The DrawModelInstancedIndirect method is part of the CommandList class within the Sandbox.Rendering namespace. This method is used to render multiple instances of a model using indirect drawing. It leverages a GPU buffer to determine the number of instances and their parameters, allowing for efficient rendering of large numbers of objects.
To use the DrawModelInstancedIndirect method, you need to provide the following parameters:
model: The Model object that you want to render.buffer: A GpuBuffer that contains the indirect draw arguments. This buffer should be structured to match the expected format for indirect drawing.bufferOffset: An int specifying the offset within the buffer where the draw arguments begin.attributes: A RenderAttributes object that contains additional rendering attributes, such as material properties or shader parameters.Ensure that the GpuBuffer is properly initialized and contains valid data before calling this method.
// Example usage of DrawModelInstancedIndirect
var commandList = new CommandList();
var model = new Model("path/to/model");
var gpuBuffer = new GpuBuffer();
int bufferOffset = 0;
var renderAttributes = new RenderAttributes();
// Assuming gpuBuffer is already filled with indirect draw arguments
commandList.DrawModelInstancedIndirect(model, gpuBuffer, bufferOffset, renderAttributes);