meshmatdesc.cpp

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/*
**  Command & Conquer Generals Zero Hour(tm)
**  Copyright 2025 Electronic Arts Inc.
**
**  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 3 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, see <http://www.gnu.org/licenses/>.
*/
 
/***********************************************************************************************
 ***              C O N F I D E N T I A L  ---  W E S T W O O D  S T U D I O S               ***
 ***********************************************************************************************
 *                                                                                             *
 *                 Project Name : ww3d                                                         *
 *                                                                                             *
 *                     $Archive:: /Commando/Code/ww3d2/meshmatdesc.cpp                        $*
 *                                                                                             *
 *              Original Author:: Greg Hjelstrom                                               *
 *                                                                                             *
 *                      $Author:: Greg_h                                                      $*
 *                                                                                             *
 *                     $Modtime:: 1/18/02 8:03p                                               $*
 *                                                                                             *
 *                    $Revision:: 28                                                          $*
 *                                                                                             *
 *---------------------------------------------------------------------------------------------*
 * Functions:                                                                                  *
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
 
#include "meshmatdesc.h"
#include "texture.h"
#include "vertmaterial.h"
#include "realcrc.h"
#include    "dx8wrapper.h"
#include "dx8caps.h"
#include "meshmdl.h"
 
 
/**************************************************************************************************
**
**
** MatBufferClass Implementation
**
**
**************************************************************************************************/
MatBufferClass::MatBufferClass(const MatBufferClass & that) :
    ShareBufferClass<VertexMaterialClass *>(that)
{
    // add a reference for each pointer that was copied...
    for (int i=0; i<Count; i++) {
        if (Array[i]) {
            Array[i]->Add_Ref();
        }
    }
}
 
MatBufferClass::~MatBufferClass(void)
{
    for (int i=0; i<Count; i++) {
        REF_PTR_RELEASE(Array[i]);
    }
}
 
void MatBufferClass::Set_Element(int index,VertexMaterialClass * mat)
{
    REF_PTR_SET(Array[index],mat);
}
 
VertexMaterialClass * MatBufferClass::Get_Element(int index)
{
    if (Array[index]) {
        Array[index]->Add_Ref();
    }
    return Array[index];
}
 
VertexMaterialClass * MatBufferClass::Peek_Element(int index)
{
    return Array[index];
}
 
 
/**************************************************************************************************
**
**
** TexBufferClass Implementation
**
**
**************************************************************************************************/
TexBufferClass::TexBufferClass(const TexBufferClass & that) :
    ShareBufferClass<TextureClass *>(that)
{
    // add a reference for each pointer that was copied...
    for (int i=0; i<Count; i++) {
        if (Array[i]) {
            Array[i]->Add_Ref();
        }
    }
}
 
TexBufferClass::~TexBufferClass(void)
{
    for (int i=0;i<Count;i++) {
        REF_PTR_RELEASE(Array[i]);
    }
}
 
void TexBufferClass::Set_Element(int index,TextureClass * tex)
{
    REF_PTR_SET(Array[index],tex);
}
 
TextureClass * TexBufferClass::Get_Element(int index)
{
    if (Array[index]) {
        Array[index]->Add_Ref();
    }
    return Array[index];
}
 
TextureClass * TexBufferClass::Peek_Element(int index)
{
    return Array[index];
}
 
 
/**************************************************************************************************
**
**
** UVBufferClass Implementation
**
**
**************************************************************************************************/
UVBufferClass::UVBufferClass(const UVBufferClass & that) :
    ShareBufferClass<Vector2>(that)
{
    CRC = that.CRC;
}
 
bool UVBufferClass::operator == (const UVBufferClass & that)
{
    // NOTE: this only works if you've properly called Update_CRC after filling the array
    return (CRC == that.CRC);
}
 
bool UVBufferClass::Is_Equal_To(const UVBufferClass & that)
{
    // NOTE: this only works if you've properly called Update_CRC after filling the array
    return (CRC == that.CRC);
}
 
 
void UVBufferClass::Update_CRC(void)
{
    CRC = CRC_Memory((unsigned char *)Get_Array(),Get_Count() * sizeof(Vector2));
}
 
 
 
/**************************************************************************************************
**
**
** MeshMatDescClass Implementation
**
**
**************************************************************************************************/
ShaderClass MeshMatDescClass::NullShader(0); // Used to mark no shader data
 
MeshMatDescClass::MeshMatDescClass(void) :
    PassCount(1),
    VertexCount(0),
    PolyCount(0)
{
    for (int array=0;array < MAX_COLOR_ARRAYS; array++) {
        ColorArray[array] = NULL;
    }
 
    for (int uvarray=0;uvarray<MAX_UV_ARRAYS;uvarray++) {
        UV[uvarray] = NULL;
    }
 
    for (int pass=0; pass < MAX_PASSES; pass++) {
        for (int stage=0; stage < MAX_TEX_STAGES; stage++) {
            UVSource[pass][stage] = -1;
            Texture[pass][stage] = NULL;
            TextureArray[pass][stage] = NULL;
        }
        DCGSource[pass] = VertexMaterialClass::MATERIAL;
        DIGSource[pass] = VertexMaterialClass::MATERIAL;
 
        Shader[pass] = 0; //ShaderClass::_PresetOpaqueSolidShader;
        Material[pass] = NULL;
        ShaderArray[pass] = NULL;
        MaterialArray[pass] = NULL;
    }
}
 
MeshMatDescClass::MeshMatDescClass(const MeshMatDescClass & that) :
    PassCount(1),
    VertexCount(0),
    PolyCount(0)
{
    int pass;
    int stage;
    int array;
 
    // init everything to NULL
    for (array=0;array < MAX_COLOR_ARRAYS; array++) {
        ColorArray[array] = NULL;
    }
    for (array=0;array < MAX_UV_ARRAYS; array++) {
        UV[array] = NULL;
    }
 
    for (pass=0; pass < MAX_PASSES; pass++) {
        for (stage=0; stage < MAX_TEX_STAGES; stage++) {
            UVSource[pass][stage] = -1;
            Texture[pass][stage] = NULL;
            TextureArray[pass][stage] = NULL;
        }
        DCGSource[pass] = VertexMaterialClass::MATERIAL;
        DIGSource[pass] = VertexMaterialClass::MATERIAL;
 
        Shader[pass] = 0; //ShaderClass::_PresetOpaqueSolidShader;
        Material[pass] = NULL;
        ShaderArray[pass] = NULL;
        MaterialArray[pass] = NULL;
    }
 
    *this = that;
}
 
MeshMatDescClass &
MeshMatDescClass::operator = (const MeshMatDescClass & that)
{
    if (this != &that) {
 
        PassCount = that.PassCount;
        VertexCount = that.VertexCount;
        PolyCount = that.PolyCount;
 
        for (int array=0; array<MAX_COLOR_ARRAYS; array++) {
            REF_PTR_SET(ColorArray[array],that.ColorArray[array]);
        }
 
        for (int uvarray=0; uvarray<MAX_UV_ARRAYS; uvarray++) {
            REF_PTR_SET(UV[uvarray],that.UV[uvarray]);
        }
 
        for (int pass=0; pass<MAX_PASSES; pass++) {
            for (int stage=0; stage < MAX_TEX_STAGES; stage++) {
                UVSource[pass][stage] = that.UVSource[pass][stage];
                REF_PTR_SET(Texture[pass][stage],that.Texture[pass][stage]);
 
                // make our own array of texture pointers.
                REF_PTR_RELEASE(TextureArray[pass][stage]);
                if (that.TextureArray[pass][stage]) {
                    TextureArray[pass][stage] = NEW_REF(TexBufferClass,(*that.TextureArray[pass][stage]));
                }
            }
 
            DCGSource[pass] = that.DCGSource[pass];
            DIGSource[pass] = that.DIGSource[pass];
 
            Shader[pass] = that.Shader[pass];
            REF_PTR_SET(Material[pass],that.Material[pass]);
 
            // make our own arrays of shaders and vertex material pointers
            // NOTE: We don't just add-ref these arrays, we make our own copies.
            // The only time we add-ref these arrays are when we make alternate material
            // representations within this mesh... Then we re-use the same arrays in different
            // passes...
            REF_PTR_RELEASE(MaterialArray[pass]);
            if (that.MaterialArray[pass]) {
                MaterialArray[pass] = NEW_REF(MatBufferClass,(*that.MaterialArray[pass]));
            }
            REF_PTR_RELEASE(ShaderArray[pass]);
            if (that.ShaderArray[pass]) {
                ShaderArray[pass] = NEW_REF(ShareBufferClass<ShaderClass>,(*that.ShaderArray[pass]));
            }
        }
    }
    return *this;
}
 
MeshMatDescClass::~MeshMatDescClass(void)
{
    Reset(0,0,0);
}
 
TextureClass * MeshMatDescClass::Get_Single_Texture(int pass,int stage) const
{
    if (Texture[pass][stage]) {
        Texture[pass][stage]->Add_Ref();
    }
    return Texture[pass][stage];
}
 
void MeshMatDescClass::Reset(int polycount,int vertcount,int passcount)
{
    PolyCount = polycount;
    VertexCount = vertcount;
    PassCount = passcount;
 
    for (int array=0; array<MAX_COLOR_ARRAYS; array++) {
        REF_PTR_RELEASE(ColorArray[array]);
    }
 
    for (int uvarray=0; uvarray<MAX_UV_ARRAYS; uvarray++) {
        REF_PTR_RELEASE(UV[uvarray]);
    }
 
    for (int pass=0;pass<MAX_PASSES;pass++) {
        for (int stage=0; stage < MAX_TEX_STAGES; stage++) {
            UVSource[pass][stage] = -1;
            REF_PTR_RELEASE(Texture[pass][stage]);
            REF_PTR_RELEASE(TextureArray[pass][stage]);
        }
 
        DCGSource[pass] = VertexMaterialClass::MATERIAL;
        DIGSource[pass] = VertexMaterialClass::MATERIAL;
        Shader[pass] = 0;
        REF_PTR_RELEASE(ShaderArray[pass]);
 
        REF_PTR_RELEASE(Material[pass]);
        REF_PTR_RELEASE(MaterialArray[pass]);
 
    }
}
 
void MeshMatDescClass::Init_Alternate(MeshMatDescClass & default_materials,MeshMatDescClass & alternate_materials)
{
    // just copy the counts
    PassCount = default_materials.PassCount;
    VertexCount = default_materials.VertexCount;
    PolyCount = default_materials.PolyCount;
 
    // Color arrays
    for (int array=0; array<MAX_COLOR_ARRAYS; array++) {
        if (alternate_materials.ColorArray[array] != NULL) {
            REF_PTR_SET(ColorArray[array],alternate_materials.ColorArray[array]);
        } else {
            REF_PTR_SET(ColorArray[array],default_materials.ColorArray[array]);
        }
    }
 
    // Copy the uv-arrays from the alternate materials to start.  Needed uv arrays from
    // the default material set will be brought over as encountered below
    for (int i=0; i<alternate_materials.Get_UV_Array_Count(); i++) {
        REF_PTR_SET(UV[i],alternate_materials.UV[i]);
    }
 
    // add-ref the arrays in default_materials except when the same array is present in alternate_materials
    for (int pass = 0; pass < MAX_PASSES; pass++) {
        for (int stage = 0; stage < MAX_TEX_STAGES; stage++) {
 
            // UV Coorindate arrays, Each UVSource[pass][stage] which is -1 in the alternate_materials
            // but not -1 in the default_materials causes us to copy over a uv array from the default_materials
            // and set its index into our UVSource array.
            if (alternate_materials.UVSource[pass][stage] == -1) {
                if (default_materials.UVSource[pass][stage] != -1) {
 
                    // Look up the uv array in default_materials that we need to bring over.
                    int default_uv_source = default_materials.UVSource[pass][stage];
                    UVBufferClass * uvarray = default_materials.UV[default_uv_source];
                    int found_index = -1;
 
                    // Check if we already have it.
                    for (int i=0; i<Get_UV_Array_Count(); i++) {
                        if (uvarray->Get_CRC() == UV[i]->Get_CRC()) {
                            found_index = i;
                            break;
                        }
                    }
 
                    // If we already have it, just set the source index.  Otherwise add-ref it
                    // into a new slot in our uv array and set that index.
                    if (found_index != -1) {
                        UVSource[pass][stage] = found_index;
                    } else {
                        int new_index = Get_UV_Array_Count();
                        REF_PTR_SET(UV[new_index],default_materials.UV[default_uv_source]);
                        UVSource[pass][stage] = new_index;
                    }
                }
            } else {
                UVSource[pass][stage] = alternate_materials.UVSource[pass][stage];
            }
 
            // Texture pointer(s):  If alternate_materials has either a single texture or an array of textures,
            // then add-ref only the texture data it contains.  Otherwise, add-ref the data in default_materials.
            if ((alternate_materials.Texture[pass][stage] != NULL) || (alternate_materials.TextureArray[pass][stage])) {
                REF_PTR_SET(Texture[pass][stage] , alternate_materials.Texture[pass][stage]);
                REF_PTR_SET(TextureArray[pass][stage] , alternate_materials.TextureArray[pass][stage]);
            } else {
                REF_PTR_SET(Texture[pass][stage] , default_materials.Texture[pass][stage]);
                REF_PTR_SET(TextureArray[pass][stage] , default_materials.TextureArray[pass][stage]);
            }
        }
 
        // Vertex color configuration
        if (alternate_materials.DCGSource[pass] == VertexMaterialClass::MATERIAL) {
            DCGSource[pass] = default_materials.DCGSource[pass];
        } else {
            DCGSource[pass] = alternate_materials.DCGSource[pass];
        }
 
        // Shaders, currently I can't tell if the alternate data has a shader...  Can't override the shader for now.
        Shader[pass] = default_materials.Shader[pass];
        REF_PTR_SET(ShaderArray[pass],default_materials.ShaderArray[pass]);
 
        // Vertex Materials.  If alternate_materials has either a single or array of materials, then copy them
        if ((alternate_materials.Material[pass] != NULL) || (alternate_materials.MaterialArray[pass] != NULL)) {
            REF_PTR_SET(Material[pass],alternate_materials.Material[pass]);
            REF_PTR_SET(MaterialArray[pass],alternate_materials.MaterialArray[pass]);
        } else {
            // Dont share vertex materials! (because the UVSources can be different!)
            if (default_materials.Material[pass]) {
                Material[pass] = NEW_REF(VertexMaterialClass,(*(default_materials.Material[pass])));
            } else {
                if (default_materials.MaterialArray[pass]) {
                    WWDEBUG_SAY(("Unimplemented case: mesh has more than one default vertex material but no alternate vertex materials have been defined.\r\n"));
                }
                Material[pass] = NULL;
            }
        }
    }
}
 
bool MeshMatDescClass::Is_Empty(void)
{
    for (int array=0; array<MAX_COLOR_ARRAYS; array++) {
        if (ColorArray[array] != NULL) return false;
    }
 
    for (int uvarray=0; uvarray<MAX_UV_ARRAYS; uvarray++) {
        if (UV[uvarray] != NULL) return false;
    }
 
    for (int pass=0; pass<MAX_PASSES; pass++) {
        for (int stage=0; stage<MAX_TEX_STAGES; stage++) {
            if (Texture[pass][stage] != NULL) return false;
            if (TextureArray[pass][stage] != NULL) return false;
        }
 
//      if (UVIndex[pass] != NULL) return false;
        if (Material[pass] != NULL) return false;
        if (MaterialArray[pass] != NULL) return false;
 
    }
 
    return true;
}
 
void MeshMatDescClass::Set_Single_Material(VertexMaterialClass * vmat,int pass)
{
    REF_PTR_SET(Material[pass],vmat);
}
 
void MeshMatDescClass::Set_Single_Texture(TextureClass * tex,int pass,int stage)
{
    REF_PTR_SET(Texture[pass][stage],tex);
}
 
void MeshMatDescClass::Set_Single_Shader(ShaderClass shader,int pass)
{
    Shader[pass] = shader;
}
 
void MeshMatDescClass::Set_Material(int vidx,VertexMaterialClass * vmat,int pass)
{
    MatBufferClass * mats = Get_Material_Array(pass,true);
    mats->Set_Element(vidx,vmat);
}
 
void MeshMatDescClass::Set_Shader(int pidx,ShaderClass shader,int pass)
{
    ShaderClass * shaders = Get_Shader_Array(pass,true);
    shaders[pidx] = shader;
}
 
void MeshMatDescClass::Set_Texture(int pidx,TextureClass * tex,int pass,int stage)
{
    TexBufferClass * textures = Get_Texture_Array(pass,stage,true);
    textures->Set_Element(pidx,tex);
}
 
VertexMaterialClass * MeshMatDescClass::Get_Material(int vidx,int pass) const
{
    if (MaterialArray[pass]) {
 
        return MaterialArray[pass]->Get_Element(vidx);
 
    } else if (Material[pass] != NULL) {
 
        Material[pass]->Add_Ref();
        return Material[pass];
 
    }
    return NULL;
}
 
ShaderClass  MeshMatDescClass::Get_Shader(int pidx,int pass) const
{
    if (ShaderArray[pass]) {
        return ShaderArray[pass]->Get_Element(pidx);
    }
    return Shader[pass];
}
 
TextureClass * MeshMatDescClass::Get_Texture(int pidx,int pass,int stage) const
{
    if (TextureArray[pass][stage]) {
 
        return TextureArray[pass][stage]->Get_Element(pidx);
 
    } else if (Texture[pass][stage] != NULL) {
 
        Texture[pass][stage]->Add_Ref();
        return Texture[pass][stage];
 
    }
    return NULL;
}
 
VertexMaterialClass * MeshMatDescClass::Peek_Material(int vidx,int pass) const
{
    if (MaterialArray[pass]) {
        return MaterialArray[pass]->Peek_Element(vidx);
    }
    return Material[pass];
}
 
TextureClass * MeshMatDescClass::Peek_Texture(int pidx,int pass,int stage) const
{
    if (TextureArray[pass][stage]) {
        return TextureArray[pass][stage]->Peek_Element(pidx);
    }
    return Texture[pass][stage];
}
 
TexBufferClass * MeshMatDescClass::Get_Texture_Array(int pass,int stage,bool create)
{
    if (create && TextureArray[pass][stage] == NULL) {
        TextureArray[pass][stage] = NEW_REF(TexBufferClass,(PolyCount, "MeshMatDescClass::TextureArray"));
    }
    return TextureArray[pass][stage];
}
 
MatBufferClass * MeshMatDescClass::Get_Material_Array(int pass,bool create)
{
    if (create && MaterialArray[pass] == NULL) {
        MaterialArray[pass] = NEW_REF(MatBufferClass,(VertexCount, "MeshMatDescClass::MaterialArray"));
    }
    return MaterialArray[pass];
}
 
ShaderClass * MeshMatDescClass::Get_Shader_Array(int pass,bool create)
{
    if (create && ShaderArray[pass] == NULL) {
        ShaderArray[pass] = NEW_REF(ShareBufferClass<ShaderClass>,(PolyCount, "MeshMatDescClass::ShaderArray"));
        ShaderArray[pass]->Clear();
    }
    if (ShaderArray[pass]) {
        return ShaderArray[pass]->Get_Array();
    }
    return NULL;
}
 
void MeshMatDescClass::Make_UV_Array_Unique(int pass,int stage)
{
    int uvindex = UVSource[pass][stage];
    if (UV[uvindex]->Num_Refs() > 1) {
        UVBufferClass * unique_uv = NEW_REF(UVBufferClass,(*UV[uvindex]));
        UV[uvindex]->Release_Ref();
        UV[uvindex] = unique_uv;
    }
}
 
void MeshMatDescClass::Make_Color_Array_Unique(int array)
{
    if ((ColorArray[array] != NULL) && (ColorArray[array]->Num_Refs() > 1)) {
        ShareBufferClass<unsigned> * unique_color_array = NEW_REF(ShareBufferClass<unsigned>,(*ColorArray[array]));
        ColorArray[array]->Release_Ref();
        ColorArray[array] = unique_color_array;
    }
}
 
void MeshMatDescClass::Install_UV_Array(int pass,int stage,Vector2 * uvs,int count)
{
    /*
    ** Compute the crc of this uv array
    */
    unsigned int crc = CRC_Memory((unsigned char *)uvs,count * sizeof(Vector2));
 
    /*
    ** See if there is an existing uv-array that matches the one just loaded
    */
    bool found = false;
 
    for (int i=0; i<Get_UV_Array_Count(); i++) {
        if (UV[i]->Get_CRC() == crc) {
            found = true;
            Set_UV_Source(pass,stage,i);
            break;
        }
    }
 
    /*
    ** If there was no existing uv array, install this one
    */
    if (found == false) {
 
        /*
        ** Find the first empty UV-array slot
        */
        int new_index = 0;
        while ((UV[new_index] != NULL) && (new_index < MAX_UV_ARRAYS)) {
            new_index++;
        }
 
        if (new_index < MAX_UV_ARRAYS) {
 
            WWASSERT(UV[new_index] == NULL);
            UV[new_index] = NEW_REF(UVBufferClass,(count, "MeshMatDescClass::UV"));
            memcpy(UV[new_index]->Get_Array(),uvs,count * sizeof(Vector2));
            UV[new_index]->Update_CRC();  // update the crc for future comparision
            Set_UV_Source(pass,stage,new_index);
        }
    }
}
 
 
void MeshMatDescClass::Post_Load_Process(bool lighting_enabled,MeshModelClass * parent)
{
    /*
    ** Configure all vertex materials to source the uv coordinates and colors from the correct arrays
    ** Pre-multiply the vertex color arrays.
    */
    bool set_lighting_to_false=true;
    for (int pass=0; pass<PassCount; pass++) {
 
        /*
        ** If this pass doesn't have a vertex material, create one
        */
        if ((Material[pass] == NULL) && (MaterialArray[pass] == NULL)) {
            Material[pass] = NEW_REF(VertexMaterialClass,());
        }
 
        /*
        ** Configure the materials to source the uv coordinates and colors
        */
        if (Material[pass] != NULL) {
 
            Configure_Material(Material[pass],pass,lighting_enabled);
 
        } else {
            VertexMaterialClass * prev_mtl = NULL;
            VertexMaterialClass * mtl = Peek_Material(pass,0);
 
            for (int vidx=0; vidx<VertexCount; vidx++) {
 
                mtl = Peek_Material(vidx,pass);
                if ((mtl != prev_mtl) && (mtl != NULL)) {
                    Configure_Material(mtl,pass,lighting_enabled);
                    prev_mtl = mtl;
                }
            }
        }
 
        // Analyze material array types and apply hacks for supporting SR-lighting pipeline if possible.
 
        if (!ColorArray[0] && !ColorArray[1]) continue; // If no color arrays, we don't have a problem
 
        Vector3 single_diffuse(0.0f,0.0f,0.0f);
        Vector3 single_ambient(0.0f,0.0f,0.0f);
        Vector3 single_emissive(0.0f,0.0f,0.0f);
        float single_opacity=1.0f;
        bool single_diffuse_used=true;
        bool single_ambient_used=true;
        bool single_emissive_used=true;
        bool single_opacity_used=true;
        bool diffuse_used=false;
        bool ambient_used=false;
        bool emissive_used=false;
        bool opacity_used=false;
 
        Vector3 mtl_diffuse;
        Vector3 mtl_ambient;
        Vector3 mtl_emissive;
        float mtl_opacity = 1.0f;
 
        VertexMaterialClass * prev_mtl = NULL;
        VertexMaterialClass * mtl = Peek_Material(0, pass);
        if (mtl) {
            mtl->Get_Diffuse(&single_diffuse);
            single_opacity = mtl->Get_Opacity();
            mtl->Get_Ambient(&single_ambient);
            mtl->Get_Emissive(&single_emissive);
 
            if (single_diffuse.X || single_diffuse.Y || single_diffuse.Z) diffuse_used=true;
            if (single_ambient.X || single_ambient.Y || single_ambient.Z) ambient_used=true;
            if (single_emissive.X || single_emissive.Y || single_emissive.Z) emissive_used=true;
            if (single_opacity!=1.0f) opacity_used=true;
        }
 
        for (int vidx=0; vidx<VertexCount; vidx++) {
            mtl = Peek_Material(vidx,pass);
            if (mtl != prev_mtl) {
                prev_mtl = mtl;
                mtl->Get_Diffuse(&mtl_diffuse);
                mtl_opacity = mtl->Get_Opacity();
                mtl->Get_Ambient(&mtl_ambient);
                mtl->Get_Emissive(&mtl_emissive);
            }
 
            if (mtl_diffuse.X!=single_diffuse.X || mtl_diffuse.Y!=single_diffuse.Y || mtl_diffuse.Z!=single_diffuse.Z) {
                single_diffuse_used=false;
            }
            if (mtl_ambient.X!=single_ambient.X || mtl_ambient.Y!=single_ambient.Y || mtl_ambient.Z!=single_ambient.Z) {
                single_ambient_used=false;
            }
            if (mtl_emissive.X!=single_emissive.X || mtl_emissive.Y!=single_emissive.Y || mtl_emissive.Z!=single_emissive.Z) {
                single_emissive_used=false;
            }
            if (mtl_opacity!=single_opacity) {
                single_opacity_used=false;
            }
 
            if (mtl_diffuse.X || mtl_diffuse.Y || mtl_diffuse.Z) diffuse_used=true;
            if (mtl_ambient.X || mtl_ambient.Y || mtl_ambient.Z) ambient_used=true;
            if (mtl_emissive.X || mtl_emissive.Y || mtl_emissive.Z) emissive_used=true;
            if (mtl_opacity!=1.0f) opacity_used=true;
 
        }
 
        // If both DCG and DIG arrays are submitted, multiply them together to DCG channel
        if ((DCGSource[pass] != VertexMaterialClass::MATERIAL) && (ColorArray[0] != NULL) &&
             (DIGSource[pass] != VertexMaterialClass::MATERIAL) && (ColorArray[1] != NULL)) {
            unsigned * diffuse_array = ColorArray[0]->Get_Array();
            unsigned * emissive_array = ColorArray[1]->Get_Array();
 
            for (int vidx=0; vidx<VertexCount; vidx++) {
                Vector4 diffuse=DX8Wrapper::Convert_Color(diffuse_array[vidx]);
                Vector4 emissive=DX8Wrapper::Convert_Color(emissive_array[vidx]);
                diffuse.X *= emissive.X;
                diffuse.Y *= emissive.Y;
                diffuse.Z *= emissive.Z;
                diffuse_array[vidx]=DX8Wrapper::Convert_Color(diffuse);
            }
        }
        DIGSource[pass]=VertexMaterialClass::MATERIAL;    // DIG channel no more
 
        if ((DCGSource[pass] != VertexMaterialClass::MATERIAL) && (ColorArray[0] != NULL)) {
            unsigned * diffuse_array = ColorArray[0]->Get_Array();
            Vector3 mtl_diffuse;
            float mtl_opacity = 1.0f;
 
            VertexMaterialClass * prev_mtl = NULL;
            VertexMaterialClass * mtl = Peek_Material(0,pass);
 
            for (int vidx=0; vidx<VertexCount; vidx++) {
 
                mtl = Peek_Material(vidx,pass);
                if (mtl != prev_mtl) {
                    prev_mtl = mtl;
                    mtl->Get_Diffuse(&mtl_diffuse);
                    mtl_opacity = mtl->Get_Opacity();
                }
 
                // If only diffuse is used apply diffuse to color channel and set diffuse source to color 1
                if (diffuse_used && !ambient_used && !emissive_used) {
                    Vector4 diffuse=DX8Wrapper::Convert_Color(diffuse_array[vidx]);
                    diffuse.X *= mtl_diffuse.X;
                    diffuse.Y *= mtl_diffuse.Y;
                    diffuse.Z *= mtl_diffuse.Z;
                    diffuse.W *= mtl_opacity;
                    diffuse_array[vidx]=DX8Wrapper::Convert_Color(diffuse);
 
                    mtl->Set_Ambient_Color_Source(VertexMaterialClass::MATERIAL);
                    mtl->Set_Diffuse_Color_Source(VertexMaterialClass::COLOR1);
                    mtl->Set_Emissive_Color_Source(VertexMaterialClass::MATERIAL);
                }
 
                // If diffuse and ambient are used, apply diffuse to color channel and set diffuse
                // and ambient sources to color 1. (this is not completely correct if diffuse and
                // ambient are different but is probably the most reasonable thing to do. Why set
                // diffuse and ambient differently anyway?)
                if (diffuse_used && ambient_used && !emissive_used) {
                    Vector4 diffuse=DX8Wrapper::Convert_Color(diffuse_array[vidx]);
                    diffuse.X *= mtl_diffuse.X;
                    diffuse.Y *= mtl_diffuse.Y;
                    diffuse.Z *= mtl_diffuse.Z;
                    diffuse.W *= mtl_opacity;
                    diffuse_array[vidx]=DX8Wrapper::Convert_Color(diffuse);
 
                    mtl->Set_Ambient_Color_Source(VertexMaterialClass::COLOR1);
                    mtl->Set_Diffuse_Color_Source(VertexMaterialClass::COLOR1);
                    mtl->Set_Emissive_Color_Source(VertexMaterialClass::MATERIAL);
                }
 
                // If only ambient is used apply ambient to color channel and set ambient source to color 1
                if (!diffuse_used && ambient_used && !emissive_used) {
                    Vector4 diffuse=DX8Wrapper::Convert_Color(diffuse_array[vidx]);
                    diffuse.X *= mtl_ambient.X;
                    diffuse.Y *= mtl_ambient.Y;
                    diffuse.Z *= mtl_ambient.Z;
                    diffuse.W *= mtl_opacity;
                    diffuse_array[vidx]=DX8Wrapper::Convert_Color(diffuse);
 
                    mtl->Set_Ambient_Color_Source(VertexMaterialClass::COLOR1);
                    mtl->Set_Diffuse_Color_Source(VertexMaterialClass::MATERIAL);
                    mtl->Set_Emissive_Color_Source(VertexMaterialClass::MATERIAL);
                }
 
                // If only emissive is used apply emissive to color channel, set diffuse source to color 1, and turn off lighting
                if (!diffuse_used && !ambient_used && emissive_used) {
                    Vector4 diffuse=DX8Wrapper::Convert_Color(diffuse_array[vidx]);
                    diffuse.X *= mtl_emissive.X;
                    diffuse.Y *= mtl_emissive.Y;
                    diffuse.Z *= mtl_emissive.Z;
                    diffuse.W *= mtl_opacity;
                    diffuse_array[vidx]=DX8Wrapper::Convert_Color(diffuse);
 
                    mtl->Set_Ambient_Color_Source(VertexMaterialClass::MATERIAL);
                    mtl->Set_Diffuse_Color_Source(VertexMaterialClass::COLOR1);
                    mtl->Set_Emissive_Color_Source(VertexMaterialClass::MATERIAL);
//                  mtl->Set_Lighting(false);
                }
                else {
                    if (PassCount!=1) {
                        set_lighting_to_false=false;        // Lighting can only be set to false if ALL passes and ALL materials are requesting it
                    }
                }
            }
        }
    }
 
 
    /*
    ** HACK: Kill BUMPENV passes on hardware that doesn't support BUMPENV
    ** HACK: Set lighting to false on all passes if all passes are of type NO DIFFUSE, NO AMBIENT, YES EMISSIVE
    */
    for (pass=0; pass<PassCount; pass++) {
        bool kill_pass = false;
 
        /*
        // HY: Earth and beyond uses a different fallback from Renegade with regards to bump environment maps
        // we keep the pass but change it to an unbumped environment
        if ( (Shader[pass].Get_Primary_Gradient() == ShaderClass::GRADIENT_BUMPENVMAP) &&
              (!DX8Wrapper::Is_Initted() || DX8Wrapper::Get_Current_Caps()->Support_Bump_Envmap() == false) )
        {
            kill_pass = true;
        }
 
        if ( (Shader[pass].Get_Primary_Gradient() == ShaderClass::GRADIENT_BUMPENVMAPLUMINANCE) &&
              (!DX8Wrapper::Is_Initted() || DX8Wrapper::Get_Current_Caps()->Support_Bump_Envmap_Luminance() == false) )
        {
            kill_pass = true;
        }
        */
 
        if (kill_pass) {
            if (Material[pass] != NULL) {
                Material[pass]->Set_Ambient(0,0,0);
                Material[pass]->Set_Diffuse(0,0,0);
                Material[pass]->Set_Emissive(0,0,0);
                Material[pass]->Set_Specular(0,0,0);
            }
 
            Shader[pass].Set_Texturing(ShaderClass::TEXTURING_DISABLE);
            Shader[pass].Set_Post_Detail_Color_Func(ShaderClass::DETAILCOLOR_DISABLE);
            Shader[pass].Set_Post_Detail_Alpha_Func(ShaderClass::DETAILALPHA_DISABLE);
        }
        // Set lighting to false if requested in all passes...
        else if (set_lighting_to_false) {
            Vector3 single_diffuse(0.0f,0.0f,0.0f);
            Vector3 single_ambient(0.0f,0.0f,0.0f);
            Vector3 single_emissive(0.0f,0.0f,0.0f);
            bool diffuse_used=false;
            bool ambient_used=false;
            bool emissive_used=false;
 
            Vector3 mtl_diffuse;
            Vector3 mtl_ambient;
            Vector3 mtl_emissive;
 
            VertexMaterialClass * prev_mtl = NULL;
            VertexMaterialClass * mtl = Peek_Material(0, pass);
            if (mtl) {
                mtl->Get_Diffuse(&single_diffuse);
                mtl->Get_Ambient(&single_ambient);
                mtl->Get_Emissive(&single_emissive);
 
                if (single_diffuse.X || single_diffuse.Y || single_diffuse.Z) diffuse_used=true;
                if (single_ambient.X || single_ambient.Y || single_ambient.Z) ambient_used=true;
                if (single_emissive.X || single_emissive.Y || single_emissive.Z) emissive_used=true;
            }
 
            for (int vidx=0; vidx<VertexCount; vidx++) {
                mtl = Peek_Material(vidx,pass);
                if (mtl != prev_mtl) {
                    prev_mtl = mtl;
                    mtl->Get_Diffuse(&mtl_diffuse);
                    mtl->Get_Ambient(&mtl_ambient);
                    mtl->Get_Emissive(&mtl_emissive);
                }
 
                if (mtl_diffuse.X || mtl_diffuse.Y || mtl_diffuse.Z) diffuse_used=true;
                if (mtl_ambient.X || mtl_ambient.Y || mtl_ambient.Z) ambient_used=true;
                if (mtl_emissive.X || mtl_emissive.Y || mtl_emissive.Z) emissive_used=true;
            }
 
            if ((DCGSource[pass] != VertexMaterialClass::MATERIAL) && (ColorArray[0] != NULL)) {
                VertexMaterialClass * prev_mtl = NULL;
                VertexMaterialClass * mtl = Peek_Material(0,pass);
                for (int vidx=0; vidx<VertexCount; vidx++) {
                    mtl = Peek_Material(vidx,pass);
                    if (mtl != prev_mtl) {
                        prev_mtl = mtl;
                        // If only emissive is used apply emissive to color channel, set diffuse source to color 1, and turn off lighting
                        if (!diffuse_used && !ambient_used && emissive_used) {
                            mtl->Set_Lighting(false);
                        }
                    }
                }
            }
        }
    }   
}
 
void MeshMatDescClass::Configure_Material(VertexMaterialClass * mtl,int pass,bool lighting_enabled)
{
    mtl->Set_Diffuse_Color_Source(DCGSource[pass]);
    mtl->Set_Emissive_Color_Source(DIGSource[pass]);
 
    mtl->Set_Lighting(lighting_enabled);
 
    for (int stage=0; stage<MAX_TEX_STAGES; stage++) {
        int src = UVSource[pass][stage];
        if (src == -1) {
            src = 0;
        }
        mtl->Set_UV_Source(stage,src);
    }
}
 
bool MeshMatDescClass::Do_Mappers_Need_Normals(void)
{
    if (DX8Wrapper::Is_Initted() && DX8Wrapper::Get_Current_Caps()->Support_NPatches() && WW3D::Get_NPatches_Level()>1) return true;
 
    for (int pass=0; pass<PassCount; pass++) {
        /*
        ** Check the materials on this pass to see if any have mappers which require normals
        */
        if (Material[pass] != NULL) {
 
            if (Material[pass]->Do_Mappers_Need_Normals()) return true;
 
        } else {
            VertexMaterialClass * prev_mtl = NULL;
            VertexMaterialClass * mtl = Peek_Material(pass,0);
 
            for (int vidx=0; vidx<VertexCount; vidx++) {
 
                mtl = Peek_Material(vidx,pass);
                if ((mtl != prev_mtl) && (mtl != NULL)) {
 
                    if (mtl->Do_Mappers_Need_Normals()) return true;
                    prev_mtl = mtl;
                }
            }
        }
    }
 
    return false;
}