void LateUpdate()
{
//求阴影产生物体的包围盒
Bounds b = new Bounds();
for (int i = 0; i < _shadowCasterList.Count; i++)
{
if (_shadowCasterList[i] != null)
{
b.Encapsulate(_shadowCasterList[i].bounds);
}
}
b.extents += Vector3.one * boundsOffset;
// Bounds bc = new Bounds();
// for (int i = 0; i < _boxCasterList.Count; i++)
// {
// if (_boxCasterList[i] != null)
// {
// bc.Encapsulate(_boxCasterList[i].bounds);
// }
// }
// bc.extents += Vector3.one * boundsOffset;
#if UNITY_EDITOR
_boundsCollider.center = b.center;
_boundsCollider.size = b.size;
#endif
//根据mainCamera来更新lightCamera和projector的位置，和设置参数
ShadowUtils.SetLightCamera(b, _lightCamera);
_projector.aspectRatio = _lightCamera.aspect;
_projector.orthographicSize = _lightCamera.orthographicSize;
_projector.nearClipPlane = _lightCamera.nearClipPlane;
_projector.farClipPlane = _lightCamera.farClipPlane;
}
void LateUpdate()
{
//求阴影产生物体的包围盒
/*Bounds b = new Bounds();
* for (int i = 0; i < _shadowCasterList.Count; i++)
* {
* if(_shadowCasterList[i] != null)
* {
* b.Encapsulate(_shadowCasterList[i].bounds);
* }
* }
* b.extents += Vector3.one * boundsOffset;
#if UNITY_EDITOR
* _boundsCollider.center = b.center;
* _boundsCollider.size = b.size;
#endif
* //根据mainCamera来更新lightCamera和projector的位置，和设置参数
* ShadowUtils.SetLightCamera(b, _lightCamera);*/
if (_mainCamera == null)
{
_mainCamera = Camera.main;
}
if (_mainCamera == null)
{
return;
}
ShadowUtils.SetLightCamera(_mainCamera, _lightCamera);
_projector.aspectRatio = _lightCamera.aspect;
_projector.orthographicSize = _lightCamera.orthographicSize;
_projector.nearClipPlane = _lightCamera.nearClipPlane;
_projector.farClipPlane = _lightCamera.farClipPlane;
}
/// <summary>
/// Creates a new <c>MainLightShadowCasterPass</c> instance.
/// </summary>
/// <param name="evt">The <c>RenderPassEvent</c> to use.</param>
/// <seealso cref="RenderPassEvent"/>
public MainLightShadowCasterPass(RenderPassEvent evt)
{
base.profilingSampler = new ProfilingSampler(nameof(MainLightShadowCasterPass));
renderPassEvent = evt;
m_MainLightShadowMatrices = new Matrix4x4[k_MaxCascades + 1];
m_CascadeSlices = new ShadowSliceData[k_MaxCascades];
m_CascadeSplitDistances = new Vector4[k_MaxCascades];
MainLightShadowConstantBuffer._WorldToShadow = Shader.PropertyToID("_MainLightWorldToShadow");
MainLightShadowConstantBuffer._ShadowParams = Shader.PropertyToID("_MainLightShadowParams");
MainLightShadowConstantBuffer._CascadeShadowSplitSpheres0 = Shader.PropertyToID("_CascadeShadowSplitSpheres0");
MainLightShadowConstantBuffer._CascadeShadowSplitSpheres1 = Shader.PropertyToID("_CascadeShadowSplitSpheres1");
MainLightShadowConstantBuffer._CascadeShadowSplitSpheres2 = Shader.PropertyToID("_CascadeShadowSplitSpheres2");
MainLightShadowConstantBuffer._CascadeShadowSplitSpheres3 = Shader.PropertyToID("_CascadeShadowSplitSpheres3");
MainLightShadowConstantBuffer._CascadeShadowSplitSphereRadii = Shader.PropertyToID("_CascadeShadowSplitSphereRadii");
MainLightShadowConstantBuffer._ShadowOffset0 = Shader.PropertyToID("_MainLightShadowOffset0");
MainLightShadowConstantBuffer._ShadowOffset1 = Shader.PropertyToID("_MainLightShadowOffset1");
MainLightShadowConstantBuffer._ShadowOffset2 = Shader.PropertyToID("_MainLightShadowOffset2");
MainLightShadowConstantBuffer._ShadowOffset3 = Shader.PropertyToID("_MainLightShadowOffset3");
MainLightShadowConstantBuffer._ShadowmapSize = Shader.PropertyToID("_MainLightShadowmapSize");
m_MainLightShadowmapID = Shader.PropertyToID("_MainLightShadowmapTexture");
m_EmptyLightShadowmapTexture = ShadowUtils.AllocShadowRT(1, 1, k_ShadowmapBufferBits, 1, 0, name: "_EmptyLightShadowmapTexture");
}
public void Set(float v0, float v1, float v2, float v3)
{
p0 = ShadowUtils.Asint(v0);
p1 = ShadowUtils.Asint(v1);
p2 = ShadowUtils.Asint(v2);
p3 = ShadowUtils.Asint(v3);
}
public static void drawShadow(Canvas canvas, Path path, Color color, float elevation, bool transparentOccluder,
float dpr)
{
float kAmbientAlpha = 0.039f;
float kSpotAlpha = ShadowUtils.kUseFastShadow ? 0.1f : 0.25f;
float kLightHeight = 600f;
float kLightRadius = 800f;
Rect bounds = path.getBounds();
float shadow_x = (bounds.left + bounds.right) / 2f;
float shadow_y = bounds.top - 600.0f;
_inAmbient = color.withAlpha((int)(kAmbientAlpha * color.alpha));
_inSpot = color.withAlpha((int)(kSpotAlpha * color.alpha));
_ambientColor = null;
_spotColor = null;
ShadowUtils.computeTonalColors(_inAmbient, _inSpot, ref _ambientColor, ref _spotColor);
_zPlane.Set(0, 0, dpr * elevation);
_devLight.Set(shadow_x, shadow_y, dpr * kLightHeight);
ShadowUtils.drawShadow(
canvas,
path,
_zPlane,
_devLight,
dpr * kLightRadius,
_ambientColor,
_spotColor,
0
);
}
public override void Configure(CommandBuffer cmd, RenderTextureDescriptor cameraTextureDescriptor)
{
m_MainLightShadowmapTexture = ShadowUtils.GetTemporaryShadowTexture(m_ShadowmapWidth,
m_ShadowmapHeight, k_ShadowmapBufferBits);
ConfigureTarget(new RenderTargetIdentifier(m_MainLightShadowmapTexture));
ConfigureClear(ClearFlag.All, Color.black);
}
public static void drawShadow(Canvas canvas, Path path, Color color, float elevation, bool transparentOccluder,
float dpr)
{
Rect bounds = path.getBounds();
float shadow_x = (bounds.left + bounds.right) / 2f;
float shadow_y = bounds.top - 600.0f;
uiColor uicolor = uiColor.fromColor(color);
uiColor inAmbient = uicolor.withAlpha((int)(kAmbientAlpha * uicolor.alpha));
uiColor inSpot = uicolor.withAlpha((int)(kSpotAlpha * uicolor.alpha));
uiColor?ambientColor = null;
uiColor?spotColor = null;
ShadowUtils.computeTonalColors(inAmbient, inSpot, ref ambientColor, ref spotColor);
ShadowUtils.drawShadow(
canvas,
path,
new Vector3(0, 0, dpr * elevation),
new Vector3(shadow_x, shadow_y, dpr * kLightHeight),
dpr * kLightRadius,
ambientColor.Value,
spotColor.Value,
0
);
}
public bool Setup(ref RenderingData renderingData)
{
if (!renderingData.shadowData.supportsMainLightShadows)
{
return(false);
}
Clear();
int shadowLightIndex = renderingData.lightData.mainLightIndex;
if (shadowLightIndex == -1)
{
return(false);
}
VisibleLight shadowLight = renderingData.lightData.visibleLights[shadowLightIndex];
Light light = shadowLight.light;
if (light.shadows == LightShadows.None)
{
return(false);
}
if (shadowLight.lightType != LightType.Directional)
{
Debug.LogWarning("Only directional lights are supported as main light.");
}
Bounds bounds;
if (!renderingData.cullResults.GetShadowCasterBounds(shadowLightIndex, out bounds))
{
return(false);
}
m_ShadowCasterCascadesCount = renderingData.shadowData.mainLightShadowCascadesCount;
int shadowResolution = ShadowUtils.GetMaxTileResolutionInAtlas(renderingData.shadowData.mainLightShadowmapWidth,
renderingData.shadowData.mainLightShadowmapHeight, m_ShadowCasterCascadesCount);
m_ShadowmapWidth = renderingData.shadowData.mainLightShadowmapWidth;
m_ShadowmapHeight = (m_ShadowCasterCascadesCount == 2) ?
renderingData.shadowData.mainLightShadowmapHeight >> 1 :
renderingData.shadowData.mainLightShadowmapHeight;
for (int cascadeIndex = 0; cascadeIndex < m_ShadowCasterCascadesCount; ++cascadeIndex)
{
bool success = ShadowUtils.ExtractDirectionalLightMatrix(ref renderingData.cullResults, ref renderingData.shadowData,
shadowLightIndex, cascadeIndex, m_ShadowmapWidth, m_ShadowmapHeight, shadowResolution, light.shadowNearPlane,
out m_CascadeSplitDistances[cascadeIndex], out m_CascadeSlices[cascadeIndex], out m_CascadeSlices[cascadeIndex].viewMatrix, out m_CascadeSlices[cascadeIndex].projectionMatrix);
if (!success)
{
return(false);
}
}
return(true);
}
private void Loaded()
{
//The control was drawn.
//This means we can add the drop shadow
ShadowUtils.CreateDropShadow(this);
if (Parent != null)
{
Parent.Invalidate();
}
}
public override void Configure(CommandBuffer cmd, RenderTextureDescriptor cameraTextureDescriptor)
{
base.Configure(cmd, cameraTextureDescriptor);
if (m_CharacterShadowmapTexture == null)
{
m_CharacterShadowmapTexture = ShadowUtils.GetTemporaryShadowTexture(m_ShadowmapWidth, m_ShadowmapHeight, k_ShadowmapBufferBits);
m_CharacterShadowmapTexture.name = "CharacterShadowmapTexture";
}
ConfigureTarget(new RenderTargetIdentifier(m_CharacterShadowmapTexture));
ConfigureClear(ClearFlag.All, Color.black);
}
// Start is called before the first frame update
void Start()
{
//bits = 0,16,24라는데...24비트로 했을 때만 스텐실 버퍼가 생긴다함
//rawImage.texture = testRenderTexture;
//testRenderTexture = ShadowUtils.GetTemporaryShadowTexture(1920, 1080, 24);
rawImage.texture = testRenderTexture;
testRenderTexture = ShadowUtils.GetTemporaryShadowTexture(1920, 1080, 24);
RenderTexture.ReleaseTemporary(testRenderTexture);
}
public override void Configure(CommandBuffer cmd, RenderTextureDescriptor cameraTextureDescriptor)
{
m_MainLightShadowmapTexture = ShadowUtils.GetTemporaryShadowTexture(m_ShadowmapWidth,
m_ShadowmapHeight, k_ShadowmapBufferBits);
if (test_pcfDefine && (test_pcfDefine.forcePoint || test_pcfDefine.pt == PCFType.UE4Manual2x2PCF || test_pcfDefine.pt == PCFType.UE4Manual3x3PCF_NoGather))
{
m_MainLightShadowmapTexture.filterMode = FilterMode.Point;
}
ConfigureTarget(new RenderTargetIdentifier(m_MainLightShadowmapTexture));
ConfigureClear(ClearFlag.All, Color.black);
}
void RenderAdditionalShadowmapAtlas(ref ScriptableRenderContext context, ref CullingResults cullResults, ref LightData lightData, ref ShadowData shadowData)
{
NativeArray <VisibleLight> visibleLights = lightData.visibleLights;
bool additionalLightHasSoftShadows = false;
CommandBuffer cmd = CommandBufferPool.Get(k_RenderAdditionalLightShadows);
using (new ProfilingSample(cmd, k_RenderAdditionalLightShadows))
{
int shadowmapWidth = shadowData.additionalLightsShadowmapWidth;
int shadowmapHeight = shadowData.additionalLightsShadowmapHeight;
m_AdditionalLightsShadowmapTexture = ShadowUtils.GetTemporaryShadowTexture(shadowmapWidth, shadowmapHeight, k_ShadowmapBufferBits);
SetRenderTarget(cmd, m_AdditionalLightsShadowmapTexture, RenderBufferLoadAction.DontCare, RenderBufferStoreAction.Store,
ClearFlag.Depth, Color.black, TextureDimension.Tex2D);
for (int i = 0; i < m_AdditionalShadowCastingLightIndices.Count; ++i)
{
int shadowLightIndex = m_AdditionalShadowCastingLightIndices[i];
VisibleLight shadowLight = visibleLights[shadowLightIndex];
if (m_AdditionalShadowCastingLightIndices.Count > 1)
{
ShadowUtils.ApplySliceTransform(ref m_AdditionalLightSlices[i], shadowmapWidth, shadowmapHeight);
}
var settings = new ShadowDrawingSettings(cullResults, shadowLightIndex);
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex,
ref shadowData, m_AdditionalLightSlices[i].projectionMatrix, m_AdditionalLightSlices[i].resolution);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
ShadowUtils.RenderShadowSlice(cmd, ref context, ref m_AdditionalLightSlices[i], ref settings, m_AdditionalLightSlices[i].projectionMatrix, m_AdditionalLightSlices[i].viewMatrix);
additionalLightHasSoftShadows |= shadowLight.light.shadows == LightShadows.Soft;
}
SetupAdditionalLightsShadowReceiverConstants(cmd, ref shadowData);
}
// We share soft shadow settings for main light and additional lights to save keywords.
// So we check here if pipeline supports soft shadows and either main light or any additional light has soft shadows
// to enable the keyword.
// TODO: In PC and Consoles we can upload shadow data per light and branch on shader. That will be more likely way faster.
bool mainLightHasSoftShadows = shadowData.supportsMainLightShadows &&
lightData.mainLightIndex != -1 &&
visibleLights[lightData.mainLightIndex].light.shadows == LightShadows.Soft;
bool softShadows = shadowData.supportsSoftShadows && (mainLightHasSoftShadows || additionalLightHasSoftShadows);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.AdditionalLightShadows, true);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, softShadows);
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
public override void Configure(CommandBuffer cmd, RenderTextureDescriptor cameraTextureDescriptor)
{
if (m_AdditionalLightsShadowmapTexture != null)
{
Debug.LogWarning($"Texture {m_AdditionalLightsShadowmapTexture.name} wasn't released");
FrameCleanup(cmd);
}
cmd.name += " (Additional lights)";
m_AdditionalLightsShadowmapTexture = ShadowUtils.GetTemporaryShadowTexture(m_ShadowmapWidth, m_ShadowmapHeight, k_ShadowmapBufferBits);
ConfigureTarget(new RenderTargetIdentifier(m_AdditionalLightsShadowmapTexture));
ConfigureClear(ClearFlag.All, Color.black);
}
void RenderMainLightCascadeShadowmap(ref ScriptableRenderContext context, ref CullingResults cullResults, ref LightData lightData, ref ShadowData shadowData)
{
int shadowLightIndex = lightData.mainLightIndex;
if (shadowLightIndex == -1)
{
return;
}
VisibleLight shadowLight = lightData.visibleLights[shadowLightIndex];
// NOTE: Do NOT mix ProfilingScope with named CommandBuffers i.e. CommandBufferPool.Get("name").
// Currently there's an issue which results in mismatched markers.
CommandBuffer cmd = CommandBufferPool.Get();
using (new ProfilingScope(cmd, ProfilingSampler.Get(URPProfileId.MainLightShadow)))
{
var settings = new ShadowDrawingSettings(cullResults, shadowLightIndex);
for (int cascadeIndex = 0; cascadeIndex < m_ShadowCasterCascadesCount; ++cascadeIndex)
{
//settings.splitData = m_CascadeSlices[cascadeIndex].splitData; // NOTE: currently DrawShadows culls more casters if no ShadowSplitData.cullingPlanes are set (version cds 8652678b), so it is currently better to not pass the m_CascadeSlices[cascadeIndex].splitData object returned by CullingResults.ComputeDirectionalShadowMatricesAndCullingPrimitives (change introduced in 8bf71cf). Culling is only based on the ShadowSplitData.cullingSphere distances.
var splitData = settings.splitData;
splitData.cullingSphere = m_CascadeSplitDistances[cascadeIndex];
settings.splitData = splitData;
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex, ref shadowData, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].resolution);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.CastingPunctualLightShadow, false);
ShadowUtils.RenderShadowSlice(cmd, ref context, ref m_CascadeSlices[cascadeIndex],
ref settings, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].viewMatrix);
}
bool softShadows = shadowLight.light.shadows == LightShadows.Soft && shadowData.supportsSoftShadows;
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadows, shadowData.mainLightShadowCascadesCount == 1);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadowCascades, shadowData.mainLightShadowCascadesCount > 1);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, softShadows);
SetupMainLightShadowReceiverConstants(cmd, shadowLight, shadowData.supportsSoftShadows);
}
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
protected override void AllocateShadows(FrameId frameId, VisibleLight[] lights, uint totalGranted, ref ShadowRequestVector grantedRequests, ref ShadowIndicesVector shadowIndices, ref ShadowDataVector shadowDatas, ref ShadowPayloadVector shadowmapPayload)
{
ShadowData sd = new ShadowData();
shadowDatas.Reserve(totalGranted);
shadowIndices.Reserve(grantedRequests.Count());
for (uint i = 0, cnt = grantedRequests.Count(); i < cnt; ++i)
{
VisibleLight vl = lights[grantedRequests[i].index];
Light l = vl.light;
AdditionalLightData ald = l.GetComponent <AdditionalLightData>();
// set light specific values that are not related to the shadowmap
GPUShadowType shadowtype;
ShadowUtils.MapLightType(ald.archetype, vl.lightType, out sd.lightType, out shadowtype);
sd.bias = l.shadowBias;
sd.quality = 0;
shadowIndices.AddUnchecked((int)shadowDatas.Count());
int smidx = 0;
while (smidx < k_MaxShadowmapPerType)
{
if (m_ShadowmapsPerType[(int)shadowtype, smidx].Reserve(frameId, ref sd, grantedRequests[i], (uint)ald.shadowResolution, (uint)ald.shadowResolution, ref shadowDatas, ref shadowmapPayload, lights))
{
break;
}
smidx++;
}
if (smidx == k_MaxShadowmapPerType)
{
throw new ArgumentException("The requested shadows do not fit into any shadowmap.");
}
}
// final step for shadowmaps that only gather data during the previous loop and do the actual allocation once they have all the data.
foreach (var sm in m_Shadowmaps)
{
if (!sm.ReserveFinalize(frameId, ref shadowDatas, ref shadowmapPayload))
{
throw new ArgumentException("Shadow allocation failed in the ReserveFinalize step.");
}
}
}
void RenderMainLightCascadeShadowmap(ref ScriptableRenderContext context, ref CullingResults cullResults, ref LightData lightData, ref ShadowData shadowData)
{
int shadowLightIndex = lightData.mainLightIndex;
if (shadowLightIndex == -1)
{
return;
}
VisibleLight shadowLight = lightData.visibleLights[shadowLightIndex];
CommandBuffer cmd = CommandBufferPool.Get(m_ProfilerTag);
using (new ProfilingSample(cmd, m_ProfilerTag))
{
var settings = new ShadowDrawingSettings(cullResults, shadowLightIndex);
for (int cascadeIndex = 0; cascadeIndex < m_ShadowCasterCascadesCount; ++cascadeIndex)
{
var splitData = settings.splitData;
splitData.cullingSphere = m_CascadeSplitDistances[cascadeIndex];
settings.splitData = splitData;
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex, ref shadowData, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].resolution);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
ShadowUtils.RenderShadowSlice(cmd, ref context, ref m_CascadeSlices[cascadeIndex],
ref settings, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].viewMatrix);
}
bool softShadows = shadowLight.light.shadows == LightShadows.Soft && shadowData.supportsSoftShadows;
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadows, true);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadowCascades, shadowData.mainLightShadowCascadesCount > 1);
//* pwrd majiao: frag阶段计算shadowCoord //
CoreUtils.SetKeyword(cmd, "_TRADITIONAL_SHADOW", shadowData.useTraditionalShadow);
//* pwrd majiao //
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, softShadows);
SetupMainLightShadowReceiverConstants(cmd, shadowLight, softShadows);
}
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
void RenderMainLightCascadeShadowmap(ref ScriptableRenderContext context, ref CullingResults cullResults, ref LightData lightData, ref ShadowData shadowData)
{
int shadowLightIndex = lightData.mainLightIndex;
if (shadowLightIndex == -1)
{
return;
}
VisibleLight shadowLight = lightData.visibleLights[shadowLightIndex];
// NOTE: Do NOT mix ProfilingScope with named CommandBuffers i.e. CommandBufferPool.Get("name").
// Currently there's an issue which results in mismatched markers.
CommandBuffer cmd = CommandBufferPool.Get();
using (new ProfilingScope(cmd, ProfilingSampler.Get(URPProfileId.MainLightShadow)))
{
var settings = new ShadowDrawingSettings(cullResults, shadowLightIndex);
settings.useRenderingLayerMaskTest = UniversalRenderPipeline.asset.supportsLightLayers;
for (int cascadeIndex = 0; cascadeIndex < m_ShadowCasterCascadesCount; ++cascadeIndex)
{
settings.splitData = m_CascadeSlices[cascadeIndex].splitData;
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex, ref shadowData, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].resolution);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.CastingPunctualLightShadow, false);
ShadowUtils.RenderShadowSlice(cmd, ref context, ref m_CascadeSlices[cascadeIndex],
ref settings, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].viewMatrix);
}
bool softShadows = shadowLight.light.shadows == LightShadows.Soft && shadowData.supportsSoftShadows;
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadows, shadowData.mainLightShadowCascadesCount == 1);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadowCascades, shadowData.mainLightShadowCascadesCount > 1);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, softShadows);
SetupMainLightShadowReceiverConstants(cmd, shadowLight, shadowData.supportsSoftShadows);
}
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
void RenderMainLightCascadeShadowmap(ref ScriptableRenderContext context, ref CullingResults cullResults, ref LightData lightData, ref ShadowData shadowData)
{
int shadowLightIndex = lightData.mainLightIndex;
if (shadowLightIndex == -1)
{
return;
}
VisibleLight shadowLight = lightData.visibleLights[shadowLightIndex];
CommandBuffer cmd = CommandBufferPool.Get(k_RenderMainLightShadowmapTag);
using (new ProfilingSample(cmd, k_RenderMainLightShadowmapTag))
{
var settings = new ShadowDrawingSettings(cullResults, shadowLightIndex);
m_MainLightShadowmapTexture = ShadowUtils.GetTemporaryShadowTexture(m_ShadowmapWidth,
m_ShadowmapHeight, k_ShadowmapBufferBits);
SetRenderTarget(cmd, m_MainLightShadowmapTexture, RenderBufferLoadAction.DontCare,
RenderBufferStoreAction.Store, ClearFlag.Depth, Color.black, TextureDimension.Tex2D);
for (int cascadeIndex = 0; cascadeIndex < m_ShadowCasterCascadesCount; ++cascadeIndex)
{
var splitData = settings.splitData;
splitData.cullingSphere = m_CascadeSplitDistances[cascadeIndex];
settings.splitData = splitData;
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex, ref shadowData, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].resolution);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
ShadowUtils.RenderShadowSlice(cmd, ref context, ref m_CascadeSlices[cascadeIndex],
ref settings, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].viewMatrix);
}
SetupMainLightShadowReceiverConstants(cmd, ref shadowData, shadowLight);
}
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadows, true);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadowCascades, shadowData.mainLightShadowCascadesCount > 1);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, shadowLight.light.shadows == LightShadows.Soft && shadowData.supportsSoftShadows);
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
protected override void PrioritizeShadowCasters(Camera camera, VisibleLight[] lights, uint shadowRequestsCount, int[] shadowRequests)
{
// this function simply looks at the projected area on the screen, ignoring all light types and shapes
m_TmpSortKeys.Reset(shadowRequestsCount);
for (int i = 0; i < shadowRequestsCount; ++i)
{
int vlidx = shadowRequests[i];
VisibleLight vl = lights[vlidx];
Light l = vl.light;
// use the screen rect as a measure of importance
float area = vl.screenRect.width * vl.screenRect.height;
long val = ShadowUtils.Asint(area);
val <<= 32;
val |= (long)(uint)vlidx;
m_TmpSortKeys.AddUnchecked(val);
}
m_TmpSortKeys.Sort();
m_TmpSortKeys.ExtractTo(shadowRequests, 0, out shadowRequestsCount, delegate(long key) { return((int)(key & 0xffffffff)); });
}
void LateUpdate()
{
//calculate bounding box of the shadow caster
Bounds b = new Bounds();
for (int i = 0; i < _shadowCasterList.Count; i++)
{
if (_shadowCasterList[i] != null)
{
b.Encapsulate(_shadowCasterList[i].bounds);
}
}
b.extents += Vector3.one * boundsOffset;
#if UNITY_EDITOR
_boundsCollider.center = b.center;
_boundsCollider.size = b.size;
#endif
//according to the mainCamera,updating position of lightCamera and projector
ShadowUtils.SetLightCamera(b, _lightCamera);
_projector.aspectRatio = _lightCamera.aspect;
_projector.orthographicSize = _lightCamera.orthographicSize;
_projector.nearClipPlane = _lightCamera.nearClipPlane;
_projector.farClipPlane = _lightCamera.farClipPlane;
}
void SetupMainLightShadowReceiverConstants(CommandBuffer cmd, VisibleLight shadowLight, bool supportsSoftShadows)
{
Light light = shadowLight.light;
bool softShadows = shadowLight.light.shadows == LightShadows.Soft && supportsSoftShadows;
int cascadeCount = m_ShadowCasterCascadesCount;
for (int i = 0; i < cascadeCount; ++i)
{
m_MainLightShadowMatrices[i] = m_CascadeSlices[i].shadowTransform;
}
// We setup and additional a no-op WorldToShadow matrix in the last index
// because the ComputeCascadeIndex function in Shadows.hlsl can return an index
// out of bounds. (position not inside any cascade) and we want to avoid branching
Matrix4x4 noOpShadowMatrix = Matrix4x4.zero;
noOpShadowMatrix.m22 = (SystemInfo.usesReversedZBuffer) ? 1.0f : 0.0f;
for (int i = cascadeCount; i <= k_MaxCascades; ++i)
{
m_MainLightShadowMatrices[i] = noOpShadowMatrix;
}
float invShadowAtlasWidth = 1.0f / renderTargetWidth;
float invShadowAtlasHeight = 1.0f / renderTargetHeight;
float invHalfShadowAtlasWidth = 0.5f * invShadowAtlasWidth;
float invHalfShadowAtlasHeight = 0.5f * invShadowAtlasHeight;
float softShadowsProp = softShadows ? 1.0f : 0.0f;
ShadowUtils.GetScaleAndBiasForLinearDistanceFade(m_MaxShadowDistanceSq, m_CascadeBorder, out float shadowFadeScale, out float shadowFadeBias);
cmd.SetGlobalTexture(m_MainLightShadowmap.id, m_MainLightShadowmapTexture);
cmd.SetGlobalMatrixArray(MainLightShadowConstantBuffer._WorldToShadow, m_MainLightShadowMatrices);
cmd.SetGlobalVector(MainLightShadowConstantBuffer._ShadowParams,
new Vector4(light.shadowStrength, softShadowsProp, shadowFadeScale, shadowFadeBias));
if (m_ShadowCasterCascadesCount > 1)
{
cmd.SetGlobalVector(MainLightShadowConstantBuffer._CascadeShadowSplitSpheres0,
m_CascadeSplitDistances[0]);
cmd.SetGlobalVector(MainLightShadowConstantBuffer._CascadeShadowSplitSpheres1,
m_CascadeSplitDistances[1]);
cmd.SetGlobalVector(MainLightShadowConstantBuffer._CascadeShadowSplitSpheres2,
m_CascadeSplitDistances[2]);
cmd.SetGlobalVector(MainLightShadowConstantBuffer._CascadeShadowSplitSpheres3,
m_CascadeSplitDistances[3]);
cmd.SetGlobalVector(MainLightShadowConstantBuffer._CascadeShadowSplitSphereRadii, new Vector4(
m_CascadeSplitDistances[0].w * m_CascadeSplitDistances[0].w,
m_CascadeSplitDistances[1].w * m_CascadeSplitDistances[1].w,
m_CascadeSplitDistances[2].w * m_CascadeSplitDistances[2].w,
m_CascadeSplitDistances[3].w * m_CascadeSplitDistances[3].w));
}
// Inside shader soft shadows are controlled through global keyword.
// If any additional light has soft shadows it will force soft shadows on main light too.
// As it is not trivial finding out which additional light has soft shadows, we will pass main light properties if soft shadows are supported.
// This workaround will be removed once we will support soft shadows per light.
if (supportsSoftShadows)
{
if (m_SupportsBoxFilterForShadows)
{
cmd.SetGlobalVector(MainLightShadowConstantBuffer._ShadowOffset0,
new Vector4(-invHalfShadowAtlasWidth, -invHalfShadowAtlasHeight, 0.0f, 0.0f));
cmd.SetGlobalVector(MainLightShadowConstantBuffer._ShadowOffset1,
new Vector4(invHalfShadowAtlasWidth, -invHalfShadowAtlasHeight, 0.0f, 0.0f));
cmd.SetGlobalVector(MainLightShadowConstantBuffer._ShadowOffset2,
new Vector4(-invHalfShadowAtlasWidth, invHalfShadowAtlasHeight, 0.0f, 0.0f));
cmd.SetGlobalVector(MainLightShadowConstantBuffer._ShadowOffset3,
new Vector4(invHalfShadowAtlasWidth, invHalfShadowAtlasHeight, 0.0f, 0.0f));
}
// Currently only used when !SHADER_API_MOBILE but risky to not set them as it's generic
// enough so custom shaders might use it.
cmd.SetGlobalVector(MainLightShadowConstantBuffer._ShadowmapSize, new Vector4(invShadowAtlasWidth,
invShadowAtlasHeight,
renderTargetWidth, renderTargetHeight));
}
}
public bool Setup(ref RenderingData renderingData)
{
Clear();
m_ShadowmapWidth = renderingData.shadowData.additionalLightsShadowmapWidth;
m_ShadowmapHeight = renderingData.shadowData.additionalLightsShadowmapHeight;
var visibleLights = renderingData.lightData.visibleLights;
int additionalLightsCount = renderingData.lightData.additionalLightsCount;
if (m_AdditionalLightSlices == null || m_AdditionalLightSlices.Length < additionalLightsCount)
{
m_AdditionalLightSlices = new ShadowSliceData[additionalLightsCount];
}
if (m_AdditionalLightsShadowData == null || m_AdditionalLightsShadowData.Length < additionalLightsCount)
{
m_AdditionalLightsShadowData = new ShaderInput.ShadowData[additionalLightsCount];
}
// By default visible lights do not have shadow light indices.
for (int i = 0; i < visibleLights.Length; ++i)
{
m_ShadowCastingLightIndicesMap.Add(-1);
}
int validShadowCastingLights = 0;
bool supportsSoftShadows = renderingData.shadowData.supportsSoftShadows;
for (int i = 0; i < visibleLights.Length && m_AdditionalShadowCastingLightIndices.Count < additionalLightsCount; ++i)
{
VisibleLight shadowLight = visibleLights[i];
// Skip main directional light as it is not packed into the shadow atlas
if (i == renderingData.lightData.mainLightIndex)
{
continue;
}
int shadowCastingLightIndex = m_AdditionalShadowCastingLightIndices.Count;
bool isValidShadowSlice = false;
if (renderingData.cullResults.GetShadowCasterBounds(i, out var bounds))
{
// We need to iterate the lights even though additional lights are disabled because
// cullResults.GetShadowCasterBounds() does the fence sync for the shadow culling jobs.
if (!renderingData.shadowData.supportsAdditionalLightShadows)
{
continue;
}
if (IsValidShadowCastingLight(ref renderingData.lightData, i))
{
bool success = ShadowUtils.ExtractSpotLightMatrix(ref renderingData.cullResults,
ref renderingData.shadowData,
i,
out var shadowTransform,
out m_AdditionalLightSlices[shadowCastingLightIndex].viewMatrix,
out m_AdditionalLightSlices[shadowCastingLightIndex].projectionMatrix);
if (success)
{
m_AdditionalShadowCastingLightIndices.Add(i);
var light = shadowLight.light;
float shadowStrength = light.shadowStrength;
float softShadows = (supportsSoftShadows && light.shadows == LightShadows.Soft) ? 1.0f : 0.0f;
Vector4 shadowParams = new Vector4(shadowStrength, softShadows, 0.0f, 0.0f);
if (m_UseStructuredBuffer)
{
m_AdditionalLightsShadowData[shadowCastingLightIndex].worldToShadowMatrix = shadowTransform;
m_AdditionalLightsShadowData[shadowCastingLightIndex].shadowParams = shadowParams;
}
else
{
m_AdditionalLightsWorldToShadow[shadowCastingLightIndex] = shadowTransform;
m_AdditionalLightsShadowParams[shadowCastingLightIndex] = shadowParams;
}
isValidShadowSlice = true;
validShadowCastingLights++;
}
}
}
if (m_UseStructuredBuffer)
{
// When using StructuredBuffers all the valid shadow casting slices data
// are stored in a the ShadowData buffer and then we setup a index map to
// map from light indices to shadow buffer index. A index map of -1 means
// the light is not a valid shadow casting light and there's no data for it
// in the shadow buffer.
int indexMap = (isValidShadowSlice) ? shadowCastingLightIndex : -1;
m_AdditionalShadowCastingLightIndicesMap.Add(indexMap);
}
else if (!isValidShadowSlice)
{
// When NOT using structured buffers we have no performant way to sample the
// index map as int[]. Unity shader compiler converts int[] to float4[] to force memory alignment.
// This makes indexing int[] arrays very slow. So, in order to avoid indexing shadow lights we
// setup slice data and reserve shadow map space even for invalid shadow slices.
// The data is setup with zero shadow strength. This has the same visual effect of no shadow
// attenuation contribution from this light.
// This makes sampling shadow faster but introduces waste in shadow map atlas.
// The waste increases with the amount of additional lights to shade.
// Therefore Universal RP try to keep the limit at sane levels when using uniform buffers.
Matrix4x4 identity = Matrix4x4.identity;
m_AdditionalShadowCastingLightIndices.Add(i);
m_AdditionalLightsWorldToShadow[shadowCastingLightIndex] = identity;
m_AdditionalLightsShadowParams[shadowCastingLightIndex] = Vector4.zero;
m_AdditionalLightSlices[shadowCastingLightIndex].viewMatrix = identity;
m_AdditionalLightSlices[shadowCastingLightIndex].projectionMatrix = identity;
}
m_ShadowCastingLightIndicesMap[i] = isValidShadowSlice ? shadowCastingLightIndex : -1;
}
// Lights that need to be rendered in the shadow map atlas
if (validShadowCastingLights == 0)
{
return(false);
}
int atlasWidth = renderingData.shadowData.additionalLightsShadowmapWidth;
int atlasHeight = renderingData.shadowData.additionalLightsShadowmapHeight;
int sliceResolution = ShadowUtils.GetMaxTileResolutionInAtlas(atlasWidth, atlasHeight, validShadowCastingLights);
// In the UI we only allow for square shadow map atlas. Here we check if we can fit
// all shadow slices into half resolution of the atlas and adjust height to have tighter packing.
int maximumSlices = (m_ShadowmapWidth / sliceResolution) * (m_ShadowmapHeight / sliceResolution);
if (validShadowCastingLights <= (maximumSlices / 2))
{
m_ShadowmapHeight /= 2;
}
int shadowSlicesPerRow = (atlasWidth / sliceResolution);
float oneOverAtlasWidth = 1.0f / m_ShadowmapWidth;
float oneOverAtlasHeight = 1.0f / m_ShadowmapHeight;
int sliceIndex = 0;
int shadowCastingLightsBufferCount = m_AdditionalShadowCastingLightIndices.Count;
Matrix4x4 sliceTransform = Matrix4x4.identity;
sliceTransform.m00 = sliceResolution * oneOverAtlasWidth;
sliceTransform.m11 = sliceResolution * oneOverAtlasHeight;
for (int i = 0; i < shadowCastingLightsBufferCount; ++i)
{
// we can skip the slice if strength is zero. Some slices with zero
// strength exists when using uniform array path.
if (!m_UseStructuredBuffer && Mathf.Approximately(m_AdditionalLightsShadowParams[i].x, 0.0f))
{
continue;
}
m_AdditionalLightSlices[i].offsetX = (sliceIndex % shadowSlicesPerRow) * sliceResolution;
m_AdditionalLightSlices[i].offsetY = (sliceIndex / shadowSlicesPerRow) * sliceResolution;
m_AdditionalLightSlices[i].resolution = sliceResolution;
sliceTransform.m03 = m_AdditionalLightSlices[i].offsetX * oneOverAtlasWidth;
sliceTransform.m13 = m_AdditionalLightSlices[i].offsetY * oneOverAtlasHeight;
// We bake scale and bias to each shadow map in the atlas in the matrix.
// saves some instructions in shader.
if (m_UseStructuredBuffer)
{
m_AdditionalLightsShadowData[i].worldToShadowMatrix = sliceTransform * m_AdditionalLightsShadowData[i].worldToShadowMatrix;
}
else
{
m_AdditionalLightsWorldToShadow[i] = sliceTransform * m_AdditionalLightsWorldToShadow[i];
}
sliceIndex++;
}
return(true);
}
void RenderAdditionalShadowmapAtlas(ref ScriptableRenderContext context, ref CullingResults cullResults, ref LightData lightData, ref ShadowData shadowData)
{
NativeArray <VisibleLight> visibleLights = lightData.visibleLights;
bool additionalLightHasSoftShadows = false;
// NOTE: Do NOT mix ProfilingScope with named CommandBuffers i.e. CommandBufferPool.Get("name").
// Currently there's an issue which results in mismatched markers.
CommandBuffer cmd = CommandBufferPool.Get();
using (new ProfilingScope(cmd, m_ProfilingSampler))
{
bool anyShadowSliceRenderer = false;
int shadowSlicesCount = m_AdditionalShadowCastingLightIndices.Count;
for (int i = 0; i < shadowSlicesCount; ++i)
{
// we do the shadow strength check here again here because when using
// the uniform array path we might have zero strength shadow lights.
// In that case we need the shadow data buffer but we can skip
// rendering them to shadowmap.
if (!m_UseStructuredBuffer && Mathf.Approximately(m_AdditionalLightsShadowParams[i].x, 0.0f))
{
continue;
}
// Index of the VisibleLight
int shadowLightIndex = m_AdditionalShadowCastingLightIndices[i];
VisibleLight shadowLight = visibleLights[shadowLightIndex];
ShadowSliceData shadowSliceData = m_AdditionalLightSlices[i];
var settings = new ShadowDrawingSettings(cullResults, shadowLightIndex);
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex,
ref shadowData, shadowSliceData.projectionMatrix, shadowSliceData.resolution);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
ShadowUtils.RenderShadowSlice(cmd, ref context, ref shadowSliceData, ref settings);
additionalLightHasSoftShadows |= shadowLight.light.shadows == LightShadows.Soft;
anyShadowSliceRenderer = true;
}
// We share soft shadow settings for main light and additional lights to save keywords.
// So we check here if pipeline supports soft shadows and either main light or any additional light has soft shadows
// to enable the keyword.
// TODO: In PC and Consoles we can upload shadow data per light and branch on shader. That will be more likely way faster.
bool mainLightHasSoftShadows = shadowData.supportsMainLightShadows &&
lightData.mainLightIndex != -1 &&
visibleLights[lightData.mainLightIndex].light.shadows ==
LightShadows.Soft;
bool softShadows = shadowData.supportsSoftShadows &&
(mainLightHasSoftShadows || additionalLightHasSoftShadows);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.AdditionalLightShadows, anyShadowSliceRenderer);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, softShadows);
if (anyShadowSliceRenderer)
{
SetupAdditionalLightsShadowReceiverConstants(cmd, ref shadowData, softShadows);
}
}
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
public bool Setup(RenderTargetHandle destination, ref RenderingData renderingData, int maxVisibleAdditinalLights)
{
Clear();
this.destination = destination;
if (m_AdditionalLightShadowMatrices.Length != maxVisibleAdditinalLights)
{
m_AdditionalLightShadowMatrices = new Matrix4x4[maxVisibleAdditinalLights];
m_AdditionalLightSlices = new ShadowSliceData[maxVisibleAdditinalLights];
m_AdditionalLightsShadowStrength = new float[maxVisibleAdditinalLights];
}
m_AdditionalShadowCastingLightIndices.Clear();
Bounds bounds;
var visibleLights = renderingData.lightData.visibleLights;
int additionalLightsCount = renderingData.lightData.additionalLightsCount;
for (int i = 0; i < visibleLights.Length && m_AdditionalShadowCastingLightIndices.Count < additionalLightsCount; ++i)
{
if (i == renderingData.lightData.mainLightIndex)
{
continue;
}
VisibleLight shadowLight = visibleLights[i];
Light light = shadowLight.light;
if (shadowLight.lightType == LightType.Spot && light != null && light.shadows != LightShadows.None)
{
if (renderingData.cullResults.GetShadowCasterBounds(i, out bounds))
{
m_AdditionalShadowCastingLightIndices.Add(i);
}
}
}
int shadowCastingLightsCount = m_AdditionalShadowCastingLightIndices.Count;
if (shadowCastingLightsCount == 0)
{
return(false);
}
// TODO: Add support to point light shadows. We make a simplification here that only works
// for spot lights and with max spot shadows per pass.
int atlasWidth = renderingData.shadowData.additionalLightsShadowmapWidth;
int atlasHeight = renderingData.shadowData.additionalLightsShadowmapHeight;
int sliceResolution = ShadowUtils.GetMaxTileResolutionInAtlas(atlasWidth, atlasHeight, shadowCastingLightsCount);
bool anyShadows = false;
int shadowSlicesPerRow = (atlasWidth / sliceResolution);
for (int i = 0; i < shadowCastingLightsCount; ++i)
{
int shadowLightIndex = m_AdditionalShadowCastingLightIndices[i];
VisibleLight shadowLight = visibleLights[shadowLightIndex];
// Currently Only Spot Lights are supported in additional lights
Debug.Assert(shadowLight.lightType == LightType.Spot);
Matrix4x4 shadowTransform;
bool success = ShadowUtils.ExtractSpotLightMatrix(ref renderingData.cullResults, ref renderingData.shadowData,
shadowLightIndex, out shadowTransform, out m_AdditionalLightSlices[i].viewMatrix, out m_AdditionalLightSlices[i].projectionMatrix);
if (success)
{
// TODO: We need to pass bias and scale list to shader to be able to support multiple
// shadow casting additional lights.
m_AdditionalLightSlices[i].offsetX = (i % shadowSlicesPerRow) * sliceResolution;
m_AdditionalLightSlices[i].offsetY = (i / shadowSlicesPerRow) * sliceResolution;
m_AdditionalLightSlices[i].resolution = sliceResolution;
m_AdditionalLightSlices[i].shadowTransform = shadowTransform;
m_AdditionalLightsShadowStrength[i] = shadowLight.light.shadowStrength;
anyShadows = true;
}
else
{
m_AdditionalShadowCastingLightIndices.RemoveAt(i--);
}
}
return(anyShadows);
}
void LateUpdate()
{
ShadowUtils.SetLightCamera(_mainCamera, _lightCamera);
}
public bool Setup(ref RenderingData renderingData)
{
using var profScope = new ProfilingScope(null, m_ProfilingSetupSampler);
if (!renderingData.shadowData.supportsMainLightShadows)
{
return(false);
}
Clear();
int shadowLightIndex = renderingData.lightData.mainLightIndex;
if (shadowLightIndex == -1)
{
return(false);
}
VisibleLight shadowLight = renderingData.lightData.visibleLights[shadowLightIndex];
Light light = shadowLight.light;
if (light.shadows == LightShadows.None)
{
return(false);
}
if (shadowLight.lightType != LightType.Directional)
{
Debug.LogWarning("Only directional lights are supported as main light.");
}
Bounds bounds;
if (!renderingData.cullResults.GetShadowCasterBounds(shadowLightIndex, out bounds))
{
return(false);
}
m_ShadowCasterCascadesCount = renderingData.shadowData.mainLightShadowCascadesCount;
int shadowResolution = ShadowUtils.GetMaxTileResolutionInAtlas(renderingData.shadowData.mainLightShadowmapWidth,
renderingData.shadowData.mainLightShadowmapHeight, m_ShadowCasterCascadesCount);
renderTargetWidth = renderingData.shadowData.mainLightShadowmapWidth;
renderTargetHeight = (m_ShadowCasterCascadesCount == 2) ?
renderingData.shadowData.mainLightShadowmapHeight >> 1 :
renderingData.shadowData.mainLightShadowmapHeight;
for (int cascadeIndex = 0; cascadeIndex < m_ShadowCasterCascadesCount; ++cascadeIndex)
{
bool success = ShadowUtils.ExtractDirectionalLightMatrix(ref renderingData.cullResults, ref renderingData.shadowData,
shadowLightIndex, cascadeIndex, renderTargetWidth, renderTargetHeight, shadowResolution, light.shadowNearPlane,
out m_CascadeSplitDistances[cascadeIndex], out m_CascadeSlices[cascadeIndex]);
if (!success)
{
return(false);
}
}
m_MainLightShadowmapTexture = ShadowUtils.GetTemporaryShadowTexture(renderTargetWidth, renderTargetHeight, k_ShadowmapBufferBits);
m_MaxShadowDistanceSq = renderingData.cameraData.maxShadowDistance * renderingData.cameraData.maxShadowDistance;
m_CascadeBorder = renderingData.shadowData.mainLightShadowCascadeBorder;
return(true);
}
override public bool Reserve(FrameId frameId, ref ShadowData shadowData, ShadowRequest sr, uint[] widths, uint[] heights, ref VectorArray <ShadowData> entries, ref VectorArray <ShadowPayload> payload, VisibleLight[] lights)
{
ShadowData sd = shadowData;
ShadowData dummy = new ShadowData();
if (sr.shadowType != GPUShadowType.Point && sr.shadowType != GPUShadowType.Spot && sr.shadowType != GPUShadowType.Directional)
{
return(false);
}
if (sr.shadowType == GPUShadowType.Directional)
{
for (uint i = 0; i < k_MaxCascadesInShader; ++i)
{
m_TmpSplits[i].Set(0.0f, 0.0f, 0.0f, float.NegativeInfinity);
}
}
Key key;
key.id = sr.instanceId;
key.faceIdx = 0;
key.visibleIdx = (int)sr.index;
key.shadowDataIdx = entries.Count();
uint originalEntryCount = entries.Count();
uint originalPayloadCount = payload.Count();
uint originalActiveEntries = m_ActiveEntriesCount;
uint facecnt = sr.facecount;
uint facemask = sr.facemask;
uint bit = 1;
int resIdx = 0;
entries.Reserve(6);
float nearPlaneOffset = QualitySettings.shadowNearPlaneOffset;
while (facecnt > 0)
{
if ((bit & facemask) != 0)
{
uint width = widths[resIdx];
uint height = heights[resIdx];
uint ceIdx;
if (!Alloc(frameId, key, width, height, out ceIdx, payload))
{
entries.Purge(entries.Count() - originalEntryCount);
payload.Purge(payload.Count() - originalPayloadCount);
uint added = m_ActiveEntriesCount - originalActiveEntries;
for (uint i = originalActiveEntries; i < m_ActiveEntriesCount; ++i)
{
m_EntryCache.Swap(i, m_EntryCache.Count() - i - 1);
}
m_EntryCache.Purge(added, Free);
m_ActiveEntriesCount = originalActiveEntries;
return(false);
}
// read
CachedEntry ce = m_EntryCache[ceIdx];
// modify
Matrix4x4 vp;
if (sr.shadowType == GPUShadowType.Point)
{
vp = ShadowUtils.ExtractPointLightMatrix(lights[sr.index], key.faceIdx, 2.0f, out ce.current.view, out ce.current.proj, out ce.current.lightDir, out ce.current.splitData, m_CullResults, (int)sr.index);
}
else if (sr.shadowType == GPUShadowType.Spot)
{
vp = ShadowUtils.ExtractSpotLightMatrix(lights[sr.index], out ce.current.view, out ce.current.proj, out ce.current.lightDir, out ce.current.splitData);
}
else if (sr.shadowType == GPUShadowType.Directional)
{
vp = ShadowUtils.ExtractDirectionalLightMatrix(lights[sr.index], key.faceIdx, m_CascadeCount, m_CascadeRatios, nearPlaneOffset, width, height, out ce.current.view, out ce.current.proj, out ce.current.lightDir, out ce.current.splitData, m_CullResults, (int)sr.index);
m_TmpSplits[key.faceIdx] = ce.current.splitData.cullingSphere;
m_TmpSplits[key.faceIdx].w *= ce.current.splitData.cullingSphere.w;
}
else
{
vp = Matrix4x4.identity; // should never happen, though
}
// write :(
m_EntryCache[ceIdx] = ce;
sd.worldToShadow = vp.transpose; // apparently we need to transpose matrices that are sent to HLSL
sd.scaleOffset = new Vector4(ce.current.viewport.width * m_WidthRcp, ce.current.viewport.height * m_HeightRcp, ce.current.viewport.x, ce.current.viewport.y);
sd.texelSizeRcp = new Vector2(m_WidthRcp, m_HeightRcp);
sd.PackShadowmapId(m_TexSlot, m_SampSlot, ce.current.slice);
sd.shadowType = sr.shadowType;
sd.payloadOffset = payload.Count();
entries.AddUnchecked(sd);
resIdx++;
facecnt--;
key.shadowDataIdx++;
}
else
{
// we push a dummy face in, otherwise we'd need a mapping from face index to shadowData in the shader as well
entries.AddUnchecked(dummy);
}
key.faceIdx++;
bit <<= 1;
}
if (sr.shadowType == GPUShadowType.Directional)
{
ShadowPayload sp = new ShadowPayload();
payload.Reserve(k_MaxCascadesInShader);
for (uint i = 0; i < k_MaxCascadesInShader; i++)
{
sp.Set(m_TmpSplits[i]);
payload.AddUnchecked(sp);
}
}
return(true);
}
