Method setBuffer

kernels/common/scene_instance_array.cpp:88–123

  }

  void InstanceArray::setBuffer(RTCBufferType type, unsigned int slot, RTCFormat format, const Ref<Buffer>& buffer, size_t offset, size_t stride, unsigned int num)
  {
    /* verify that all accesses are 4 bytes aligned */
    if (((size_t(buffer->getHostPtr()) + offset) & 0x3) || (stride & 0x3))
      throw_RTCError(RTC_ERROR_INVALID_OPERATION, "data must be 4 bytes aligned");

    if (type == RTC_BUFFER_TYPE_TRANSFORM)
    {
      if ((format != RTC_FORMAT_FLOAT3X4_COLUMN_MAJOR)
       && (format != RTC_FORMAT_FLOAT4X4_COLUMN_MAJOR)
       && (format != RTC_FORMAT_FLOAT3X4_ROW_MAJOR)
       && (format != RTC_FORMAT_QUATERNION_DECOMPOSITION))
        throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid transform buffer format");

      if (slot >= l2w_buf.size())
        throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid transform buffer slot");

      if (format == RTC_FORMAT_QUATERNION_DECOMPOSITION)
        gsubtype = GTY_SUBTYPE_INSTANCE_QUATERNION;
      numPrimitives = num;
      l2w_buf[slot].set(buffer, offset, stride, num, format);
      l2w_buf[slot].checkPadding16();
    }
    else if (type == RTC_BUFFER_TYPE_INDEX)
    {
      if (format != RTC_FORMAT_UINT)
        throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid index buffer format. must be RTC_FORMAT_UINT.");

      if (slot != 0)
        throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid index buffer slot. must be 0.");

      object_ids.set(buffer, offset, stride, num, format);
    }
    else
      throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
  }

  void* InstanceArray::getBufferData(RTCBufferType type, unsigned int slot, BufferDataPointerType pointerType)
  {