diff --git a/internal/graphicsdriver/directx/graphics11_windows.go b/internal/graphicsdriver/directx/graphics11_windows.go
index 807009046..53035b2f6 100644
--- a/internal/graphicsdriver/directx/graphics11_windows.go
+++ b/internal/graphicsdriver/directx/graphics11_windows.go
@@ -24,7 +24,6 @@ import (
 	"github.com/hajimehoshi/ebiten/v2/internal/graphics"
 	"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
 	"github.com/hajimehoshi/ebiten/v2/internal/shaderir"
-	"github.com/hajimehoshi/ebiten/v2/internal/shaderir/hlsl"
 )
 
 var inputElementDescsForDX11 = []_D3D11_INPUT_ELEMENT_DESC{
@@ -482,8 +481,7 @@ func (g *graphics11) MaxImageSize() int {
 }
 
 func (g *graphics11) NewShader(program *shaderir.Program) (graphicsdriver.Shader, error) {
-	vs, ps, offsets := hlsl.Compile(program)
-	vsh, psh, err := compileShader(vs, ps)
+	vsh, psh, offsets, err := compileShader(program)
 	if err != nil {
 		return nil, err
 	}
diff --git a/internal/graphicsdriver/directx/graphics12_windows.go b/internal/graphicsdriver/directx/graphics12_windows.go
index 69740b90e..dae2f9c7f 100644
--- a/internal/graphicsdriver/directx/graphics12_windows.go
+++ b/internal/graphicsdriver/directx/graphics12_windows.go
@@ -25,7 +25,6 @@ import (
 	"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
 	"github.com/hajimehoshi/ebiten/v2/internal/microsoftgdk"
 	"github.com/hajimehoshi/ebiten/v2/internal/shaderir"
-	"github.com/hajimehoshi/ebiten/v2/internal/shaderir/hlsl"
 )
 
 type resourceWithSize struct {
@@ -1064,8 +1063,7 @@ func (g *graphics12) MaxImageSize() int {
 }
 
 func (g *graphics12) NewShader(program *shaderir.Program) (graphicsdriver.Shader, error) {
-	vs, ps, offsets := hlsl.Compile(program)
-	vsh, psh, err := compileShader(vs, ps)
+	vsh, psh, offsets, err := compileShader(program)
 	if err != nil {
 		return nil, err
 	}
diff --git a/internal/graphicsdriver/directx/shader_windows.go b/internal/graphicsdriver/directx/shader_windows.go
index 3c3b7509a..cd197e28e 100644
--- a/internal/graphicsdriver/directx/shader_windows.go
+++ b/internal/graphicsdriver/directx/shader_windows.go
@@ -21,11 +21,13 @@ import (
 
 	"github.com/hajimehoshi/ebiten/v2/internal/graphics"
 	"github.com/hajimehoshi/ebiten/v2/internal/shaderir"
+	"github.com/hajimehoshi/ebiten/v2/internal/shaderir/hlsl"
 )
 
 var vertexShaderCache = map[string]*_ID3DBlob{}
 
-func compileShader(vs, ps string) (vsh, psh *_ID3DBlob, ferr error) {
+func compileShader(program *shaderir.Program) (vsh, psh *_ID3DBlob, uniformOffsets []int, ferr error) {
+	vs, ps, offsets := hlsl.Compile(program)
 	var flag uint32 = uint32(_D3DCOMPILE_OPTIMIZATION_LEVEL3)
 
 	defer func() {
@@ -74,10 +76,10 @@ func compileShader(vs, ps string) (vsh, psh *_ID3DBlob, ferr error) {
 	})
 
 	if err := wg.Wait(); err != nil {
-		return nil, nil, err
+		return nil, nil, nil, err
 	}
 
-	return
+	return vsh, psh, offsets, nil
 }
 
 func constantBufferSize(uniformTypes []shaderir.Type, uniformOffsets []int) int {