raytracing doesn't support structure of data

[bryan05]

because my engine is still very old, so the data in my shader is like this:

struct VSInput
{
	float4 position : SV_POSITION;
	float4 color : COLOR;
};

I want to bind buffer of this structure to raytracing shader. but the following code in Falcor in my view shows that Falcor only support array of data.

    bool RtSceneRenderer::setPerMeshInstanceData(const CurrentWorkingData& currentData, const Scene::ModelInstance* pModelInstance, const Model::MeshInstance* pMeshInstance, uint32_t drawInstanceID)
    {
...........

        setVertexBuffer(mMeshBufferLocations.lightmapUVs, VERTEX_LIGHTMAP_UV_LOC, pVao, pVars);
        setVertexBuffer(mMeshBufferLocations.texC, VERTEX_TEXCOORD_LOC, pVao, pVars);
        setVertexBuffer(mMeshBufferLocations.normal, VERTEX_NORMAL_LOC, pVao, pVars);
        setVertexBuffer(mMeshBufferLocations.position, VERTEX_POSITION_LOC, pVao, pVars);
        setVertexBuffer(mMeshBufferLocations.bitangent, VERTEX_BITANGENT_LOC, pVao, pVars);

How can I bind structure of data into raytracing shader?

[nbentyNV]

The representation in the shader is unrelated to how the buffers are stored in memory. Are you using Falcor's SceneImporter to load the vertex buffers?

[bryan05]

    static bool setVertexBuffer(ParameterBlockReflection::BindLocation bindLocation, uint32_t vertexLoc, const Vao* pVao, GraphicsVars* pVars)
    {
.......
            if (elemDesc.elementIndex == Vao::ElementDesc::kInvalidIndex)
            {
                pVars->getDefaultBlock()->setSrv(bindLocation, 0, nullptr);
            }
            else
            {
                assert(elemDesc.elementIndex == 0);

after I remove the assert, it worked. In the structure we have many elements, so elementIndex will be greater than zero.