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# PSn00bSDK .SMD model parser library
# (C) 2019-2023 Lameguy64, spicyjpeg - MPL licensed
.set OT_ADDR, 0
.set OT_LEN, 4
.set OT_ZDIV, 8
.set OT_ZOFF, 10
.set SMD_HEAD_ID, 0
.set SMD_HEAD_FLAG, 4
.set SMD_HEAD_NVERTS, 6
.set SMD_HEAD_NNORMS, 8
.set SMD_HEAD_NPRIMS, 10
.set SMD_HEAD_PVERTS, 12
.set SMD_HEAD_PNORMS, 16
.set SMD_HEAD_PPRIMS, 20
.set SMD_HEAD_SIZE, 24
.set POLYF3_tag, 0
.set POLYF3_tpage, 4
.set POLYF3_rgbc, 8
.set POLYF3_xy0, 12
.set POLYF3_xy1, 16
.set POLYF3_xy2, 20
.set POLYF3_len, 24
.set POLYFT3_tag, 0
.set POLYFT3_rgbc, 4
.set POLYFT3_xy0, 8
.set POLYFT3_uv0, 12
.set POLYFT3_clut, 14
.set POLYFT3_xy1, 16
.set POLYFT3_uv1, 20
.set POLYFT3_tpage, 22
.set POLYFT3_xy2, 24
.set POLYFT3_uv2, 28
.set POLYFT3_pad, 30
.set POLYFT3_len, 32
.set POLYG3_tag, 0
.set POLYG3_tpage, 4
.set POLYG3_rgbc0, 8
.set POLYG3_xy0, 12
.set POLYG3_rgbc1, 16
.set POLYG3_xy1, 20
.set POLYG3_rgbc2, 24
.set POLYG3_xy2, 28
.set POLYG3_len, 32
.set POLYGT3_tag, 0
.set POLYGT3_rgbc0, 4
.set POLYGT3_xy0, 8
.set POLYGT3_uv0, 12
.set POLYGT3_clut, 14
.set POLYGT3_rgbc1, 16
.set POLYGT3_xy1, 20
.set POLYGT3_uv1, 24
.set POLYGT3_tpage, 26
.set POLYGT3_rgbc2, 28
.set POLYGT3_xy2, 32
.set POLYGT3_uv2, 36
.set POLYGT3_pad, 38
.set POLYGT3_len, 40
.set POLYF4_tag, 0
.set POLYF4_tpage, 4
.set POLYF4_rgbc, 8
.set POLYF4_xy0, 12
.set POLYF4_xy1, 16
.set POLYF4_xy2, 20
.set POLYF4_xy3, 24
.set POLYF4_len, 28
.set POLYFT4_tag, 0
.set POLYFT4_rgbc, 4
.set POLYFT4_xy0, 8
.set POLYFT4_uv0, 12
.set POLYFT4_clut, 14
.set POLYFT4_xy1, 16
.set POLYFT4_uv1, 20
.set POLYFT4_tpage, 22
.set POLYFT4_xy2, 24
.set POLYFT4_uv2, 28
.set POLYFT4_pad0, 30
.set POLYFT4_xy3, 32
.set POLYFT4_uv3, 36
.set POLYFT4_pad1, 38
.set POLYFT4_len, 40
.set POLYG4_tag, 0
.set POLYG4_tpage, 4
.set POLYG4_rgbc0, 8
.set POLYG4_xy0, 12
.set POLYG4_rgbc1, 16
.set POLYG4_xy1, 20
.set POLYG4_rgbc2, 24
.set POLYG4_xy2, 28
.set POLYG4_rgbc3, 32
.set POLYG4_xy3, 36
.set POLYG4_len, 40
.set POLYGT4_tag, 0
.set POLYGT4_rgbc0, 4
.set POLYGT4_xy0, 8
.set POLYGT4_uv0, 12
.set POLYGT4_clut, 14
.set POLYGT4_rgbc1, 16
.set POLYGT4_xy1, 20
.set POLYGT4_uv1, 24
.set POLYGT4_tpage, 26
.set POLYGT4_rgbc2, 28
.set POLYGT4_xy2, 32
.set POLYGT4_uv2, 36
.set POLYGT4_pad0, 38
.set POLYGT4_rgbc3, 40
.set POLYGT4_xy3, 44
.set POLYGT4_uv3, 48
.set POLYGT4_pad1, 50
.set POLYGT4_len, 52
.set CLIP_LEFT, 1
.set CLIP_RIGHT, 2
.set CLIP_TOP, 4
.set CLIP_BOTTOM, 8
# Clip routine macros, based on Cohen-Sutherland line clipping algorithm
# but only with the off-screen dectection logic extended for polygons
.macro ClipTestTri
# X0 clip test
mfc2 $t7, C2_SXY0
sll $v1, $t8, 16
sra $v1, 16
sll $v0, $t7, 16
sra $v0, 16
bge $v0, $v1, .no_clip_l_x0
move $s0, $0
ori $s0, CLIP_LEFT
.no_clip_l_x0:
sll $v1, $t9, 16
sra $v1, 16
ble $v0, $v1, .no_clip_r_x0
nop
ori $s0, CLIP_RIGHT
.no_clip_r_x0:
# Y0 clip test
sra $v0, $t7, 16
sra $v1, $t8, 16
bge $v0, $v1, .no_clip_t_y0
nop
ori $s0, CLIP_TOP
.no_clip_t_y0:
sra $v1, $t9, 16
ble $v0, $v1, .no_clip_b_y0
nop
ori $s0, CLIP_BOTTOM
.no_clip_b_y0:
# X1 clip test
mfc2 $t7, C2_SXY1
sll $v1, $t8, 16
sra $v1, 16
sll $v0, $t7, 16
sra $v0, 16
bge $v0, $v1, .no_clip_l_x1
move $s1, $0
ori $s1, CLIP_LEFT
.no_clip_l_x1:
sll $v1, $t9, 16
sra $v1, 16
ble $v0, $v1, .no_clip_r_x1
nop
ori $s1, CLIP_RIGHT
.no_clip_r_x1:
# Y1 clip test
sra $v0, $t7, 16
sra $v1, $t8, 16
bge $v0, $v1, .no_clip_t_y1
nop
ori $s1, CLIP_TOP
.no_clip_t_y1:
sra $v1, $t9, 16
ble $v0, $v1, .no_clip_b_y1
nop
ori $s1, CLIP_BOTTOM
.no_clip_b_y1:
# X2 clip test
mfc2 $t7, C2_SXY2
sll $v1, $t8, 16
sra $v1, 16
sll $v0, $t7, 16
sra $v0, 16
bge $v0, $v1, .no_clip_l_x2
move $s2, $0
ori $s2, CLIP_LEFT
.no_clip_l_x2:
sll $v1, $t9, 16
sra $v1, 16
ble $v0, $v1, .no_clip_r_x2
nop
ori $s2, CLIP_RIGHT
.no_clip_r_x2:
# Y2 clip test
sra $v0, $t7, 16
sra $v1, $t8, 16
bge $v0, $v1, .no_clip_t_y2
nop
ori $s2, CLIP_TOP
.no_clip_t_y2:
sra $v1, $t9, 16
ble $v0, $v1, .no_clip_b_y2
nop
ori $s2, CLIP_BOTTOM
.no_clip_b_y2:
.endm
.macro ClipTestQuad
# X0 clip test
sll $v0, $t6, 16
sra $v0, 16
sll $v1, $t8, 16
sra $v1, 16
bge $v0, $v1, .no_clip_l_x0_q
move $s0, $0
ori $s0, CLIP_LEFT
.no_clip_l_x0_q:
sll $v1, $t9, 16
sra $v1, 16
ble $v0, $v1, .no_clip_r_x0_q
nop
ori $s0, CLIP_RIGHT
.no_clip_r_x0_q:
# Y0 clip test
sra $v0, $t6, 16
sra $v1, $t8, 16
bge $v0, $v1, .no_clip_t_y0_q
nop
ori $s0, CLIP_TOP
.no_clip_t_y0_q:
sra $v1, $t9, 16
ble $v0, $v1, .no_clip_b_y0_q
nop
ori $s0, CLIP_BOTTOM
.no_clip_b_y0_q:
# X1 clip test
mfc2 $t7, C2_SXY0
sll $v1, $t8, 16
sra $v1, 16
sll $v0, $t7, 16
sra $v0, 16
bge $v0, $v1, .no_clip_l_x1_q
move $s1, $0
ori $s1, CLIP_LEFT
.no_clip_l_x1_q:
sll $v1, $t9, 16
sra $v1, 16
ble $v0, $v1, .no_clip_r_x1_q
nop
ori $s1, CLIP_RIGHT
.no_clip_r_x1_q:
# Y1 clip test
sra $v0, $t7, 16
sra $v1, $t8, 16
bge $v0, $v1, .no_clip_t_y1_q
nop
ori $s1, CLIP_TOP
.no_clip_t_y1_q:
sra $v1, $t9, 16
ble $v0, $v1, .no_clip_b_y1_q
nop
ori $s1, CLIP_BOTTOM
.no_clip_b_y1_q:
# X2 clip test
mfc2 $t7, C2_SXY1
sll $v1, $t8, 16
sra $v1, 16
sll $v0, $t7, 16
sra $v0, 16
bge $v0, $v1, .no_clip_l_x2_q
move $s2, $0
ori $s2, CLIP_LEFT
.no_clip_l_x2_q:
sll $v1, $t9, 16
sra $v1, 16
ble $v0, $v1, .no_clip_r_x2_q
nop
ori $s2, CLIP_RIGHT
.no_clip_r_x2_q:
# Y2 clip test
sra $v0, $t7, 16
sra $v1, $t8, 16
bge $v0, $v1, .no_clip_t_y2_q
nop
ori $s2, CLIP_TOP
.no_clip_t_y2_q:
sra $v1, $t9, 16
ble $v0, $v1, .no_clip_b_y2_q
nop
ori $s2, CLIP_BOTTOM
.no_clip_b_y2_q:
# X3 clip test
mfc2 $t7, C2_SXY2
sll $v1, $t8, 16
sra $v1, 16
sll $v0, $t7, 16
sra $v0, 16
bge $v0, $v1, .no_clip_l_x3_q
move $s3, $0
ori $s3, CLIP_LEFT
.no_clip_l_x3_q:
sll $v1, $t9, 16
sra $v1, 16
ble $v0, $v1, .no_clip_r_x3_q
nop
ori $s3, CLIP_RIGHT
.no_clip_r_x3_q:
# Y4 clip test
sra $v0, $t7, 16
sra $v1, $t8, 16
bge $v0, $v1, .no_clip_t_y3_q
nop
ori $s3, CLIP_TOP
.no_clip_t_y3_q:
sra $v1, $t9, 16
ble $v0, $v1, .no_clip_b_y3_q
nop
ori $s3, CLIP_BOTTOM
.no_clip_b_y3_q:
.endm
|
