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heavily optimize Canvas.MakePicture with PictureData

This commit is contained in:
faiface 2017-03-20 19:54:59 +01:00
parent bf5ff044b2
commit 4c526867a4
1 changed files with 10 additions and 1 deletions
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11
pixelgl/canvas.go
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@ -102,7 +102,16 @@ func (c *Canvas) MakePicture(p pixel.Picture) pixel.TargetPicture {
bx, by, bw, bh := intBounds(bounds) bx, by, bw, bh := intBounds(bounds)
pixels := make([]uint8, 4*bw*bh) pixels := make([]uint8, 4*bw*bh)
if p, ok := p.(pixel.PictureColor); ok {
if pd, ok := p.(*pixel.PictureData); ok {
// PictureData short path
for i, nrgba := range pd.Pix {
pixels[i*4+0] = nrgba.R
pixels[i*4+1] = nrgba.G
pixels[i*4+2] = nrgba.B
pixels[i*4+3] = nrgba.A
}
} else if p, ok := p.(pixel.PictureColor); ok {
for y := 0; y < bh; y++ { for y := 0; y < bh; y++ {
for x := 0; x < bw; x++ { for x := 0; x < bw; x++ {
at := pixel.V( at := pixel.V(