[DirectX12] 15) SkyBox

Cube 또는 Sphere로 Skybox 표현

 

Skybox Shader

#ifndef _SKYBOX_FX_
#define _SKYBOX_FX_

#include "params.fx"

struct VS_IN
{
    float3 localPos : POSITION;
    float2 uv : TEXCOORD;
};

struct VS_OUT
{
    float4 pos : SV_Position;
    float2 uv : TEXCOORD;
};

VS_OUT VS_Main(VS_IN input)
{
    VS_OUT output = (VS_OUT)0;

    // Translation은 하지 않고 Rotation만 적용한다
    float4 viewPos = mul(float4(input.localPos, 0), g_matView);
    float4 clipSpacePos = mul(viewPos, g_matProjection);

    // w/w=1이기 때문에 항상 깊이가 1로 유지된다
    output.pos = clipSpacePos.xyww;
    output.uv = input.uv;

    return output;
}

float4 PS_Main(VS_OUT input) : SV_Target
{
     float4 color = g_tex_0.Sample(g_sam_0, input.uv);
     return color;
}

#endif

---

Resource.cpp

	// Skybox
	{
		ShaderInfo info =
		{
			SHADER_TYPE::FORWARD,
			RASTERIZER_TYPE::CULL_NONE,
			DEPTH_STENCIL_TYPE::LESS_EQUAL
		};

		shared_ptr<Shader> shader = make_shared<Shader>();
		shader->CreateGraphicsShader(L"..\\Resources\\Shader\\skybox.fx", info);
		Add<Shader>(L"Skybox", shader);
	}

---

SceneManager.cpp

	{
	shared_ptr<GameObject> skybox = make_shared<GameObject>();
	skybox->AddComponent(make_shared<Transform>());
	skybox->SetCheckFrustum(false);
	shared_ptr<MeshRenderer> meshRenderer = make_shared<MeshRenderer>();
	{
		shared_ptr<Mesh> sphereMesh = GET_SINGLE(Resources)->LoadSphereMesh();
		meshRenderer->SetMesh(sphereMesh);
	}
	{
		shared_ptr<Shader> shader = GET_SINGLE(Resources)->Get<Shader>(L"Skybox");
		shared_ptr<Texture> texture = GET_SINGLE(Resources)->Load<Texture>(L"skybox", L"..\\Resources\\Texture\\skybox.jpg");
		shared_ptr<Material> material = make_shared<Material>();
		material->SetShader(shader);
		material->SetTexture(0, texture);
		meshRenderer->SetMaterial(material);
	}
	skybox->AddComponent(meshRenderer);
	scene->AddGameObject(skybox);
	}