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segment .rdata, align=16
correct dq 0000800000008000h, 0000800000008000h
round dq 0000200000002000h, 0000200000002000h
round1 dq 0000020000000200h, 0000020000000200h
round2 dq 0002000000020000h, 0002000000020000h
segment .text
%include "a_triblt.inc"
extern _kVDCubicInterpTableFX14_075_MMX
;--------------------------------------------------------------------------
global _vdasm_triblt_span_bicubic_mip_linear_sse2
_vdasm_triblt_span_bicubic_mip_linear_sse2:
;parameters
%define .p_texinfo 20
;aligned frame
%define .af_vtemp0 0
%define .af_mipbase 16
%define .af_prevesp 20
%define .afsize 24
push ebp
lea ebp, [esp-12]
push edi
push esi
push ebx
sub esp, .afsize
and esp, -16
mov [esp + .af_prevesp], ebp
mov ebx, [ebp + .p_texinfo]
mov ebp, [ebx + texinfo.dst]
mov esi, [ebx + texinfo.w]
shl esi, 2
add ebp,esi
neg esi
mov edi, [ebx + texinfo.src]
mov [esp + .af_mipbase], ebx
pxor xmm7, xmm7
.xloop:
;registers:
; eax base texel address
; ebx first mip info
; ecx horizontal filter
; edx vertical filter
; esi horizontal count
; edi mipspan
; ebp destination
%macro .SETUPADDR 1
;compute mipmap index and UV
movd xmm0, [edi + mipspan.u]
movd xmm1, [edi + mipspan.v]
punpckldq xmm0, xmm1
mov ebx, [edi + mipspan.lambda]
shr ebx, 4
and ebx, byte -16
add ebx, mipmap_size*%1
movd xmm2, ebx
add ebx, [esp + .af_mipbase]
psrlq xmm2, 4
psrad xmm0, xmm2
paddd xmm0, [correct]
pshufd xmm1, xmm0, 01010101b
;compute horizontal filters
movd ecx, xmm0
shr ecx, 4
and ecx, 0ff0h
add ecx, _kVDCubicInterpTableFX14_075_MMX
;compute vertical filter
movd edx, xmm1
and edx, 0ff00h
shr edx, 4
add edx, _kVDCubicInterpTableFX14_075_MMX
;compute texel address
movd xmm1, [ebx + mipmap.uvmul]
psrld xmm0, 16
packssdw xmm0, xmm0
pmaddwd xmm0, xmm1
movd eax, xmm0
add eax, [ebx + mipmap.bits]
%endmacro
%macro .HCUBIC 4
movd %1, dword [eax]
movd %3, dword [eax+4]
movd %2, dword [eax+8]
movd %4, dword [eax+12]
punpcklbw %1, %3
punpcklbw %2, %4
punpcklbw %1, xmm7
punpcklbw %2, xmm7
movdqa %3, [ecx]
pshufd %4, %3, 11101110b
pshufd %3, %3, 01000100b
pmaddwd %1, %3
pmaddwd %2, %4
paddd %1, %2
%endmacro
%macro .VCUBIC 1
.HCUBIC xmm0, xmm4, xmm5, xmm6
add eax, %1
.HCUBIC xmm1, xmm4, xmm5, xmm6
add eax, %1
.HCUBIC xmm2, xmm4, xmm5, xmm6
add eax, %1
.HCUBIC xmm3, xmm4, xmm5, xmm6
movq xmm4, [round1]
paddd xmm0, xmm4
paddd xmm1, xmm4
psrad xmm0, 10
paddd xmm2, xmm4
psrad xmm1, 10
packssdw xmm0, xmm0
paddd xmm3, xmm4
psrad xmm2, 10
packssdw xmm1, xmm1
movdqa xmm5, [edx]
psrad xmm3, 10
punpcklwd xmm0, xmm1
packssdw xmm2, xmm2
packssdw xmm3, xmm3
pshufd xmm4, xmm5, 01000100b
pmaddwd xmm0, xmm4
punpcklwd xmm2, xmm3
pshufd xmm5, xmm5, 11101110b
pmaddwd xmm2, xmm5
paddd xmm0, xmm2
paddd xmm0, [round2]
psrad xmm0, 18
packssdw xmm0, xmm0
%endmacro
;fetch mipmap 1
.SETUPADDR 0
.VCUBIC [ebx+mipmap.pitch]
movq [esp + .af_vtemp0], xmm0
;fetch mipmap 2
.SETUPADDR 1
.VCUBIC [ebx+mipmap.pitch]
;blend mips
movq xmm1, [esp + .af_vtemp0]
psubw xmm0, xmm1
movd xmm3, [edi+mipspan.lambda]
pshuflw xmm3, xmm3, 0
psllw xmm3, 8
psrlq xmm3, 1
paddw xmm0, xmm0
pmulhw xmm0, xmm3
paddw xmm0, xmm1
packuswb xmm0, xmm0
movd dword [ebp+esi], xmm0
add edi, mipspan_size
add esi,4
jnc .xloop
mov esp, [esp + .af_prevesp]
pop ebx
pop esi
pop edi
pop ebp
ret
end
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