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Dreamcast: Move clipflag calculation into vertex transform code

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UnknownShadow200 2024-05-14 17:52:02 +10:00
parent 1151eb473d
commit 8621415f50
8 changed files with 291 additions and 203 deletions
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2
.gitignore vendored
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@ -97,6 +97,8 @@ CMakeCache.txt
#GCC object files #GCC object files
*.o *.o
# Build dependency files
*.d
# Roslyn cache directories # Roslyn cache directories
*.ide/ *.ide/

139
misc/dreamcast/DrawColouredQuads.S
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@ -1,7 +1,7 @@
!r0 = prefetch address !r0 = clip flags
!r1 = GPU VERT command !r1 = GPU command
!r2 = GPU EOS command !r2 = temp
!r3 = colour !r3 = prefetch address
!r4 = src pointer ARG !r4 = src pointer ARG
!r5 = dst pointer ARG !r5 = dst pointer ARG
!r6 = quads count ARG !r6 = quads count ARG
@ -10,117 +10,124 @@
!fr5 = y !fr5 = y
!fr6 = z !fr6 = z
!fr7 = w !fr7 = w
!fr9 = 0 !fr9 = u (0.0)
!fr10 = ? !fr10 = v (0.0)
!fr11 = ? !fr11 = saved fr0 (for viewport transform)
!fv4 = XYZW !fv4 = XYZW
.globl _DrawColouredQuads #include "ViewportTransform.S"
.global _DrawColouredQuads
.align 4 .align 4
.type _DrawColouredQuads,%function .type _DrawColouredQuads,%function
! See https://shared-ptr.com/sh_insns.html
! Although there is fmov.s @Rm+,FRn, there isn't fmov.s FRn,@Rm+
! So have to use fmov.s FRn,@-Rm instead
_DrawColouredQuads: _DrawColouredQuads:
! Setup ! Setup
mov.l CMD_COL_VERT, r1 ! r1 = GPU VERT command fldi0 fr9 ! U = 0
mov.l CMD_COL_EOS, r2 ! r2 = GPU EOS command fldi0 fr10 ! V = 0
fldi0 fr9 ! fr9 = 0 mov r4,r3 ! r3 = src
mov r4,r0 ! r0 = src add #-32, r5 ! r5 -= sizeof(VERTEX)
add #-32, r5 ! r5 -= sizeof(VERTEX) fmov fr0,fr11 ! fr11 = saved fr0
nop ! align loop nop ! loop align
.TRANSFORM_QUAD: .TRANSFORM_QUAD:
mov.l CMD_COL_VERT, r1 ! r1 = GPU VERT command
! TRANSFORM VERTEX 1 ! TRANSFORM VERTEX 1
add #16, r0 ! r0 += VERTEX_STRIDE add #16, r3 ! r3 += VERTEX_STRIDE
add #64, r5 ! r5 += 2 * sizeof(VERTEX) add #64, r5 ! r5 += 2 * sizeof(VERTEX)
pref @r0 ! PREFETCH r0 (next vertex) pref @r3 ! PREFETCH r3 (next vertex)
fmov @r4+, fr4 ! fr4 = src->x fmov @r4+, fr4 ! fr4 = src->x
fmov @r4+, fr5 ! fr5 = src->y fmov @r4+, fr5 ! fr5 = src->y
fmov @r4+, fr6 ! fr6 = src->z fmov @r4+, fr6 ! fr6 = src->z
fldi1 fr7 ! fr7 = 1.0 fldi1 fr7 ! fr7 = 1.0
ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7) ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7)
mov.l @r4+,r3 ! r3 = src->color fmov @r4+,fr8 ! C = src->color
fmov.s fr7,@-r5 ! dst->w = fr7 ProcessVertex1
mov.l r3,@-r5 ! dst->bgra = r3
fmov.s fr9,@-r5 ! dst->v = 0.0
fmov.s fr9,@-r5 ! dst->u = 0.0
fmov.s fr6,@-r5 ! dst->z = fr6
fmov.s fr5,@-r5 ! dst->y = fr5
fmov.s fr4,@-r5 ! dst->x = fr4
mov.l r1,@-r5 ! dst->flags = CMD_VERT
! TRANSFORM VERTEX 2 ! TRANSFORM VERTEX 2
add #16, r0 ! r0 += VERTEX_STRIDE add #16, r3 ! r3 += VERTEX_STRIDE
add #64, r5 ! r5 += 2 * sizeof(VERTEX) add #64, r5 ! r5 += 2 * sizeof(VERTEX)
pref @r0 ! PREFETCH r0 (next vertex) pref @r3 ! PREFETCH r3 (next vertex)
fmov @r4+, fr4 ! fr4 = src->x fmov @r4+, fr4 ! fr4 = src->x
fmov @r4+, fr5 ! fr5 = src->y fmov @r4+, fr5 ! fr5 = src->y
fmov @r4+, fr6 ! fr6 = src->z fmov @r4+, fr6 ! fr6 = src->z
fldi1 fr7 ! fr7 = 1.0 fldi1 fr7 ! fr7 = 1.0
ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7) ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7)
mov.l @r4+,r3 ! r3 = src->color fmov @r4+,fr8 ! C = src->color
fmov.s fr7,@-r5 ! dst->w = fr7 ProcessVertex2
mov.l r3,@-r5 ! dst->bgra = r3
fmov.s fr9,@-r5 ! dst->v = 0.0
fmov.s fr9,@-r5 ! dst->u = 0.0
fmov.s fr6,@-r5 ! dst->z = fr6
fmov.s fr5,@-r5 ! dst->y = fr5
fmov.s fr4,@-r5 ! dst->x = fr4
mov.l r1,@-r5 ! dst->flags = CMD_VERT
! TRANSFORM VERTEX 3 ! TRANSFORM VERTEX 3
add #16, r0 ! r0 += VERTEX_STRIDE add #16, r3 ! r3 += VERTEX_STRIDE
add #64, r5 ! r5 += 2 * sizeof(VERTEX) add #64, r5 ! r5 += 2 * sizeof(VERTEX)
pref @r0 ! PREFETCH r0 (next vertex) pref @r3 ! PREFETCH r3 (next vertex)
fmov @r4+, fr4 ! fr4 = src->x fmov @r4+, fr4 ! fr4 = src->x
fmov @r4+, fr5 ! fr5 = src->y fmov @r4+, fr5 ! fr5 = src->y
fmov @r4+, fr6 ! fr6 = src->z fmov @r4+, fr6 ! fr6 = src->z
fldi1 fr7 ! fr7 = 1.0 fldi1 fr7 ! fr7 = 1.0
ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7) ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7)
mov.l @r4+,r3 ! r3 = src->color fmov @r4+,fr8 ! C = src->color
fmov.s fr7,@-r5 ! dst->w = fr7 ProcessVertex3
mov.l r3,@-r5 ! dst->bgra = r3
fmov.s fr9,@-r5 ! dst->v = 0.0
fmov.s fr9,@-r5 ! dst->u = 0.0
fmov.s fr6,@-r5 ! dst->z = fr6
fmov.s fr5,@-r5 ! dst->y = fr5
fmov.s fr4,@-r5 ! dst->x = fr4
mov.l r1,@-r5 ! dst->flags = CMD_VERT
! TRANSFORM VERTEX 4 ! TRANSFORM VERTEX 4
add #16, r0 ! r0 += VERTEX_STRIDE add #16, r3 ! r3 += VERTEX_STRIDE
add #64, r5 ! r5 += 2 * sizeof(VERTEX) add #64, r5 ! r5 += 2 * sizeof(VERTEX)
pref @r0 ! PREFETCH r0 (next vertex) pref @r3 ! PREFETCH r3 (next vertex)
fmov @r4+, fr4 ! fr4 = src->x fmov @r4+, fr4 ! fr4 = src->x
fmov @r4+, fr5 ! fr5 = src->y fmov @r4+, fr5 ! fr5 = src->y
fmov @r4+, fr6 ! fr6 = src->z fmov @r4+, fr6 ! fr6 = src->z
fldi1 fr7 ! fr7 = 1.0 fldi1 fr7 ! fr7 = 1.0
ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7) ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7)
mov.l @r4+,r3 ! r3 = src->color fmov @r4+,fr8 ! C = src->color
fmov.s fr7,@-r5 ! dst->w = fr7 ProcessVertex4 CMD_COL_EOS
mov.l r3,@-r5 ! dst->bgra = r3
fmov.s fr9,@-r5 ! dst->v = 0.0
fmov.s fr9,@-r5 ! dst->u = 0.0
fmov.s fr6,@-r5 ! dst->z = fr6
fmov.s fr5,@-r5 ! dst->y = fr5
fmov.s fr4,@-r5 ! dst->x = fr4
mov.l r2,@-r5 ! dst->flags = CMD_EOS
dt r6 ! r6--; T = 1 if r6 == 0, else 0 ! CLIPFLAGS TESTING
bf .TRANSFORM_QUAD ! if T == 0 then goto TRANSFORM_QUAD cmp/eq #0,r0 ! T = r0 == 0 (all points invisible)
bt/s .NO_POINTS_VISIBLE ! if T goto NO_POINTS_VISIBLE
nop
bra .SOME_POINTS_VISIBLE
nop
.NO_POINTS_VISIBLE:
bra .LOOP_END ! jump to loop end after executing instruction in delay slot
add #-128, r5 ! r5 -= 4 * sizeof(VERTEX), move back to 1 vertex before start of quad
.SOME_POINTS_VISIBLE:
.LOOP_END:
dt r6 ! r6--; T = r6 == 0
bf .TRANSFORM_QUAD ! if !T then goto TRANSFORM_QUAD
nop nop
rts ! return add #32, r5 ! r5 += sizeof(VERTEX)
nop mov r5,r0 ! r0 = r5
rts ! return after executing instruction in delay slot
fmov fr11,fr0 ! fr0 = original fr0
.align 2 .align 2
CMD_COL_VERT: .long 0xe0000000 CMD_COL_VERT: .long 0xe0000000
CMD_COL_EOS: .long 0xf0000000 CMD_COL_EOS: .long 0xf0000000
.global _VP_COL_HWIDTH
.type _VP_COL_HWIDTH,%object
.size _VP_COL_HWIDTH,4
_VP_COL_HWIDTH: .long 0
.global _VP_COL_HHEIGHT
.type _VP_COL_HHEIGHT,%object
.size _VP_COL_HHEIGHT,4
_VP_COL_HHEIGHT: .long 0
.global _VP_COL_X_PLUS_HWIDTH
.type _VP_COL_X_PLUS_HWIDTH,%object
.size _VP_COL_X_PLUS_HWIDTH,4
_VP_COL_X_PLUS_HWIDTH: .long 0
.global _VP_COL_Y_PLUS_HHEIGHT
.type _VP_COL_Y_PLUS_HHEIGHT,%object
.size _VP_COL_Y_PLUS_HHEIGHT,4
_VP_COL_Y_PLUS_HHEIGHT: .long 0

196
misc/dreamcast/DrawTexturedQuads.S
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@ -1,7 +1,7 @@
!r0 = prefetch address !r0 = clip flags
!r1 = GPU VERT command !r1 = GPU command
!r2 = GPU EOS command !r2 = temp
!r3 = colour !r3 = prefetch address
!r4 = src pointer ARG !r4 = src pointer ARG
!r5 = dst pointer ARG !r5 = dst pointer ARG
!r6 = quads count ARG !r6 = quads count ARG
@ -10,119 +10,131 @@
!fr5 = y !fr5 = y
!fr6 = z !fr6 = z
!fr7 = w !fr7 = w
!fr9 = ? !fr8 = c
!fr10 = u !fr9 = u
!fr11 = v !fr10 = v
!fr11 = saved fr0 (for viewport transform)
!fv4 = XYZW !fv4 = XYZW
.globl _DrawTexturedQuads #include "ViewportTransform.S"
.global _DrawTexturedQuads
.align 4 .align 4
.type _DrawTexturedQuads,%function .type _DrawTexturedQuads,%function
_DrawTexturedQuads: _DrawTexturedQuads:
! Setup ! Setup
mov.l CMD_TEX_VERT, r1 ! r1 = GPU VERT command mov r4,r3 ! r3 = src
mov.l CMD_TEX_EOS, r2 ! r2 = GPU EOS command add #-32, r5 ! r5 -= sizeof(VERTEX)
mov r4,r0 ! r0 = src fmov fr0,fr11 ! fr11 = saved fr0
add #-32, r5 ! r5 -= sizeof(VERTEX) nop ! loop align
.TRANSFORM_QUAD: .TRANSFORM_QUAD:
! TRANSFORM VERTEX 1 mov.l CMD_TEX_VERT, r1 ! r1 = GPU VERT command
add #24, r0 ! r0 += VERTEX_STRIDE
add #64, r5 ! r5 += 2 * sizeof(VERTEX)
pref @r0 ! PREFETCH r0 (next vertex)
fmov @r4+, fr4 ! fr4 = src->x
fmov @r4+, fr5 ! fr5 = src->y
fmov @r4+, fr6 ! fr6 = src->z
fldi1 fr7 ! fr7 = 1.0
ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7)
mov.l @r4+,r3 ! r3 = src->color ! TRANSFORM VERTEX 1
fmov @r4+,fr10! fr10 = src->u add #24, r3 ! r3 += VERTEX_STRIDE
fmov @r4+,fr11! fr11 = src->v add #64, r5 ! r5 += 2 * sizeof(VERTEX)
fmov.s fr7,@-r5 ! dst->w = fr7 pref @r3 ! PREFETCH r3 (next vertex)
mov.l r3,@-r5 ! dst->bgra = r3 fmov @r4+, fr4 ! X = src->x
fmov.s fr11,@-r5 ! dst->v = fr11 fmov @r4+, fr5 ! Y = src->y
fmov.s fr10,@-r5 ! dst->u = fr10 fmov @r4+, fr6 ! Z = src->z
fmov.s fr6,@-r5 ! dst->z = fr6 fldi1 fr7 ! W = 1.0
fmov.s fr5,@-r5 ! dst->y = fr5 ftrv xmtrx, fv4 ! TRANSFORM(XYZW)
fmov.s fr4,@-r5 ! dst->x = fr4 ! OUTPUT + CLIPFLAGS VERTEX 1
mov.l r1,@-r5 ! dst->flags = CMD_VERT fmov @r4+,fr8 ! C = src->color
fmov @r4+,fr9 ! U = src->u
fmov @r4+,fr10! V = src->v
ProcessVertex1
! TRANSFORM VERTEX 2 ! TRANSFORM VERTEX 2
add #24, r0 ! r0 += VERTEX_STRIDE add #24, r3 ! r3 += VERTEX_STRIDE
add #64, r5 ! r5 += 2 * sizeof(VERTEX) add #64, r5 ! r5 += 2 * sizeof(VERTEX)
pref @r0 ! PREFETCH r0 (next vertex) pref @r3 ! PREFETCH r3 (next vertex)
fmov @r4+, fr4 ! fr4 = src->x fmov @r4+, fr4 ! X = src->x
fmov @r4+, fr5 ! fr5 = src->y fmov @r4+, fr5 ! Y = src->y
fmov @r4+, fr6 ! fr6 = src->z fmov @r4+, fr6 ! Z = src->z
fldi1 fr7 ! fr7 = 1.0 fldi1 fr7 ! W = 1.0
ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7) ftrv xmtrx, fv4 ! TRANSFORM(XYZW)
! OUTPUT + CLIPFLAGS VERTEX 2
mov.l @r4+,r3 ! r3 = src->color fmov @r4+,fr8 ! C = src->color
fmov @r4+,fr10! fr10 = src->u fmov @r4+,fr9 ! U = src->u
fmov @r4+,fr11! fr11 = src->v fmov @r4+,fr10! V = src->v
fmov.s fr7,@-r5 ! dst->w = fr7 ProcessVertex2
mov.l r3,@-r5 ! dst->bgra = r3
fmov.s fr11,@-r5 ! dst->v = fr11
fmov.s fr10,@-r5 ! dst->u = fr10
fmov.s fr6,@-r5 ! dst->z = fr6
fmov.s fr5,@-r5 ! dst->y = fr5
fmov.s fr4,@-r5 ! dst->x = fr4
mov.l r1,@-r5 ! dst->flags = CMD_VERT
! TRANSFORM VERTEX 3 ! TRANSFORM VERTEX 3
add #24, r0 ! r0 += VERTEX_STRIDE add #24, r3 ! r3 += VERTEX_STRIDE
add #64, r5 ! r5 += 2 * sizeof(VERTEX) add #64, r5 ! r5 += 2 * sizeof(VERTEX)
pref @r0 ! PREFETCH r0 (next vertex) pref @r3 ! PREFETCH r3 (next vertex)
fmov @r4+, fr4 ! fr4 = src->x fmov @r4+, fr4 ! X = src->x
fmov @r4+, fr5 ! fr5 = src->y fmov @r4+, fr5 ! Y = src->y
fmov @r4+, fr6 ! fr6 = src->z fmov @r4+, fr6 ! Z = src->z
fldi1 fr7 ! fr7 = 1.0 fldi1 fr7 ! W = 1.0
ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7) ftrv xmtrx, fv4 ! TRANSFORM(XYZW)
! OUTPUT + CLIPFLAGS VERTEX 3
mov.l @r4+,r3 ! r3 = src->color fmov @r4+,fr8 ! C = src->color
fmov @r4+,fr10! fr10 = src->u fmov @r4+,fr9 ! U = src->u
fmov @r4+,fr11! fr11 = src->v fmov @r4+,fr10! V = src->v
fmov.s fr7,@-r5 ! dst->w = fr7 ProcessVertex3
mov.l r3,@-r5 ! dst->bgra = r3
fmov.s fr11,@-r5 ! dst->v = fr11
fmov.s fr10,@-r5 ! dst->u = fr10
fmov.s fr6,@-r5 ! dst->z = fr6
fmov.s fr5,@-r5 ! dst->y = fr5
fmov.s fr4,@-r5 ! dst->x = fr4
mov.l r1,@-r5 ! dst->flags = CMD_VERT
! TRANSFORM VERTEX 4 ! TRANSFORM VERTEX 4
add #24, r0 ! r0 += VERTEX_STRIDE add #24, r3 ! r3 += VERTEX_STRIDE
add #64, r5 ! r5 += 2 * sizeof(VERTEX) add #64, r5 ! r5 += 2 * sizeof(VERTEX)
pref @r0 ! PREFETCH r0 (next vertex) pref @r3 ! PREFETCH r3 (next vertex)
fmov @r4+, fr4 ! fr4 = src->x fmov @r4+, fr4 ! X = src->x
fmov @r4+, fr5 ! fr5 = src->y fmov @r4+, fr5 ! Y = src->y
fmov @r4+, fr6 ! fr6 = src->z fmov @r4+, fr6 ! Z = src->z
fldi1 fr7 ! fr7 = 1.0 fldi1 fr7 ! W = 1.0
ftrv xmtrx, fv4 ! TRANSFORM(fr4..fr7) ftrv xmtrx, fv4 ! TRANSFORM(XYZW)
! OUTPUT + CLIPFLAGS VERTEX 4
fmov @r4+,fr8 ! C = src->color
fmov @r4+,fr9 ! U = src->u
fmov @r4+,fr10! V = src->v
ProcessVertex4 CMD_TEX_EOS
mov.l @r4+,r3 ! r3 = src->color ! CLIPFLAGS TESTING
fmov @r4+,fr10! fr10 = src->u cmp/eq #0,r0 ! T = r0 == 0 (all points invisible)
fmov @r4+,fr11! fr11 = src->v bt/s .NO_POINTS_VISIBLE ! if T goto NO_POINTS_VISIBLE
fmov.s fr7,@-r5 ! dst->w = fr7 nop
mov.l r3,@-r5 ! dst->bgra = r3 bra .SOME_POINTS_VISIBLE
fmov.s fr11,@-r5 ! dst->v = fr11 nop
fmov.s fr10,@-r5 ! dst->u = fr10
fmov.s fr6,@-r5 ! dst->z = fr6
fmov.s fr5,@-r5 ! dst->y = fr5
fmov.s fr4,@-r5 ! dst->x = fr4
mov.l r2,@-r5 ! dst->flags = CMD_EOS
dt r6 ! r6--; T = 1 if r6 == 0, else 0 .NO_POINTS_VISIBLE:
bf .TRANSFORM_QUAD ! if T == 0 then goto TRANSFORM_QUAD bra .LOOP_END ! jump to loop end after executing instruction in delay slot
add #-128, r5 ! r5 -= 4 * sizeof(VERTEX), move back to prior quad, so that this invisible quad gets overwritten in next iteration
.SOME_POINTS_VISIBLE:
.LOOP_END:
dt r6 ! r6--; T = r6 == 0
bf .TRANSFORM_QUAD ! if !T then goto TRANSFORM_QUAD
nop nop
rts ! return add #32, r5 ! r5 += sizeof(VERTEX)
nop mov r5,r0 ! r0 = r5
rts ! return after executing instruction in delay slot
fmov fr11,fr0 ! fr0 = original fr0
.align 2 .align 2
CMD_TEX_VERT: .long 0xe0000000 CMD_TEX_VERT: .long 0xe0000000
CMD_TEX_EOS: .long 0xf0000000 CMD_TEX_EOS: .long 0xf0000000
.global _VP_TEX_HWIDTH
.type _VP_TEX_HWIDTH,%object
.size _VP_TEX_HWIDTH,4
_VP_TEX_HWIDTH: .long 0
.global _VP_TEX_HHEIGHT
.type _VP_TEX_HHEIGHT,%object
.size _VP_TEX_HHEIGHT,4
_VP_TEX_HHEIGHT: .long 0
.global _VP_TEX_X_PLUS_HWIDTH
.type _VP_TEX_X_PLUS_HWIDTH,%object
.size _VP_TEX_X_PLUS_HWIDTH,4
_VP_TEX_X_PLUS_HWIDTH: .long 0
.global _VP_TEX_Y_PLUS_HHEIGHT
.type _VP_TEX_Y_PLUS_HHEIGHT,%object
.size _VP_TEX_Y_PLUS_HHEIGHT,4
_VP_TEX_Y_PLUS_HHEIGHT: .long 0

74
misc/dreamcast/ViewportTransform.S
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@ -1,3 +1,77 @@
! =========================================================
! ========================= VERTEX OUTPUT =================
! =========================================================
! To take advantage of SH4 dual instruction processing, interleave
! the clipflag calculation and vertex output instructions
.macro ProcessVertex1
fmov.s fr7,@-r5 ! dst->w = W
fmov.s fr8,@-r5 ! dst->c = C
fneg fr7 ! W = -W
fmov.s fr10,@-r5 ! dst->v = V
fcmp/gt fr7,fr6 ! T = Z > W (i.e. Z > -W)
fmov.s fr9,@-r5 ! dst->u = U
movt r0 ! CLIPFLAGS = T
fmov.s fr6,@-r5 ! dst->z = Z
fmov.s fr5,@-r5 ! dst->y = Y
fmov.s fr4,@-r5 ! dst->x = X
mov.l r1,@-r5 ! dst->flags = CMD_VERT
.endm
.macro ProcessVertex2
fmov.s fr7,@-r5 ! dst->w = W
fmov.s fr8,@-r5 ! dst->c = C
fneg fr7 ! W = -W
fmov.s fr10,@-r5 ! dst->v = V
fcmp/gt fr7,fr6 ! T = Z > W (i.e. Z > -W)
fmov.s fr9,@-r5 ! dst->u = U
movt r2 ! tmp = T
fmov.s fr6,@-r5 ! dst->z = Z
add r2,r2 ! tmp = tmp + tmp
fmov.s fr5,@-r5 ! dst->y = Y
or r2,r0 ! CLIPFLAGS |= tmp (T << 1)
fmov.s fr4,@-r5 ! dst->x = X
mov.l r1,@-r5 ! dst->flags = CMD_VERT
.endm
.macro ProcessVertex3
fmov.s fr7,@-r5 ! dst->w = W
fmov.s fr8,@-r5 ! dst->c = C
fneg fr7 ! W = -W
fmov.s fr10,@-r5 ! dst->v = V
fcmp/gt fr7,fr6 ! T = Z > W (i.e. Z > -W)
fmov.s fr9,@-r5 ! dst->u = U
movt r2 ! tmp = T
fmov.s fr6,@-r5 ! dst->z = Z
fmov.s fr5,@-r5 ! dst->y = Y
shll2 r2 ! tmp = tmp << 2
fmov.s fr4,@-r5 ! dst->x = X
or r2,r0 ! CLIPFLAGS |= tmp (T << 2)
mov.l r1,@-r5 ! dst->flags = CMD_VERT
.endm
.macro ProcessVertex4 eos_addr
fmov.s fr7,@-r5 ! dst->w = W
fmov.s fr8,@-r5 ! dst->c = C
fneg fr7 ! W = -W
fmov.s fr10,@-r5 ! dst->v = V
fcmp/gt fr7,fr6 ! T = Z > W (i.e. Z > -W)
fmov.s fr9,@-r5 ! dst->u = U
movt r2 ! tmp = T
fmov.s fr6,@-r5 ! dst->z = Z
shll2 r2 ! tmp = tmp << 2
fmov.s fr5,@-r5 ! dst->y = Y
add r2,r2 ! tmp = (tmp << 2) + (tmp << 2)
fmov.s fr4,@-r5 ! dst->x = X
mov.l \eos_addr, r1 ! r1 = GPU EOS command
or r2,r0 ! CLIPFLAGS |= tmp (T << 3)
or r0,r1 ! r1 |= CLIPFLAGS
mov.l r1,@-r5 ! dst->flags = GPU EOS | CLIPFLAGS
.endm
! =========================================================
! ====================== VIEWPORT TRANSFORM ===============
! =========================================================
!r2 = return addr !r2 = return addr
!r0 = temp !r0 = temp
!r5 = dst pointer !r5 = dst pointer

36
src/Graphics_Dreamcast.c
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@ -467,19 +467,34 @@ cc_bool Gfx_WarnIfNecessary(void) {
*#########################################################################################################################*/ *#########################################################################################################################*/
#define VB_PTR gfx_vertices #define VB_PTR gfx_vertices
static const void* VERTEX_PTR; static const void* VERTEX_PTR;
extern void apply_poly_header(PolyHeader* header, PolyList* activePolyList);
extern void DrawColouredQuads(const void* src, Vertex* dst, int numQuads); extern Vertex* DrawColouredQuads(const void* src, Vertex* dst, int numQuads);
extern void DrawTexturedQuads(const void* src, Vertex* dst, int numQuads); extern Vertex* DrawTexturedQuads(const void* src, Vertex* dst, int numQuads);
void DrawQuads(int count) { void DrawQuads(int count) {
if (!count) return; if (!count) return;
Vertex* start = submitVertices(count); PolyList* output = _glActivePolyList();
AlignedVectorHeader* hdr = &output->vector.hdr;
uint32_t header_required = (hdr->size == 0) || STATE_DIRTY;
// Reserve room for the vertices and header
Vertex* beg = aligned_vector_reserve(&output->vector, hdr->size + (header_required) + count);
if (header_required) {
apply_poly_header((PolyHeader*)beg, output);
STATE_DIRTY = GL_FALSE;
beg++;
hdr->size += 1;
}
Vertex* end;
if (TEXTURES_ENABLED) { if (TEXTURES_ENABLED) {
DrawTexturedQuads(VERTEX_PTR, start, count >> 2); end = DrawTexturedQuads(VERTEX_PTR, beg, count >> 2);
} else { } else {
DrawColouredQuads(VERTEX_PTR, start, count >> 2); end = DrawColouredQuads(VERTEX_PTR, beg, count >> 2);
} }
hdr->size += (end - beg);
} }
void Gfx_SetVertexFormat(VertexFormat fmt) { void Gfx_SetVertexFormat(VertexFormat fmt) {
@ -569,6 +584,11 @@ void Gfx_OnWindowResize(void) {
Gfx_SetViewport(0, 0, Game.Width, Game.Height); Gfx_SetViewport(0, 0, Game.Width, Game.Height);
} }
extern float VP_COL_HWIDTH, VP_TEX_HWIDTH;
extern float VP_COL_HHEIGHT, VP_TEX_HHEIGHT;
extern float VP_COL_X_PLUS_HWIDTH, VP_TEX_X_PLUS_HWIDTH;
extern float VP_COL_Y_PLUS_HHEIGHT, VP_TEX_Y_PLUS_HHEIGHT;
void Gfx_SetViewport(int x, int y, int w, int h) { void Gfx_SetViewport(int x, int y, int w, int h) {
if (x == 0 && y == 0 && w == Game.Width && h == Game.Height) { if (x == 0 && y == 0 && w == Game.Width && h == Game.Height) {
glDisable(GL_SCISSOR_TEST); glDisable(GL_SCISSOR_TEST);
@ -578,5 +598,11 @@ void Gfx_SetViewport(int x, int y, int w, int h) {
glViewport(x, y, w, h); glViewport(x, y, w, h);
glScissor (x, y, w, h); glScissor (x, y, w, h);
VP_COL_HWIDTH = VP_TEX_HWIDTH = w * 0.5f;
VP_COL_HHEIGHT = VP_TEX_HHEIGHT = h * -0.5f;
VP_COL_X_PLUS_HWIDTH = VP_TEX_X_PLUS_HWIDTH = x + w * 0.5f;
VP_COL_Y_PLUS_HHEIGHT = VP_TEX_Y_PLUS_HHEIGHT = y + h * 0.5f;
} }
#endif #endif

5
third_party/gldc/src/aligned_vector.h vendored
View File

@ -83,13 +83,12 @@ AV_FORCE_INLINE void* aligned_vector_at(const AlignedVector* vector, const uint3
AV_FORCE_INLINE void* aligned_vector_reserve(AlignedVector* vector, uint32_t element_count) { AV_FORCE_INLINE void* aligned_vector_reserve(AlignedVector* vector, uint32_t element_count) {
AlignedVectorHeader* hdr = &vector->hdr; AlignedVectorHeader* hdr = &vector->hdr;
uint32_t original_byte_size = (hdr->size * AV_ELEMENT_SIZE);
if(element_count < hdr->capacity) { if(element_count < hdr->capacity) {
return aligned_vector_at(vector, element_count); return vector->data + original_byte_size;
} }
uint32_t original_byte_size = (hdr->size * AV_ELEMENT_SIZE);
/* We overallocate so that we don't make small allocations during push backs */ /* We overallocate so that we don't make small allocations during push backs */
element_count = ROUND_TO_CHUNK_SIZE(element_count); element_count = ROUND_TO_CHUNK_SIZE(element_count);

27
third_party/gldc/src/draw.c vendored
View File

@ -1,28 +1,3 @@
#include <stdint.h> #include <stdint.h>
#include "private.h" #include "private.h"
#include "platform.h" #include "platform.h"
extern void apply_poly_header(PolyHeader* header, PolyList* activePolyList);
GL_FORCE_INLINE Vertex* submitVertices(GLuint vertexCount) {
TRACE();
PolyList* output = _glActivePolyList();
uint32_t header_offset;
uint32_t start_offset;
uint32_t vector_size = aligned_vector_size(&output->vector);
GLboolean header_required = (vector_size == 0) || STATE_DIRTY;
header_offset = vector_size;
start_offset = header_offset + (header_required ? 1 : 0);
/* Make room for the vertices and header */
aligned_vector_extend(&output->vector, (header_required) + vertexCount);
gl_assert(header_offset < aligned_vector_size(&output->vector));
if (header_required) {
apply_poly_header(aligned_vector_at(&output->vector, header_offset), output);
STATE_DIRTY = GL_FALSE;
}
return aligned_vector_at(&output->vector, start_offset);
}

15
third_party/gldc/src/sh4.c vendored
View File

@ -465,7 +465,7 @@ void SceneListSubmit(Vertex* v3, int n) {
for(int i = 0; i < n; ++i, ++v3) { for(int i = 0; i < n; ++i, ++v3) {
PREFETCH(v3 + 1); PREFETCH(v3 + 1);
switch(v3->flags) { switch(v3->flags & 0xFF000000) {
case GPU_CMD_VERTEX_EOL: case GPU_CMD_VERTEX_EOL:
break; break;
case GPU_CMD_VERTEX: case GPU_CMD_VERTEX:
@ -480,12 +480,8 @@ void SceneListSubmit(Vertex* v3, int n) {
Vertex* const v1 = v3 - 2; Vertex* const v1 = v3 - 2;
Vertex* const v2 = v3 - 1; Vertex* const v2 = v3 - 1;
visible_mask = ( visible_mask = v3->flags & 0xFF;
(v0->xyz[2] > -v0->w) << 0 | v3->flags &= ~0xFF;
(v1->xyz[2] > -v1->w) << 1 |
(v2->xyz[2] > -v2->w) << 2 |
(v3->xyz[2] > -v3->w) << 3
);
// Stats gathering found that when testing a 64x64x64 sized world, at most // Stats gathering found that when testing a 64x64x64 sized world, at most
// ~400-500 triangles needed clipping // ~400-500 triangles needed clipping
@ -505,7 +501,7 @@ void SceneListSubmit(Vertex* v3, int n) {
_glPerspectiveDivideVertex(v2); _glPerspectiveDivideVertex(v2);
_glPushHeaderOrVertex(v2); _glPushHeaderOrVertex(v2);
_glPerspectiveDivideVertex(v0); _glPerspectiveDivideVertex(v0);
_glPushHeaderOrVertex(v0); _glPushHeaderOrVertex(v0);
@ -514,9 +510,6 @@ void SceneListSubmit(Vertex* v3, int n) {
} }
break; break;
case 0: // No vertices visible
break;
default: // Some vertices visible default: // Some vertices visible
SubmitClipped(v0, v1, v2, v3, visible_mask); SubmitClipped(v0, v1, v2, v3, visible_mask);
break; break;