Function simplifySampling

gapis/api/vulkan/simplify_sampling.go:27–61

simplifySampling returns a transform that turns off anisotropic filtering and sets filtering modes to nearest neighbor

(ctx context.Context)

// simplifySampling returns a transform that turns off anisotropic filtering
// and sets filtering modes to nearest neighbor
func simplifySampling(ctx context.Context) transform.Transformer {
	ctx = log.Enter(ctx, "Simplify sampling")
	return transform.Transform("Simplify sampling", func(ctx context.Context,
		id api.CmdID, cmd api.Cmd, out transform.Writer) {

		s := out.State()
		cb := CommandBuilder{Thread: cmd.Thread(), Arena: s.Arena}
		switch cmd := cmd.(type) {
		case *VkCreateSampler:
			cmd.Extras().Observations().ApplyReads(s.Memory.ApplicationPool())

			samplerCreateInfo := cmd.PCreateInfo().MustRead(ctx, cmd, s, nil)
			samplerCreateInfo.SetAnisotropyEnable(VkBool32(0))
			samplerCreateInfo.SetMinFilter(VkFilter_VK_FILTER_NEAREST)
			samplerCreateInfo.SetMagFilter(VkFilter_VK_FILTER_NEAREST)

			samplerCreateInfoData := s.AllocDataOrPanic(ctx, samplerCreateInfo)
			defer samplerCreateInfoData.Free()

			newCmd := cb.VkCreateSampler(cmd.Device(),
				samplerCreateInfoData.Ptr(),
				cmd.PAllocator(),
				cmd.PSampler(),
				VkResult_VK_SUCCESS,
			).AddRead(samplerCreateInfoData.Data())

			for _, w := range cmd.Extras().Observations().Writes {
				newCmd.AddWrite(w.Range, w.ID)
			}
			out.MutateAndWrite(ctx, id, newCmd)
		default:
			out.MutateAndWrite(ctx, id, cmd)
		}
	})
}