public TerrainPatchBuilder( )
{
int numVertices = 0;
for ( int level = 0; level < MaxLodLevels; ++level )
{
numVertices += LevelPoolSize( level ) * NumberOfLevelVertices( level );
}
VertexBufferFormat format = new VertexBufferFormat( );
format.Add( VertexFieldSemantic.Position, VertexFieldElementTypeId.Float32, 3 );
format.Add( VertexFieldSemantic.Normal, VertexFieldElementTypeId.Float32, 3 );
GraphicsLog.Info( "Allocating terrain patch builder VBO: {0} vertices in format {1}", numVertices, format );
m_Buffer = Graphics.Factory.CreateVertexBuffer( );
m_Buffer.Create( format, numVertices );
int curVertexIndex = 0;
for ( int level = 0; level < MaxLodLevels; ++level )
{
Lod newLod = new Lod( );
m_LodLevels[ level ] = newLod;
int numLevelVertices = NumberOfLevelVertices( level );
int poolSize = LevelPoolSize( level );
for ( int poolIndex = 0; poolIndex < poolSize; ++poolIndex )
{
newLod.VbPool.Add( curVertexIndex );
curVertexIndex += numLevelVertices;
}
// NOTE: BP: BABY P SAYS HELLO
}
}
public SeaMesh( float width, float depth )
{
VertexBufferFormat vbFormat = new VertexBufferFormat( );
vbFormat.Add( VertexFieldSemantic.Position, VertexFieldElementTypeId.Float32, 3 );
vbFormat.Add( VertexFieldSemantic.Normal, VertexFieldElementTypeId.Float32, 3 );
m_Vertices = Graphics.Factory.CreateVertexBuffer( );
}
/// <summary>
/// Default constructor
/// </summary>
public TerrainPatchVertices( )
{
VertexBufferFormat format = new VertexBufferFormat( );
format.Add( VertexFieldSemantic.Position, VertexFieldElementTypeId.Float32, 3 );
format.Add( VertexFieldSemantic.Normal, VertexFieldElementTypeId.Float32, 3 );
format.Add( VertexFieldSemantic.Texture0, VertexFieldElementTypeId.Float32, 2 );
format.Add( VertexFieldSemantic.Texture1, VertexFieldElementTypeId.Float32, 2 );
GraphicsLog.Info( "Creating terrain patch vertex pool using format {0}", format );
m_Vb = Graphics.Factory.CreateVertexBuffer( );
m_Vb.Create( format, TerrainPatchConstants.PatchTotalVertexCount * PoolSize );
Clear( );
}
public PatchGrid( Terrain terrain, int gridWidth, int gridHeight )
{
int highestRes = Patch.GetLevelResolution( Patch.HighestDetailLod );
highestRes *= highestRes;
VertexBufferFormat format = new VertexBufferFormat( );
format.Add( VertexFieldSemantic.Position, VertexFieldElementTypeId.Float32, 3 );
m_Vb = RbGraphics.Factory.CreateVertexBuffer( );
m_Vb.Create( format, gridWidth * gridHeight * highestRes );
m_Patches = new Patch[ gridWidth, gridHeight ];
float z = -PatchDepth * ( gridHeight / 2 );
float xInc = PatchWidth;
float zInc = PatchDepth;
float maxWidth = gridWidth * PatchWidth;
float maxHeight = gridWidth * PatchDepth;
terrain.SetTerrainArea( maxWidth, maxHeight );
int vbOffset = 0;
for ( int row = 0; row < gridHeight; ++row, z += zInc )
{
float x = -PatchWidth * ( gridWidth / 2 );
for ( int col = 0; col < gridWidth; ++col, x += xInc )
{
Color c = ( ( col + row ) % 2 ) == 0 ? Color.Black : Color.White;
m_Patches[ col, row ] = new Patch( terrain, vbOffset, x, z, PatchWidth, PatchDepth, c );
vbOffset += highestRes;
}
}
int maxCol = gridWidth - 1;
int maxRow = gridHeight - 1;
for ( int row = 0; row < gridHeight; ++row )
{
for ( int col = 0; col < gridWidth; ++col )
{
Patch left = ( col == 0 ) ? null : ( m_Patches[ col - 1, row ] );
Patch right = ( col == maxCol ) ? null : ( m_Patches[ col + 1, row ] );
Patch up = ( row == 0 ) ? null : ( m_Patches[ col, row - 1] );
Patch down = ( row == maxRow ) ? null : ( m_Patches[ col, row + 1 ] );
m_Patches[ col, row ].Link( left, right, up, down );
}
}
}
public QuadPatchVertices( )
{
VertexBufferFormat format = new VertexBufferFormat( );
format.Add( VertexFieldSemantic.Position, VertexFieldElementTypeId.Float32, 3 );
m_Vb = Graphics.Factory.CreateVertexBuffer( );
m_Vb.Create( format, QuadPatch.PatchResolution * QuadPatch.PatchResolution * PoolSize );
int vertexIndex = 0;
for ( int i = 0; i < PoolSize; ++i )
{
m_FreeList.Add( vertexIndex );
vertexIndex += QuadPatch.PatchResolution * QuadPatch.PatchResolution;
}
}
private void BuildBuffers( int maxParticles )
{
m_MaxParticles = maxParticles;
m_Vb = Graphics.Factory.CreateVertexBuffer( );
VertexBufferFormat vbFormat = new VertexBufferFormat( );
vbFormat.Add( VertexFieldSemantic.Position, VertexFieldElementTypeId.Float32, 3 );
vbFormat.Add( VertexFieldSemantic.Texture0, VertexFieldElementTypeId.Float32, 2 );
vbFormat.Static = false;
m_Vb.Create( vbFormat, maxParticles * 4 );
m_Ib = Graphics.Factory.CreateIndexBuffer( );
ushort[] indices = new ushort[ maxParticles * 6 ];
int curIndex = 0;
ushort indexValue = 0;
for ( int particleCount = 0; particleCount < maxParticles; ++particleCount )
{
indices[ curIndex++ ] = indexValue;
indices[ curIndex++ ] = ( ushort )( indexValue + 1 );
indices[ curIndex++ ] = ( ushort )( indexValue + 3 );
indices[ curIndex++ ] = ( ushort )( indexValue + 1 );
indices[ curIndex++ ] = ( ushort )( indexValue + 2 );
indices[ curIndex++ ] = ( ushort )( indexValue + 3 );
indexValue += 4;
}
m_Ib.Create( indices, true );
}
/// <summary>
/// Creates a geo sphere
/// </summary>
private IRenderable CreateGeoSphere( Units.Metres radius, int subdivisions )
{
m_GeometryRadius = radius;
Vector3[] sideNormals = new Vector3[ 6 ]
{
new Vector3( 1, 0, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),
new Vector3( -1, 0, 0 ), new Vector3( 0, -1, 0 ), new Vector3( 0, 0, -1 )
};
VertexBufferFormat format = new VertexBufferFormat( );
format.Add<float>( VertexFieldSemantic.Position, 3 );
format.Add<float>( VertexFieldSemantic.Normal, 3 );
format.Add<float>( VertexFieldSemantic.Texture0, 2 );
float renderRadius = radius.ToRenderUnits;
float modelSideLength = 10.0f;
float uvMul = 1.0f / subdivisions;
VertexBufferBuilder vbBuilder = new VertexBufferBuilder( format );
for ( int sideNormalIndex = 0; sideNormalIndex < sideNormals.Length; ++sideNormalIndex )
{
Vector3 sideNormal = sideNormals[ sideNormalIndex ];
Vector3 xAxis = sideNormals[ ( sideNormalIndex + 1 ) % sideNormals.Length ];
Vector3 yAxis = sideNormals[ ( sideNormalIndex + 2 ) % sideNormals.Length ];
Vector3 xStride = xAxis * modelSideLength;
Vector3 yStride = yAxis * modelSideLength;
Vector3 xStep = xStride / subdivisions;
Vector3 yStep = yStride / subdivisions;
Point3 mid = Point3.Origin + sideNormal * modelSideLength / 2;
Point3 topLeft = mid - ( xStride / 2 ) - ( yStride / 2 );
Point3 sidePos = topLeft;
for ( int y = 0; y < subdivisions; ++y )
{
Point3 curPos = sidePos;
float v = y * uvMul;
float nV = ( y + 1 ) * uvMul;
for ( int x = 0; x < subdivisions; ++x )
{
Vector3 sphereNormal = curPos.ToVector3( ).MakeNormal( );
Vector3 sphereNxNormal = ( curPos + xStep ).ToVector3( ).MakeNormal( );
Vector3 sphereNyNormal = ( curPos + yStep ).ToVector3( ).MakeNormal( );
Vector3 sphereNxNyNormal = ( curPos + xStep + yStep ).ToVector3( ).MakeNormal( );
Point3 spherePos = ( sphereNormal * renderRadius ).ToPoint3( );
Point3 sphereNxPos = ( sphereNxNormal * renderRadius ).ToPoint3( );
Point3 sphereNyPos = ( sphereNyNormal * renderRadius ).ToPoint3( );
Point3 sphereNxNyPos = ( sphereNxNyNormal * renderRadius ).ToPoint3( );
float u = x * uvMul;
float nU = ( x + 1 ) * uvMul;
vbBuilder.Add( VertexFieldSemantic.Position, spherePos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, u, v );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNxPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNxNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, nU, v );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNyPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNyNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, u, nV );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNxPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNxNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, nU, v );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNxNyPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNxNyNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, nU, nV );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNyPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNyNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, u, nV );
curPos += xStep;
}
sidePos += yStep;
}
}
return new VertexBufferRenderer( vbBuilder.Build( ), PrimitiveType.TriList );
}