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m2sort.cc
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#include "cc.h"
//;/*
//.486
//.model flat
//LOCALS
//data32 SEGMENT PAGE
//.data
static uint32_t CurPolygonCounter;
//align 32
static uint32_t SortBuffer[1024];
static uint32_t pPolygonDistanceBuffer1;
static uint32_t pPolygonDistanceBuffer2;
static uint32_t iNumPolygons;
const static float fNum_0 = 0;
#include "m2struct.inc.h"
//ends
//.code
extern "C" uint32_t MV2AddPolygonsASM(uint32_t _pPolygonDistanceBuffer, uint32_t _ppPolygon3Edge, uint32_t _iNumAddPolygons) {
realnum fpu_reg10, fpu_reg11, fpu_reg12, fpu_reg13;
uint32_t eax, edx, ecx, edi, ebx, esi, ebp;
uint32_t stack_var00, stack_var01;
CurPolygonCounter = ( 0 );
edi = _pPolygonDistanceBuffer;
esi = _ppPolygon3Edge;
ebp = _iNumAddPolygons;
if ((ebp & ebp) == 0) goto MV2AddPolygonsASM_NoAddPolygons;
MV2AddPolygonsASM_PolygonLoop:
edx = ( *((uint32_t *)(esi)) );
ecx = ( ((CMV2Polygon *)edx)->CMV2Polygon__m_iFlag );
ecx = ecx & ( 1 );
if (( (int32_t)ecx ) == 0) goto MV2AddPolygonsASM_OneSided;
eax = ( ((CMV2Polygon *)edx)->CMV2Polygon__m_pDot1 );
ebx = ( ((CMV2Polygon *)edx)->CMV2Polygon__m_pDot2 );
ecx = ( ((CMV2Polygon *)edx)->CMV2Polygon__m_pDot3 );
eax = ( ((CMV2Dot3D *)eax)->CMV2Dot3D__m_pPos );
ebx = ( ((CMV2Dot3D *)ebx)->CMV2Dot3D__m_pPos );
ecx = ( ((CMV2Dot3D *)ecx)->CMV2Dot3D__m_pPos );
fpu_reg10 = ( ((CMV2Dot3DPos *)ebx)->CMV2Dot3DPos__m_fScreenX );
fpu_reg10 = fpu_reg10 - ( ((CMV2Dot3DPos *)eax)->CMV2Dot3DPos__m_fScreenX );
fpu_reg11 = ( ((CMV2Dot3DPos *)ebx)->CMV2Dot3DPos__m_fScreenY );
fpu_reg11 = fpu_reg11 - ( ((CMV2Dot3DPos *)eax)->CMV2Dot3DPos__m_fScreenY );
fpu_reg12 = ( ((CMV2Dot3DPos *)ecx)->CMV2Dot3DPos__m_fScreenX );
fpu_reg12 = fpu_reg12 - ( ((CMV2Dot3DPos *)eax)->CMV2Dot3DPos__m_fScreenX );
fpu_reg13 = ( ((CMV2Dot3DPos *)ecx)->CMV2Dot3DPos__m_fScreenY );
fpu_reg13 = fpu_reg13 - ( ((CMV2Dot3DPos *)eax)->CMV2Dot3DPos__m_fScreenY );
// st0 = b.y = p3.y - p1.y
// st1 = b.x = p3.x - p1.x
// st2 = a.y = p2.y - p1.y
// st3 = a.x = p2.x - p1.x
fpu_reg10 = fpu_reg10 * fpu_reg13;
fpu_reg11 = fpu_reg11 * fpu_reg12;
fpu_reg10 = fpu_reg11 - fpu_reg10; // a.y*b.x - a.x*b.y > 0
stack_var00 = eax;
// tasm 3.0 bug (= fstsw)
if (fpu_reg10 > fNum_0) goto MV2AddPolygonsASM_notClockwise;
eax = stack_var00;
goto MV2AddPolygonsASM_Clockwise;
MV2AddPolygonsASM_notClockwise:
eax = stack_var00;
stack_var00 = ebx;
stack_var01 = eax;
ebx = ( ((CMV2Polygon *)edx)->CMV2Polygon__m_pDot3 );
eax = ( ((CMV2Polygon *)edx)->CMV2Polygon__m_pDot2 );
((CMV2Polygon *)edx)->CMV2Polygon__m_pDot2 = ebx;
((CMV2Polygon *)edx)->CMV2Polygon__m_pDot3 = eax;
eax = stack_var01;
ebx = stack_var00;
MV2AddPolygonsASM_Clockwise:
goto MV2AddPolygonsASM_TwoSided;
MV2AddPolygonsASM_OneSided:
eax = ( ((CMV2Polygon *)edx)->CMV2Polygon__m_pDot1 );
ebx = ( ((CMV2Polygon *)edx)->CMV2Polygon__m_pDot2 );
ecx = ( ((CMV2Polygon *)edx)->CMV2Polygon__m_pDot3 );
eax = ( ((CMV2Dot3D *)eax)->CMV2Dot3D__m_pPos );
ebx = ( ((CMV2Dot3D *)ebx)->CMV2Dot3D__m_pPos );
ecx = ( ((CMV2Dot3D *)ecx)->CMV2Dot3D__m_pPos );
fpu_reg10 = ( ((CMV2Dot3DPos *)ebx)->CMV2Dot3DPos__m_fScreenX );
fpu_reg10 = fpu_reg10 - ( ((CMV2Dot3DPos *)eax)->CMV2Dot3DPos__m_fScreenX );
fpu_reg11 = ( ((CMV2Dot3DPos *)ebx)->CMV2Dot3DPos__m_fScreenY );
fpu_reg11 = fpu_reg11 - ( ((CMV2Dot3DPos *)eax)->CMV2Dot3DPos__m_fScreenY );
fpu_reg12 = ( ((CMV2Dot3DPos *)ecx)->CMV2Dot3DPos__m_fScreenX );
fpu_reg12 = fpu_reg12 - ( ((CMV2Dot3DPos *)eax)->CMV2Dot3DPos__m_fScreenX );
fpu_reg13 = ( ((CMV2Dot3DPos *)ecx)->CMV2Dot3DPos__m_fScreenY );
fpu_reg13 = fpu_reg13 - ( ((CMV2Dot3DPos *)eax)->CMV2Dot3DPos__m_fScreenY );
// st0 = b.y = p3.y - p1.y
// st1 = b.x = p3.x - p1.x
// st2 = a.y = p2.y - p1.y
// st3 = a.x = p2.x - p1.x
fpu_reg10 = fpu_reg10 * fpu_reg13;
fpu_reg11 = fpu_reg11 * fpu_reg12;
fpu_reg10 = fpu_reg11 - fpu_reg10; // a.y*b.x - a.x*b.y > 0
stack_var00 = eax;
// tasm 3.0 bug (= fstsw)
if (fpu_reg10 <= fNum_0) goto MV2AddPolygonsASM_notPolygonNotVisible;
eax = stack_var00;
goto MV2AddPolygonsASM_PolygonNotVisible;
MV2AddPolygonsASM_notPolygonNotVisible:
eax = stack_var00;
MV2AddPolygonsASM_TwoSided:
fpu_reg10 = ( ((CMV2Dot3DPos *)eax)->CMV2Dot3DPos__m_TransfPos__m_fZ );
fpu_reg10 = fpu_reg10 + ( ((CMV2Dot3DPos *)ebx)->CMV2Dot3DPos__m_TransfPos__m_fZ );
//st0 = Dot1Z + Dot2Z
fpu_reg11 = ( ((CMV2Dot3DPos *)ecx)->CMV2Dot3DPos__m_TransfPos__m_fZ );
//st0 = Dot3Z, st1 = Dot1Z + Dot2Z
fpu_reg10 = fpu_reg10 + fpu_reg11;
//st0 = Dot1Z + Dot2Z + Dot3Z
fpu_reg10 = fpu_reg10 + ( ((CMV2Polygon *)edx)->CMV2Polygon__m_fAddDistance );
fpu_reg10 = -fpu_reg10;
//st0 = -(Dot1Z + Dot2Z + Dot3Z)
((CMV2PolygonDistance *)edi)->CMV2PolygonDistance__m_fAverageDistance = fpu_reg10;
// not ds:[edi].CMV2PolygonDistance__m_fAverageDistance
((CMV2PolygonDistance *)edi)->CMV2PolygonDistance__m_pPolygon = edx;
edi = edi + ( 8 );
CurPolygonCounter = CurPolygonCounter + 1;
MV2AddPolygonsASM_PolygonNotVisible:
esi = esi + ( 4 );
ebp = ( (int32_t)ebp ) - 1;
if (( (int32_t)ebp ) != 0) goto MV2AddPolygonsASM_PolygonLoop;
MV2AddPolygonsASM_NoAddPolygons:
eax = CurPolygonCounter;
return eax;
}
extern "C" void MV2SortRenderBufferASM(uint32_t _pPolygonDistanceBuffer1, uint32_t _pPolygonDistanceBuffer2, uint32_t _iNumPolygons) {
uint32_t eax, edx, ecx, edi, ebx, esi, ebp;
//push es
eax = _pPolygonDistanceBuffer1;
ebx = _pPolygonDistanceBuffer2;
ecx = _iNumPolygons;
pPolygonDistanceBuffer1 = eax;
pPolygonDistanceBuffer2 = ebx;
iNumPolygons = ecx;
//push ds
//pop es
#if 0
//;===> <===
//;===> Sort Pass 1 <===
//;===> <===
//
// mov edi,offset SortBuffer
// ;cld
// mov ecx,256
// xor eax,eax
// rep stosd
//
// xor ebx,ebx
// mov esi,pPolygonDistanceBuffer1
// mov ebp,iNumPolygons
//
//@@FrequencyLoop1:
// mov bl,ds:[esi]
// inc dword ptr ds:[4*ebx].SortBuffer
// add esi,8
//
// dec ebp
// jnz @@FrequencyLoop1
//
// xor edx,edx
// mov edi,255
// mov ebp,256
//
//@@InitPtrLoop1:
// mov ecx,ds:[4*edi].SortBuffer
// mov ds:[4*edi].SortBuffer,edx
// add edx,ecx
// dec edi ; mit ebp machbar, aber langsamer..
//
// dec ebp
// jnz @@InitPtrLoop1
//
//
// xor ebx,ebx
// mov esi,pPolygonDistanceBuffer1
// mov edi,pPolygonDistanceBuffer2
// mov ebp,iNumPolygons
//
//@@SortLoop1:
// mov ecx,ds:[esi]
// mov bl,cl
// mov eax,ds:[4*ebx].SortBuffer
// mov edx,ds:[esi + 4]
// mov ds:[edi + 8*eax],ecx
// mov ds:[edi + 8*eax + 4],edx
// inc dword ptr ds:[4*ebx].SortBuffer
//
// add esi,8
//
// dec ebp
// jnz @@SortLoop1
//
//;===> <===
//;===> Sort Pass 2 <===
//;===> <===
//
// mov edi,offset SortBuffer
// cld
// mov ecx,256
// xor eax,eax
// rep stosd
//
// xor ebx,ebx
// mov esi,pPolygonDistanceBuffer2
// mov ebp,iNumPolygons
//
//@@FrequencyLoop2:
// mov bl,ds:[esi + 1]
// inc dword ptr ds:[4*ebx].SortBuffer
// add esi,8
//
// dec ebp
// jnz @@FrequencyLoop2
//
//
// xor edx,edx
// mov edi,255
// mov ebp,256
//
//@@InitPtrLoop2:
// mov ecx,ds:[4*edi].SortBuffer
// mov ds:[4*edi].SortBuffer,edx
// add edx,ecx
// dec edi
//
// dec ebp
// jnz @@InitPtrLoop2
//
//
// xor ebx,ebx
// mov esi,pPolygonDistanceBuffer2
// mov edi,pPolygonDistanceBuffer1
// mov ebp,iNumPolygons
//
//@@SortLoop2:
// mov ecx,ds:[esi]
// mov bl,ch
// mov eax,ds:[4*ebx].SortBuffer
// mov edx,ds:[esi + 4]
// mov ds:[edi + 8*eax],ecx
// mov ds:[edi + 8*eax + 4],edx
// inc dword ptr ds:[4*ebx].SortBuffer
//
// add esi,8
//
// dec ebp
// jnz @@SortLoop2
#endif
//===> <===
//===> Sort Pass 3 <===
//===> <===
edi = ( (uint32_t)&(SortBuffer[0]) );
//cld
ecx = ( 256 );
eax = 0;
for (; ecx != 0; ecx--, edi+=4) *(uint32_t *)edi = eax;
ebx = 0;
esi = pPolygonDistanceBuffer1;
ebp = iNumPolygons;
MV2SortRenderBufferASM_FrequencyLoop3:
ebx = (ebx & 0xffffff00) | (uint8_t)(( ((uint8_t *)(esi))[2] ));
SortBuffer[ebx] = ( SortBuffer[ebx] ) + 1;
esi = esi + ( 8 );
ebp = ( (int32_t)ebp ) - 1;
if (( (int32_t)ebp ) != 0) goto MV2SortRenderBufferASM_FrequencyLoop3;
edx = 0;
edi = ( 255 );
ebp = ( 256 );
MV2SortRenderBufferASM_InitPtrLoop3:
ecx = ( SortBuffer[edi] );
SortBuffer[edi] = edx;
edx = edx + ecx;
edi = edi - 1;
ebp = ( (int32_t)ebp ) - 1;
if (( (int32_t)ebp ) != 0) goto MV2SortRenderBufferASM_InitPtrLoop3;
ebx = 0;
esi = pPolygonDistanceBuffer1;
edi = pPolygonDistanceBuffer2;
ebp = iNumPolygons;
MV2SortRenderBufferASM_SortLoop3:
ecx = ( *((uint32_t *)(esi)) );
ebx = (ebx & 0xffffff00) | (uint8_t)(( ((uint8_t *)(esi))[2] ));
eax = ( SortBuffer[ebx] );
edx = ( ((uint32_t *)(esi))[1] );
*((uint32_t *)(edi + eax * 8)) = ecx;
*((uint32_t *)(edi + eax * 8 + (4))) = edx;
SortBuffer[ebx] = ( SortBuffer[ebx] ) + 1;
esi = esi + ( 8 );
ebp = ( (int32_t)ebp ) - 1;
if (( (int32_t)ebp ) != 0) goto MV2SortRenderBufferASM_SortLoop3;
//===> <===
//===> Sort Pass 4 <===
//===> <===
edi = ( (uint32_t)&(SortBuffer[0]) );
//cld
ecx = ( 256 );
eax = 0;
for (; ecx != 0; ecx--, edi+=4) *(uint32_t *)edi = eax;
ebx = 0;
esi = pPolygonDistanceBuffer2;
ebp = iNumPolygons;
MV2SortRenderBufferASM_FrequencyLoop4:
ebx = (ebx & 0xffffff00) | (uint8_t)(( ((uint8_t *)(esi))[3] ));
SortBuffer[ebx] = ( SortBuffer[ebx] ) + 1;
esi = esi + ( 8 );
ebp = ( (int32_t)ebp ) - 1;
if (( (int32_t)ebp ) != 0) goto MV2SortRenderBufferASM_FrequencyLoop4;
edx = 0;
edi = ( 255 );
ebp = ( 256 );
MV2SortRenderBufferASM_InitPtrLoop4:
ecx = ( SortBuffer[edi] );
SortBuffer[edi] = edx;
edx = edx + ecx;
edi = edi - 1;
ebp = ( (int32_t)ebp ) - 1;
if (( (int32_t)ebp ) != 0) goto MV2SortRenderBufferASM_InitPtrLoop4;
ebx = 0;
esi = pPolygonDistanceBuffer2;
edi = pPolygonDistanceBuffer1;
ebp = iNumPolygons;
MV2SortRenderBufferASM_SortLoop4:
ecx = ( *((uint32_t *)(esi)) );
ebx = (ebx & 0xffffff00) | (uint8_t)(( ((uint8_t *)(esi))[3] ));
eax = ( SortBuffer[ebx] );
edx = ( ((uint32_t *)(esi))[1] );
ecx = ecx & ( 0x07fffffff ); // without sign bit (maybe wrong)
*((uint32_t *)(edi + eax * 8)) = ecx;
*((uint32_t *)(edi + eax * 8 + (4))) = edx;
SortBuffer[ebx] = ( SortBuffer[ebx] ) + 1;
esi = esi + ( 8 );
ebp = ( (int32_t)ebp ) - 1;
if (( (int32_t)ebp ) != 0) goto MV2SortRenderBufferASM_SortLoop4;
//pop es
return;
}