Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_DrawGPUIndexedPrimitives - Draws data using bound graphics state with an index buffer and instancing
enabled.
SYNOPSIS
#include <SDL3/SDL_gpu.h>
void SDL_DrawGPUIndexedPrimitives(
SDL_GPURenderPass *render_pass,
Uint32 num_indices,
Uint32 num_instances,
Uint32 first_index,
Sint32 vertex_offset,
Uint32 first_instance);
DESCRIPTION
You must not call this function before binding a graphics pipeline.
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.
FUNCTION PARAMETERS
render_pass
a render pass handle.
num_indices
the number of indices to draw per instance.
num_instances
the number of instances to draw.
first_index
the starting index within the index buffer.
vertex_offset
value added to vertex index before indexing into the vertex buffer.
first_instance
the ID of the first instance to draw.
AVAILABILITY
This function is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_DrawGPUIndexedPrimitives(3)