SDL_GPUIndirectDrawCommand

A structure specifying the parameters of an indirect draw command.

Header File

Defined in <SDL3/SDL_gpu.h>

Syntax

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;

Remarks

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.

Version

This struct is available since SDL 3.2.0.

See Also

• SDL_DrawGPUPrimitivesIndirect

CategoryAPI, CategoryAPIStruct, CategoryGPU