---
name: "SDL_GPUIndirectDrawCommand"
section: "3type"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_GPUIndirectDrawCommand"
---

# SDL\_GPUIndirectDrawCommand(3type)

A structure specifying the parameters of an indirect draw command.

## NAME

SDL\_GPUIndirectDrawCommand - A structure specifying the parameters of an indirect draw command.

## HEADER FILE

Defined in SDL3/SDL\_gpu.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**typedef struct SDL\_GPUIndirectDrawCommand** **{**     **Uint32 num\_vertices;   /\*\*\< The number of vertices to draw. \*/**     **Uint32 num\_instances;  /\*\*\< The number of instances to draw. \*/**     **Uint32 first\_vertex;   /\*\*\< The index of the first vertex to draw. \*/**     **Uint32 first\_instance; /\*\*\< The ID of the first instance to draw. \*/** **} SDL\_GPUIndirectDrawCommand;**

## DESCRIPTION

Note that the **first\_vertex** and **first\_instance** parameters are NOT compatible with built-in vertex/instance ID variables in shaders (for example, SV\_VertexID); GPU APIs and shader languages do not define these built-in variables consistently, so if your shader depends on them, the only way to keep behavior consistent and portable is to always pass 0 for the correlating parameter in the draw calls.

## AVAILABILITY

This struct is available since SDL 3.2.0.

## SEE ALSO

**•**(3), [**SDL\_DrawGPUPrimitivesIndirect**(3)](/SDL_DrawGPUPrimitivesIndirect/3.md)