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internal/graphicsdriver/metal: Separate GCing the buffers

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Updates #1196
This commit is contained in:
Hajime Hoshi 2021-07-08 02:09:04 +09:00
parent edc2f8b961
commit 337d8d5113
1 changed files with 18 additions and 20 deletions
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38
internal/graphicsdriver/metal/graphics.go
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@ -388,13 +388,7 @@ func pow2(x uintptr) uintptr {
return p2
}
func (g *Graphics) availableBuffer(length uintptr) mtl.Buffer {
if g.cb == (mtl.CommandBuffer{}) {
g.cb = g.cq.MakeCommandBuffer()
}
var newBuf mtl.Buffer
func (g *Graphics) gcBuffers() {
for cb, bs := range g.buffers {
// If the command buffer still lives, the buffer must not be updated.
// TODO: Handle an error?
@ -403,10 +397,6 @@ func (g *Graphics) availableBuffer(length uintptr) mtl.Buffer {
}
for _, b := range bs {
if newBuf == (mtl.Buffer{}) && b.Length() >= length {
newBuf = b
continue
}
if g.unusedBuffers == nil {
g.unusedBuffers = map[mtl.Buffer]struct{}{}
}
@ -416,15 +406,6 @@ func (g *Graphics) availableBuffer(length uintptr) mtl.Buffer {
cb.Release()
}
for b := range g.unusedBuffers {
if b.Length() >= length {
newBuf = b
delete(g.unusedBuffers, b)
break
}
}
// GC unused buffers.
const maxUnusedBuffers = 10
if len(g.unusedBuffers) > maxUnusedBuffers {
bufs := make([]mtl.Buffer, 0, len(g.unusedBuffers))
@ -439,6 +420,21 @@ func (g *Graphics) availableBuffer(length uintptr) mtl.Buffer {
b.Release()
}
}
}
func (g *Graphics) availableBuffer(length uintptr) mtl.Buffer {
if g.cb == (mtl.CommandBuffer{}) {
g.cb = g.cq.MakeCommandBuffer()
}
var newBuf mtl.Buffer
for b := range g.unusedBuffers {
if b.Length() >= length {
newBuf = b
delete(g.unusedBuffers, b)
break
}
}
if newBuf == (mtl.Buffer{}) {
newBuf = g.view.getMTLDevice().MakeBufferWithLength(pow2(length), resourceStorageMode)
@ -1228,6 +1224,8 @@ func (i *Image) mtlTexture() mtl.Texture {
return mtl.Texture{}
}
g.screenDrawable = drawable
// After nextDrawable, it is expected some command buffers are completed.
g.gcBuffers()
}
return g.screenDrawable.Texture()
}