public override HardwareVertexBuffer CreateVertexBuffer(VertexDeclaration vertexDeclaration, int numVerts,
BufferUsage usage, bool useShadowBuffer)
{
Contract.Requires(numVerts > 0);
#if AXIOM_D3D_MANAGE_BUFFERS
// Override shadow buffer setting; managed buffers are automatically
// backed by system memory
// Don't override shadow buffer if discardable, since then we use
// unmanaged buffers for speed (avoids write-through overhead)
if (useShadowBuffer && (usage & BufferUsage.Discardable) == 0)
{
useShadowBuffer = false;
// Also drop any WRITE_ONLY so we can read direct
if (usage == BufferUsage.DynamicWriteOnly)
{
usage = BufferUsage.Dynamic;
}
else if (usage == BufferUsage.StaticWriteOnly)
{
usage = BufferUsage.Static;
}
}
#endif
var vbuf = new D3D9HardwareVertexBuffer(this, vertexDeclaration, numVerts, usage, false, useShadowBuffer);
lock ( VertexBuffersMutex )
{
vertexBuffers.Add(vbuf);
}
return(vbuf);
}
public override HardwareVertexBuffer CreateVertexBuffer( VertexDeclaration vertexDeclaration, int numVerts,
BufferUsage usage, bool useShadowBuffer )
{
Contract.Requires( numVerts > 0 );
#if AXIOM_D3D_MANAGE_BUFFERS
// Override shadow buffer setting; managed buffers are automatically
// backed by system memory
// Don't override shadow buffer if discardable, since then we use
// unmanaged buffers for speed (avoids write-through overhead)
if ( useShadowBuffer && ( usage & BufferUsage.Discardable ) == 0 )
{
useShadowBuffer = false;
// Also drop any WRITE_ONLY so we can read direct
if ( usage == BufferUsage.DynamicWriteOnly )
{
usage = BufferUsage.Dynamic;
}
else if ( usage == BufferUsage.StaticWriteOnly )
{
usage = BufferUsage.Static;
}
}
#endif
var vbuf = new D3D9HardwareVertexBuffer( this, vertexDeclaration, numVerts, usage, false, useShadowBuffer );
lock ( VertexBuffersMutex )
{
vertexBuffers.Add( vbuf );
}
return vbuf;
}