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Shader Uniform Binding

ShaderAnimatedControl separates shader compilation from parameter binding:

  • the control loads the SKSL source from ShaderUri,
  • compiles it to an SKRuntimeEffect,
  • then raises Draw for each render pass.
  1. Exit early when ErrorText is set.
  2. Lazily allocate SKRuntimeEffectUniforms.
  3. Feed time, resolution, and any app-specific values into the uniform buffer.
  4. Create a shader from e.Effect.ToShader(...).
  5. Draw to e.Canvas using e.DestRect.

Size handling

When IsShaderFillCanvas is true, derive your iResolution or equivalent uniform values from e.DestRect.Width and e.DestRect.Height.

When IsShaderFillCanvas is false, use ShaderWidth and ShaderHeight as the logical shader size.

Resource cleanup

If your view stores SKRuntimeEffectUniforms or other disposable Skia objects, dispose them when the owning control or window detaches from the visual tree. The EffectsDemo sample does this in OnDetachedFromVisualTree(...).