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internal/restorable: reland: use a smaller size rectangle for staleRegion

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This commit is contained in:
Hajime Hoshi 2023-02-24 18:37:41 +09:00
parent f58d7e1ab5
commit e36007a3a3
1 changed files with 34 additions and 11 deletions
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45
internal/restorable/image.go
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@ -17,6 +17,7 @@ package restorable
import (
"fmt"
"image"
"math"
"github.com/hajimehoshi/ebiten/v2/internal/graphics"
"github.com/hajimehoshi/ebiten/v2/internal/graphicscommand"
@ -269,7 +270,14 @@ func (i *Image) BasePixelsForTesting() *Pixels {
// makeStale makes the image stale.
func (i *Image) makeStale(rect image.Rectangle) {
i.stale = true
i.staleRegion = i.staleRegion.Union(i.basePixels.Region()).Union(rect)
r := i.staleRegion
r = r.Union(i.basePixels.Region())
for _, d := range i.drawTrianglesHistory {
r = r.Union(regionToRectangle(d.dstRegion))
}
r = r.Union(rect)
i.staleRegion = r
i.basePixels = Pixels{}
i.clearDrawTrianglesHistory()
@ -338,7 +346,7 @@ func (i *Image) WritePixels(pixels []byte, x, y, width, height int) {
// Records for DrawTriangles cannot come before records for WritePixels.
if len(i.drawTrianglesHistory) > 0 {
i.makeStale(image.Rect(0, 0, i.width, i.height))
i.makeStale(image.Rect(x, y, x+width, y+height))
return
}
@ -386,8 +394,9 @@ func (i *Image) DrawTriangles(srcs [graphics.ShaderImageCount]*Image, offsets [g
}
}
if srcstale || !needsRestoring() || !i.needsRestoring() {
i.makeStale(image.Rect(0, 0, i.width, i.height))
// Even if the image is already stale, call makeStale to extend the stale region.
if srcstale || !needsRestoring() || !i.needsRestoring() || i.stale {
i.makeStale(regionToRectangle(dstRegion))
} else {
i.appendDrawTrianglesHistory(srcs, offsets, vertices, indices, blend, dstRegion, srcRegion, shader, uniforms, evenOdd)
}
@ -405,13 +414,13 @@ func (i *Image) DrawTriangles(srcs [graphics.ShaderImageCount]*Image, offsets [g
// appendDrawTrianglesHistory appends a draw-image history item to the image.
func (i *Image) appendDrawTrianglesHistory(srcs [graphics.ShaderImageCount]*Image, offsets [graphics.ShaderImageCount - 1][2]float32, vertices []float32, indices []uint16, blend graphicsdriver.Blend, dstRegion, srcRegion graphicsdriver.Region, shader *Shader, uniforms []uint32, evenOdd bool) {
if i.stale || !i.needsRestoring() {
return
panic("restorable: an image must not be stale or need restoring at appendDrawTrianglesHistory")
}
// TODO: Would it be possible to merge draw image history items?
const maxDrawTrianglesHistoryCount = 1024
if len(i.drawTrianglesHistory)+1 > maxDrawTrianglesHistoryCount {
i.makeStale(image.Rect(0, 0, i.width, i.height))
i.makeStale(regionToRectangle(dstRegion))
return
}
// All images must be resolved and not stale each after frame.
@ -467,7 +476,8 @@ func (i *Image) makeStaleIfDependingOn(target *Image) {
return
}
if i.dependsOn(target) {
i.makeStale(image.Rect(0, 0, i.width, i.height))
// There is no new region to make stale.
i.makeStale(image.Rectangle{})
}
}
@ -477,16 +487,21 @@ func (i *Image) makeStaleIfDependingOnShader(shader *Shader) {
return
}
if i.dependsOnShader(shader) {
i.makeStale(image.Rect(0, 0, i.width, i.height))
// There is no new region to make stale.
i.makeStale(image.Rectangle{})
}
}
// readPixelsFromGPU reads the pixels from GPU and resolves the image's 'stale' state.
func (i *Image) readPixelsFromGPU(graphicsDriver graphicsdriver.Graphics) error {
i.basePixels = Pixels{}
r := i.staleRegion
if len(i.drawTrianglesHistory) > 0 {
r = image.Rect(0, 0, i.width, i.height)
var r image.Rectangle
if i.stale {
r = i.staleRegion
} else {
for _, d := range i.drawTrianglesHistory {
r = r.Union(regionToRectangle(d.dstRegion))
}
}
if !r.Empty() {
var pix []byte
@ -678,3 +693,11 @@ func (i *Image) clearDrawTrianglesHistory() {
func (i *Image) InternalSize() (int, int) {
return i.image.InternalSize()
}
func regionToRectangle(region graphicsdriver.Region) image.Rectangle {
return image.Rect(
int(math.Floor(float64(region.X))),
int(math.Floor(float64(region.Y))),
int(math.Ceil(float64(region.X+region.Width))),
int(math.Ceil(float64(region.Y+region.Height))))
}