public Shadowmap(Device device)
{
TextureSize = 1024; //todo: make this a setting...
CascadeCount = Math.Min(Settings.Default.ShadowCascades, 8); // 6; //use setting
PCFSize = 3;
PCFOffset = 0.000125f; //0.002f
BlurBetweenCascades = 0.05f;
ShadowVars = new GpuVarsBuffer <ShadowmapVars>(device);
DepthTexture = DXUtility.CreateTexture2D(device, TextureSize * CascadeCount, TextureSize, 1, 1, Format.R32_Typeless, 1, 0, ResourceUsage.Default, BindFlags.DepthStencil | BindFlags.ShaderResource, 0, 0);
DepthTextureSS = DXUtility.CreateSamplerState(device, TextureAddressMode.Border, new Color4(0.0f), Comparison.Less, Filter.ComparisonMinMagLinearMipPoint, 0, 0.0f, 0.0f, 0.0f);
DepthTextureSRV = DXUtility.CreateShaderResourceView(device, DepthTexture, Format.R32_Float, ShaderResourceViewDimension.Texture2D, 1, 0, 0, 0);
DepthTextureDSV = DXUtility.CreateDepthStencilView(device, DepthTexture, Format.D32_Float, DepthStencilViewDimension.Texture2D);
Cascades = new List <ShadowmapCascade>(CascadeCount);
for (int i = 0; i < CascadeCount; i++)
{
ShadowmapCascade c = new ShadowmapCascade();
c.Owner = this;
c.Index = i;
c.ZNear = 0.0f;
c.ZFar = 1.0f;
c.IntervalNear = 0.0f;
c.IntervalFar = 1.0f;
c.DepthRenderVP = new ViewportF()
{
Height = (float)TextureSize,
Width = (float)TextureSize,
MaxDepth = 1.0f,
MinDepth = 0.0f,
X = (float)(TextureSize * i),
Y = 0,
};
Cascades.Add(c);
}
DepthRenderRS = DXUtility.CreateRasterizerState(device, FillMode.Solid, CullMode.None, true, false, true, 0, 0.0f, 1.0f);
DepthRenderDS = DXUtility.CreateDepthStencilState(device, true, DepthWriteMask.All);
DepthRenderVP = new ViewportF();
DepthRenderVP.Height = (float)TextureSize;
DepthRenderVP.Width = (float)TextureSize;
DepthRenderVP.MaxDepth = 1.0f;
DepthRenderVP.MinDepth = 0.0f;
DepthRenderVP.X = 0;
DepthRenderVP.Y = 0;
graphicsMemoryUsage = (long)(TextureSize * TextureSize * CascadeCount * 4);
}