lighting
This commit is contained in:
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8833c106a8
commit
96e0a3ab7b
147
main.cpp
147
main.cpp
@ -12,7 +12,8 @@ ID3D10Texture2D * g_pDepthStencil = NULL;
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ID3D10RenderTargetView * g_pRenderTargetView = NULL;
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ID3D10DepthStencilView * g_pDepthStencilView = NULL;
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ID3D10Effect * g_pEffect = NULL;
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ID3D10EffectTechnique * g_pTechnique = NULL;
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ID3D10EffectTechnique * g_pTechniqueRender = NULL;
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ID3D10EffectTechnique * g_pTechniqueRenderLight = NULL;
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ID3D10InputLayout * g_pVertexLayout = NULL;
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ID3D10Buffer * g_pVertexBuffer = NULL;
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ID3D10Buffer * g_pIndexBuffer = NULL;
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@ -20,6 +21,9 @@ ID3D10Buffer * g_pIndexBuffer = NULL;
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ID3D10EffectMatrixVariable * g_pWorldVariable = NULL;
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ID3D10EffectMatrixVariable * g_pViewVariable = NULL;
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ID3D10EffectMatrixVariable * g_pProjectionVariable = NULL;
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ID3D10EffectVectorVariable * g_pLightDirVariable = NULL;
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ID3D10EffectVectorVariable * g_pLightColorVariable = NULL;
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ID3D10EffectVectorVariable * g_pOutputColorVariable = NULL;
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D3DXMATRIX g_World1;
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D3DXMATRIX g_World2;
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D3DXMATRIX g_View;
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@ -32,7 +36,7 @@ void Render();
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struct SimpleVertex {
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D3DXVECTOR3 Pos;
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D3DXVECTOR4 Color;
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D3DXVECTOR3 Normal;
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};
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void print(LPCSTR fmt, ...)
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@ -265,23 +269,27 @@ HRESULT InitDirect3DDevice()
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return hr;
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}
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g_pTechnique = g_pEffect->GetTechniqueByName("Render");
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g_pTechniqueRender = g_pEffect->GetTechniqueByName("Render");
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g_pTechniqueRenderLight = g_pEffect->GetTechniqueByName("RenderLight");
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// variables
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g_pWorldVariable = g_pEffect->GetVariableByName("World")->AsMatrix();
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g_pViewVariable = g_pEffect->GetVariableByName("View")->AsMatrix();
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g_pProjectionVariable = g_pEffect->GetVariableByName("Projection")->AsMatrix();
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g_pLightDirVariable = g_pEffect->GetVariableByName("vLightDir")->AsVector();
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g_pLightColorVariable = g_pEffect->GetVariableByName("vLightColor")->AsVector();
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g_pOutputColorVariable = g_pEffect->GetVariableByName("vOutputColor")->AsVector();
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// input layout
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D3D10_INPUT_ELEMENT_DESC layout[] = {
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{"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0 , D3D10_INPUT_PER_VERTEX_DATA, 0},
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{"COLOR" , 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D10_INPUT_PER_VERTEX_DATA, 0},
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{"NORMAL" , 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 12, D3D10_INPUT_PER_VERTEX_DATA, 0},
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};
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UINT numElements = (sizeof (layout)) / (sizeof (layout[0]));
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D3D10_PASS_DESC passDesc;
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g_pTechnique->GetPassByIndex(0)->GetDesc(&passDesc);
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g_pTechniqueRender->GetPassByIndex(0)->GetDesc(&passDesc);
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print("pass desc: `%s`\n", passDesc.Name);
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hr = g_pd3dDevice->CreateInputLayout(layout, numElements,
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@ -301,17 +309,39 @@ HRESULT InitDirect3DDevice()
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// vertex buffer
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SimpleVertex vertices[] = {
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{ D3DXVECTOR3(-1.0f, 1.0f, -1.0f), D3DXVECTOR4(0.0f, 0.0f, 1.0f, 1.0f) },
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{ D3DXVECTOR3( 1.0f, 1.0f, -1.0f), D3DXVECTOR4(0.0f, 1.0f, 0.0f, 1.0f) },
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{ D3DXVECTOR3( 1.0f, 1.0f, 1.0f), D3DXVECTOR4(0.0f, 1.0f, 1.0f, 1.0f) },
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{ D3DXVECTOR3(-1.0f, 1.0f, 1.0f), D3DXVECTOR4(1.0f, 0.0f, 0.0f, 1.0f) },
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{ D3DXVECTOR3(-1.0f, -1.0f, -1.0f), D3DXVECTOR4(1.0f, 0.0f, 1.0f, 1.0f) },
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{ D3DXVECTOR3( 1.0f, -1.0f, -1.0f), D3DXVECTOR4(1.0f, 1.0f, 0.0f, 1.0f) },
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{ D3DXVECTOR3( 1.0f, -1.0f, 1.0f), D3DXVECTOR4(1.0f, 1.0f, 1.0f, 1.0f) },
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{ D3DXVECTOR3(-1.0f, -1.0f, 1.0f), D3DXVECTOR4(0.0f, 0.0f, 0.0f, 1.0f) },
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{ D3DXVECTOR3(-1.0f, 1.0f, -1.0f), D3DXVECTOR3( 0.0f, 1.0f, 0.0f) },
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{ D3DXVECTOR3( 1.0f, 1.0f, -1.0f), D3DXVECTOR3( 0.0f, 1.0f, 0.0f) },
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{ D3DXVECTOR3( 1.0f, 1.0f, 1.0f), D3DXVECTOR3( 0.0f, 1.0f, 0.0f) },
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{ D3DXVECTOR3(-1.0f, 1.0f, 1.0f), D3DXVECTOR3( 0.0f, 1.0f, 0.0f) },
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{ D3DXVECTOR3(-1.0f, -1.0f, -1.0f), D3DXVECTOR3( 0.0f, -1.0f, 0.0f) },
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{ D3DXVECTOR3( 1.0f, -1.0f, -1.0f), D3DXVECTOR3( 0.0f, -1.0f, 0.0f) },
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{ D3DXVECTOR3( 1.0f, -1.0f, 1.0f), D3DXVECTOR3( 0.0f, -1.0f, 0.0f) },
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{ D3DXVECTOR3(-1.0f, -1.0f, 1.0f), D3DXVECTOR3( 0.0f, -1.0f, 0.0f) },
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{ D3DXVECTOR3(-1.0f, -1.0f, 1.0f), D3DXVECTOR3(-1.0f, 0.0f, 0.0f) },
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{ D3DXVECTOR3(-1.0f, -1.0f, -1.0f), D3DXVECTOR3(-1.0f, 0.0f, 0.0f) },
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{ D3DXVECTOR3(-1.0f, 1.0f, -1.0f), D3DXVECTOR3(-1.0f, 0.0f, 0.0f) },
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{ D3DXVECTOR3(-1.0f, 1.0f, 1.0f), D3DXVECTOR3(-1.0f, 0.0f, 0.0f) },
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{ D3DXVECTOR3( 1.0f, -1.0f, 1.0f), D3DXVECTOR3( 1.0f, 0.0f, 0.0f) },
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{ D3DXVECTOR3( 1.0f, -1.0f, -1.0f), D3DXVECTOR3( 1.0f, 0.0f, 0.0f) },
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{ D3DXVECTOR3( 1.0f, 1.0f, -1.0f), D3DXVECTOR3( 1.0f, 0.0f, 0.0f) },
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{ D3DXVECTOR3( 1.0f, 1.0f, 1.0f), D3DXVECTOR3( 1.0f, 0.0f, 0.0f) },
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{ D3DXVECTOR3(-1.0f, -1.0f, -1.0f), D3DXVECTOR3( 0.0f, 0.0f, -1.0f) },
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{ D3DXVECTOR3( 1.0f, -1.0f, -1.0f), D3DXVECTOR3( 0.0f, 0.0f, -1.0f) },
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{ D3DXVECTOR3( 1.0f, 1.0f, -1.0f), D3DXVECTOR3( 0.0f, 0.0f, -1.0f) },
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{ D3DXVECTOR3(-1.0f, 1.0f, -1.0f), D3DXVECTOR3( 0.0f, 0.0f, -1.0f) },
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{ D3DXVECTOR3(-1.0f, -1.0f, 1.0f), D3DXVECTOR3( 0.0f, 0.0f, 1.0f) },
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{ D3DXVECTOR3( 1.0f, -1.0f, 1.0f), D3DXVECTOR3( 0.0f, 0.0f, 1.0f) },
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{ D3DXVECTOR3( 1.0f, 1.0f, 1.0f), D3DXVECTOR3( 0.0f, 0.0f, 1.0f) },
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{ D3DXVECTOR3(-1.0f, 1.0f, 1.0f), D3DXVECTOR3( 0.0f, 0.0f, 1.0f) },
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};
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int vertices_length = (sizeof (vertices)) / (sizeof (vertices[0]));
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bd.Usage = D3D10_USAGE_DEFAULT;
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bd.ByteWidth = (sizeof (SimpleVertex)) * 8;
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bd.ByteWidth = (sizeof (SimpleVertex)) * vertices_length;
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bd.BindFlags = D3D10_BIND_VERTEX_BUFFER;
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bd.CPUAccessFlags = 0;
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bd.MiscFlags = 0;
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@ -330,23 +360,24 @@ HRESULT InitDirect3DDevice()
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3,1,0,
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2,1,3,
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0,5,4,
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1,5,0,
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3,4,7,
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0,4,3,
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1,6,5,
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2,6,1,
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2,7,6,
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3,7,2,
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6,4,5,
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7,4,6,
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11,9,8,
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10,9,11,
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14,12,13,
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15,12,14,
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19,17,16,
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18,17,19,
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22,20,21,
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23,20,22
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};
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int indices_length = (sizeof (indices)) / (sizeof (indices[0]));
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bd.Usage = D3D10_USAGE_DEFAULT;
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bd.ByteWidth = (sizeof (DWORD)) * 36;
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bd.ByteWidth = (sizeof (DWORD)) * indices_length;
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bd.BindFlags = D3D10_BIND_INDEX_BUFFER;
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bd.CPUAccessFlags = 0;
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bd.MiscFlags = 0;
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@ -384,7 +415,7 @@ HRESULT InitDirect3DDevice()
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void Render()
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{
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static float t = 0.0f;
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if (0) {
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if (1) {
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t += (float)D3DX_PI * 0.0125f;
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} else {
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static DWORD dwTimeStart = 0;
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@ -397,44 +428,66 @@ void Render()
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// first cube
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D3DXMatrixRotationY(&g_World1, t);
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// second cube
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D3DXMATRIX mTranslate;
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D3DXMATRIX mOrbit;
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D3DXMATRIX mSpin;
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D3DXMATRIX mScale;
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D3DXMatrixRotationZ(&mSpin, -t);
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D3DXMatrixRotationY(&mOrbit, -t * 2.0f);
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D3DXMatrixTranslation(&mTranslate, -4.0f, 0.0f, 0.0f);
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D3DXMatrixScaling(&mScale, 0.3f, 0.3f, 0.3f);
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// lights
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D3DXVECTOR4 vLightDirs[2] = {
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D3DXVECTOR4(-0.577f, 0.577f, -0.577f, 1.0f),
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D3DXVECTOR4(0.0f, 0.0f, -1.0f, 1.0f),
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};
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D3DXVECTOR4 vLightColors[2] = {
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D3DXVECTOR4(0.0f, 0.5f, 0.5f, 1.0f),
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D3DXVECTOR4(0.5f, 0.0f, 0.0f, 1.0f)
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};
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D3DXMatrixMultiply(&g_World2, &mScale, &mSpin);
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D3DXMatrixMultiply(&g_World2, &g_World2, &mTranslate);
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D3DXMatrixMultiply(&g_World2, &g_World2, &mOrbit);
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// rotate the second light around the origin
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D3DXMATRIX mRotate;
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D3DXVECTOR4 vOutDir;
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D3DXMatrixRotationY(&mRotate, -2.0f * t);
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D3DXVec3Transform(&vLightDirs[1], (D3DXVECTOR3 *)&vLightDirs[1], &mRotate);
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D3DXMatrixRotationY(&mRotate, 0.4f * t);
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D3DXVec3Transform(&vLightDirs[0], (D3DXVECTOR3 *)&vLightDirs[0], &mRotate);
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// clear
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float ClearColor[4] = { 0.0f, 0.125f, 0.6f, 1.0f };
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g_pd3dDevice->ClearRenderTargetView(g_pRenderTargetView, ClearColor);
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g_pd3dDevice->ClearDepthStencilView(g_pDepthStencilView, D3D10_CLEAR_DEPTH, 1.0f, 0);
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// matrices
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g_pViewVariable->SetMatrix((float *)&g_View);
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g_pProjectionVariable->SetMatrix((float *)&g_Projection);
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g_pWorldVariable->SetMatrix((float *)&g_World1);
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D3D10_TECHNIQUE_DESC techDesc;
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g_pTechnique->GetDesc(&techDesc);
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// lights
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g_pLightDirVariable->SetFloatVectorArray((float *)vLightDirs, 0, 2);
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g_pLightColorVariable->SetFloatVectorArray((float *)vLightColors, 0, 2);
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// render first cube
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g_pWorldVariable->SetMatrix((float *)&g_World1);
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D3D10_TECHNIQUE_DESC techDesc;
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g_pTechniqueRender->GetDesc(&techDesc);
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for (UINT p = 0; p < techDesc.Passes; p++) {
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g_pTechnique->GetPassByIndex(p)->Apply(0);
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g_pTechniqueRender->GetPassByIndex(p)->Apply(0);
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g_pd3dDevice->DrawIndexed(36, 0, 0);
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}
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// render second cube
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g_pWorldVariable->SetMatrix((float *)&g_World2);
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// render the lights
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for (int m = 0; m < 2; m++) {
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D3DXMATRIX mLight;
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D3DXMATRIX mLightScale;
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D3DXVECTOR3 vLightPos = vLightDirs[m] * 4.0f;
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D3DXMatrixTranslation( &mLight, vLightPos.x, vLightPos.y, vLightPos.z );
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D3DXMatrixScaling( &mLightScale, 0.2f, 0.2f, 0.2f );
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mLight = mLightScale * mLight;
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g_pWorldVariable->SetMatrix((float *)&mLight);
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g_pOutputColorVariable->SetFloatVector((float *)&vLightColors[m]);
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g_pTechniqueRenderLight->GetDesc( &techDesc );
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for (UINT p = 0; p < techDesc.Passes; p++) {
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g_pTechnique->GetPassByIndex(p)->Apply(0);
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g_pTechniqueRenderLight->GetPassByIndex(p)->Apply(0);
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g_pd3dDevice->DrawIndexed(36, 0, 0);
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}
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}
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// present
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g_pSwapChain->Present(0, 0);
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}
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50
main.fx
50
main.fx
@ -2,25 +2,47 @@ matrix World;
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matrix View;
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matrix Projection;
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struct VS_OUTPUT
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float4 vLightDir[2];
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float4 vLightColor[2];
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float4 vOutputColor;
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struct VS_INPUT
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{
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float4 Pos: SV_POSITION;
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float4 Color : COLOR0;
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float4 Pos : POSITION;
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float4 Normal : NORMAL;
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};
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VS_OUTPUT VS(float4 Pos : POSITION, float4 Color : COLOR)
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struct PS_INPUT
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{
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VS_OUTPUT output = (VS_OUTPUT)0;
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output.Pos = mul(Pos, World);
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float4 Pos : SV_POSITION;
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float4 Normal : TEXCOORD0;
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};
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PS_INPUT VS(VS_INPUT input)
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{
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PS_INPUT output = (PS_INPUT)0;
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output.Pos = mul(input.Pos, World);
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output.Pos = mul(output.Pos, View);
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output.Pos = mul(output.Pos, Projection);
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output.Color = Color;
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output.Normal = mul(input.Normal, World);
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return output;
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}
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float4 PS(VS_OUTPUT input) : SV_Target
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float4 PS(PS_INPUT input) : SV_Target
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{
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return input.Color;
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float4 finalColor = 0;
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for (int i = 0; i < 2; i++) {
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finalColor += saturate(dot((float3)vLightDir[i], input.Normal) * vLightColor[i]);
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}
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finalColor.a = 1;
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return finalColor;
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}
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float4 PSSolid(PS_INPUT input) : SV_Target
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{
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return vOutputColor;
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}
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technique10 Render
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@ -32,3 +54,13 @@ technique10 Render
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SetPixelShader(CompileShader(ps_4_0, PS()));
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}
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}
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technique10 RenderLight
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{
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pass P0
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{
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SetVertexShader(CompileShader(vs_4_0, VS()));
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SetGeometryShader(NULL);
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SetPixelShader(CompileShader(ps_4_0, PSSolid()));
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}
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}
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