|-| ScXL-fX | ScXH-fW |-|-| ScYL-fY | ScYH-fH ]
# pix1[-|-| fX+fW-ScXH |-|-|-| fY+fH-ScYH |-]
#
vsub pix0, scissor, bgparam # [2|6]
vsub pix1, bgparam, scissor[3h] # [2|6]
vmadn pix1, vone, frameWH[3h] # [2|6]
#
# 画面内ならはみ出し量 = 0 とする
#
vge pix0, pix0, _0x0000
vge pix1, pix1, _0x0000
EndAssign(scissor, v2)
### imageFlip, tptr
### bgparam, pix0, pix1
### vscale, vscalei, vscalef, ivscalei, ivscalef
### frameWH, bgparami
Assign(frameXY0, v2)
#
# フレームのはみ出し分をカットする
#
vsub frameWH, frameWH, pix0[2h] # [3|7]
vsub frameWH, frameWH, pix1[2h] # [3|7]
vadd frameXY0, bgparam, pix0[2h] # [2|6]
#
# はみ出し分の処理の結果, 描画範囲が残っていないなら終了
#
vge vtmp, frameWH, _0x0001 # [3|7]
ctc2 sys0, $vcc
andi sys0, sys0, 0x88
bne sys0, zero, GfxDone
#
# フレームの計算
# frameX0, frameX1, framePtrY0, frameRemain
#
Assign(frameXY1, v12)
vadd frameXY1, frameXY0, frameWH[3h] # [2|6]
vmov frameXY0[7], frameWH[7]
vmudm vtmp, frameXY0, _0x4000
ssv frameXY0[4], oRSPBG_TMP_frameX0(tptr)
ssv frameXY1[4], oRSPBG_TMP_frameX1(tptr)
beq imageFlip, zero, bg1cyc_skip2
slv vtmp[12], oRSPBG_TMP_framePtrY0(tptr)
EndAssign(frameXY0, v2)
EndAssign(frameXY1, v12)
#
# X-Flip なら pix0X <- pix1X
#
vmov pix0[2], pix1[2]
EndAssign(pix1, v11)
bg1cyc_skip2:
### imageFlip, tptr
### bgparam, pix0
### vscale, vscalei, vscalef, ivscalei, ivscalef
### frameWH, bgparami
Assign(imageSrcWH, v2)
#
# イメージの桁あわせ
# imageSrcW = bg->s.imageW << 3; /* (u11.5) */
# imageSrcH = bg->s.imageH << 3; /* (u11.5) */
#
vmudn imageSrcWH, bgparam, _0x0008 # [1|5]
#
# イメージの位置 imageX0,Y0 取得
#
Assign(imageXY0, v11)
Assign(imageXY0f, v12)
vmudn imageXY0f, vscale, pix0[2h]
vmadh imageXY0, vconst, _0x0000
vmudn imageXY0f, imageXY0f, _0x0200
vmadh imageXY0, imageXY0, _0x0200 # [0|4]
vmadh imageXY0, vone, bgparam[0h] # [0|4]
EndAssign(imageXY0f, v12)
EndAssign(pix0, v9)
### imageFlip, tptr
### bgparam
### vscale, vscalei, vscalef, ivscalei, ivscalef
### frameWH, bgparami.imageSrcWH, imageXY0
#
# 描画領域の左端がイメージソースの右端を超えた場合はループさせ 1 段下へ
#
Assign(imageX0, 3)
Assign(imageY0, 4)
Assign(imageSrcW, 5)
Assign(imageSrcH, 6)
Assign(imageYorig, 7)
mfc2 imageX0, imageXY0[0]
mfc2 imageSrcW, imageSrcWH[2]
mfc2 imageY0, imageXY0[8]
lw imageYorig, RSP_INPUT_BG+RSP_SBG_IMAGEYORIG(zero)
mfc2 imageSrcH, imageSrcWH[10]
bg1cyc_loop1:
sub sys0, imageX0, imageSrcW
bltz sys0, bg1cyc_loop2
mtc2 imageX0, imageXY0[0]
sub imageX0, imageX0, imageSrcW
addi imageY0, imageY0, 32
j bg1cyc_loop1
addi imageYorig, imageYorig, 32
bg1cyc_loop2:
sub sys0, imageY0, imageSrcH
bltz sys0, bg1cyc_loop2end
mtc2 imageY0, imageXY0[8]
sub imageY0, imageY0, imageSrcH
j bg1cyc_loop2
sub imageYorig, imageYorig, imageSrcH
bg1cyc_loop2end:
sw imageYorig, RSPBG_TMP_imageYorig(zero)
sub sys0, imageY0, imageYorig
sll sys0, sys0, 5
sw sys0, RSPBG_TMP_imageLYoffset(zero)
EndAssign(imageY0, 4)
EndAssign(imageSrcH, 6)
EndAssign(imageYorig, 7)
#
# イメージ範囲の取得
# flagBilerp を取得し,imageSliceW の計算を行なう
# imageSliceW = (imageW = frameW * scaleW >> 7) + flagBilerp * 32
#
Assign(imageW, v9)
Assign(imageWf, v12)
vmudn imageWf, vscale, frameWH[3h] # [0|4]
vmadh imageW, vconst, _0x0000
vmudn imageWf, imageWf, _0x0200 # [0|4]
vmadh imageW, imageW, _0x0200
EndAssign(imageWf, v12)
EndAssign(frameWH, v13)
Assign(imageSliceW, 4)
Assign(flagBilerp, 6)
lbu sys0, RSPOBJ_RENDERMODE(zero)
andi sys0, sys0, 0x08 # G_OBJRM_BILERP
srl flagBilerp, sys0, 3 # Bilerp なら 1
mfc2 imageSliceW, imageW[0]
sb flagBilerp, RSPBG_TMP_flagBilerp(zero)
sll sys0, flagBilerp, 5 # Bilerp なら 32
addi imageSliceW, imageSliceW, sys0
#
# 接続処理の判定 flagSplit == 0 なら接続処理
# flagSplit = (imageX0 + imageSliceW >= imageSrcW)
#
add sys1, imageX0, imageSliceW
slt sys1, sys1, imageSrcW
xori sys1, sys1, 1
sb sys1, RSPBG_TMP_flagSplit(zero)
EndAssign(imageSliceW, 4)
EndAssign(imageX0, 3)
EndAssign(imageSrcW, 5)
### imageFlip, tptr
### bgparam
### vscale, vscalei, vscalef, ivscalei, ivscalef
### imageW, bgparami.imageSrcWH, imageXY0
#
# TMEM へのロード用パラメータ取得
# tmemParam[tmemMask|tmemShift|tmemSize]
#
Assign(tmemParam, v12)
lbu sys0, RSP_INPUT_BG+RSP_BG_IMAGEFMT(zero)
lbu sys1, RSP_INPUT_BG+RSP_BG_IMAGESIZ(zero)
sll sys0, sys0, 1
addi sys0, sys0, RSPSBG_TMEMSIZE_TBL
sll sys1, sys1, 2
addi sys1, sys1, RSPSBG_TMEMPARAM
lsv tmemParam[4], 0(sys0)
llv tmemParam[0], 0(sys1)
#
Assign(flagBilerpv, v13)
Assign(imageSliceWmaxL, v14)
Assign(imageSliceWmaxH, v15)
mtc2 flagBilerp, flagBilerpv[0]
vmudn imageSliceWmaxL, vscale, bgparam[3] # [0]
vmadh imageSliceWmaxH, vconst, _0x0000 # [0]
EndAssign(flagBilerp, 6)
EndAssign(bgparam, v3)
Assign(tmemSliceWmax, v3)
vmudn vtmp, flagBilerpv, _0x0020
vmadl vtmp, imageSliceWmaxL, _0x0200
vmadm imageSliceWmaxH, imageSliceWmaxH, _0x0200
vmadn imageSliceWmaxL, vconst, _0x0000
vsubc vtmp, imageSliceWmaxL, imageSrcWH[1]
vlt vtmp, imageSliceWmaxH, _0x0000
vmrg vtmp, imageSliceWmaxL, imageSrcWH[1]
vmadn tmemSliceWmax, vone, tmemParam[0] # tmemMask 加算 [0]
vmudh vtmp, vone, _0x0001
vmadm tmemSliceWmax, tmemSliceWmax, tmemParam[1]
ssv tmemSliceWmax[0], oRSPBG_TMP_tmemSliceWmax(tptr)
EndAssign(imageSliceWmaxL, v14)
EndAssign(imageSliceWmaxH, v15)
### imageFlip, tptr
### tmemParam, tmemSliceWmax, flagBilerpv
### vscale, vscalei, vscalef, ivscalei, ivscalef
### imageW, bgparami.imageSrcWH, imageXY0
Assign(itmemSliceWmaxi, v14)
Assign(itmemSliceWmaxf, v15)
Assign(imageSliceLinesv, v16)
vrcp itmemSliceWmaxf[0], tmemSliceWmax[0]
vrcph itmemSliceWmaxi[0], _0x0000
vmudh vtmp, flagBilerpv, _0xffff # [0]
vmadl vtmp, itmemSliceWmaxf, tmemParam[2]
vmadm imageSliceLinesv, itmemSliceWmaxi, tmemParam[2]
EndAssign(flagBilerpv, v13)
EndAssign(tmemSliceWmax, v3)
EndAssign(itmemSliceWmaxi, v14)
EndAssign(itmemSliceWmaxf, v15)
### imageFlip, tptr
### tmemParam, imageSliceLinesv
### vscale, vscalei, vscalef, ivscalei, ivscalef
### imageW, bgparami.imageSrcWH, imageXY0
Assign(frameSliceLinesH, v3)
Assign(frameSliceLinesL, v13)
vmudn frameSliceLinesL, imageSliceLinesv, _0x0400 # [0]
vmadh frameSliceLinesH, vconst, _0x0000 # [0]
vmudl vtmp, frameSliceLinesL, ivscalef[4]
vmadm vtmp, frameSliceLinesH, ivscalef[4]
vmadn frameSliceLinesL, frameSliceLinesL, ivscalei[4]
vmadh frameSliceLinesH, frameSliceLinesH, ivscalei[4] # [0]
ssv frameSliceLinesH[0], oRSPBG_TMP_frameSliceLines+0(tptr)
ssv frameSliceLinesL[0], oRSPBG_TMP_frameSliceLines+2(tptr)
#
# image Y 座標のオフセット値をフレームラインへ整列させる
# imageLYoffset = ((s32)imageY0 - imageYorig) << 5;
# if (imageLYoffset < 0) imageLYoffset -= (scaleH - 1);
# frameLYoffset = imageLYoffset / scaleH;
# frameLYoffset <<= 10;
#
Assign(frameLYoffsetL, v14)
Assign(frameLYoffsetH, v15)
lsv frameLYoffsetL[0], oRSPBG_TMP_imageLYoffset+2(tptr)
lsv frameLYoffsetH[0], oRSPBG_TMP_imageLYoffset+0(tptr)
vmudl vtmp, frameLYoffsetL, ivscalef[4]
vmadm vtmp, frameLYoffsetH, ivscalef[4]
vmadn frameLYoffsetL, frameLYoffsetL, ivscalei[4]
vmadh frameLYoffsetH, frameLYoffsetH, ivscalei[4] # [0]
vand frameLYoffsetL, frameLYoffsetL, _0xfc00
EndAssign(ivscalef, v8)
EndAssign(ivscalei, v7)
#
# image Y に対応するスライス番号の取得
# imageNumSlice = framLYoffset / frameSliceLines;
#
Assign(imageNumSliceL, v17)
Assign(imageNumSlice, v18)
Assign(iframeSliceLinesL, v7)
Assign(iframeSliceLinesH, v8)
vrcph vtmp[0], frameSliceLinesH[0]
vrcpl iframeSliceLinesL[0], frameSliceLinesL[0]
vrcph iframeSliceLinesH[0], _0x0000
vmudl vtmp, frameLYoffsetL, iframeSliceLinesL # [0]
vmadm vtmp, frameLYoffsetH, iframeSliceLinesL
vmadn imageNumSliceL, frameLYoffsetL, iframeSliceLinesH
vmadh imageNumSlice, frameLYoffsetH, iframeSliceLinesH
vmudn imageNumSliceL, imageNumSliceL, _0x0002
vmadh imageNumSlice, imageNumSlice, _0x0002 # [0]
#
# imageNumSlice+1 の取得
#
vmadh imageNumSliceL, vone, _0x0001
EndAssign(iframeSliceLinesL, v7)
EndAssign(iframeSliceLinesH, v8)
#
# imageNumSlice の誤差修正
#
Assign(frameLYoffsetL1, v7)
Assign(frameLYoffsetH1, v8)
vmudn frameLYoffsetL1, frameSliceLinesL, imageNumSliceL
vmadh frameLYoffsetH1, frameSliceLinesH, imageNumSliceL
vsubc vtmp, frameLYoffsetL, frameLYoffsetL1
vge vtmp, frameLYoffsetH, frameLYoffsetH1
vmrg imageNumSlice, imageNumSliceL, imageNumSlice
EndAssign(frameLYoffsetL1, v7)
EndAssign(frameLYoffsetH1, v8)
EndAssign(imageNumSliceL, v17)
### imageFlip, tptr
### tmemParam, imageSliceLinesv
### vscale, vscalei, vscalef
### imageW, bgparami.imageSrcWH, imageXY0
### frameSliceLinesH, frameSliceLinesL
### frameLYoffsetL, frameLYoffsetH
### imageNumSlice
#
# 描画開始スライスがフレーム上部にどれだけ隠れているかを計算
#
Assign(frameLSliceL0L, v7)
Assign(frameLSliceL0H, v8)
#
# frameLSliceL0 = frameSliceLines * imageNumSlice
#
vmudn frameLSliceL0L, frameSliceLinesL, imageNumSlice[0] # [0]
vmadh frameLSliceL0H, frameSliceLinesH, imageNumSlice[0]
Assign(frameLYsliceL, v17)
#
# frameLYslice = frameLSliceL0 & ~1023
#
vand frameLYsliceL, frameLSliceL0L, _0xfc00 # [0]
Assign(frameLHiddenL, v19)
Assign(frameLHiddenH, v20)
#
# frameLHidden = frameLYoffset - frameLYslice
#
vsubc frameLHiddenL, frameLYoffsetL, frameLYsliceL
vsub frameLHiddenH, frameLYoffsetH, frameLSliceL0H
EndAssign(frameLYoffsetL, v14)
EndAssign(frameLYoffsetH, v15)
EndAssign(frameLYsliceL, v17)
Assign(imageLHiddenL, v14)
Assign(imageLHiddenH, v15)
#
# imageLHidden = (frameLHidden >> 10) * scaleH
#
vmudl vtmp, frameLHiddenL, _0x0040
vmadm imageLHiddenH, frameLHiddenH, _0x0040
vmadn imageLHiddenL, vconst, _0x0000 # [0]
vmudn imageLHiddenL, imageLHiddenL, vscale[4]
vmadh imageLHiddenH, imageLHiddenH, vscale[4] # [0]
### imageFlip, tptr
### tmemParam, imageSliceLinesv
### vscale, vscalei, vscalef
### imageW, bgparami.imageSrcWH, imageXY0
### frameSliceLinesH, frameSliceLinesL
### imageNumSlice
### frameLSliceL0L, frameLSliceL0H
### frameLHiddenL, frameLHiddenH
### imageLHiddenL, imageLHiddenH
#
# 描画開始スライスのフレームサイズの計算
# frameLSliceL0 =
# (frameLSliceL0 & 1023) + frameSliceLines - frameLHidden;
#
vmudh vtmp, frameSliceLinesH, _0x0001
vand vtmp, frameLSliceL0L, _0x03ff
vmadn vtmp, frameSliceLinesL, _0x0001
vmadn frameLSliceL0L, frameLHiddenL, _0xffff
vmadh frameLSliceL0H, frameLHiddenH, _0xffff
ssv frameLSliceL0H[0], oRSPBG_TMP_frameLSliceL0+0(tptr)
ssv frameLSliceL0L[0], oRSPBG_TMP_frameLSliceL0+2(tptr)
EndAssign(frameLSliceL0L, v7)
EndAssign(frameLSliceL0H, v8)
EndAssign(frameSliceLinesL, v13)
EndAssign(frameSliceLinesH, v3)
EndAssign(frameLHiddenL, v19)
EndAssign(frameLHiddenH, v20)
### imageFlip, tptr
### tmemParam, imageSliceLinesv
### vscale, vscalei, vscalef
### imageW, bgparami.imageSrcWH, imageXY0
### imageNumSlice
### imageLHiddenL, imageLHiddenH
#
# スライスを途中から描画するためのイメージパラメータの計算
#
Assign(imageT, v3)
#
# imageT = (imageLHidden >> 5) & 31
#
vmudm imageT, imageLHiddenL, _0x0800
vand imageT, imageT, _0x001f
#
# imageLHidden >>= 10
#
vmudl imageLHiddenL, imageLHiddenL, _0x0040
vmadm imageLHiddenH, imageLHiddenH, _0x0040
vmadn imageLHiddenL, vconst, _0x0000 # [0]
#
# imageISliceL0 = imageSliceLines - imageLHidden
#
Assign(imageISliceL0v, v7)
vsub imageISliceL0v, imageSliceLinesv, imageLHiddenL[0] # [0]
vmov imageISliceL0v[1], imageSliceLinesv[0]
j bg1cyc_main
slv imageISliceL0v[0], oRSPBG_TMP_imageISliceL0(tptr)
#
# bg1cyc_main へ Jump する
#
#----------------------------------------------------------------------------
# TMEM へのロード A,B
#----------------------------------------------------------------------------
FixedAssign(TimagePtr, 17)
FixedAssign(TloadLines, 18)
FixedAssign(TtmemSH, 19)
FixedAssign(TtmemAdrs, 20)
tmemLoad_A:
lw sys0, RSPBG_TMP_rdpSetTile_w0(zero)
sbv _TILESYNC, 0(outp)
addi outp, outp, 16
or sys0, sys0, TtmemAdrs
sw sys0, 8-16(outp)
slv _TX_LOADTILE, 12-16(outp)
tmemLoad_B:
lw sys0, RSPBG_TMP_rdpSetTimg_w0(zero)
sw TimagePtr, 4(outp)
addi outp, outp, 24
sw sys0, 0-24(outp)
sbv _LOADSYNC, 8-24(outp)
lui sys0, 0xf400
sw sys0, 16-24(outp)
addi sys0, TtmemSH, 0x0700-1
sh sys0, 20-24(outp)
sll sys0, TloadLines, 2
addi sys0, sys0, -1
jr return
sh sys0, 22-24(outp)
#----------------------------------------------------------------------------
# テクスチャのロード
# imagePtr
# imageRemain
# imageSliceH を入力とする
#----------------------------------------------------------------------------
Assign(imageRemain, 3)
Assign(imageSliceH, 4)
Assign(imagePtr, 5)
Assign(imageSliceSize, 6)
FixedAssign(loadParam, v24)
FixedAssign(vtmp2, v25)
FixedAssign(vtmp3, v26)
#define loadLines gfx0
#define iLoadable gfx1
bg1cyc_tmemLoad:
lbu sys0, RSPBG_TMP_flagBilerp(zero)
lbu sys1, RSPBG_TMP_flagSplit(zero) # bg1cyc_tmemLoad_C2 まで保存
add loadLines, imageSliceH, sys0
sub iLoadable, imageRemain, sys1
sub sys0, iLoadable, loadLines
bltz sys0, bg1cyc_tmemLoad_Connect
lhu TtmemSH, RSPBG_TMP_tmemSliceWmax(zero) # in Delay
#
# 通常のロード処理
#
_mov (TloadLines, loadLines)
jal tmemLoad_B
_mov (TimagePtr, imagePtr)
sub imageRemain, imageRemain, imageSliceH
j bg1cyc_tmemLoad_return
add imagePtr, imagePtr, imageSliceSize
bg1cyc_tmemLoad_Connect:
#
# 下端境界をまたぐ場合
#
# SubSliceY2 = *imageRemain;
# SubSliceL2 = loadLines - SubSliceY2;
#
#define SubSliceY2 TtmemAdrs
#define SubSliceL2 TloadLines
#define imagePtr2 TimagePtr
mtc2 TtmemSH, loadParam[0] # [0|1]=[tmemSliceWmaxv|imageSrcWsize]
sub SubSliceL2, loadLines, imageRemain
blez SubSliceL2, bg1cyc_tmemLoad_C2
addi SubSliceY2, imageRemain, 0
# if (SubSliceL2 > 0)
# {
#
# imagePtr2 = imageTop + imagePtrX0
#
lw imagePtr2, RSP_INPUT_BG+RSP_BG_IMAGEPTR(zero)
lhu sys0, RSPBG_TMP_imagePtrX0(zero)
andi return, SubSliceY2, 1
beq return, zero, bg1cyc_tmemLoad_C1
add imagePtr2, imagePtr2, sys0
#
# if (SubSliceY2 & 1)
# {
#
# imagePtr2 -= imageSrcWsize
# SubSliceY2 --
# SubSliceL2 ++
#
lhu sys0, RSPBG_TMP_imageSrcWsize(zero)
addi SubSliceY2, SubSliceY2, -1
addi SubSliceL2, SubSliceL2, 1
sub imagePtr2, imagePtr2, sys0
# }
bg1cyc_tmemLoad_C1:
#
# tmemLoad_A(pkt, imagePtr2,
# SubSliceL2, SubSliceY2 * tmemSliceWmax, tmemSliceWmax);
#
mtc2 SubSliceY2, vtmp[0]
vmudn vtmp, vtmp, loadParam[0]
jal tmemLoad_A
mfc2 TtmemAdrs, vtmp[0]
#}
bg1cyc_tmemLoad_C2:
#undef SubSliceY2
#undef SubSliceL2
#undef imagePtr2
#
# ここまで sys1 を保存しておく
#
beq sys1, zero, bg1cyc_tmemLoad_C3
lsv loadParam[2], oRSPBG_TMP_imageSrcWsize(tptr)
#
# if (flagSplit)
# {
#
#define imagePtr1A sys1
#define imagePtr1B TimagePtr
#define SubSliceL1 TloadLines
#
# imagePtr1A = (*imagePtr) + iLoadable * imageSrcWsize
# imagePtr1B = imageTop
# SubSliceY1 = iLoadable
#
mtc2 iLoadable, vtmp3[2]
vmudn vtmp, vtmp3, loadParam[1]
vmadh vtmp2, vconst, _0x0000
ssv vtmp [2], oRSPOBJ_VSCRATCH+2(vecptr)
ssv vtmp2[2], oRSPOBJ_VSCRATCH+0(vecptr)
lw sys0, oRSPOBJ_VSCRATCH+0(vecptr)
lw imagePtr1B, RSP_INPUT_BG+RSP_BG_IMAGEPTR(zero)
andi SubSliceL1, iLoadable, 1
beq SubSliceL1, zero, bg1cyc_tmemLoad_C4
add imagePtr1A, imagePtr, sys0
# if (SubSliceL1 = iLoadable & 1)
# {
#
# imagePtr1A -= imageSrcWsize
# imagePtr1B -= imageSrcWsize
# SubSliceY1 -- /* as vtmp3[1] */
#
lhu sys0, RSPBG_TMP_imageSrcWsize(zero)
vsub vtmp3, vtmp3, _0x0001
sub imagePtr1A, imagePtr1A, sys0
sub imagePtr1B, imagePtr1B, sys0
# }
bg1cyc_tmemLoad_C4:
#
# SubSliceL1 ++
# tmemSH_A = (imageSrcWsize - imagePtrX0) >> 3
# tmemSH_B = tmemSliceWmax - tmemSH_A
#
lsv loadParam[4], oRSPBG_TMP_imagePtrX0(tptr)
addi SubSliceL1, SubSliceL1, 1
vsub vtmp, loadParam, loadParam[2] # [1]
vmudm vtmp, vtmp, _0x2000 # tmemSH_A
vsub vtmp2, loadParam, vtmp[1] # [0]
mfc2 TtmemSH, vtmp2[0] # tmemSH_B
#
vmudn vtmp2, vtmp3, loadParam[0] # [1]
vmadn vtmp3, vtmp, _0x0001 # [1]
jal tmemLoad_A
mfc2 TtmemAdrs, vtmp3[2]
_mov (TimagePtr, imagePtr1A)
mfc2 TtmemAdrs, vtmp2[2]
jal tmemLoad_A
mfc2 TtmemSH, vtmp[2]
#}
#undef imagePtr1A
#undef imagePtr1B
#undef SubSliceL1
bg1cyc_tmemLoad_C3:
bgtz iLoadable, bg1cyc_tmemLoad_C5
sub imageRemain, imageRemain, imageSliceH
#
# [SetTile]
#{
lw sys0, RSPBG_TMP_rdpSetTile_w0(zero)
addi outp, outp, 8
sw sys0, 0-8(outp)
j bg1cyc_tmemLoad_C6
slv _TX_LOADTILE, 4-8(outp)
#}
bg1cyc_tmemLoad_C5:
#
# tmemLoad_A(pkt, *imagePtr, iLoadable, 0, tmemSliceWmax)
#{
_mov (TimagePtr, imagePtr)
lhu TtmemSH, RSPBG_TMP_tmemSliceWmax(zero)
_mov (TloadLines, iLoadable)
jal tmemLoad_A
_li (TtmemAdrs, 0)
#}
bg1cyc_tmemLoad_C6:
bgtz imageRemain, bg1cyc_tmemLoad_return
#{
add imagePtr, imagePtr, imageSliceSize
#} else {
#
# imagePtr = imageTop - imageRemain * imageSrcWsize + imagePtrX0
# imageRemain = tmemSrcLines + imageRemain
#
sub sys0, zero, imageRemain
mtc2 sys0, vtmp[0]
lhu sys0, RSPBG_TMP_imagePtrX0(zero)
lw imagePtr, RSP_INPUT_BG+RSP_BG_IMAGEPTR(zero)
vmudn vtmp, vtmp, loadParam[1]
vmadh vtmp2, vconst, _0x0000
add imagePtr, imagePtr, sys0
ssv vtmp[0], oRSPOBJ_VSCRATCH+2(vecptr)
lhu sys1, RSPBG_TMP_tmemSrcLines(zero)
ssv vtmp2[0], oRSPOBJ_VSCRATCH+0(vecptr)
lw sys0, oRSPOBJ_VSCRATCH+0(vecptr)
add imageRemain, imageRemain, sys1
j bg1cyc_tmemLoad_return
add imagePtr, imagePtr, sys0
#}
#}
EndAssign(TimagePtr, 17)
EndAssign(TloadLines, 18)
EndAssign(TtmemSH, 19)
EndAssign(TtmemAdrs, 20)
EndAssign(loadParam, v24)
EndAssign(vtmp2, v25)
EndAssign(vtmp3, v26)
#undef loadLines
#undef iLoadable
#!Reserved (17,18,19,20,v24,v25,v26)
#else
#undef BG1CYCL_LIST
#----------------------------------------------------------------------------
# 後半パート
#----------------------------------------------------------------------------
bg1cyc_main:
#
# imageIY0 = imageSliceLines * imageNumSlice
# + (imageYorig & ~31) / 32 + imageLHidden;
#
Assign(imageIY0v, v8)
Assign(imageYorigL, v13)
Assign(imageYorigH, v17)
lsv imageYorigL[0], oRSPBG_TMP_imageYorig+2(tptr)
lsv imageYorigH[0], oRSPBG_TMP_imageYorig+0(tptr)
vmudn vtmp, imageSliceLinesv, imageNumSlice
vmadn vtmp, imageLHiddenL, _0x0001
vmadh vtmp, imageLHiddenH, _0x0001
vmadm vtmp, imageYorigH, _0x0800
vmadl imageIY0v, imageYorigL, _0x0800 # [0]
EndAssign(imageNumSlice, v18)
EndAssign(imageYorigL, v13)
EndAssign(imageYorigH, v17)
EndAssign(imageLHiddenL, v14)
EndAssign(imageLHiddenH, v15)
EndAssign(imageSliceLinesv, v16)
#
# if (imageIY0 < 0) imageIY0 += (bg->s.imageH>>2)
# if (imageIY0 >= (bg->s.imageH >> 2)) imageIY0 -= (bg->s.imageH>>2)
#
Assign(subparam, v13)
Assign(addparam, v14)
vsub subparam, imageIY0v, bgparami[5]
vadd addparam, imageIY0v, bgparami[5]
vge vtmp, imageIY0v, _0x0000
vmrg imageIY0v, imageIY0v, addparam
vge vtmp, subparam, _0x0000
vmrg imageIY0v, subparam, imageIY0v
EndAssign(bgparami, v10)
EndAssign(subparam, v13)
EndAssign(addparam, v14)
### imageFlip, tptr
### tmemParam, imageT, imageISliceL0v
### vscale, vscalei, vscalef
### imageW, imageSrcWH, imageXY0
### imageIY0v
Assign(imageParam, v10)
#
# imageSrcWsize = (imageSrcW / tmemShift) << 3
# imagePtrX0 = (imageX0 / tmemShift) << 3
#
vmov imageXY0[1], imageSrcWH[1]
vmudm imageParam, imageXY0, tmemParam[1]
vmudn imageParam, imageParam, _0x0008
slv imageParam[0], oRSPBG_TMP_imagePtrX0(tptr)
ssv imageIY0v[0], oRSPBG_TMP_imageIY0(tptr)
EndAssign(imageSrcWH, v2)
Assign(imagePtrL, v2)
Assign(imagePtrH, v13)
#
# imagePtr のアドレス変換
# imagePtr = imageTop + imageSrcWsize * imageIY0 + imagePtrX0;
#
lw gfx1, RSP_INPUT_BG+RSP_BG_IMAGEPTR(zero)
vmudn vtmp, imageParam, _0x0001
jal AdrsFixup
vmadn imagePtrL, imageIY0v, imageParam[1] # [0]
#ifdef UCODE_S2DEX2
sw gfx1, RSP_INPUT_BG+RSP_BG_IMAGEPTR(zero)
#else
sw $19, RSP_INPUT_BG+RSP_BG_IMAGEPTR(zero)
#endif
vmadh imagePtrH, vconst, _0x0000
ssv imagePtrL[0], oRSPOBJ_VSCRATCH+2(vecptr)
ssv imagePtrH[0], oRSPOBJ_VSCRATCH+0(vecptr)
lw imagePtr, oRSPOBJ_VSCRATCH+0(vecptr)
#ifdef UCODE_S2DEX2
add imagePtr, imagePtr, gfx1
#else
add imagePtr, imagePtr, $19
#endif
EndAssign(imageIY0v, v8)
EndAssign(imagePtrL, v2)
EndAssign(imagePtrH, v13)
Assign(imageSliceSizeL, v2)
Assign(imageSliceSizeH, v8)
#
# imageSliceSize = imageSrcWsize * imageSliceH
#
vmudm imageSliceSizeH, imageISliceL0v, imageParam[1] # [0]
vmadn imageSliceSizeL, vconst, _0x0000
ssv imageSliceSizeH[0], oRSPBG_TMP_imageSliceSize0+0(tptr)
ssv imageSliceSizeH[2], oRSPBG_TMP_imageSliceSize+0(tptr)
ssv imageSliceSizeL[0], oRSPBG_TMP_imageSliceSize0+2(tptr)
ssv imageSliceSizeL[2], oRSPBG_TMP_imageSliceSize+2(tptr)
EndAssign(imageSliceSizeL, v2)
EndAssign(imageSliceSizeH, v8)
EndAssign(imageParam, v10)
EndAssign(imageISliceL0v, v7)
Assign(imageS, v2)
beq imageFlip, zero, bg1cyc_skip3
vand imageS, imageXY0, tmemParam[0] # [0]
vmudn vtmp, imageS, _0xffff
vmadn imageS, imageW, _0xffff # [0]
bg1cyc_skip3:
EndAssign(imageFlip, 2)
EndAssign(imageXY0, v11)
EndAssign(imageW, v9)
EndAssign(tmemParam, v12)
#
# RDP コマンドの定数値の作成
#
Assign(rdpSetTimg_w0, 2)
Assign(rdpSetTile_w0, 7)
lhu sys0, RSPBG_TMP_imageSrcWsize(zero)
lhu sys1, RSPBG_TMP_tmemSliceWmax(zero)
lui rdpSetTimg_w0, 0xfd10
srl sys0, sys0, 1
addi sys0, sys0, -1
or rdpSetTimg_w0, rdpSetTimg_w0, sys0
sw rdpSetTimg_w0, RSPBG_TMP_rdpSetTimg_w0(zero)
lui rdpSetTile_w0, 0xf510
sll sys1, sys1, 9
or rdpSetTile_w0, rdpSetTile_w0, sys1
sw rdpSetTile_w0, RSPBG_TMP_rdpSetTile_w0(zero)
# [SetTile:7]
sw rdpSetTile_w0, 0(outp)
slv _TX_LOADTILE, 4(outp)
# [SetTile:0]
sw rdpSetTile_w0, 8(outp)
lbu sys0, RSP_INPUT_BG+RSP_BG_IMAGEFMT(zero)
lbu sys1, RSP_INPUT_BG+RSP_BG_IMAGESIZ(zero)
sll sys0, sys0, 5
sll sys1, sys1, 3
or sys0, sys0, sys1
sb sys0, 9(outp)
lbu sys0, RSP_INPUT_BG+RSP_BG_IMAGEPAL(zero)
lw sys1, RSPOBJ_SETTILE_MIRROR(zero)
sll sys0, sys0, 20
or sys0, sys0, sys1
sw sys0, 12(outp)
# [SetTileSize:7]
slv _SETTILESIZE, 16(outp) # CMD.0=0x32000000
sw zero, 20(outp) # CMD.1=0x00000000
addi outp, outp, 24
EndAssign(rdpSetTimg_w0, 2)
EndAssign(rdpSetTile_w0, 7)
### tptr, imagePtr, imageSliceH, imageRemain
### imageS, imageT
### vscale, vscalei, vscalef
#
# imageRemain = (imageH >> 2) - imageIY0
# imageSliceH = imageISliceL0;
# frameSliceCount = frameLSliceL0;
#
Assign(frameSliceCount, 2)
Assign(frameX0, 7)
Assign(frameX1, 8)
Assign(framePtrY0, 9)
Assign(framePtrY1, 10)
Assign(frameSliceH, 13)
Assign(frameRemain, 14)
Assign(frameSliceLines, 15)
lhu imageRemain, RSP_INPUT_BG+RSP_BG_IMAGEH(zero)
lhu sys0, RSPBG_TMP_imageIY0(zero)
lh imageSliceH, RSPBG_TMP_imageISliceL0(zero)
lw frameSliceCount, RSPBG_TMP_frameLSliceL0(zero)
lw frameSliceLines, RSPBG_TMP_frameSliceLines(zero)
lhu frameRemain, RSPBG_TMP_frameRemain(zero)
srl imageRemain, imageRemain, 2
sh imageRemain, RSPBG_TMP_tmemSrcLines(zero)
sub imageRemain, imageRemain, sys0
lw imageSliceSize, RSPBG_TMP_imageSliceSize0(zero)
lhu frameX0, RSPBG_TMP_frameX0(zero)
lhu frameX1, RSPBG_TMP_frameX1(zero)
lhu framePtrY0, RSPBG_TMP_framePtrY0(zero)
sll frameX0, frameX0, 12
sll frameX1, frameX1, 12
#
# ループ
#
Assign(imagePvL, v7)
Assign(imagePvH, v8)
bg1cyc_mainloop:
#
# 描画ライン数の計算をし, 描画を行なうかどうか判定する
#
srl frameSliceH, frameSliceCount, 10
bgtz frameSliceH, bg1cyc_mainloop_1
nop
#
# if (frameSliceH <= 0)
# {
# 描画をしない場合
# imageRemain -= imageSliceH
# if (imageRemain > 0){
#
sub imageRemain, imageRemain, imageSliceH
bgtz imageRemain, bg1cyc_mainloop_2
# {
# imagePtr += imageSrcWsize * imageSliceH
#
add imagePtr, imagePtr, imageSliceSize
#
# } else {
# imagePtr = imageTop
# - (imageRemain * imageSrcWsize) + imagePtrX0
# imageRemain += tmemSrcLines
#
lsv imagePvL[0], oRSPBG_TMP_imageSrcWsize(tptr)
sub sys0, zero, imageRemain
mtc2 sys0, imagePvL[2]
lw imagePtr, RSP_INPUT_BG+RSP_BG_IMAGEPTR(zero)
vmudn imagePvL, imagePvL, imagePvL[1]
vmadh imagePvH, vconst, _0x0000
ssv imagePvL[0], oRSPOBJ_VSCRATCH+2(vecptr)
ssv imagePvH[0], oRSPOBJ_VSCRATCH+0(vecptr)
lw sys0, oRSPOBJ_VSCRATCH+0(vecptr)
lhu sys1, RSPBG_TMP_imagePtrX0(zero)
lhu return, RSPBG_TMP_tmemSrcLines(zero)
add imagePtr, imagePtr, sys0
add imagePtr, imagePtr, sys1
j bg1cyc_mainloop_2
add imageRemain, imageRemain, return
# }
# } else {
bg1cyc_mainloop_1:
# 描画をする場合
#
# frameSliceCount &= 1023
# if ((frameRemain -= frameSliceH) < 0)
# {
#
sub frameRemain, frameRemain, frameSliceH
bgez frameRemain, bg1cyc_mainloop_3
andi frameSliceCount, frameSliceCount, 1023
#
# 最終スライスの処理
#
# imageSliceH += ((frameRemain * scaleH) >> 10) + 1
#
mtc2 frameRemain, vtmp[0]
vmudn imagePvL, vscale, vtmp[0] # [4]
vmadh imagePvH, vconst, _0x0000
lhu sys1, RSPBG_TMP_imageSliceLines(zero)
ssv imagePvH[8], oRSPOBJ_VSCRATCH+0(vecptr)
ssv imagePvL[8], oRSPOBJ_VSCRATCH+2(vecptr)
lw sys0, oRSPOBJ_VSCRATCH+0(vecptr)
addi imageSliceH, imageSliceH, 1
sra sys0, sys0, 10
add imageSliceH, imageSliceH, sys0
#
# frameSliceH += frameRemain
# if (imageSliceH > imageSliceLines)
# {
#
sub sys0, imageSliceH, sys1
bltz sys0, bg1cyc_mainloop_3
add frameSliceH, frameSliceH, frameRemain
# imageSliceH = imageSliceLines
addi imageSliceH, sys1, 0
# }
bg1cyc_mainloop_3:
EndAssign(imagePvL, v7)
EndAssign(imagePvH, v8)
#
# テクスチャロード
#
j bg1cyc_tmemLoad
#
# 描画フレーム範囲の取得
#
add framePtrY1, framePtrY0, frameSliceH
bg1cyc_tmemLoad_return:
#
# [PipeSync] 先行する LOADTILE 命令の終了を待つ
#
sbv _PIPESYNC, 0(outp)
#
# Rectangle 描画
#
sll sys0, framePtrY1, 2
or sys0, sys0, frameX1
sw sys0, 8(outp)
sbv _TXTRRECT, 8(outp)
sll sys0, framePtrY0, 2
or sys0, sys0, frameX0
sw sys0, 12(outp)
ssv imageS[0], 16(outp)
ssv imageT[0], 18(outp)
ssv vscale[0], 20(outp)
ssv vscale[8], 22(outp)
jal OutputClose
addiu outp, outp, 24
# フレームの未描画ライン数が無くなったら終わる
blez frameRemain, GfxDone
# 領域更新
addi framePtrY0, framePtrY1, 0
# }
bg1cyc_mainloop_2:
add frameSliceCount, frameSliceCount, frameSliceLines
lh imageSliceH, RSPBG_TMP_imageSliceLines(zero)
lw imageSliceSize, RSPBG_TMP_imageSliceSize(zero)
j bg1cyc_mainloop
vxor imageT, imageT, imageT
EndAssign(frameX0, 7)
EndAssign(frameX1, 8)
EndAssign(framePtrY0, 9)
EndAssign(framePtrY1, 10)
EndAssign(frameSliceH, 13)
EndAssign(frameRemain, 14)
EndAssign(frameSliceLines, 15)
EndAssign(frameSliceCount, 2)
EndAssign(vscale, v4)
EndAssign(vscalei, v5)
EndAssign(vscalef, v6)
EndAssign(imageS, v2)
EndAssign(imageT, v3)
EndAssign(imagePtr, 5)
EndAssign(imageSliceH, 4)
EndAssign(imageRemain, 3)
EndAssign(imageSliceSize, 6)
EndAssign(tptr, 1)
#endif
/*======== End of gs2bg1cycL.s ========*/