public void SetupBuild(int deviceIndex, uint triangleCnt, GpuBuffer vertices, ulong vertices_off, GpuBuffer indices, ulong indices_off, bool shortIndices)
{
devID = deviceIndex;
TrianglePrimitive = new RRTriangleMeshPrimitive()
{
index_type = shortIndices ? RRIndexType.RrIndexTypeUint16 : RRIndexType.RrIndexTypeUint32,
triangle_count = triangleCnt,
triangle_indices = indices.GetRayDevicePointer(indices_off),
vertex_count = VertexCount,
vertex_stride = VertexSize,
vertices = vertices.GetRayDevicePointer(vertices_off)
};
TrianglePrimitive_ptr = TrianglePrimitive.Pointer();
GeometryBuildInput = new RRGeometryBuildInput()
{
primitive_type = RRPrimitiveType.RrPrimitiveTypeTriangleMesh,
primitive_count = 1,
primitives = TrianglePrimitive_ptr,
};
GeometryBuildInput_ptr = GeometryBuildInput.Pointer();
RRBuildOptions opts = new RRBuildOptions()
{
build_flags = 0,
backend_specific_info = IntPtr.Zero,
};
var opts_ptr = opts.Pointer();
//Allocate the necessary memory
ManagedPtr <RRMemoryRequirements> geomMemReqs = new ManagedPtr <RRMemoryRequirements>();
if (rrGetGeometryBuildMemoryRequirements(GraphicsDevice.DeviceInformation[deviceIndex].RaysContext, GeometryBuildInput_ptr, opts_ptr, geomMemReqs) != RRError.RrSuccess)
{
throw new Exception("Failed to determine geometry memory requirements.");
}
ScratchBuffer = new GpuBuffer(Name + "_scratch")
{
MemoryUsage = MemoryUsage.GpuOnly,
Size = geomMemReqs.Value.temporary_build_buffer_size,
Usage = BufferUsage.Storage | BufferUsage.TransferDst
};
ScratchBuffer.Build(deviceIndex);
scratchBufferPtr = ScratchBuffer.GetRayDevicePointer(0);
BuiltGeometryBuffer = new GpuBuffer(Name + "_geom")
{
MemoryUsage = MemoryUsage.GpuOnly,
Size = geomMemReqs.Value.result_buffer_size,
Usage = BufferUsage.Storage | BufferUsage.TransferDst
};
BuiltGeometryBuffer.Build(deviceIndex);
geomBufferPtr = BuiltGeometryBuffer.GetRayDevicePointer(0);
}
public void BuildGeometry(RayGeometry geom)
{
if (locked)
{
if (!IsRadRayStream)
{
throw new Exception("Not a raytracing enabled command buffer.");
}
var geom_build_input = geom.GeometryBuildInput_ptr;
var build_options = new RRBuildOptions()
{
build_flags = 0,
};
var build_options_ptr = build_options.Pointer();
rrCmdBuildGeometry(GraphicsDevice.DeviceInformation[devID].RaysContext, RRBuildOperation.RrBuildOperationBuild, geom_build_input, build_options_ptr, geom.scratchBufferPtr, geom.geomBufferPtr, radRayStream);
IsEmpty = false;
}
else
{
throw new Exception("Command buffer not built.");
}
}