WindowSwitcher: blur background #2330
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vapi/mutter-cogl-14.vapi
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| @@ -475,7 +475,7 @@ namespace Cogl { | |||
| #endif | |||
| public void set_uniform_1f (int uniform_location, float value); | |||
| public void set_uniform_1i (int uniform_location, int value); | |||
| public void set_uniform_float (int uniform_location, int n_components, int count, float value); | |||
| public void set_uniform_float (int uniform_location, int n_components, int count, float *value); | |||
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Is there a reason this is a pointer? According to the vapi docs if possible you should use the vala provided syntax to make the semantics clearer: https://docs.vala.dev/developer-guides/bindings/writing-a-vapi-manually/07-00-binding-a-c-function-s-parameter-and-return-types/07-07-pointers.html
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It's a pointer to the start of array of float values in C header. I don't know if there's other way to pass it
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Well I guess you could pass it as an array? IIUC the array length would be n_components * count? In that case you'd probably have to do array_length = false in the vapi. On the other hand the deprecated Cogl.Program has a method with the same name and annotates the count as array length.
But i don't know enough about shaders and that stuff to say which it is 😅
Also the vapi seems to be generated by vapigen (at least that's what it says in the header) so ig we should probably put the change in the metadata file? https://docs.vala.dev/developer-guides/bindings/generating-a-vapi-with-gobject-introspection.html#fixing-vapi-generation-with-metadata
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I put it in the vapi file for now. I always assumed our vapi files were written by hand since the meson script in the vapi folder never worked for me. I guess we should ask @tintou about where should this change be
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New clean branch that should be easier to review
Window switcher is used as an example of how this effect can be used because Danielle showed some interest in blurring it: elementary/granite#747 (comment)
Can be rebase merged