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internal/graphicsdriver: bug fix: render semi-transparent vectors correctly

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Closes #1933
This commit is contained in:
Hajime Hoshi 2022-01-06 03:00:23 +09:00
parent 1f17a63084
commit 202f642395
5 changed files with 8 additions and 7 deletions
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5
examples/vector/main.go
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@ -43,7 +43,7 @@ const (
screenHeight = 480 screenHeight = 480
) )
func drawEbitenText(screen *ebiten.Image) { func drawEbitenText(screen *ebiten.Image, counter int) {
var path vector.Path var path vector.Path
// E // E
@ -119,6 +119,7 @@ func drawEbitenText(screen *ebiten.Image) {
vs[i].ColorR = 0xdb / float32(0xff) vs[i].ColorR = 0xdb / float32(0xff)
vs[i].ColorG = 0x56 / float32(0xff) vs[i].ColorG = 0x56 / float32(0xff)
vs[i].ColorB = 0x20 / float32(0xff) vs[i].ColorB = 0x20 / float32(0xff)
vs[i].ColorA = float32((counter/30)%2)/2 + 0.5
} }
screen.DrawTriangles(vs, is, emptySubImage, op) screen.DrawTriangles(vs, is, emptySubImage, op)
} }
@ -245,7 +246,7 @@ func (g *Game) Update() error {
func (g *Game) Draw(screen *ebiten.Image) { func (g *Game) Draw(screen *ebiten.Image) {
screen.Fill(color.White) screen.Fill(color.White)
drawEbitenText(screen) drawEbitenText(screen, g.counter)
drawEbitenLogo(screen, 20, 90) drawEbitenLogo(screen, 20, 90)
drawArc(screen, g.counter) drawArc(screen, g.counter)
drawWave(screen, g.counter) drawWave(screen, g.counter)

4
internal/graphicsdriver/metal/graphics.go
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@ -737,13 +737,13 @@ func (g *Graphics) Initialize() error {
BackFaceStencil: mtl.StencilDescriptor{ BackFaceStencil: mtl.StencilDescriptor{
StencilFailureOperation: mtl.StencilOperationKeep, StencilFailureOperation: mtl.StencilOperationKeep,
DepthFailureOperation: mtl.StencilOperationKeep, DepthFailureOperation: mtl.StencilOperationKeep,
DepthStencilPassOperation: mtl.StencilOperationKeep, DepthStencilPassOperation: mtl.StencilOperationZero,
StencilCompareFunction: mtl.CompareFunctionNotEqual, StencilCompareFunction: mtl.CompareFunctionNotEqual,
}, },
FrontFaceStencil: mtl.StencilDescriptor{ FrontFaceStencil: mtl.StencilDescriptor{
StencilFailureOperation: mtl.StencilOperationKeep, StencilFailureOperation: mtl.StencilOperationKeep,
DepthFailureOperation: mtl.StencilOperationKeep, DepthFailureOperation: mtl.StencilOperationKeep,
DepthStencilPassOperation: mtl.StencilOperationKeep, DepthStencilPassOperation: mtl.StencilOperationZero,
StencilCompareFunction: mtl.CompareFunctionNotEqual, StencilCompareFunction: mtl.CompareFunctionNotEqual,
}, },
}) })

2
internal/graphicsdriver/opengl/context_desktop.go
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@ -520,6 +520,6 @@ func (c *context) beginStencilWithEvenOddRule() {
func (c *context) endStencilWithEvenOddRule() { func (c *context) endStencilWithEvenOddRule() {
gl.StencilFunc(gl.NOTEQUAL, 0x00, 0xff) gl.StencilFunc(gl.NOTEQUAL, 0x00, 0xff)
gl.StencilOp(gl.KEEP, gl.KEEP, gl.KEEP) gl.StencilOp(gl.KEEP, gl.KEEP, gl.ZERO)
gl.ColorMask(true, true, true, true) gl.ColorMask(true, true, true, true)
} }

2
internal/graphicsdriver/opengl/context_js.go
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@ -660,6 +660,6 @@ func (c *context) beginStencilWithEvenOddRule() {
func (c *context) endStencilWithEvenOddRule() { func (c *context) endStencilWithEvenOddRule() {
gl := c.gl gl := c.gl
gl.stencilFunc.Invoke(gles.NOTEQUAL, 0x00, 0xff) gl.stencilFunc.Invoke(gles.NOTEQUAL, 0x00, 0xff)
gl.stencilOp.Invoke(gles.KEEP, gles.KEEP, gles.KEEP) gl.stencilOp.Invoke(gles.KEEP, gles.KEEP, gles.ZERO)
gl.colorMask.Invoke(true, true, true, true) gl.colorMask.Invoke(true, true, true, true)
} }

2
internal/graphicsdriver/opengl/context_mobile.go
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@ -488,6 +488,6 @@ func (c *context) beginStencilWithEvenOddRule() {
func (c *context) endStencilWithEvenOddRule() { func (c *context) endStencilWithEvenOddRule() {
c.ctx.StencilFunc(gles.NOTEQUAL, 0x00, 0xff) c.ctx.StencilFunc(gles.NOTEQUAL, 0x00, 0xff)
c.ctx.StencilOp(gles.KEEP, gles.KEEP, gles.KEEP) c.ctx.StencilOp(gles.KEEP, gles.KEEP, gles.ZERO)
c.ctx.ColorMask(true, true, true, true) c.ctx.ColorMask(true, true, true, true)
} }