sdlBeginGpuRenderPass function gpu

Pointer<SdlGpuRenderPass> sdlBeginGpuRenderPass(Pointer<SdlGpuCommandBuffer> commandBuffer, Pointer<SdlGpuColorTargetInfo> colorTargetInfos, int numColorTargets, Pointer<SdlGpuDepthStencilTargetInfo> depthStencilTargetInfo,)

Begins a render pass on a command buffer.

A render pass consists of a set of texture subresources (or depth slices in the 3D texture case) which will be rendered to during the render pass, along with corresponding clear values and load/store operations. All operations related to graphics pipelines must take place inside of a render pass. A default viewport and scissor state are automatically set when this is called. You cannot begin another render pass, or begin a compute pass or copy pass until you have ended the render pass.

Using SDL_GPU_LOADOP_LOAD before any contents have been written to the texture subresource will result in undefined behavior. SDL_GPU_LOADOP_CLEAR will set the contents of the texture subresource to a single value before any rendering is performed. It's fine to do an empty render pass using SDL_GPU_STOREOP_STORE to clear a texture, but in general it's better to think of clearing not as an independent operation but as something that's done as the beginning of a render pass.

\param command_buffer a command buffer. \param color_target_infos an array of texture subresources with corresponding clear values and load/store ops. \param num_color_targets the number of color targets in the color_target_infos array. \param depth_stencil_target_info a texture subresource with corresponding clear value and load/store ops, may be NULL. \returns a render pass handle.

\since This function is available since SDL 3.2.0.

\sa SDL_EndGPURenderPass

extern SDL_DECLSPEC SDL_GPURenderPass * SDLCALL SDL_BeginGPURenderPass( SDL_GPUCommandBuffer *command_buffer, const SDL_GPUColorTargetInfo *color_target_infos, Uint32 num_color_targets, const SDL_GPUDepthStencilTargetInfo *depth_stencil_target_info)

Implementation

Pointer<SdlGpuRenderPass> sdlBeginGpuRenderPass(
  Pointer<SdlGpuCommandBuffer> commandBuffer,
  Pointer<SdlGpuColorTargetInfo> colorTargetInfos,
  int numColorTargets,
  Pointer<SdlGpuDepthStencilTargetInfo> depthStencilTargetInfo,
) {
  final sdlBeginGpuRenderPassLookupFunction = _libSdl
      .lookupFunction<
        Pointer<SdlGpuRenderPass> Function(
          Pointer<SdlGpuCommandBuffer> commandBuffer,
          Pointer<SdlGpuColorTargetInfo> colorTargetInfos,
          Uint32 numColorTargets,
          Pointer<SdlGpuDepthStencilTargetInfo> depthStencilTargetInfo,
        ),
        Pointer<SdlGpuRenderPass> Function(
          Pointer<SdlGpuCommandBuffer> commandBuffer,
          Pointer<SdlGpuColorTargetInfo> colorTargetInfos,
          int numColorTargets,
          Pointer<SdlGpuDepthStencilTargetInfo> depthStencilTargetInfo,
        )
      >('SDL_BeginGPURenderPass');
  return sdlBeginGpuRenderPassLookupFunction(
    commandBuffer,
    colorTargetInfos,
    numColorTargets,
    depthStencilTargetInfo,
  );
}