Dreamcast: Port clipped transforms to assembly, broken though

This commit is contained in:
UnknownShadow200 2024-07-07 19:44:13 +10:00
parent eacb76fb0c
commit c891f09b7e
4 changed files with 794 additions and 147 deletions

View file

@ -1,19 +1,9 @@
! r0 CLOBBERS
! r1 CLOBBERS
! r2 CLOBBERS
! r3 CLOBBERS
! r7 CLOBBERS
! r4 = v1
! r5 = v2
! r6 = OUT
#define TM1 r1
#define TM2 r3
#define TM3 r7
#define IN1 r4
#define IN2 r5
#define OUT r6
! r1 = v1, CLOBBERS
! r2 = v2, CLOBBERS
! r3 = OUT, CLOBBERS
! r4 = TMP 1, preserved
! r5 = TMP 2, preserved
! r0 = CL0, CLOBBERS
! FR0 = 0
! FR1 = 0
@ -28,6 +18,17 @@
! FR10 = invT
! FR11 = t
#define TM1 r0
#define TM2 r4
#define CLO r5
#define IN1 r1
#define IN2 r2
#define OUT r3
#define CL1 r1
#define CL2 r2
! Calculates the near plane intersection point between two points:
! float t = fabsf(v1->z) / fabsf(v2->z - v1->z)
! float invt = 1.0f - t;
@ -57,6 +58,8 @@
.align 4
.type _ClipLine,%function
_ClipLine:
mov.l r4,@-r15 ! LS, push(r4)
mov.l r5,@-r15 ! LS, push(r5)
mov IN1, TM1 ! MT, tmp = &v1
fldi0 fr4 ! LS, fr4 = 0
add #12, TM1 ! EX, tmp = &v1->z
@ -74,17 +77,17 @@ _ClipLine:
fsrra fr11 ! FE, fr11 = 1 / abs(v2->z - v1->z)
fabs fr2 ! LS, fr2 = abs(v1->z)
fmul fr2,fr11 ! FE, fr11 = abs(v1->Z) / abs(v2->z - v1->z) --> t
add #4, IN1 ! EX, A = &v1->x
add #4, IN1 ! EX, v1 += 4
fldi1 fr10 ! LS, fr10 = 1
add #4, IN2 ! EX, B = &v2->x
add #4, OUT ! EX, OUT = &OUT->x
add #4, IN2 ! EX, v2 += 4
add #4, OUT ! EX, OUT += 4
fsub fr11,fr10 ! FE, fr10 = 1.0 - t --> invT
fmov.s @IN1+, fr2 ! LS, A1 = v1->x
fmov.s @IN2+, fr3 ! LS, B1 = v2->x
fmov.s @IN1+, fr2 ! LS, A1 = v1->x, v1 += 4
fmov.s @IN2+, fr3 ! LS, B1 = v2->x, v2 += 4
fipr fv8, fv0 ! FE, LERP(A1, B1)
fmov.s @IN1+, fr6 ! LS, A2 = v1->y
fmov.s @IN2+, fr7 ! LS, B2 = v2->y
fmov.s @IN1+, fr6 ! LS, A2 = v1->y, v1 += 4
fmov.s @IN2+, fr7 ! LS, B2 = v2->y, v2 += 4
fmov.s fr3,@OUT ! LS, OUT->x = LERP
add #4, OUT ! EX, OUT += 4
@ -97,82 +100,89 @@ _ClipLine:
fmov.s fr1,@OUT ! LS, OUT->z = 0
add #4, OUT ! EX, OUT += 4
fmov.s @IN1+, fr2 ! LS, A1 = v1->u
fmov.s @IN2+, fr3 ! LS, B1 = v2->u
fmov.s @IN1+, fr2 ! LS, A1 = v1->u, v1 += 4
fmov.s @IN2+, fr3 ! LS, B1 = v2->u, v2 += 4
fipr fv8, fv0 ! FE, LERP(A1, B1)
fmov.s @IN1+, fr6 ! LS, A2 = v1->v
fmov.s @IN2+, fr7 ! LS, B2 = v2->v
fmov.s @IN1+, fr6 ! LS, A2 = v1->v, v1 += 4
fmov.s @IN2+, fr7 ! LS, B2 = v2->v, v2 += 4
fmov.s fr3,@OUT ! LS, OUT->u = LERP
add #4, OUT ! EX, OUT += 4
fipr fv8, fv4 ! FE, LERP(A2, B2)
add #4, IN1 ! EX, v1 += 4
add #4, IN2 ! EX, v2 += 4
fmov.s @IN1,fr2 ! LS, A1 = v1->w
fmov.s @IN2,fr3 ! LS, B1 = v2->w
fmov.s fr7,@OUT ! LS, OUT->v = LERP
add #4, OUT ! EX, OUT += 4
add #8, OUT ! EX, OUT += 8
mov.l @IN1+,r0 ! LS, ACOLOR = v1->bgra
extu.b r0,r1 ! EX, tmp = ACOLOR.b
lds r1,fpul ! CO, FPUL = tmp
fipr fv8, fv0 ! FE, LERP(A1, B1)
add #-4, IN1 ! EX, v1 -= 4
add #-4, IN2 ! EX, v2 -= 4
fmov.s fr3,@OUT ! LS, OUT->w = lerp
add #-4, OUT ! EX, OUT -= 4
mov.l @IN1+,CL1 ! LS, ACOLOR = v1->bgra
extu.b CL1,TM1 ! EX, val = ACOLOR.b
lds TM1,fpul ! CO, FPUL = val
float fpul,fr2 ! EX, fr2 = float(FPUL)
mov.l @IN2+,r2 ! LS, BCOLOR = v2->bgra
extu.b r2,r3 ! EX, tmp = BCOLOR.b
lds r3,fpul ! CO, FPUL = tmp
mov.l @IN2+,CL2 ! LS, BCOLOR = v2->bgra
extu.b CL2,TM1 ! EX, val = BCOLOR.b
lds TM1,fpul ! CO, FPUL = val
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
shlr8 CL1 ! EX, ACOLOR >>= 8
ftrc fr3,fpul ! FE, FPUL = int(lerp)
shlr8 CL2 ! EX, BCOLOR >>= 8
sts fpul,TM2 ! CO, tmp = FPUL
extu.b CL1,TM1 ! EX, val = ACOLOR.g
lds TM1,fpul ! CO, FPUL = val
float fpul,fr2 ! EX, fr2 = float(FPUL)
extu.b CL2,TM1 ! EX, val = BCOLOR.g
lds TM1,fpul ! CO, FPUL = val
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
shlr8 CL1 ! EX, ACOLOR >>= 8
ftrc fr3,fpul ! FE, FPUL = int(lerp)
extu.b TM2,TM2 ! EX, tmp = (uint8)tmp
mov TM2,CLO ! MT, OUTCOLOR.b = tmp
shlr8 CL2 ! EX, BCOLOR >>= 8
sts fpul,TM2 ! CO, tmp = FPUL
extu.b CL1,TM1 ! EX, val = ACOLOR.b
lds TM1,fpul ! CO, FPUL = val
float fpul,fr2 ! EX, fr2 = float(FPUL)
extu.b CL2,TM1 ! EX, val = BCOLOR.b
lds TM1,fpul ! CO, FPUL = val
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
shlr8 CL1 ! EX, ACOLOR >>= 8
ftrc fr3,fpul ! FE, FPUL = int(lerp)
extu.b TM2,TM2 ! EX, tmp = (uint8)tmp
shll8 TM2 ! EX, tmp <<= 8
or TM2,CLO ! EX, OUTCOLOR.r |= tmp
shlr8 CL2 ! EX, BCOLOR >>= 8
sts fpul,TM2 ! CO, tmp = FPUL
extu.b CL1,TM1 ! EX, val = ACOLOR.r
lds TM1,fpul ! CO, FPUL = val
float fpul,fr2 ! EX, fr2 = float(FPUL)
extu.b CL2,TM1 ! EX, val = BCOLOR.r
lds TM1,fpul ! CO, FPUL = val
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
ftrc fr3,fpul ! FE, FPUL = int(lerp)
sts fpul,r3 ! CO, tmp = FPUL
extu.b r3,r3 ! EX, tmp = (uint8)tmp
mov r3, r7 ! MT, OUTCOLOR.b = tmp
shlr8 r0 ! EX, ACOLOR >>= 8
extu.b r0,r1 ! EX, tmp = ACOLOR.g
lds r1,fpul ! CO, FPUL = tmp
float fpul,fr2 ! EX, fr2 = float(FPUL)
shlr8 r2 ! EX, BCOLOR >>= 8
extu.b r2,r3 ! EX, tmp = BCOLOR.g
lds r3,fpul ! CO, FPUL = tmp
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
ftrc fr3,fpul ! FE, FPUL = int(lerp)
sts fpul,r3 ! CO, tmp = FPUL
extu.b r3,r3 ! EX, tmp = (uint8)tmp
shll8 r3 ! EX, tmp <<= 8
or r3,r7 ! EX, OUTCOLOR.r |= tmp
shlr8 r0 ! EX, ACOLOR >>= 8
extu.b r0,r1 ! EX, tmp = ACOLOR.b
lds r1,fpul ! CO, FPUL = tmp
float fpul,fr2 ! EX, fr2 = float(FPUL)
shlr8 r2 ! EX, BCOLOR >>= 8
extu.b r2,r3 ! EX, tmp = BCOLOR.b
lds r3,fpul ! CO, FPUL = tmp
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
ftrc fr3,fpul ! FE, FPUL = int(lerp)
sts fpul,r3 ! CO, tmp = FPUL
extu.b r3,r3 ! EX, tmp = (uint8)tmp
shll16 r3 ! EX, tmp <<= 16
or r3,r7 ! EX, OUTCOLOR.g |= tmp
shlr8 r0 ! EX, ACOLOR >>= 8
extu.b r0,r1 ! EX, tmp = ACOLOR.r
lds r1,fpul ! CO, FPUL = tmp
float fpul,fr2 ! EX, fr2 = float(FPUL)
shlr8 r2 ! EX, BCOLOR >>= 8
extu.b r2,r3 ! EX, tmp = BCOLOR.r
lds r3,fpul ! CO, FPUL = tmp
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
ftrc fr3,fpul ! FE, FPUL = int(lerp)
sts fpul,r3 ! CO, tmp = FPUL
extu.b r3,r3 ! EX, tmp = (uint8)tmp
shll16 r3 ! EX, tmp <<= 16
shll8 r3 ! EX, tmp <<= 8
or r3,r7 ! EX, OUTCOLOR.a |= tmp
mov.l r7,@OUT ! LS, OUT->color = OUTCOLOR
fmov.s @IN1+,fr2 ! LS, A1 = v1->w
fmov.s @IN2+,fr3 ! LS, B1 = v2->w
fipr fv8, fv0 ! FE, LERP(A1, B1)
add #4, OUT ! EX, OUT += 4
rts ! CO, return after executing instruction in delay slot
fmov.s fr3,@OUT ! LS, OUT->w = lerp
extu.b TM2,TM2 ! EX, tmp = (uint8)tmp
shll16 TM2 ! EX, tmp <<= 16
or TM2,CLO ! EX, OUTCOLOR.g |= tmp
sts fpul,TM2 ! CO, tmp = FPUL
extu.b TM2,TM2 ! EX, tmp = (uint8)tmp
shll16 TM2 ! EX, tmp <<= 16
shll8 TM2 ! EX, tmp <<= 8
or TM2,CLO ! EX, OUTCOLOR.a |= tmp
mov.l CLO,@OUT ! LS, OUT->color = OUTCOLOR
mov.l @r15+,r5 ! LS, pop(r5)
rts ! CO, return after executing instruction in delay slot
mov.l @r15+,r4 ! LS, pop(r4)

View file

@ -0,0 +1,183 @@
! r1 CLOBBERS
! r3 CLOBBERS
! r7 CLOBBERS
! r4 = v1
! r5 = v2
! r6 = OUT
! FR0 = 0
! FR1 = 0
! FR2 = A.1
! FR3 = B.1
! FR4 = 0
! FR5 = 0
! FR6 = A.2
! FR7 = B.2
! FR8 = 0
! FR9 = 0
! FR10 = invT
! FR11 = t
#define TM1 r1
#define TM2 r3
#define IN1 r4
#define IN2 r5
#define OUT r6
#define CL1 r4
#define CL2 r5
#define CLO r7
! Calculates the near plane intersection point between two points:
! float t = fabsf(v1->z) / fabsf(v2->z - v1->z)
! float invt = 1.0f - t;
!
! out->x = invt * v1->x + t * v2->x;
! out->y = invt * v1->y + t * v2->y;
! out->z = 0.0f; // clipped against near plane anyways (I.e Z/W = 0 --> Z = 0)
!
! out->u = invt * v1->u + t * v2->u;
! out->v = invt * v1->v + t * v2->v;
! out->w = invt * v1->w + t * v2->w;
!
! out->b = invt * v1->b + t * v2->b;
! out->g = invt * v1->g + t * v2->g;
! out->r = invt * v1->r + t * v2->r;
! out->a = invt * v1->a + t * v2->a;
! To optimise these calculations, FIPR is used:
! FIPR = FVm.x*FVn.x + FVm.y*FVn.x + FVm.z*FVn.z + FVm.w*FVn.w --> FVn.w
! FIPR can be used to accomplish "vout->Q invt * v1->Q + t * v2->Q" by:
! - assigning x/y components to 0 for both vectors
! - assigning t and invT to z/w of FVm vector
! - assigning v1 and v2 to z/w of FVn vector
! FIPR = 0*0 + 0*0 + t*v1->Q + invT*v2->Q --> FVn.w
! FIPR = t*v1->Q + invT*v2->Q --> FVn.w
.global _ClipEdge
.align 4
.type _ClipEdge,%function
_ClipEdge:
mov IN1, TM1 ! MT, tmp = &v1
fldi0 fr4 ! LS, fr4 = 0
add #12, TM1 ! EX, tmp = &v1->z
fmov.s @r1, fr2 ! LS, fr2 = v1->z
mov IN2, TM1 ! MT, tmp = &v2
fldi0 fr5 ! LS, fr5 = 0
add #12, TM1 ! EX, tmp = &v2->z
fmov.s @r1,fr11 ! LS, fr11 = v2->z
fsub fr2,fr11 ! FE, fr11 = v2->z - v1->z
fldi0 fr8 ! LS, fr8 = 0
fmul fr11,fr11 ! FE, fr11 = (v2->z - v1->z) * (v2->z * v1->z)
fldi0 fr9 ! LS, fr9 = 0
fldi0 fr0 ! LS, fr0 = 0
fldi0 fr1 ! LS, fr1 = 0
fsrra fr11 ! FE, fr11 = 1 / abs(v2->z - v1->z)
fabs fr2 ! LS, fr2 = abs(v1->z)
fmul fr2,fr11 ! FE, fr11 = abs(v1->Z) / abs(v2->z - v1->z) --> t
add #4, IN1 ! EX, v1 += 4
fldi1 fr10 ! LS, fr10 = 1
add #4, IN2 ! EX, v2 += 4
add #4, OUT ! EX, OUT += 4
fsub fr11,fr10 ! FE, fr10 = 1.0 - t --> invT
fmov.s @IN1+, fr2 ! LS, A1 = v1->x, v1 += 4
fmov.s @IN2+, fr3 ! LS, B1 = v2->x, v2 += 4
fipr fv8, fv0 ! FE, LERP(A1, B1)
fmov.s @IN1+, fr6 ! LS, A2 = v1->y, v1 += 4
fmov.s @IN2+, fr7 ! LS, B2 = v2->y, v2 += 4
fmov.s fr3,@OUT ! LS, OUT->x = LERP
add #4, OUT ! EX, OUT += 4
fipr fv8, fv4 ! FE, LERP(A2, B2)
add #4, IN1 ! EX, v1 += 4
add #4, IN2 ! EX, v2 += 4
fmov.s fr7,@OUT ! LS, OUT->y = LERP
add #4, OUT ! EX, OUT += 4
fmov.s fr1,@OUT ! LS, OUT->z = 0
add #4, OUT ! EX, OUT += 4
fmov.s @IN1+, fr2 ! LS, A1 = v1->u, v1 += 4
fmov.s @IN2+, fr3 ! LS, B1 = v2->u, v2 += 4
fipr fv8, fv0 ! FE, LERP(A1, B1)
fmov.s @IN1+, fr6 ! LS, A2 = v1->v, v1 += 4
fmov.s @IN2+, fr7 ! LS, B2 = v2->v, v2 += 4
fmov.s fr3,@OUT ! LS, OUT->u = LERP
add #4, OUT ! EX, OUT += 4
fipr fv8, fv4 ! FE, LERP(A2, B2)
add #4, IN1 ! EX, v1 += 4
add #4, IN2 ! EX, v2 += 4
fmov.s @IN1,fr2 ! LS, A1 = v1->w
fmov.s @IN2,fr3 ! LS, B1 = v2->w
fmov.s fr7,@OUT ! LS, OUT->v = LERP
add #8, OUT ! EX, OUT += 8
fipr fv8, fv0 ! FE, LERP(A1, B1)
add #-4, IN1 ! EX, v1 -= 4
add #-4, IN2 ! EX, v2 -= 4
fmov.s fr3,@OUT ! LS, OUT->w = lerp
add #-4, OUT ! EX, OUT -= 4
mov.l @IN1+,CL1 ! LS, ACOLOR = v1->bgra
extu.b CL1,TM1 ! EX, val = ACOLOR.b
lds TM1,fpul ! CO, FPUL = val
float fpul,fr2 ! EX, fr2 = float(FPUL)
mov.l @IN2+,CL2 ! LS, BCOLOR = v2->bgra
extu.b CL2,TM1 ! EX, val = BCOLOR.b
lds TM1,fpul ! CO, FPUL = val
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
shlr8 CL1 ! EX, ACOLOR >>= 8
ftrc fr3,fpul ! FE, FPUL = int(lerp)
shlr8 CL2 ! EX, BCOLOR >>= 8
sts fpul,TM2 ! CO, tmp = FPUL
extu.b CL1,TM1 ! EX, val = ACOLOR.g
lds TM1,fpul ! CO, FPUL = val
float fpul,fr2 ! EX, fr2 = float(FPUL)
extu.b CL2,TM1 ! EX, val = BCOLOR.g
lds TM1,fpul ! CO, FPUL = val
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
shlr8 CL1 ! EX, ACOLOR >>= 8
ftrc fr3,fpul ! FE, FPUL = int(lerp)
extu.b TM2,TM2 ! EX, tmp = (uint8)tmp
mov TM2,CLO ! MT, OUTCOLOR.b = tmp
shlr8 CL2 ! EX, BCOLOR >>= 8
sts fpul,TM2 ! CO, tmp = FPUL
extu.b CL1,TM1 ! EX, val = ACOLOR.b
lds TM1,fpul ! CO, FPUL = val
float fpul,fr2 ! EX, fr2 = float(FPUL)
extu.b CL2,TM1 ! EX, val = BCOLOR.b
lds TM1,fpul ! CO, FPUL = val
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
shlr8 CL1 ! EX, ACOLOR >>= 8
ftrc fr3,fpul ! FE, FPUL = int(lerp)
extu.b TM2,TM2 ! EX, tmp = (uint8)tmp
shll8 TM2 ! EX, tmp <<= 8
or TM2,CLO ! EX, OUTCOLOR.r |= tmp
shlr8 CL2 ! EX, BCOLOR >>= 8
sts fpul,TM2 ! CO, tmp = FPUL
extu.b CL1,TM1 ! EX, val = ACOLOR.r
lds TM1,fpul ! CO, FPUL = val
float fpul,fr2 ! EX, fr2 = float(FPUL)
extu.b CL2,TM1 ! EX, val = BCOLOR.r
lds TM1,fpul ! CO, FPUL = val
float fpul,fr3 ! EX, fr3 = float(FPUL)
fipr fv8, fv0 ! FE, LERP(A1, B1)
ftrc fr3,fpul ! FE, FPUL = int(lerp)
extu.b TM2,TM2 ! EX, tmp = (uint8)tmp
shll16 TM2 ! EX, tmp <<= 16
or TM2,CLO ! EX, OUTCOLOR.g |= tmp
sts fpul,TM2 ! CO, tmp = FPUL
extu.b TM2,TM2 ! EX, tmp = (uint8)tmp
shll16 TM2 ! EX, tmp <<= 16
shll8 TM2 ! EX, tmp <<= 8
or TM2,CLO ! EX, OUTCOLOR.a |= tmp
rts ! CO, return after executing instruction in delay slot
mov.l CLO,@OUT ! LS, OUT->color = OUTCOLOR

View file

@ -11,11 +11,6 @@
!fr10 = VIEWPORT_X_PLUS_HWIDTH
!fr11 = VIEWPORT_Y_PLUS_HHEIGHT
#define REG_V0 r4
#define REG_V1 r5
#define REG_V2 r6
#define REG_V3 r7
.align 4
! Pushes a vertex to the store queue
@ -79,37 +74,494 @@
add #-12, \R ! EX, \R -= 12 (back to start of vertex)
.endm
! Transforms then pushes a vertex to the store queue
! CLOBBERS: r3, fr0, fr4, fr5
! INPUTS: R (vertex), r8 (SQ global)
! OUTPUTS: r8 altered
.macro TransformVertex R
! INVERSE W CALCULATION
add #28, \R ! EX, \R = &vertex->w
fmov.s @\R,fr0 ! LS, fr0 = vertex->w
fmul fr0,fr0 ! FE, fr0 = fr0 * fr0
add #-24, \R ! EX, \R = &vertex->x
fsrra fr0 ! FE, fr0 = 1 / sqrt(fr0) -> 1 / vertex->w
! TRANSFORM X
fmov.s @\R,fr4 ! LS, fr4 = vertex->x
fmov fr10,fr5 ! LS, fr5 = VIEWPORT_X_PLUS_HWIDTH
fmul fr8,fr4 ! FE, fr4 = VIEWPORT_HWIDTH * vertex->x
fmac fr0,fr4,fr5 ! FE, fr5 = fr0 * fr4 + fr5 -- (X * F * hwidth) + x_plus_hwidth
fmov.s fr5,@\R ! LS, vertex->x = fr5
add #4, \R ! EX, \R = &vertex->y
! TRANSFORM Y
fmov.s @\R,fr4 ! LS, fr4 = vertex->y
fmov fr11,fr5 ! LS, fr5 = VIEWPORT_Y_PLUS_HHEIGHT
fmul fr9,fr4 ! FE, fr4 = VIEWPORT_HHEIGHT * vertex->y
fmac fr0,fr4,fr5 ! FE, fr5 = fr0 * fr4 + fr5 -- (Y * F * hheight) + y_plus_hheight
fmov.s fr5,@\R ! LS, vertex->y = fr5
add #4, \R ! EX, \R = &vertex->z
! ASSIGN Z
fmov.s fr0,@\R ! LS, vertex->z = fr0
add #-12, \R ! EX, \R -= 12 (back to start of vertex)
! memcpy(r8, \R, 28)
mov.l @(0,\R), r3
mov.l r3, @(0,r8)
mov.l @(4,\R), r3
mov.l r3, @(4,r8)
mov.l @(8,\R), r3
mov.l r3, @(8,r8)
mov.l @(12,\R),r3
mov.l r3,@(12,r8)
mov.l @(16,\R),r3
mov.l r3,@(16,r8)
mov.l @(20,\R),r3
mov.l r3,@(20,r8)
mov.l @(24,\R),r3
mov.l r3,@(24,r8)
pref @r8 ! LS, Trigger SQ
add #32,r8 ! EX, SQ += 32
.endm
#define REG_CLIP1 r1
#define REG_CLIP2 r2
#define REG_V0 r4
#define REG_V1 r5
#define REG_V2 r6
#define REG_V3 r7
#define REG_CMD_VTX r10
#define REG_CMD_EOL r11
#define REG_CLIPFUNC r12
! r3 also matches out parameter for ClipLine
#define REG_TMP r3
#define TMP_SET_A \
mov r15, REG_TMP
#define TMP_SET_B \
mov r15, REG_TMP; add #32, REG_TMP
_Case_0_0_0_1:
_Case_0_0_1_0:
_Case_0_0_1_1:
_Case_0_1_0_0:
_Case_0_1_0_1:
_Case_0_1_1_0:
_Case_0_1_1_1:
_Case_1_0_0_0:
_Case_1_0_0_1:
_Case_1_0_1_0:
_Case_1_0_1_1:
_Case_1_1_0_0:
_Case_1_1_0_1:
_Case_1_1_1_0:
rts
rts; nop
! v0
! / |
! / |
! .....A....B...
! / |
! v3--v2---v1
sts.l pr,@-r15
TMP_SET_A
mov REG_V3, REG_CLIP1
mov REG_V0, REG_CLIP2
mov.l REG_CMD_EOL, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V0, REG_CLIP1
mov REG_V1, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TransformVertex REG_V0
TMP_SET_B
TransformVertex REG_TMP
TMP_SET_A
TransformVertex REG_TMP
rts
lds.l @r15+,pr
_Case_0_0_1_0:
rts; nop
! v1
! / |
! / |
! ....A.....B...
! / |
! v0--v3---v2
sts.l pr,@-r15
TMP_SET_A
mov REG_V0, REG_CLIP1
mov REG_V1, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V0, REG_CLIP1
mov REG_V1, REG_CLIP2
mov.l REG_CMD_EOL, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_A
TransformVertex REG_TMP
TransformVertex REG_V1
TMP_SET_B
TransformVertex REG_TMP
rts
lds.l @r15+,pr
_Case_0_1_0_0:
rts; nop
! v2
! / |
! / |
! ....A.....B...
! / |
! v1--v0---v3
sts.l pr,@-r15
TMP_SET_A
mov REG_V1, REG_CLIP1
mov REG_V2, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V2, REG_CLIP1
mov REG_V3, REG_CLIP2
mov.l REG_CMD_EOL, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_A
TransformVertex REG_TMP
TransformVertex REG_V2
TMP_SET_B
TransformVertex REG_TMP
rts
lds.l @r15+,pr
_Case_1_0_0_0:
rts; nop
! v3
! / |
! / |
! ....A.....B...
! / |
! v2--v1---v0
sts.l pr,@-r15
TMP_SET_A
mov REG_V2, REG_CLIP1
mov REG_V3, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V3, REG_CLIP1
mov REG_V0, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
TransformVertex REG_TMP
TMP_SET_A
TransformVertex REG_TMP
TransformVertex REG_V3
rts
lds.l @r15+,pr
_Case_0_0_1_1:
rts; nop
! v0-----------v1
! \ |
! ....B..........A...
! \ |
! v3-----v2
sts.l pr,@-r15
TMP_SET_A
mov REG_V1, REG_CLIP1
mov REG_V2, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V3, REG_CLIP1
mov REG_V0, REG_CLIP2
mov.l REG_CMD_EOL, @REG_TMP
jsr @REG_CLIPFUNC
nop
TransformVertex REG_V1
TMP_SET_A
TransformVertex REG_TMP
TransformVertex REG_V0
TMP_SET_B
TransformVertex REG_TMP
rts
lds.l @r15+,pr
_Case_1_0_0_1:
rts; nop
! v3-----------v0
! \ |
! ....B..........A...
! \ |
! v2-----v1
sts.l pr,@-r15
TMP_SET_A
mov REG_V0, REG_CLIP1
mov REG_V1, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V2, REG_CLIP1
mov REG_V3, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_A
TransformVertex REG_TMP
TMP_SET_B
TransformVertex REG_TMP
TransformVertex REG_V0
TransformVertex REG_V3
rts
lds.l @r15+,pr
_Case_0_1_1_0:
rts; nop
! v1-----------v2
! \ |
! ....B..........A...
! \ |
! v0-----v3
sts.l pr,@-r15
TMP_SET_A
mov REG_V2, REG_CLIP1
mov REG_V3, REG_CLIP2
mov.l REG_CMD_EOL, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V0, REG_CLIP1
mov REG_V1, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TransformVertex REG_V1
TransformVertex REG_V2
TMP_SET_B
TransformVertex REG_TMP
TMP_SET_A
TransformVertex REG_TMP
rts
lds.l @r15+,pr
_Case_1_1_0_0:
rts; nop
! v2-----------v3
! \ |
! ....B..........A...
! \ |
! v1-----v0
sts.l pr,@-r15
TMP_SET_A
mov REG_V3, REG_CLIP1
mov REG_V0, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V1, REG_CLIP1
mov REG_V2, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
TransformVertex REG_TMP
TransformVertex REG_V2
TMP_SET_A
TransformVertex REG_TMP
TransformVertex REG_V3
rts
lds.l @r15+,pr
_Case_0_1_1_1:
rts; nop
! --v1--
! v0-- --v2
! \ |
! .....B.....A...
! \ |
! v3
! v1,v2,v0 v2,v0,A v0,A,B
sts.l pr,@-r15
TMP_SET_A
mov REG_V2, REG_CLIP1
mov REG_V3, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V3, REG_CLIP1
mov REG_V0, REG_CLIP2
mov.l REG_CMD_EOL, @REG_TMP
jsr @REG_CLIPFUNC
nop
TransformVertex REG_V1
TransformVertex REG_V2
TransformVertex REG_V0
TMP_SET_A
TransformVertex REG_TMP
TMP_SET_B
TransformVertex REG_TMP
rts
lds.l @r15+,pr
_Case_1_0_1_1:
rts; nop
! --v0--
! v3-- --v1
! \ |
! .....B.....A...
! \ |
! v2
! v0,v1,v3 v1,v3,A v3,A,B
sts.l pr,@-r15
TMP_SET_A
mov REG_V1, REG_CLIP1
mov REG_V2, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V2, REG_CLIP1
mov REG_V3, REG_CLIP2
mov.l REG_CMD_EOL, @REG_TMP
jsr @REG_CLIPFUNC
mov.l REG_CMD_VTX, @REG_V3
TransformVertex REG_V0
TransformVertex REG_V1
TransformVertex REG_V3
TMP_SET_A
TransformVertex REG_TMP
TMP_SET_B
TransformVertex REG_TMP
rts
lds.l @r15+,pr
_Case_1_1_0_1:
rts; nop
! --v3--
! v2-- --v0
! \ |
! .....B.....A...
! \ |
! v1
! v3,v0,v2 v0,v2,A v2,A,B
sts.l pr,@-r15
TMP_SET_A
mov REG_V0, REG_CLIP1
mov REG_V1, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V1, REG_CLIP1
mov REG_V2, REG_CLIP2
mov.l REG_CMD_EOL, @REG_TMP
jsr @REG_CLIPFUNC
mov.l REG_CMD_VTX, @REG_V3
TransformVertex REG_V3
TransformVertex REG_V0
TransformVertex REG_V2
TMP_SET_A
TransformVertex REG_TMP
TMP_SET_B
TransformVertex REG_TMP
rts
lds.l @r15+,pr
_Case_1_1_1_0:
rts; nop
! --v2--
! v1-- --v3
! \ |
! .....B.....A...
! \ |
! v0
! v2,v3,v1 v3,v1,A v1,A,B
sts.l pr,@-r15
TMP_SET_A
mov REG_V3, REG_CLIP1
mov REG_V0, REG_CLIP2
mov.l REG_CMD_VTX, @REG_TMP
jsr @REG_CLIPFUNC
nop
TMP_SET_B
mov REG_V0, REG_CLIP1
mov REG_V1, REG_CLIP2
mov.l REG_CMD_EOL, @REG_TMP
jsr @REG_CLIPFUNC
mov.l REG_CMD_VTX, @REG_V3
TransformVertex REG_V2
TransformVertex REG_V3
TransformVertex REG_V1
TMP_SET_A
TransformVertex REG_TMP
TMP_SET_B
TransformVertex REG_TMP
rts
lds.l @r15+,pr
_Case_1_1_1_1:
! Triangle strip: {1,2,0} {2,0,3}
ViewportTransform REG_V1
PushVertex REG_V1
ViewportTransform REG_V2
PushVertex REG_V2
ViewportTransform REG_V0
PushVertex REG_V0
ViewportTransform REG_V3
PushVertex REG_V3
TransformVertex REG_V1
TransformVertex REG_V2
TransformVertex REG_V0
TransformVertex REG_V3
rts
nop
@ -144,8 +596,9 @@ _ProcessVertexList:
mov.l .PVR_EOL, r11
mov.l .PVR_VTX, r10
mov r5,r9
mov r6,r8
bra SUBMIT_LOOP
mov r6,r8
add #-64,r15
! Handles a non-vertex command
DO_CMD:
@ -208,6 +661,7 @@ NEXT_ITER:
bf.s SUBMIT_LOOP
mov r14,r13 ! CUR = NEXT
add #64,r15
! VIEWPORT SAVE
mov.l .VP_1,r0
add #16,r0

View file

@ -46,7 +46,7 @@ static inline void _glPushHeaderOrVertex(Vertex* v) {
sq += 8;
}
extern void ClipLine(const Vertex* const v1, const Vertex* const v2, Vertex* vout);
extern void ClipEdge(const Vertex* const v1, const Vertex* const v2, Vertex* vout);
#define SPAN_SORT_CFG 0x005F8030
static volatile uint32_t* PVR_LMMODE0 = (uint32_t*) 0xA05F6884;
@ -74,9 +74,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// .....A....B...
// / |
// v3--v2---v1
ClipLine(v3, v0, a);
ClipEdge(v3, v0, a);
a->flags = PVR_CMD_VERTEX_EOL;
ClipLine(v0, v1, b);
ClipEdge(v0, v1, b);
b->flags = PVR_CMD_VERTEX;
_glPerspectiveDivideVertex(v0);
@ -97,9 +97,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// ....A.....B...
// / |
// v0--v3---v2
ClipLine(v0, v1, a);
ClipEdge(v0, v1, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v1, v2, b);
ClipEdge(v1, v2, b);
b->flags = PVR_CMD_VERTEX_EOL;
_glPerspectiveDivideVertex(a);
@ -120,9 +120,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// / |
// v1--v0---v3
ClipLine(v1, v2, a);
ClipEdge(v1, v2, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v2, v3, b);
ClipEdge(v2, v3, b);
b->flags = PVR_CMD_VERTEX_EOL;
_glPerspectiveDivideVertex(a);
@ -142,9 +142,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// ....A.....B...
// / |
// v2--v1---v0
ClipLine(v2, v3, a);
ClipEdge(v2, v3, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v3, v0, b);
ClipEdge(v3, v0, b);
b->flags = PVR_CMD_VERTEX;
_glPerspectiveDivideVertex(b);
@ -164,9 +164,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// ....B..........A...
// \ |
// v3-----v2
ClipLine(v1, v2, a);
ClipEdge(v1, v2, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v3, v0, b);
ClipEdge(v3, v0, b);
b->flags = PVR_CMD_VERTEX_EOL;
_glPerspectiveDivideVertex(v1);
@ -189,9 +189,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// ....B..........A...
// \ |
// v2-----v1
ClipLine(v0, v1, a);
ClipEdge(v0, v1, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v2, v3, b);
ClipEdge(v2, v3, b);
b->flags = PVR_CMD_VERTEX;
_glPerspectiveDivideVertex(a);
@ -213,9 +213,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// ....B..........A...
// \ |
// v0-----v3
ClipLine(v2, v3, a);
ClipEdge(v2, v3, a);
a->flags = PVR_CMD_VERTEX_EOL;
ClipLine(v0, v1, b);
ClipEdge(v0, v1, b);
b->flags = PVR_CMD_VERTEX;
_glPerspectiveDivideVertex(v1);
@ -238,9 +238,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// ....B..........A...
// \ |
// v1-----v0
ClipLine(v3, v0, a);
ClipEdge(v3, v0, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v1, v2, b);
ClipEdge(v1, v2, b);
b->flags = PVR_CMD_VERTEX;
_glPerspectiveDivideVertex(b);
@ -264,9 +264,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// \ |
// v3
// v1,v2,v0 v2,v0,A v0,A,B
ClipLine(v2, v3, a);
ClipEdge(v2, v3, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v3, v0, b);
ClipEdge(v3, v0, b);
b->flags = PVR_CMD_VERTEX_EOL;
_glPerspectiveDivideVertex(v1);
@ -293,9 +293,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// \ |
// v2
// v0,v1,v3 v1,v3,A v3,A,B
ClipLine(v1, v2, a);
ClipEdge(v1, v2, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v2, v3, b);
ClipEdge(v2, v3, b);
b->flags = PVR_CMD_VERTEX_EOL;
v3->flags = PVR_CMD_VERTEX;
@ -323,9 +323,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// \ |
// v1
// v3,v0,v2 v0,v2,A v2,A,B
ClipLine(v0, v1, a);
ClipEdge(v0, v1, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v1, v2, b);
ClipEdge(v1, v2, b);
b->flags = PVR_CMD_VERTEX_EOL;
v3->flags = PVR_CMD_VERTEX;
@ -353,9 +353,9 @@ static void SubmitClipped(Vertex* v0, Vertex* v1, Vertex* v2, Vertex* v3, uint8_
// \ |
// v0
// v2,v3,v1 v3,v1,A v1,A,B
ClipLine(v3, v0, a);
ClipEdge(v3, v0, a);
a->flags = PVR_CMD_VERTEX;
ClipLine(v0, v1, b);
ClipEdge(v0, v1, b);
b->flags = PVR_CMD_VERTEX_EOL;
v3->flags = PVR_CMD_VERTEX;