Split off libsmd from n00bdemo into separate library

1 files changed, 339 insertions, 0 deletions

diff --git a/libpsn00b/include/smd/smd_s.inc b/libpsn00b/include/smd/smd_s.inc
new file mode 100644
index 0000000..827e9e3
--- /dev/null
+++ b/libpsn00b/include/smd/smd_s.inc
@@ -0,0 +1,339 @@
+# 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