1. Shadow map

2. Árnyékok kell: minden fényforrásra egy render target (Spotlight) egy közös depth buffer, aminek stimmel a mérete (EngineDeferred)

3. EngineDeferred.h LPDIRECT3DTEXTURE9 shadowMapDepthBufferTexture; LPDIRECT3DSURFACE9 shadowMapDepthBufferSurface; unsigned int shadowMapSize; void renderShadowMaps();

4. EngineDeferred::EngineDeferred shadowMapSize = 512;

5. EngineDeferred:: createDefaultResources device->CreateTexture( shadowMapSize, shadowMapSize, 1, D3DUSAGE_DEPTHSTENCIL, D3DFMT_D24S8, D3DPOOL_DEFAULT, &shadowMapDepthBufferTexture, NULL); shadowMapDepthBufferTexture->GetSurfaceLevel(0, &shadowMapDepthBufferSurface); SpotlightDirectory::iterator i = spotlightDirectory.begin(); while(i != spotlightDirectory.end()) { i->second->createShadowMap(device); i++; }

6. EngineDeferred:: releaseDefaultResources shadowMapDepthBufferTexture->Release(); shadowMapDepthBufferSurface->Release(); SpotlightDirectory::iterator i = spotlightDirectory.begin(); while(i != spotlightDirectory.end()) { i->second->releaseShadowMap(); i++; }

7. Spotlight.h LPDIRECT3DTEXTURE9 shadowMap; LPDIRECT3DSURFACE9 shadowSurface; unsigned int shadowMapSize; D3DXMATRIX lightViewProjMatrix; EntityCamera lightCamera; public: void createShadowMap(LPDIRECT3DDEVICE9 device); void releaseShadowMap(); void updateShadowMap(const RenderContext& context, NodeGroup* sceneRoot); LPDIRECT3DTEXTURE9 getShadowMap(); const D3DXMATRIX& getLightViewProjMatrix(); #include "EntityCamera.h"

8. Spotlight::Spotlight this->shadowMapSize = 512; D3DXMatrixIdentity( &lightViewProjMatrix);

9. Spotlight::createShadowMap void Spotlight::createShadowMap( LPDIRECT3DDEVICE9 device) { device->CreateTexture( shadowMapSize, shadowMapSize, 1, D3DUSAGE_RENDERTARGET, D3DFMT_R32F, D3DPOOL_DEFAULT, &shadowMap, NULL); shadowMap->GetSurfaceLevel( 0, &shadowSurface); }

10. Spotlight::releaseShadowMap void Spotlight::releaseShadowMap() { shadowMap->Release(); shadowSurface->Release(); }

11. Spotlight::updateShadowMap D3DXVECTOR3 worldPosition = getPosition(); D3DXVECTOR3 worldDirection = getDirection(); lightCamera = EntityCamera( NULL, worldPosition, worldPosition + worldDirection, D3DXVECTOR3(0, 0, 1), 1.55f, 1.0f, 0.1f, 1000.0f); RenderContext lightContext( context.device, context.effect, &lightCamera, context.roleName);

12. folyt. context.device->SetRenderTarget(0, shadowSurface); context.device->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB(255, 0, 0, 0), 1.0f, 0); context.effect-> SetFloatArray("spotlight.position", (float*)&worldPosition, 3); // Spotlight többi tagja most nem kell sceneRoot->render(lightContext);

13. Spotlight const D3DXMATRIX& Spotlight::getLightViewProjMatrix(){ lightViewProjMatrix = lightCamera.getViewMatrix() * lightCamera.getProjMatrix(); return lightViewProjMatrix;} LPDIRECT3DTEXTURE9 Spotlight::getShadowMap(){ return shadowMap; }

14. EngineDeferred:: renderShadowMaps void EngineDeferred::renderShadowMaps(){ device->SetDepthStencilSurface( shadowMapDepthBufferSurface); SpotlightDirectory::iterator i = spotlightDirectory.begin(); while(i != spotlightDirectory.end()) { i->second->updateShadowMap( RenderContext(device, effect, NULL, L"shadow"), worldRoot); i++; } device->SetRenderTarget(0, displayColorBuffer); device->SetDepthStencilSurface( displayDepthStencilBuffer); } kell egy shadow Role

15. EngineDeferred:: createAutoShadedMesh shadedMesh->addRole( L"defer", new Role(materialBuffer, nSubmeshes, textureDirectory, device, "defer")); shadedMesh->addRole( L"shadow", new Role(materialBuffer, nSubmeshes, textureDirectory, device, "shadow"));

16. shadow map építő shader float4 psShadow(TrafoOutput input) : COLOR0 { return length(spotlight.position - input.worldPos); } technique shadow { pass P0 { VertexShader = compile vs_3_0 vsTrafo(); PixelShader = compile ps_3_0 psShadow(); } };

17. EngineDeferred::render blur dolgokat szedjük ki //device->SetRenderTarget(0, postProcSurface); //device->SetRenderTarget(1, NULL); //device->SetRenderTarget(0, deferredGeometrySurface); //effect->SetTexture("deferredGeometryMap", postProcTexture); //effect->SetTechnique("blurHorizontal"); //effect->Begin(&np, 0); //effect->BeginPass(0); //meshDirectory[L"quad"]->DrawSubset(0); //effect->EndPass(); //effect->End(); // //device->SetRenderTarget(0, displayColorBuffer); //effect->SetTexture("deferredGeometryMap", deferredGeometryTexture); //effect->SetTechnique("blurVertical"); //effect->Begin(&np, 0); //effect->BeginPass(0); //meshDirectory[L"quad"]->DrawSubset(0); //effect->EndPass(); //effect->End();

18. EngineDeferred::render device->BeginScene(); renderShadowMaps(); … // deferred buffer gyártás, setTexture effect->SetTechnique("deferredShadowed"); SpotlightDirectory::iterator i = spotlightDirectory.begin(); while(i != spotlightDirectory.end()) { Spotlight* spotlight = i->second; effect->SetFloatArray("spotlight.peakRadiance", (float*)&spotlight->getPeakRadiance(), 3);... // Spotlight többi tagja ugyanígy effect->SetTexture("shadowMap", spotlight->getShadowMap()); effect->SetMatrix("lightViewProjMatrix", &spotlight->getLightViewProjMatrix()); mezei deferred helyett

19. folyt. UINT np; effect->Begin(&np, 0); effect->BeginPass(0); meshDirectory[L"quad"] ->DrawSubset(0); effect->EndPass(); effect->End(); i++; }

20. .fx texture shadowMap; sampler2D shadowMapSampler =sampler_state{ texture = ; MinFilter = LINEAR; MagFilter = LINEAR; MipFilter = LINEAR; AddressU = Wrap; AddressV = Wrap; }; Spotlight spotlight; float4x4 lightViewProjMatrix;

21. .fx deferredShadowed technique deferredShadowed { pass P0 { ZEnable = false; ZWriteEnable = false; CullMode = None; AlphaBlendEnable = true; SrcBlend = One; DestBlend = One; BlendOp = Add; VertexShader = compile vs_3_0 vsQuad(); PixelShader = compile ps_3_0 psDeferredShadowed(); }};

22. psDeferredShadowed float4 psDeferredShadowed(QuadOutput input) : COLOR0 { float4 geometry = tex2D( deferredGeometrySampler, input.tex); float4 brdf = tex2D( deferredBrdfSampler, input.tex); float3 viewDir = normalize(input.worldPosMinusEye); float3 worldPos = eyePosition + viewDir * geometry.w; float4 shadowMapPos = mul(float4(worldPos, 1), lightViewProjMatrix); shadowMapPos /= shadowMapPos.w; float3 lightDiff = spotlight.position - worldPos; float lightDist = length(lightDiff); float2 lextex = shadowMapPos.xy * float2(0.5, -0.5) + float2(0.5, 0.5); float shadowDist = tex2D(shadowMapSampler, lextex); float visibility = lightDist < shadowDist + 0.5; return visibility * 0.5; };

23. lighting float4 psDeferredShadowed(QuadOutput input) : COLOR0 { float4 geometry = tex2D( deferredGeometrySampler, input.tex); float4 brdf = tex2D( deferredBrdfSampler, input.tex); float3 viewDir = normalize(input.worldPosMinusEye); float3 worldPos = eyePosition + viewDir * geometry.w; float4 shadowMapPos = mul(float4(worldPos, 1), lightViewProjMatrix); shadowMapPos /= shadowMapPos.w; float3 lightDiff = spotlight.position - worldPos; float lightDist = length(lightDiff); float3 lightDir = lightDiff / lightDist; float3 lighting = spotlight.peakRadiance * max(0, dot(geometry.xyz, lightDir)) * pow(max(0,dot(-lightDir, spotlight.direction)), spotlight.focus) / dot(lightDiff, lightDiff); float2 lextex = shadowMapPos.xy * float2(0.5, -0.5) + float2(0.5, 0.5); float shadowDist = tex2D(shadowMapSampler, lextex); float visibility = lightDist < shadowDist; return brdf * float4(lighting * visibility + float3(0.5, 0.5, 0.5), 1); };