public TriangleGeometry(Device device, V3f[] vertices, int[] triangleIndices, RTCBuildQuality quality)
: base(device, RTCGeometryType.Triangle, quality)
{
m_vertices = new EmbreeBuffer(device, vertices);
m_indices = new EmbreeBuffer(device, triangleIndices);
// triangle index buffer needs to be UINT3
EmbreeAPI.rtcSetGeometryBuffer(Handle, RTCBufferType.Index, 0, RTCFormat.UINT3, m_indices.Handle, 0, sizeof(int) * 3, (ulong)(triangleIndices.Length / 3));
// triangle vertex needs to be FLOAT3
EmbreeAPI.rtcSetGeometryBuffer(Handle, RTCBufferType.Vertex, 0, RTCFormat.FLOAT3, m_vertices.Handle, 0, sizeof(float) * 3, (ulong)vertices.Length);
Commit();
device.CheckError("Create TriangleGeometry");
}
/// <summary>
/// Create TriangleGeometry from buffers. Indices expected to be int32 and vertices to be V3f.
/// </summary>
public TriangleGeometry(Device device, EmbreeBuffer vertexBuffer, int vertexOffset, int vertexCount, EmbreeBuffer indexBuffer, int indexOffset, int triangleCount, RTCBuildQuality quality)
: base(device, RTCGeometryType.Triangle, quality)
{
EmbreeAPI.rtcRetainBuffer(vertexBuffer.Handle);
EmbreeAPI.rtcRetainBuffer(indexBuffer.Handle);
m_vertices = vertexBuffer;
m_indices = indexBuffer;
// triangle index buffer needs to be UINT3
EmbreeAPI.rtcSetGeometryBuffer(Handle, RTCBufferType.Index, 0, RTCFormat.UINT3, m_indices.Handle, (ulong)indexOffset * sizeof(int), sizeof(int) * 3, (ulong)triangleCount);
// triangle vertex needs to be FLOAT3
EmbreeAPI.rtcSetGeometryBuffer(Handle, RTCBufferType.Vertex, 0, RTCFormat.FLOAT3, m_vertices.Handle, (ulong)vertexOffset, sizeof(float) * 3, (ulong)vertexCount);
Commit();
device.CheckError("Create TriangleGeometry");
}