Indigo Goes Native: Laying the Foundations

[davesmith00000]

The purpose of this PR is to lay the foundations for Indigo to go cross platform with Scala Native. You won't be able to play an Indigo game using Scala Native at the end of this, but all the modules will compile against native platforms, ready for the real work to begin.

[Copilot]

Pull request overview

This PR lays groundwork for Scala Native support across the Indigo monorepo by introducing Native module variants/stubs and adjusting module wiring so Native targets compile.

Changes:

• Adds/extends native Mill modules across Indigo libraries (and updates the dependency diagram accordingly).
• Introduces initial Scala Native stubs/placeholders (e.g., platform/engine scaffolding and a placeholder launcher).
• Adds shader and matrix tests for additional platforms (Native/JVM/JS), while several existing shared tests are temporarily disabled.

Reviewed changes

Copilot reviewed 53 out of 60 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
ultraviolet/test/src-native/ultraviolet/acceptance/IndigoTests.scala	Adds a Native test suite placeholder for Ultraviolet/Indigo acceptance tests.
ultraviolet/package.mill	Adjusts Ultraviolet build imports for Native support (contains a duplicate import).
indigoengine-shared/package.mill	Enables publishing for the JVM shared module and adds publishing for Native.
indigo/test/src/indigo/scenes/SceneManagerTests.scala	Temporarily disables a shared SceneManager test suite (commented out).
indigo/test/src/indigo/scenes/SceneFinderTests.scala	Temporarily disables a shared SceneFinder test suite (commented out).
indigo/src/indigo/frameprocessors/GameFrameProcessor.scala	Removes an unused import to keep compilation clean.
indigo/src-native/indigo/PlaceholderGameLauncher.scala	Adds a Native placeholder launcher type.
indigo/package.mill	Rewires Indigo top-level module to provide a Native target.
indigo-shaders/test/src-native/indigo/shaders/ToUniformBlockTests.scala	Adds Native coverage for ToUniformBlock derivation.
indigo-shaders/test/src-native/indigo/shaders/StandardShadersTests.scala	Adds Native “smoke” tests to ensure standard shaders compile/emit code.
indigo-shaders/test/src-native/indigo/shaders/ShaderPrimitiveTests.scala	Adds Native tests for shader primitive packing behavior.
indigo-shaders/test/src-jvm/indigo/shaders/ToUniformBlockTests.scala	Adds JVM coverage for ToUniformBlock derivation.
indigo-shaders/test/src-jvm/indigo/shaders/StandardShadersTests.scala	Adds JVM “smoke” tests for standard shaders.
indigo-shaders/test/src-jvm/indigo/shaders/ShaderPrimitiveTests.scala	Adds JVM tests for shader primitive packing behavior.
indigo-shaders/test/src-js/indigo/shaders/ToUniformBlockTests.scala	Adds JS coverage for ToUniformBlock derivation.
indigo-shaders/test/src-js/indigo/shaders/StandardShadersTests.scala	Adds JS “smoke” tests for standard shaders.
indigo-shaders/test/src-js/indigo/shaders/ShaderPrimitiveTests.scala	Adds JS tests for shader primitive packing behavior.
indigo-shaders/src/indigo/shaders/library/BaseEntityShader.scala	Adjusts fragment template placeholder emission to compile cleanly under stricter warnings.
indigo-shaders/package.mill	Introduces Native module; current JVM module wiring appears incorrect (see comments).
indigo-scenegraph/package.mill	Introduces Native module wiring for scenegraph.
indigo-render/package.mill	Introduces Native module wiring for renderer.
indigo-render-pipeline/package.mill	Introduces Native module wiring for render pipeline.
indigo-platform/src-native/indigo/platform/gameengine/GameEngine.scala	Adds a Native GameEngine placeholder scaffold (mostly stubbed).
indigo-platform/src-native/indigo/platform/assets/AssetCollection.scala	Adds a Native AssetCollection placeholder implementation.
indigo-platform/src-native/indigo/platform/NativePlatform.scala	Renames the stub platform class for Native (comment still references JVM).
indigo-platform/src-js/indigo/platform/JsPlatform.scala	Cleans up redundant imports.
indigo-platform/package.mill	Introduces Native module wiring for platform module.
indigo-physics/package.mill	Introduces Native module wiring for physics module.
indigo-json-circe/package.mill	Introduces Native module wiring for JSON module.
indigo-extras/test/src/indigoextras/waypoints/WaypointPathTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/utils/BresenhamTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/ui/window/WindowManagerModelTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/ui/datatypes/UIContextTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/ui/components/datatypes/ContainerLikeFunctionsTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/ui/components/InputTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/ui/components/ComponentGroupTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/ui/Helper.scala	Temporarily disables shared test helper extensions (commented out).
indigo-extras/test/src/indigoextras/subsystems/FakeSubSystemFrameContext.scala	Temporarily disables shared test helper (commented out).
indigo-extras/test/src/indigoextras/subsystems/AutomataTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/performers/StageManagerTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/mesh/BowyerWatsonTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/jobs/WorkerTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/jobs/WorkScheduleTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/jobs/SampleJobs.scala	Temporarily disables shared test fixtures (commented out).
indigo-extras/test/src/indigoextras/jobs/JobMarketTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/effectmaterials/shaders/LegacyEffectsShadersTests.scala	Temporarily disables a shader output test.
indigo-extras/test/src/indigoextras/datatypes/UpdateListTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/datatypes/TimeVaryingValueTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/test/src/indigoextras/actors/ActorPoolTests.scala	Temporarily disables a shared test suite (commented out).
indigo-extras/package.mill	Introduces Native module wiring for indigo-extras.
indigo-core/test/src-native/indigo/core/datatypes/mutable/CheapMatrix4Tests.scala	Adds Native tests for CheapMatrix4.
indigo-core/src-native/indigo/core/datatypes/mutable/CheapMatrix4.scala	Adds Native implementation of CheapMatrix4.
indigo-core/package.mill	Adds Native module wiring and enables publishing for the JVM module.
diagrams/indigoengine.dot	Updates module dependency diagram for Native targets.
build.mill	Adds Scala Native build configuration details (incremental compilation, debug release mode, LTO config).

Comments suppressed due to low confidence (1)

indigo-platform/src-native/indigo/platform/NativePlatform.scala:11

• The doc comment still says "No-op JVM Platform implementation stub" but the class/file are now NativePlatform. Update the comment to refer to Scala Native to avoid confusion about which platform this stub targets.

[Copilot]

Pull request overview

Lays groundwork for building Indigo (and key dependencies) on Scala Native by adding Native Mill modules, introducing Native-side stubs/placeholders, and ensuring core shader/math functionality is exercised via tests.

Changes:

• Add/enable native platform modules (and publishing) across Indigo’s module graph.
• Introduce Scala Native stubs/placeholders for platform/runtime pieces and add Native test suites.
• Update shader generation code paths and dependency diagrams to reflect new targets.

Reviewed changes

Copilot reviewed 28 out of 35 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
ultraviolet/test/src-native/ultraviolet/acceptance/IndigoTests.scala	Adds Scala Native acceptance tests for Indigo example shaders.
tyrian/src-js/tyrian/ui/UIElement.scala	Removes large TODO comment block from UIElement.
indigoengine-shared/package.mill	Enables publishing for the JVM variant alongside JS/Native.
indigo/src/indigo/syntax.scala	Removes obsolete commented Scala.js toUVArray extension.
indigo/src/indigo/frameprocessors/GameFrameProcessor.scala	Removes unused import.
indigo/src-native/indigo/PlaceholderGameLauncher.scala	Adds Native placeholder launcher class.
indigo/package.mill	Adds native module and dependencies for Indigo top-level module.
indigo-shaders/test/src-native/indigo/shaders/ToUniformBlockTests.scala	Adds Native tests for ToUniformBlock derivation.
indigo-shaders/test/src-native/indigo/shaders/StandardShadersTests.scala	Adds Native tests to validate standard shader compilation outputs.
indigo-shaders/test/src-native/indigo/shaders/ShaderPrimitiveTests.scala	Adds Native tests for ShaderPrimitive packing behavior.
indigo-shaders/test/src-jvm/indigo/shaders/ToUniformBlockTests.scala	Adds JVM tests for ToUniformBlock derivation.
indigo-shaders/test/src-jvm/indigo/shaders/StandardShadersTests.scala	Adds JVM tests to validate standard shader compilation outputs.
indigo-shaders/test/src-jvm/indigo/shaders/ShaderPrimitiveTests.scala	Adds JVM tests for ShaderPrimitive packing behavior.
indigo-shaders/test/src-js/indigo/shaders/ToUniformBlockTests.scala	Adds Scala.js tests for ToUniformBlock derivation.
indigo-shaders/test/src-js/indigo/shaders/StandardShadersTests.scala	Adds Scala.js tests to validate standard shader compilation outputs.
indigo-shaders/test/src-js/indigo/shaders/ShaderPrimitiveTests.scala	Adds Scala.js tests for ShaderPrimitive packing behavior.
indigo-shaders/src/indigo/shaders/library/BaseEntityShader.scala	Adjusts fragment template placeholder generation and warning suppression.
indigo-shaders/package.mill	Adds Native module and configures published variants for indigo-shaders.
indigo-scenegraph/package.mill	Switches scenegraph’s non-JS target to Native and enables publishing.
indigo-render/package.mill	Switches render’s non-JS target to Native and trims JS deps.
indigo-render-pipeline/package.mill	Switches render-pipeline’s non-JS target to Native.
indigo-platform/src-native/indigo/platform/gameengine/GameEngine.scala	Adds Native placeholder GameEngine scaffolding (mostly commented).
indigo-platform/src-native/indigo/platform/assets/AssetCollection.scala	Adds Native placeholder asset collection types.
indigo-platform/src-native/indigo/platform/NativePlatform.scala	Renames platform stub to NativePlatform for Native target.
indigo-platform/src-js/indigo/platform/JsPlatform.scala	Removes redundant imports after refactor.
indigo-platform/package.mill	Switches platform’s non-JS target to Native and adjusts JS deps.
indigo-physics/package.mill	Switches physics’s non-JS target to Native and enables publishing.
indigo-json-circe/package.mill	Switches json-circe’s non-JS target to Native and updates deps.
indigo-extras/package.mill	Switches extras’s non-JS target to Native and updates deps.
indigo-core/test/src-native/indigo/core/datatypes/mutable/CheapMatrix4Tests.scala	Adds Native tests for CheapMatrix4 behavior.
indigo-core/src-native/indigo/core/datatypes/mutable/CheapMatrix4.scala	Adds Native CheapMatrix4 implementation (mutable/opaque Array[Float]).
indigo-core/package.mill	Enables publishing for JVM and adds new Native module.
diagrams/indigoengine.dot	Updates module dependency diagram for JS/JVM/Native layout.
build.mill	Adds Scala Native API imports and config tweaks for Native compilation.

Comments suppressed due to low confidence (1)

indigo-platform/src-native/indigo/platform/NativePlatform.scala:10

• The Scaladoc still refers to this as a JVM platform stub, but the class/file are for Scala Native (NativePlatform in src-native). Please update the comment to avoid confusion about the target/runtime.