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graphics: Make vertices a function

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This commit is contained in:
Hajime Hoshi 2016-10-24 22:43:59 +09:00
parent fb18ad0bf7
commit 8d550a4007
2 changed files with 9 additions and 18 deletions
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7
imageimpl.go
View File

@ -128,9 +128,8 @@ func (i *imageImpl) DrawImage(image *Image, options *DrawImageOptions) error {
}
}
w, h := image.impl.restorable.Size()
quads := &textureQuads{parts: parts, width: w, height: h}
vertices := quads.vertices()
if len(vertices) == 0 {
vs := vertices(parts, w, h)
if len(vs) == 0 {
return nil
}
if i == image.impl {
@ -144,7 +143,7 @@ func (i *imageImpl) DrawImage(image *Image, options *DrawImageOptions) error {
geom := options.GeoM
colorm := options.ColorM
mode := opengl.CompositeMode(options.CompositeMode)
if err := i.restorable.DrawImage(image.impl.restorable, vertices, &geom, &colorm, mode); err != nil {
if err := i.restorable.DrawImage(image.impl.restorable, vs, &geom, &colorm, mode); err != nil {
return err
}
return nil

20
imageparts.go
View File

@ -77,30 +77,22 @@ func v(y, height2p int) int16 {
return int16(math.MaxInt16 * y / height2p)
}
type textureQuads struct {
parts ImageParts
width int
height int
}
func (t *textureQuads) vertices() []uint8 {
func vertices(parts ImageParts, width, height int) []uint8 {
totalSize := graphics.QuadVertexSizeInBytes()
oneSize := totalSize / 4
l := t.parts.Len()
l := parts.Len()
vertices := make([]uint8, l*totalSize)
p := t.parts
w, h := t.width, t.height
width2p := graphics.NextPowerOf2Int(w)
height2p := graphics.NextPowerOf2Int(h)
width2p := graphics.NextPowerOf2Int(width)
height2p := graphics.NextPowerOf2Int(height)
n := 0
vs := make([]int16, 16)
for i := 0; i < l; i++ {
dx0, dy0, dx1, dy1 := p.Dst(i)
dx0, dy0, dx1, dy1 := parts.Dst(i)
if dx0 == dx1 || dy0 == dy1 {
continue
}
x0, y0, x1, y1 := int16(dx0), int16(dy0), int16(dx1), int16(dy1)
sx0, sy0, sx1, sy1 := p.Src(i)
sx0, sy0, sx1, sy1 := parts.Src(i)
if sx0 == sx1 || sy0 == sy1 {
continue
}