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graphicsdriver/opengl: Reduce creation of Float32Array

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Updates #1426
This commit is contained in:
Hajime Hoshi 2020-12-02 22:58:26 +09:00
parent 44e2455c65
commit 3c28bcf3c4
1 changed files with 13 additions and 8 deletions
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21
internal/graphicsdriver/opengl/context_js.go
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@ -386,24 +386,29 @@ func (c *context) uniformFloats(p program, location string, v []float32, typ sha
base = typ.Sub[0].Main
}
arr8 := jsutil.TemporaryUint8Array(len(v) * 4)
arr := js.Global().Get("Float32Array").New(arr8.Get("buffer"), arr8.Get("byteOffset"), len(v))
jsutil.CopySliceToJS(arr, v)
switch base {
case shaderir.Float:
gl.Call("uniform1fv", js.Value(l), arr)
gl.Call("uniform1f", js.Value(l), v[0])
case shaderir.Vec2:
gl.Call("uniform2fv", js.Value(l), arr)
gl.Call("uniform2f", js.Value(l), v[0], v[1])
case shaderir.Vec3:
gl.Call("uniform3fv", js.Value(l), arr)
gl.Call("uniform3f", js.Value(l), v[0], v[1], v[2])
case shaderir.Vec4:
gl.Call("uniform4fv", js.Value(l), arr)
gl.Call("uniform4f", js.Value(l), v[0], v[1], v[2], v[3])
case shaderir.Mat2:
arr8 := jsutil.TemporaryUint8Array(len(v) * 4)
arr := js.Global().Get("Float32Array").New(arr8.Get("buffer"), arr8.Get("byteOffset"), len(v))
jsutil.CopySliceToJS(arr, v)
gl.Call("uniformMatrix2fv", js.Value(l), false, arr)
case shaderir.Mat3:
arr8 := jsutil.TemporaryUint8Array(len(v) * 4)
arr := js.Global().Get("Float32Array").New(arr8.Get("buffer"), arr8.Get("byteOffset"), len(v))
jsutil.CopySliceToJS(arr, v)
gl.Call("uniformMatrix3fv", js.Value(l), false, arr)
case shaderir.Mat4:
arr8 := jsutil.TemporaryUint8Array(len(v) * 4)
arr := js.Global().Get("Float32Array").New(arr8.Get("buffer"), arr8.Get("byteOffset"), len(v))
jsutil.CopySliceToJS(arr, v)
gl.Call("uniformMatrix4fv", js.Value(l), false, arr)
default:
panic(fmt.Sprintf("opengl: unexpected type: %s", typ.String()))