47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
package d2common
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type CompositeMode int
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const (
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// Regular alpha blending
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// c_out = c_src + c_dst × (1 - α_src)
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CompositeModeSourceOver CompositeMode = CompositeMode(1)
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// c_out = 0
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CompositeModeClear CompositeMode = CompositeMode(2)
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// c_out = c_src
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CompositeModeCopy CompositeMode = CompositeMode(3)
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// c_out = c_dst
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CompositeModeDestination CompositeMode = CompositeMode(4)
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// c_out = c_src × (1 - α_dst) + c_dst
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CompositeModeDestinationOver CompositeMode = CompositeMode(5)
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// c_out = c_src × α_dst
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CompositeModeSourceIn CompositeMode = CompositeMode(6)
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// c_out = c_dst × α_src
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CompositeModeDestinationIn CompositeMode = CompositeMode(7)
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// c_out = c_src × (1 - α_dst)
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CompositeModeSourceOut CompositeMode = CompositeMode(8)
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// c_out = c_dst × (1 - α_src)
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CompositeModeDestinationOut CompositeMode = CompositeMode(9)
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// c_out = c_src × α_dst + c_dst × (1 - α_src)
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CompositeModeSourceAtop CompositeMode = CompositeMode(10)
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// c_out = c_src × (1 - α_dst) + c_dst × α_src
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CompositeModeDestinationAtop CompositeMode = CompositeMode(11)
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// c_out = c_src × (1 - α_dst) + c_dst × (1 - α_src)
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CompositeModeXor CompositeMode = CompositeMode(12)
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// Sum of source and destination (a.k.a. 'plus' or 'additive')
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// c_out = c_src + c_dst
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CompositeModeLighter CompositeMode = CompositeMode(13)
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)
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