Rice Video Plugin for GLES1.1

[mupen64plus-pandora.git] / source / rice_gles / src / DirectXDecodedMux.cpp

diff --git a/source/rice_gles/src/DirectXDecodedMux.cpp b/source/rice_gles/src/DirectXDecodedMux.cpp
new file mode 100644 (file)
index 0000000..2fab963
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+++ b/source/rice_gles/src/DirectXDecodedMux.cpp
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+/*
+Copyright (C) 2003 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 "Combiner.h"
+#include "DirectXDecodedMux.h"
+#include <algorithm>
+
+#ifdef min
+#undef min
+#endif
+#ifdef max
+#undef max
+#endif
+
+//This function is called after Reformat to handel two texels in 1 cycle, D3D can not handle
+//two texels in a single stage, the texels must be splited into multiple stages
+void CDirectXDecodedMux::ReformatAgainWithTwoTexels(void)
+{
+    if( CountTexels() < 2 )
+        return;
+
+    for( int i=0; i<2; i++ )
+    {
+        N64CombinerType &m = m_n64Combiners[i];
+        if( CountTexel1Cycle(m) < 2 )
+        {
+            continue;   //1st cycle does not have two texels, do nothing here
+        }
+        else
+        {
+            N64CombinerType &m2 = m_n64Combiners[i+2];
+            
+            if( splitType[i] == CM_FMT_TYPE_A_MOD_C )   //Texel0*Texel1
+            {
+                if( splitType[i+2] == CM_FMT_TYPE_NOT_USED )
+                {
+                    //Change Texel1*Texel0 to (SEL(tex1), MOD(tex0))
+                    m.d = m.a;
+                    m.a = MUX_0;
+                    m2.a = m.c;
+                    m2.c = MUX_COMBINED;
+                    m2.d = m2.b = MUX_0;
+                    m.c = MUX_0;
+                    splitType[i+2] = CM_FMT_TYPE_A_MOD_C;
+                    splitType[i] = CM_FMT_TYPE_D;
+                }
+                else if( splitType[i+2] == CM_FMT_TYPE_A_MOD_C )
+                {
+                    if( m2.a == MUX_COMBINED )
+                    {
+                        swap(m2.a, m2.c);
+                    }
+
+                    if( m2.a != MUX_TEXEL0 && m2.a != MUX_TEXEL1 )
+                    {
+                        //cool, we can swap m2.a to cycle1 and swap texel from cycle 1 to cycle 2
+                        swap(m.a, m2.a);
+                    }
+                    else
+                    {
+                        if( m.a == m2.a )
+                        {
+                            swap(m.c, m2.a);
+                        }
+                        else
+                        {
+                            swap(m.a, m2.a);
+                        }
+                    }
+                }
+                else if( splitType[i+2] == CM_FMT_TYPE_A_MOD_C_ADD_D )
+                {
+                    if( m2.a == MUX_COMBINED )
+                    {
+                        swap(m2.a, m2.c);
+                    }
+
+                    if( m2.c == MUX_COMBINED && m2.d != MUX_COMBINED )
+                    {
+                        //Cycle1: texel0*texel1
+                        //Cycle2: a*cmd+d
+                        if( m2.a != MUX_TEXEL0 && m2.a != MUX_TEXEL1 )
+                        {
+                            //cool, we can swap m2.a to cycle1 and swap texel from cycle 1 to cycle 2
+                            swap(m.a, m2.a);
+                        }
+                        else
+                        {
+                            if( m.a == m2.a )
+                            {
+                                swap(m.c, m2.a);
+                            }
+                            else
+                            {
+                                swap(m.a, m2.a);
+                            }
+                        }
+                    }
+                }
+                else if( splitType[i] == CM_FMT_TYPE_A_ADD_D )  //Texel0+Texel1
+                {
+                    if( splitType[i+2] == CM_FMT_TYPE_NOT_USED )
+                    {
+                        //Change Texel1*Texel0 to (SEL(tex1), MOD(tex0))
+                        m2.a = m.d;
+                        m2.d = MUX_COMBINED;
+                        m2.b = m2.c = MUX_0;
+                        m.d = m.a;
+                        m.a = MUX_0;
+                        splitType[i+2] = CM_FMT_TYPE_A_ADD_D;
+                        splitType[i] = CM_FMT_TYPE_D;
+                    }
+                    else if( splitType[i+2] == CM_FMT_TYPE_A_ADD_D )
+                    {
+                        if( m2.a == MUX_COMBINED )
+                        {
+                            swap(m2.a, m2.d);
+                        }
+
+                        if( m2.a != MUX_TEXEL0 && m2.a != MUX_TEXEL1 )
+                        {
+                            swap(m2.a, m.a);
+                        }
+                        else
+                        {
+                            if( m.a == m2.a )
+                            {
+                                swap(m.d, m2.a);
+                            }
+                            else
+                            {
+                                swap(m.a, m2.a);
+                            }
+                        }
+                    }
+                }
+            }
+
+            if( CountTexel1Cycle(m2) < 2 )
+            {
+                continue;   //2nd cycle does not have two texels
+            }
+        }
+    }
+}
+
+void CDirectXDecodedMux::Reformat(bool do_complement)
+{
+    DecodedMux::Reformat(do_complement);
+    ReformatAgainWithTwoTexels();
+    mType = std::max(std::max(std::max(splitType[0], splitType[1]),splitType[2]),splitType[3]);
+}
+
+