# SDL_SetGPUStencilReference Sets the current stencil reference value on a command buffer. ## Header File Defined in [<SDL3/SDL_gpu.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_gpu.h) ## Syntax ```c void SDL_SetGPUStencilReference( SDL_GPURenderPass *render_pass, Uint8 reference); ``` ## Function Parameters | | | | | ---------------------------------------- | --------------- | ----------------------------------- | | [SDL_GPURenderPass](SDL_GPURenderPass) * | **render_pass** | a render pass handle. | | Uint8 | **reference** | the stencil reference value to set. | ## Version This function is available since SDL 3.2.0. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryGPU](CategoryGPU)