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feat(ppa): add blend with color key example

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morris
2026-06-22 21:48:05 +08:00
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docs/en/api-reference/peripherals/ppa.rst
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@@ -176,6 +176,7 @@ Application Examples
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* :example:`peripherals/ppa/ppa_transform` - PPA transform image processing example. The embedded RGB565 image is transformed by SRM, highlighted with blend, framed with fill, and emitted as base64 for host-side PPM reconstruction and golden-image comparison.
* :example:`peripherals/ppa/ppa_color_key` - PPA blend color-keying example. The example generates a centered RGB888 glow foreground in software, then demonstrates two blend effects on the embedded RGB565 image: replacing the keyed red `ESP32` text with the glow, and preserving the keyed text while blending the glow into the non-key area. Both results are emitted as base64 for host-side PPM reconstruction and golden-image comparison.
API Reference
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