Nanashi-soft○プログラマ専用○DirectX11開発○

◇DirectX11プログラミング -四角ポリゴンを立ててみる-

	const int TYOUTEN = 4;	//ポリゴンの頂点数

	Vertex3D hVectorData[TYOUTEN] = {
		//500x811
		{ { -0.27f, +0.75f, +0.5f }, { 1.0f, 1.0f, 1.0f, 1.0f }, {0.0f, 0.0f} },
		{ { +0.27f, +0.75f, +0.5f }, { 1.0f, 1.0f, 1.0f, 1.0f }, {1.0f, 0.0f} },
		{ { -0.27f, -0.75f, +0.5f }, { 1.0f, 1.0f, 1.0f, 1.0f }, {0.0f, 1.0f} },
		{ { +0.27f, -0.75f, +0.5f }, { 1.0f, 1.0f, 1.0f, 1.0f }, {1.0f, 1.0f} }
	};

#include <xnamath.h>

	//ワールド変換用行列を生成
	XMMATRIX hWorld;		//ワールド変換行列
	//初期化
	hWorld = XMMatrixIdentity();

	XMMATRIX hView;		//ビュー変換行列
	XMVECTOR hEye = XMVectorSet(0.0f, 0.0f, -2.0f, 0.0f);	//カメラの位置
	XMVECTOR hAt = XMVectorSet(0.0f, 0.0f, 0.0f, 0.0f);		//焦点の位置
	XMVECTOR hUp = XMVectorSet(0.0f, 1.0f, 0.0f, 0.0f);
	hView = XMMatrixLookAtLH(hEye, hAt, hUp);

#define D3DX_PI ((FLOAT) 3.141592654f) 
#define D3DXToRadian( degree ) ((degree) * (D3DX_PI / 180.0f))
#define D3DXToDegree( radian ) ((radian) * (180.0f / D3DX_PI))

	XMMATRIX hProjection;	//透視射影変換行列
	hProjection = XMMatrixPerspectiveFovLH(D3DXToRadian(45.0f), 16.0f/9.0f, 0.0f, 1000.0f);

//入力用
struct vertexIn
{
	float4 pos : POSITION0;
	float4 col : COLOR0;
	float2 tex : TEXCOORD0;
};

//出力用
struct vertexOut
{
	float4 pos : SV_POSITION;
	float4 col : COLOR;
	float2 tex : TEXCOORD0;
};

//変換用行列
cbuffer ConstantBuffer : register( b0 )
{
	matrix World;		//ワールド変換行列
	matrix View;		//ビュー変換行列
	matrix Projection;	//透視射影変換行列
}

vertexOut vs_main(vertexIn IN)
{
	vertexOut OUT;

	OUT.pos = mul(IN.pos, World);		//ワールド変換
	OUT.pos = mul(OUT.pos, View);		//ビュー変換
	OUT.pos = mul(OUT.pos, Projection);	//透視射影変換
	OUT.col = IN.col;
	OUT.tex = IN.tex;

	return OUT;
}

	//それらをシェーダーに送る
	struct ConstantBuffer
	{
		XMMATRIX mWorld;		//ワールド変換行列
		XMMATRIX mView;			//ビュー変換行列
		XMMATRIX mProjection;	//透視射影変換行列
	};

	//constantバッファ生成
	ID3D11Buffer* hpConstantBuffer = NULL;
	hBufferDesc.ByteWidth = sizeof(ConstantBuffer);
	hBufferDesc.Usage = D3D11_USAGE_DEFAULT;
	hBufferDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
	hBufferDesc.CPUAccessFlags = 0;
	hBufferDesc.MiscFlags = 0;
	hBufferDesc.StructureByteStride = sizeof(float);
	if(FAILED(hpDevice->CreateBuffer(&hBufferDesc, NULL, &hpConstantBuffer))){
		MessageBoxW(hWnd, L"Create ConstantBuffer", L"Err", MB_ICONSTOP);
		goto End;
	}

	ConstantBuffer hConstantBuffer;
	hConstantBuffer.mWorld = XMMatrixTranspose(hWorld);
	hConstantBuffer.mView = XMMatrixTranspose(hView);
	hConstantBuffer.mProjection = XMMatrixTranspose(hProjection);
	hpDeviceContext->UpdateSubresource(hpConstantBuffer, 0, NULL, &hConstantBuffer, 0, 0);

	//コンテキストに設定
	hpDeviceContext->VSSetConstantBuffers(0, 1, &hpConstantBuffer);

	XMMATRIX hRotate;
	hRotate = XMMatrixRotationZ(D3DXToRadian(-45.0f));
	hWorld = XMMatrixMultiply(hWorld, hRotate);

	hRotate = XMMatrixRotationY(D3DXToRadian(-45.0f));
	hWorld = XMMatrixMultiply(hWorld, hRotate);

	hEye = XMVectorSet(0.0f, 0.0f, -5.0f, 0.0f);
	hView = XMMatrixLookAtLH(hEye, hAt, hUp);
	hProjection = XMMatrixPerspectiveFovLH(D3DXToRadian(45.0f), 16.0f/9.0f, 0.0f, 1000.0f);