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restorable: Bug fix: Clearing framebuffers was not complete

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This commit is contained in:
Hajime Hoshi 2018-02-25 23:53:27 +09:00
parent 86671f3337
commit 519a75e5a8
1 changed files with 5 additions and 4 deletions
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9
internal/restorable/image.go
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@ -17,11 +17,12 @@ package restorable
import (
"errors"
"image/color"
"math"
"runtime"
"github.com/hajimehoshi/ebiten/internal/affine"
"github.com/hajimehoshi/ebiten/internal/graphics"
"github.com/hajimehoshi/ebiten/internal/math"
emath "github.com/hajimehoshi/ebiten/internal/math"
"github.com/hajimehoshi/ebiten/internal/opengl"
)
@ -153,8 +154,8 @@ func (i *Image) clearIfVolatile() {
w, h := i.image.Size()
x0 := float32(0)
y0 := float32(0)
x1 := float32(w) + float32(i.paddingX0+i.paddingX1)
y1 := float32(h) + float32(i.paddingY0+i.paddingY1)
x1 := float32(w + int(math.Ceil(i.paddingX0+i.paddingX1)))
y1 := float32(h + int(math.Ceil(i.paddingY0+i.paddingY1)))
// For the rule of values, see vertices.go.
clearVertices := []float32{
x0, y0, 0, 0, 1, 1,
@ -219,7 +220,7 @@ func (i *Image) appendDrawImageHistory(image *Image, vertices []float32, colorm
// Note that this must not be called until context is available.
func (i *Image) At(x, y int) (color.RGBA, error) {
w, h := i.image.Size()
w2, h2 := math.NextPowerOf2Int(w), math.NextPowerOf2Int(h)
w2, h2 := emath.NextPowerOf2Int(w), emath.NextPowerOf2Int(h)
if x < 0 || y < 0 || w2 <= x || h2 <= y {
return color.RGBA{}, nil
}