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internal/graphicscommand: better debug info for blending

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This commit is contained in:
Hajime Hoshi 2024-10-15 18:15:16 +09:00
parent 39c21bf4a6
commit 7f87ecaddc
3 changed files with 202 additions and 128 deletions
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172
blend.go
View File

@ -179,6 +179,33 @@ func (b BlendFactor) internalBlendFactor(source bool) graphicsdriver.BlendFactor
}
}
func internalBlendFactorToBlendFactor(blendFactor graphicsdriver.BlendFactor) BlendFactor {
switch blendFactor {
case graphicsdriver.BlendFactorZero:
return BlendFactorZero
case graphicsdriver.BlendFactorOne:
return BlendFactorOne
case graphicsdriver.BlendFactorSourceColor:
return BlendFactorSourceColor
case graphicsdriver.BlendFactorOneMinusSourceColor:
return BlendFactorOneMinusSourceColor
case graphicsdriver.BlendFactorSourceAlpha:
return BlendFactorSourceAlpha
case graphicsdriver.BlendFactorOneMinusSourceAlpha:
return BlendFactorOneMinusSourceAlpha
case graphicsdriver.BlendFactorDestinationColor:
return BlendFactorDestinationColor
case graphicsdriver.BlendFactorOneMinusDestinationColor:
return BlendFactorOneMinusDestinationColor
case graphicsdriver.BlendFactorDestinationAlpha:
return BlendFactorDestinationAlpha
case graphicsdriver.BlendFactorOneMinusDestinationAlpha:
return BlendFactorOneMinusDestinationAlpha
default:
panic(fmt.Sprintf("ebiten: invalid blend factor: %d", blendFactor))
}
}
// BlendOperation is an operation for source and destination color values.
type BlendOperation byte
@ -233,6 +260,34 @@ func (b BlendOperation) internalBlendOperation() graphicsdriver.BlendOperation {
}
}
func internalBlendOperationToBlendOperation(blendOperation graphicsdriver.BlendOperation) BlendOperation {
switch blendOperation {
case graphicsdriver.BlendOperationAdd:
return BlendOperationAdd
case graphicsdriver.BlendOperationSubtract:
return BlendOperationSubtract
case graphicsdriver.BlendOperationReverseSubtract:
return BlendOperationReverseSubtract
case graphicsdriver.BlendOperationMin:
return BlendOperationMin
case graphicsdriver.BlendOperationMax:
return BlendOperationMax
default:
panic(fmt.Sprintf("ebiten: invalid blend operation: %d", blendOperation))
}
}
func internalBlendToBlend(blend graphicsdriver.Blend) Blend {
return Blend{
BlendFactorSourceRGB: internalBlendFactorToBlendFactor(blend.BlendFactorSourceRGB),
BlendFactorSourceAlpha: internalBlendFactorToBlendFactor(blend.BlendFactorSourceAlpha),
BlendFactorDestinationRGB: internalBlendFactorToBlendFactor(blend.BlendFactorDestinationRGB),
BlendFactorDestinationAlpha: internalBlendFactorToBlendFactor(blend.BlendFactorDestinationAlpha),
BlendOperationRGB: internalBlendOperationToBlendOperation(blend.BlendOperationRGB),
BlendOperationAlpha: internalBlendOperationToBlendOperation(blend.BlendOperationAlpha),
}
}
// This name convention follows CSS compositing: https://drafts.fxtf.org/compositing-2/.
//
// In the comments,
@ -242,169 +297,78 @@ var (
//
// c_out = c_src + c_dst × (1 - α_src)
// α_out = α_src + α_dst × (1 - α_src)
BlendSourceOver = Blend{
BlendFactorSourceRGB: BlendFactorOne,
BlendFactorSourceAlpha: BlendFactorOne,
BlendFactorDestinationRGB: BlendFactorOneMinusSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorOneMinusSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendSourceOver = internalBlendToBlend(graphicsdriver.BlendSourceOver)
// BlendClear is a preset Blend for Porter Duff's 'clear'.
//
// c_out = 0
// α_out = 0
BlendClear = Blend{
BlendFactorSourceRGB: BlendFactorZero,
BlendFactorSourceAlpha: BlendFactorZero,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendClear = internalBlendToBlend(graphicsdriver.BlendClear)
// BlendCopy is a preset Blend for Porter Duff's 'copy'.
//
// c_out = c_src
// α_out = α_src
BlendCopy = Blend{
BlendFactorSourceRGB: BlendFactorOne,
BlendFactorSourceAlpha: BlendFactorOne,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendCopy = internalBlendToBlend(graphicsdriver.BlendCopy)
// BlendDestination is a preset Blend for Porter Duff's 'destination'.
//
// c_out = c_dst
// α_out = α_dst
BlendDestination = Blend{
BlendFactorSourceRGB: BlendFactorZero,
BlendFactorSourceAlpha: BlendFactorZero,
BlendFactorDestinationRGB: BlendFactorOne,
BlendFactorDestinationAlpha: BlendFactorOne,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestination = internalBlendToBlend(graphicsdriver.BlendDestination)
// BlendDestinationOver is a preset Blend for Porter Duff's 'destination-over'.
//
// c_out = c_src × (1 - α_dst) + c_dst
// α_out = α_src × (1 - α_dst) + α_dst
BlendDestinationOver = Blend{
BlendFactorSourceRGB: BlendFactorOneMinusDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorOneMinusDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorOne,
BlendFactorDestinationAlpha: BlendFactorOne,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestinationOver = internalBlendToBlend(graphicsdriver.BlendDestinationOver)
// BlendSourceIn is a preset Blend for Porter Duff's 'source-in'.
//
// c_out = c_src × α_dst
// α_out = α_src × α_dst
BlendSourceIn = Blend{
BlendFactorSourceRGB: BlendFactorDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendSourceIn = internalBlendToBlend(graphicsdriver.BlendSourceIn)
// BlendDestinationIn is a preset Blend for Porter Duff's 'destination-in'.
//
// c_out = c_dst × α_src
// α_out = α_dst × α_src
BlendDestinationIn = Blend{
BlendFactorSourceRGB: BlendFactorZero,
BlendFactorSourceAlpha: BlendFactorZero,
BlendFactorDestinationRGB: BlendFactorSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestinationIn = internalBlendToBlend(graphicsdriver.BlendDestinationIn)
// BlendSourceOut is a preset Blend for Porter Duff's 'source-out'.
//
// c_out = c_src × (1 - α_dst)
// α_out = α_src × (1 - α_dst)
BlendSourceOut = Blend{
BlendFactorSourceRGB: BlendFactorOneMinusDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorOneMinusDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendSourceOut = internalBlendToBlend(graphicsdriver.BlendSourceOut)
// BlendDestinationOut is a preset Blend for Porter Duff's 'destination-out'.
//
// c_out = c_dst × (1 - α_src)
// α_out = α_dst × (1 - α_src)
BlendDestinationOut = Blend{
BlendFactorSourceRGB: BlendFactorZero,
BlendFactorSourceAlpha: BlendFactorZero,
BlendFactorDestinationRGB: BlendFactorOneMinusSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorOneMinusSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestinationOut = internalBlendToBlend(graphicsdriver.BlendDestinationOut)
// BlendSourceAtop is a preset Blend for Porter Duff's 'source-atop'.
//
// c_out = c_src × α_dst + c_dst × (1 - α_src)
// α_out = α_src × α_dst + α_dst × (1 - α_src)
BlendSourceAtop = Blend{
BlendFactorSourceRGB: BlendFactorDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorOneMinusSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorOneMinusSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendSourceAtop = internalBlendToBlend(graphicsdriver.BlendSourceAtop)
// BlendDestinationAtop is a preset Blend for Porter Duff's 'destination-atop'.
//
// c_out = c_src × (1 - α_dst) + c_dst × α_src
// α_out = α_src × (1 - α_dst) + α_dst × α_src
BlendDestinationAtop = Blend{
BlendFactorSourceRGB: BlendFactorOneMinusDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorOneMinusDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestinationAtop = internalBlendToBlend(graphicsdriver.BlendDestinationAtop)
// BlendXor is a preset Blend for Porter Duff's 'xor'.
//
// c_out = c_src × (1 - α_dst) + c_dst × (1 - α_src)
// α_out = α_src × (1 - α_dst) + α_dst × (1 - α_src)
BlendXor = Blend{
BlendFactorSourceRGB: BlendFactorOneMinusDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorOneMinusDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorOneMinusSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorOneMinusSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendXor = internalBlendToBlend(graphicsdriver.BlendXor)
// BlendLighter is a preset Blend for Porter Duff's 'lighter'.
// This is sum of source and destination (a.k.a. 'plus' or 'additive')
//
// c_out = c_src + c_dst
// α_out = α_src + α_dst
BlendLighter = Blend{
BlendFactorSourceRGB: BlendFactorOne,
BlendFactorSourceAlpha: BlendFactorOne,
BlendFactorDestinationRGB: BlendFactorOne,
BlendFactorDestinationAlpha: BlendFactorOne,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendLighter = internalBlendToBlend(graphicsdriver.BlendLighter)
)

18
internal/graphicscommand/command.go
View File

@ -81,6 +81,24 @@ func (c *drawTrianglesCommand) String() string {
blend = "(clear)"
case graphicsdriver.BlendCopy:
blend = "(copy)"
case graphicsdriver.BlendDestination:
blend = "(destination)"
case graphicsdriver.BlendSourceIn:
blend = "(source-in)"
case graphicsdriver.BlendDestinationIn:
blend = "(destination-in)"
case graphicsdriver.BlendSourceOut:
blend = "(source-out)"
case graphicsdriver.BlendDestinationOut:
blend = "(destination-out)"
case graphicsdriver.BlendSourceAtop:
blend = "(source-atop)"
case graphicsdriver.BlendDestinationAtop:
blend = "(destination-atop)"
case graphicsdriver.BlendXor:
blend = "(xor)"
case graphicsdriver.BlendLighter:
blend = "(lighter)"
default:
blend = fmt.Sprintf("{src-rgb: %d, src-alpha: %d, dst-rgb: %d, dst-alpha: %d, op-rgb: %d, op-alpha: %d}",
c.blend.BlendFactorSourceRGB,

140
internal/graphicsdriver/blend.go
View File

@ -51,29 +51,121 @@ const (
BlendOperationMax
)
var BlendSourceOver = Blend{
BlendFactorSourceRGB: BlendFactorOne,
BlendFactorSourceAlpha: BlendFactorOne,
BlendFactorDestinationRGB: BlendFactorOneMinusSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorOneMinusSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
var (
BlendSourceOver = Blend{
BlendFactorSourceRGB: BlendFactorOne,
BlendFactorSourceAlpha: BlendFactorOne,
BlendFactorDestinationRGB: BlendFactorOneMinusSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorOneMinusSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
var BlendClear = Blend{
BlendFactorSourceRGB: BlendFactorZero,
BlendFactorSourceAlpha: BlendFactorZero,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendClear = Blend{
BlendFactorSourceRGB: BlendFactorZero,
BlendFactorSourceAlpha: BlendFactorZero,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
var BlendCopy = Blend{
BlendFactorSourceRGB: BlendFactorOne,
BlendFactorSourceAlpha: BlendFactorOne,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendCopy = Blend{
BlendFactorSourceRGB: BlendFactorOne,
BlendFactorSourceAlpha: BlendFactorOne,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestination = Blend{
BlendFactorSourceRGB: BlendFactorZero,
BlendFactorSourceAlpha: BlendFactorZero,
BlendFactorDestinationRGB: BlendFactorOne,
BlendFactorDestinationAlpha: BlendFactorOne,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestinationOver = Blend{
BlendFactorSourceRGB: BlendFactorOneMinusDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorOneMinusDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorOne,
BlendFactorDestinationAlpha: BlendFactorOne,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendSourceIn = Blend{
BlendFactorSourceRGB: BlendFactorDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestinationIn = Blend{
BlendFactorSourceRGB: BlendFactorZero,
BlendFactorSourceAlpha: BlendFactorZero,
BlendFactorDestinationRGB: BlendFactorSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendSourceOut = Blend{
BlendFactorSourceRGB: BlendFactorOneMinusDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorOneMinusDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorZero,
BlendFactorDestinationAlpha: BlendFactorZero,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestinationOut = Blend{
BlendFactorSourceRGB: BlendFactorZero,
BlendFactorSourceAlpha: BlendFactorZero,
BlendFactorDestinationRGB: BlendFactorOneMinusSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorOneMinusSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendSourceAtop = Blend{
BlendFactorSourceRGB: BlendFactorDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorOneMinusSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorOneMinusSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendDestinationAtop = Blend{
BlendFactorSourceRGB: BlendFactorOneMinusDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorOneMinusDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendXor = Blend{
BlendFactorSourceRGB: BlendFactorOneMinusDestinationAlpha,
BlendFactorSourceAlpha: BlendFactorOneMinusDestinationAlpha,
BlendFactorDestinationRGB: BlendFactorOneMinusSourceAlpha,
BlendFactorDestinationAlpha: BlendFactorOneMinusSourceAlpha,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
BlendLighter = Blend{
BlendFactorSourceRGB: BlendFactorOne,
BlendFactorSourceAlpha: BlendFactorOne,
BlendFactorDestinationRGB: BlendFactorOne,
BlendFactorDestinationAlpha: BlendFactorOne,
BlendOperationRGB: BlendOperationAdd,
BlendOperationAlpha: BlendOperationAdd,
}
)