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WWDC26 · 28 min · AI & Machine Learning / Graphics & Games

Speedrun your game port with agentic coding

Kickstart your game’s journey to Apple platforms with new agentic skills in Game Porting Toolkit 4 that can dramatically accelerate the process of porting your game. Explore how to work alongside your AI coding assistant to adopt Metal 4, integrate MetalFX, and tune your game for Apple hardware. Find out how agents can autonomously troubleshoot GPU rendering issues using Metal debugging tools, empowering you to focus on what matters most.

Watch at developer.apple.com ↗

Transcript all transcripts

Chapters

  • 0:00 — Introduction
  • 1:06 — Porting assistant workflow
  • 6:25 — Windowing and frame pacing
  • 8:28 — Scene rendering with Metal 4
  • 15:16 — Debugging with GPU command-line tools
  • 19:09 — Game controllers and MetalFX
  • 25:11 — Next steps

Code shown on screen · 5 snippets

Install Game Porting Toolkit skills bash · at 3:31 ↗ 
/plugin marketplace add apple/game-porting-toolkit
/plugin install game-porting-skills@game-porting-toolkit
Register resources for residency cpp · at 10:24 ↗ 
// With skill
residencySet->addAllocation(texture);
residencySet->commit();
// ...
argumentTable->setAddress(texture->gpuAddress(), bindPoint);

// Without skill
argumentTable->setAddress(texture->gpuAddress(), bindPoint);
Query argument buffer offsets cpp · at 11:25 ↗ 
// With skill
IRRootSignatureGetResourceLocations(m_MtlCurIRRootSig, locations);
size_t offset = locations[i].topLevelOffset;

// Without skill
size_t offset = paramIndex * descriptorSize;
Map D3D12 states to Metal 4 stages cpp · at 12:34 ↗ 
// With skill
m_MtlPendingProducerStages |= MtlProducerStageFromD3D12(OldState);
m_MtlPendingConsumerStages |= MtlConsumerStageFromD3D12(NewState);
// ...
m_ComputeEncoder->barrierAfterStages(
    m_MtlPendingProducerStages,
    m_MtlPendingConsumerStages,
    MTL4::VisibilityOptionDevice);

// Without skill
m_ComputeEncoder->barrierAfterStages(
    MTL::StageDispatch,
    MTL::StageAll,
    MTL4::VisibilityOptionDevice);
Query shader reflection parameter count cpp · at 14:24 ↗ 
// With skill
IRShaderReflection* refl = IRShaderReflectionCreate();
IRObjectGetReflection(compiledObj, IRShaderStageCompute, refl);
// ...
s_RootSignature.Reset(4, 2); // Reflection reveals: 4 params

// Without skill
s_RootSignature.Reset(5, 2);

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