～プログラミング～ DirectX 11で平行光源ライティングのソースコードです。
CD3DTest.h
#define SAFE_RELEASE(p) { if( NULL != p ) { p->Release(); p = NULL; } }
class CD3DTest {
public:
ID3D11Device* m_pDevice;
ID3D11DeviceContext* m_pImmediateContext;
IDXGISwapChain* m_pSwapChain;
ID3D11Texture2D* m_pDepthStencilTexture;
ID3D11RenderTargetView* m_pRenderTargetView;
ID3D11DepthStencilView* m_pDepthStencilView;
ID3D11Buffer* m_pVertexBuffer;
ID3D11Buffer* m_pIndexBuffer;
ID3D11Buffer* m_pConstantBuffer;
ID3D11InputLayout* m_pInputLayout;
ID3D11VertexShader* m_pVertexShader;
ID3D11PixelShader* m_pPixelShader;
D3D11_VIEWPORT m_Viewport;
public:
CD3DTest();
virtual ~CD3DTest();
virtual HRESULT Create( HWND hwnd );
virtual void Release();
virtual void Render();
};
CD3DTest.cpp
#include "stdafx.h"
struct Vertex {
float pos[ 3 ];
float nor[ 3 ];
};
Vertex g_VertexList[] {
{ { -0.5f, 0.5f, -0.5f }, { 0.0f, 0.0f, -1.0f } },
{ { 0.5f, 0.5f, -0.5f }, { 0.0f, 0.0f, -1.0f } },
{ { -0.5f, -0.5f, -0.5f }, { 0.0f, 0.0f, -1.0f } },
{ { 0.5f, -0.5f, -0.5f }, { 0.0f, 0.0f, -1.0f } },
{ { -0.5f, 0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f } },
{ { -0.5f, -0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f } },
{ { 0.5f, 0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f } },
{ { 0.5f, -0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f } },
{ { -0.5f, 0.5f, 0.5f }, { -1.0f, 0.0f, 0.0f } },
{ { -0.5f, 0.5f, -0.5f }, { -1.0f, 0.0f, 0.0f } },
{ { -0.5f, -0.5f, 0.5f }, { -1.0f, 0.0f, 0.0f } },
{ { -0.5f, -0.5f, -0.5f }, { -1.0f, 0.0f, 0.0f } },
{ { 0.5f, 0.5f, 0.5f }, { 1.0f, 0.0f, 0.0f } },
{ { 0.5f, -0.5f, 0.5f }, { 1.0f, 0.0f, 0.0f } },
{ { 0.5f, 0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f } },
{ { 0.5f, -0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f } },
{ { -0.5f, 0.5f, 0.5f }, { 0.0f, 1.0f, 0.0f } },
{ { 0.5f, 0.5f, 0.5f }, { 0.0f, 1.0f, 0.0f } },
{ { -0.5f, 0.5f, -0.5f }, { 0.0f, 1.0f, 0.0f } },
{ { 0.5f, 0.5f, -0.5f }, { 0.0f, 1.0f, 0.0f } },
{ { -0.5f, -0.5f, 0.5f }, { 0.0f, -1.0f, 0.0f } },
{ { -0.5f, -0.5f, -0.5f }, { 0.0f, -1.0f, 0.0f } },
{ { 0.5f, -0.5f, 0.5f }, { 0.0f, -1.0f, 0.0f } },
{ { 0.5f, -0.5f, -0.5f }, { 0.0f, -1.0f, 0.0f } },
};
WORD g_IndexList[] {
0, 1, 2, 3, 2, 1,
4, 5, 6, 7, 6, 5,
8, 9, 10, 11, 10, 9,
12, 13, 14, 15, 14, 13,
16, 17, 18, 19, 18, 17,
20, 21, 22, 23, 22, 21,
};
D3D11_INPUT_ELEMENT_DESC g_VertexDesc[] {
{ "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "NORMAL", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0 },
};
struct ConstantBuffer {
XMFLOAT4X4 world;
XMFLOAT4X4 view;
XMFLOAT4X4 projection;
XMFLOAT4 light;
};
CD3DTest::CD3DTest()
{
m_pDevice = NULL;
m_pImmediateContext = NULL;
m_pSwapChain = NULL;
m_pDepthStencilTexture = NULL;
m_pRenderTargetView = NULL;
m_pDepthStencilView = NULL;
m_pVertexBuffer = NULL;
m_pIndexBuffer = NULL;
m_pConstantBuffer = NULL;
m_pInputLayout = NULL;
m_pVertexShader = NULL;
m_pPixelShader = NULL;
}
CD3DTest::~CD3DTest()
{
Release();
}
HRESULT CD3DTest::Create( HWND hwnd )
{
Release();
HRESULT hr;
CRect rect;
DXGI_SWAP_CHAIN_DESC scDesc;
::GetClientRect( hwnd, &rect );
::ZeroMemory( &scDesc, sizeof( scDesc ) );
scDesc.BufferCount = 1;
scDesc.BufferDesc.Width = rect.Width();
scDesc.BufferDesc.Height = rect.Height();
scDesc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
scDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
scDesc.OutputWindow = hwnd;
scDesc.SampleDesc.Count = 1;
scDesc.SampleDesc.Quality = 0;
scDesc.Windowed = TRUE;
UINT flags = 0;
#ifdef _DEBUG
flags |= D3D11_CREATE_DEVICE_DEBUG;
#endif
D3D_FEATURE_LEVEL pLevels[] = { D3D_FEATURE_LEVEL_11_0 };
D3D_FEATURE_LEVEL level;
hr = D3D11CreateDeviceAndSwapChain( NULL,
D3D_DRIVER_TYPE_HARDWARE,
NULL,
flags,
pLevels,
1,
D3D11_SDK_VERSION,
&scDesc,
&m_pSwapChain,
&m_pDevice,
&level,
&m_pImmediateContext );
if ( FAILED( hr ) )
return hr;
ID3D11Texture2D* pBackBuffer;
hr = m_pSwapChain->GetBuffer( 0, __uuidof( ID3D11Texture2D ), (LPVOID*)&pBackBuffer );
if ( FAILED( hr ) )
return hr;
hr = m_pDevice->CreateRenderTargetView( pBackBuffer, NULL, &m_pRenderTargetView );
pBackBuffer->Release();
if ( FAILED( hr ) )
return hr;
//深度ステンシルバッファ作成
D3D11_TEXTURE2D_DESC txDesc;
ZeroMemory( &txDesc, sizeof( txDesc ) );
txDesc.Width = rect.Width();
txDesc.Height = rect.Height();
txDesc.MipLevels = 1;
txDesc.ArraySize = 1;
txDesc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;
txDesc.SampleDesc.Count = 1;
txDesc.SampleDesc.Quality = 0;
txDesc.Usage = D3D11_USAGE_DEFAULT;
txDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL;
txDesc.CPUAccessFlags = 0;
txDesc.MiscFlags = 0;
hr = m_pDevice->CreateTexture2D( &txDesc, NULL, &m_pDepthStencilTexture );
if ( FAILED( hr ) )
return hr;
D3D11_DEPTH_STENCIL_VIEW_DESC dsDesc;
ZeroMemory( &dsDesc, sizeof( dsDesc ) );
dsDesc.Format = txDesc.Format;
dsDesc.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D;
dsDesc.Texture2D.MipSlice = 0;
hr = m_pDevice->CreateDepthStencilView( m_pDepthStencilTexture, &dsDesc, &m_pDepthStencilView );
if ( FAILED( hr ) )
return hr;
//頂点バッファ作成
D3D11_BUFFER_DESC vbDesc;
vbDesc.ByteWidth = sizeof( Vertex ) * 24;
vbDesc.Usage = D3D11_USAGE_DEFAULT;
vbDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
vbDesc.CPUAccessFlags = 0;
vbDesc.MiscFlags = 0;
vbDesc.StructureByteStride = 0;
D3D11_SUBRESOURCE_DATA vrData;
vrData.pSysMem = g_VertexList;
vrData.SysMemPitch = 0;
vrData.SysMemSlicePitch = 0;
hr = m_pDevice->CreateBuffer( &vbDesc, &vrData, &m_pVertexBuffer );
if ( FAILED( hr ) )
return hr;
//インデックスバッファ作成
D3D11_BUFFER_DESC ibDesc;
ibDesc.ByteWidth = sizeof( WORD ) * 6 * 6;
ibDesc.Usage = D3D11_USAGE_DEFAULT;
ibDesc.BindFlags = D3D11_BIND_INDEX_BUFFER;
ibDesc.CPUAccessFlags = 0;
ibDesc.MiscFlags = 0;
ibDesc.StructureByteStride = 0;
D3D11_SUBRESOURCE_DATA irData;
irData.pSysMem = g_IndexList;
irData.SysMemPitch = 0;
irData.SysMemSlicePitch = 0;
hr = m_pDevice->CreateBuffer( &ibDesc, &irData, &m_pIndexBuffer );
if ( FAILED( hr ) )
return hr;
//定数バッファ作成
D3D11_BUFFER_DESC cbDesc;
cbDesc.ByteWidth = sizeof( ConstantBuffer );
cbDesc.Usage = D3D11_USAGE_DEFAULT;
cbDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
cbDesc.CPUAccessFlags = 0;
cbDesc.MiscFlags = 0;
cbDesc.StructureByteStride = 0;
hr = m_pDevice->CreateBuffer( &cbDesc, NULL, &m_pConstantBuffer );
if ( FAILED( hr ) )
return hr;
//頂点レイアウト作成
hr = m_pDevice->CreateInputLayout( g_VertexDesc, ARRAYSIZE( g_VertexDesc ),
g_vs_main, sizeof( g_vs_main ), &m_pInputLayout );
if ( FAILED( hr ) )
return hr;
//頂点シェーダー生成
hr = m_pDevice->CreateVertexShader( &g_vs_main, sizeof( g_vs_main ), NULL, &m_pVertexShader );
if ( FAILED( hr ) )
return hr;
//ピクセルシェーダー生成
hr = m_pDevice->CreatePixelShader( &g_ps_main, sizeof( g_ps_main ), NULL, &m_pPixelShader );
if ( FAILED( hr ) )
return hr;
//ビューポート設定
m_Viewport.TopLeftX = 0;
m_Viewport.TopLeftY = 0;
m_Viewport.Width = (FLOAT)rect.Width();
m_Viewport.Height = (FLOAT)rect.Height();
m_Viewport.MinDepth = 0.0f;
m_Viewport.MaxDepth = 1.0f;
return hr;
}
void CD3DTest::Release()
{
if( m_pImmediateContext ) {
m_pImmediateContext->ClearState();
}
SAFE_RELEASE( m_pVertexBuffer );
SAFE_RELEASE( m_pIndexBuffer );
SAFE_RELEASE( m_pConstantBuffer );
SAFE_RELEASE( m_pInputLayout );
SAFE_RELEASE( m_pVertexShader );
SAFE_RELEASE( m_pPixelShader );
SAFE_RELEASE( m_pRenderTargetView );
SAFE_RELEASE( m_pDepthStencilView );
SAFE_RELEASE( m_pDepthStencilTexture );
SAFE_RELEASE( m_pSwapChain );
SAFE_RELEASE( m_pImmediateContext );
SAFE_RELEASE( m_pDevice );
}
void CD3DTest::Render()
{
XMMATRIX worldMatrix = XMMatrixTranslation( 0.0f, 0.0f, 0.0f );
XMVECTOR eye = XMVectorSet( 2.0f, 2.0f, -2.0f, 0.0f );
XMVECTOR focus = XMVectorSet( 0.0f, 0.0f, 0.0f, 0.0f );
XMVECTOR up = XMVectorSet( 0.0f, 1.0f, 0.0f, 0.0f );
XMMATRIX viewMatrix = XMMatrixLookAtLH( eye, focus, up );
float fov = XMConvertToRadians( 45.0f );
float aspect = m_Viewport.Width / m_Viewport.Height;
float nearZ = 0.1f;
float farZ = 100.0f;
XMMATRIX projMatrix = XMMatrixPerspectiveFovLH( fov, aspect, nearZ, farZ );
XMVECTOR light = XMVector3Normalize( XMVectorSet( 0.0f, 0.5f, -1.0f, 0.0f ) );
ConstantBuffer cb;
XMStoreFloat4x4( &cb.world, XMMatrixTranspose( worldMatrix ) );
XMStoreFloat4x4( &cb.view, XMMatrixTranspose( viewMatrix ) );
XMStoreFloat4x4( &cb.projection, XMMatrixTranspose( projMatrix ) );
XMStoreFloat4( &cb.light, light );
m_pImmediateContext->UpdateSubresource( m_pConstantBuffer, 0, NULL, &cb, 0, 0 );
float clearColor[ 4 ] = { 0.0f, 0.0f, 0.0f, 1.0f }; //red,green,blue,alpha
UINT strides = sizeof( Vertex );
UINT offsets = 0;
m_pImmediateContext->IASetInputLayout( m_pInputLayout );
m_pImmediateContext->IASetVertexBuffers( 0, 1, &m_pVertexBuffer, &strides, &offsets );
m_pImmediateContext->IASetIndexBuffer( m_pIndexBuffer, DXGI_FORMAT_R16_UINT, 0 );
m_pImmediateContext->IASetPrimitiveTopology( D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST );
m_pImmediateContext->VSSetConstantBuffers( 0, 1, &m_pConstantBuffer );
m_pImmediateContext->VSSetShader( m_pVertexShader, NULL, 0 );
m_pImmediateContext->RSSetViewports( 1, &m_Viewport );
m_pImmediateContext->PSSetShader( m_pPixelShader, NULL, 0 );
m_pImmediateContext->OMSetRenderTargets( 1, &m_pRenderTargetView, m_pDepthStencilView );
m_pImmediateContext->ClearRenderTargetView( m_pRenderTargetView, clearColor );
m_pImmediateContext->ClearDepthStencilView( m_pDepthStencilView,
D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL, 1.0f, 0 );
m_pImmediateContext->DrawIndexed( 36, 0, 0 );
m_pSwapChain->Present( 0, 0 );
}
vs_test.vsh
struct VS_IN
{
float4 pos : POSITION0;
float4 nor : NORMAL0;
};
struct VS_OUT
{
float4 pos : SV_POSITION;
float4 col : COLOR0;
};
cbuffer ConstantBuffer
{
float4x4 World; //ワールド変換行列
float4x4 View; //ビュー変換行列
float4x4 Projection; //透視射影変換行列
float4 Light;
}
VS_OUT vs_main( VS_IN input )
{
VS_OUT output;
float3 nor;
float col;
output.pos = mul(input.pos, World);
output.pos = mul(output.pos, View);
output.pos = mul(output.pos, Projection);
nor = mul(input.nor, World).xyz;
nor = normalize(nor);
col = saturate(dot(nor, (float3)Light));
col = col * 0.5f + 0.5f;
output.col = float4(col, col, col, 1.0f);
return output;
}
ps_test.psh
struct PS_IN
{
float4 pos : SV_POSITION;
float4 col : COLOR0;
};
float4 ps_main( PS_IN input ) : SV_Target
{
return input.col;
}
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