The DrawModelInstancedIndirect method is a static member of the Sandbox.Graphics class. It is used to render multiple instances of a model using indirect drawing commands. This method leverages GPU buffers to manage instance data, allowing for efficient rendering of large numbers of instances.
To use DrawModelInstancedIndirect, you need to provide the following parameters:
model: The Sandbox.Model object representing the 3D model to be rendered.buffer: A Sandbox.GpuBuffer that contains the indirect draw commands. This buffer should be properly set up with the necessary data for indirect drawing.bufferOffset: An int specifying the offset in the buffer where the draw commands begin.attributes: A Sandbox.RenderAttributes object that contains rendering attributes such as material properties and shader parameters.This method is particularly useful for scenarios where you need to render a large number of instances of a model with varying transformations or other attributes, as it minimizes CPU-GPU communication by offloading the draw call setup to the GPU.
// Example usage of DrawModelInstancedIndirect // Assume model, buffer, and attributes are already defined and initialized Sandbox.Model model = ...; Sandbox.GpuBuffer buffer = ...; int bufferOffset = 0; Sandbox.RenderAttributes attributes = new Sandbox.RenderAttributes(); // Draw the model instances using indirect drawing Sandbox.Graphics.DrawModelInstancedIndirect(model, buffer, bufferOffset, attributes);