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)