From 9bfbbb6e9e360f66215ecf2ee64af620cb6e2931 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Fri, 25 Mar 2022 19:43:32 +0900
Subject: [PATCH] internal/ui: add graphicsDriverGetter.getDirectX()

Updates #1007
---
 internal/ui/graphics.go        | 6 ++++++
 internal/ui/ui_android.go      | 4 ++++
 internal/ui/ui_cbackend.go     | 4 ++++
 internal/ui/ui_glfw_darwin.go  | 4 ++++
 internal/ui/ui_glfw_unix.go    | 4 ++++
 internal/ui/ui_glfw_windows.go | 4 ++++
 internal/ui/ui_ios.go          | 4 ++++
 internal/ui/ui_js.go           | 4 ++++
 8 files changed, 34 insertions(+)

diff --git a/internal/ui/graphics.go b/internal/ui/graphics.go
index 2ea50dddb..839f52b6a 100644
--- a/internal/ui/graphics.go
+++ b/internal/ui/graphics.go
@@ -24,6 +24,7 @@ import (
 type graphicsDriverGetter interface {
 	getAuto() graphicsdriver.Graphics
 	getOpenGL() graphicsdriver.Graphics
+	getDirectX() graphicsdriver.Graphics
 	getMetal() graphicsdriver.Graphics
 }
 
@@ -41,6 +42,11 @@ func chooseGraphicsDriver(getter graphicsDriverGetter) (graphicsdriver.Graphics,
 			return g, nil
 		}
 		return nil, fmt.Errorf("ui: %s=%s is specified but OpenGL is not available", envName, env)
+	case "directx":
+		if g := getter.getDirectX(); g != nil {
+			return g, nil
+		}
+		return nil, fmt.Errorf("ui: %s=%s is specified but DirectX is not available.", envName, env)
 	case "metal":
 		if g := getter.getMetal(); g != nil {
 			return g, nil
diff --git a/internal/ui/ui_android.go b/internal/ui/ui_android.go
index 88ef6264e..f855474c4 100644
--- a/internal/ui/ui_android.go
+++ b/internal/ui/ui_android.go
@@ -34,6 +34,10 @@ func (*graphicsDriverGetterImpl) getOpenGL() graphicsdriver.Graphics {
 	return nil
 }
 
+func (*graphicsDriverGetterImpl) getDirectX() graphicsdriver.Graphics {
+	return nil
+}
+
 func (*graphicsDriverGetterImpl) getMetal() graphicsdriver.Graphics {
 	return nil
 }
diff --git a/internal/ui/ui_cbackend.go b/internal/ui/ui_cbackend.go
index af7eefa3f..8dbe3c784 100644
--- a/internal/ui/ui_cbackend.go
+++ b/internal/ui/ui_cbackend.go
@@ -38,6 +38,10 @@ func (*graphicsDriverGetterImpl) getOpenGL() graphicsdriver.Graphics {
 	return nil
 }
 
+func (*graphicsDriverGetterImpl) getDirectX() graphicsdriver.Graphics {
+	return nil
+}
+
 func (*graphicsDriverGetterImpl) getMetal() graphicsdriver.Graphics {
 	return nil
 }
diff --git a/internal/ui/ui_glfw_darwin.go b/internal/ui/ui_glfw_darwin.go
index 18f4b322b..11e40bbc5 100644
--- a/internal/ui/ui_glfw_darwin.go
+++ b/internal/ui/ui_glfw_darwin.go
@@ -248,6 +248,10 @@ func (*graphicsDriverGetterImpl) getOpenGL() graphicsdriver.Graphics {
 	return nil
 }
 
+func (*graphicsDriverGetterImpl) getDirectX() graphicsdriver.Graphics {
+	return nil
+}
+
 func (*graphicsDriverGetterImpl) getMetal() graphicsdriver.Graphics {
 	if m := metal.Get(); m != nil {
 		return m
diff --git a/internal/ui/ui_glfw_unix.go b/internal/ui/ui_glfw_unix.go
index 701b18b97..ba915f010 100644
--- a/internal/ui/ui_glfw_unix.go
+++ b/internal/ui/ui_glfw_unix.go
@@ -44,6 +44,10 @@ func (*graphicsDriverGetterImpl) getOpenGL() graphicsdriver.Graphics {
 	return nil
 }
 
+func (*graphicsDriverGetterImpl) getDirectX() graphicsdriver.Graphics {
+	return nil
+}
+
 func (*graphicsDriverGetterImpl) getMetal() graphicsdriver.Graphics {
 	return nil
 }
diff --git a/internal/ui/ui_glfw_windows.go b/internal/ui/ui_glfw_windows.go
index 5e71d871d..8d0743e94 100644
--- a/internal/ui/ui_glfw_windows.go
+++ b/internal/ui/ui_glfw_windows.go
@@ -42,6 +42,10 @@ func (*graphicsDriverGetterImpl) getOpenGL() graphicsdriver.Graphics {
 	return nil
 }
 
+func (*graphicsDriverGetterImpl) getDirectX() graphicsdriver.Graphics {
+	return nil
+}
+
 func (*graphicsDriverGetterImpl) getMetal() graphicsdriver.Graphics {
 	return nil
 }
diff --git a/internal/ui/ui_ios.go b/internal/ui/ui_ios.go
index c0a4c9eed..adf1d560e 100644
--- a/internal/ui/ui_ios.go
+++ b/internal/ui/ui_ios.go
@@ -41,6 +41,10 @@ func (*graphicsDriverGetterImpl) getOpenGL() graphicsdriver.Graphics {
 	return nil
 }
 
+func (*graphicsDriverGetterImpl) getDirectX() graphicsdriver.Graphics {
+	return nil
+}
+
 func (g *graphicsDriverGetterImpl) getMetal() graphicsdriver.Graphics {
 	// When gomobile-build is used, GL functions must be called via
 	// gl.Context so that they are called on the appropriate thread.
diff --git a/internal/ui/ui_js.go b/internal/ui/ui_js.go
index 01a700c6b..33d0734c7 100644
--- a/internal/ui/ui_js.go
+++ b/internal/ui/ui_js.go
@@ -38,6 +38,10 @@ func (*graphicsDriverGetterImpl) getOpenGL() graphicsdriver.Graphics {
 	return nil
 }
 
+func (*graphicsDriverGetterImpl) getDirectX() graphicsdriver.Graphics {
+	return nil
+}
+
 func (*graphicsDriverGetterImpl) getMetal() graphicsdriver.Graphics {
 	return nil
 }