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insure minimal bitblt cost when writing to screen

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This commit is contained in:
payonel 2020-05-22 10:12:05 -07:00
parent a879a181f2
commit 13d19c1bb8
1 changed files with 5 additions and 4 deletions
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9
src/main/scala/li/cil/oc/server/component/GraphicsCard.scala
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@ -31,7 +31,7 @@ import scala.util.matching.Regex
// the save file - a Bad Thing (TM). // the save file - a Bad Thing (TM).
class GraphicsCard(val tier: Int) extends prefab.ManagedEnvironment with DeviceInfo with component.traits.VideoRamAware { class GraphicsCard(val tier: Int) extends prefab.ManagedEnvironment with DeviceInfo with component.traits.VideoRamAware {
override val node = Network.newNode(this, Visibility.Neighbors). override val node: Connector = Network.newNode(this, Visibility.Neighbors).
withComponent("gpu"). withComponent("gpu").
withConnector(). withConnector().
create() create()
@ -196,13 +196,14 @@ class GraphicsCard(val tier: Int) extends prefab.ManagedEnvironment with DeviceI
// large dirty buffers need throttling so their budget cost is more // large dirty buffers need throttling so their budget cost is more
// clean buffers have no budget cost. // clean buffers have no budget cost.
src match { src match {
case page: GpuTextBuffer if page.dirty => dst match { case page: GpuTextBuffer => dst match {
case _: GpuTextBuffer => 0.0 // no cost to write to ram case _: GpuTextBuffer => 0.0 // no cost to write to ram
case _ => // screen target will need the new buffer case _ if page.dirty => // screen target will need the new buffer
// small buffers are cheap, so increase with size of buffer source // small buffers are cheap, so increase with size of buffer source
bitbltCost * (src.getWidth * src.getHeight) / (maxResolution._1 * maxResolution._2) bitbltCost * (src.getWidth * src.getHeight) / (maxResolution._1 * maxResolution._2)
case _ => .001 // bitblt a clean page to screen has a minimal cost
} }
case _ => 0.0 // from screen or from clean buffer is free case _ => 0.0 // from screen is free
} }
} }