Method RenderMesh

framework/d3d11/amd_sdk/src/HelperFunctions.cpp:281–348

-------------------------------------------------------------------------------------- Allows the app to render individual meshes of an sdkmesh and override the primitive topology (useful for tessellated rendering of SDK meshes ) --------------------------------------------------------------------------------------

// and override the primitive topology (useful for tessellated rendering of SDK meshes )
//--------------------------------------------------------------------------------------
void AMD::RenderMesh( CDXUTSDKMesh* pDXUTMesh, UINT uMesh, D3D11_PRIMITIVE_TOPOLOGY PrimType,
    UINT uDiffuseSlot, UINT uNormalSlot, UINT uSpecularSlot )
{
#define MAX_D3D11_VERTEX_STREAMS D3D11_IA_VERTEX_INPUT_RESOURCE_SLOT_COUNT

    assert( NULL != pDXUTMesh );

    SDKMESH_MESH* pMesh = pDXUTMesh->GetMesh( uMesh );

    UINT Strides[MAX_D3D11_VERTEX_STREAMS];
    UINT Offsets[MAX_D3D11_VERTEX_STREAMS];
    ID3D11Buffer* pVB[MAX_D3D11_VERTEX_STREAMS];

    if (pMesh->NumVertexBuffers > MAX_D3D11_VERTEX_STREAMS)
    {
        return;
    }

    for (UINT64 i = 0; i < pMesh->NumVertexBuffers; i++)
    {
        pVB[i] = pDXUTMesh->GetVB11( uMesh, (UINT)i );
        Strides[i] = pDXUTMesh->GetVertexStride( uMesh, (UINT)i );
        Offsets[i] = 0;
    }

    ID3D11Buffer* pIB = pDXUTMesh->GetIB11( pMesh->IndexBuffer );
    DXGI_FORMAT ibFormat = pDXUTMesh->GetIBFormat11( pMesh->IndexBuffer );

    DXUTGetD3D11DeviceContext()->IASetVertexBuffers( 0, pMesh->NumVertexBuffers, pVB, Strides, Offsets );
    DXUTGetD3D11DeviceContext()->IASetIndexBuffer( pIB, ibFormat, 0 );

    SDKMESH_SUBSET* pSubset = NULL;
    SDKMESH_MATERIAL* pMat = NULL;

    for (UINT uSubset = 0; uSubset < pMesh->NumSubsets; uSubset++)
    {
        pSubset = pDXUTMesh->GetSubset( uMesh, uSubset );

        if (D3D11_PRIMITIVE_TOPOLOGY_UNDEFINED == PrimType)
        {
            PrimType = pDXUTMesh->GetPrimitiveType11( (SDKMESH_PRIMITIVE_TYPE)pSubset->PrimitiveType );
        }

        DXUTGetD3D11DeviceContext()->IASetPrimitiveTopology( PrimType );

        pMat = pDXUTMesh->GetMaterial( pSubset->MaterialID );
        if (uDiffuseSlot != INVALID_SAMPLER_SLOT && !IsErrorResource( pMat->pDiffuseRV11 ))
        {
            DXUTGetD3D11DeviceContext()->PSSetShaderResources( uDiffuseSlot, 1, &pMat->pDiffuseRV11 );
        }

        if (uNormalSlot != INVALID_SAMPLER_SLOT && !IsErrorResource( pMat->pNormalRV11 ))
        {
            DXUTGetD3D11DeviceContext()->PSSetShaderResources( uNormalSlot, 1, &pMat->pNormalRV11 );
        }

        if (uSpecularSlot != INVALID_SAMPLER_SLOT && !IsErrorResource( pMat->pSpecularRV11 ))
        {