internal/graphicsdriver: refactoring: use image.Rectangle

internal/graphicscommand/command.go

@@ -16,6 +16,7 @@ package graphicscommand
 
 import (
 	"fmt"
+	"image"
 	"math"
 	"strings"
 
@@ -427,15 +428,12 @@ func (c *writePixelsCommand) Exec(graphicsDriver graphicsdriver.Graphics, indexO
 type readPixelsCommand struct {
 	result []byte
 	img    *Image
-	x      int
+	region image.Rectangle
-	y      int
-	width  int
-	height int
 }
 
 // Exec executes a readPixelsCommand.
 func (c *readPixelsCommand) Exec(graphicsDriver graphicsdriver.Graphics, indexOffset int) error {
-	if err := c.img.image.ReadPixels(c.result, c.x, c.y, c.width, c.height); err != nil {
+	if err := c.img.image.ReadPixels(c.result, c.region); err != nil {
 		return err
 	}
 	return nil

internal/graphicscommand/image.go

@@ -163,14 +163,11 @@ func (i *Image) DrawTriangles(srcs [graphics.ShaderImageCount]*Image, offsets [g
 
 // ReadPixels reads the image's pixels.
 // ReadPixels returns an error when an error happens in the graphics driver.
-func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, buf []byte, x, y, width, height int) error {
+func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, buf []byte, region image.Rectangle) error {
 	i.flushBufferedWritePixels()
 	c := &readPixelsCommand{
 		img:    i,
-		x:      x,
+		region: region,
-		y:      y,
-		width:  width,
-		height: height,
 		result: buf,
 	}
 	theCommandQueue.Enqueue(c)
@@ -180,13 +177,10 @@ func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, buf []byte, x
 	return nil
 }
 
-func (i *Image) WritePixels(pixels []byte, x, y, width, height int) {
+func (i *Image) WritePixels(pixels []byte, region image.Rectangle) {
 	i.bufferedWP = append(i.bufferedWP, &graphicsdriver.WritePixelsArgs{
 		Pixels: pixels,
-		X:      x,
+		Region: region,
-		Y:      y,
-		Width:  width,
-		Height: height,
 	})
 	addImageWithBuffer(i)
 }
@@ -228,7 +222,7 @@ func (i *Image) dumpTo(w io.Writer, graphicsDriver graphicsdriver.Graphics, blac
 	}
 
 	pix := make([]byte, 4*i.width*i.height)
-	if err := i.ReadPixels(graphicsDriver, pix, 0, 0, i.width, i.height); err != nil {
+	if err := i.ReadPixels(graphicsDriver, pix, image.Rect(0, 0, i.width, i.height)); err != nil {
 		return err
 	}
 

internal/graphicscommand/image_test.go

@@ -16,6 +16,7 @@ package graphicscommand_test
 
 import (
 	"fmt"
+	"image"
 	"image/color"
 	"testing"
 
@@ -66,7 +67,7 @@ func TestClear(t *testing.T) {
 	dst.DrawTriangles([graphics.ShaderImageCount]*graphicscommand.Image{src}, [graphics.ShaderImageCount - 1][2]float32{}, vs, is, graphicsdriver.BlendClear, dr, graphicsdriver.Region{}, nearestFilterShader, nil, false)
 
 	pix := make([]byte, 4*w*h)
-	if err := dst.ReadPixels(ui.GraphicsDriverForTesting(), pix, 0, 0, w, h); err != nil {
+	if err := dst.ReadPixels(ui.GraphicsDriverForTesting(), pix, image.Rect(0, 0, w, h)); err != nil {
 		t.Fatal(err)
 	}
 	for j := 0; j < h/2; j++ {
@@ -96,7 +97,7 @@ func TestWritePixelsPartAfterDrawTriangles(t *testing.T) {
 	}
 	dst.DrawTriangles([graphics.ShaderImageCount]*graphicscommand.Image{clr}, [graphics.ShaderImageCount - 1][2]float32{}, vs, is, graphicsdriver.BlendClear, dr, graphicsdriver.Region{}, nearestFilterShader, nil, false)
 	dst.DrawTriangles([graphics.ShaderImageCount]*graphicscommand.Image{src}, [graphics.ShaderImageCount - 1][2]float32{}, vs, is, graphicsdriver.BlendSourceOver, dr, graphicsdriver.Region{}, nearestFilterShader, nil, false)
-	dst.WritePixels(make([]byte, 4), 0, 0, 1, 1)
+	dst.WritePixels(make([]byte, 4), image.Rect(0, 0, 1, 1))
 
 	// TODO: Check the result.
 }
@@ -120,7 +121,7 @@ func TestShader(t *testing.T) {
 	dst.DrawTriangles([graphics.ShaderImageCount]*graphicscommand.Image{}, [graphics.ShaderImageCount - 1][2]float32{}, vs, is, graphicsdriver.BlendSourceOver, dr, graphicsdriver.Region{}, s, nil, false)
 
 	pix := make([]byte, 4*w*h)
-	if err := dst.ReadPixels(g, pix, 0, 0, w, h); err != nil {
+	if err := dst.ReadPixels(g, pix, image.Rect(0, 0, w, h)); err != nil {
 		t.Fatal(err)
 	}
 	for j := 0; j < h; j++ {

internal/graphicsdriver/directx/image11_windows.go

@@ -16,6 +16,7 @@ package directx
 
 import (
 	"fmt"
+	"image"
 	"unsafe"
 
 	"github.com/hajimehoshi/ebiten/v2/internal/graphics"
@@ -79,10 +80,10 @@ func (i *image11) IsInvalidated() bool {
 	return false
 }
 
-func (i *image11) ReadPixels(buf []byte, x, y, width, height int) error {
+func (i *image11) ReadPixels(buf []byte, region image.Rectangle) error {
 	staging, err := i.graphics.device.CreateTexture2D(&_D3D11_TEXTURE2D_DESC{
-		Width:     uint32(width),
+		Width:     uint32(region.Dx()),
-		Height:    uint32(height),
+		Height:    uint32(region.Dy()),
 		MipLevels: 0,
 		ArraySize: 1,
 		Format:    _DXGI_FORMAT_R8G8B8A8_UNORM,
@@ -101,11 +102,11 @@ func (i *image11) ReadPixels(buf []byte, x, y, width, height int) error {
 	defer staging.Release()
 
 	i.graphics.deviceContext.CopySubresourceRegion(unsafe.Pointer(staging), 0, 0, 0, 0, unsafe.Pointer(i.texture), 0, &_D3D11_BOX{
-		left:   uint32(x),
+		left:   uint32(region.Min.X),
-		top:    uint32(y),
+		top:    uint32(region.Min.Y),
 		front:  0,
-		right:  uint32(x + width),
+		right:  uint32(region.Max.X),
-		bottom: uint32(y + height),
+		bottom: uint32(region.Max.Y),
 		back:   1,
 	})
 
@@ -115,12 +116,12 @@ func (i *image11) ReadPixels(buf []byte, x, y, width, height int) error {
 	}
 
 	stride := int(mapped.RowPitch)
-	src := unsafe.Slice((*byte)(mapped.pData), stride*height)
+	src := unsafe.Slice((*byte)(mapped.pData), stride*region.Dy())
-	if stride == 4*width {
+	if stride == 4*region.Dx() {
 		copy(buf, src)
 	} else {
-		for j := 0; j < height; j++ {
+		for j := 0; j < region.Dy(); j++ {
-			copy(buf[j*4*width:(j+1)*4*width], src[j*stride:j*stride+4*width])
+			copy(buf[j*4*region.Dx():(j+1)*4*region.Dx()], src[j*stride:j*stride+4*region.Dx()])
 		}
 	}
 
@@ -132,13 +133,13 @@ func (i *image11) ReadPixels(buf []byte, x, y, width, height int) error {
 func (i *image11) WritePixels(args []*graphicsdriver.WritePixelsArgs) error {
 	for _, a := range args {
 		i.graphics.deviceContext.UpdateSubresource(unsafe.Pointer(i.texture), 0, &_D3D11_BOX{
-			left:   uint32(a.X),
+			left:   uint32(a.Region.Min.X),
-			top:    uint32(a.Y),
+			top:    uint32(a.Region.Min.Y),
 			front:  0,
-			right:  uint32(a.X + a.Width),
+			right:  uint32(a.Region.Max.X),
-			bottom: uint32(a.Y + a.Height),
+			bottom: uint32(a.Region.Max.Y),
 			back:   1,
-		}, unsafe.Pointer(&a.Pixels[0]), uint32(4*a.Width), 0)
+		}, unsafe.Pointer(&a.Pixels[0]), uint32(4*a.Region.Dx()), 0)
 	}
 	return nil
 }

internal/graphicsdriver/directx/image12_windows.go

@@ -17,6 +17,7 @@ package directx
 import (
 	"errors"
 	"fmt"
+	"image"
 	"unsafe"
 
 	"github.com/hajimehoshi/ebiten/v2/internal/graphics"
@@ -71,7 +72,7 @@ func (*image12) IsInvalidated() bool {
 	return false
 }
 
-func (i *image12) ReadPixels(buf []byte, x, y, width, height int) error {
+func (i *image12) ReadPixels(buf []byte, region image.Rectangle) error {
 	if i.screen {
 		return errors.New("directx: Pixels cannot be called on the screen")
 	}
@@ -83,8 +84,8 @@ func (i *image12) ReadPixels(buf []byte, x, y, width, height int) error {
 	desc := _D3D12_RESOURCE_DESC{
 		Dimension:        _D3D12_RESOURCE_DIMENSION_TEXTURE2D,
 		Alignment:        0,
-		Width:            uint64(width),
+		Width:            uint64(region.Dx()),
-		Height:           uint32(height),
+		Height:           uint32(region.Dy()),
 		DepthOrArraySize: 1,
 		MipLevels:        0,
 		Format:           _DXGI_FORMAT_R8G8B8A8_UNORM,
@@ -126,11 +127,11 @@ func (i *image12) ReadPixels(buf []byte, x, y, width, height int) error {
 	i.graphics.needFlushCopyCommandList = true
 	i.graphics.copyCommandList.CopyTextureRegion_PlacedFootPrint_SubresourceIndex(
 		&dst, 0, 0, 0, &src, &_D3D12_BOX{
-			left:   uint32(x),
+			left:   uint32(region.Min.X),
-			top:    uint32(y),
+			top:    uint32(region.Min.Y),
 			front:  0,
-			right:  uint32(x + width),
+			right:  uint32(region.Max.X),
-			bottom: uint32(y + height),
+			bottom: uint32(region.Max.Y),
 			back:   1,
 		})
 
@@ -139,8 +140,8 @@ func (i *image12) ReadPixels(buf []byte, x, y, width, height int) error {
 	}
 
 	dstBytes := unsafe.Slice((*byte)(unsafe.Pointer(m)), totalBytes)
-	for j := 0; j < height; j++ {
+	for j := 0; j < region.Dy(); j++ {
-		copy(buf[j*width*4:(j+1)*width*4], dstBytes[j*int(layouts.Footprint.RowPitch):])
+		copy(buf[j*region.Dx()*4:(j+1)*region.Dx()*4], dstBytes[j*int(layouts.Footprint.RowPitch):])
 	}
 
 	readingStagingBuffer.Unmap(0, nil)
@@ -157,30 +158,16 @@ func (i *image12) WritePixels(args []*graphicsdriver.WritePixelsArgs) error {
 		return err
 	}
 
-	minX := i.width
+	var region image.Rectangle
-	minY := i.height
-	maxX := 0
-	maxY := 0
 	for _, a := range args {
-		if minX > a.X {
+		region = region.Union(a.Region)
-			minX = a.X
-		}
-		if minY > a.Y {
-			minY = a.Y
-		}
-		if maxX < a.X+a.Width {
-			maxX = a.X + a.Width
-		}
-		if maxY < a.Y+a.Height {
-			maxY = a.Y + a.Height
-		}
 	}
 
 	desc := _D3D12_RESOURCE_DESC{
 		Dimension:        _D3D12_RESOURCE_DIMENSION_TEXTURE2D,
 		Alignment:        0,
-		Width:            uint64(maxX - minX),
+		Width:            uint64(region.Dx()),
-		Height:           uint32(maxY - minY),
+		Height:           uint32(region.Dy()),
 		DepthOrArraySize: 1,
 		MipLevels:        0,
 		Format:           _DXGI_FORMAT_R8G8B8A8_UNORM,
@@ -211,8 +198,8 @@ func (i *image12) WritePixels(args []*graphicsdriver.WritePixelsArgs) error {
 
 	srcBytes := unsafe.Slice((*byte)(unsafe.Pointer(m)), totalBytes)
 	for _, a := range args {
-		for j := 0; j < a.Height; j++ {
+		for j := 0; j < a.Region.Dy(); j++ {
-			copy(srcBytes[((a.Y-minY)+j)*int(layouts.Footprint.RowPitch)+(a.X-minX)*4:], a.Pixels[j*a.Width*4:(j+1)*a.Width*4])
+			copy(srcBytes[((a.Region.Min.Y-region.Min.Y)+j)*int(layouts.Footprint.RowPitch)+(a.Region.Min.X-region.Min.X)*4:], a.Pixels[j*a.Region.Dx()*4:(j+1)*a.Region.Dx()*4])
 		}
 	}
 
@@ -228,12 +215,12 @@ func (i *image12) WritePixels(args []*graphicsdriver.WritePixelsArgs) error {
 			PlacedFootprint: layouts,
 		}
 		i.graphics.copyCommandList.CopyTextureRegion_SubresourceIndex_PlacedFootPrint(
-			&dst, uint32(a.X), uint32(a.Y), 0, &src, &_D3D12_BOX{
+			&dst, uint32(a.Region.Min.X), uint32(a.Region.Min.Y), 0, &src, &_D3D12_BOX{
-				left:   uint32(a.X - minX),
+				left:   uint32(a.Region.Min.X - region.Min.X),
-				top:    uint32(a.Y - minY),
+				top:    uint32(a.Region.Min.Y - region.Min.Y),
 				front:  0,
-				right:  uint32(a.X - minX + a.Width),
+				right:  uint32(a.Region.Max.X - region.Min.X),
-				bottom: uint32(a.Y - minY + a.Height),
+				bottom: uint32(a.Region.Max.Y - region.Min.Y),
 				back:   1,
 			})
 	}

internal/graphicsdriver/graphics.go

@@ -15,6 +15,8 @@
 package graphicsdriver
 
 import (
+	"image"
+
 	"github.com/hajimehoshi/ebiten/v2/internal/graphics"
 	"github.com/hajimehoshi/ebiten/v2/internal/shaderir"
 )
@@ -65,7 +67,7 @@ type Image interface {
 	ID() ImageID
 	Dispose()
 	IsInvalidated() bool
-	ReadPixels(buf []byte, x, y, width, height int) error
+	ReadPixels(buf []byte, region image.Rectangle) error
 	WritePixels(args []*WritePixelsArgs) error
 }
 
@@ -73,10 +75,7 @@ type ImageID int
 
 type WritePixelsArgs struct {
 	Pixels []byte
-	X      int
+	Region image.Rectangle
-	Y      int
-	Width  int
-	Height int
 }
 
 type Shader interface {

internal/graphicsdriver/metal/graphics_darwin.go

@@ -16,6 +16,7 @@ package metal
 
 import (
 	"fmt"
+	"image"
 	"math"
 	"runtime"
 	"sort"
@@ -815,17 +816,17 @@ func (i *Image) syncTexture() {
 	cb.WaitUntilCompleted()
 }
 
-func (i *Image) ReadPixels(buf []byte, x, y, width, height int) error {
+func (i *Image) ReadPixels(buf []byte, region image.Rectangle) error {
-	if got, want := len(buf), 4*width*height; got != want {
+	if got, want := len(buf), 4*region.Dx()*region.Dy(); got != want {
 		return fmt.Errorf("metal: len(buf) must be %d but %d at ReadPixels", want, got)
 	}
 
 	i.graphics.flushIfNeeded(false)
 	i.syncTexture()
 
-	i.texture.GetBytes(&buf[0], uintptr(4*width), mtl.Region{
+	i.texture.GetBytes(&buf[0], uintptr(4*region.Dx()), mtl.Region{
-		Origin: mtl.Origin{X: x, Y: y},
+		Origin: mtl.Origin{X: region.Min.X, Y: region.Min.Y},
-		Size:   mtl.Size{Width: width, Height: height, Depth: 1},
+		Size:   mtl.Size{Width: region.Dx(), Height: region.Dy(), Depth: 1},
 	}, 0)
 	return nil
 }
@@ -836,26 +837,10 @@ func (i *Image) WritePixels(args []*graphicsdriver.WritePixelsArgs) error {
 	g.flushRenderCommandEncoderIfNeeded()
 
 	// Calculate the smallest texture size to include all the values in args.
-	minX := math.MaxInt32
+	var region image.Rectangle
-	minY := math.MaxInt32
-	maxX := 0
-	maxY := 0
 	for _, a := range args {
-		if minX > a.X {
+		region = region.Union(a.Region)
-			minX = a.X
 	}
-		if maxX < a.X+a.Width {
-			maxX = a.X + a.Width
-		}
-		if minY > a.Y {
-			minY = a.Y
-		}
-		if maxY < a.Y+a.Height {
-			maxY = a.Y + a.Height
-		}
-	}
-	w := maxX - minX
-	h := maxY - minY
 
 	// Use a temporary texture to send pixels asynchronously, whichever the memory is shared (e.g., iOS) or
 	// managed (e.g., macOS). A temporary texture is needed since ReplaceRegion tries to sync the pixel
@@ -864,8 +849,8 @@ func (i *Image) WritePixels(args []*graphicsdriver.WritePixelsArgs) error {
 	td := mtl.TextureDescriptor{
 		TextureType: mtl.TextureType2D,
 		PixelFormat: mtl.PixelFormatRGBA8UNorm,
-		Width:       w,
+		Width:       region.Dx(),
-		Height:      h,
+		Height:      region.Dy(),
 		StorageMode: storageMode,
 		Usage:       mtl.TextureUsageShaderRead | mtl.TextureUsageRenderTarget,
 	}
@@ -874,9 +859,9 @@ func (i *Image) WritePixels(args []*graphicsdriver.WritePixelsArgs) error {
 
 	for _, a := range args {
 		t.ReplaceRegion(mtl.Region{
-			Origin: mtl.Origin{X: a.X - minX, Y: a.Y - minY, Z: 0},
+			Origin: mtl.Origin{X: a.Region.Min.X - region.Min.X, Y: a.Region.Min.Y - region.Min.Y, Z: 0},
-			Size:   mtl.Size{Width: a.Width, Height: a.Height, Depth: 1},
+			Size:   mtl.Size{Width: a.Region.Dx(), Height: a.Region.Dy(), Depth: 1},
-		}, 0, unsafe.Pointer(&a.Pixels[0]), 4*a.Width)
+		}, 0, unsafe.Pointer(&a.Pixels[0]), 4*a.Region.Dx())
 	}
 
 	if g.cb == (mtl.CommandBuffer{}) {
@@ -884,9 +869,9 @@ func (i *Image) WritePixels(args []*graphicsdriver.WritePixelsArgs) error {
 	}
 	bce := g.cb.MakeBlitCommandEncoder()
 	for _, a := range args {
-		so := mtl.Origin{X: a.X - minX, Y: a.Y - minY, Z: 0}
+		so := mtl.Origin{X: a.Region.Min.X - region.Min.X, Y: a.Region.Min.Y - region.Min.Y, Z: 0}
-		ss := mtl.Size{Width: a.Width, Height: a.Height, Depth: 1}
+		ss := mtl.Size{Width: a.Region.Dx(), Height: a.Region.Dy(), Depth: 1}
-		do := mtl.Origin{X: a.X, Y: a.Y, Z: 0}
+		do := mtl.Origin{X: a.Region.Min.X, Y: a.Region.Min.Y, Z: 0}
 		bce.CopyFromTexture(t, 0, 0, so, ss, i.texture, 0, 0, do)
 	}
 	bce.EndEncoding()

internal/graphicsdriver/opengl/context.go

@@ -17,6 +17,7 @@ package opengl
 import (
 	"errors"
 	"fmt"
+	"image"
 	"sync"
 
 	"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
@@ -242,14 +243,18 @@ func (c *context) newTexture(width, height int) (textureNative, error) {
 	return textureNative(t), nil
 }
 
-func (c *context) framebufferPixels(buf []byte, f *framebuffer, x, y, width, height int) error {
+func (c *context) framebufferPixels(buf []byte, f *framebuffer, region image.Rectangle) error {
-	if got, want := len(buf), 4*width*height; got != want {
+	if got, want := len(buf), 4*region.Dx()*region.Dy(); got != want {
 		return fmt.Errorf("opengl: len(buf) must be %d but was %d at framebufferPixels", got, want)
 	}
 
 	c.ctx.Flush()
 	c.bindFramebuffer(f.native)
-	c.ctx.ReadPixels(buf, int32(x), int32(y), int32(width), int32(height), gl.RGBA, gl.UNSIGNED_BYTE)
+	x := int32(region.Min.X)
+	y := int32(region.Min.Y)
+	width := int32(region.Dx())
+	height := int32(region.Dy())
+	c.ctx.ReadPixels(buf, x, y, width, height, gl.RGBA, gl.UNSIGNED_BYTE)
 	return nil
 }
 

internal/graphicsdriver/opengl/image.go

@@ -16,6 +16,7 @@ package opengl
 
 import (
 	"errors"
+	"image"
 
 	"github.com/hajimehoshi/ebiten/v2/internal/graphics"
 	"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
@@ -71,11 +72,11 @@ func (i *Image) setViewport() error {
 	return nil
 }
 
-func (i *Image) ReadPixels(buf []byte, x, y, width, height int) error {
+func (i *Image) ReadPixels(buf []byte, region image.Rectangle) error {
 	if err := i.ensureFramebuffer(); err != nil {
 		return err
 	}
-	if err := i.graphics.context.framebufferPixels(buf, i.framebuffer, x, y, width, height); err != nil {
+	if err := i.graphics.context.framebufferPixels(buf, i.framebuffer, region); err != nil {
 		return err
 	}
 	return nil
@@ -147,7 +148,11 @@ func (i *Image) WritePixels(args []*graphicsdriver.WritePixelsArgs) error {
 
 	i.graphics.context.bindTexture(i.texture)
 	for _, a := range args {
-		i.graphics.context.ctx.TexSubImage2D(gl.TEXTURE_2D, 0, int32(a.X), int32(a.Y), int32(a.Width), int32(a.Height), gl.RGBA, gl.UNSIGNED_BYTE, a.Pixels)
+		x := int32(a.Region.Min.X)
+		y := int32(a.Region.Min.Y)
+		width := int32(a.Region.Dx())
+		height := int32(a.Region.Dy())
+		i.graphics.context.ctx.TexSubImage2D(gl.TEXTURE_2D, 0, x, y, width, height, gl.RGBA, gl.UNSIGNED_BYTE, a.Pixels)
 	}
 
 	return nil

internal/restorable/image.go

@@ -282,12 +282,12 @@ func (i *Image) WritePixels(pixels []byte, region image.Rectangle) {
 	theImages.makeStaleIfDependingOn(i)
 
 	if pixels != nil {
-		i.image.WritePixels(pixels, region.Min.X, region.Min.Y, region.Dx(), region.Dy())
+		i.image.WritePixels(pixels, region)
 	} else {
 		// TODO: When pixels == nil, we don't have to care the pixel state there. In such cases, the image
 		// accepts only WritePixels and not Fill or DrawTriangles.
 		// TODO: Separate Image struct into two: images for WritePixels-only, and the others.
-		i.image.WritePixels(make([]byte, 4*region.Dx()*region.Dy()), region.Min.X, region.Min.Y, region.Dx(), region.Dy())
+		i.image.WritePixels(make([]byte, 4*region.Dx()*region.Dy()), region)
 	}
 
 	// Even if the image is already stale, call makeStale to extend the stale region.
@@ -429,7 +429,7 @@ func (i *Image) readPixelsFromGPUIfNeeded(graphicsDriver graphicsdriver.Graphics
 
 func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, pixels []byte, region image.Rectangle) error {
 	if AlwaysReadPixelsFromGPU() {
-		if err := i.image.ReadPixels(graphicsDriver, pixels, region.Min.X, region.Min.Y, region.Dx(), region.Dy()); err != nil {
+		if err := i.image.ReadPixels(graphicsDriver, pixels, region); err != nil {
 			return err
 		}
 		return nil
@@ -494,7 +494,7 @@ func (i *Image) readPixelsFromGPU(graphicsDriver graphicsdriver.Graphics) error
 			pix = make([]byte, 4*r.Dx()*r.Dy())
 			i.pixelsCache[r] = pix
 		}
-		if err := i.image.ReadPixels(graphicsDriver, pix, r.Min.X, r.Min.Y, r.Dx(), r.Dy()); err != nil {
+		if err := i.image.ReadPixels(graphicsDriver, pix, r); err != nil {
 			return err
 		}
 		i.basePixels.AddOrReplace(pix, r)
@@ -633,7 +633,7 @@ func (i *Image) restore(graphicsDriver graphicsdriver.Graphics) error {
 				pix = make([]byte, 4*r.Dx()*r.Dy())
 				i.pixelsCache[r] = pix
 			}
-			if err := gimg.ReadPixels(graphicsDriver, pix, r.Min.X, r.Min.Y, r.Dx(), r.Dy()); err != nil {
+			if err := gimg.ReadPixels(graphicsDriver, pix, r); err != nil {
 				return err
 			}
 			i.basePixels.AddOrReplace(pix, r)

internal/restorable/pixelrecords.go

@@ -122,7 +122,7 @@ func (pr *pixelsRecords) readPixels(pixels []byte, region image.Rectangle, image
 func (pr *pixelsRecords) apply(img *graphicscommand.Image) {
 	// TODO: Isn't this too heavy? Can we merge the operations?
 	for _, r := range pr.records {
-		img.WritePixels(r.pix, r.rect.Min.X, r.rect.Min.Y, r.rect.Dx(), r.rect.Dy())
+		img.WritePixels(r.pix, r.rect)
 	}
 }