3Dのレンダーステート

ブレンドステート

ブレンドステートは Forward Rendering のみ有効です。 ```cpp # include

void Main() { Graphics::SetBackground(Color(80, 160, 230));

const Texture textureGrass(L"Example/Grass.jpg", TextureDesc::For3D);

Graphics3D::SetAmbientLightForward(ColorF(0.4, 0.4, 0.4));

Graphics3D::SetBlendStateForward(BlendState::Additive);

while (System::Update())
{
	Graphics3D::FreeCamera();

	Plane(40).draw(textureGrass);

	for (int32 i = 0; i < 12; ++i)
	{
		const Vec2 v = Circular(8, Radians(i * 30));

		Cylinder(Vec3(v.x, 2, v.y), 1, 4).drawForward(HSV(i * 30));
	}
}

}

## ラスタライザーステート
<img src="https://github.com/Siv3D/Reference-JP/blob/master/resource/tutorial/Graphics3D/rasterizer.png?raw=true" width="640" height="480">  
```cpp
# include <Siv3D.hpp>

void Main()
{
	Graphics::SetBackground(Color(80, 160, 230));

	const Texture textureGrass(L"Example/Grass.jpg", TextureDesc::For3D);

	GUI gui(GUIStyle::Default);
	gui.add(L"method", GUIRadioButton::Create(
	{ L"SolidCullBack (Default3D)", L"SolidCullFront", L"SolidCullNone",
		L"WireframeCullBack", L"WireframeCullFront", L"WireframeCullNone" }, 0u));

	while (System::Update())
	{
		Graphics3D::FreeCamera();

		switch (gui.radioButton(L"method").checkedItem.value())
		{
		case 0:
			Graphics3D::SetRasterizerState(RasterizerState::SolidCullBack);
			break;
		case 1:
			Graphics3D::SetRasterizerState(RasterizerState::SolidCullFront);
			break;
		case 2:
			Graphics3D::SetRasterizerState(RasterizerState::SolidCullNone);
			break;
		case 3:
			Graphics3D::SetRasterizerState(RasterizerState::WireframeCullBack);
			break;
		case 4:
			Graphics3D::SetRasterizerState(RasterizerState::WireframeCullFront);
			break;
		case 5:
			Graphics3D::SetRasterizerState(RasterizerState::WireframeCullNone);
			break;
		}

		Plane(40).draw(textureGrass);

		for (int32 i = 0; i < 12; ++i)
		{
			const Vec2 v = Circular(8, Radians(i * 30));

			Cylinder(Vec3(v.x, 2, v.y), 1, 4).draw(HSV(i * 30));
		}
	}
}

デプスステート

```cpp # include

void Main() { Graphics::SetBackground(Color(80, 160, 230));

const Texture textureGrass(L"Example/Grass.jpg", TextureDesc::For3D);

GUI gui(GUIStyle::Default);
gui.add(L"method", GUIRadioButton::Create(
{ L"TestWrite (Default3D)", L"TestOnly", L"None" }, 0u));

while (System::Update())
{
	Graphics3D::FreeCamera();

	switch (gui.radioButton(L"method").checkedItem.value())
	{
	case 0:
		Graphics3D::SetDepthStateForward(DepthState::Default3D);
		break;
	case 1:
		Graphics3D::SetDepthStateForward(DepthState::TestOnly);
		break;
	case 2:
		Graphics3D::SetDepthStateForward(DepthState::None);
		break;
	}

	Plane(40).draw(textureGrass);

	Sphere(Vec3(0, 2, 0), 2).draw();

	for (int32 i = 0; i < 12; ++i)
	{
		const Vec2 v = Circular(8, Radians(i * 30));

		Cylinder(Vec3(v.x, 2, v.y), 1, 4).drawForward(HSV(i * 30).toColorF(0.5));
	}
}

}

## サンプラーステート
<img src="https://github.com/Siv3D/Reference-JP/blob/master/resource/tutorial/Graphics3D/sampler.png?raw=true" width="640" height="480">  
3D 描画のデフォルトは `WrapAniso` です。
```cpp
# include <Siv3D.hpp>

void Main()
{
	Graphics::SetBackground(Color(80, 160, 230));

	const Texture textureGrass(L"Example/Grass.jpg", TextureDesc::For3D);

	GUI gui(GUIStyle::Default);
	gui.add(L"method", GUIRadioButton::Create(
	{ L"Point", L"Linear", L"Aniso (Default3D)" }, 2u));

	while (System::Update())
	{
		Graphics3D::FreeCamera();

		Plane(40).draw(textureGrass);

		switch (gui.radioButton(L"method").checkedItem.value())
		{
		case 0:
			Graphics3D::SetSamplerState(SamplerState::WrapPoint);
			break;
		case 1:
			Graphics3D::SetSamplerState(SamplerState::WrapLinear);
			break;
		case 2:
			Graphics3D::SetSamplerState(SamplerState::WrapAniso);
			break;
		}
	}
}

シザー矩形

```cpp # include

void Main() { Graphics::SetBackground(Color(80, 160, 230));

const Texture textureGrass(L"Example/Grass.jpg", TextureDesc::For3D);

RasterizerState rasterizer = RasterizerState::Default3D;
rasterizer.scissorEnable = true;

Graphics3D::SetRasterizerState(rasterizer);
Graphics3D::SetScissorRect(Rect(100, 100, 300, 200));

while (System::Update())
{
	Graphics3D::FreeCamera();

	Plane(40).draw(textureGrass);

	for (int32 i = 0; i < 12; ++i)
	{
		const Vec2 v = Circular(8, Radians(i * 30));

		Cylinder(Vec3(v.x, 2, v.y), 1, 4).draw(HSV(i * 30));
	}
}

}

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