public Vector4 ReserveOtherShadows(Light light, int visibleLightIndex)
{
if (light.shadows != LightShadows.None && light.shadowStrength > 0f)
{
float maskChannel = -1f;
LightBakingOutput lightBaking = light.bakingOutput;
if (lightBaking.lightmapBakeType == LightmapBakeType.Mixed &&
lightBaking.mixedLightingMode == MixedLightingMode.Shadowmask)
{
useShadowMask = true;
maskChannel = lightBaking.occlusionMaskChannel;
}
bool isPoint = light.type == LightType.Point;
int newLightCount = shadowedOtherLightCount + (isPoint ? 6 : 1);
if (newLightCount > maxShadowedOtherLightCount ||
!cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b))
{
return(new Vector4(-light.shadowStrength, 0f, 0f, maskChannel));
}
shadowedOtherLights[shadowedOtherLightCount] = new ShadowedOtherLight
{
visibleLightIndex = visibleLightIndex,
slopeScaleBias = light.shadowBias,
normalBias = light.shadowNormalBias,
isPoint = isPoint
};
Vector4 data = new Vector4(
light.shadowStrength, shadowedOtherLightCount,
isPoint ? 1f : 0f, maskChannel);
shadowedOtherLightCount = newLightCount;
return(data);
}
return(new Vector4(0f, 0f, 0f, -1f));
}
protected override void ReadFromImpl(object obj)
{
base.ReadFromImpl(obj);
Light uo = (Light)obj;
shadows = uo.shadows;
shadowStrength = uo.shadowStrength;
shadowResolution = uo.shadowResolution;
layerShadowCullDistances = uo.layerShadowCullDistances;
cookieSize = uo.cookieSize;
cookie = ToID(uo.cookie);
renderMode = uo.renderMode;
areaSize = uo.areaSize;
lightmapBakeType = uo.lightmapBakeType;
type = uo.type;
spotAngle = uo.spotAngle;
color = uo.color;
colorTemperature = uo.colorTemperature;
intensity = uo.intensity;
bounceIntensity = uo.bounceIntensity;
shadowCustomResolution = uo.shadowCustomResolution;
shadowBias = uo.shadowBias;
shadowNormalBias = uo.shadowNormalBias;
shadowNearPlane = uo.shadowNearPlane;
range = uo.range;
flare = ToID(uo.flare);
bakingOutput = uo.bakingOutput;
cullingMask = uo.cullingMask;
lightShadowCasterMode = uo.lightShadowCasterMode;
shadowRadius = uo.shadowRadius;
shadowAngle = uo.shadowAngle;
}
public Vector4 ReserveDirectionalShadows(Light light, int visibleLightIndex)
{
if (currentDirectionalLightShadowCount < maxDirectionalShadowCount && light.shadows != LightShadows.None && light.shadowStrength > 0f)
{
float maskChannel;
LightBakingOutput lightBakingOutput = light.bakingOutput;
if (lightBakingOutput.lightmapBakeType == LightmapBakeType.Mixed && lightBakingOutput.mixedLightingMode == MixedLightingMode.Shadowmask)
{
useShadowMask = true;
maskChannel = lightBakingOutput.occlusionMaskChannel; // can not use the light index because it may be changed in runtime
}
else
{
maskChannel = -1;
}
// GetShadowCasterBounds now returns true for directional lights even when there is nothing within the shadow range
if (!cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b))
{
// the shadow strength of light is negative, see GetDirectionalShadowAttenuation in WindsmoonShadow.hlsl
// if the stength is positive, the shader may be handle the shadow as realtime shadow
return(new Vector4(-light.shadowStrength, 0f, 0, maskChannel));
}
directionalShadows[currentDirectionalLightShadowCount] = new DirectionalShadow()
{
visibleLightIndex = visibleLightIndex, slopeScaleBias = light.shadowBias, nearPlaneOffset = light.shadowNearPlane
};
return(new Vector4(light.shadowStrength, shadowSettings.DirectionalShadowSetting.CascadeCount * currentDirectionalLightShadowCount++, light.shadowNormalBias, maskChannel));
}
return(new Vector4(0f, 0f, 0f, -1));
}
static void ApplyRendererInfo(RendererInfo[] infos, int[] lightmapOffsetIndex, LightInfo[] lightsInfo)
{
for (int i = 0; i < infos.Length; i++)
{
var info = infos[i];
info.renderer.lightmapIndex = lightmapOffsetIndex[info.lightmapIndex];
info.renderer.lightmapScaleOffset = info.lightmapOffsetScale;
// You have to release shaders.
Material[] mat = info.renderer.sharedMaterials;
for (int j = 0; j < mat.Length; j++)
{
if (mat[j] != null && Shader.Find(mat[j].shader.name) != null)
{
mat[j].shader = Shader.Find(mat[j].shader.name);
}
}
}
for (int i = 0; i < lightsInfo.Length; i++)
{
LightBakingOutput bakingOutput = new LightBakingOutput();
bakingOutput.isBaked = true;
bakingOutput.lightmapBakeType = (LightmapBakeType)lightsInfo[i].lightmapBaketype;
bakingOutput.mixedLightingMode = (MixedLightingMode)lightsInfo[i].mixedLightingMode;
lightsInfo[i].light.bakingOutput = bakingOutput;
}
}
/// <summary>
/// 储备方向光阴影 Vector2存取强度和光线的索引 支持四盏光的ShadowMask
/// </summary>
/// <param name="light"></param>
/// <param name="visibleLightIndex"></param>
public Vector4 ReserveDirectionalShadows(Light light, int visibleLightIndex)
{
//检测阴影强度 None &&cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b)
if (shadowedDirLightCount < maxShadowedDirLightCount &&
light.shadows != LightShadows.None && light.shadowStrength > 0f)
{
float maskChannel = -1;
//shadowMask
LightBakingOutput lightBaking = light.bakingOutput;
if (lightBaking.lightmapBakeType == LightmapBakeType.Mixed && lightBaking.mixedLightingMode == MixedLightingMode.Shadowmask)
{
useShadowMask = true;
maskChannel = lightBaking.occlusionMaskChannel;
}
//直接Return 出去 不需要Cacade数据 阴影跑出CullSphere里面
if (!cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b))
{
//负数防止Shader 采样ShadowMap
return(new Vector4(-light.shadowStrength, 0f, 0f, maskChannel));
}
ShadowDirectionalLights[shadowedDirLightCount] = new ShadowDirectionalLight {
visibleLightIndex = visibleLightIndex, slopeScaleBias = light.shadowBias, nearPlaneOffset = light.shadowNearPlane
};
//* 级联ShadowMap的数量
return(new Vector4(light.shadowStrength, settings.directional.cascadeCount * shadowedDirLightCount++, light.shadowNormalBias, maskChannel));
}
return(new Vector4(0f, 0f, 0f, -1f));
}
public Vector4 ReserveDirectionalShadows(Light light, int visibleLightIndex)
{
if (shadowedDirectionalLightCount < maxShadowedDirectionalLightCount &&
light.shadows != LightShadows.None && light.shadowStrength > 0f //&&
//cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b)
)
{
float maskChannel = -1;
LightBakingOutput lightBaking = light.bakingOutput;
if (lightBaking.lightmapBakeType == LightmapBakeType.Mixed &&
lightBaking.mixedLightingMode == MixedLightingMode.Shadowmask)
{
useShadowMask = true;
maskChannel = lightBaking.occlusionMaskChannel;
}
if (!cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b))
{
return(new Vector4(-light.shadowStrength, 0f, 0f, maskChannel));
}
shadowedDirectionalLights[shadowedDirectionalLightCount] =
new ShadowedDirectionalLight {
visibleLightIndex = visibleLightIndex,
slopeScaleBias = light.shadowBias,
nearPlaneOffset = light.shadowNearPlane
};
return(new Vector4(light.shadowStrength, shadowSettings.directional.cascadeCount * shadowedDirectionalLightCount++, light.shadowNormalBias, maskChannel));
}
return(new Vector4(0f, 0f, 0f, -1f));
}
public void Apply()
{
lightingData.ApplyLightmapsTex();
ApplyLightmapsRenderData();
//下面代码不设置会没有烘焙的影子
LightBakingOutput bakingOutput = new LightBakingOutput();
bakingOutput.isBaked = true;
bakingOutput.lightmapBakeType = LightmapBakeType.Mixed;
bakingOutput.mixedLightingMode = MixedLightingMode.Shadowmask;
dirLight.bakingOutput = bakingOutput;
}
public Vector4 ReserveOtherShadows(Light light, int visibleLightIndex)
{
if (light.shadows != LightShadows.None && light.shadowStrength > 0f)
{
LightBakingOutput lightBaking = light.bakingOutput;
if (lightBaking.lightmapBakeType == LightmapBakeType.Mixed && lightBaking.mixedLightingMode == MixedLightingMode.Shadowmask)
{
useShadowMask = true;
return(new Vector4(light.shadowStrength, 0f, 0f, lightBaking.occlusionMaskChannel));
}
}
return(new Vector4(0f, 0f, 0f, -1f));
}
public static int constructor(IntPtr l)
{
int result;
try
{
LightBakingOutput lightBakingOutput = default(LightBakingOutput);
LuaObject.pushValue(l, true);
LuaObject.pushValue(l, lightBakingOutput);
result = 2;
}
catch (Exception e)
{
result = LuaObject.error(l, e);
}
return(result);
}
void Update()
{
if (isBaked != bakeLight.bakingOutput.isBaked ||
lightmapBakeType != bakeLight.bakingOutput.lightmapBakeType ||
mixedLightingMode != bakeLight.bakingOutput.mixedLightingMode ||
probeOcclusionLightIndex != bakeLight.bakingOutput.probeOcclusionLightIndex ||
occlusionMaskChannel != bakeLight.bakingOutput.occlusionMaskChannel)
{
LightBakingOutput output = new LightBakingOutput();
output.isBaked = isBaked;
output.occlusionMaskChannel = occlusionMaskChannel;
output.mixedLightingMode = mixedLightingMode;
output.occlusionMaskChannel = probeOcclusionLightIndex;
output.lightmapBakeType = lightmapBakeType;
bakeLight.bakingOutput = output;
}
}
public Vector4 ReserveDirectioanlShadows(Light light, int visibleLightIndex)
{
if (ShadowedDirectionalLightCount < maxShadowedDirectionalLightCount &&
light.shadows != LightShadows.None && light.shadowStrength > 0f //&&
//cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b)
)
//the getshadowCasterBound will return false if the light does not effect any oject(can cast shadow) in shadow range
{
float maskChannel = -1;
//we will decide wether to use the shadow mask depend on if the lights are using thi shadow mask
LightBakingOutput lightBaking = light.bakingOutput;
if (lightBaking.lightmapBakeType == LightmapBakeType.Mixed &&
lightBaking.mixedLightingMode == MixedLightingMode.Shadowmask)
{
useShadowMask = true;
maskChannel = lightBaking.occlusionMaskChannel;
}
//Inform Shader the light does not affect anything, used for baked light attenuation
if (!cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b))
{
return(new Vector4(-light.shadowStrength, 0f, maskChannel));
}
ShadowedDirectionalLights[ShadowedDirectionalLightCount] =
new ShadowedDirectionalLight {
visibleLightIndex = visibleLightIndex,
slopScaleBias = light.shadowBias,
nearPlaneOffset = light.shadowNearPlane
};
return(new Vector4(light.shadowStrength,
shadowSettings.directional.cascadeCount * ShadowedDirectionalLightCount++,
light.shadowNormalBias,
maskChannel));
}
else
{
return(new Vector4(0f, 0f, 0f, -1f));
}
}
public Vector4 ReserveOtherShadows(Light light, int visibleLightIndex)
{
if (light.shadows == LightShadows.None || light.shadowStrength <= 0)
{
return(new Vector4(0f, 0f, 0f, -1f));
}
int occlusionMaskChannel = -1;
LightBakingOutput lightBakingOutput = light.bakingOutput;
if (lightBakingOutput.lightmapBakeType == LightmapBakeType.Mixed && lightBakingOutput.mixedLightingMode == MixedLightingMode.Shadowmask)
{
useShadowMask = true;
occlusionMaskChannel = lightBakingOutput.occlusionMaskChannel;
}
bool isPoint = light.type == LightType.Point;
int newLightCount = currentOtherShadowCount + (isPoint ? 6 : 1);
if (newLightCount >= maxOtherShadaowCount || !cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds bounds))
{
// the shadow strength of light is negative, see GetDirectionalShadowAttenuation in WindsmoonShadow.hlsl
// if the stength is positive, the shader may be handle the shadow as realtime shadow
return(new Vector4(-light.shadowStrength, 0f, 0f, occlusionMaskChannel));
}
otherShadows[currentOtherShadowCount] = new OtherShadow()
{
VisibleLightIndex = visibleLightIndex,
SlopeScaleBias = light.shadowBias,
NoramlBias = light.shadowNormalBias,
IsPoint = isPoint
};
Vector4 data = new Vector4(light.shadowStrength, currentOtherShadowCount, isPoint ? 1f : 0f, occlusionMaskChannel);
currentOtherShadowCount = newLightCount;
return(data);
}
public Vector3 ReserveDirectionalShadows(Light light, int visibleLightIndex)
{
// GetShadowCasterBounds return true if the light affects at least one shadow casting object in the Scene
if (currentDirectionalLightShadowCount >= maxDirectionalShadowCount || light.shadows == LightShadows.None || light.shadowStrength <= 0f ||
cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds bouds) == false)
{
return(Vector3.zero);
}
LightBakingOutput lightBakingOutput = light.bakingOutput;
if (lightBakingOutput.lightmapBakeType == LightmapBakeType.Mixed && lightBakingOutput.mixedLightingMode == MixedLightingMode.Shadowmask)
{
useShadowMask = true;
}
directionalShadows[currentDirectionalLightShadowCount] = new DirectionalShadow()
{
visibleLightIndex = visibleLightIndex, slopeScaleBias = light.shadowBias, nearPlaneOffset = light.shadowNearPlane
};
return(new Vector3(light.shadowStrength, shadowSettings.DirectionalShadowSetting.CascadeCount * currentDirectionalLightShadowCount++, light.shadowNormalBias));
}
static void ApplyRendererInfo(RendererInfo[] infos, int lightmapOffsetIndex, LightInfo[] lightsInfo)
{
for (int i = 0; i < infos.Length; i++)
{
var info = infos[i];
if (info.renderer != null)
{
info.renderer.lightmapIndex = info.lightmapIndex + lightmapOffsetIndex;
info.renderer.lightmapScaleOffset = info.lightmapOffsetScale;
}
}
for (int i = 0; i < lightsInfo.Length; i++)
{
LightBakingOutput bakingOutput = new LightBakingOutput
{
isBaked = true,
lightmapBakeType = (LightmapBakeType)lightsInfo[i].lightmapBaketype,
mixedLightingMode = (MixedLightingMode)lightsInfo[i].mixedLightingMode
};
lightsInfo[i].light.bakingOutput = bakingOutput;
}
}
public Vector4 ReserveOtherShadows(Light light, int visibleLightIndex)
{
if (light.shadows != LightShadows.None && light.shadowStrength > 0f)
{
LightBakingOutput lightBaking = light.bakingOutput;
// But because their range is limited it is possible for multiple lights to use the same channel, as long as they don't overlap.
//Thus the shadow mask can support an arbitrary amount of lights, but only up to four per texel. If multiple lights end up overlapping
//while trying to claim the same channel then the least important lights will be forced to Baked mode until there is no longer a conflict.
//如果灯光太多，会出现多个light取同一个channel，会将不重要的light强制变成baked，也就不会进行计算了
if (
lightBaking.lightmapBakeType == LightmapBakeType.Mixed &&
lightBaking.mixedLightingMode == MixedLightingMode.Shadowmask
)
{
useShadowMask = true;
return(new Vector4(
light.shadowStrength, 0f, 0f,
lightBaking.occlusionMaskChannel
));
}
}
return(new Vector4(0f, 0f, 0f, -1f));
}
/// <summary>
/// 配置灯光环境
/// </summary>
void ConfigureLights()
{
mainLightExists = false;
bool shadowmaskExists = false;
bool subtractiveLighting = false;
shadowTileCount = 0;
for (int i = 0; i < cull.visibleLights.Count; i++)
{
if (i == maxVisibleLights) //超过最大灯光数量跳出循环
{
break;
}
VisibleLight light = cull.visibleLights[i];
//visibleLightColors[i] = light.finalColor;
Vector4 attenuation = Vector4.zero;
attenuation.w = 1;
Vector4 shadow = Vector4.zero;
LightBakingOutput baking = light.light.bakingOutput;
//标识
visibleLightOcclusionMasks[i] = occlusionMasks[baking.occlusionMaskChannel + 1];
if (baking.lightmapBakeType == LightmapBakeType.Mixed)
{
shadowmaskExists |= baking.mixedLightingMode == MixedLightingMode.Shadowmask;
//subtractiveLighting |= baking.mixedLightingMode == MixedLightingMode.Subtractive;
if (baking.mixedLightingMode == MixedLightingMode.Subtractive)
{
subtractiveLighting = true;
//设置的颜色设置进去
cameraBuffer.SetGlobalColor(subtractiveShadowColorId, RenderSettings.subtractiveShadowColor);
}
}
if (light.lightType == LightType.Directional)
{
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightDirectionsOrPositions[i] = v;
shadow = ConfigureShadows(i, light.light);
shadow.z = 1f; //标识处理方向光
if (i == 0 && shadow.x > 0f && shadowCascades > 0)
{
mainLightExists = true;
shadowTileCount -= 1;
}
}
else
{
visibleLightDirectionsOrPositions[i] = light.localToWorld.GetColumn(3); //获取点光源位置
attenuation.x = 1f / Mathf.Max(light.range * light.range, 0.00001f);
if (light.lightType == LightType.Spot)
{
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightSpotDirections[i] = v;
float outerRad = Mathf.Deg2Rad * 0.5f * light.spotAngle;
float outerCos = Mathf.Cos(outerRad);
float outerTan = Mathf.Tan(outerRad);
float innerCos = Mathf.Cos(Mathf.Atan(((64f - 18f) / 64f) * outerTan));
float angleRange = Mathf.Max(innerCos - outerCos, 0.001f);
attenuation.z = 1f / angleRange;
attenuation.w = -outerCos * attenuation.z;
//阴影
//Light shadowLight = light.light;
//Bounds shadowBounds;
//if (shadowLight.shadows != LightShadows.None && cull.GetShadowCasterBounds(i, out shadowBounds))
//{
// shadowTileCount += 1;
// shadow.x = shadowLight.shadowStrength; //x分量存阴影强度
// shadow.y = shadowLight.shadows == LightShadows.Soft ? 1f : 0f;
//}
shadow = ConfigureShadows(i, light.light);
}
else
{
visibleLightSpotDirections[i] = Vector4.one;
}
}
visibleLightColors[i] = light.finalColor;
visibleLightAttenuations[i] = attenuation;
shadowData[i] = shadow;
}
bool useDistanceShadowmask = QualitySettings.shadowmaskMode == ShadowmaskMode.DistanceShadowmask;
//是否存在shadowMask
CoreUtils.SetKeyword(cameraBuffer, shadowmaskKeyword, shadowmaskExists && !useDistanceShadowmask);
CoreUtils.SetKeyword(cameraBuffer, subtractiveLightingKeyword, subtractiveLighting);
CoreUtils.SetKeyword(cameraBuffer, distanceShadowmask, shadowmaskExists && useDistanceShadowmask);
//for (; i < maxVisibleLights; i++) //还原清除后面灯光颜色(0,0,0,0)
//{
// visibleLightColors[i] = Color.clear;
//}
//告诉Unity 超出最大灯光数量的索引设置为-1使其不起作用
if (mainLightExists || cull.visibleLights.Count > maxVisibleLights)
{
int[] lightIndices = cull.GetLightIndexMap();
if (mainLightExists)
{
lightIndices[0] = -1;
}
for (int i = maxVisibleLights; i < cull.visibleLights.Count; i++)
{
lightIndices[i] = -1;
}
cull.SetLightIndexMap(lightIndices);
}
}
void ConfigureLights()
{
mainLightExists = false;
shadowTileCount = 0;
bool shadowmaskExists = false;
for (int i = 0; i < cull.visibleLights.Length; i++)
{
if (i == maxVisibleLights)
{
break;
}
VisibleLight light = cull.visibleLights[i];
visibleLightColors[i] = light.finalColor;
Vector4 attenuation = Vector4.zero;
attenuation.w = 1f;
Vector4 shadow = Vector4.zero;
// shadowmask ?
LightBakingOutput baking = light.light.bakingOutput;
visibleLightOcclusionMasks[i] = occlusionMasks[baking.occlusionMaskChannel + 1];
if (baking.lightmapBakeType == LightmapBakeType.Mixed)
{
shadowmaskExists |= baking.mixedLightingMode == MixedLightingMode.Shadowmask;
}
if (light.lightType == LightType.Directional)
{
Vector4 v = light.localToWorldMatrix.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightDirectionsOrPositions[i] = v;
shadow = ConfigureShadows(i, light.light);
shadow.z = 1f;// flag
if (i == 0 && shadow.x > 0f && shadowCascades > 0)
{
mainLightExists = true;
shadowTileCount -= 1;
}
}
else
{
visibleLightDirectionsOrPositions[i] = light.localToWorldMatrix.GetColumn(3);
attenuation.x = 1f / Mathf.Max(light.range * light.range, 0.00001f);
if (light.lightType == LightType.Spot)
{
Vector4 v = light.localToWorldMatrix.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightSpotDirections[i] = v;
float outerRad = Mathf.Deg2Rad * 0.5f * light.spotAngle;
float outerCos = Mathf.Cos(outerRad);
float outerTan = Mathf.Tan(outerRad);
float innerCos = Mathf.Cos(Mathf.Atan((46f / 64f) * outerTan));
float angleRange = Mathf.Max(innerCos - outerCos, 0.001f);
attenuation.z = 1f / angleRange;
attenuation.w = -outerCos * attenuation.z;
shadow = ConfigureShadows(i, light.light);
}
else
{
visibleLightSpotDirections[i] = Vector4.one;
}
}
visibleLightAttenuations[i] = attenuation;
shadowData[i] = shadow;
}
// shadowmask
bool useDistanceShadowmask = QualitySettings.shadowmaskMode == ShadowmaskMode.DistanceShadowmask;
CoreUtils.SetKeyword(cameraBuffer, shadowmaskKeyword, shadowmaskExists && !useDistanceShadowmask);
CoreUtils.SetKeyword(cameraBuffer, distanceShadowmaskKeyword, shadowmaskExists && useDistanceShadowmask);
if (mainLightExists || cull.visibleLights.Length > maxVisibleLights)
{
NativeArray <int> lightIndices = cull.GetLightIndexMap(Allocator.Temp);
if (mainLightExists)
{
lightIndices[0] = -1;
}
for (int i = maxVisibleLights; i < cull.visibleLights.Length; i++)
{
lightIndices[i] = -1;
}
cull.SetLightIndexMap(lightIndices);
}
}
private void ConfigureLights()
{
mainLightExists = false;
bool shadowmaskExists = false;
bool subtractiveLighting = false;
shadowTileCount = 0;
for (int i = 0; i < cullingResults.visibleLights.Length; i++)
{
if (i == maxVisibleLights)
{
break;
}
VisibleLight light = cullingResults.visibleLights[i];
// finalColor字段存储了光源的颜色，该颜色数据是由光源的color属性和intensity属性相乘后的结果，并经过了颜色空间的校正。
visibleLightColors[i] = light.finalColor;
Vector4 attenuation = Vector4.zero;
attenuation.w = 1f; // 为了保证不同类型的光照计算的一致性（用同样的shader代码），将w分量设置为1。
Vector4 shadow = Vector4.zero;
LightBakingOutput baking = light.light.bakingOutput;
// 有四种可能的掩码，我们可以在静态数组（occlusionMasks）中预定义。
// 但也有可能有些灯光不使用阴影遮罩。我们将通过将第一个遮罩组件设置为-1来指示这一点。
// 如果灯光不使用阴影遮罩，则通道为-1，因此在检索预定义的 occlusionMasks 时+1。
visibleLightOcclusionMasks[i] = occlusionMasks[baking.occlusionMaskChannel + 1];
if (baking.lightmapBakeType == LightmapBakeType.Mixed)
{
shadowmaskExists |= baking.mixedLightingMode == MixedLightingMode.Shadowmask; // 判读是否存在烘培阴影。
if (baking.mixedLightingMode == MixedLightingMode.Subtractive)
{
subtractiveLighting = true;
cameraBuffer.SetGlobalColor(subtractiveShadowColorId, UnityEngine.RenderSettings.subtractiveShadowColor.linear);
}
}
if (light.lightType == LightType.Directional)
{
// 方向光的光源方向信息可以通过光源的旋转信息获得，光源的方向是它的z轴方向。
// 我们可以通过VisibleLight.localToWorldMatrix矩阵获取在世界坐标系中的该信息。这个矩阵的第三列定义了光源的本地Z轴方向。
Vector4 v = light.localToWorldMatrix.GetColumn(2);
// 在shader中我们使用从物体朝向光源的向量方向进行计算，所以将获得的光源方向进行取反操作。
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightDirectionsOrPositions[i] = v;
// 设置阴影。
shadow = ConfigureShadows(i, light.light);
shadow.z = 1f; // 用阴影数据的z分量来区分是方向光还是聚光灯。
if (i == 0 && shadow.x > 0f && ShadowCascades > 0)
{
mainLightExists = true;
// 我们会为主光源提供单独的渲染贴图，所以当我们拥有主光源时，让图块计数减1，
// 并且在RenderShadows函数中将其从常规阴影贴图渲染中排除。
shadowTileCount -= 1;
}
}
else if (light.lightType == LightType.Point || light.lightType == LightType.Spot)
{
// 点光源不关心光的方向而关心光源的位置。这个矩阵的第四列定义了光源的世界位置。
visibleLightDirectionsOrPositions[i] = light.localToWorldMatrix.GetColumn(3);
attenuation.x = 1f / Mathf.Max(light.range * light.range, 0.00001f);
if (light.lightType == LightType.Spot)
{
// 聚光灯的光源方向。
Vector4 v = light.localToWorldMatrix.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightSpotDirections[i] = v;
// 聚光灯的衰减。
float outerRad = Mathf.Deg2Rad * 0.5f * light.spotAngle;
float outerCos = Mathf.Cos(outerRad);
float outerTan = Mathf.Tan(outerRad);
float innerCos = Mathf.Cos(Mathf.Atan(((46f / 64f) * outerTan)));
float angleRange = Mathf.Max(innerCos - outerCos, 0.001f);
attenuation.z = 1f / angleRange;
attenuation.w = -outerCos * attenuation.z;
// 设置阴影。
shadow = ConfigureShadows(i, light.light);
}
else
{
visibleLightSpotDirections[i] = Vector4.one;
}
}
// 填充点光源或聚光灯的光照范围。
visibleLightAttenuations[i] = attenuation;
shadowData[i] = shadow;
}
cameraBuffer.SetGlobalVectorArray(visibleLightColorsId, visibleLightColors);
cameraBuffer.SetGlobalVectorArray(visibleLightDirectionsOrPositionsId, visibleLightDirectionsOrPositions);
cameraBuffer.SetGlobalVectorArray(visibleLightAttenuationsId, visibleLightAttenuations); // 点光源。
cameraBuffer.SetGlobalVectorArray(visibleLightSpotDirectionsId, visibleLightSpotDirections); // 聚光灯。
cameraBuffer.SetGlobalVectorArray(visibleLightOcclusionMasksId, visibleLightOcclusionMasks);
// 尽管目前我们已经支持到场景中最多16个光源，但是依然无法避免有可能会存在更多光源的情况。
// 当超出时，我们需要告诉Unity需要将一些光源舍弃以避免数组的越界。
// 如果主光源存在，在渲染前将主光源移出可见光列表，以防止在shader中计算多次（会导致像素光数量上限变成5个）。
if (mainLightExists || cullingResults.visibleLights.Length > maxVisibleLights)
{
var lightIndexs = cullingResults.GetLightIndexMap(Unity.Collections.Allocator.TempJob);
if (mainLightExists)
{
lightIndexs[0] = -1;
}
for (int i = maxVisibleLights; i < cullingResults.visibleLights.Length; i++)
{
lightIndexs[i] = -1;
}
cullingResults.SetLightIndexMap(lightIndexs);
lightIndexs.Dispose();
}
bool useDistanceShadowmask = QualitySettings.shadowmaskMode == ShadowmaskMode.DistanceShadowmask;
CoreUtils.SetKeyword(cameraBuffer, shadowmaskKeyword, shadowmaskExists && !useDistanceShadowmask);
CoreUtils.SetKeyword(cameraBuffer, distanceShadowmaskKeyword, shadowmaskExists && useDistanceShadowmask);
CoreUtils.SetKeyword(cameraBuffer, subtractiveLightingKeyword, subtractiveLighting);
}
void ConfigureLights()
{
mainLightExists = false;
bool shadowmaskExists = false;
bool subtractiveLighting = false;
shadowTileCount = 0;
for (int i = 0; i < cull.visibleLights.Count; i++)
{
if (i == maxVisibleLights)
{
break;
}
VisibleLight light = cull.visibleLights[i];
visibleLightColors[i] = light.finalColor;
Vector4 attenuation = Vector4.zero;
attenuation.w = 1f;
Vector4 shadow = Vector4.zero;
LightBakingOutput baking = light.light.bakingOutput;
visibleLightOcclusionMasks[i] = occlusionMasks[baking.occlusionMaskChannel + 1];
if (baking.lightmapBakeType == LightmapBakeType.Mixed)
{
shadowmaskExists |=
baking.mixedLightingMode == MixedLightingMode.Shadowmask;
//subtractiveLighting |=
// baking.mixedLightingMode == MixedLightingMode.Subtractive;
if (baking.mixedLightingMode == MixedLightingMode.Subtractive)
{
subtractiveLighting = true;
cameraBuffer.SetGlobalColor(
subtractiveShadowColorId,
RenderSettings.subtractiveShadowColor.linear
);
}
}
if (light.lightType == LightType.Directional)
{
//因为要求出光源的朝向，相当于要知道光源transform.forward,矩阵第三列是光源z轴在世界坐标系下表示，也就是forward
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightDirectionsOrPositions[i] = v;
shadow = ConfigureShadows(i, light.light);
shadow.z = 1f;
if (i == 0 && shadow.x > 0f && shadowCascades > 0)
{
mainLightExists = true;
shadowTileCount -= 1;
}
}
else
{
//第四列是光源原点在世界坐标系中的位置
visibleLightDirectionsOrPositions[i] = light.localToWorld.GetColumn(3);
attenuation.x = 1f / Mathf.Max(light.range * light.range, 0.00001f);
if (light.lightType == LightType.Spot)
{
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
//存储spot光源方向
visibleLightSpotDirections[i] = v;
float outerRad = Mathf.Deg2Rad * 0.5f * light.spotAngle;
float outerCos = Mathf.Cos(outerRad);
float outerTan = Mathf.Tan(outerRad);
float innerCos = Mathf.Cos(Mathf.Atan(((46f / 64f) * outerTan)));
float angleRange = Mathf.Max(innerCos - outerCos, 0.001f);
attenuation.z = 1f / angleRange;
attenuation.w = -outerCos * attenuation.z;
shadow = ConfigureShadows(i, light.light);
//Light shadowLight = light.light;
//Bounds shadowBounds;
//if (shadowLight.shadows != LightShadows.None && cull.GetShadowCasterBounds(i, out shadowBounds))
//{
// shadowTileCount += 1;
// shadow.x = shadowLight.shadowStrength;
// shadow.y = shadowLight.shadows == LightShadows.Soft ? 1f : 0f;
//}
}
else
{
visibleLightSpotDirections[i] = Vector4.one;
}
}
visibleLightAttenuations[i] = attenuation;
shadowData[i] = shadow;
}
bool useDistanceShadowmask =
QualitySettings.shadowmaskMode == ShadowmaskMode.DistanceShadowmask;
CoreUtils.SetKeyword(cameraBuffer, shadowmaskKeyword, shadowmaskExists && !useDistanceShadowmask);
CoreUtils.SetKeyword(
cameraBuffer, distanceShadowmaskKeyword,
shadowmaskExists && useDistanceShadowmask
);
CoreUtils.SetKeyword(cameraBuffer, subtractiveLightingKeyword, subtractiveLighting);
//如果超过maxVisibleLights数量的灯光，该脚本不会传输给Shader
//但是Unity自身可能会对超出maxVisibleLights的灯光，进行unity_4LightIndices0赋值，下标会找不到，_VisibleLightColors越界
if (mainLightExists || cull.visibleLights.Count > maxVisibleLights)
{
int[] lightIndices = cull.GetLightIndexMap();
if (mainLightExists)
{
lightIndices[0] = -1;
}
for (int i = maxVisibleLights; i < cull.visibleLights.Count; i++)
{
lightIndices[i] = -1;
}
cull.SetLightIndexMap(lightIndices);
}
}
public static void RefreshScene(Scene scene, ftLightmapsStorage storage = null, bool updateNonBaked = false)
{
var sceneCount = SceneManager.sceneCount;
if (globalMapsAdditional == null)
{
globalMapsAdditional = new List <LightmapAdditionalData>();
}
var lmaps = new List <LightmapData>();
var lmapsAdditional = new List <LightmapAdditionalData>();
var existingLmaps = LightmapSettings.lightmaps;
var existingLmapsAdditional = globalMapsAdditional;
// Acquire storage
if (storage == null)
{
if (!scene.isLoaded)
{
//Debug.LogError("dbg: Scene not loaded");
return;
}
SceneManager.SetActiveScene(scene);
var go = FindInScene("!ftraceLightmaps", scene);
if (go == null)
{
//Debug.LogError("dbg: no storage");
return;
}
storage = go.GetComponent <ftLightmapsStorage>();
if (storage == null)
{
//Debug.LogError("dbg: no storage 2");
return;
}
}
if (storage.idremap == null || storage.idremap.Length != storage.maps.Count)
{
storage.idremap = new int[storage.maps.Count];
}
// Decide which global engine lightmapping mode to use
// TODO: allow mixing different modes
directionalMode = storage.dirMaps.Count != 0;
bool patchedDirection = false;
LightmapSettings.lightmapsMode = directionalMode ? LightmapsMode.CombinedDirectional : LightmapsMode.NonDirectional;
// Set dummy directional tex for non-directional lightmaps in directional mode
if (directionalMode)
{
for (int i = 0; i < existingLmaps.Length; i++)
{
if (directionalMode && existingLmaps[i].lightmapDir == null)
{
var lm = existingLmaps[i];
lm.lightmapDir = GetEmptyDirectionTex(storage);
existingLmaps[i] = lm;
patchedDirection = true;
}
}
}
// Detect if changes to lightmap array are necessary
bool sameArray = false;
if (existingLmaps.Length == storage.maps.Count)
{
sameArray = true;
for (int i = 0; i < storage.maps.Count; i++)
{
if (existingLmaps[i].lightmapColor != storage.maps[i])
{
sameArray = false;
break;
}
if (storage.rnmMaps0.Count > i && (existingLmapsAdditional.Count <= i || existingLmapsAdditional[i].rnm0 != storage.rnmMaps0[i]))
{
sameArray = false;
break;
}
}
}
if (!sameArray) // create new lightmap array
{
if (sceneCount >= 1)
{
// first add old
for (int i = 0; i < existingLmaps.Length; i++)
{
// skip empty lightmaps (can be created by 5.6 ldata asset or vertex color)
// ... unless there are valid lightmaps around them
bool lightmapIsEmpty = existingLmaps[i] == null || (existingLmaps[i].lightmapColor == null && existingLmaps[i].shadowMask == null);
bool lightmapCanBeSkipped = lightmapIsEmpty && (i == 0 || i == existingLmaps.Length - 1);
if (!lightmapCanBeSkipped)
{
lmaps.Add(existingLmaps[i]);
if (existingLmapsAdditional.Count > i)
{
lmapsAdditional.Add(existingLmapsAdditional[i]);
}
}
}
}
for (int i = 0; i < storage.maps.Count; i++)
{
var texlm = storage.maps[i];
Texture2D texmask = null;
Texture2D texdir = null;
Texture2D texrnm0 = null;
Texture2D texrnm1 = null;
Texture2D texrnm2 = null;
int mapMode = 0;
if (storage.masks.Count > i)
{
texmask = storage.masks[i];
}
if (storage.dirMaps.Count > i)
{
texdir = storage.dirMaps[i];
}
if (storage.rnmMaps0.Count > i)
{
texrnm0 = storage.rnmMaps0[i];
texrnm1 = storage.rnmMaps1[i];
texrnm2 = storage.rnmMaps2[i];
mapMode = storage.mapsMode[i];
}
bool found = false;
int firstEmpty = -1;
for (int j = 0; j < lmaps.Count; j++)
{
if (lmaps[j].lightmapColor == texlm && lmaps[j].shadowMask == texmask)
{
// lightmap already added - reuse
storage.idremap[i] = j;
found = true;
//Debug.LogError("reused "+j);
// additional maps array could be flushed due to script recompilation - recover
if (texrnm0 != null && (lmapsAdditional.Count <= j || lmapsAdditional[j].rnm0 == null))
{
while (lmapsAdditional.Count <= j)
{
lmapsAdditional.Add(new LightmapAdditionalData());
}
var l = new LightmapAdditionalData();
l.rnm0 = texrnm0;
l.rnm1 = texrnm1;
l.rnm2 = texrnm2;
l.mode = mapMode;
lmapsAdditional[j] = l;
}
break;
}
else if (firstEmpty < 0 && lmaps[j].lightmapColor == null && lmaps[j].shadowMask == null)
{
// free (deleted) entry in existing lightmap list - possibly reuse
storage.idremap[i] = j;
firstEmpty = j;
}
}
if (!found)
{
LightmapData lm;
if (firstEmpty >= 0)
{
lm = lmaps[firstEmpty];
}
else
{
lm = new LightmapData();
}
lm.lightmapColor = texlm;
if (storage.masks.Count > i)
{
lm.shadowMask = texmask;
}
if (storage.dirMaps.Count > i && texdir != null)
{
lm.lightmapDir = texdir;
}
else if (directionalMode)
{
lm.lightmapDir = GetEmptyDirectionTex(storage);
}
if (firstEmpty < 0)
{
lmaps.Add(lm);
storage.idremap[i] = lmaps.Count - 1;
}
else
{
lmaps[firstEmpty] = lm;
}
if (storage.rnmMaps0.Count > i)
{
var l = new LightmapAdditionalData();
l.rnm0 = texrnm0;
l.rnm1 = texrnm1;
l.rnm2 = texrnm2;
l.mode = mapMode;
if (firstEmpty < 0)
{
//Debug.LogError("added "+(lmaps.Count-1));
while (lmapsAdditional.Count < lmaps.Count - 1)
{
lmapsAdditional.Add(new LightmapAdditionalData());
}
lmapsAdditional.Add(l);
}
else
{
//Debug.LogError("set " + firstEmpty);
while (lmapsAdditional.Count < firstEmpty + 1)
{
lmapsAdditional.Add(new LightmapAdditionalData());
}
lmapsAdditional[firstEmpty] = l;
}
}
}
}
}
else // reuse existing lightmap array, only remap IDs
{
for (int i = 0; i < storage.maps.Count; i++)
{
storage.idremap[i] = i;
//Debug.LogError("full reuse");
/*if (storage.rnmMaps0.Count > i)
* {
* var l = new LightmapAdditionalData();
* l.rnm0 = storage.rnmMaps0[i];
* l.rnm1 = storage.rnmMaps1[i];
* l.rnm2 = storage.rnmMaps2[i];
* l.mode = storage.mapsMode[i];
* lmapsAdditional.Add(l);
* }*/
}
}
#if UNITY_EDITOR
// Set editor lighting mode
Lightmapping.giWorkflowMode = Lightmapping.GIWorkflowMode.OnDemand;
Lightmapping.realtimeGI = storage.usesRealtimeGI;
Lightmapping.bakedGI = true;
#endif
// Replace the lightmap array if needed
if (sameArray && patchedDirection)
{
LightmapSettings.lightmaps = existingLmaps;
}
if (!sameArray)
{
LightmapSettings.lightmaps = lmaps.ToArray();
globalMapsAdditional = lmapsAdditional;
}
/*
* // Debug
* var lms = LightmapSettings.lightmaps;
* for(int i=0; i<lms.Length; i++)
* {
* var name1 = ((lms[i]==null || lms[i].lightmapColor==null) ? "-" : lms[i].lightmapColor.name);
* var name2 = (globalMapsAdditional.Count > i ?(globalMapsAdditional[i].rnm0==null?"x":globalMapsAdditional[i].rnm0.name) : "-");
* Debug.LogError(i+" "+name1+" "+name2);
* }
*/
// Attempt to update skybox probe
if (RenderSettings.ambientMode == UnityEngine.Rendering.AmbientMode.Skybox)// && Lightmapping.lightingDataAsset == null)
{
var probe = RenderSettings.ambientProbe;
int isEmpty = -1;
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 9; j++)
{
// default bugged probes are [almost] black or 1302?
float a = Mathf.Abs(probe[i, j]);
if (a > 1000.0f || a < 0.000001f)
{
isEmpty = 1;
break;
}
if (probe[i, j] != 0)
{
isEmpty = 0;
break;
}
}
if (isEmpty >= 0)
{
break;
}
}
if (isEmpty != 0)
{
DynamicGI.UpdateEnvironment();
}
}
// Set lightmap data on mesh renderers
var emptyVec4 = new Vector4(1, 1, 0, 0);
for (int i = 0; i < storage.bakedRenderers.Count; i++)
{
var r = storage.bakedRenderers[i];
if (r == null)
{
continue;
}
//if (r.isPartOfStaticBatch) continue;
var id = storage.bakedIDs[i];
Mesh vmesh = null;
if (i < storage.bakedVertexColorMesh.Count)
{
vmesh = storage.bakedVertexColorMesh[i];
}
if (vmesh != null)
{
r.additionalVertexStreams = vmesh;
r.lightmapIndex = 0xFFFF;
var prop = new MaterialPropertyBlock();
prop.SetFloat("bakeryLightmapMode", 1);
r.SetPropertyBlock(prop);
continue;
}
int globalID = (id < 0 || id >= storage.idremap.Length) ? id : storage.idremap[id];
r.lightmapIndex = globalID;
if (!r.isPartOfStaticBatch)
{
// scaleOffset is baked on static batches already
var scaleOffset = id < 0 ? emptyVec4 : storage.bakedScaleOffset[i];
r.lightmapScaleOffset = scaleOffset;
}
if (r.lightmapIndex >= 0 && globalID < globalMapsAdditional.Count)
{
var lmap = globalMapsAdditional[globalID];
if (lmap.rnm0 != null)
{
var prop = new MaterialPropertyBlock();
prop.SetTexture("_RNM0", lmap.rnm0);
prop.SetTexture("_RNM1", lmap.rnm1);
prop.SetTexture("_RNM2", lmap.rnm2);
prop.SetFloat("bakeryLightmapMode", lmap.mode);
r.SetPropertyBlock(prop);
}
}
}
// Set lightmap data on definitely-not-baked mesh renderers (can be possibly avoided)
if (updateNonBaked)
{
for (int i = 0; i < storage.nonBakedRenderers.Count; i++)
{
var r = storage.nonBakedRenderers[i];
if (r == null)
{
continue;
}
if (r.isPartOfStaticBatch)
{
continue;
}
r.lightmapIndex = 0xFFFE;
}
}
// Set lightmap data on terrains
for (int i = 0; i < storage.bakedRenderersTerrain.Count; i++)
{
var r = storage.bakedRenderersTerrain[i];
if (r == null)
{
continue;
}
var id = storage.bakedIDsTerrain[i];
r.lightmapIndex = (id < 0 || id >= storage.idremap.Length) ? id : storage.idremap[id];
var scaleOffset = id < 0 ? emptyVec4 : storage.bakedScaleOffsetTerrain[i];
r.lightmapScaleOffset = scaleOffset;
}
// Set shadowmask parameters on lights
for (int i = 0; i < storage.bakedLights.Count; i++)
{
#if UNITY_2017_3_OR_NEWER
var output = new LightBakingOutput();
output.isBaked = true;
output.lightmapBakeType = LightmapBakeType.Mixed;
output.mixedLightingMode = MixedLightingMode.Shadowmask;
output.occlusionMaskChannel = storage.bakedLightChannels[i];
output.probeOcclusionLightIndex = storage.bakedLights[i].bakingOutput.probeOcclusionLightIndex;
storage.bakedLights[i].bakingOutput = output;
//#else
//var light = storage.bakedLights[i];
#endif
}
// Increment lightmap refcounts
if (lightmapRefCount == null)
{
lightmapRefCount = new List <int>();
}
for (int i = 0; i < storage.idremap.Length; i++)
{
int currentID = storage.idremap[i];
while (lightmapRefCount.Count <= currentID)
{
lightmapRefCount.Add(0);
}
if (lightmapRefCount[currentID] < 0)
{
lightmapRefCount[currentID] = 0;
}
lightmapRefCount[currentID]++;
}
//if (loadedStorages == null) loadedStorages = new List<ftLightmapsStorage>();
//if (loadedStorages.Contains(storage)) loadedStorages.Add(storage);
//return appendOffset;
}
void ConfigureLights()
{
mainLightExist = false;
bool shadowmaskExists = false;
bool subtractiveLighting = false;
shadowTileCount = 0;
for (int i = 0; i < cull.visibleLights.Count; i++)
{
if (i == maxVisibleLights)
{
break;
}
VisibleLight light = cull.visibleLights[i];
visibleLightColors[i] = light.finalColor;
Vector4 attenuation = Vector4.zero;
attenuation.w = 1f;
Vector4 shadow = Vector4.zero;
LightBakingOutput baking = light.light.bakingOutput;
visibleLightOcclusionMasks[i] = occlusionMasks[baking.occlusionMaskChannel + 1];
if (baking.lightmapBakeType == LightmapBakeType.Mixed)
{
shadowmaskExists |= baking.mixedLightingMode == MixedLightingMode.Shadowmask;
if (baking.mixedLightingMode == MixedLightingMode.Subtractive)
{
subtractiveLighting = true;
cameraBuffer.SetGlobalColor(subtractiveShadowColorID, RenderSettings.subtractiveShadowColor.linear);
}
}
if (light.lightType == LightType.Directional)
{
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightDirectionsOrPositions[i] = v;
shadow = ConfigureShadows(i, light.light);
shadow.z = 1f;
if (i == 0 && shadow.x > 0f && shadowCascades > 0)
{
mainLightExist = true;
shadowTileCount -= 1;
}
}
else
{
visibleLightDirectionsOrPositions[i] = light.localToWorld.GetColumn(3);
attenuation.x = 1f / Mathf.Max(light.range * light.range, 0.00001f);
if (light.lightType == LightType.Spot)
{
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightSpotDirections[i] = v;
float outerAngle = Mathf.Deg2Rad * light.spotAngle;
float outerCos = Mathf.Cos(outerAngle * 0.5f);
float innerAngle = 2.0f * Mathf.Atan(Mathf.Tan(outerAngle * 0.5f) * (64.0f - 18.0f) / 64.0f);
float innerCos = Mathf.Cos(innerAngle * 0.5f);
float angleRange = Mathf.Max(0.001f, innerCos - outerCos);
attenuation.z = 1.0f / angleRange;
attenuation.w = -outerCos * attenuation.z;
Light shadowLight = light.light;
shadow = ConfigureShadows(i, shadowLight);
}
else
{
visibleLightSpotDirections[i] = Vector4.one;
}
}
visibleLightAttenuations[i] = attenuation;
shadowData[i] = shadow;
}
bool useDistanceShadowmask = QualitySettings.shadowmaskMode == ShadowmaskMode.DistanceShadowmask;
CoreUtils.SetKeyword(cameraBuffer, shadowmaskKeyword, shadowmaskExists && !useDistanceShadowmask);
CoreUtils.SetKeyword(cameraBuffer, distanceShadowmaskKeyword, shadowmaskExists && useDistanceShadowmask);
CoreUtils.SetKeyword(cameraBuffer, subtractiveLightingKeyword, subtractiveLighting);
if (mainLightExist || cull.visibleLights.Count > maxVisibleLights)
{
int[] lightIndices = cull.GetLightIndexMap();
if (mainLightExist)
{
lightIndices[0] = -1;
}
for (int i = maxVisibleLights; i < cull.visibleLights.Count; i++)
{
lightIndices[i] = -1;
}
cull.SetLightIndexMap(lightIndices);
}
}
private void ConfigureLights()
{
mainLightExists = false;
bool shadowmaskExists = false;
bool subtractiveLighting = false;
shadowTileCount = 0;
for (int i = 0; i < cull.visibleLights.Count && i < maxVisibleLights; i++)
{
VisibleLight light = cull.visibleLights[i];
visibleLightColors[i] = light.finalColor;
Vector4 attenuation = Vector4.zero;
attenuation.w = 1f;
Vector4 shadow = Vector4.zero;
LightBakingOutput baking = light.light.bakingOutput;
visibleLightOcclusionMasks[i] = occlusionMasks[baking.occlusionMaskChannel + 1];
if (baking.lightmapBakeType == LightmapBakeType.Mixed)
{
shadowmaskExists |= baking.mixedLightingMode == MixedLightingMode.Shadowmask;
if (baking.mixedLightingMode == MixedLightingMode.Subtractive)
{
subtractiveLighting = true;
cameraBuffer.SetGlobalColor(subtractiveShadowColorID, RenderSettings.subtractiveShadowColor.linear);
}
}
if (light.lightType == LightType.Directional)
{
//光线按照局部Z轴照射 第三列是Z轴旋转
Vector4 v = light.localToWorld.GetColumn(2);
//在shader中 我们需要的光的方向是 从表面到光的 所以要求反
//第四个分量总是零 只用对 x y z 求反
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightDirectionsOrPositions[i] = v;
shadow = ConfigureShadows(i, light.light);
//z=1 是方向光
shadow.z = 1f;
if (i == 0 && shadow.x > 0f && shadowCascades > 0)
{
mainLightExists = true;
shadowTileCount -= 1;
}
}
else
{
//第三个储存的是位置 w是1
visibleLightDirectionsOrPositions[i]
= light.localToWorld.GetColumn(3);
attenuation.x = 1f / Mathf.Max(light.range * light.range, 0.000001f);
if (light.lightType == LightType.Spot)
{
//聚光灯需要 方向 拿Z轴 即矩阵第三行
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightSpotDirections[i] = v;
float outerRad = Mathf.Deg2Rad * 0.5f * light.spotAngle;
//灯光角的一半 外面不显示
float outerCos = Mathf.Cos(outerRad);
//内圈 不衰减
float outerTan = Mathf.Tan(outerRad);
//外圈衰减
float innerCos =
Mathf.Cos(Mathf.Atan(((64f - 18f) / 64f) * outerTan));
float angleRange = Mathf.Max(innerCos - outerCos, 0.0001f);
attenuation.z = 1f / angleRange;
attenuation.w = -outerCos * attenuation.z;
shadow = ConfigureShadows(i, light.light);
}
else
{
visibleLightSpotDirections[i] = Vector4.one;
}
}
visibleLightAttenuations[i] = attenuation;
shadowData[i] = shadow;
}
bool useDistanceShadowmask = QualitySettings.shadowmaskMode == ShadowmaskMode.DistanceShadowmask;
CoreUtils.SetKeyword(cameraBuffer, shadowmaskKeyword, shadowmaskExists && !useDistanceShadowmask);
CoreUtils.SetKeyword(cameraBuffer, distanceShadowmaskKeyword, shadowmaskExists && useDistanceShadowmask);
CoreUtils.SetKeyword(cameraBuffer, subtractiveLightingKeyword, subtractiveLighting);
//剔除额外的光 和 主光源
if (mainLightExists || cull.visibleLights.Count > maxVisibleLights)
{
int[] lightIndices = cull.GetLightIndexMap();
if (mainLightExists)
{
lightIndices[0] = -1;
}
for (int i = maxVisibleLights; i < cull.visibleLights.Count; i++)
{
lightIndices[i] = -1;
}
cull.SetLightIndexMap(lightIndices);
}
}
/// <summary>
/// 初始化光照相关信息
/// </summary>
void ConfigureLights()
{
mainLightExists = false;
bool shadowmaskExists = false;
bool subtractiveLighting = false;
shadowTileCount = 0;
for (int i = 0; i < cull.visibleLights.Count; i++)
{
if (i == maxVisiableLights) //最多光源数量，超过的忽略不再处理
{
break;
}
var light = cull.visibleLights[i];
visiableLightColors[i] = light.finalColor;
Vector4 attenuation = Vector4.zero;
attenuation.w = 1f; //不影响其他光源类型
Vector4 shadow = Vector4.zero;
LightBakingOutput baking = light.light.bakingOutput;
visibleLightOcclusionMasks[i] = occlusionMasks[baking.occlusionMaskChannel + 1];
if (baking.lightmapBakeType == LightmapBakeType.Mixed)
{
shadowmaskExists |= baking.mixedLightingMode == MixedLightingMode.Shadowmask;
//subtractiveLighting |= baking.mixedLightingMode == MixedLightingMode.Subtractive;
if (baking.mixedLightingMode == MixedLightingMode.Subtractive)
{
subtractiveLighting = true;
cameraBuffer.SetGlobalColor(subtractiveShadowColorId,
RenderSettings.subtractiveShadowColor.linear);
}
}
if (light.lightType == LightType.Directional)
{
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visiableLightDirectionsOrPositions[i] = v;
shadow = ConfigureShadows(i, light.light);
shadow.z = 1f;
if (i == 0 && shadow.x > 0f && shadowCascades > 0)
{
mainLightExists = true;
shadowTileCount -= 1;
}
}
else
{
//光源的位置
visiableLightDirectionsOrPositions[i] = light.localToWorld.GetColumn(3);
attenuation.x = 1f / Mathf.Max(light.range * light.range, 0.00001f);
if (light.lightType == LightType.Spot)
{
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visiableLightSpotDirections[i] = v;
float outerRad = Mathf.Deg2Rad * 0.5f * light.spotAngle;
float outerCos = Mathf.Cos(outerRad);
float outerTan = Mathf.Tan(outerRad);
float innerCos = Mathf.Cos(Mathf.Atan((46f / 64f) * outerTan));
float angleRange = Mathf.Max(innerCos - outerCos, 0.0001f);
attenuation.z = 1f / angleRange;
attenuation.w = -outerCos * attenuation.z;
shadow = ConfigureShadows(i, light.light);
}
else
{
//Point Light
visiableLightSpotDirections[i] = Vector4.one;
}
}
visiableLightAttenuations[i] = attenuation;
shadowData[i] = shadow;
}
bool useDistanceShadowmaks = QualitySettings.shadowmaskMode == ShadowmaskMode.DistanceShadowmask;
CoreUtils.SetKeyword(cameraBuffer, shadowmaskKeyword, shadowmaskExists && !useDistanceShadowmaks);
CoreUtils.SetKeyword(cameraBuffer, distanceShadowMaskKeyword, shadowmaskExists && useDistanceShadowmaks);
CoreUtils.SetKeyword(cameraBuffer, subtractiveLightingKeyword, subtractiveLighting);
//超过最大光源个数限制时，设置为-1的灯(不存在的灯)
if (mainLightExists || cull.visibleLights.Count > maxVisiableLights)
{
int[] lightIndices = cull.GetLightIndexMap();
if (mainLightExists)
{
lightIndices[0] = -1;
}
for (int i = maxVisiableLights; i < cull.visibleLights.Count; i++)
{
lightIndices[i] = -1;
}
cull.SetLightIndexMap(lightIndices);
}
}
void ConfigureLights()
{
mainLightExists = false;
bool shadowmaskExists = false;
bool subtractiveLighting = false;
shadowTileCount = 0;
for (int i = 0; i < cull.visibleLights.Count; i++)
{
if (i == maxVisibleLights)
{
break;
}
VisibleLight light = cull.visibleLights[i];
visibleLightColors[i] = light.finalColor;
Vector4 attenuation = Vector4.zero;
attenuation.w = 1f; //if no spot light, factor =1
Vector4 shadow = Vector4.zero;
//shadowmask settings
LightBakingOutput baking = light.light.bakingOutput;
visibleLightOcclusionMasks[i] =
occlusionMasks[baking.occlusionMaskChannel + 1];
if (baking.lightmapBakeType == LightmapBakeType.Mixed)
{
shadowmaskExists |=
baking.mixedLightingMode == MixedLightingMode.Shadowmask;
if (baking.mixedLightingMode == MixedLightingMode.Subtractive)
{
subtractiveLighting = true;
cameraBuffer.SetGlobalColor(
subtractiveShadowColorId,
RenderSettings.subtractiveShadowColor.linear
);
}
}
//light settings
if (light.lightType == LightType.Directional)
{
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z; //change to vector surfaceToLight
visibleLightDirectionsOrPositions[i] = v;
shadow = ConfigureShadows(i, light.light);
shadow.z = 1f;
//directional light index =0, cast shadow, use cascades
if (i == 0 && shadow.x > 0f && shadowCascades > 0)
{
mainLightExists = true;
shadowTileCount -= 1; //cascaded shadow map is not included in tiled shadow map
}
}
else
{
visibleLightDirectionsOrPositions[i] = light.localToWorld.GetColumn(3);
attenuation.x = 1f /
Mathf.Max(light.range * light.range, 0.00001f);
if (light.lightType == LightType.Spot)
{
Vector4 v = light.localToWorld.GetColumn(2);
v.x = -v.x;
v.y = -v.y;
v.z = -v.z;
visibleLightSpotDirections[i] = v;
float outerRad = Mathf.Deg2Rad * 0.5f * light.spotAngle;
float outerCos = Mathf.Cos(outerRad);
float outerTan = Mathf.Tan(outerRad);
float innerCos =
Mathf.Cos(Mathf.Atan(((46f / 64f) * outerTan)));
float angleRange = Mathf.Max(innerCos - outerCos, 0.001f);
attenuation.z = 1f / angleRange;
attenuation.w = -outerCos * attenuation.z;
//buffer shadowData
shadow = ConfigureShadows(i, light.light);
}
else
{
//indicator of pointlight
visibleLightSpotDirections[i] = Vector4.one;
}
}
visibleLightAttenuations[i] = attenuation;
shadowData[i] = shadow;
}
//number of lights exceeds upper limit
if (mainLightExists || cull.visibleLights.Count > maxVisibleLights)
{
int[] lightIndices = cull.GetLightIndexMap();
if (mainLightExists)
{
//remove main light from diffuseLight render, avoid a second render
lightIndices[0] = -1;
}
for (int i = maxVisibleLights; i < cull.visibleLights.Count; i++)
{
lightIndices[i] = -1;
}
cull.SetLightIndexMap(lightIndices);
}
bool useDistanceShadowmask =
QualitySettings.shadowmaskMode == ShadowmaskMode.DistanceShadowmask;
//enable shadowmask keyword
CoreUtils.SetKeyword(cameraBuffer, shadowmaskKeyword,
shadowmaskExists && !useDistanceShadowmask); //if use shadowmask mode
CoreUtils.SetKeyword(cameraBuffer, distanceShadowmaskKeyword,
shadowmaskExists && useDistanceShadowmask); //if use distance shadowmask
CoreUtils.SetKeyword(cameraBuffer, subtractiveLightingKeyword,
subtractiveLighting);
}
/// <summary>
/// Read the data into the specified value.
/// </summary>
/// <param name="value">Value.</param>
/// <param name="reader">Reader.</param>
public override void ReadInto(object value, ISaveGameReader reader)
{
UnityEngine.Light light = (UnityEngine.Light)value;
foreach (string property in reader.Properties)
{
switch (property)
{
case "type":
light.type = reader.ReadProperty <UnityEngine.LightType> ();
break;
case "color":
light.color = reader.ReadProperty <UnityEngine.Color> ();
break;
case "colorTemperature":
light.colorTemperature = reader.ReadProperty <System.Single> ();
break;
case "intensity":
light.intensity = reader.ReadProperty <System.Single> ();
break;
case "bounceIntensity":
light.bounceIntensity = reader.ReadProperty <System.Single> ();
break;
case "shadows":
light.shadows = reader.ReadProperty <UnityEngine.LightShadows> ();
break;
case "shadowStrength":
light.shadowStrength = reader.ReadProperty <System.Single> ();
break;
case "shadowResolution":
light.shadowResolution = reader.ReadProperty <UnityEngine.Rendering.LightShadowResolution> ();
break;
case "shadowCustomResolution":
light.shadowCustomResolution = reader.ReadProperty <System.Int32> ();
break;
case "shadowBias":
light.shadowBias = reader.ReadProperty <System.Single> ();
break;
case "shadowNormalBias":
light.shadowNormalBias = reader.ReadProperty <System.Single> ();
break;
case "shadowNearPlane":
light.shadowNearPlane = reader.ReadProperty <System.Single> ();
break;
case "range":
light.range = reader.ReadProperty <System.Single> ();
break;
case "spotAngle":
light.spotAngle = reader.ReadProperty <System.Single> ();
break;
case "cookieSize":
light.cookieSize = reader.ReadProperty <System.Single> ();
break;
case "cookie":
if (light.cookie == null)
{
light.cookie = reader.ReadProperty <UnityEngine.Texture> ();
}
else
{
reader.ReadIntoProperty <UnityEngine.Texture> (light.cookie);
}
break;
case "flare":
if (light.flare == null)
{
light.flare = reader.ReadProperty <UnityEngine.Flare> ();
}
else
{
reader.ReadIntoProperty <UnityEngine.Flare> (light.flare);
}
break;
case "renderMode":
light.renderMode = reader.ReadProperty <UnityEngine.LightRenderMode> ();
break;
case "alreadyLightmapped":
#if UNITY_2017_3_OR_NEWER
LightBakingOutput bakingOutput = light.bakingOutput;
bakingOutput.isBaked = reader.ReadProperty <System.Boolean> ();
light.bakingOutput = bakingOutput;
#else
light.alreadyLightmapped = reader.ReadProperty <System.Boolean> ();
#endif
break;
case "cullingMask":
light.cullingMask = reader.ReadProperty <System.Int32> ();
break;
case "enabled":
light.enabled = reader.ReadProperty <System.Boolean> ();
break;
case "tag":
light.tag = reader.ReadProperty <System.String> ();
break;
case "name":
light.name = reader.ReadProperty <System.String> ();
break;
case "hideFlags":
light.hideFlags = reader.ReadProperty <UnityEngine.HideFlags> ();
break;
}
}
}