X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=source%2Frice_gles%2Fsrc%2FDecodedMux.cpp;fp=source%2Frice_gles%2Fsrc%2FDecodedMux.cpp;h=f776c19a1262a62bc4b6e238b45cee21aacc75a4;hb=d07c171fa694cae985ad7045f9ce2b2f1a5699b4;hp=0000000000000000000000000000000000000000;hpb=ca22e7b76883b946060a6b40bb8709c1981e1cf6;p=mupen64plus-pandora.git

diff --git a/source/rice_gles/src/DecodedMux.cpp b/source/rice_gles/src/DecodedMux.cpp
new file mode 100644
index 0000000..f776c19
--- /dev/null
+++ b/source/rice_gles/src/DecodedMux.cpp
@@ -0,0 +1,1559 @@
+/*
+Copyright (C) 2002 Rice1964
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+
+#include <algorithm>
+
+#include "GeneralCombiner.h"
+#include "Combiner.h"
+#include "Config.h"
+#include "RenderBase.h"
+
+#define ALLOW_USE_TEXTURE_FOR_CONSTANTS
+
+static const uint8 sc_Mux32[32] = 
+{
+    MUX_COMBINED, MUX_TEXEL0,   MUX_TEXEL1, MUX_PRIM,
+    MUX_SHADE,    MUX_ENV,      MUX_1,      MUX_COMBINED|MUX_ALPHAREPLICATE,
+    MUX_TEXEL0|MUX_ALPHAREPLICATE, MUX_TEXEL1|MUX_ALPHAREPLICATE, MUX_PRIM|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE,
+    MUX_ENV|MUX_ALPHAREPLICATE, MUX_LODFRAC, MUX_PRIMLODFRAC, MUX_K5,       // Actually k5
+    MUX_UNK, MUX_UNK, MUX_UNK, MUX_UNK,
+    MUX_UNK, MUX_UNK, MUX_UNK, MUX_UNK,
+    MUX_UNK, MUX_UNK, MUX_UNK, MUX_UNK,
+    MUX_UNK, MUX_UNK, MUX_UNK, MUX_0
+};
+
+static const uint8 sc_Mux16[16] = 
+{
+    MUX_COMBINED, MUX_TEXEL0,   MUX_TEXEL1, MUX_PRIM,
+    MUX_SHADE,    MUX_ENV,      MUX_1,      MUX_COMBALPHA,
+    MUX_TEXEL0|MUX_ALPHAREPLICATE, MUX_TEXEL1|MUX_ALPHAREPLICATE, MUX_PRIM|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE,
+    MUX_ENV|MUX_ALPHAREPLICATE, MUX_LODFRAC, MUX_PRIMLODFRAC, MUX_0 
+};
+static const uint8 sc_Mux8[8] = 
+{
+    MUX_COMBINED, MUX_TEXEL0,   MUX_TEXEL1, MUX_PRIM,
+    MUX_SHADE,    MUX_ENV,      MUX_1,      MUX_0
+};
+
+
+const char * translatedCombTypes[] =
+{
+    "0",
+    "1",
+    "COMBINED",
+    "TEXEL0",
+    "TEXEL1",
+    "PRIM",
+    "SHADE",
+    "ENV",
+    "COMBALPHA",
+    "T0_ALPHA_wrong",
+    "T1_ALPHA_wrong",
+    "PRIM_ALPHA_wrong",
+    "SHADE_ALPHA_wrong",
+    "ENV_ALPHA_wrong",
+    "LODFRAC",
+    "PRIMLODFRAC",
+    "K5",
+    "UNK",
+    "FACTOR_PRIM_MINUS_ENV",
+    "FACTOR_ENV_MINUS_PRIM",
+    "FACTOR_1_MINUS_PRIM",
+    "FACTOR_0_MINUS_PRIM",
+    "FACTOR_1_MINUS_ENV",
+    "FACTOR_0_MINUS_ENV",
+    "FACTOR_1_MINUS_PRIMALPHA",
+    "FACTOR_1_MINUS_ENVALPHA",
+    "FACTOR_HALF",
+    "PRIM_X_PRIMALPHA",
+    "1_MINUS_PRIM_X_ENV_PLUS_PRIM",
+    "ENV_X_PRIM",
+    "PRIM_X_1_MINUS_ENV",
+    "PRIM_X_PRIM",
+    "ENV_X_ENV",
+};
+
+const char* muxTypeStrs[] = {
+    "CM_FMT_TYPE_NOT_USED",
+    "CM_FMT_TYPE1_D",
+    "CM_FMT_TYPE2_A_ADD_D",
+    "CM_FMT_TYPE3_A_MOD_C",
+    "CM_FMT_TYPE4_A_SUB_B",
+    "CM_FMT_TYPE5_A_MOD_C_ADD_D",
+    "CM_FMT_TYPE6_A_LERP_B_C",
+    "CM_FMT_TYPE7_A_SUB_B_ADD_D",
+    "CM_FMT_TYPE8_A_SUB_B_MOD_C",
+    "CM_FMT_TYPE9_A_B_C_D",
+    "CM_FMT_TYPE_NOT_CHECKED",
+};
+
+void DecodedMux::Decode(uint32 dwMux0, uint32 dwMux1)
+{
+    m_dwMux0 = dwMux0;
+    m_dwMux1 = dwMux1;
+
+    aRGB0  = uint8((dwMux0>>20)&0x0F);  // c1 c1        // a0
+    bRGB0  = uint8((dwMux1>>28)&0x0F);  // c1 c2        // b0
+    cRGB0  = uint8((dwMux0>>15)&0x1F);  // c1 c3        // c0
+    dRGB0  = uint8((dwMux1>>15)&0x07);  // c1 c4        // d0
+    
+    aA0    = uint8((dwMux0>>12)&0x07);  // c1 a1        // Aa0
+    bA0    = uint8((dwMux1>>12)&0x07);  // c1 a2        // Ab0
+    cA0    = uint8((dwMux0>>9 )&0x07);  // c1 a3        // Ac0
+    dA0    = uint8((dwMux1>>9 )&0x07);  // c1 a4        // Ad0
+    
+    aRGB1  = uint8((dwMux0>>5 )&0x0F);  // c2 c1        // a1
+    bRGB1  = uint8((dwMux1>>24)&0x0F);  // c2 c2        // b1
+    cRGB1  = uint8((dwMux0    )&0x1F);  // c2 c3        // c1
+    dRGB1  = uint8((dwMux1>>6 )&0x07);  // c2 c4        // d1
+    
+    aA1    = uint8((dwMux1>>21)&0x07);  // c2 a1        // Aa1
+    bA1    = uint8((dwMux1>>3 )&0x07);  // c2 a2        // Ab1
+    cA1    = uint8((dwMux1>>18)&0x07);  // c2 a3        // Ac1
+    dA1    = uint8((dwMux1    )&0x07);  // c2 a4        // Ad1
+
+    //This fuction will translate the decode mux info further, so we can use
+    //the decode data better.
+    //Will translate A,B,C,D to unified presentation
+    aRGB0  = sc_Mux16[aRGB0];
+    bRGB0  = sc_Mux16[bRGB0];
+    cRGB0  = sc_Mux32[cRGB0];
+    dRGB0  = sc_Mux8[dRGB0];
+    
+    aA0    = sc_Mux8[aA0];
+    bA0    = sc_Mux8[bA0];
+    cA0    = sc_Mux8[cA0];
+    dA0    = sc_Mux8[dA0];
+    
+    aRGB1  = sc_Mux16[aRGB1];
+    bRGB1  = sc_Mux16[bRGB1];
+    cRGB1  = sc_Mux32[cRGB1];
+    dRGB1  = sc_Mux8[dRGB1];
+    
+    aA1    = sc_Mux8[aA1];
+    bA1    = sc_Mux8[bA1];
+    cA1    = sc_Mux8[cA1];
+    dA1    = sc_Mux8[dA1];
+
+    m_bShadeIsUsed[1] = isUsedInAlphaChannel(MUX_SHADE);
+    m_bShadeIsUsed[0] = isUsedInColorChannel(MUX_SHADE);
+    m_bTexel0IsUsed = isUsed(MUX_TEXEL0);
+    m_bTexel1IsUsed = isUsed(MUX_TEXEL1);
+
+    m_dwShadeColorChannelFlag = 0;
+    m_dwShadeAlphaChannelFlag = 0;
+    m_ColorTextureFlag[0] = 0;
+    m_ColorTextureFlag[1] = 0;
+}
+
+int DecodedMux::Count(uint8 val, int cycle, uint8 mask)
+{
+    uint8* pmux = m_bytes;
+    int count=0;
+    int start=0;
+    int end=16;
+
+    if( cycle >= 0 )
+    {
+        start = cycle*4;
+        end = start+4;
+    }
+
+
+    for( int i=start; i<end; i++ )
+    {
+        if( (pmux[i]&mask) == (val&mask) )
+        {
+            count++;
+        }
+    }
+
+    return count;
+}
+
+
+bool DecodedMux::isUsed(uint8 val, uint8 mask)
+{
+    uint8* pmux = m_bytes;
+    bool isUsed = false;
+    for( int i=0; i<16; i++ )
+    {
+        if( (pmux[i]&mask) == (val&mask) )
+        {
+            isUsed = true;
+            break;
+        }
+    }
+
+    return isUsed;
+}
+
+bool DecodedMux::isUsedInAlphaChannel(uint8 val, uint8 mask)
+{
+    uint8* pmux = m_bytes;
+    bool isUsed = false;
+    for( int i=0; i<16; i++ )
+    {
+        if( (i/4)%2 == 0 )
+            continue;   //Don't test color channel
+
+        if( (pmux[i]&mask) == (val&mask) )
+        {
+            isUsed = true;
+            break;
+        }
+    }
+
+    return isUsed;
+}
+
+bool DecodedMux::isUsedInColorChannel(uint8 val, uint8 mask)
+{
+    uint8* pmux = m_bytes;
+    bool isUsed = false;
+    for( int i=0; i<16; i++ )
+    {
+        if( (i/4)%2 == 0 && (pmux[i]&mask) == (val&mask) )
+        {
+            isUsed = true;
+            break;
+        }
+    }
+
+    return isUsed;
+}
+
+
+bool DecodedMux::isUsedInCycle(uint8 val, int cycle, CombineChannel channel, uint8 mask)
+{
+    cycle *=2;
+    if( channel == ALPHA_CHANNEL ) cycle++;
+
+    uint8* pmux = m_bytes;
+    for( int i=0; i<4; i++ )
+    {
+        if( (pmux[i+cycle*4]&mask) == (val&mask) )
+        {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+bool DecodedMux::isUsedInCycle(uint8 val, int cycle, uint8 mask)
+{
+    return isUsedInCycle(val, cycle/2, cycle%2?ALPHA_CHANNEL:COLOR_CHANNEL, mask);
+}
+
+
+void DecodedMux::ConvertComplements()
+{
+    //For (A-B)*C+D, if A=1, then we can convert A-B to Ac-0
+    if( aRGB0 != MUX_1 && bRGB0 != MUX_0 )
+    {
+        aRGB0 = bRGB0|MUX_COMPLEMENT;
+        bRGB0 = MUX_0;
+    }
+    if( aRGB1 != MUX_1 && bRGB1 != MUX_0 )
+    {
+        aRGB1 = bRGB1|MUX_COMPLEMENT;
+        bRGB1 = MUX_0;
+    }
+    if( aA0 != MUX_1 && bA0 != MUX_0 )
+    {
+        aA0 = bA0|MUX_COMPLEMENT;
+        bA0 = MUX_0;
+    }
+    if( aA1 != MUX_1 && bA1 != MUX_0 )
+    {
+        aA1 = bA1|MUX_COMPLEMENT;
+        bA1 = MUX_0;
+    }
+}
+
+
+CombinerFormatType DecodedMux::GetCombinerFormatType(uint32 cycle)
+{
+    //Analyze the formula
+    /*
+    C=0                 = D
+    A==B                = D
+    B=0, C=1, D=0       = A
+    A=1, B=0, D=0       = C
+    C=1, B==D           = A
+    A=1, C=1, D=0       = 1-B
+    D = 1               = 1
+    */
+    return CM_FMT_TYPE_D;
+}
+
+void DecodedMuxForPixelShader::Simplify(void)
+{
+    CheckCombineInCycle1();
+    //Reformat();
+
+    if( g_curRomInfo.bTexture1Hack )
+    {
+        ReplaceVal(MUX_TEXEL1,MUX_TEXEL0,2);
+        ReplaceVal(MUX_TEXEL1,MUX_TEXEL0,3);
+    }
+    splitType[0] = CM_FMT_TYPE_NOT_USED;
+    splitType[1] = CM_FMT_TYPE_NOT_USED;
+    splitType[2] = CM_FMT_TYPE_NOT_USED;
+    splitType[3] = CM_FMT_TYPE_NOT_USED;
+    mType = CM_FMT_TYPE_NOT_USED;
+
+    m_bTexel0IsUsed = isUsed(MUX_TEXEL0);
+    m_bTexel1IsUsed = isUsed(MUX_TEXEL1);
+}
+
+void DecodedMuxForSemiPixelShader::Reset(void)
+{
+    Decode(m_dwMux0, m_dwMux1);
+    splitType[0] = CM_FMT_TYPE_NOT_CHECKED;
+    splitType[1] = CM_FMT_TYPE_NOT_CHECKED;
+    splitType[2] = CM_FMT_TYPE_NOT_CHECKED;
+    splitType[3] = CM_FMT_TYPE_NOT_CHECKED;
+
+    Hack();
+
+    gRSP.bProcessDiffuseColor = false;
+    gRSP.bProcessSpecularColor = false;
+
+    CheckCombineInCycle1();
+    if( g_curRomInfo.bTexture1Hack )
+    {
+        ReplaceVal(MUX_TEXEL1,MUX_TEXEL0,2);
+        ReplaceVal(MUX_TEXEL1,MUX_TEXEL0,3);
+    }
+
+    m_bTexel0IsUsed = isUsed(MUX_TEXEL0);
+    m_bTexel1IsUsed = isUsed(MUX_TEXEL1);
+}
+
+void DecodedMuxForOGL14V2::Simplify(void)
+{
+    CheckCombineInCycle1();
+    if( g_curRomInfo.bTexture1Hack )
+    {
+        ReplaceVal(MUX_TEXEL1,MUX_TEXEL0,2);
+        ReplaceVal(MUX_TEXEL1,MUX_TEXEL0,3);
+    }
+    Reformat();
+
+    UseTextureForConstant();
+    Reformat();
+
+    m_bTexel0IsUsed = isUsed(MUX_TEXEL0);
+    m_bTexel1IsUsed = isUsed(MUX_TEXEL1);
+}
+
+void DecodedMux::Simplify(void)
+{
+    CheckCombineInCycle1();
+    if( gRDP.otherMode.text_lod )
+        ConvertLODFracTo0();
+    if( g_curRomInfo.bTexture1Hack )
+    {
+        ReplaceVal(MUX_TEXEL1,MUX_TEXEL0,2);
+        ReplaceVal(MUX_TEXEL1,MUX_TEXEL0,3);
+    }
+    Reformat();
+
+    UseShadeForConstant();
+    Reformat();
+
+    if( m_dwShadeColorChannelFlag == MUX_0 )
+    {
+        MergeShadeWithConstants();
+        Reformat();
+    }
+
+#ifdef ALLOW_USE_TEXTURE_FOR_CONSTANTS
+    UseTextureForConstant();
+    for( int i=0; i<2; i++ )
+    {
+        if( m_ColorTextureFlag[i] != 0 )
+        {
+            if( m_dwShadeColorChannelFlag == m_ColorTextureFlag[i] )
+            {
+                ReplaceVal(MUX_SHADE,MUX_TEXEL0+i,N64Cycle0RGB);
+                ReplaceVal(MUX_SHADE,MUX_TEXEL0+i,N64Cycle1RGB);
+                m_dwShadeColorChannelFlag = 0;
+            }
+            if( m_dwShadeAlphaChannelFlag == m_ColorTextureFlag[i] )
+            {
+                ReplaceVal(MUX_SHADE,MUX_TEXEL0+i,N64Cycle0Alpha);
+                ReplaceVal(MUX_SHADE,MUX_TEXEL0+i,N64Cycle1Alpha);
+                ReplaceVal(MUX_SHADE|MUX_ALPHAREPLICATE,(MUX_TEXEL0+i)|MUX_ALPHAREPLICATE,N64Cycle0RGB,MUX_MASK_WITH_ALPHA);
+                ReplaceVal(MUX_SHADE|MUX_ALPHAREPLICATE,(MUX_TEXEL0+i)|MUX_ALPHAREPLICATE,N64Cycle1RGB,MUX_MASK_WITH_ALPHA);
+                m_dwShadeAlphaChannelFlag = 0;
+            }
+        }
+    }
+    Reformat();
+#endif
+
+    m_bTexel0IsUsed = isUsed(MUX_TEXEL0);
+    m_bTexel1IsUsed = isUsed(MUX_TEXEL1);
+}
+
+void DecodedMux::Reformat(bool do_complement)
+{
+    if( m_dWords[N64Cycle0RGB] == m_dWords[N64Cycle1RGB] )
+    {
+        aRGB1 = MUX_0;
+        bRGB1 = MUX_0;
+        cRGB1 = MUX_0;
+        dRGB1 = MUX_COMBINED;
+        splitType[N64Cycle1RGB] = CM_FMT_TYPE_NOT_USED;
+    }
+
+    if( m_dWords[N64Cycle0Alpha] == m_dWords[N64Cycle1Alpha] )
+    {
+        aA1 = MUX_0;
+        bA1 = MUX_0;
+        cA1 = MUX_0;
+        dA1 = MUX_COMBINED;
+        splitType[N64Cycle1Alpha] = CM_FMT_TYPE_NOT_USED;
+    }
+
+    for( int i=0; i<4; i++ )
+    {
+        if( splitType[i] == CM_FMT_TYPE_NOT_USED )
+        {
+            continue;   //Skip this, it is not used
+        }
+
+        N64CombinerType &m = m_n64Combiners[i];
+        //if( m.a == MUX_0 || m.c == MUX_0 || m.a ==  m.b ) m.a = m.b = m.c = MUX_0;
+        if( m.c == MUX_0 || m.a ==  m.b )   m.a = m.b = m.c = MUX_0;
+        if( do_complement && (m.b == MUX_1 || m.d == MUX_1) )  m.a = m.b = m.c = MUX_0;
+        if( m.a == MUX_0 && m.b == m.d ) 
+        {
+            m.a = m.b;
+            m.b = m.d = 0;
+            //Hack for Mario Tennis
+            if( options.enableHackForGames == HACK_FOR_MARIO_TENNIS && m.c == MUX_TEXEL1 )
+            {
+                if( do_complement )
+                    m.c = MUX_TEXEL0|MUX_COMPLEMENT;
+                else
+                {
+                    m.a = m.c;
+                    m.c = m.b;
+                    m.b = m.a;
+                    m.a = MUX_1;
+                }
+            }
+            //m.c ^= MUX_COMPLEMENT;
+        }
+
+        //Type 1    == D
+        //Analyze the formula
+        //Check Type 1
+        //D = 1             = D(=1)
+        //C=0               = D
+        //A==B              = D
+        //B=0, C=1, D=0     = A
+        //C=1, B==D         = A
+        //A=1, B=0, D=0     = C
+        //A=1, C=1, D=0     = 1-B
+
+        splitType[i] = CM_FMT_TYPE_NOT_CHECKED; //All Type 1 will be changed to = D
+        if( m.c == MUX_0 || m.a==m.b || ( do_complement && (m.d == MUX_1 || m.b==MUX_1)) )
+        {
+            splitType[i] = CM_FMT_TYPE_D;   //All Type 1 will be changed to = D
+            m.a = m.b = m.c = MUX_0;
+            if( m.d == MUX_COMBINED && i>=N64Cycle1RGB )    splitType[i] = CM_FMT_TYPE_NOT_USED;
+        }
+        else if( (m.b == MUX_0 && m.c == MUX_1 && m.d == MUX_0 ) || ( m.c == MUX_1 && m.b==m.d ) )
+        {
+            splitType[i] = CM_FMT_TYPE_D;   //All Type 1 will be changed to = D
+            m.d = m.a;
+            m.a =  m.b = m.c = MUX_0;
+            if( m.d == MUX_COMBINED && i>=N64Cycle1RGB )    splitType[i] = CM_FMT_TYPE_NOT_USED;
+        }
+        else if( m.a == MUX_1 && m.b == MUX_0 && m.d == MUX_0 )
+        {
+            splitType[i] = CM_FMT_TYPE_D;   //All Type 1 will be changed to = D
+            m.d = m.c;
+            m.a =  m.b = m.c = MUX_0;
+            if( m.d == MUX_COMBINED && i>=N64Cycle1RGB )    splitType[i] = CM_FMT_TYPE_NOT_USED;
+        }
+        else if( m.a == MUX_1 && m.c == MUX_1 && m.d == MUX_0 && do_complement )
+        {
+            splitType[i] = CM_FMT_TYPE_D;   //All Type 1 will be changed to = D
+            m.d = m.b^MUX_COMPLEMENT;
+            m.a =  m.b = m.c = MUX_0;
+            if( m.d == MUX_COMBINED && i>=N64Cycle1RGB )    splitType[i] = CM_FMT_TYPE_NOT_USED;
+        }
+
+        if( splitType[i] == CM_FMT_TYPE_NOT_USED )
+            continue;
+
+        if( splitType[i] == CM_FMT_TYPE_D )
+        {
+            if( (i == N64Cycle0RGB || i == N64Cycle0Alpha) && splitType[i+2]!=CM_FMT_TYPE_NOT_USED )    //Cycle 1's Color or Alpha
+            {
+                uint8 saveD = m.d;
+                for( int j=0; j<4; j++ )
+                {
+                    if( (m_bytes[j+i*4+8]&MUX_MASK) == MUX_COMBINED )
+                    {
+                        m_bytes[j+i*4+8] = saveD|(m_bytes[j+i*4+8]&0xC0);   //Replace cycle's CMB with D from cycle 1
+                    }
+                }
+                m_dWords[i] = m_dWords[i+2];
+                splitType[i+2]=CM_FMT_TYPE_NOT_USED;
+                m_dWords[i+2] = 0x02000000;
+                i=i-1;      // Throw the first cycle result away, use 2nd cycle for the 1st cycle
+                            // and then redo the 1st cycle
+                continue;
+            }
+
+            if( (i==2 || i == 3) && (m.d&MUX_MASK) == MUX_COMBINED )
+            {
+                splitType[i] = CM_FMT_TYPE_NOT_USED;
+            }
+            continue;
+        }
+
+
+        //Type 2: A+D   ' ADD
+        //B=0, C=1          = A+D
+        //A=1, B=0          = C+D
+        splitType[i] = CM_FMT_TYPE_A_ADD_D;         //All Type 2 will be changed to = A+D
+        if( m.b == MUX_0 && m.c == MUX_1 )
+        {
+            if( m.d == MUX_TEXEL0 || m.d == MUX_TEXEL1 )    swap(m.a, m.d);
+            if( m.a == MUX_COMBINED ) swap(m.a, m.d);
+            continue;
+        }
+
+        if( m.a == MUX_1 && m.b == MUX_0 )
+        {
+            m.a = m.c;          //Change format A+D
+            m.c = MUX_1;
+            if( m.d == MUX_TEXEL0 || m.d == MUX_TEXEL1 )    swap(m.a, m.d);
+            continue;
+        }
+
+
+        //Type 3: A*C
+        //B=0, D=0          = A*C
+        //A=1, D=0          = (1-A)*C
+        splitType[i] = CM_FMT_TYPE_A_MOD_C;         //A*C
+        if( m.b == MUX_0 && m.d == MUX_0 )
+        {
+            if( m.c == MUX_TEXEL0 || m.c == MUX_TEXEL1 )    swap(m.a, m.c);
+            if( m.a == MUX_COMBINED ) swap(m.a, m.c);
+            continue;
+        }
+
+        if( m.a == MUX_1 && m.d == MUX_0 && do_complement )
+        {
+            m.a = m.b^MUX_COMPLEMENT;
+            m.b = MUX_0;
+            if( m.c == MUX_TEXEL0 || m.c == MUX_TEXEL1 )    swap(m.a, m.c);
+            if( m.a == MUX_COMBINED ) swap(m.a, m.c);
+            continue;
+        }
+
+        //Type 4: A-B   ' SUB
+        //C=1, D=0          = A-B
+        splitType[i] = CM_FMT_TYPE_A_SUB_B;         //A-B
+        if( m.c == MUX_1 && m.d == MUX_0 )
+        {
+            continue;
+        }
+
+        //Type 5: A*C+D , ' MULTIPLYADD
+        //B=0               = A*C+D
+        //A=1               = (1-B) * C + D
+        splitType[i] = CM_FMT_TYPE_A_MOD_C_ADD_D;
+        if( m.b == MUX_0 )
+        {
+            if( m.c == MUX_TEXEL0 || m.c == MUX_TEXEL1 )    swap(m.a, m.c);
+            if( m.a == MUX_COMBINED ) swap(m.a, m.c); 
+            continue;
+        }
+
+        if( m.a == MUX_1 && m.b!=m.d && do_complement )
+        {
+            m.a = m.b^MUX_COMPLEMENT;
+            m.b = MUX_0;
+            if( m.c == MUX_TEXEL0 || m.c == MUX_TEXEL1 )    swap(m.a, m.c);
+            if( m.a == MUX_COMBINED ) swap(m.a, m.c); 
+            continue;
+        }
+
+        //Type 6: (A-B)*C+B Map to LERP, or BLENDALPHA
+        //D==B
+        splitType[i] = CM_FMT_TYPE_A_LERP_B_C;
+        if( m.b == m.d )
+        {
+            continue;
+        }
+
+
+        //Type 7: A-B+D
+        //C=1               = A-B+D
+        splitType[i] = CM_FMT_TYPE_A_SUB_B_ADD_D;
+        if( m.c == MUX_1 )
+        {
+            if( m.c == MUX_TEXEL0 || m.c == MUX_TEXEL1 )    swap(m.a, m.c);
+            continue;
+        }
+
+        //Type 8: (A-B)*C
+        splitType[i] = CM_FMT_TYPE_A_SUB_B_MOD_C;
+        if( m.d == MUX_0 )
+        {
+            continue;
+        }
+
+        if( m.c == m.d && do_complement )   // (A-B)*C+C   ==> (A + B|C ) * C
+        {
+            m.d = MUX_0;
+            m.b |= MUX_COMPLEMENT;
+            continue;
+        }
+
+        if( m.a == m.d )
+        {
+            splitType[i] = CM_FMT_TYPE_A_B_C_A;
+            continue;
+        }
+
+        //Type 9: (A-B)*C+D
+        splitType[i] = CM_FMT_TYPE_A_B_C_D;
+    }
+
+    if( (splitType[0] == CM_FMT_TYPE_D && splitType[2]!= CM_FMT_TYPE_NOT_USED ) ||  //Cycle 1 Color
+        (isUsedInCycle(MUX_COMBINED,1,COLOR_CHANNEL) == false && isUsedInCycle(MUX_COMBINED,1,ALPHA_CHANNEL) == false && splitType[2]!= CM_FMT_TYPE_NOT_USED) )
+    {
+        //Replace cycle 1 color with cycle 2 color because we have already replace cycle2's cmb 
+        aRGB0 = aRGB1;
+        bRGB0 = bRGB1;
+        cRGB0 = cRGB1;
+        dRGB0 = dRGB1;
+        aRGB1 = MUX_0;
+        bRGB1 = MUX_0;
+        cRGB1 = MUX_0;
+        dRGB1 = MUX_COMBINED;
+        splitType[0] = splitType[2];
+        splitType[2] = CM_FMT_TYPE_NOT_USED;
+    }
+
+    if( (splitType[1] == CM_FMT_TYPE_D && splitType[3]!= CM_FMT_TYPE_NOT_USED ) ||  //Cycle 2 Alpha
+        ( isUsedInCycle(MUX_COMBINED,1,ALPHA_CHANNEL) == false && isUsedInCycle(MUX_COMBINED|MUX_ALPHAREPLICATE,1,COLOR_CHANNEL,MUX_MASK_WITH_ALPHA) == false && splitType[3]!= CM_FMT_TYPE_NOT_USED) )
+    {
+        //Replace cycle 1 alpha with cycle 2 alpha because we have already replace cycle2's cmb 
+        aA0 = aA1;
+        bA0 = bA1;
+        cA0 = cA1;
+        dA0 = dA1;
+        aA1 = MUX_0;
+        bA1 = MUX_0;
+        cA1 = MUX_0;
+        dA1 = MUX_COMBINED;
+        splitType[1] = splitType[3];
+        splitType[3] = CM_FMT_TYPE_NOT_USED;
+    }
+
+    if( splitType[0] == CM_FMT_TYPE_A_MOD_C && splitType[2] == CM_FMT_TYPE_A_ADD_D )
+    {
+        m_n64Combiners[0].d = (m_n64Combiners[2].a & MUX_MASK) == MUX_COMBINED ? m_n64Combiners[2].d : m_n64Combiners[2].a;
+        splitType[0] = CM_FMT_TYPE_A_MOD_C_ADD_D;
+        splitType[2] = CM_FMT_TYPE_NOT_USED;
+        m_n64Combiners[2].a = MUX_0;
+        m_n64Combiners[2].c = MUX_0;
+        m_n64Combiners[2].d = MUX_COMBINED;
+    }
+
+    if( splitType[1] == CM_FMT_TYPE_A_MOD_C && splitType[3] == CM_FMT_TYPE_A_ADD_D )
+    {
+        m_n64Combiners[1].d = (m_n64Combiners[3].a & MUX_MASK) == MUX_COMBINED ? m_n64Combiners[3].d : m_n64Combiners[3].a;
+        splitType[1] = CM_FMT_TYPE_A_MOD_C_ADD_D;
+        splitType[3] = CM_FMT_TYPE_NOT_USED;
+        m_n64Combiners[3].a = MUX_0;
+        m_n64Combiners[3].c = MUX_0;
+        m_n64Combiners[3].d = MUX_COMBINED;
+    }
+    
+    mType = max(max(max(splitType[0], splitType[1]),splitType[2]),splitType[3]);
+}
+
+const char* MuxGroupStr[4] =
+{
+    "Color0",
+    "Alpha0",
+    "Color1",
+    "Alpha1",
+};
+
+char* DecodedMux::FormatStr(uint8 val, char *buf)
+{
+    if( val == CM_IGNORE_BYTE )
+    {
+        strcpy(buf," ");
+    }
+    else
+    {
+        strcpy(buf, translatedCombTypes[val&MUX_MASK]);
+        if( val&MUX_ALPHAREPLICATE )
+            strcat(buf,"|A");
+        if( val&MUX_COMPLEMENT )
+            strcat(buf,"|C");
+        if( val&MUX_NEG )
+            strcat(buf,"|N");
+    }
+
+    return buf;
+}
+
+void DecodedMux::Display(bool simplified,FILE *fp)
+{
+    DecodedMux decodedMux;
+    DecodedMux *mux;
+    if( simplified )
+    {
+        mux = this;
+    }
+    else
+    {
+        decodedMux.Decode(m_dwMux0, m_dwMux1);
+        mux = &decodedMux;
+    }
+
+    char buf0[30];
+    char buf1[30];
+    char buf2[30];
+    char buf3[30];
+
+    for( int i=0; i<2; i++ )
+    {
+        for(int j=0;j<2;j++)
+        {
+            N64CombinerType &m = mux->m_n64Combiners[i+2*j];
+            if( fp )
+            {
+                fprintf(fp,"%s: (%s - %s) * %s + %s\n", MuxGroupStr[i+2*j], FormatStr(m.a,buf0), 
+                    FormatStr(m.b,buf1), FormatStr(m.c,buf2), FormatStr(m.d,buf3));
+            }
+            else
+            {
+                DebuggerAppendMsg("%s: (%s - %s) * %s + %s\n", MuxGroupStr[i+2*j], FormatStr(m.a,buf0), 
+                    FormatStr(m.b,buf1), FormatStr(m.c,buf2), FormatStr(m.d,buf3));
+            }
+        }
+    }
+}
+
+int DecodedMux::HowManyConstFactors()
+{
+    int n=0;
+    if( isUsed(MUX_PRIM) ) n++;
+    if( isUsed(MUX_ENV) ) n++;
+    if( isUsed(MUX_LODFRAC) ) n++;
+    if( isUsed(MUX_PRIMLODFRAC) ) n++;
+    return n;
+}
+
+int DecodedMux::HowManyTextures()
+{
+    int n=0;
+    if( isUsed(MUX_TEXEL0) ) n++;
+    if( isUsed(MUX_TEXEL1) ) n++;
+    return n;
+}
+
+int DecodedMux::CountTexels(void)
+{
+    int count=0;
+
+    for( int i=0; i<4; i++ )
+    {
+        N64CombinerType &m = m_n64Combiners[i];
+        count = max(count, ::CountTexel1Cycle(m));
+        if( count == 2 ) 
+            break;
+    }
+
+    return count;
+}
+
+void DecodedMux::ReplaceVal(uint8 val1, uint8 val2, int cycle, uint8 mask)
+{
+    int start = 0;
+    int end = 16;
+
+    if( cycle >= 0 )
+    {
+        start = cycle*4;
+        end = start+4;
+    }
+
+    uint8* pmux = m_bytes;
+    for( int i=start; i<end; i++ )
+    {
+        if( (pmux[i]&mask) == (val1&mask) )
+        {
+            pmux[i] &= (~mask);
+            pmux[i] |= val2;
+        }
+    }
+}
+
+uint32 DecodedMux::GetCycle(int cycle, CombineChannel channel)
+{
+    uint32* pmux = m_dWords;
+    if( channel == COLOR_CHANNEL )
+    {
+        return pmux[cycle*2];
+    }
+    else
+    {
+        return pmux[cycle*2+1];
+    }
+
+}
+
+uint32 DecodedMux::GetCycle(int cycle)
+{
+    return m_dWords[cycle];
+}
+
+enum ShadeConstMergeType
+{
+    SHADE_DO_NOTHING,
+    SHADE_ADD_PRIM,             // Shade+PRIM
+    SHADE_ADD_ENV,              // Shade+ENV
+    SHADE_ADD_PRIM_ALPHA,           // Shade+PRIM_ALPHA
+    SHADE_ADD_ENV_ALPHA,            // Shade+ENV_ALPHA
+    SHADE_MINUS_PRIM_PLUS_ENV,  
+    SHADE_MINUS_ENV_PLUS_PRIM,
+    SHADE_MOD_ENV,
+};
+
+typedef struct 
+{
+uint64 mux; // simplified
+ShadeConstMergeType op;
+} ShadeConstMergeMapType;
+
+ShadeConstMergeMapType MergeShadeWithConstantsMaps[] =
+{
+{0, SHADE_DO_NOTHING},
+{0x0007000600070006LL, SHADE_MOD_ENV}, // SHADE * ENV
+};
+
+// 0x05070501, 0x00070006       //(1 - PRIM) * ENV + PRIM
+// 0x00050003, 0x00050003       //(TEXEL0 - 0) * PRIM + 0
+
+void DecodedMux::MergeShadeWithConstants(void)
+{
+    // This function should be called afte the mux has been simplified
+    // The goal of this function is to merge as many as possible constants with shade
+    // so to reduce the totally number of constants to 0 or 1
+    // And at the same time, to reduce the complexity of the whole mux
+    // so we can implement the mux easiler when lower end video cards
+
+    // We can only try to merge shade with constants for:
+    // 1 cycle mode or 2 cycle mode and shade is not used in the 2nd cycle
+
+    if( m_bShadeIsUsed[0] ) MergeShadeWithConstantsInChannel(COLOR_CHANNEL);
+    if( m_bShadeIsUsed[1] ) MergeShadeWithConstantsInChannel(ALPHA_CHANNEL);
+}
+
+void DecodedMux::MergeShadeWithConstantsInChannel(CombineChannel channel)
+{
+    bool usedIn[2];
+    uint32 cycleVal;
+    int cycleNum;
+
+    usedIn[0] = isUsedInCycle(MUX_SHADE,channel);
+    usedIn[1] = isUsedInCycle(MUX_SHADE,channel+2);
+    if( usedIn[0] && usedIn[1] && GetCycle(channel)!=GetCycle(channel+2) )
+    {
+        //Shade is used in more than 1 cycles, and the ways it is used are different
+        //in cycles, so we can not merge shade with const factors
+        return; 
+    }
+
+    if( usedIn[0] ) { cycleVal = GetCycle(channel);cycleNum=0;}
+    else            {cycleVal = GetCycle(channel+2);cycleNum=1;}
+
+
+    //Update to here, Shade is either used only in 1 cycle, or the way it is used are totally
+    //the same in different cycles
+
+    if( cycleVal == 0x06000000 || isUsedInCycle(MUX_COMBINED,channel+cycleNum*2) )  // (0-0)*0+Shade
+    {
+        return;
+    }
+
+    //Now we can merge shade with consts
+    for( int i=0; i<2; i++ )
+    {
+        if( usedIn[i] )
+        {
+            N64CombinerType &m = m_n64Combiners[channel+i*2];
+            if( isUsedInCycle(MUX_TEXEL0,i*2+channel) || isUsedInCycle(MUX_TEXEL1,i*2+channel) )
+            {
+                if( (m.a&MUX_MASK) == MUX_TEXEL0 || (m.a&MUX_MASK) == MUX_TEXEL1 )
+                {
+                    // m.a is texel, can not merge constant with shade
+                    return;
+                }
+                else if( (m.b&MUX_MASK) == MUX_TEXEL0 || (m.b&MUX_MASK) == MUX_TEXEL1 )
+                {
+                    // m.b is texel, can not merge constant with shade
+                    return;
+                }
+                else if(( (m.c&MUX_MASK) == MUX_TEXEL0 || (m.c&MUX_MASK) == MUX_TEXEL1 ) )
+                {
+                    if( (m.d&MUX_MASK) != MUX_SHADE )
+                    {
+                        cycleVal &= 0x0000FFFF;     // A-B
+                    }
+                    else if( (m.a&MUX_MASK) == MUX_SHADE || (m.b&MUX_MASK) == MUX_SHADE )
+                    {
+                        return;
+                    }
+                }
+                else if( (m.d&MUX_MASK) == MUX_TEXEL0 || (m.d&MUX_MASK) == MUX_TEXEL1 )
+                {
+                    cycleVal &= 0x00FFFFFF;     // (A-B)*C
+                }
+            }
+            else
+            {
+                m.a = m.b = m.c = MUX_0;
+                m.d = MUX_SHADE;
+                splitType[i*2+channel] = CM_FMT_TYPE_D;
+            }
+        }
+    }
+
+    if( channel == COLOR_CHANNEL )
+        m_dwShadeColorChannelFlag = cycleVal;
+    else
+        m_dwShadeAlphaChannelFlag = cycleVal;
+}
+
+
+void DecodedMux::MergeConstants(void)
+{
+    // This function should be called afte the mux has been simplified
+    // The goal of this function is to merge remain constants and to reduce the
+    // total number of constants, so we can implement the mux easiler
+
+    // This function should be called after the MergeShadeWithConstants() function
+}
+
+
+void DecodedMux::UseShadeForConstant(void)
+{
+    // If shade is not used in the mux, we can use it for constants
+    // This function should be called after constants have been merged
+
+    bool doAlphaChannel = true;
+    uint8 mask = (uint8)~MUX_COMPLEMENT;
+
+    int constants = 0;
+    if( isUsed(MUX_ENV) ) constants++;
+    if( isUsed(MUX_PRIM) ) constants++;
+    if( isUsed(MUX_LODFRAC) ) constants++;
+    if( isUsed(MUX_PRIMLODFRAC) ) constants++;
+
+    bool forceToUsed = constants>m_maxConstants;
+
+    if( !isUsedInColorChannel(MUX_SHADE) && (forceToUsed || max(splitType[0], splitType[2]) >= CM_FMT_TYPE_A_MOD_C_ADD_D) )
+    {
+        int countEnv = Count(MUX_ENV, N64Cycle0RGB, mask) + Count(MUX_ENV, N64Cycle1RGB, mask);
+        int countPrim = Count(MUX_PRIM, N64Cycle0RGB, mask) + Count(MUX_PRIM, N64Cycle1RGB, mask);
+        if( countEnv+countPrim > 0 )
+        {
+            if( countPrim >= countEnv )
+            {
+                //TRACE0("Use Shade for PRIM in color channel");
+                ReplaceVal(MUX_PRIM, MUX_SHADE, N64Cycle0RGB);
+                ReplaceVal(MUX_PRIM, MUX_SHADE, N64Cycle1RGB);
+                m_dwShadeColorChannelFlag = MUX_PRIM;
+            }
+            else if( countEnv>0 )
+            {
+                //TRACE0("Use Shade for ENV in color channel");
+                ReplaceVal(MUX_ENV, MUX_SHADE, N64Cycle0RGB);
+                ReplaceVal(MUX_ENV, MUX_SHADE, N64Cycle1RGB);
+                m_dwShadeColorChannelFlag = MUX_ENV;
+            }
+
+            if( isUsedInColorChannel(MUX_SHADE|MUX_ALPHAREPLICATE, mask) )
+            {
+                m_dwShadeAlphaChannelFlag = m_dwShadeColorChannelFlag;
+                ReplaceVal((uint8)m_dwShadeColorChannelFlag, MUX_SHADE, N64Cycle0Alpha);
+                ReplaceVal((uint8)m_dwShadeColorChannelFlag, MUX_SHADE, N64Cycle1Alpha);
+                doAlphaChannel = false;
+            }
+        }
+    }
+
+    if( doAlphaChannel && !isUsedInAlphaChannel(MUX_SHADE) && !isUsedInColorChannel(MUX_SHADE|MUX_ALPHAREPLICATE,MUX_MASK_WITH_ALPHA))
+    {
+        int countEnv = Count(MUX_ENV|MUX_ALPHAREPLICATE, N64Cycle0RGB, mask) + Count(MUX_ENV|MUX_ALPHAREPLICATE, N64Cycle1RGB, mask);
+        int countPrim = Count(MUX_PRIM|MUX_ALPHAREPLICATE, N64Cycle0RGB, mask) + Count(MUX_PRIM|MUX_ALPHAREPLICATE, N64Cycle1RGB, mask);
+
+        if( forceToUsed || max(splitType[1], splitType[3]) >= CM_FMT_TYPE_A_MOD_C_ADD_D ||
+            (max(splitType[0], splitType[2]) >= CM_FMT_TYPE_A_MOD_C_ADD_D && countEnv+countPrim > 0 ) )
+        {
+            countEnv = Count(MUX_ENV, N64Cycle0Alpha) + Count(MUX_ENV, N64Cycle1Alpha) +
+                            Count(MUX_ENV|MUX_ALPHAREPLICATE, N64Cycle0RGB, mask) + Count(MUX_ENV|MUX_ALPHAREPLICATE, N64Cycle1RGB, mask);
+            countPrim = Count(MUX_PRIM, N64Cycle0Alpha) + Count(MUX_PRIM, N64Cycle1Alpha) +
+                            Count(MUX_PRIM|MUX_ALPHAREPLICATE, N64Cycle0RGB, mask) + Count(MUX_PRIM|MUX_ALPHAREPLICATE, N64Cycle1RGB, mask);
+            if( countEnv+countPrim > 0 )
+            {
+                if( countPrim>0 && m_dwShadeColorChannelFlag == MUX_PRIM )
+                {
+                    //TRACE0("Use Shade for PRIM in alpha channel");
+                    ReplaceVal(MUX_PRIM, MUX_SHADE, N64Cycle0Alpha);
+                    ReplaceVal(MUX_PRIM, MUX_SHADE, N64Cycle1Alpha);
+                    ReplaceVal(MUX_PRIM|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE, N64Cycle0RGB, mask);
+                    ReplaceVal(MUX_PRIM|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE, N64Cycle1RGB, mask);
+                    m_dwShadeAlphaChannelFlag = MUX_PRIM;
+                }               
+                else if( countEnv>0 && m_dwShadeColorChannelFlag == MUX_ENV )
+                {
+                    //TRACE0("Use Shade for PRIM in alpha channel");
+                    ReplaceVal(MUX_ENV, MUX_SHADE, N64Cycle0Alpha);
+                    ReplaceVal(MUX_ENV, MUX_SHADE, N64Cycle1Alpha);
+                    ReplaceVal(MUX_ENV|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE, N64Cycle0RGB, mask);
+                    ReplaceVal(MUX_ENV|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE, N64Cycle1RGB, mask);
+                    m_dwShadeAlphaChannelFlag = MUX_ENV;
+                }               
+                else if( countPrim >= countEnv )
+                {
+                    //TRACE0("Use Shade for PRIM in alpha channel");
+                    ReplaceVal(MUX_PRIM, MUX_SHADE, N64Cycle0Alpha);
+                    ReplaceVal(MUX_PRIM, MUX_SHADE, N64Cycle1Alpha);
+                    ReplaceVal(MUX_PRIM|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE, N64Cycle0RGB, mask);
+                    ReplaceVal(MUX_PRIM|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE, N64Cycle1RGB, mask);
+                    m_dwShadeAlphaChannelFlag = MUX_PRIM;
+                }
+                else if( countEnv>0 )
+                {
+                    //TRACE0("Use Shade for ENV in alpha channel");
+                    ReplaceVal(MUX_ENV, MUX_SHADE, N64Cycle0Alpha);
+                    ReplaceVal(MUX_ENV, MUX_SHADE, N64Cycle1Alpha);
+                    ReplaceVal(MUX_ENV|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE, N64Cycle0RGB, mask);
+                    ReplaceVal(MUX_ENV|MUX_ALPHAREPLICATE, MUX_SHADE|MUX_ALPHAREPLICATE, N64Cycle1RGB, mask);
+                    m_dwShadeAlphaChannelFlag = MUX_ENV;
+                }
+            }
+        }
+    }
+}
+
+void DecodedMux::UseTextureForConstant(void)
+{
+    int numofconst = HowManyConstFactors();
+    int numOftex = HowManyTextures();
+
+    if( numofconst > m_maxConstants && numOftex < m_maxTextures )
+    {
+        // We can use a texture for a constant
+        for( int i=0; i<2 && numofconst > m_maxConstants ; i++ )
+        {
+            if( isUsed(MUX_TEXEL0+i) )
+            {
+                continue;   // can not use this texture
+            }
+
+            if( isUsed(MUX_PRIM) )
+            {
+                ReplaceVal(MUX_PRIM, MUX_TEXEL0+i);
+                m_ColorTextureFlag[i] = MUX_PRIM;
+                numofconst--;
+                continue;
+            }
+
+            if( isUsed(MUX_ENV) )
+            {
+                ReplaceVal(MUX_ENV, MUX_TEXEL0+i);
+                m_ColorTextureFlag[i] = MUX_ENV;
+                numofconst--;
+                continue;
+            }
+
+            if( isUsed(MUX_LODFRAC) )
+            {
+                ReplaceVal(MUX_LODFRAC, MUX_TEXEL0+i);
+                m_ColorTextureFlag[i] = MUX_LODFRAC;
+                numofconst--;
+                continue;
+            }
+
+            if( isUsed(MUX_PRIMLODFRAC) )
+            {
+                ReplaceVal(MUX_PRIMLODFRAC, MUX_TEXEL0+i);
+                m_ColorTextureFlag[i] = MUX_PRIMLODFRAC;
+                numofconst--;
+                continue;
+            }
+        }
+    }
+}
+
+
+void DecodedMuxForOGL14V2::UseTextureForConstant(void)
+{
+    bool envused = isUsed(MUX_ENV);
+    bool lodused = isUsed(MUX_LODFRAC);
+    
+    int numofconst = 0;
+    if( envused ) numofconst++;
+    if( lodused ) numofconst++;
+
+    int numOftex = HowManyTextures();
+
+    if( numofconst > 0 && numOftex < 2 )
+    {
+        // We can use a texture for a constant
+        for( int i=0; i<2 && numofconst > 0 ; i++ )
+        {
+            if( isUsed(MUX_TEXEL0+i) )
+            {
+                continue;   // can not use this texture
+            }
+
+            if( envused )
+            {
+                ReplaceVal(MUX_ENV, MUX_TEXEL0+i);
+                m_ColorTextureFlag[i] = MUX_ENV;
+                numofconst--;
+                envused = false;
+                continue;
+            }
+
+            if( isUsed(MUX_LODFRAC) )
+            {
+                ReplaceVal(MUX_LODFRAC, MUX_TEXEL0+i);
+                m_ColorTextureFlag[i] = MUX_LODFRAC;
+                numofconst--;
+                continue;
+            }
+
+            if( isUsed(MUX_PRIMLODFRAC) )
+            {
+                ReplaceVal(MUX_PRIMLODFRAC, MUX_TEXEL0+i);
+                m_ColorTextureFlag[i] = MUX_PRIMLODFRAC;
+                numofconst--;
+                continue;
+            }
+        }
+    }
+}
+
+#ifdef DEBUGGER
+extern const char *translatedCombTypes[];
+void DecodedMux::DisplayMuxString(const char *prompt)
+{
+    DebuggerAppendMsg("//Mux=0x%08x%08x\t%s in %s\n", m_dwMux0, m_dwMux1, prompt, g_curRomInfo.szGameName);
+    Display(false);
+    TRACE0("\n");
+}
+
+void DecodedMux::DisplaySimpliedMuxString(const char *prompt)
+{
+    DebuggerAppendMsg("//Simplied Mux=0x%08x%08x\t%s in %s\n", m_dwMux0, m_dwMux1, prompt, g_curRomInfo.szGameName);
+    DebuggerAppendMsg("Simplied DWORDs=%08X, %08X, %08X, %08X", m_dWords[0],m_dWords[1],m_dWords[2],m_dWords[3]);
+    Display(true);
+    DebuggerAppendMsg("Simplfied type: %s", muxTypeStrs[mType]);
+    if( m_dwShadeColorChannelFlag != 0 )
+    {
+        if( m_dwShadeColorChannelFlag == MUX_ENV )
+            TRACE0("Shade = ENV in color channel")
+        else if( m_dwShadeColorChannelFlag == MUX_PRIM )
+            TRACE0("Shade = PRIM in color channel")
+        else if( m_dwShadeColorChannelFlag == MUX_LODFRAC )
+            TRACE0("Shade = MUX_LODFRAC in color channel")
+        else if( m_dwShadeColorChannelFlag == MUX_PRIMLODFRAC )
+            TRACE0("Shade = MUX_PRIMLODFRAC in color channel")
+        else
+            DisplayConstantsWithShade(m_dwShadeColorChannelFlag,COLOR_CHANNEL);
+    }
+    if( m_dwShadeAlphaChannelFlag != 0 )
+    {
+        if( m_dwShadeAlphaChannelFlag == MUX_ENV )
+            TRACE0("Shade = ENV in alpha channel")
+        else if( m_dwShadeAlphaChannelFlag == MUX_PRIM )
+            TRACE0("Shade = PRIM in alpha channel")
+        else if( m_dwShadeAlphaChannelFlag == MUX_LODFRAC )
+            TRACE0("Shade = MUX_LODFRAC in alpha channel")
+        else if( m_dwShadeAlphaChannelFlag == MUX_PRIMLODFRAC )
+            TRACE0("Shade = MUX_PRIMLODFRAC in alpha channel")
+        else
+            DisplayConstantsWithShade(m_dwShadeAlphaChannelFlag,ALPHA_CHANNEL);
+    }
+
+    for( int i=0; i<2; i++ )
+    {
+        if( m_ColorTextureFlag[i] != 0 )
+        {
+            if( m_ColorTextureFlag[i] == MUX_ENV )
+                TRACE1("Tex %d = ENV", i)
+            else if( m_ColorTextureFlag[i] == MUX_PRIM )
+                TRACE1("Tex %d = PRIM", i)
+            else if( m_ColorTextureFlag[i] == MUX_LODFRAC )
+                TRACE1("Tex %d = MUX_LODFRAC", i)
+            else if( m_ColorTextureFlag[i] == MUX_PRIMLODFRAC )
+                TRACE1("Tex %d = MUX_PRIMLODFRAC", i)
+        }
+    }
+
+
+    TRACE0("\n");
+}
+
+void DecodedMux::DisplayConstantsWithShade(uint32 flag,CombineChannel channel)
+{
+    DebuggerAppendMsg("Shade = %08X in %s channel",flag,channel==COLOR_CHANNEL?"color":"alpha");
+}
+#else
+
+extern const char *translatedCombTypes[];
+void DecodedMux::LogMuxString(const char *prompt, FILE *fp)
+{
+    fprintf(fp,"//Mux=0x%08x%08x\t%s in %s\n", m_dwMux0, m_dwMux1, prompt, g_curRomInfo.szGameName);
+    Display(false,fp);
+    TRACE0("\n");
+}
+
+void DecodedMux::LogSimpliedMuxString(const char *prompt, FILE *fp)
+{
+    fprintf(fp,"//Simplied Mux=0x%08x%08x\t%s in %s\n", m_dwMux0, m_dwMux1, prompt, g_curRomInfo.szGameName);
+    fprintf(fp,"Simplied DWORDs=%08X, %08X, %08X, %08X\n", m_dWords[0],m_dWords[1],m_dWords[2],m_dWords[3]);
+    Display(true,fp);
+    fprintf(fp,"Simplfied type: %s", muxTypeStrs[mType]);
+    if( m_dwShadeColorChannelFlag != 0 )
+    {
+        if( m_dwShadeColorChannelFlag == MUX_ENV )
+            TRACE0("Shade = ENV in color channel")
+        else if( m_dwShadeColorChannelFlag == MUX_PRIM )
+        TRACE0("Shade = PRIM in color channel")
+        else if( m_dwShadeColorChannelFlag == MUX_LODFRAC )
+        TRACE0("Shade = MUX_LODFRAC in color channel")
+        else if( m_dwShadeColorChannelFlag == MUX_PRIMLODFRAC )
+        TRACE0("Shade = MUX_PRIMLODFRAC in color channel")
+        else
+        LogConstantsWithShade(m_dwShadeColorChannelFlag,COLOR_CHANNEL,fp);
+    }
+    if( m_dwShadeAlphaChannelFlag != 0 )
+    {
+        if( m_dwShadeAlphaChannelFlag == MUX_ENV )
+            TRACE0("Shade = ENV in alpha channel")
+        else if( m_dwShadeAlphaChannelFlag == MUX_PRIM )
+        TRACE0("Shade = PRIM in alpha channel")
+        else if( m_dwShadeAlphaChannelFlag == MUX_LODFRAC )
+        TRACE0("Shade = MUX_LODFRAC in alpha channel")
+        else if( m_dwShadeAlphaChannelFlag == MUX_PRIMLODFRAC )
+        TRACE0("Shade = MUX_PRIMLODFRAC in alpha channel")
+        else
+        LogConstantsWithShade(m_dwShadeAlphaChannelFlag,ALPHA_CHANNEL,fp);
+    }
+
+    for( int i=0; i<2; i++ )
+    {
+        if( m_ColorTextureFlag[i] != 0 )
+        {
+            if( m_ColorTextureFlag[i] == MUX_ENV )
+                TRACE1("Tex %d = ENV", i)
+            else if( m_ColorTextureFlag[i] == MUX_PRIM )
+            TRACE1("Tex %d = PRIM", i)
+            else if( m_ColorTextureFlag[i] == MUX_LODFRAC )
+            TRACE1("Tex %d = MUX_LODFRAC", i)
+            else if( m_ColorTextureFlag[i] == MUX_PRIMLODFRAC )
+            TRACE1("Tex %d = MUX_PRIMLODFRAC", i)
+        }
+    }
+
+
+    TRACE0("\n");
+}
+
+void DecodedMux::LogConstantsWithShade(uint32 flag,CombineChannel channel, FILE *fp)
+{
+    fprintf(fp,"Shade = %08X in %s channel",flag,channel==COLOR_CHANNEL?"color":"alpha");
+}
+#endif
+
+
+void DecodedMux::To_AB_Add_CD_Format(void)  // Use by TNT,Geforce
+{
+    // This function should be called after calling reformat 
+    // This function will not be called by default, can be called optionally
+    // by TNT/Geforce combiner compilers
+
+    for( int i=0; i<2; i++ )
+    {
+        N64CombinerType &m0 = m_n64Combiners[i];
+        N64CombinerType &m1 = m_n64Combiners[i+2];
+        switch( splitType[i] )
+        {
+        case CM_FMT_TYPE_A_SUB_B_ADD_D:     // = A-B+D      can not map very well in 1 stage
+            if( splitType[i+2] == CM_FMT_TYPE_NOT_USED )
+            {
+                m1.a = m0.d;
+                m1.d = MUX_COMBINED;
+                splitType[i+2] = CM_FMT_TYPE_A_ADD_D;
+
+                m0.d = MUX_0;
+                splitType[i] = CM_FMT_TYPE_A_SUB_B;
+            }
+            else if( splitType[i+2] == CM_FMT_TYPE_A_MOD_C )
+            {
+                if( (m1.c&MUX_MASK) == MUX_COMBINED )   swap(m1.a, m1.c);
+                m1.b = m1.d = m1.c;
+                m1.c = (m0.d | (m1.a & (~MUX_MASK)));
+                splitType[i+2] = CM_FMT_TYPE_AB_ADD_CD;
+
+                m0.d = MUX_0;
+                splitType[i] = CM_FMT_TYPE_A_SUB_B;
+            }
+            break;
+        case CM_FMT_TYPE_A_SUB_B_MOD_C:     // = (A-B)*C    can not map very well in 1 stage
+            m0.d = m0.b;
+            m0.b = m0.c;
+            splitType[i] = CM_FMT_TYPE_AB_SUB_CD;
+            break;
+        case CM_FMT_TYPE_A_ADD_B_MOD_C:     // = (A+B)*C    can not map very well in 1 stage
+            m0.d = m0.b;
+            m0.b = m0.c;
+            splitType[i] = CM_FMT_TYPE_AB_ADD_CD;
+            break;
+        case CM_FMT_TYPE_A_B_C_D:           // = (A-B)*C+D
+        case CM_FMT_TYPE_A_B_C_A:           // = (A-B)*C+D
+            if( splitType[i+2] == CM_FMT_TYPE_NOT_USED )
+            {
+                m1.a = m0.d;
+                m1.d = MUX_COMBINED;
+                splitType[i+2] = CM_FMT_TYPE_A_ADD_D;
+
+                m0.d = m0.b;
+                m0.b = m0.c;
+                splitType[i] = CM_FMT_TYPE_AB_SUB_CD;
+            }
+            else if( splitType[i+2] == CM_FMT_TYPE_A_MOD_C )
+            {
+                if( (m1.c&MUX_MASK) == MUX_COMBINED )   swap(m1.a, m1.c);
+                m1.b = m1.d = m1.c;
+                m1.c = (m0.d | (m1.a & (~MUX_MASK)));
+                splitType[i+2] = CM_FMT_TYPE_AB_ADD_CD;
+
+                m0.d = m0.b;
+                m0.b = m0.c;
+                splitType[i] = CM_FMT_TYPE_AB_ADD_CD;
+            }
+            break;
+         default:
+           break;
+        }
+    }
+}
+
+void DecodedMux::To_AB_Add_C_Format(void)   // Use by ATI Radeon
+{
+    // This function should be called after calling reformat
+    // This function will not be called by default, can be called optionally
+    // by ATI combiner compilers
+}
+
+void DecodedMux::CheckCombineInCycle1(void)
+{
+    if( isUsedInCycle(MUX_COMBINED,0,COLOR_CHANNEL) )
+    {
+        ReplaceVal(MUX_COMBINED, MUX_SHADE, 0);
+    }
+
+    if( isUsedInCycle(MUX_COMBALPHA,0,COLOR_CHANNEL) )
+    {
+        ReplaceVal(MUX_COMBALPHA, MUX_SHADE|MUX_ALPHAREPLICATE, 0);
+    }
+
+    if( isUsedInCycle(MUX_COMBINED,0,ALPHA_CHANNEL) )
+    {
+        if( cA0 == MUX_COMBINED && cRGB0 == MUX_LODFRAC && bRGB0 == dRGB0 && bA0 == dA0 )
+        {
+            cA0 = MUX_LODFRAC;
+        }
+        else
+        {
+            ReplaceVal(MUX_COMBINED, MUX_SHADE, 1);
+        }
+    }
+    if( isUsedInCycle(MUX_COMBALPHA,0,ALPHA_CHANNEL) )
+    {
+        ReplaceVal(MUX_COMBALPHA, MUX_SHADE, 1);
+    }
+}
+
+void DecodedMux::SplitComplexStages()
+{
+    for( int i=0; i<2; i++) // Color channel and alpha channel
+    {
+        if( splitType[i+2] != CM_FMT_TYPE_NOT_USED )    
+            continue;
+
+        N64CombinerType &m = m_n64Combiners[i];
+        N64CombinerType &m2 = m_n64Combiners[i+2];
+        
+        switch( splitType[i] )
+        {
+        case CM_FMT_TYPE_A_MOD_C_ADD_D:     // = A*C+D      can mapped to MULTIPLYADD(arg1,arg2,arg0)
+            m2.a = m.d;
+            m2.d = MUX_COMBINED;
+            m2.c = MUX_1;
+            m2.b = 0;
+            splitType[i+2] = CM_FMT_TYPE_A_ADD_D;
+            m.d = MUX_0;
+            splitType[i] = CM_FMT_TYPE_A_MOD_C;
+            break;
+        case CM_FMT_TYPE_A_SUB_B_ADD_D:     // = A-B+D      can not map very well in 1 stage
+            m2.a = m.d;
+            m2.d = MUX_COMBINED;
+            m2.c = MUX_1;
+            m2.b=0;
+            splitType[i+2] = CM_FMT_TYPE_A_ADD_D;
+            m.d = MUX_0;
+            splitType[i] = CM_FMT_TYPE_A_SUB_B;
+            break;
+        case CM_FMT_TYPE_A_SUB_B_MOD_C:     // = (A-B)*C    can not map very well in 1 stage
+            m2.a = m.c;
+            m2.c = MUX_COMBINED;
+            m2.d = m2.b=0;
+            splitType[i+2] = CM_FMT_TYPE_A_MOD_C;
+            m.c = MUX_1;
+            splitType[i] = CM_FMT_TYPE_A_SUB_B;
+            break;
+        case CM_FMT_TYPE_A_ADD_B_MOD_C:     // = (A+B)*C    can not map very well in 1 stage
+            m2.a = m.c;
+            m2.c = MUX_COMBINED;
+            m2.d = m2.b = 0;
+            splitType[i+2] = CM_FMT_TYPE_A_MOD_C;
+            m.c = MUX_1;
+            m.d = m.b;
+            m.b = MUX_0;
+            splitType[i] = CM_FMT_TYPE_A_ADD_D;
+            break;
+        case CM_FMT_TYPE_A_B_C_D:           // = (A-B)*C+D  can not map very well in 1 stage
+            m2.a = m.d;
+            m2.d = MUX_COMBINED;
+            m2.c = MUX_1;
+            m2.b = 0;
+            splitType[i+2] = CM_FMT_TYPE_A_ADD_D;
+            m.d = MUX_0;
+            splitType[i] = CM_FMT_TYPE_A_SUB_B_MOD_C;
+            break;
+        case CM_FMT_TYPE_A_B_C_A:           // = (A-B)*C+A  can not map very well in 1 stage
+            m2.a = m.d;
+            m2.d = MUX_COMBINED;
+            m2.c = MUX_1;
+            m2.b = 0;
+            splitType[i+2] = CM_FMT_TYPE_A_ADD_D;
+            m.d = MUX_0;
+            splitType[i] = CM_FMT_TYPE_A_SUB_B_MOD_C;
+            break;
+         default:
+           break;
+        }
+    }
+    //Reformat();
+    //UseShadeForConstant();
+}
+
+
+void DecodedMux::ConvertLODFracTo0()
+{
+    ReplaceVal(MUX_LODFRAC,MUX_0);
+    ReplaceVal(MUX_PRIMLODFRAC,MUX_0);
+}
+
+
+void DecodedMux::Hack(void)
+{
+    if( options.enableHackForGames == HACK_FOR_TONYHAWK )
+    {
+        if( gRSP.curTile == 1 )
+        {
+            ReplaceVal(MUX_TEXEL1, MUX_TEXEL0);
+        }
+    }
+    else if( options.enableHackForGames == HACK_FOR_ZELDA || options.enableHackForGames == HACK_FOR_ZELDA_MM)
+    {
+        if( m_dwMux1 == 0xfffd9238 && m_dwMux0 == 0x00ffadff )
+        {
+            ReplaceVal(MUX_TEXEL1, MUX_TEXEL0);
+        }
+        else if( m_dwMux1 == 0xff5bfff8 && m_dwMux0 == 0x00121603 )
+        {
+            // The Zelda road trace
+            ReplaceVal(MUX_TEXEL1, MUX_0);
+        }
+    }
+    else if( options.enableHackForGames == HACK_FOR_MARIO_TENNIS )
+    {
+        if( m_dwMux1 == 0xffebdbc0 && m_dwMux0 == 0x00ffb9ff )
+        {
+            // Player shadow
+            //m_decodedMux.dRGB0 = MUX_TEXEL0;
+            //m_decodedMux.dRGB1 = MUX_COMBINED;
+            cA1 = MUX_TEXEL0;
+        }
+    }
+    else if( options.enableHackForGames == HACK_FOR_MARIO_GOLF )
+    {
+        // Hack for Mario Golf
+        if( m_dwMux1 == 0xf1ffca7e || m_dwMux0 == 0x00115407 )
+        {
+            // The grass
+            ReplaceVal(MUX_TEXEL0, MUX_TEXEL1);
+        }
+    }
+    else if( options.enableHackForGames == HACK_FOR_TOPGEARRALLY )
+    {
+        //Mux=0x00317e025ffef3fa    Used in TOP GEAR RALLY
+        //Color0: (PRIM - ENV) * TEXEL1 + ENV
+        //Color1: (COMBINED - 0) * TEXEL1 + 0
+        //Alpha0: (0 - 0) * 0 + TEXEL0
+        //Alpha1: (0 - 0) * 0 + TEXEL1
+        if( m_dwMux1 == 0x5ffef3fa || m_dwMux0 == 0x00317e02 )
+        {
+            // The grass
+            //ReplaceVal(MUX_TEXEL0, MUX_TEXEL1);
+            dA1 = MUX_COMBINED;
+            //aA1 = MUX_COMBINED;
+            //cA1 = MUX_TEXEL1;
+            //dA1 = MUX_0;
+            cRGB1 = MUX_TEXEL0;
+        }
+    }
+}
+