internal/byteslice: rename package unsafe

All functions left in the old package unsafe were provided byte slice
views of other types. Rename the package accordingly and avoid a name
clash with the standard library package unsafe.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

gpu/compute.go

@@ -15,8 +15,8 @@ import (
 
 	"gioui.org/f32"
 	"gioui.org/gpu/internal/driver"
+	"gioui.org/internal/byteslice"
 	"gioui.org/internal/f32color"
-	gunsafe "gioui.org/internal/unsafe"
 	"gioui.org/layout"
 	"gioui.org/op"
 )
@@ -459,7 +459,7 @@ restart:
 		m.quads[i].posX = p.X
 		m.quads[i].posY = p.Y
 	}
-	vertexData := gunsafe.BytesView(m.quads)
+	vertexData := byteslice.Slice(m.quads)
 	if len(vertexData) > m.bufSize {
 		if m.buffer != nil {
 			m.buffer.Release()
@@ -757,7 +757,7 @@ func (g *compute) render(tileDims image.Point) error {
 			return err
 		}
 	}
-	g.buffers.scene.buffer.Upload(gunsafe.BytesView(g.enc.scene))
+	g.buffers.scene.buffer.Upload(byteslice.Slice(g.enc.scene))
 
 	w, h := tileDims.X*tileWidthPx, tileDims.Y*tileHeightPx
 	if g.output.size.X != w || g.output.size.Y != h {
@@ -805,7 +805,7 @@ func (g *compute) render(tileDims image.Point) error {
 		}
 	}
 
-	g.buffers.config.Upload(gunsafe.StructView(g.conf))
+	g.buffers.config.Upload(byteslice.Struct(g.conf))
 
 	minSize := int(unsafe.Sizeof(memoryHeader{})) + int(alloc)
 	if minSize > g.buffers.memory.size {
@@ -821,7 +821,7 @@ func (g *compute) render(tileDims image.Point) error {
 		*g.memHeader = memoryHeader{
 			mem_offset: alloc,
 		}
-		g.buffers.memory.buffer.Upload(gunsafe.StructView(g.memHeader))
+		g.buffers.memory.buffer.Upload(byteslice.Struct(g.memHeader))
 		g.buffers.state.buffer.Upload(g.zeros(clearSize))
 
 		if realloced {
@@ -864,7 +864,7 @@ func (g *compute) render(tileDims image.Point) error {
 		g.ctx.MemoryBarrier()
 		t.kernel4.end()
 
-		if err := g.buffers.memory.buffer.Download(gunsafe.StructView(g.memHeader)); err != nil {
+		if err := g.buffers.memory.buffer.Download(byteslice.Struct(g.memHeader)); err != nil {
 			if err == driver.ErrContentLost {
 				continue
 			}

gpu/gpu.go

@@ -21,10 +21,10 @@ import (
 
 	"gioui.org/f32"
 	"gioui.org/gpu/internal/driver"
+	"gioui.org/internal/byteslice"
 	"gioui.org/internal/f32color"
 	"gioui.org/internal/opconst"
 	"gioui.org/internal/ops"
-	gunsafe "gioui.org/internal/unsafe"
 	"gioui.org/layout"
 	"gioui.org/op"
 	"gioui.org/op/clip"
@@ -559,7 +559,7 @@ func (r *renderer) release() {
 
 func newBlitter(ctx driver.Device) *blitter {
 	quadVerts, err := ctx.NewImmutableBuffer(driver.BufferBindingVertices,
-		gunsafe.BytesView([]float32{
+		byteslice.Slice([]float32{
 			-1, +1, 0, 0,
 			+1, +1, 1, 0,
 			-1, -1, 0, 1,

gpu/headless/driver_test.go

@@ -13,8 +13,8 @@ import (
 	"testing"
 
 	"gioui.org/gpu/internal/driver"
+	"gioui.org/internal/byteslice"
 	"gioui.org/internal/f32color"
-	"gioui.org/internal/unsafe"
 )
 
 var dumpImages = flag.Bool("saveimages", false, "save test images")
@@ -66,7 +66,7 @@ func TestInputShader(t *testing.T) {
 	defer p.Release()
 	b.BindProgram(p)
 	buf, err := b.NewImmutableBuffer(driver.BufferBindingVertices,
-		unsafe.BytesView([]float32{
+		byteslice.Slice([]float32{
 			0, .5, .5, 1,
 			-.5, -.5, .5, 1,
 			.5, -.5, .5, 1,

gpu/path.go

@@ -13,8 +13,8 @@ import (
 
 	"gioui.org/f32"
 	"gioui.org/gpu/internal/driver"
+	"gioui.org/internal/byteslice"
 	"gioui.org/internal/f32color"
-	gunsafe "gioui.org/internal/unsafe"
 )
 
 type pather struct {
@@ -185,7 +185,7 @@ func newStenciler(ctx driver.Device) *stenciler {
 		indices[i*6+4] = i*4 + 1
 		indices[i*6+5] = i*4 + 3
 	}
-	indexBuf, err := ctx.NewImmutableBuffer(driver.BufferBindingIndices, gunsafe.BytesView(indices))
+	indexBuf, err := ctx.NewImmutableBuffer(driver.BufferBindingIndices, byteslice.Slice(indices))
 	if err != nil {
 		panic(err)
 	}

internal/byteslice/byteslice.go

@@ -1,14 +1,16 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-package unsafe
+// Package byteslice provides byte slice views of other Go values  such as
+// slices and structs.
+package byteslice
 
 import (
 	"reflect"
 	"unsafe"
 )
 
-// StructView returns a byte slice view of a struct.
-func StructView(s interface{}) []byte {
+// Struct returns a byte slice view of a struct.
+func Struct(s interface{}) []byte {
 	v := reflect.ValueOf(s).Elem()
 	sz := int(v.Type().Size())
 	var res []byte
@@ -19,8 +21,8 @@ func StructView(s interface{}) []byte {
 	return res
 }
 
-// BytesView returns a byte slice view of a slice.
-func BytesView(s interface{}) []byte {
+// Slice returns a byte slice view of a slice.
+func Slice(s interface{}) []byte {
 	v := reflect.ValueOf(s)
 	first := v.Index(0)
 	sz := int(first.Type().Size())

internal/srgb/srgb.go

@@ -7,8 +7,8 @@ import (
 	"runtime"
 	"strings"
 
+	"gioui.org/internal/byteslice"
 	"gioui.org/internal/gl"
-	"gioui.org/internal/unsafe"
 )
 
 // FBO implements an intermediate sRGB FBO
@@ -71,7 +71,7 @@ func (s *FBO) Blit() {
 		s.c.Uniform1i(s.c.GetUniformLocation(prog, "tex"), 0)
 		s.quad = s.c.CreateBuffer()
 		s.c.BindBuffer(gl.ARRAY_BUFFER, s.quad)
-		coords := unsafe.BytesView([]float32{
+		coords := byteslice.Slice([]float32{
 			-1, +1, 0, 1,
 			+1, +1, 1, 1,
 			-1, -1, 0, 0,