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AMesh.cpp

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/*
CS Senior Project 2003
Team : Leftfield
Project : ModernWarfare
Members :
- Russ Christensen              <rchriste@cs.utah.edu>
- Todd Smith                    <tcsmith@cs.utah.edu>
- Usit Duongsaa                 <duongsaa@cs.utah.edu>
Copyright 2003 Russ Christensen, Usit Duongsaa, and Todd Smith. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 
THIS SOFTWARE IS PROVIDED BY RUSS CHRISTENSEN, USIT DUONGSAA, AND TODD SMITH ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RUSS, USIT, TODD OR OTHER CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include "AEngine.h"
#include "AUtil.h"

//------------------------------------------------------------------------------------
//------------------------------------------------------------------------------------
class MeshRequestEntryComparer          
{
public:
        bool operator()(const MeshRenderRequestEntry &L, const MeshRenderRequestEntry &R )
        {
                return (L.texture*1000+L.bumpmap)*1000+L.mesh < (R.texture*1000+R.bumpmap)*1000+R.mesh;                 
        }
};
//------------------------------------------------------------------------------------
//------------------------------------------------------------------------------------
void mesh_init()
{
        if(AS.res_meshes.size()==0) return;

        // create Vertex&Index Buffer
        int vbByteSize = (int)AS.mesh_raw_vb.size() * sizeof(MeshVertex);
        int ibByteSize = (int)AS.mesh_raw_ib.size() * sizeof(USHORT);
        sys_console() << "Mesh : VertexBuffer Size = " << (int)AS.mesh_raw_vb.size() << endl;
        sys_console() << "Mesh : IndexBuffer  Size = " << (int)AS.mesh_raw_ib.size() << endl;

        AS.pDevice->CreateVertexBuffer( vbByteSize, D3DUSAGE_WRITEONLY, 0, D3DPOOL_MANAGED, &(AS.mesh_vb) );
        AS.pDevice->CreateIndexBuffer(  ibByteSize, D3DUSAGE_WRITEONLY, D3DFMT_INDEX16, D3DPOOL_MANAGED, &(AS.mesh_ib) );
        
        MeshVertex *pVBdata;
        USHORT     *pIBdata;
        if( FAILED( AS.mesh_vb->Lock(0,0, (BYTE**)&pVBdata, 0) )) throw Error("Can't Lock MeshVB");
        if( FAILED( AS.mesh_ib->Lock(0,0, (BYTE**)&pIBdata, 0) )) throw Error("Can't Lock MeshIB");

        memcpy( pVBdata, &(AS.mesh_raw_vb[0]), vbByteSize );
        memcpy( pIBdata, &(AS.mesh_raw_ib[0]), ibByteSize );    
        
        AS.mesh_vb->Unlock();
        AS.mesh_ib->Unlock();

        // create V&P Shaders
        AS.vshader_mesh = util_loadVertexShader( "shaders\\mesh.vso", dwMeshVertexDecl );
        AS.pshader_mesh = util_loadPixelShader(  "shaders\\mesh.pso" ); 
}
//------------------------------------------------------------------------------------
// add a request entry to the rendering list
void mesh_render( const AMesh mesh, const Vec3D pos, const Vec3D size, const Vec3D dir,
                                  const ATexture texture, const ATexture bumpmap, const Vec3D stripColor )
{
        AS.mesh_renderList.push_back( MeshRenderRequestEntry(mesh,pos,size,dir,
                                                                                                                 texture,bumpmap,stripColor) ); 
}
//------------------------------------------------------------------------------------
void mesh_flush()
{
        AS.mesh_renderList.resize(0);
}
//------------------------------------------------------------------------------------
// process all stock-up requests
void mesh_processRenderRequests()
{
        if(AS.res_meshes.size()==0) return;
        if(AS.mesh_renderList.size()==0) return;

        device_setVertexShader( AS.vshader_mesh );
        device_setPixelShader(  AS.pshader_mesh );
        device_setStreamSource( 0, AS.mesh_vb, sizeof(MeshVertex) );
        device_setIndexSource( AS.mesh_ib );
        device_setRenderState( D3DRS_ZENABLE,  TRUE );
        device_setRenderState( D3DRS_ZWRITEENABLE,  TRUE );
        device_setRenderState( D3DRS_SPECULARENABLE, FALSE );
        device_setTextureStageState( 0, D3DTSS_MAGFILTER, D3DTEXF_LINEAR );
        device_setTextureStageState( 0, D3DTSS_MINFILTER, D3DTEXF_LINEAR );
        device_setTextureStageState( 0, D3DTSS_MIPFILTER, D3DTEXF_LINEAR );

        device_setRenderState( D3DRS_CULLMODE, D3DCULL_NONE );
        device_setRenderStateBlendMode( BlendModes::NONE );

        sort(AS.mesh_renderList.begin(), AS.mesh_renderList.end(), MeshRequestEntryComparer());

        Matx matTrans, matScale, matTheta, matFinal, matLighting;
        int last = (int)AS.mesh_renderList.size();

        
        for( int i=0; i<last; i++ )
        {
                MeshRenderRequestEntry &e = AS.mesh_renderList[i];
                MeshEntry &m = AS.res_meshes[e.mesh];
                
                // construct xform matrix
                D3DXMatrixTranslation( &matTrans, e.pos[0], e.pos[1], e.pos[2] );
                D3DXMatrixRotationZ( &matTheta, D3DXToRadian(e.dir[0]) );
                D3DXMatrixScaling( &matScale, e.size[0]/m.size[0], e.size[1]/m.size[1], e.size[2]/m.size[2] );
                matFinal = matScale * matTheta * matTrans * AS.camera_world2projMatrix;
                D3DXMatrixTranspose( &matFinal, &matFinal);
                D3DXMatrixTranspose( &matLighting, &matTheta);

                AS.pDevice->SetVertexShaderConstant( 0, &matFinal, 4 );                 // world->proj matrix
                AS.pDevice->SetVertexShaderConstant( 4, &matLighting, 4 );              // rotate normals matrix

                FLOAT lightVec[4] = { 0.5882f, 0.1961f, 0.2843f, 0.0f };
                AS.pDevice->SetVertexShaderConstant( 8, &lightVec, 1 );

                FLOAT t = 0.4f;
                FLOAT ambient[4] = { t,t,t,0.0f };
                AS.pDevice->SetVertexShaderConstant( 9, &ambient, 1 );

                // strip color
                AS.pDevice->SetPixelShaderConstant( 0, &e.stripColor, 1 );

                // set texture & bumpmap
                device_setTexture( 0, AS.res_textures[e.texture] );
                if(e.bumpmap!=NULL)  device_setTexture( 0, AS.res_textures[e.bumpmap] );

                // let the hardware render
                AS.pDevice->DrawIndexedPrimitive( D3DPT_TRIANGLELIST, m.VBmin, m.VBcount, m.IBstart, m.TriCount );
        }       
}
//------------------------------------------------------------------------------------

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