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monogame: Implement SetVertices

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Updates #1078
This commit is contained in:
Hajime Hoshi 2020-04-05 23:26:41 +09:00
parent 08ac91fb50
commit 44088cf14e
1 changed files with 22 additions and 1 deletions
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23
internal/monogame/monogame.go
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@ -17,8 +17,10 @@
package monogame
import (
"reflect"
"runtime"
"syscall/js"
"unsafe"
"github.com/hajimehoshi/ebiten/internal/driver"
)
@ -80,7 +82,26 @@ func (g *Game) NewRenderTarget2D(width, height int) *RenderTarget2D {
}
func (g *Game) SetVertices(vertices []float32, indices []uint16) {
// TODO: Implement this
var vs, is js.Value
{
h := (*reflect.SliceHeader)(unsafe.Pointer(&vertices))
h.Len *= 4
h.Cap *= 4
bs := *(*[]byte)(unsafe.Pointer(h))
runtime.KeepAlive(vertices)
vs = js.Global().Get("Uint8Array").New(len(bs))
js.CopyBytesToJS(vs, bs)
}
{
h := (*reflect.SliceHeader)(unsafe.Pointer(&indices))
h.Len *= 2
h.Cap *= 2
bs := *(*[]byte)(unsafe.Pointer(h))
runtime.KeepAlive(indices)
is = js.Global().Get("Uint8Array").New(len(bs))
js.CopyBytesToJS(is, bs)
}
g.binding.Call("SetVertices", vs, is)
}
type RenderTarget2D struct {