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# ES1 Status
ES1 is implemented entirely in the front-end using features from GLES3.0. Therefore, every backend
with GLES3 support (i.e. everything other than D3D9) supports GLES1 as well.
ANGLE passes GLES1's `MustPass`, however there are known missing features.
| Features | Status | Backends |
|:-------------------------------------|:---------------------------------------------|:------------|
| Logic Op | Implemented through extensions [1](#notes-1) | Vulkan, GL |
| Palette compressed textures | Emulated with uncompressed format | Vulkan |
| [Smooth lines][lines] | Unimplemented | None |
| [Two-sided lighting][lighting] | Unimplemented | None |
| [Matrix palette][matrix] | Unimplemented (optional) | None |
[lines]: http://anglebug.com/42266418
[lighting]: http://anglebug.com/42266170
[matrix]: http://anglebug.com/42266419
### Notes [1]
* Logic op is implemented through the `ANGLE_logic_op` or `EXT_framebuffer_fetch` extensions.
* Currently, these are supported on the Vulkan and GL backends only.
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