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gpu,gpu/shaders: revert attempt to fix path gaps

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This is effectively a revert of [0], reintroducing the path gaps
described in [1]. A follow-up change will implement another attempt.

[0] https://gioui.org/commit/2feec23561cd84d6b8ddbab84a202df66b123208
[1] https://github.com/linebender/piet-gpu/issues/62

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2021-03-13 10:09:40 +01:00
parent 65a2410bb9
commit 2b21b48a7c
9 changed files with 59 additions and 133 deletions
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gpu/gpu.go
+4 -4
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@@ -1506,16 +1506,16 @@ func (d *drawOps) boundsForTransformedRect(r f32.Rectangle, tr f32.Affine2D) (au
buf := aux
bo := binary.LittleEndian
bo.PutUint32(buf, 0) // Contour
ops.EncodeCommand(buf[4:], scene.Line(r.Min, f32.Pt(r.Max.X, r.Min.Y), false, 0))
ops.EncodeCommand(buf[4:], scene.Line(r.Min, f32.Pt(r.Max.X, r.Min.Y), false))
buf = buf[4+scene.CommandSize:]
bo.PutUint32(buf, 0)
ops.EncodeCommand(buf[4:], scene.Line(f32.Pt(r.Max.X, r.Min.Y), r.Max, false, 0))
ops.EncodeCommand(buf[4:], scene.Line(f32.Pt(r.Max.X, r.Min.Y), r.Max, false))
buf = buf[4+scene.CommandSize:]
bo.PutUint32(buf, 0)
ops.EncodeCommand(buf[4:], scene.Line(r.Max, f32.Pt(r.Min.X, r.Max.Y), false, 0))
ops.EncodeCommand(buf[4:], scene.Line(r.Max, f32.Pt(r.Min.X, r.Max.Y), false))
buf = buf[4+scene.CommandSize:]
bo.PutUint32(buf, 0)
ops.EncodeCommand(buf[4:], scene.Line(f32.Pt(r.Min.X, r.Max.Y), r.Min, false, 0))
ops.EncodeCommand(buf[4:], scene.Line(f32.Pt(r.Min.X, r.Max.Y), r.Min, false))
}
// establish the transform mapping from bounds rectangle to transformed corners