diff --git a/graphics/opengl/context.go b/graphics/opengl/context.go
index 711c5bac2..021ca54b7 100644
--- a/graphics/opengl/context.go
+++ b/graphics/opengl/context.go
@@ -9,9 +9,10 @@ import (
 	"fmt"
 	"github.com/hajimehoshi/go-ebiten/graphics"
 	"github.com/hajimehoshi/go-ebiten/graphics/matrix"
-	"github.com/hajimehoshi/go-ebiten/graphics/opengl/texture"
+	"github.com/hajimehoshi/go-ebiten/graphics/opengl/rendertarget"
 	"github.com/hajimehoshi/go-ebiten/graphics/opengl/shader"
-	"github.com/hajimehoshi/go-ebiten/graphics/rendertarget"
+	"github.com/hajimehoshi/go-ebiten/graphics/opengl/texture"
+	grendertarget "github.com/hajimehoshi/go-ebiten/graphics/rendertarget"
 	gtexture "github.com/hajimehoshi/go-ebiten/graphics/texture"
 	"image"
 	"math"
@@ -23,9 +24,9 @@ type Context struct {
 	screenHeight           int
 	screenScale            int
 	textures               map[graphics.TextureId]*gtexture.Texture
-	renderTargets          map[graphics.RenderTargetId]*rendertarget.RenderTarget
+	renderTargets          map[graphics.RenderTargetId]*grendertarget.RenderTarget
 	renderTargetToTexture  map[graphics.RenderTargetId]graphics.TextureId
-	mainFramebufferTexture *rendertarget.RenderTarget
+	mainFramebufferTexture *grendertarget.RenderTarget
 	projectionMatrix       [16]float32
 }
 
@@ -35,7 +36,7 @@ func newContext(screenWidth, screenHeight, screenScale int) *Context {
 		screenHeight:          screenHeight,
 		screenScale:           screenScale,
 		textures:              map[graphics.TextureId]*gtexture.Texture{},
-		renderTargets:         map[graphics.RenderTargetId]*rendertarget.RenderTarget{},
+		renderTargets:         map[graphics.RenderTargetId]*grendertarget.RenderTarget{},
 		renderTargetToTexture: map[graphics.RenderTargetId]graphics.TextureId{},
 	}
 	return context
@@ -48,10 +49,10 @@ func (context *Context) Init() {
 	C.glGetIntegerv(C.GL_FRAMEBUFFER_BINDING, &mainFramebuffer)
 
 	var err error
-	context.mainFramebufferTexture, err = texture.NewRenderTargetWithFramebuffer(
+	context.mainFramebufferTexture, err = rendertarget.NewRenderTargetWithFramebuffer(
 		context.screenWidth*context.screenScale,
 		context.screenHeight*context.screenScale,
-		texture.Framebuffer(mainFramebuffer))
+		rendertarget.Framebuffer(mainFramebuffer))
 	if err != nil {
 		panic("creating main framebuffer failed: " + err.Error())
 	}
@@ -123,10 +124,10 @@ func (context *Context) SetOffscreen(renderTargetId graphics.RenderTargetId) {
 	context.setOffscreen(renderTarget)
 }
 
-func (context *Context) setOffscreen(renderTarget *rendertarget.RenderTarget) {
+func (context *Context) setOffscreen(renderTarget *grendertarget.RenderTarget) {
 	C.glFlush()
 
-	framebuffer := C.GLuint(renderTarget.Framebuffer().(texture.Framebuffer))
+	framebuffer := C.GLuint(renderTarget.Framebuffer().(rendertarget.Framebuffer))
 	C.glBindFramebuffer(C.GL_FRAMEBUFFER, framebuffer)
 	err := C.glCheckFramebufferStatus(C.GL_FRAMEBUFFER)
 	if err != C.GL_FRAMEBUFFER_COMPLETE {
@@ -179,7 +180,7 @@ func (context *Context) flush() {
 
 func (context *Context) NewRenderTarget(width, height int) (
 	graphics.RenderTargetId, error) {
-	renderTarget, err := texture.NewRenderTarget(width, height)
+	renderTarget, err := rendertarget.NewRenderTarget(width, height)
 	if err != nil {
 		return 0, nil
 	}
diff --git a/graphics/opengl/rendertarget/render_target.go b/graphics/opengl/rendertarget/render_target.go
new file mode 100644
index 000000000..3b129f17e
--- /dev/null
+++ b/graphics/opengl/rendertarget/render_target.go
@@ -0,0 +1,47 @@
+package rendertarget
+
+// #cgo LDFLAGS: -framework OpenGL
+//
+// #include <OpenGL/gl.h>
+import "C"
+import (
+	"github.com/hajimehoshi/go-ebiten/graphics/opengl/texture"
+	"github.com/hajimehoshi/go-ebiten/graphics/rendertarget"
+)
+
+type Framebuffer C.GLuint
+
+func createFramebuffer(nativeTexture C.GLuint) C.GLuint {
+	framebuffer := C.GLuint(0)
+	C.glGenFramebuffers(1, &framebuffer)
+
+	origFramebuffer := C.GLint(0)
+	C.glGetIntegerv(C.GL_FRAMEBUFFER_BINDING, &origFramebuffer)
+	C.glBindFramebuffer(C.GL_FRAMEBUFFER, framebuffer)
+	C.glFramebufferTexture2D(C.GL_FRAMEBUFFER, C.GL_COLOR_ATTACHMENT0,
+		C.GL_TEXTURE_2D, nativeTexture, 0)
+	C.glBindFramebuffer(C.GL_FRAMEBUFFER, C.GLuint(origFramebuffer))
+	if C.glCheckFramebufferStatus(C.GL_FRAMEBUFFER) !=
+		C.GL_FRAMEBUFFER_COMPLETE {
+		panic("creating framebuffer failed")
+	}
+
+	return framebuffer
+}
+
+func NewRenderTarget(width, height int) (*rendertarget.RenderTarget, error) {
+	tex, err := texture.New(width, height)
+	if err != nil {
+		return nil, err
+	}
+	framebuffer := createFramebuffer(C.GLuint(tex.Native().(texture.Native)))
+	return rendertarget.NewWithFramebuffer(tex, Framebuffer(framebuffer)), nil
+}
+
+func NewRenderTargetWithFramebuffer(width, height int, framebuffer Framebuffer) (*rendertarget.RenderTarget, error) {
+	tex, err := texture.New(width, height)
+	if err != nil {
+		return nil, err
+	}
+	return rendertarget.NewWithFramebuffer(tex, framebuffer), nil
+}
diff --git a/graphics/opengl/shader/program.go b/graphics/opengl/shader/program.go
index 229c581aa..0e6450abc 100644
--- a/graphics/opengl/shader/program.go
+++ b/graphics/opengl/shader/program.go
@@ -80,7 +80,7 @@ func getLocation(program C.GLuint, name string, qualifierVariableType int) C.GLi
 	defer C.free(unsafe.Pointer(locationName))
 
 	location := C.GLint(-1)
-	
+
 	switch qualifierVariableType {
 	case qualifierVariableTypeAttribute:
 		location = C.glGetAttribLocation(program, (*C.GLchar)(locationName))
@@ -111,7 +111,7 @@ func use(projectionMatrix [16]float32, geometryMatrix matrix.Geometry, colorMatr
 		program = programColorMatrix
 	}
 	C.glUseProgram(program)
-	
+
 	C.glUniformMatrix4fv(C.GLint(getUniformLocation(program, "projection_matrix")),
 		1, C.GL_FALSE, (*C.GLfloat)(&projectionMatrix[0]))
 
diff --git a/graphics/opengl/texture/texture.go b/graphics/opengl/texture/texture.go
index 573e8a610..6e5f67324 100644
--- a/graphics/opengl/texture/texture.go
+++ b/graphics/opengl/texture/texture.go
@@ -5,7 +5,6 @@ package texture
 // #include <OpenGL/gl.h>
 import "C"
 import (
-	"github.com/hajimehoshi/go-ebiten/graphics/rendertarget"
 	gtexture "github.com/hajimehoshi/go-ebiten/graphics/texture"
 	"image"
 	"unsafe"
@@ -47,41 +46,8 @@ func createFromImage(img *image.NRGBA) (interface{}, error) {
 	return createNativeTexture(size.X, size.Y, img.Pix), nil
 }
 
-type Framebuffer C.GLuint
-
-func NewRenderTarget(width, height int) (*rendertarget.RenderTarget, error) {
-	texture, err := gtexture.New(width, height, create)
-	if err != nil {
-		return nil, err
-	}
-	framebuffer := createFramebuffer(C.GLuint(texture.Native().(Native)))
-	return rendertarget.NewWithFramebuffer(texture, Framebuffer(framebuffer)), nil
-}
-
-func NewRenderTargetWithFramebuffer(width, height int, framebuffer Framebuffer) (*rendertarget.RenderTarget, error) {
-	texture, err := gtexture.New(width, height, create)
-	if err != nil {
-		return nil, err
-	}
-	return rendertarget.NewWithFramebuffer(texture, framebuffer), nil
-}
-
-func createFramebuffer(nativeTexture C.GLuint) C.GLuint {
-	framebuffer := C.GLuint(0)
-	C.glGenFramebuffers(1, &framebuffer)
-
-	origFramebuffer := C.GLint(0)
-	C.glGetIntegerv(C.GL_FRAMEBUFFER_BINDING, &origFramebuffer)
-	C.glBindFramebuffer(C.GL_FRAMEBUFFER, framebuffer)
-	C.glFramebufferTexture2D(C.GL_FRAMEBUFFER, C.GL_COLOR_ATTACHMENT0,
-		C.GL_TEXTURE_2D, nativeTexture, 0)
-	C.glBindFramebuffer(C.GL_FRAMEBUFFER, C.GLuint(origFramebuffer))
-	if C.glCheckFramebufferStatus(C.GL_FRAMEBUFFER) !=
-		C.GL_FRAMEBUFFER_COMPLETE {
-		panic("creating framebuffer failed")
-	}
-
-	return framebuffer
+func New(width, height int) (*gtexture.Texture, error) {
+	return gtexture.New(width, height, create)
 }
 
 func NewFromImage(img image.Image) (*gtexture.Texture, error) {