protected override void CreateShadowMap(EntityLightShadow light)
{
var shadowMapDesc = light.Light.Shadow as LightShadowMap;
// create the shadow map
var shadowMap = new ShadowMap
{
LightDirection = light.Light.Direction,
LightPosition = light.Entity.Transformation.Translation,
ShadowMapSize = shadowMapDesc.MaxSize,
ShadowNearDistance = shadowMapDesc.NearDistance,
ShadowFarDistance = shadowMapDesc.FarDistance,
CascadeCount = light.Light.Type is LightDirectional ? shadowMapDesc.CascadeCount : 1, // cascades are only supported for directional shadow maps
//Fov = light.Light.SpotFieldAngle,
Filter = shadowMapDesc.FilterType,
Layers = light.Light.Layers
};
// find or create the shadow map texture
ShadowMapTexture chosenTexture = null;
chosenTexture = AllocateOrChooseTexture(shadowMap, shadowMapDesc.FilterType == LightShadowMapFilterType.Variance ? texturesVsm : texturesDefault);
shadowMap.Texture = chosenTexture;
InternalShadowMaps.Add(shadowMap);
light.ShadowMap = shadowMap;
}
private ShadowMapTexture AllocateOrChooseTexture(ShadowMap newShadowMap, Dictionary <ShadowMapTexture, List <ShadowMap> > shadowMapTextures)
{
ShadowMapTexture chosenTexture = null;
// find best texture
foreach (var shadowMapTexture in shadowMapTextures)
{
var shadowTexture = shadowMapTexture.Key;
var shadowMaps = shadowMapTexture.Value;
shadowTexture.GuillotinePacker.Clear(shadowTexture.ShadowMapDepthTexture.ViewWidth, shadowTexture.ShadowMapDepthTexture.ViewHeight);
var useShadowTexture = true;
for (var i = 0; i < shadowMaps.Count && useShadowTexture; ++i)
{
useShadowTexture = shadowTexture.GuillotinePacker.TryInsert(shadowMaps[i].ShadowMapSize, shadowMaps[i].ShadowMapSize, shadowMaps[i].CascadeCount);
}
useShadowTexture = useShadowTexture && shadowTexture.GuillotinePacker.TryInsert(newShadowMap.ShadowMapSize, newShadowMap.ShadowMapSize, newShadowMap.CascadeCount);
shadowTexture.GuillotinePacker.Clear();
if (useShadowTexture)
{
chosenTexture = shadowMapTexture.Key;
break;
}
}
if (chosenTexture == null)
{
// allocate a new texture
chosenTexture = new ShadowMapTexture(GraphicsDevice, newShadowMap.Filter, 2048);
chosenTexture.GuillotinePacker.Clear(chosenTexture.ShadowMapDepthTexture.ViewWidth, chosenTexture.ShadowMapDepthTexture.ViewHeight);
// TODO: choose texture size based on the shadow map. For now throw exception
if (!chosenTexture.GuillotinePacker.TryInsert(newShadowMap.ShadowMapSize, newShadowMap.ShadowMapSize, newShadowMap.CascadeCount))
{
var message = new StringBuilder();
message.AppendFormat("Unable to allocate shadow map texture. The default size (2048 x 2048) is too small for the shadow map ({0} cascade(s) with size {1}).", newShadowMap.CascadeCount, newShadowMap.ShadowMapSize);
throw new Exception(message.ToString());
}
chosenTexture.GuillotinePacker.Clear();
InternalShadowMapTextures.Add(chosenTexture);
var shadowMaps = new List <ShadowMap> {
newShadowMap
};
shadowMapTextures.Add(chosenTexture, shadowMaps);
}
else
{
shadowMapTextures[chosenTexture].Add(newShadowMap);
}
return(chosenTexture);
}
public override void GenerateShadowMaps(Device device, DeviceContext deviceContext, CRenderScene renderScene)
{
UserDefinedAnnotation annotation = deviceContext.QueryInterface <UserDefinedAnnotation>();
annotation.BeginEvent("SpotLightShadowMap");
deviceContext.Rasterizer.SetViewport(0.0f, 0.0f, CStaticRendererCvars.ShadowMapSize, CStaticRendererCvars.ShadowMapSize);
deviceContext.ClearDepthStencilView(ShadowMapTexture.GetRenderTarget(), DepthStencilClearFlags.Depth, 1.0f, 0);
deviceContext.OutputMerger.SetRenderTargets(ShadowMapTexture.GetRenderTarget());
DepthStencilStateDescription depthStateDesc = new DepthStencilStateDescription()
{
IsDepthEnabled = true,
DepthWriteMask = DepthWriteMask.All,
DepthComparison = Comparison.Less,
IsStencilEnabled = false,
StencilReadMask = 0xFF,
StencilWriteMask = 0xFF,
};
DepthStencilState depthState = new DepthStencilState(device, depthStateDesc);
deviceContext.OutputMerger.SetDepthStencilState(depthState);
SSceneViewInfo viewInfo = new SSceneViewInfo()
{
FitProjectionToScene = false,
Fov = MathUtil.Pi / 2.0f,
ScreenFar = Range,
ScreenNear = 0.1f,
ScreenHeight = CStaticRendererCvars.ShadowMapSize,
ScreenWidth = CStaticRendererCvars.ShadowMapSize,
ScreenLeft = 0.0f,
ScreenTop = 0.0f,
ViewLocation = Transform.WorldPosition,
ViewMatrix = Matrix.Invert(Transform.WorldMatrix)
};
m_projectionMatrix = Matrix.PerspectiveFovLH(viewInfo.Fov, 1.0f, viewInfo.ScreenNear, viewInfo.ScreenFar);
viewInfo.ProjectionMatrix = m_projectionMatrix;
viewInfo.CreateBoundingFrustum();
depthState.Dispose();
renderScene.RenderSceneDepth(device, deviceContext, in viewInfo);
DepthStencilView nullDepthView = null;
deviceContext.OutputMerger.SetRenderTargets(nullDepthView);
annotation.EndEvent();
annotation.Dispose();
}
/// <summary>
/// Adds the shadow map texture to the budget of textures.
/// </summary>
/// <param name="shadowMapTexture">The shadow map texture.</param>
/// <param name="filterType">The filtering that will be applied to this shadow.</param>
protected void AddShadowMapTexture(ShadowMapTexture shadowMapTexture, LightShadowMapFilterType filterType)
{
if (filterType == LightShadowMapFilterType.Variance)
{
texturesVsm.Add(shadowMapTexture, shadowMapTexture.ShadowMapDepthTexture.ViewWidth * shadowMapTexture.ShadowMapDepthTexture.ViewHeight);
shadowMapVsmTextures.Add(shadowMapTexture);
}
else
{
texturesDefault.Add(shadowMapTexture, shadowMapTexture.ShadowMapDepthTexture.ViewWidth * shadowMapTexture.ShadowMapDepthTexture.ViewHeight);
shadowMapDefaultTextures.Add(shadowMapTexture);
}
InternalShadowMapTextures.Add(shadowMapTexture);
}
public void Dispose()
{
ShaderLibrary.Dispose();
foreach (var pass in Passes)
{
pass.Dispose();
}
Quad.Dispose();
CameraUniformBuffer.Dispose();
SceneUniformBuffer.Dispose();
MaterialUniformBuffer.Dispose();
ToneMapUniformBuffer.Dispose();
ShadowMapFramebuffer.Dispose();
ShadowMapTexture.Dispose();
ShadowMapFilteredFramebuffer.Dispose();
ShadowMapFilteredTexture.Dispose();
SSSDepthTexture.Dispose();
SSSHighFramebuffer.Dispose();
SSSHighTexture.Dispose();
SSSMiddleFramebuffer.Dispose();
SSSMiddleTexture.Dispose();
SSSLowFramebuffer.Dispose();
SSSLowTexture.Dispose();
SSSLowFilteredFramebuffer.Dispose();
SSSLowFilteredTexture.Dispose();
SceneFramebuffer.Dispose();
SceneColorTexture.Dispose();
SceneDepthTexture.Dispose();
ToneMapFramebuffer.Dispose();
ToneMapColorTexture.Dispose();
}
private int ShadowMapTextureComparerVsm(ShadowMapTexture texture0, ShadowMapTexture texture1)
{
return texturesVsm[texture0] - texturesVsm[texture1];
}
private int ShadowMapTextureComparerDefault(ShadowMapTexture texture0, ShadowMapTexture texture1)
{
return texturesDefault[texture0] - texturesDefault[texture1];
}
/// <summary>
/// Adds the shadow map texture to the budget of textures.
/// </summary>
/// <param name="shadowMapTexture">The shadow map texture.</param>
/// <param name="filterType">The filtering that will be applied to this shadow.</param>
protected void AddShadowMapTexture(ShadowMapTexture shadowMapTexture, LightShadowMapFilterType filterType)
{
if (filterType == LightShadowMapFilterType.Variance)
{
texturesVsm.Add(shadowMapTexture, shadowMapTexture.ShadowMapDepthTexture.ViewWidth * shadowMapTexture.ShadowMapDepthTexture.ViewHeight);
shadowMapVsmTextures.Add(shadowMapTexture);
}
else
{
texturesDefault.Add(shadowMapTexture, shadowMapTexture.ShadowMapDepthTexture.ViewWidth * shadowMapTexture.ShadowMapDepthTexture.ViewHeight);
shadowMapDefaultTextures.Add(shadowMapTexture);
}
InternalShadowMapTextures.Add(shadowMapTexture);
}
private int ShadowMapTextureComparerVsm(ShadowMapTexture texture0, ShadowMapTexture texture1)
{
return(texturesVsm[texture0] - texturesVsm[texture1]);
}
private int ShadowMapTextureComparerDefault(ShadowMapTexture texture0, ShadowMapTexture texture1)
{
return(texturesDefault[texture0] - texturesDefault[texture1]);
}
public override ShaderResourceView GetShadowMapView()
{
return(ShadowMapTexture.GetTexture());
}
public override void Dispose()
{
ShadowMapTexture.Dispose();
m_isShadowMapIntialized = false;
}
private ShadowMapTexture AllocateOrChooseTexture(ShadowMap newShadowMap, Dictionary<ShadowMapTexture, List<ShadowMap>> shadowMapTextures)
{
ShadowMapTexture chosenTexture = null;
// find best texture
foreach (var shadowMapTexture in shadowMapTextures)
{
var shadowTexture = shadowMapTexture.Key;
var shadowMaps = shadowMapTexture.Value;
shadowTexture.GuillotinePacker.Clear(shadowTexture.ShadowMapDepthTexture.ViewWidth, shadowTexture.ShadowMapDepthTexture.ViewHeight);
var useShadowTexture = true;
for (var i = 0; i < shadowMaps.Count && useShadowTexture; ++i)
useShadowTexture = shadowTexture.GuillotinePacker.TryInsert(shadowMaps[i].ShadowMapSize, shadowMaps[i].ShadowMapSize, shadowMaps[i].CascadeCount);
useShadowTexture = useShadowTexture && shadowTexture.GuillotinePacker.TryInsert(newShadowMap.ShadowMapSize, newShadowMap.ShadowMapSize, newShadowMap.CascadeCount);
shadowTexture.GuillotinePacker.Clear();
if (useShadowTexture)
{
chosenTexture = shadowMapTexture.Key;
break;
}
}
if (chosenTexture == null)
{
// allocate a new texture
chosenTexture = new ShadowMapTexture(GraphicsDevice, newShadowMap.Filter, 2048);
chosenTexture.GuillotinePacker.Clear(chosenTexture.ShadowMapDepthTexture.ViewWidth, chosenTexture.ShadowMapDepthTexture.ViewHeight);
// TODO: choose texture size based on the shadow map. For now throw exception
if (!chosenTexture.GuillotinePacker.TryInsert(newShadowMap.ShadowMapSize, newShadowMap.ShadowMapSize, newShadowMap.CascadeCount))
{
var message = new StringBuilder();
message.AppendFormat("Unable to allocate shadow map texture. The default size (2048 x 2048) is too small for the shadow map ({0} cascade(s) with size {1}).", newShadowMap.CascadeCount, newShadowMap.ShadowMapSize);
throw new Exception(message.ToString());
}
chosenTexture.GuillotinePacker.Clear();
InternalShadowMapTextures.Add(chosenTexture);
var shadowMaps = new List<ShadowMap> { newShadowMap };
shadowMapTextures.Add(chosenTexture, shadowMaps);
}
else
{
shadowMapTextures[chosenTexture].Add(newShadowMap);
}
return chosenTexture;
}
