app_server: Implement more composition modes
* Use agg::comp_op classes to blend pixels. * Subpixel path not implemented. * Needed by WebKit. * Implements #10274. Change-Id: I07b0002196fd0a05fc100bd9f6d703c33cadc85b Reviewed-on: https://review.haiku-os.org/c/haiku/+/2932 Reviewed-by: X512 <[email protected]> Reviewed-by: Adrien Destugues <[email protected]>
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Kacper Kasper
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waddlesplash
waddlesplash
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@@ -111,3 +111,204 @@
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\since BeOS R3
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_SOURCE_OVER
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Draws source over destination preserving transparency. Same as
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\c B_ALPHA_COMPOSITE.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE_OVER.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_SOURCE_IN
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Draws source only where destination is not transparent.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE_IN.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_SOURCE_OUT
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Draws source only where destination is transparent.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE_OUT.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_SOURCE_ATOP
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Draws source only where destination is not transparent. Colors from both
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are used in the result.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE_ATOP.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_DESTINATION_OVER
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Draws source where destination is transparent, making it appear as if it
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is drawn behind.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION_OVER.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_DESTINATION_IN
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Blends source alpha channel with destination.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION_IN.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_DESTINATION_OUT
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Blends inverse of source alpha channel with destination. Result appears as
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if source was cut out of destination.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION_OUT.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_DESTINATION_ATOP
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Draws source only where it is not transparent. Destination is blended on
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top of it. Colors from both are used in the result.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION_ATOP.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_XOR
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Result is transparent only where both source and destination are transparent
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or opaque.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_XOR.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_CLEAR
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Erases destination to full transparency, regardless of source alpha value.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_CLEAR.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_DIFFERENCE
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Subtracts both inputs in a way that always yields positive result.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_DIFFERENCE.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_LIGHTEN
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Retains lighter pixels of both inputs.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_LIGHTEN.png "Result"
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\since Haiku R1
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*/
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/*!
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\var alpha_function B_ALPHA_COMPOSITE_DARKEN
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Retains darker pixels of both inputs.
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\image{inline} html B_ALPHA_COMPOSITE_SOURCE.png "Source"
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->
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\image{inline} html B_ALPHA_COMPOSITE_DESTINATION.png "Destination"
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=
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\image{inline} html B_ALPHA_COMPOSITE_DARKEN.png "Result"
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\since Haiku R1
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*/
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