Nicolas Cellier uploaded a new version of GraphicsTests to project The Trunk: http://source.squeak.org/trunk/GraphicsTests-nice.62.mcz
==================== Summary ====================
Name: GraphicsTests-nice.62 Author: nice Time: 27 February 2023, 5:05:11.232119 pm UUID: 1490c410-0f9a-a749-a2e2-d8b5539d582f Ancestors: GraphicsTests-mt.60
Fix testAllAlphasRgbMul
The BitBlt primitive for rgbMul rule has been fixed so as to round to nearest paint. The test must reflect this.
=============== Diff against GraphicsTests-mt.60 ===============
Item was changed: ----- Method: BitBltTest>>testAllAlphasRgbMul (in category 'tests') ----- testAllAlphasRgbMul "self run: #testAllAlphasRgbMul" | sourceForm destForm blt correctAlphas | <timeout: 10> correctAlphas := 0. 0 to: 255 do: [:sourceAlpha | sourceForm := Form extent: 1 @ 1 depth: 32. sourceForm bits at: 1 put: sourceAlpha << 24 + (33 << 16) + (25 << 8) + 27. 0 to: 255 do: [:destAlpha | destForm := Form extent: 1 @ 1 depth: 32. destForm bits at: 1 put: destAlpha << 24 + (255 << 16) + (255 << 8) + 255. blt := BitBlt new. blt sourceForm: sourceForm. blt sourceOrigin: 0 @ 0. blt setDestForm: destForm. blt destOrigin: 0 @ 0. blt combinationRule: 37. "rgbMul" blt copyBits. correctAlphas := correctAlphas + + (((blt destForm bits at: 1) digitAt: 4) = (((destAlpha) * (sourceAlpha) / 255) rounded) - + (((blt destForm bits at: 1) digitAt: 4) = ((destAlpha+1) * (sourceAlpha+1)- 1 // 256) ifTrue: [1] ifFalse: [0]) ]]. self assert: 65536 equals: correctAlphas!