diff --git a/CMakeLists.txt b/CMakeLists.txt
index fb94baf..30ac9c5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,6 +51,7 @@ add_library(agl OBJECT
   include/shader_text/aglShaderTextSyntaxTree.h
 
   include/utility/aglAtomicPtrArray.h
+  include/utility/aglDevTools.h
   include/utility/aglParameter.h
   include/utility/aglParameterCurve.hpp
   include/utility/aglParameterIO.h
diff --git a/include/utility/aglDevTools.h b/include/utility/aglDevTools.h
new file mode 100644
index 0000000..8c20d4a
--- /dev/null
+++ b/include/utility/aglDevTools.h
@@ -0,0 +1,166 @@
+#pragma once
+
+#include <gfx/seadColor.h>
+#include <hostio/seadHostIOReflexible.h>
+#include <math/seadBoundBox.h>
+#include <math/seadMatrix.h>
+#include <math/seadVector.h>
+
+namespace sead {
+class Camera;
+class Controller;
+class LookAtCamera;
+class Projection;
+class Viewport;
+}  // namespace sead
+
+namespace agl {
+
+class CubeMapFace;
+class DrawContext;
+class RenderBuffer;
+class ShaderProgram;
+class TextureData;
+class TextureSampler;
+
+namespace utl {
+
+// FIXME replace this with the proper include
+class ImageFilter2D {
+public:
+    enum Channel {};
+};
+
+namespace DevTools {
+enum CameraControlType {};
+class PoiningControlBuffer;
+
+void setMeterScale(float scale);
+float getMeterScale();
+float calcScale(float factor);
+float calcMeter(float factor);
+sead::SafeString getStringMinMax(float min, float max);
+void setFrameSpeed(float frame_speed);
+float getFrameSpeed();
+void setCameraOperationSpeed(float speed);
+float getCameraOperationSpeed();
+void genMessage(sead::hostio::Context* context);
+void drawCamera(DrawContext*, const sead::Camera&, const sead::Matrix34f&, const sead::Matrix44f&,
+                bool, const sead::Color4f&, float);
+void drawCamera(DrawContext*, const sead::Matrix34f&, const sead::Vector3f&, const sead::Matrix34f&,
+                const sead::Matrix44f&, bool, const sead::Color4f&, float);
+void drawCamera_(DrawContext*, const sead::Matrix34f&, const sead::Vector3f&,
+                 const sead::Matrix34f&, const sead::Matrix44f&, bool, const sead::Color4f&, float);
+void drawFrustum(DrawContext*, const sead::Camera&, const sead::Projection&, const sead::Matrix34f&,
+                 const sead::Matrix44f&, bool, const sead::Color4f&);
+void drawFrustum_(DrawContext*, const sead::Matrix34f&, const sead::Matrix44f&,
+                  const sead::Matrix34f&, const sead::Matrix44f&, bool, const sead::Color4f&);
+void drawFrustum(DrawContext*, const sead::Matrix34f&, const sead::Projection&,
+                 const sead::Matrix34f&, const sead::Matrix44f&, bool, const sead::Color4f&);
+void drawCameraAndFrustum(DrawContext*, const sead::Camera&, const sead::Projection&,
+                          const sead::Matrix34f&, const sead::Matrix44f&, bool,
+                          const sead::Color4f&, const sead::Color4f&, float);
+void beginDrawImm(DrawContext*, const sead::Matrix34f&, const sead::Matrix44f&);
+void drawLineImm(DrawContext*, const sead::Vector3f&, const sead::Vector3f&, const sead::Color4f&,
+                 float);
+void setUniformToDevToolsShader_(DrawContext*, const sead::Matrix34f&, const sead::Matrix34f&,
+                                 const sead::Matrix44f&, const sead::Color4f&, const sead::Color4f&,
+                                 const sead::Vector3f&);
+void drawAxisImm(DrawContext*, const sead::Matrix34f&, float, float, float);
+void drawDirectionalLight(DrawContext*, const sead::Vector3f&, const sead::Color4f&,
+                          const sead::Color4f&, const sead::Color4f&, const sead::Matrix34f&,
+                          const sead::Matrix44f&, float, bool);
+void drawPou32Light(DrawContext*, const sead::Vector3f&, float, const sead::Color4f&,
+                    const sead::Matrix34f&, const sead::Matrix44f&);
+void drawSpotLight(DrawContext*, const sead::Vector3f&, const sead::Vector3f&, const sead::Color4f&,
+                   float, float, const sead::Matrix34f&, const sead::Matrix44f&);
+void drawProjLight(DrawContext*, const sead::Vector3f&, const sead::Vector3f&,
+                   const sead::Vector3f&, const sead::Color4f&, float, float, float, float, float,
+                   float, const sead::Vector3f&, bool, const sead::Matrix34f&,
+                   const sead::Matrix44f&);
+void drawCapsule(DrawContext*, const sead::Vector3f&, const sead::Vector3f&, float,
+                 const sead::Color4f&, const sead::Matrix34f&, const sead::Matrix44f&, bool);
+void drawArrow(DrawContext*, const sead::Vector3f&, const sead::Vector3f&, const sead::Color4f&,
+               const sead::Color4f&, float, const sead::Matrix34f&, const sead::Matrix44f&);
+void drawCursor(DrawContext*, const sead::Vector2f&, const sead::Vector2f&, float);
+void drawTexture(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                 const sead::Matrix44f&, const sead::Color4f&);
+void drawDepthGradation(DrawContext*, const RenderBuffer&, u32, const float*, const sead::Color4f*,
+                        float, float);
+void controlCamera(sead::LookAtCamera*, const sead::Controller&, float, CameraControlType);
+void controlCamera(sead::LookAtCamera*, const sead::Vector2f&, const sead::Vector2f&, float, float,
+                   float, bool, CameraControlType);
+void controlCameraPou32er(sead::LookAtCamera*, PoiningControlBuffer*, const sead::Viewport&);
+void controlCameraPou32er(sead::LookAtCamera*, PoiningControlBuffer*, float, float);
+void controlCameraPou32er(sead::LookAtCamera*, PoiningControlBuffer*, bool, bool, bool, bool,
+                          const sead::Vector2f&, bool, float, float);
+void controlCameraPou32er(sead::LookAtCamera*, const sead::Vector2f&, float, float, float);
+void drawFrameBuffer(DrawContext*, const RenderBuffer&, const sead::Viewport&,
+                     ImageFilter2D::Channel);
+void drawVisualizedDepth(DrawContext*, const TextureData&, s32, const sead::Matrix34f&,
+                         const sead::Matrix44f&, const sead::Matrix34f&, const sead::Matrix44f&);
+void drawVisualizedDepth(DrawContext*, const TextureData&, s32, const sead::Matrix44f&,
+                         const sead::Matrix34f&, const sead::Matrix44f&);
+void drawColorQuad(DrawContext*, const sead::Color4f&, const sead::Matrix34f&,
+                   const sead::Matrix44f&);
+void drawColorQuadTopBottom(DrawContext*, const sead::Color4f&, const sead::Color4f&,
+                            const sead::Matrix34f&, const sead::Matrix44f&);
+void drawTexture_(DrawContext*, const ShaderProgram&, const TextureSampler&, const sead::Matrix34f&,
+                  const sead::Matrix44f&, const sead::Color4f&);
+void drawTextureChannel(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                        const sead::Matrix44f&, ImageFilter2D::Channel);
+void drawTextureGamma(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                      const sead::Matrix44f&, float);
+void drawTextureMipLevel(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                         const sead::Matrix44f&, float);
+void drawTexture2DArray(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                        const sead::Matrix44f&, s32, float, const sead::Color4f&);
+void drawTexture3D(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                   const sead::Matrix44f&, float, float);
+void drawTextureCubeMap(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                        const sead::Matrix44f&, CubeMapFace, float);
+void drawTextureCubeArray(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                          const sead::Matrix44f&, s32, CubeMapFace, float);
+void drawTextureTexCoord(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                         const sead::Matrix44f&, const sead::Vector2f&, float,
+                         const sead::Vector2f&);
+void drawTextureTexCoordMultColor(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                                  const sead::Matrix44f&, const sead::Vector2f&, float,
+                                  const sead::Vector2f&, const sead::Color4f&);
+void drawTextureMSAA(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                     const sead::Matrix44f&);
+void drawNV12Decord(DrawContext*, const TextureSampler&, const TextureSampler&,
+                    const sead::Matrix34f&, const sead::Matrix44f&);
+void drawTextureColorMatrix(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                            const sead::Matrix44f&, const sead::Matrix44f&, const sead::Vector4f&,
+                            float);
+void drawTexture_(DrawContext*, const ShaderProgram&, const TextureSampler&, const sead::Matrix34f&,
+                  const sead::Matrix44f&, const sead::Matrix44f&, const sead::Vector4f&);
+void drawTexture2DArrayColorMatrix(DrawContext*, const TextureSampler&, const sead::Matrix34f&,
+                                   const sead::Matrix44f&, const sead::Matrix44f&,
+                                   const sead::Vector4f&, s32, float);
+void drawPou32Imm(DrawContext*, const sead::Vector3f&, const sead::Color4f&, float);
+void drawTriangleImm(DrawContext*, const sead::Vector3f&, const sead::Vector3f&,
+                     const sead::Vector3f&, const sead::Color4f&);
+void drawWireTriangleImm(DrawContext*, const sead::Vector3f&, const sead::Vector3f&,
+                         const sead::Vector3f&, const sead::Color4f&, float);
+void drawGridImm(DrawContext*, float, float, u32, u32, const sead::Color4f&, float);
+void drawWireCircleImm(DrawContext*, const sead::Matrix34f&, const sead::Color4f&, float, u32);
+void drawBoundBoxImm(DrawContext*, const sead::BoundBox3f&, const sead::Color4f&, float);
+void drawFan(DrawContext*, const sead::Matrix34f&, const sead::Matrix44f&, const sead::Color4f&,
+             float, float, u32, float);
+void drawFan_(DrawContext*, u32*, const sead::Matrix34f&, const sead::Matrix44f&,
+              const sead::Color4f&, float, float, u32, float);
+void drawWireFan(DrawContext*, const sead::Matrix34f&, const sead::Matrix44f&, const sead::Color4f&,
+                 float, float, u32, float);
+void setStickReverse(bool reverse);
+bool isStickReverse();
+void setRotateLRReverse(bool reverse);
+bool isRotateLRReverse();
+void setRotateUDReverse(bool reverse);
+bool isRotateUDReverse();
+}  // namespace DevTools
+
+}  // namespace utl
+
+}  // namespace agl