//-----------------------------------------------------------------------------
// allocVertexBuffer
//-----------------------------------------------------------------------------
GFXVertexBuffer * GFXD3D9Device::allocVertexBuffer( U32 numVerts,
const GFXVertexFormat *vertexFormat,
U32 vertSize,
GFXBufferType bufferType )
{
GFXD3D9VertexBuffer *res = new GFXD3D9VertexBuffer( this, numVerts, vertexFormat, vertSize, bufferType );
// Determine usage flags
U32 usage = 0;
D3DPOOL pool = D3DPOOL_DEFAULT;
res->mNumVerts = 0;
// Assumptions:
// - static buffers are write once, use many
// - dynamic buffers are write many, use many
// - volatile buffers are write once, use once
// You may never read from a buffer.
switch(bufferType)
{
case GFXBufferTypeStatic:
pool = D3DPOOL_MANAGED;
res->registerResourceWithDevice(this);
break;
case GFXBufferTypeDynamic:
case GFXBufferTypeVolatile:
pool = D3DPOOL_DEFAULT;
res->registerResourceWithDevice(this);
usage |= D3DUSAGE_WRITEONLY;
#ifndef TORQUE_OS_XENON
usage |= D3DUSAGE_DYNAMIC;
#endif
break;
}
// Create vertex buffer
if(bufferType == GFXBufferTypeVolatile)
{
// Get volatile stuff from a pool...
AssertFatal( numVerts <= MAX_DYNAMIC_VERTS, "Cannot allocate that many verts in a volatile vertex buffer, increase MAX_DYNAMIC_VERTS! -- BJG" );
// This is all we need here, everything else lives in the lock method on the
// buffer... -- BJG
}
else
{
allocVertexDecl( res );
// Get a new buffer...
D3D9Assert( mD3DDevice->CreateVertexBuffer( vertSize * numVerts, usage, 0, pool, &res->vb, NULL ),
"Failed to allocate VB" );
}
res->mNumVerts = numVerts;
return res;
}
//-----------------------------------------------------------------------------
// allocVertexBuffer
//-----------------------------------------------------------------------------
GFXVertexBuffer * GFXD3D9Device::allocVertexBuffer( U32 numVerts,
const GFXVertexFormat *vertexFormat,
U32 vertSize,
GFXBufferType bufferType )
{
PROFILE_SCOPE( GFXD3D9Device_allocVertexBuffer );
GFXD3D9VertexBuffer *res = new GFXD3D9VertexBuffer( this,
numVerts,
vertexFormat,
vertSize,
bufferType );
// Determine usage flags
U32 usage = 0;
D3DPOOL pool = D3DPOOL_DEFAULT;
res->mNumVerts = 0;
// Assumptions:
// - static buffers are write once, use many
// - dynamic buffers are write many, use many
// - volatile buffers are write once, use once
// You may never read from a buffer.
switch(bufferType)
{
case GFXBufferTypeStatic:
pool = isD3D9Ex() ? D3DPOOL_DEFAULT : D3DPOOL_MANAGED;
break;
case GFXBufferTypeDynamic:
case GFXBufferTypeVolatile:
pool = D3DPOOL_DEFAULT;
usage |= D3DUSAGE_WRITEONLY;
#ifndef TORQUE_OS_XENON
usage |= D3DUSAGE_DYNAMIC;
#endif
break;
}
res->registerResourceWithDevice(this);
// Create vertex buffer
if( bufferType == GFXBufferTypeVolatile )
{
// NOTE: Volatile VBs are pooled and will be allocated at lock time.
AssertFatal( numVerts <= MAX_DYNAMIC_VERTS,
"GFXD3D9Device::allocVertexBuffer - Volatile vertex buffer is too big... see MAX_DYNAMIC_VERTS!" );
}
else
{
// Requesting it will allocate it.
vertexFormat->getDecl();
// Get a new buffer...
D3D9Assert( mD3DDevice->CreateVertexBuffer( vertSize * numVerts, usage, 0, pool, &res->vb, NULL ),
"Failed to allocate VB" );
}
res->mNumVerts = numVerts;
return res;
}
