/// <summary>
///
/// </summary>
/// <param name="view"></param>
/// <param name="projection"></param>
internal void RenderLighting(StereoEye stereoEye, Camera camera, HdrFrame hdrFrame, RenderWorld viewLayer, RenderTargetCube envLight)
{
using (new PixEvent("TiledLighting")) {
var view = camera.GetViewMatrix(stereoEye);
var projection = camera.GetProjectionMatrix(stereoEye);
var device = Game.GraphicsDevice;
device.ResetStates();
var width = hdrFrame.HdrBuffer.Width;
var height = hdrFrame.HdrBuffer.Height;
ICSMController csmCtrl = viewLayer.LightSet.DirectLight.CSMController ?? csmController;
int activeCascadeCount = Math.Min(cascadedShadowMap.CascadeCount, csmCtrl.GetActiveCascadeCount());
//
// Setup compute shader parameters and states :
//
try {
var cbData = new LightingParams();
var invView = Matrix.Invert(view);
var invVP = Matrix.Invert(view * projection);
var viewPos = invView.TranslationVector;
cbData.DirectLightDirection = new Vector4(viewLayer.LightSet.DirectLight.Direction, 0);
cbData.DirectLightIntensity = viewLayer.LightSet.DirectLight.Intensity.ToVector4();
cbData.Projection = projection;
cbData.CSMViewProjection0 = csmCtrl.GetShadowViewMatrix(0) * csmCtrl.GetShadowProjectionMatrix(0);
cbData.CSMViewProjection1 = csmCtrl.GetShadowViewMatrix(1) * csmCtrl.GetShadowProjectionMatrix(1);
cbData.CSMViewProjection2 = csmCtrl.GetShadowViewMatrix(2) * csmCtrl.GetShadowProjectionMatrix(2);
cbData.CSMViewProjection3 = csmCtrl.GetShadowViewMatrix(3) * csmCtrl.GetShadowProjectionMatrix(3);
cbData.View = view;
cbData.ViewPosition = new Vector4(viewPos, 1);
cbData.InverseViewProjection = invVP;
cbData.CSMFilterRadius = new Vector4(CSMFilterSize);
cbData.AmbientColor = viewLayer.LightSet.AmbientLevel;
cbData.Viewport = new Vector4(0, 0, width, height);
cbData.ShowCSLoadOmni = ShowOmniLightTileLoad ? 1 : 0;
cbData.ShowCSLoadEnv = ShowEnvLightTileLoad ? 1 : 0;
cbData.ShowCSLoadSpot = ShowSpotLightTileLoad ? 1 : 0;
cbData.CascadeCount = activeCascadeCount;
cbData.CascadeScale = 1.0f / (float)cascadedShadowMap.CascadeCount;
cbData.FogDensity = viewLayer.FogSettings.Density;
ComputeOmniLightsTiles(view, projection, viewLayer.LightSet);
ComputeSpotLightsTiles(view, projection, viewLayer.LightSet);
ComputeEnvLightsTiles(view, projection, viewLayer.LightSet);
ComputeDecalTiles(view, projection, viewLayer.LightSet);
//
// set states :
//
device.SetTargets(null, hdrFrame.HdrBuffer.Surface);
lightingCB.SetData(cbData);
device.ComputeShaderSamplers[0] = SamplerState.PointClamp;
device.ComputeShaderSamplers[1] = SamplerState.LinearClamp;
device.ComputeShaderSamplers[2] = SamplerState.ShadowSampler;
device.ComputeShaderSamplers[3] = SamplerState.LinearPointWrap;
device.ComputeShaderResources[0] = hdrFrame.GBuffer0;
device.ComputeShaderResources[1] = hdrFrame.GBuffer1;
device.ComputeShaderResources[2] = rs.Sky.SkyCube;
device.ComputeShaderResources[4] = hdrFrame.DepthBuffer;
device.ComputeShaderResources[5] = cascadedShadowMap.ColorBuffer;
device.ComputeShaderResources[6] = spotColor;
device.ComputeShaderResources[7] = viewLayer.LightSet.SpotAtlas == null ? rs.WhiteTexture.Srv : viewLayer.LightSet.SpotAtlas.Texture.Srv;
device.ComputeShaderResources[8] = omniLightBuffer;
device.ComputeShaderResources[9] = spotLightBuffer;
device.ComputeShaderResources[10] = envLightBuffer;
device.ComputeShaderResources[11] = rs.SsaoFilter.OcclusionMap;
device.ComputeShaderResources[12] = viewLayer.RadianceCache;
device.ComputeShaderResources[13] = viewLayer.ParticleSystem.SimulatedParticles;
device.ComputeShaderResources[14] = cascadedShadowMap.ParticleShadow;
device.ComputeShaderResources[15] = envLut.Srv;
device.ComputeShaderResources[16] = decalBuffer;
device.ComputeShaderResources[17] = viewLayer.LightSet.DecalAtlas == null ? rs.WhiteTexture.Srv : viewLayer.LightSet.DecalAtlas.Texture.Srv;
device.ComputeShaderConstants[0] = lightingCB;
device.SetCSRWTexture(0, hdrFrame.LightAccumulator.Surface);
device.SetCSRWBuffer(1, viewLayer.ParticleSystem.ParticleLighting);
//
// Dispatch solids :
//
using (new PixEvent("Solid Lighting")) {
device.PipelineState = factory[(int)LightingFlags.SOLIDLIGHTING];
device.Dispatch(MathUtil.IntDivUp(width, BlockSizeX), MathUtil.IntDivUp(height, BlockSizeY), 1);
}
//
// Dispatch particles :
//
using (new PixEvent("Particle Lighting")) {
if (stereoEye != StereoEye.Right && !rs.SkipParticles)
{
int threadGroupCount = MathUtil.IntDivUp(ParticleSystem.MaxSimulatedParticles, ParticleSystem.BlockSize);
device.PipelineState = factory[(int)LightingFlags.PARTICLES];
device.Dispatch(threadGroupCount, 1, 1);
}
}
} catch (UbershaderException e) {
Log.Warning("{0}", e.Message);
}
//
// Add accumulated light :
//
rs.Filter.OverlayAdditive(hdrFrame.HdrBuffer.Surface, hdrFrame.LightAccumulator);
// Uncomment to enable SSS :
#if false
rs.Filter.GaussBlur(hdrFrame.SSSAccumulator, hdrFrame.LightAccumulator, 5, 0);
rs.Filter.OverlayAdditive(hdrFrame.HdrBuffer.Surface, hdrFrame.SSSAccumulator);
#endif
device.ResetStates();
if (rs.ShowLightCounters)
{
var ls = viewLayer.LightSet;
Log.Message("lights: {0,5} omni {1,5} spot {2,5} env", ls.OmniLights.Count, ls.SpotLights.Count, ls.EnvLights.Count);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="?"></param>
internal void RenderShadows(RenderWorld renderWorld, LightSet lightSet)
{
var device = Game.GraphicsDevice;
var camera = renderWorld.Camera;
var instances = renderWorld.Instances;
if (SkipShadows)
{
return;
}
CheckShadowSize();
csmController.ComputeMatricies(
camera.GetViewMatrix(StereoEye.Mono),
lightSet.DirectLight.Direction,
cascadedShadowMap.CascadeSize,
this.SplitSize,
this.SplitOffset,
this.SplitFactor,
this.CSMProjectionDepth);
ICSMController csmCtrl = lightSet.DirectLight.CSMController ?? csmController;
int activeCascadeCount = Math.Min(cascadedShadowMap.CascadeCount, csmCtrl.GetActiveCascadeCount());
using (new PixEvent("Cascaded Shadow Maps")) {
Game.GraphicsDevice.ResetStates();
cascadedShadowMap.Clear();
for (int i = 0; i < activeCascadeCount; i++)
{
var context = new ShadowContext();
context.ShadowView = csmCtrl.GetShadowViewMatrix(i);
context.ShadowProjection = csmCtrl.GetShadowProjectionMatrix(i);
context.ShadowViewport = cascadedShadowMap.GetCascadeViewport(i);
context.FarDistance = 1;
context.SlopeBias = CSMSlopeBias;
context.DepthBias = CSMDepthBias;
context.ColorBuffer = cascadedShadowMap.ColorBuffer.Surface;
context.DepthBuffer = cascadedShadowMap.DepthBuffer.Surface;
Game.RenderSystem.SceneRenderer.RenderShadowMapCascade(context, instances);
}
}
using (new PixEvent("Particle Shadows")) {
for (int i = 0; i < activeCascadeCount; i++)
{
var viewport = cascadedShadowMap.GetCascadeViewport(i);
var colorBuffer = cascadedShadowMap.ParticleShadow.Surface;
var depthBuffer = cascadedShadowMap.DepthBuffer.Surface;
var viewMatrix = csmController.GetShadowViewMatrix(i);
var projMatrix = csmController.GetShadowProjectionMatrix(i);
renderWorld.ParticleSystem.RenderShadow(new GameTime(), viewport, viewMatrix, projMatrix, colorBuffer, depthBuffer);
}
}
using (new PixEvent("Spotlight Shadow Maps")) {
device.Clear(spotDepth.Surface, 1, 0);
device.Clear(spotColor.Surface, Color4.White);
int index = 0;
foreach (var spot in lightSet.SpotLights)
{
var smSize = SpotShadowSize;
var context = new ShadowContext();
var dx = index % 4;
var dy = index / 4;
var far = spot.Projection.GetFarPlaneDistance();
index++;
context.ShadowView = spot.SpotView;
context.ShadowProjection = spot.Projection;
context.ShadowViewport = new Viewport(smSize * dx, smSize * dy, smSize, smSize);
context.FarDistance = far;
context.SlopeBias = spot.SlopeBias;
context.DepthBias = spot.DepthBias;
context.ColorBuffer = spotColor.Surface;
context.DepthBuffer = spotDepth.Surface;
Game.RenderSystem.SceneRenderer.RenderShadowMapCascade(context, instances);
}
}
}
